Editor.java revision e264ac392a886788ebfd1069e1d366e2b1edef72
12bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber/* 22bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber * Copyright (C) 2012 The Android Open Source Project 32bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber * 42bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber * Licensed under the Apache License, Version 2.0 (the "License"); 52bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber * you may not use this file except in compliance with the License. 62bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber * You may obtain a copy of the License at 72bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber * 82bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber * http://www.apache.org/licenses/LICENSE-2.0 92bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber * 102bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber * Unless required by applicable law or agreed to in writing, software 112bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber * distributed under the License is distributed on an "AS IS" BASIS, 122bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 132bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber * See the License for the specific language governing permissions and 142bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber * limitations under the License. 152bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber */ 162bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber 172bfdd428c56c7524d1a11979f200a1762866032dAndreas Huberpackage android.widget; 182bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber 192bfdd428c56c7524d1a11979f200a1762866032dAndreas Huberimport android.R; 202bfdd428c56c7524d1a11979f200a1762866032dAndreas Huberimport android.annotation.Nullable; 212bfdd428c56c7524d1a11979f200a1762866032dAndreas Huberimport android.app.PendingIntent; 222bfdd428c56c7524d1a11979f200a1762866032dAndreas Huberimport android.app.PendingIntent.CanceledException; 232bfdd428c56c7524d1a11979f200a1762866032dAndreas Huberimport android.content.ClipData; 242bfdd428c56c7524d1a11979f200a1762866032dAndreas Huberimport android.content.ClipData.Item; 2581dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhéimport android.content.Context; 262bfdd428c56c7524d1a11979f200a1762866032dAndreas Huberimport android.content.Intent; 271b86fe063badb5f28c467ade39be0f4008688947Andreas Huberimport android.content.UndoManager; 2849694688c82214f5fd9e969e177c9e126a240a26Andreas Huberimport android.content.UndoOperation; 292bfdd428c56c7524d1a11979f200a1762866032dAndreas Huberimport android.content.UndoOwner; 302bfdd428c56c7524d1a11979f200a1762866032dAndreas Huberimport android.content.pm.PackageManager; 312bfdd428c56c7524d1a11979f200a1762866032dAndreas Huberimport android.content.pm.ResolveInfo; 322bfdd428c56c7524d1a11979f200a1762866032dAndreas Huberimport android.content.res.TypedArray; 33cfc3083927df14bf82403b20a45ae303a01c39f5Roger Jönssonimport android.graphics.Canvas; 34cfc3083927df14bf82403b20a45ae303a01c39f5Roger Jönssonimport android.graphics.Color; 35641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shihimport android.graphics.Matrix; 36641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shihimport android.graphics.Paint; 37641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shihimport android.graphics.Path; 38641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shihimport android.graphics.Rect; 39641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shihimport android.graphics.RectF; 40641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shihimport android.graphics.drawable.Drawable; 412bfdd428c56c7524d1a11979f200a1762866032dAndreas Huberimport android.inputmethodservice.ExtractEditText; 425ab368af38fefacc4009e3ab1c1bbd00e62b3bcfAndreas Huberimport android.os.Bundle; 431b86fe063badb5f28c467ade39be0f4008688947Andreas Huberimport android.os.Handler; 442bfdd428c56c7524d1a11979f200a1762866032dAndreas Huberimport android.os.Parcel; 452bfdd428c56c7524d1a11979f200a1762866032dAndreas Huberimport android.os.Parcelable; 462bfdd428c56c7524d1a11979f200a1762866032dAndreas Huberimport android.os.ParcelableParcel; 4781dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhéimport android.os.SystemClock; 4881dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhéimport android.provider.Settings; 495ab368af38fefacc4009e3ab1c1bbd00e62b3bcfAndreas Huberimport android.text.DynamicLayout; 501b86fe063badb5f28c467ade39be0f4008688947Andreas Huberimport android.text.Editable; 515ab368af38fefacc4009e3ab1c1bbd00e62b3bcfAndreas Huberimport android.text.InputFilter; 522bfdd428c56c7524d1a11979f200a1762866032dAndreas Huberimport android.text.InputType; 532bfdd428c56c7524d1a11979f200a1762866032dAndreas Huberimport android.text.Layout; 542bfdd428c56c7524d1a11979f200a1762866032dAndreas Huberimport android.text.ParcelableSpan; 5581dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhéimport android.text.Selection; 562bfdd428c56c7524d1a11979f200a1762866032dAndreas Huberimport android.text.SpanWatcher; 572bfdd428c56c7524d1a11979f200a1762866032dAndreas Huberimport android.text.Spannable; 58ee736e9e74c5368db8d63214513c85cb74bb0183Andreas Huberimport android.text.SpannableStringBuilder; 59180d1b96ee2312f1056a58e26884a89d25ab62c8Chong Zhangimport android.text.Spanned; 60641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shihimport android.text.StaticLayout; 61f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shihimport android.text.TextUtils; 62cfc3083927df14bf82403b20a45ae303a01c39f5Roger Jönssonimport android.text.method.KeyListener; 63cfc3083927df14bf82403b20a45ae303a01c39f5Roger Jönssonimport android.text.method.MetaKeyKeyListener; 64cfc3083927df14bf82403b20a45ae303a01c39f5Roger Jönssonimport android.text.method.MovementMethod; 652bfdd428c56c7524d1a11979f200a1762866032dAndreas Huberimport android.text.method.WordIterator; 662bfdd428c56c7524d1a11979f200a1762866032dAndreas Huberimport android.text.style.EasyEditSpan; 672bfdd428c56c7524d1a11979f200a1762866032dAndreas Huberimport android.text.style.SuggestionRangeSpan; 682bfdd428c56c7524d1a11979f200a1762866032dAndreas Huberimport android.text.style.SuggestionSpan; 692bfdd428c56c7524d1a11979f200a1762866032dAndreas Huberimport android.text.style.TextAppearanceSpan; 702bfdd428c56c7524d1a11979f200a1762866032dAndreas Huberimport android.text.style.URLSpan; 712bfdd428c56c7524d1a11979f200a1762866032dAndreas Huberimport android.util.DisplayMetrics; 722bfdd428c56c7524d1a11979f200a1762866032dAndreas Huberimport android.util.Log; 732bfdd428c56c7524d1a11979f200a1762866032dAndreas Huberimport android.view.ActionMode; 742bfdd428c56c7524d1a11979f200a1762866032dAndreas Huberimport android.view.ActionMode.Callback; 752bfdd428c56c7524d1a11979f200a1762866032dAndreas Huberimport android.view.DisplayListCanvas; 762bfdd428c56c7524d1a11979f200a1762866032dAndreas Huberimport android.view.DragEvent; 772bfdd428c56c7524d1a11979f200a1762866032dAndreas Huberimport android.view.Gravity; 782bfdd428c56c7524d1a11979f200a1762866032dAndreas Huberimport android.view.LayoutInflater; 792bfdd428c56c7524d1a11979f200a1762866032dAndreas Huberimport android.view.Menu; 80602f5bbd7596ec3fe447fde4329d5d4f0b370835Andreas Huberimport android.view.MenuItem; 811228d6b175de8b21787cbe0c6c4bb5642f4d555eChong Zhangimport android.view.MotionEvent; 82602f5bbd7596ec3fe447fde4329d5d4f0b370835Andreas Huberimport android.view.RenderNode; 83602f5bbd7596ec3fe447fde4329d5d4f0b370835Andreas Huberimport android.view.View; 842bfdd428c56c7524d1a11979f200a1762866032dAndreas Huberimport android.view.View.DragShadowBuilder; 852bfdd428c56c7524d1a11979f200a1762866032dAndreas Huberimport android.view.View.OnClickListener; 8657cea553cb19235553463412db5ad04c99835411Andreas Huberimport android.view.ViewConfiguration; 87ce84b2240497cd0923e190ae115e319e4c17d303Wei Jiaimport android.view.ViewGroup; 88ce84b2240497cd0923e190ae115e319e4c17d303Wei Jiaimport android.view.ViewGroup.LayoutParams; 89ce84b2240497cd0923e190ae115e319e4c17d303Wei Jiaimport android.view.ViewParent; 90ce84b2240497cd0923e190ae115e319e4c17d303Wei Jiaimport android.view.ViewTreeObserver; 91ce84b2240497cd0923e190ae115e319e4c17d303Wei Jiaimport android.view.WindowManager; 922bfdd428c56c7524d1a11979f200a1762866032dAndreas Huberimport android.view.inputmethod.CorrectionInfo; 932bfdd428c56c7524d1a11979f200a1762866032dAndreas Huberimport android.view.inputmethod.CursorAnchorInfo; 942bfdd428c56c7524d1a11979f200a1762866032dAndreas Huberimport android.view.inputmethod.EditorInfo; 952bfdd428c56c7524d1a11979f200a1762866032dAndreas Huberimport android.view.inputmethod.ExtractedText; 962bfdd428c56c7524d1a11979f200a1762866032dAndreas Huberimport android.view.inputmethod.ExtractedTextRequest; 971228d6b175de8b21787cbe0c6c4bb5642f4d555eChong Zhangimport android.view.inputmethod.InputConnection; 982bfdd428c56c7524d1a11979f200a1762866032dAndreas Huberimport android.view.inputmethod.InputMethodManager; 992bfdd428c56c7524d1a11979f200a1762866032dAndreas Huberimport android.widget.AdapterView.OnItemClickListener; 1002bfdd428c56c7524d1a11979f200a1762866032dAndreas Huberimport android.widget.TextView.Drawables; 10181dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhéimport android.widget.TextView.OnEditorActionListener; 1022bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber 1031d15ab58bf8239069ef343de6cb21aabf3ef7d78Lajos Molnarimport com.android.internal.util.ArrayUtils; 1042bfdd428c56c7524d1a11979f200a1762866032dAndreas Huberimport com.android.internal.util.GrowingArrayUtils; 1052bfdd428c56c7524d1a11979f200a1762866032dAndreas Huberimport com.android.internal.widget.EditableInputConnection; 1062bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber 1072bfdd428c56c7524d1a11979f200a1762866032dAndreas Huberimport java.text.BreakIterator; 10881dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhéimport java.util.Arrays; 10981dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhéimport java.util.Comparator; 11081dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhéimport java.util.HashMap; 11181e68448f3361eaf8618930471fdc3c21bdf5cbcAndreas Huberimport java.util.List; 11281dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé 11357cea553cb19235553463412db5ad04c99835411Andreas Huber/** 11457cea553cb19235553463412db5ad04c99835411Andreas Huber * Helper class used by TextView to handle editable text views. 11581dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé * 11681dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé * @hide 11781dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé */ 11881dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhépublic class Editor { 11981dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé private static final String TAG = "Editor"; 12081dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé private static final boolean DEBUG_UNDO = false; 121cfc3083927df14bf82403b20a45ae303a01c39f5Roger Jönsson 122180d1b96ee2312f1056a58e26884a89d25ab62c8Chong Zhang static final int BLINK = 500; 12357cea553cb19235553463412db5ad04c99835411Andreas Huber private static final float[] TEMP_POSITION = new float[2]; 12457cea553cb19235553463412db5ad04c99835411Andreas Huber private static int DRAG_SHADOW_MAX_TEXT_LENGTH = 20; 12557cea553cb19235553463412db5ad04c99835411Andreas Huber private static final float LINE_SLOP_MULTIPLIER_FOR_HANDLEVIEWS = 0.5f; 1262bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber private static final int UNSET_X_VALUE = -1; 1272bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber // Tag used when the Editor maintains its own separate UndoManager. 1282bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber private static final String UNDO_OWNER_TAG = "Editor"; 1295834181d3f168acb8ff4bf3eff1fd1186afb0bd4James Dong 1305834181d3f168acb8ff4bf3eff1fd1186afb0bd4James Dong // Ordering constants used to place the Action Mode items in their menu. 1315834181d3f168acb8ff4bf3eff1fd1186afb0bd4James Dong private static final int MENU_ITEM_ORDER_CUT = 1; 1321d15ab58bf8239069ef343de6cb21aabf3ef7d78Lajos Molnar private static final int MENU_ITEM_ORDER_COPY = 2; 1332bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber private static final int MENU_ITEM_ORDER_PASTE = 3; 1342bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber private static final int MENU_ITEM_ORDER_SHARE = 4; 1352bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber private static final int MENU_ITEM_ORDER_SELECT_ALL = 5; 1362bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber private static final int MENU_ITEM_ORDER_REPLACE = 6; 1372bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber private static final int MENU_ITEM_ORDER_PROCESS_TEXT_INTENT_ACTIONS_START = 10; 1382bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber 139180d1b96ee2312f1056a58e26884a89d25ab62c8Chong Zhang // Each Editor manages its own undo stack. 1402bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber private final UndoManager mUndoManager = new UndoManager(); 1412bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber private UndoOwner mUndoOwner = mUndoManager.getOwner(UNDO_OWNER_TAG, this); 1422bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber final UndoInputFilter mUndoInputFilter = new UndoInputFilter(this); 143840667883fd09d44015716d79bc3ac4d60edc0f0Andreas Huber boolean mAllowUndo = true; 1442bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber 1452bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber // Cursor Controllers. 1462bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber InsertionPointCursorController mInsertionPointCursorController; 1472bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber SelectionModifierCursorController mSelectionModifierCursorController; 1482bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber // Action mode used when text is selected or when actions on an insertion cursor are triggered. 1492bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber ActionMode mTextActionMode; 1502bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber boolean mInsertionControllerEnabled; 1512bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber boolean mSelectionControllerEnabled; 1522bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber 153bfd4d0d9fe0033abf3f55b94f30f6a58846a875eAndreas Huber // Used to highlight a word when it is corrected by the IME 154bfd4d0d9fe0033abf3f55b94f30f6a58846a875eAndreas Huber CorrectionHighlighter mCorrectionHighlighter; 155bfd4d0d9fe0033abf3f55b94f30f6a58846a875eAndreas Huber 156bfd4d0d9fe0033abf3f55b94f30f6a58846a875eAndreas Huber InputContentType mInputContentType; 157bfd4d0d9fe0033abf3f55b94f30f6a58846a875eAndreas Huber InputMethodState mInputMethodState; 158bfd4d0d9fe0033abf3f55b94f30f6a58846a875eAndreas Huber 159cfc3083927df14bf82403b20a45ae303a01c39f5Roger Jönsson private static class TextRenderNode { 160cfc3083927df14bf82403b20a45ae303a01c39f5Roger Jönsson RenderNode renderNode; 161cfc3083927df14bf82403b20a45ae303a01c39f5Roger Jönsson boolean isDirty; 162cfc3083927df14bf82403b20a45ae303a01c39f5Roger Jönsson public TextRenderNode(String name) { 163cfc3083927df14bf82403b20a45ae303a01c39f5Roger Jönsson isDirty = true; 164cfc3083927df14bf82403b20a45ae303a01c39f5Roger Jönsson renderNode = RenderNode.create(name, null); 165cfc3083927df14bf82403b20a45ae303a01c39f5Roger Jönsson } 166bfd4d0d9fe0033abf3f55b94f30f6a58846a875eAndreas Huber boolean needsRecord() { return isDirty || !renderNode.isValid(); } 167bfd4d0d9fe0033abf3f55b94f30f6a58846a875eAndreas Huber } 168bfd4d0d9fe0033abf3f55b94f30f6a58846a875eAndreas Huber TextRenderNode[] mTextRenderNodes; 169bfd4d0d9fe0033abf3f55b94f30f6a58846a875eAndreas Huber 170bfd4d0d9fe0033abf3f55b94f30f6a58846a875eAndreas Huber boolean mFrozenWithFocus; 171bfd4d0d9fe0033abf3f55b94f30f6a58846a875eAndreas Huber boolean mSelectionMoved; 172bfd4d0d9fe0033abf3f55b94f30f6a58846a875eAndreas Huber boolean mTouchFocusSelected; 173bfd4d0d9fe0033abf3f55b94f30f6a58846a875eAndreas Huber 174bfd4d0d9fe0033abf3f55b94f30f6a58846a875eAndreas Huber KeyListener mKeyListener; 175bfd4d0d9fe0033abf3f55b94f30f6a58846a875eAndreas Huber int mInputType = EditorInfo.TYPE_NULL; 176bfd4d0d9fe0033abf3f55b94f30f6a58846a875eAndreas Huber 177bfd4d0d9fe0033abf3f55b94f30f6a58846a875eAndreas Huber boolean mDiscardNextActionUp; 178bfd4d0d9fe0033abf3f55b94f30f6a58846a875eAndreas Huber boolean mIgnoreActionUpEvent; 179bfd4d0d9fe0033abf3f55b94f30f6a58846a875eAndreas Huber 180bfd4d0d9fe0033abf3f55b94f30f6a58846a875eAndreas Huber long mShowCursor; 181bfd4d0d9fe0033abf3f55b94f30f6a58846a875eAndreas Huber Blink mBlink; 182bfd4d0d9fe0033abf3f55b94f30f6a58846a875eAndreas Huber 183bfd4d0d9fe0033abf3f55b94f30f6a58846a875eAndreas Huber boolean mCursorVisible = true; 184bfd4d0d9fe0033abf3f55b94f30f6a58846a875eAndreas Huber boolean mSelectAllOnFocus; 185bfd4d0d9fe0033abf3f55b94f30f6a58846a875eAndreas Huber boolean mTextIsSelectable; 186bfd4d0d9fe0033abf3f55b94f30f6a58846a875eAndreas Huber 187bfd4d0d9fe0033abf3f55b94f30f6a58846a875eAndreas Huber CharSequence mError; 188bfd4d0d9fe0033abf3f55b94f30f6a58846a875eAndreas Huber boolean mErrorWasChanged; 1892bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber ErrorPopup mErrorPopup; 1902bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber 191180d1b96ee2312f1056a58e26884a89d25ab62c8Chong Zhang /** 192180d1b96ee2312f1056a58e26884a89d25ab62c8Chong Zhang * This flag is set if the TextView tries to display an error before it 193bfd4d0d9fe0033abf3f55b94f30f6a58846a875eAndreas Huber * is attached to the window (so its position is still unknown). 194bfd4d0d9fe0033abf3f55b94f30f6a58846a875eAndreas Huber * It causes the error to be shown later, when onAttachedToWindow() 1952bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber * is called. 1962bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber */ 1972bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber boolean mShowErrorAfterAttach; 1982bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber 1992bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber boolean mInBatchEditControllers; 2002bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber boolean mShowSoftInputOnFocus = true; 2012bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber boolean mPreserveDetachedSelection; 2022bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber boolean mTemporaryDetach; 203cfc3083927df14bf82403b20a45ae303a01c39f5Roger Jönsson 204f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih SuggestionsPopupWindow mSuggestionsPopupWindow; 205f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih SuggestionRangeSpan mSuggestionRangeSpan; 206f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih Runnable mShowSuggestionRunnable; 207cfc3083927df14bf82403b20a45ae303a01c39f5Roger Jönsson 208cfc3083927df14bf82403b20a45ae303a01c39f5Roger Jönsson final Drawable[] mCursorDrawable = new Drawable[2]; 209cfc3083927df14bf82403b20a45ae303a01c39f5Roger Jönsson int mCursorCount; // Current number of used mCursorDrawable: 0 (resource=0), 1 or 2 (split) 210cfc3083927df14bf82403b20a45ae303a01c39f5Roger Jönsson 211f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih private Drawable mSelectHandleLeft; 212f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih private Drawable mSelectHandleRight; 213f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih private Drawable mSelectHandleCenter; 214cfc3083927df14bf82403b20a45ae303a01c39f5Roger Jönsson 215cfc3083927df14bf82403b20a45ae303a01c39f5Roger Jönsson // Global listener that detects changes in the global position of the TextView 216cfc3083927df14bf82403b20a45ae303a01c39f5Roger Jönsson private PositionListener mPositionListener; 217cfc3083927df14bf82403b20a45ae303a01c39f5Roger Jönsson 218cfc3083927df14bf82403b20a45ae303a01c39f5Roger Jönsson float mLastDownPositionX, mLastDownPositionY; 219cfc3083927df14bf82403b20a45ae303a01c39f5Roger Jönsson Callback mCustomSelectionActionModeCallback; 220cfc3083927df14bf82403b20a45ae303a01c39f5Roger Jönsson Callback mCustomInsertionActionModeCallback; 221cfc3083927df14bf82403b20a45ae303a01c39f5Roger Jönsson 222cfc3083927df14bf82403b20a45ae303a01c39f5Roger Jönsson // Set when this TextView gained focus with some text selected. Will start selection mode. 223cfc3083927df14bf82403b20a45ae303a01c39f5Roger Jönsson boolean mCreatedWithASelection; 224cfc3083927df14bf82403b20a45ae303a01c39f5Roger Jönsson 225f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih boolean mDoubleTap = false; 226cfc3083927df14bf82403b20a45ae303a01c39f5Roger Jönsson 227cfc3083927df14bf82403b20a45ae303a01c39f5Roger Jönsson private Runnable mInsertionActionModeRunnable; 228180d1b96ee2312f1056a58e26884a89d25ab62c8Chong Zhang 229cfc3083927df14bf82403b20a45ae303a01c39f5Roger Jönsson // The span controller helps monitoring the changes to which the Editor needs to react: 230cfc3083927df14bf82403b20a45ae303a01c39f5Roger Jönsson // - EasyEditSpans, for which we have some UI to display on attach and on hide 231cfc3083927df14bf82403b20a45ae303a01c39f5Roger Jönsson // - SelectionSpans, for which we need to call updateSelection if an IME is attached 232cfc3083927df14bf82403b20a45ae303a01c39f5Roger Jönsson private SpanController mSpanController; 233cfc3083927df14bf82403b20a45ae303a01c39f5Roger Jönsson 2342bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber WordIterator mWordIterator; 2352bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber SpellChecker mSpellChecker; 236cfc3083927df14bf82403b20a45ae303a01c39f5Roger Jönsson 237cfc3083927df14bf82403b20a45ae303a01c39f5Roger Jönsson // This word iterator is set with text and used to determine word boundaries 2382bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber // when a user is selecting text. 2392bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber private WordIterator mWordIteratorWithText; 2402bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber // Indicate that the text in the word iterator needs to be updated. 2412bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber private boolean mUpdateWordIteratorText; 24249694688c82214f5fd9e969e177c9e126a240a26Andreas Huber 24349694688c82214f5fd9e969e177c9e126a240a26Andreas Huber private Rect mTempRect; 24449694688c82214f5fd9e969e177c9e126a240a26Andreas Huber 24549694688c82214f5fd9e969e177c9e126a240a26Andreas Huber private TextView mTextView; 24649694688c82214f5fd9e969e177c9e126a240a26Andreas Huber 24749694688c82214f5fd9e969e177c9e126a240a26Andreas Huber final CursorAnchorInfoNotifier mCursorAnchorInfoNotifier = new CursorAnchorInfoNotifier(); 24849694688c82214f5fd9e969e177c9e126a240a26Andreas Huber 2492bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber private final Runnable mShowFloatingToolbar = new Runnable() { 2502bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber @Override 2512bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber public void run() { 252cfc3083927df14bf82403b20a45ae303a01c39f5Roger Jönsson if (mTextActionMode != null) { 253cfc3083927df14bf82403b20a45ae303a01c39f5Roger Jönsson mTextActionMode.hide(0); // hide off. 254cfc3083927df14bf82403b20a45ae303a01c39f5Roger Jönsson } 255cfc3083927df14bf82403b20a45ae303a01c39f5Roger Jönsson } 256cfc3083927df14bf82403b20a45ae303a01c39f5Roger Jönsson }; 257cfc3083927df14bf82403b20a45ae303a01c39f5Roger Jönsson 258cfc3083927df14bf82403b20a45ae303a01c39f5Roger Jönsson boolean mIsInsertionActionModeStartPending = false; 259cfc3083927df14bf82403b20a45ae303a01c39f5Roger Jönsson 2602bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber Editor(TextView textView) { 2612bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber mTextView = textView; 2622bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber // Synchronize the filter list, which places the undo input filter at the end. 2632bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber mTextView.setFilters(mTextView.getFilters()); 2642bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber } 2652bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber 2662bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber ParcelableParcel saveInstanceState() { 2672bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber ParcelableParcel state = new ParcelableParcel(getClass().getClassLoader()); 2682bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber Parcel parcel = state.getParcel(); 2692bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber mUndoManager.saveInstanceState(parcel); 2702bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber mUndoInputFilter.saveInstanceState(parcel); 2712bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber return state; 2722bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber } 2732bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber 2742bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber void restoreInstanceState(ParcelableParcel state) { 2752bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber Parcel parcel = state.getParcel(); 2762bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber mUndoManager.restoreInstanceState(parcel, state.getClassLoader()); 2772bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber mUndoInputFilter.restoreInstanceState(parcel); 2782bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber // Re-associate this object as the owner of undo state. 2792bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber mUndoOwner = mUndoManager.getOwner(UNDO_OWNER_TAG, this); 2802bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber } 2812bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber 2822bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber /** 2831d15ab58bf8239069ef343de6cb21aabf3ef7d78Lajos Molnar * Forgets all undo and redo operations for this Editor. 284ee736e9e74c5368db8d63214513c85cb74bb0183Andreas Huber */ 285ee736e9e74c5368db8d63214513c85cb74bb0183Andreas Huber void forgetUndoRedo() { 286ee736e9e74c5368db8d63214513c85cb74bb0183Andreas Huber UndoOwner[] owners = { mUndoOwner }; 2878d237a5ce1e3c1dbc1d538f47e68cff2cc52d799Robert Shih mUndoManager.forgetUndos(owners, -1 /* all */); 2888d237a5ce1e3c1dbc1d538f47e68cff2cc52d799Robert Shih mUndoManager.forgetRedos(owners, -1 /* all */); 2898d237a5ce1e3c1dbc1d538f47e68cff2cc52d799Robert Shih } 2908d237a5ce1e3c1dbc1d538f47e68cff2cc52d799Robert Shih 2918d237a5ce1e3c1dbc1d538f47e68cff2cc52d799Robert Shih boolean canUndo() { 2928d237a5ce1e3c1dbc1d538f47e68cff2cc52d799Robert Shih UndoOwner[] owners = { mUndoOwner }; 2938d237a5ce1e3c1dbc1d538f47e68cff2cc52d799Robert Shih return mAllowUndo && mUndoManager.countUndos(owners) > 0; 294ee736e9e74c5368db8d63214513c85cb74bb0183Andreas Huber } 295ee736e9e74c5368db8d63214513c85cb74bb0183Andreas Huber 296ee736e9e74c5368db8d63214513c85cb74bb0183Andreas Huber boolean canRedo() { 2972bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber UndoOwner[] owners = { mUndoOwner }; 2988d237a5ce1e3c1dbc1d538f47e68cff2cc52d799Robert Shih return mAllowUndo && mUndoManager.countRedos(owners) > 0; 299ee736e9e74c5368db8d63214513c85cb74bb0183Andreas Huber } 3002bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber 3012bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber void undo() { 3022bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber if (!mAllowUndo) { 3032bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber return; 304f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih } 3052bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber UndoOwner[] owners = { mUndoOwner }; 3062bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber mUndoManager.undo(owners, 1); // Undo 1 action. 307641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih } 308641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih 309641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih void redo() { 310641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih if (!mAllowUndo) { 311641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih return; 312641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih } 313f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih UndoOwner[] owners = { mUndoOwner }; 314641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih mUndoManager.redo(owners, 1); // Redo 1 action. 315f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih } 316f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih 317c622c584ea0ffb807eb9f711aa30016eae069c92Takahiro Aizawa void replace() { 318c622c584ea0ffb807eb9f711aa30016eae069c92Takahiro Aizawa int middle = (mTextView.getSelectionStart() + mTextView.getSelectionEnd()) / 2; 319c622c584ea0ffb807eb9f711aa30016eae069c92Takahiro Aizawa stopTextActionMode(); 320641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih Selection.setSelection((Spannable) mTextView.getText(), middle); 321641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih showSuggestions(); 322641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih } 323c622c584ea0ffb807eb9f711aa30016eae069c92Takahiro Aizawa 324c622c584ea0ffb807eb9f711aa30016eae069c92Takahiro Aizawa void onAttachedToWindow() { 325c622c584ea0ffb807eb9f711aa30016eae069c92Takahiro Aizawa if (mShowErrorAfterAttach) { 326c622c584ea0ffb807eb9f711aa30016eae069c92Takahiro Aizawa showError(); 327641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih mShowErrorAfterAttach = false; 328641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih } 329641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih mTemporaryDetach = false; 330641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih 331641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 332641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih // No need to create the controller. 333641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih // The get method will add the listener on controller creation. 334641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih if (mInsertionPointCursorController != null) { 335641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih observer.addOnTouchModeChangeListener(mInsertionPointCursorController); 336f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih } 337641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih if (mSelectionModifierCursorController != null) { 338641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih mSelectionModifierCursorController.resetTouchOffsets(); 339641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih observer.addOnTouchModeChangeListener(mSelectionModifierCursorController); 340641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih } 341641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih updateSpellCheckSpans(0, mTextView.getText().length(), 342641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih true /* create the spell checker if needed */); 343641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih 344641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih if (mTextView.hasTransientState() && 345641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih mTextView.getSelectionStart() != mTextView.getSelectionEnd()) { 346641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih // Since transient state is reference counted make sure it stays matched 347641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih // with our own calls to it for managing selection. 348641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih // The action mode callback will set this back again when/if the action mode starts. 349641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih mTextView.setHasTransientState(false); 350641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih 351641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih // We had an active selection from before, start the selection mode. 352641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih startSelectionActionMode(); 353641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih } 354f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih 355641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih getPositionListener().addSubscriber(mCursorAnchorInfoNotifier, true); 356641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih resumeBlink(); 357641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih } 358f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih 359f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih void onDetachedFromWindow() { 360641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih getPositionListener().removeSubscriber(mCursorAnchorInfoNotifier); 361641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih 362641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih if (mError != null) { 363641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih hideError(); 364641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih } 365641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih 366641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih suspendBlink(); 367641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih 368641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih if (mInsertionPointCursorController != null) { 369641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih mInsertionPointCursorController.onDetached(); 370641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih } 371641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih 372641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih if (mSelectionModifierCursorController != null) { 373641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih mSelectionModifierCursorController.onDetached(); 374641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih } 375641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih 376641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih if (mShowSuggestionRunnable != null) { 377641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih mTextView.removeCallbacks(mShowSuggestionRunnable); 378641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih } 379f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih 380f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih // Cancel the single tap delayed runnable. 381f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih if (mInsertionActionModeRunnable != null) { 382f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih mTextView.removeCallbacks(mInsertionActionModeRunnable); 383641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih } 384641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih 385641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih mTextView.removeCallbacks(mShowFloatingToolbar); 386f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih 387f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih destroyDisplayListsData(); 388f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih 389f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih if (mSpellChecker != null) { 390f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih mSpellChecker.closeSession(); 391f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih // Forces the creation of a new SpellChecker next time this window is created. 392f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih // Will handle the cases where the settings has been changed in the meantime. 393f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih mSpellChecker = null; 394f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih } 395f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih 396f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih mPreserveDetachedSelection = true; 397f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih hideControllers(); 398f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih stopTextActionMode(); 399f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih mPreserveDetachedSelection = false; 400f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih mTemporaryDetach = false; 401f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih } 402f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih 403f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih private void destroyDisplayListsData() { 404f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih if (mTextRenderNodes != null) { 405f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih for (int i = 0; i < mTextRenderNodes.length; i++) { 406f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih RenderNode displayList = mTextRenderNodes[i] != null 407f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih ? mTextRenderNodes[i].renderNode : null; 408f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih if (displayList != null && displayList.isValid()) { 409f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih displayList.destroyDisplayListData(); 410f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih } 411f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih } 412f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih } 413f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih } 414f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih 415f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih private void showError() { 416f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih if (mTextView.getWindowToken() == null) { 417f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih mShowErrorAfterAttach = true; 418f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih return; 419f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih } 420f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih 421f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih if (mErrorPopup == null) { 422f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih LayoutInflater inflater = LayoutInflater.from(mTextView.getContext()); 423f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih final TextView err = (TextView) inflater.inflate( 424f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih com.android.internal.R.layout.textview_hint, null); 425f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih 426f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih final float scale = mTextView.getResources().getDisplayMetrics().density; 427f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih mErrorPopup = new ErrorPopup(err, (int)(200 * scale + 0.5f), (int)(50 * scale + 0.5f)); 428f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih mErrorPopup.setFocusable(false); 429f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih // The user is entering text, so the input method is needed. We 430f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih // don't want the popup to be displayed on top of it. 431f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih mErrorPopup.setInputMethodMode(PopupWindow.INPUT_METHOD_NEEDED); 432f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih } 433f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih 434f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih TextView tv = (TextView) mErrorPopup.getContentView(); 435f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih chooseSize(mErrorPopup, mError, tv); 436f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih tv.setText(mError); 437f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih 438f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih mErrorPopup.showAsDropDown(mTextView, getErrorX(), getErrorY()); 439f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih mErrorPopup.fixDirection(mErrorPopup.isAboveAnchor()); 440f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih } 441f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih 442f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih public void setError(CharSequence error, Drawable icon) { 443f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih mError = TextUtils.stringOrSpannedString(error); 444f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih mErrorWasChanged = true; 4452bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber 4462bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber if (mError == null) { 4473f27436a9346f043f52265da1e6a74cde2bffd4dLajos Molnar setErrorIcon(null); 4482bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber if (mErrorPopup != null) { 4492bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber if (mErrorPopup.isShowing()) { 4502bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber mErrorPopup.dismiss(); 4512bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber } 4522bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber 453ee736e9e74c5368db8d63214513c85cb74bb0183Andreas Huber mErrorPopup = null; 454ee736e9e74c5368db8d63214513c85cb74bb0183Andreas Huber } 455ee736e9e74c5368db8d63214513c85cb74bb0183Andreas Huber mShowErrorAfterAttach = false; 4568d237a5ce1e3c1dbc1d538f47e68cff2cc52d799Robert Shih } else { 457ee736e9e74c5368db8d63214513c85cb74bb0183Andreas Huber setErrorIcon(icon); 458ee736e9e74c5368db8d63214513c85cb74bb0183Andreas Huber if (mTextView.isFocused()) { 459ee736e9e74c5368db8d63214513c85cb74bb0183Andreas Huber showError(); 4608d237a5ce1e3c1dbc1d538f47e68cff2cc52d799Robert Shih } 461ee736e9e74c5368db8d63214513c85cb74bb0183Andreas Huber } 462ee736e9e74c5368db8d63214513c85cb74bb0183Andreas Huber } 463ee736e9e74c5368db8d63214513c85cb74bb0183Andreas Huber 464ee736e9e74c5368db8d63214513c85cb74bb0183Andreas Huber private void setErrorIcon(Drawable icon) { 465ee736e9e74c5368db8d63214513c85cb74bb0183Andreas Huber Drawables dr = mTextView.mDrawables; 466ee736e9e74c5368db8d63214513c85cb74bb0183Andreas Huber if (dr == null) { 467ee736e9e74c5368db8d63214513c85cb74bb0183Andreas Huber mTextView.mDrawables = dr = new Drawables(mTextView.getContext()); 468ee736e9e74c5368db8d63214513c85cb74bb0183Andreas Huber } 469641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih dr.setErrorDrawable(icon, mTextView); 470641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih 471641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih mTextView.resetResolvedDrawables(); 472f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih mTextView.invalidate(); 473f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih mTextView.requestLayout(); 474f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih } 4752bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber 4762bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber private void hideError() { 4772bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber if (mErrorPopup != null) { 4782bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber if (mErrorPopup.isShowing()) { 4792bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber mErrorPopup.dismiss(); 4802bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber } 4812bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber } 4822bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber 4832bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber mShowErrorAfterAttach = false; 4847f475c34ffc8e35345f2cceee2ef56a50bb5fea6Andreas Huber } 4852bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber 4867f475c34ffc8e35345f2cceee2ef56a50bb5fea6Andreas Huber /** 487ced1c2f8f6c422063092f5cc5c675ccdebb2dc10Chong Zhang * Returns the X offset to make the pointy top of the error point 4887f475c34ffc8e35345f2cceee2ef56a50bb5fea6Andreas Huber * at the middle of the error icon. 4897f475c34ffc8e35345f2cceee2ef56a50bb5fea6Andreas Huber */ 4907f475c34ffc8e35345f2cceee2ef56a50bb5fea6Andreas Huber private int getErrorX() { 4917f475c34ffc8e35345f2cceee2ef56a50bb5fea6Andreas Huber /* 4924b7069dac546ad21cf62ca6132d50ea41857d08eChong Zhang * The "25" is the distance between the point and the right edge 4934b7069dac546ad21cf62ca6132d50ea41857d08eChong Zhang * of the background 4944b7069dac546ad21cf62ca6132d50ea41857d08eChong Zhang */ 4954b7069dac546ad21cf62ca6132d50ea41857d08eChong Zhang final float scale = mTextView.getResources().getDisplayMetrics().density; 4967f475c34ffc8e35345f2cceee2ef56a50bb5fea6Andreas Huber 4977f475c34ffc8e35345f2cceee2ef56a50bb5fea6Andreas Huber final Drawables dr = mTextView.mDrawables; 4987f475c34ffc8e35345f2cceee2ef56a50bb5fea6Andreas Huber 499641e0c718da1c58e5b89379f60465c4e564ebb73Robert Shih final int layoutDirection = mTextView.getLayoutDirection(); 5002bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber int errorX; 5017f475c34ffc8e35345f2cceee2ef56a50bb5fea6Andreas Huber int offset; 5022bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber switch (layoutDirection) { 5032bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber default: 5047f475c34ffc8e35345f2cceee2ef56a50bb5fea6Andreas Huber case View.LAYOUT_DIRECTION_LTR: 5052bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber offset = - (dr != null ? dr.mDrawableSizeRight : 0) / 2 + (int) (25 * scale + 0.5f); 5062bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber errorX = mTextView.getWidth() - mErrorPopup.getWidth() - 5077f475c34ffc8e35345f2cceee2ef56a50bb5fea6Andreas Huber mTextView.getPaddingRight() + offset; 5082bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber break; 5092bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber case View.LAYOUT_DIRECTION_RTL: 5102bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber offset = (dr != null ? dr.mDrawableSizeLeft : 0) / 2 - (int) (25 * scale + 0.5f); 5112bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber errorX = mTextView.getPaddingLeft() + offset; 5124ad74b2b4507c8b2714b7b7584578d2d43ae2633Wei Jia break; 5134ad74b2b4507c8b2714b7b7584578d2d43ae2633Wei Jia } 5148d237a5ce1e3c1dbc1d538f47e68cff2cc52d799Robert Shih return errorX; 5158d237a5ce1e3c1dbc1d538f47e68cff2cc52d799Robert Shih } 5168d237a5ce1e3c1dbc1d538f47e68cff2cc52d799Robert Shih 5178d237a5ce1e3c1dbc1d538f47e68cff2cc52d799Robert Shih /** 5188d237a5ce1e3c1dbc1d538f47e68cff2cc52d799Robert Shih * Returns the Y offset to make the pointy top of the error point 5198d237a5ce1e3c1dbc1d538f47e68cff2cc52d799Robert Shih * at the bottom of the error icon. 5208d237a5ce1e3c1dbc1d538f47e68cff2cc52d799Robert Shih */ 5218d237a5ce1e3c1dbc1d538f47e68cff2cc52d799Robert Shih private int getErrorY() { 5228d237a5ce1e3c1dbc1d538f47e68cff2cc52d799Robert Shih /* 5238d237a5ce1e3c1dbc1d538f47e68cff2cc52d799Robert Shih * Compound, not extended, because the icon is not clipped 5248d237a5ce1e3c1dbc1d538f47e68cff2cc52d799Robert Shih * if the text height is smaller. 5258d237a5ce1e3c1dbc1d538f47e68cff2cc52d799Robert Shih */ 5268d237a5ce1e3c1dbc1d538f47e68cff2cc52d799Robert Shih final int compoundPaddingTop = mTextView.getCompoundPaddingTop(); 5278d237a5ce1e3c1dbc1d538f47e68cff2cc52d799Robert Shih int vspace = mTextView.getBottom() - mTextView.getTop() - 5288d237a5ce1e3c1dbc1d538f47e68cff2cc52d799Robert Shih mTextView.getCompoundPaddingBottom() - compoundPaddingTop; 5298d237a5ce1e3c1dbc1d538f47e68cff2cc52d799Robert Shih 5308d237a5ce1e3c1dbc1d538f47e68cff2cc52d799Robert Shih final Drawables dr = mTextView.mDrawables; 5318d237a5ce1e3c1dbc1d538f47e68cff2cc52d799Robert Shih 5328d237a5ce1e3c1dbc1d538f47e68cff2cc52d799Robert Shih final int layoutDirection = mTextView.getLayoutDirection(); 5338d237a5ce1e3c1dbc1d538f47e68cff2cc52d799Robert Shih int height; 5348d237a5ce1e3c1dbc1d538f47e68cff2cc52d799Robert Shih switch (layoutDirection) { 5358d237a5ce1e3c1dbc1d538f47e68cff2cc52d799Robert Shih default: 5368d237a5ce1e3c1dbc1d538f47e68cff2cc52d799Robert Shih case View.LAYOUT_DIRECTION_LTR: 5378d237a5ce1e3c1dbc1d538f47e68cff2cc52d799Robert Shih height = (dr != null ? dr.mDrawableHeightRight : 0); 5388d237a5ce1e3c1dbc1d538f47e68cff2cc52d799Robert Shih break; 5394ad74b2b4507c8b2714b7b7584578d2d43ae2633Wei Jia case View.LAYOUT_DIRECTION_RTL: 5404ad74b2b4507c8b2714b7b7584578d2d43ae2633Wei Jia height = (dr != null ? dr.mDrawableHeightLeft : 0); 5418d237a5ce1e3c1dbc1d538f47e68cff2cc52d799Robert Shih break; 5422bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber } 5432bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber 5442bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber int icontop = compoundPaddingTop + (vspace - height) / 2; 5452bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber 5462bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber /* 5472bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber * The "2" is the distance between the point and the top edge 5482bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber * of the background. 54949694688c82214f5fd9e969e177c9e126a240a26Andreas Huber */ 55049694688c82214f5fd9e969e177c9e126a240a26Andreas Huber final float scale = mTextView.getResources().getDisplayMetrics().density; 55149694688c82214f5fd9e969e177c9e126a240a26Andreas Huber return icontop + height - mTextView.getHeight() - (int) (2 * scale + 0.5f); 55249694688c82214f5fd9e969e177c9e126a240a26Andreas Huber } 55349694688c82214f5fd9e969e177c9e126a240a26Andreas Huber 55449694688c82214f5fd9e969e177c9e126a240a26Andreas Huber void createInputContentTypeIfNeeded() { 5552bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber if (mInputContentType == null) { 5562d8bedd05437b6fccdbc6bf70f673ffd86744d59Andreas Huber mInputContentType = new InputContentType(); 5572d8bedd05437b6fccdbc6bf70f673ffd86744d59Andreas Huber } 5582bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber } 5592bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber 5602bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber void createInputMethodStateIfNeeded() { 5612bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber if (mInputMethodState == null) { 562df64d15042bbd5e0e4933ac49bf3c177dd94752cSteve Block mInputMethodState = new InputMethodState(); 5632bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber } 5642bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber } 5652bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber 56649694688c82214f5fd9e969e177c9e126a240a26Andreas Huber boolean isCursorVisible() { 56749694688c82214f5fd9e969e177c9e126a240a26Andreas Huber // The default value is true, even when there is no associated Editor 56849694688c82214f5fd9e969e177c9e126a240a26Andreas Huber return mCursorVisible && mTextView.isTextEditable(); 56949694688c82214f5fd9e969e177c9e126a240a26Andreas Huber } 57049694688c82214f5fd9e969e177c9e126a240a26Andreas Huber 57149694688c82214f5fd9e969e177c9e126a240a26Andreas Huber void prepareCursorControllers() { 57249694688c82214f5fd9e969e177c9e126a240a26Andreas Huber boolean windowSupportsHandles = false; 57349694688c82214f5fd9e969e177c9e126a240a26Andreas Huber 57449694688c82214f5fd9e969e177c9e126a240a26Andreas Huber ViewGroup.LayoutParams params = mTextView.getRootView().getLayoutParams(); 57549694688c82214f5fd9e969e177c9e126a240a26Andreas Huber if (params instanceof WindowManager.LayoutParams) { 57649694688c82214f5fd9e969e177c9e126a240a26Andreas Huber WindowManager.LayoutParams windowParams = (WindowManager.LayoutParams) params; 57749694688c82214f5fd9e969e177c9e126a240a26Andreas Huber windowSupportsHandles = windowParams.type < WindowManager.LayoutParams.FIRST_SUB_WINDOW 57849694688c82214f5fd9e969e177c9e126a240a26Andreas Huber || windowParams.type > WindowManager.LayoutParams.LAST_SUB_WINDOW; 57949694688c82214f5fd9e969e177c9e126a240a26Andreas Huber } 58049694688c82214f5fd9e969e177c9e126a240a26Andreas Huber 58149694688c82214f5fd9e969e177c9e126a240a26Andreas Huber boolean enabled = windowSupportsHandles && mTextView.getLayout() != null; 58249694688c82214f5fd9e969e177c9e126a240a26Andreas Huber mInsertionControllerEnabled = enabled && isCursorVisible(); 58349694688c82214f5fd9e969e177c9e126a240a26Andreas Huber mSelectionControllerEnabled = enabled && mTextView.textCanBeSelected(); 584f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih 58549694688c82214f5fd9e969e177c9e126a240a26Andreas Huber if (!mInsertionControllerEnabled) { 586f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih hideInsertionPointCursorController(); 587f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih if (mInsertionPointCursorController != null) { 58849694688c82214f5fd9e969e177c9e126a240a26Andreas Huber mInsertionPointCursorController.onDetached(); 58949694688c82214f5fd9e969e177c9e126a240a26Andreas Huber mInsertionPointCursorController = null; 59049694688c82214f5fd9e969e177c9e126a240a26Andreas Huber } 5911906e5c7492b9cbc88601365536a69e9a490c963Andreas Huber } 5921906e5c7492b9cbc88601365536a69e9a490c963Andreas Huber 5931906e5c7492b9cbc88601365536a69e9a490c963Andreas Huber if (!mSelectionControllerEnabled) { 5942bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber stopTextActionMode(); 5952bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber if (mSelectionModifierCursorController != null) { 5962bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber mSelectionModifierCursorController.onDetached(); 5972bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber mSelectionModifierCursorController = null; 5981906e5c7492b9cbc88601365536a69e9a490c963Andreas Huber } 5991906e5c7492b9cbc88601365536a69e9a490c963Andreas Huber } 600c9d1696d214d2175327067ccc1991bcb36976404Andreas Huber } 601c9d1696d214d2175327067ccc1991bcb36976404Andreas Huber 602c9d1696d214d2175327067ccc1991bcb36976404Andreas Huber void hideInsertionPointCursorController() { 6031906e5c7492b9cbc88601365536a69e9a490c963Andreas Huber if (mInsertionPointCursorController != null) { 6041906e5c7492b9cbc88601365536a69e9a490c963Andreas Huber mInsertionPointCursorController.hide(); 6052bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber } 6061906e5c7492b9cbc88601365536a69e9a490c963Andreas Huber } 6071906e5c7492b9cbc88601365536a69e9a490c963Andreas Huber 6082bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber /** 6091906e5c7492b9cbc88601365536a69e9a490c963Andreas Huber * Hides the insertion controller and stops text selection mode, hiding the selection controller 6102bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber */ 6112bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber void hideControllers() { 6122bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber hideCursorControllers(); 6132bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber hideSpanControllers(); 6142bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber } 615f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih 6162bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber private void hideSpanControllers() { 6172bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber if (mSpanController != null) { 6182bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber mSpanController.hide(); 6192bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber } 6202bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber } 6212bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber 6222bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber private void hideCursorControllers() { 6232bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber // When mTextView is not ExtractEditText, we need to distinguish two kinds of focus-lost. 6242bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber // One is the true focus lost where suggestions pop-up (if any) should be dismissed, and the 62549694688c82214f5fd9e969e177c9e126a240a26Andreas Huber // other is an side effect of showing the suggestions pop-up itself. We use isShowingUp() 626f1d261f1b5914ddc219a23b763ab19363eeedd85Robert Shih // to distinguish one from the other. 62749694688c82214f5fd9e969e177c9e126a240a26Andreas Huber if (mSuggestionsPopupWindow != null && ((mTextView.isInExtractedMode()) || 62849694688c82214f5fd9e969e177c9e126a240a26Andreas Huber !mSuggestionsPopupWindow.isShowingUp())) { 62949694688c82214f5fd9e969e177c9e126a240a26Andreas Huber // Should be done before hide insertion point controller since it triggers a show of it 63049694688c82214f5fd9e969e177c9e126a240a26Andreas Huber mSuggestionsPopupWindow.hide(); 63149694688c82214f5fd9e969e177c9e126a240a26Andreas Huber } 63249694688c82214f5fd9e969e177c9e126a240a26Andreas Huber hideInsertionPointCursorController(); 6332bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber } 6342bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber 6352bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber /** 6362bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber * Create new SpellCheckSpans on the modified region. 6372bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber */ 6382bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber private void updateSpellCheckSpans(int start, int end, boolean createSpellChecker) { 6392bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber // Remove spans whose adjacent characters are text not punctuation 6402bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber mTextView.removeAdjacentSuggestionSpans(start); 6412bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber mTextView.removeAdjacentSuggestionSpans(end); 6422bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber 6432bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber if (mTextView.isTextEditable() && mTextView.isSuggestionsEnabled() && 6442bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber !(mTextView.isInExtractedMode())) { 6452bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber if (mSpellChecker == null && createSpellChecker) { 6462bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber mSpellChecker = new SpellChecker(mTextView); 6472bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber } 6482bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber if (mSpellChecker != null) { 6492bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber mSpellChecker.spellCheck(start, end); 6502bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber } 651632740c58119a132ce19f6d498e39c5c3773971aChong Zhang } 652fef808d42a9c94b0b5ef3c3d5fb0a090edbc42daWei Jia } 653632740c58119a132ce19f6d498e39c5c3773971aChong Zhang 654632740c58119a132ce19f6d498e39c5c3773971aChong Zhang void onScreenStateChanged(int screenState) { 6552bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber switch (screenState) { 6562bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber case View.SCREEN_STATE_ON: 6572bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber resumeBlink(); 6582bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber break; 6592bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber case View.SCREEN_STATE_OFF: 6602bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber suspendBlink(); 6612bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber break; 6622bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber } 6632bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber } 6642bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber 6652bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber private void suspendBlink() { 6662bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber if (mBlink != null) { 6672bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber mBlink.cancel(); 6682bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber } 6692bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber } 6702bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber 6712bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber private void resumeBlink() { 6722bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber if (mBlink != null) { 6732bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber mBlink.uncancel(); 6742bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber makeBlink(); 6751906e5c7492b9cbc88601365536a69e9a490c963Andreas Huber } 6762bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber } 6772bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber 6782bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber void adjustInputType(boolean password, boolean passwordInputType, 67981dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé boolean webPasswordInputType, boolean numberPasswordInputType) { 68081dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé // mInputType has been set from inputType, possibly modified by mInputMethod. 68181dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé // Specialize mInputType to [web]password if we have a text class and the original input 68281dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé // type was a password. 68381dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) { 68481dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé if (password || passwordInputType) { 6852bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) 6862bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD; 6872bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber } 6882bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber if (webPasswordInputType) { 6892bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) 6902bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD; 6912bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber } 6922bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber } else if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_NUMBER) { 6932bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber if (numberPasswordInputType) { 6942bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) 6952bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD; 6962bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber } 6972bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber } 6982bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber } 6992bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber 7002bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber private void chooseSize(PopupWindow pop, CharSequence text, TextView tv) { 7012bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber int wid = tv.getPaddingLeft() + tv.getPaddingRight(); 70249694688c82214f5fd9e969e177c9e126a240a26Andreas Huber int ht = tv.getPaddingTop() + tv.getPaddingBottom(); 70349694688c82214f5fd9e969e177c9e126a240a26Andreas Huber 70449694688c82214f5fd9e969e177c9e126a240a26Andreas Huber int defaultWidthInPixels = mTextView.getResources().getDimensionPixelSize( 70549694688c82214f5fd9e969e177c9e126a240a26Andreas Huber com.android.internal.R.dimen.textview_error_popup_default_width); 70649694688c82214f5fd9e969e177c9e126a240a26Andreas Huber Layout l = new StaticLayout(text, tv.getPaint(), defaultWidthInPixels, 70749694688c82214f5fd9e969e177c9e126a240a26Andreas Huber Layout.Alignment.ALIGN_NORMAL, 1, 0, true); 70849694688c82214f5fd9e969e177c9e126a240a26Andreas Huber float max = 0; 70949694688c82214f5fd9e969e177c9e126a240a26Andreas Huber for (int i = 0; i < l.getLineCount(); i++) { 7102bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber max = Math.max(max, l.getLineWidth(i)); 7112bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber } 7122bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber 7132bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber /* 7142bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber * Now set the popup size to be big enough for the text plus the border capped 7152bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber * to DEFAULT_MAX_POPUP_WIDTH 7162bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber */ 7171906e5c7492b9cbc88601365536a69e9a490c963Andreas Huber pop.setWidth(wid + (int) Math.ceil(max)); 7182bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber pop.setHeight(ht + l.getHeight()); 7192bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber } 7202bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber 7212bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber void setFrame() { 7222bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber if (mErrorPopup != null) { 7232bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber TextView tv = (TextView) mErrorPopup.getContentView(); 7242bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber chooseSize(mErrorPopup, mError, tv); 7252bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber mErrorPopup.update(mTextView, getErrorX(), getErrorY(), 7262bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber mErrorPopup.getWidth(), mErrorPopup.getHeight()); 7272bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber } 7282bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber } 7292bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber 7302bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber private int getWordStart(int offset) { 7312bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber // FIXME - For this and similar methods we're not doing anything to check if there's 7322bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber // a LocaleSpan in the text, this may be something we should try handling or checking for. 7332bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber int retOffset = getWordIteratorWithText().prevBoundary(offset); 7342bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber if (getWordIteratorWithText().isOnPunctuation(retOffset)) { 7352bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber // On punctuation boundary or within group of punctuation, find punctuation start. 7362bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber retOffset = getWordIteratorWithText().getPunctuationBeginning(offset); 7372bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber } else { 73881dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé // Not on a punctuation boundary, find the word start. 73981dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé retOffset = getWordIteratorWithText().getPrevWordBeginningOnTwoWordsBoundary(offset); 74081dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé } 74181dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé if (retOffset == BreakIterator.DONE) { 74281dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé return offset; 74381dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé } 74481dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé return retOffset; 74581dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé } 74681dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé 74781dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé private int getWordEnd(int offset) { 74881dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé int retOffset = getWordIteratorWithText().nextBoundary(offset); 74981dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé if (getWordIteratorWithText().isAfterPunctuation(retOffset)) { 75081dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé // On punctuation boundary or within group of punctuation, find punctuation end. 75181dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé retOffset = getWordIteratorWithText().getPunctuationEnd(offset); 75281dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé } else { 75381dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé // Not on a punctuation boundary, find the word end. 75481dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé retOffset = getWordIteratorWithText().getNextWordEndOnTwoWordBoundary(offset); 75581dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé } 75681dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé if (retOffset == BreakIterator.DONE) { 75781dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé return offset; 75881dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé } 7591d15ab58bf8239069ef343de6cb21aabf3ef7d78Lajos Molnar return retOffset; 76081dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé } 76181dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé 76281dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé /** 76381dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé * Adjusts selection to the word under last touch offset. Return true if the operation was 76481dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé * successfully performed. 76581dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé */ 76681dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé private boolean selectCurrentWord() { 76781dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé if (!mTextView.canSelectText()) { 76881dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé return false; 7697f475c34ffc8e35345f2cceee2ef56a50bb5fea6Andreas Huber } 7707f475c34ffc8e35345f2cceee2ef56a50bb5fea6Andreas Huber 7717f475c34ffc8e35345f2cceee2ef56a50bb5fea6Andreas Huber if (mTextView.hasPasswordTransformationMethod()) { 7727f475c34ffc8e35345f2cceee2ef56a50bb5fea6Andreas Huber // Always select all on a password field. 7737f475c34ffc8e35345f2cceee2ef56a50bb5fea6Andreas Huber // Cut/copy menu entries are not available for passwords, but being able to select all 7747f475c34ffc8e35345f2cceee2ef56a50bb5fea6Andreas Huber // is however useful to delete or paste to replace the entire content. 77581dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé return mTextView.selectAllText(); 776180d1b96ee2312f1056a58e26884a89d25ab62c8Chong Zhang } 77781dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé 77881dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé int inputType = mTextView.getInputType(); 77981dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé int klass = inputType & InputType.TYPE_MASK_CLASS; 78081dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé int variation = inputType & InputType.TYPE_MASK_VARIATION; 78181dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé 78281dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé // Specific text field types: select the entire text for these 78381dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé if (klass == InputType.TYPE_CLASS_NUMBER || 7842bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber klass == InputType.TYPE_CLASS_PHONE || 7850ad03bc59d090a0455f858d2f629834c105f6f37Fredrik Rosin klass == InputType.TYPE_CLASS_DATETIME || 7860ad03bc59d090a0455f858d2f629834c105f6f37Fredrik Rosin variation == InputType.TYPE_TEXT_VARIATION_URI || 7870ad03bc59d090a0455f858d2f629834c105f6f37Fredrik Rosin variation == InputType.TYPE_TEXT_VARIATION_EMAIL_ADDRESS || 7880ad03bc59d090a0455f858d2f629834c105f6f37Fredrik Rosin variation == InputType.TYPE_TEXT_VARIATION_WEB_EMAIL_ADDRESS || 7892bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber variation == InputType.TYPE_TEXT_VARIATION_FILTER) { 7902bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber return mTextView.selectAllText(); 7912bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber } 7922bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber 7932bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber long lastTouchOffsets = getLastTouchOffsets(); 7942bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber final int minOffset = TextUtils.unpackRangeStartFromLong(lastTouchOffsets); 7952bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber final int maxOffset = TextUtils.unpackRangeEndFromLong(lastTouchOffsets); 7967f475c34ffc8e35345f2cceee2ef56a50bb5fea6Andreas Huber 7977f475c34ffc8e35345f2cceee2ef56a50bb5fea6Andreas Huber // Safety check in case standard touch event handling has been bypassed 7987f475c34ffc8e35345f2cceee2ef56a50bb5fea6Andreas Huber if (minOffset < 0 || minOffset >= mTextView.getText().length()) return false; 7997f475c34ffc8e35345f2cceee2ef56a50bb5fea6Andreas Huber if (maxOffset < 0 || maxOffset >= mTextView.getText().length()) return false; 8007f475c34ffc8e35345f2cceee2ef56a50bb5fea6Andreas Huber 8017f475c34ffc8e35345f2cceee2ef56a50bb5fea6Andreas Huber int selectionStart, selectionEnd; 8022bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber 803180d1b96ee2312f1056a58e26884a89d25ab62c8Chong Zhang // If a URLSpan (web address, email, phone...) is found at that position, select it. 8042bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber URLSpan[] urlSpans = ((Spanned) mTextView.getText()). 8052bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber getSpans(minOffset, maxOffset, URLSpan.class); 8062bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber if (urlSpans.length >= 1) { 8072bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber URLSpan urlSpan = urlSpans[0]; 8082bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber selectionStart = ((Spanned) mTextView.getText()).getSpanStart(urlSpan); 8092bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber selectionEnd = ((Spanned) mTextView.getText()).getSpanEnd(urlSpan); 8102bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber } else { 8112bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber // FIXME - We should check if there's a LocaleSpan in the text, this may be 81281dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé // something we should try handling or checking for. 81381dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé final WordIterator wordIterator = getWordIterator(); 81481dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé wordIterator.setCharSequence(mTextView.getText(), minOffset, maxOffset); 81581dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé 81681dd60e0340ddcf7f1d5fb80b6c30906fabf201aOscar Rydhé selectionStart = wordIterator.getBeginning(minOffset); 8172bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber selectionEnd = wordIterator.getEnd(maxOffset); 8182bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber 8192bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber if (selectionStart == BreakIterator.DONE || selectionEnd == BreakIterator.DONE || 8202bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber selectionStart == selectionEnd) { 8212bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber // Possible when the word iterator does not properly handle the text's language 8222bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber long range = getCharClusterRange(minOffset); 8232bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber selectionStart = TextUtils.unpackRangeStartFromLong(range); 824180d1b96ee2312f1056a58e26884a89d25ab62c8Chong Zhang selectionEnd = TextUtils.unpackRangeEndFromLong(range); 825180d1b96ee2312f1056a58e26884a89d25ab62c8Chong Zhang } 826180d1b96ee2312f1056a58e26884a89d25ab62c8Chong Zhang } 827180d1b96ee2312f1056a58e26884a89d25ab62c8Chong Zhang 828180d1b96ee2312f1056a58e26884a89d25ab62c8Chong Zhang Selection.setSelection((Spannable) mTextView.getText(), selectionStart, selectionEnd); 829180d1b96ee2312f1056a58e26884a89d25ab62c8Chong Zhang return selectionEnd > selectionStart; 830180d1b96ee2312f1056a58e26884a89d25ab62c8Chong Zhang } 831180d1b96ee2312f1056a58e26884a89d25ab62c8Chong Zhang 832180d1b96ee2312f1056a58e26884a89d25ab62c8Chong Zhang void onLocaleChanged() { 833180d1b96ee2312f1056a58e26884a89d25ab62c8Chong Zhang // Will be re-created on demand in getWordIterator with the proper new locale 834180d1b96ee2312f1056a58e26884a89d25ab62c8Chong Zhang mWordIterator = null; 835180d1b96ee2312f1056a58e26884a89d25ab62c8Chong Zhang mWordIteratorWithText = null; 836c9ff2009a0a010eeaba80d76493fbf33fcb561c8Wei Jia } 837180d1b96ee2312f1056a58e26884a89d25ab62c8Chong Zhang 838180d1b96ee2312f1056a58e26884a89d25ab62c8Chong Zhang /** 839180d1b96ee2312f1056a58e26884a89d25ab62c8Chong Zhang * @hide 840180d1b96ee2312f1056a58e26884a89d25ab62c8Chong Zhang */ 841180d1b96ee2312f1056a58e26884a89d25ab62c8Chong Zhang public WordIterator getWordIterator() { 842180d1b96ee2312f1056a58e26884a89d25ab62c8Chong Zhang if (mWordIterator == null) { 843180d1b96ee2312f1056a58e26884a89d25ab62c8Chong Zhang mWordIterator = new WordIterator(mTextView.getTextServicesLocale()); 844180d1b96ee2312f1056a58e26884a89d25ab62c8Chong Zhang } 845180d1b96ee2312f1056a58e26884a89d25ab62c8Chong Zhang return mWordIterator; 846180d1b96ee2312f1056a58e26884a89d25ab62c8Chong Zhang } 847180d1b96ee2312f1056a58e26884a89d25ab62c8Chong Zhang 848180d1b96ee2312f1056a58e26884a89d25ab62c8Chong Zhang private WordIterator getWordIteratorWithText() { 849180d1b96ee2312f1056a58e26884a89d25ab62c8Chong Zhang if (mWordIteratorWithText == null) { 850180d1b96ee2312f1056a58e26884a89d25ab62c8Chong Zhang mWordIteratorWithText = new WordIterator(mTextView.getTextServicesLocale()); 851180d1b96ee2312f1056a58e26884a89d25ab62c8Chong Zhang mUpdateWordIteratorText = true; 852c9ff2009a0a010eeaba80d76493fbf33fcb561c8Wei Jia } 853180d1b96ee2312f1056a58e26884a89d25ab62c8Chong Zhang if (mUpdateWordIteratorText) { 854180d1b96ee2312f1056a58e26884a89d25ab62c8Chong Zhang // FIXME - Shouldn't copy all of the text as only the area of the text relevant 855180d1b96ee2312f1056a58e26884a89d25ab62c8Chong Zhang // to the user's selection is needed. A possible solution would be to 856180d1b96ee2312f1056a58e26884a89d25ab62c8Chong Zhang // copy some number N of characters near the selection and then when the 857180d1b96ee2312f1056a58e26884a89d25ab62c8Chong Zhang // user approaches N then we'd do another copy of the next N characters. 858180d1b96ee2312f1056a58e26884a89d25ab62c8Chong Zhang CharSequence text = mTextView.getText(); 8598d237a5ce1e3c1dbc1d538f47e68cff2cc52d799Robert Shih mWordIteratorWithText.setCharSequence(text, 0, text.length()); 8604ad74b2b4507c8b2714b7b7584578d2d43ae2633Wei Jia mUpdateWordIteratorText = false; 8614ad74b2b4507c8b2714b7b7584578d2d43ae2633Wei Jia } 8624ad74b2b4507c8b2714b7b7584578d2d43ae2633Wei Jia return mWordIteratorWithText; 8638d237a5ce1e3c1dbc1d538f47e68cff2cc52d799Robert Shih } 8648d237a5ce1e3c1dbc1d538f47e68cff2cc52d799Robert Shih 8658d237a5ce1e3c1dbc1d538f47e68cff2cc52d799Robert Shih private int getNextCursorOffset(int offset, boolean findAfterGivenOffset) { 8668d237a5ce1e3c1dbc1d538f47e68cff2cc52d799Robert Shih final Layout layout = mTextView.getLayout(); 8678d237a5ce1e3c1dbc1d538f47e68cff2cc52d799Robert Shih if (layout == null) return offset; 868180d1b96ee2312f1056a58e26884a89d25ab62c8Chong Zhang final CharSequence text = mTextView.getText(); 8692bfdd428c56c7524d1a11979f200a1762866032dAndreas Huber final int nextOffset = layout.getPaint().getTextRunCursor(text, 0, text.length(), 870 layout.isRtlCharAt(offset) ? Paint.DIRECTION_RTL : Paint.DIRECTION_LTR, 871 offset, findAfterGivenOffset ? Paint.CURSOR_AFTER : Paint.CURSOR_BEFORE); 872 return nextOffset == -1 ? offset : nextOffset; 873 } 874 875 private long getCharClusterRange(int offset) { 876 final int textLength = mTextView.getText().length(); 877 if (offset < textLength) { 878 return TextUtils.packRangeInLong(offset, getNextCursorOffset(offset, true)); 879 } 880 if (offset - 1 >= 0) { 881 return TextUtils.packRangeInLong(getNextCursorOffset(offset, false), offset); 882 } 883 return TextUtils.packRangeInLong(offset, offset); 884 } 885 886 private boolean touchPositionIsInSelection() { 887 int selectionStart = mTextView.getSelectionStart(); 888 int selectionEnd = mTextView.getSelectionEnd(); 889 890 if (selectionStart == selectionEnd) { 891 return false; 892 } 893 894 if (selectionStart > selectionEnd) { 895 int tmp = selectionStart; 896 selectionStart = selectionEnd; 897 selectionEnd = tmp; 898 Selection.setSelection((Spannable) mTextView.getText(), selectionStart, selectionEnd); 899 } 900 901 SelectionModifierCursorController selectionController = getSelectionController(); 902 int minOffset = selectionController.getMinTouchOffset(); 903 int maxOffset = selectionController.getMaxTouchOffset(); 904 905 return ((minOffset >= selectionStart) && (maxOffset < selectionEnd)); 906 } 907 908 private PositionListener getPositionListener() { 909 if (mPositionListener == null) { 910 mPositionListener = new PositionListener(); 911 } 912 return mPositionListener; 913 } 914 915 private interface TextViewPositionListener { 916 public void updatePosition(int parentPositionX, int parentPositionY, 917 boolean parentPositionChanged, boolean parentScrolled); 918 } 919 920 private boolean isPositionVisible(final float positionX, final float positionY) { 921 synchronized (TEMP_POSITION) { 922 final float[] position = TEMP_POSITION; 923 position[0] = positionX; 924 position[1] = positionY; 925 View view = mTextView; 926 927 while (view != null) { 928 if (view != mTextView) { 929 // Local scroll is already taken into account in positionX/Y 930 position[0] -= view.getScrollX(); 931 position[1] -= view.getScrollY(); 932 } 933 934 if (position[0] < 0 || position[1] < 0 || 935 position[0] > view.getWidth() || position[1] > view.getHeight()) { 936 return false; 937 } 938 939 if (!view.getMatrix().isIdentity()) { 940 view.getMatrix().mapPoints(position); 941 } 942 943 position[0] += view.getLeft(); 944 position[1] += view.getTop(); 945 946 final ViewParent parent = view.getParent(); 947 if (parent instanceof View) { 948 view = (View) parent; 949 } else { 950 // We've reached the ViewRoot, stop iterating 951 view = null; 952 } 953 } 954 } 955 956 // We've been able to walk up the view hierarchy and the position was never clipped 957 return true; 958 } 959 960 private boolean isOffsetVisible(int offset) { 961 Layout layout = mTextView.getLayout(); 962 if (layout == null) return false; 963 964 final int line = layout.getLineForOffset(offset); 965 final int lineBottom = layout.getLineBottom(line); 966 final int primaryHorizontal = (int) layout.getPrimaryHorizontal(offset); 967 return isPositionVisible(primaryHorizontal + mTextView.viewportToContentHorizontalOffset(), 968 lineBottom + mTextView.viewportToContentVerticalOffset()); 969 } 970 971 /** Returns true if the screen coordinates position (x,y) corresponds to a character displayed 972 * in the view. Returns false when the position is in the empty space of left/right of text. 973 */ 974 private boolean isPositionOnText(float x, float y) { 975 Layout layout = mTextView.getLayout(); 976 if (layout == null) return false; 977 978 final int line = mTextView.getLineAtCoordinate(y); 979 x = mTextView.convertToLocalHorizontalCoordinate(x); 980 981 if (x < layout.getLineLeft(line)) return false; 982 if (x > layout.getLineRight(line)) return false; 983 return true; 984 } 985 986 public boolean performLongClick(boolean handled) { 987 // Long press in empty space moves cursor and starts the insertion action mode. 988 if (!handled && !isPositionOnText(mLastDownPositionX, mLastDownPositionY) && 989 mInsertionControllerEnabled) { 990 final int offset = mTextView.getOffsetForPosition(mLastDownPositionX, 991 mLastDownPositionY); 992 stopTextActionMode(); 993 Selection.setSelection((Spannable) mTextView.getText(), offset); 994 getInsertionController().show(); 995 mIsInsertionActionModeStartPending = true; 996 handled = true; 997 } 998 999 if (!handled && mTextActionMode != null) { 1000 if (touchPositionIsInSelection()) { 1001 // Start a drag 1002 final int start = mTextView.getSelectionStart(); 1003 final int end = mTextView.getSelectionEnd(); 1004 CharSequence selectedText = mTextView.getTransformedText(start, end); 1005 ClipData data = ClipData.newPlainText(null, selectedText); 1006 DragLocalState localState = new DragLocalState(mTextView, start, end); 1007 mTextView.startDrag(data, getTextThumbnailBuilder(selectedText), localState, 1008 View.DRAG_FLAG_GLOBAL); 1009 stopTextActionMode(); 1010 } else { 1011 stopTextActionMode(); 1012 selectCurrentWordAndStartDrag(); 1013 } 1014 handled = true; 1015 } 1016 1017 // Start a new selection 1018 if (!handled) { 1019 handled = selectCurrentWordAndStartDrag(); 1020 } 1021 1022 return handled; 1023 } 1024 1025 private long getLastTouchOffsets() { 1026 SelectionModifierCursorController selectionController = getSelectionController(); 1027 final int minOffset = selectionController.getMinTouchOffset(); 1028 final int maxOffset = selectionController.getMaxTouchOffset(); 1029 return TextUtils.packRangeInLong(minOffset, maxOffset); 1030 } 1031 1032 void onFocusChanged(boolean focused, int direction) { 1033 mShowCursor = SystemClock.uptimeMillis(); 1034 ensureEndedBatchEdit(); 1035 1036 if (focused) { 1037 int selStart = mTextView.getSelectionStart(); 1038 int selEnd = mTextView.getSelectionEnd(); 1039 1040 // SelectAllOnFocus fields are highlighted and not selected. Do not start text selection 1041 // mode for these, unless there was a specific selection already started. 1042 final boolean isFocusHighlighted = mSelectAllOnFocus && selStart == 0 && 1043 selEnd == mTextView.getText().length(); 1044 1045 mCreatedWithASelection = mFrozenWithFocus && mTextView.hasSelection() && 1046 !isFocusHighlighted; 1047 1048 if (!mFrozenWithFocus || (selStart < 0 || selEnd < 0)) { 1049 // If a tap was used to give focus to that view, move cursor at tap position. 1050 // Has to be done before onTakeFocus, which can be overloaded. 1051 final int lastTapPosition = getLastTapPosition(); 1052 if (lastTapPosition >= 0) { 1053 Selection.setSelection((Spannable) mTextView.getText(), lastTapPosition); 1054 } 1055 1056 // Note this may have to be moved out of the Editor class 1057 MovementMethod mMovement = mTextView.getMovementMethod(); 1058 if (mMovement != null) { 1059 mMovement.onTakeFocus(mTextView, (Spannable) mTextView.getText(), direction); 1060 } 1061 1062 // The DecorView does not have focus when the 'Done' ExtractEditText button is 1063 // pressed. Since it is the ViewAncestor's mView, it requests focus before 1064 // ExtractEditText clears focus, which gives focus to the ExtractEditText. 1065 // This special case ensure that we keep current selection in that case. 1066 // It would be better to know why the DecorView does not have focus at that time. 1067 if (((mTextView.isInExtractedMode()) || mSelectionMoved) && 1068 selStart >= 0 && selEnd >= 0) { 1069 /* 1070 * Someone intentionally set the selection, so let them 1071 * do whatever it is that they wanted to do instead of 1072 * the default on-focus behavior. We reset the selection 1073 * here instead of just skipping the onTakeFocus() call 1074 * because some movement methods do something other than 1075 * just setting the selection in theirs and we still 1076 * need to go through that path. 1077 */ 1078 Selection.setSelection((Spannable) mTextView.getText(), selStart, selEnd); 1079 } 1080 1081 if (mSelectAllOnFocus) { 1082 mTextView.selectAllText(); 1083 } 1084 1085 mTouchFocusSelected = true; 1086 } 1087 1088 mFrozenWithFocus = false; 1089 mSelectionMoved = false; 1090 1091 if (mError != null) { 1092 showError(); 1093 } 1094 1095 makeBlink(); 1096 } else { 1097 if (mError != null) { 1098 hideError(); 1099 } 1100 // Don't leave us in the middle of a batch edit. 1101 mTextView.onEndBatchEdit(); 1102 1103 if (mTextView.isInExtractedMode()) { 1104 // terminateTextSelectionMode removes selection, which we want to keep when 1105 // ExtractEditText goes out of focus. 1106 final int selStart = mTextView.getSelectionStart(); 1107 final int selEnd = mTextView.getSelectionEnd(); 1108 hideControllers(); 1109 stopTextActionMode(); 1110 Selection.setSelection((Spannable) mTextView.getText(), selStart, selEnd); 1111 } else { 1112 if (mTemporaryDetach) mPreserveDetachedSelection = true; 1113 hideControllers(); 1114 stopTextActionMode(); 1115 if (mTemporaryDetach) mPreserveDetachedSelection = false; 1116 downgradeEasyCorrectionSpans(); 1117 } 1118 1119 // No need to create the controller 1120 if (mSelectionModifierCursorController != null) { 1121 mSelectionModifierCursorController.resetTouchOffsets(); 1122 } 1123 } 1124 } 1125 1126 /** 1127 * Downgrades to simple suggestions all the easy correction spans that are not a spell check 1128 * span. 1129 */ 1130 private void downgradeEasyCorrectionSpans() { 1131 CharSequence text = mTextView.getText(); 1132 if (text instanceof Spannable) { 1133 Spannable spannable = (Spannable) text; 1134 SuggestionSpan[] suggestionSpans = spannable.getSpans(0, 1135 spannable.length(), SuggestionSpan.class); 1136 for (int i = 0; i < suggestionSpans.length; i++) { 1137 int flags = suggestionSpans[i].getFlags(); 1138 if ((flags & SuggestionSpan.FLAG_EASY_CORRECT) != 0 1139 && (flags & SuggestionSpan.FLAG_MISSPELLED) == 0) { 1140 flags &= ~SuggestionSpan.FLAG_EASY_CORRECT; 1141 suggestionSpans[i].setFlags(flags); 1142 } 1143 } 1144 } 1145 } 1146 1147 void sendOnTextChanged(int start, int after) { 1148 updateSpellCheckSpans(start, start + after, false); 1149 1150 // Flip flag to indicate the word iterator needs to have the text reset. 1151 mUpdateWordIteratorText = true; 1152 1153 // Hide the controllers as soon as text is modified (typing, procedural...) 1154 // We do not hide the span controllers, since they can be added when a new text is 1155 // inserted into the text view (voice IME). 1156 hideCursorControllers(); 1157 // Reset drag accelerator. 1158 if (mSelectionModifierCursorController != null) { 1159 mSelectionModifierCursorController.resetTouchOffsets(); 1160 } 1161 stopTextActionMode(); 1162 } 1163 1164 private int getLastTapPosition() { 1165 // No need to create the controller at that point, no last tap position saved 1166 if (mSelectionModifierCursorController != null) { 1167 int lastTapPosition = mSelectionModifierCursorController.getMinTouchOffset(); 1168 if (lastTapPosition >= 0) { 1169 // Safety check, should not be possible. 1170 if (lastTapPosition > mTextView.getText().length()) { 1171 lastTapPosition = mTextView.getText().length(); 1172 } 1173 return lastTapPosition; 1174 } 1175 } 1176 1177 return -1; 1178 } 1179 1180 void onWindowFocusChanged(boolean hasWindowFocus) { 1181 if (hasWindowFocus) { 1182 if (mBlink != null) { 1183 mBlink.uncancel(); 1184 makeBlink(); 1185 } 1186 } else { 1187 if (mBlink != null) { 1188 mBlink.cancel(); 1189 } 1190 if (mInputContentType != null) { 1191 mInputContentType.enterDown = false; 1192 } 1193 // Order matters! Must be done before onParentLostFocus to rely on isShowingUp 1194 hideControllers(); 1195 if (mSuggestionsPopupWindow != null) { 1196 mSuggestionsPopupWindow.onParentLostFocus(); 1197 } 1198 1199 // Don't leave us in the middle of a batch edit. Same as in onFocusChanged 1200 ensureEndedBatchEdit(); 1201 } 1202 } 1203 1204 void onTouchEvent(MotionEvent event) { 1205 updateFloatingToolbarVisibility(event); 1206 1207 if (hasSelectionController()) { 1208 getSelectionController().onTouchEvent(event); 1209 } 1210 1211 if (mShowSuggestionRunnable != null) { 1212 mTextView.removeCallbacks(mShowSuggestionRunnable); 1213 mShowSuggestionRunnable = null; 1214 } 1215 1216 if (event.getActionMasked() == MotionEvent.ACTION_DOWN) { 1217 mLastDownPositionX = event.getX(); 1218 mLastDownPositionY = event.getY(); 1219 1220 // Reset this state; it will be re-set if super.onTouchEvent 1221 // causes focus to move to the view. 1222 mTouchFocusSelected = false; 1223 mIgnoreActionUpEvent = false; 1224 } 1225 } 1226 1227 private void updateFloatingToolbarVisibility(MotionEvent event) { 1228 if (mTextActionMode != null) { 1229 switch (event.getActionMasked()) { 1230 case MotionEvent.ACTION_MOVE: 1231 hideFloatingToolbar(); 1232 break; 1233 case MotionEvent.ACTION_UP: // fall through 1234 case MotionEvent.ACTION_CANCEL: 1235 showFloatingToolbar(); 1236 } 1237 } 1238 } 1239 1240 private void hideFloatingToolbar() { 1241 if (mTextActionMode != null) { 1242 mTextView.removeCallbacks(mShowFloatingToolbar); 1243 mTextActionMode.hide(ActionMode.DEFAULT_HIDE_DURATION); 1244 } 1245 } 1246 1247 private void showFloatingToolbar() { 1248 if (mTextActionMode != null) { 1249 // Delay "show" so it doesn't interfere with click confirmations 1250 // or double-clicks that could "dismiss" the floating toolbar. 1251 int delay = ViewConfiguration.getDoubleTapTimeout(); 1252 mTextView.postDelayed(mShowFloatingToolbar, delay); 1253 } 1254 } 1255 1256 public void beginBatchEdit() { 1257 mInBatchEditControllers = true; 1258 final InputMethodState ims = mInputMethodState; 1259 if (ims != null) { 1260 int nesting = ++ims.mBatchEditNesting; 1261 if (nesting == 1) { 1262 ims.mCursorChanged = false; 1263 ims.mChangedDelta = 0; 1264 if (ims.mContentChanged) { 1265 // We already have a pending change from somewhere else, 1266 // so turn this into a full update. 1267 ims.mChangedStart = 0; 1268 ims.mChangedEnd = mTextView.getText().length(); 1269 } else { 1270 ims.mChangedStart = EXTRACT_UNKNOWN; 1271 ims.mChangedEnd = EXTRACT_UNKNOWN; 1272 ims.mContentChanged = false; 1273 } 1274 mUndoInputFilter.beginBatchEdit(); 1275 mTextView.onBeginBatchEdit(); 1276 } 1277 } 1278 } 1279 1280 public void endBatchEdit() { 1281 mInBatchEditControllers = false; 1282 final InputMethodState ims = mInputMethodState; 1283 if (ims != null) { 1284 int nesting = --ims.mBatchEditNesting; 1285 if (nesting == 0) { 1286 finishBatchEdit(ims); 1287 } 1288 } 1289 } 1290 1291 void ensureEndedBatchEdit() { 1292 final InputMethodState ims = mInputMethodState; 1293 if (ims != null && ims.mBatchEditNesting != 0) { 1294 ims.mBatchEditNesting = 0; 1295 finishBatchEdit(ims); 1296 } 1297 } 1298 1299 void finishBatchEdit(final InputMethodState ims) { 1300 mTextView.onEndBatchEdit(); 1301 mUndoInputFilter.endBatchEdit(); 1302 1303 if (ims.mContentChanged || ims.mSelectionModeChanged) { 1304 mTextView.updateAfterEdit(); 1305 reportExtractedText(); 1306 } else if (ims.mCursorChanged) { 1307 // Cheesy way to get us to report the current cursor location. 1308 mTextView.invalidateCursor(); 1309 } 1310 // sendUpdateSelection knows to avoid sending if the selection did 1311 // not actually change. 1312 sendUpdateSelection(); 1313 } 1314 1315 static final int EXTRACT_NOTHING = -2; 1316 static final int EXTRACT_UNKNOWN = -1; 1317 1318 boolean extractText(ExtractedTextRequest request, ExtractedText outText) { 1319 return extractTextInternal(request, EXTRACT_UNKNOWN, EXTRACT_UNKNOWN, 1320 EXTRACT_UNKNOWN, outText); 1321 } 1322 1323 private boolean extractTextInternal(@Nullable ExtractedTextRequest request, 1324 int partialStartOffset, int partialEndOffset, int delta, 1325 @Nullable ExtractedText outText) { 1326 if (request == null || outText == null) { 1327 return false; 1328 } 1329 1330 final CharSequence content = mTextView.getText(); 1331 if (content == null) { 1332 return false; 1333 } 1334 1335 if (partialStartOffset != EXTRACT_NOTHING) { 1336 final int N = content.length(); 1337 if (partialStartOffset < 0) { 1338 outText.partialStartOffset = outText.partialEndOffset = -1; 1339 partialStartOffset = 0; 1340 partialEndOffset = N; 1341 } else { 1342 // Now use the delta to determine the actual amount of text 1343 // we need. 1344 partialEndOffset += delta; 1345 // Adjust offsets to ensure we contain full spans. 1346 if (content instanceof Spanned) { 1347 Spanned spanned = (Spanned)content; 1348 Object[] spans = spanned.getSpans(partialStartOffset, 1349 partialEndOffset, ParcelableSpan.class); 1350 int i = spans.length; 1351 while (i > 0) { 1352 i--; 1353 int j = spanned.getSpanStart(spans[i]); 1354 if (j < partialStartOffset) partialStartOffset = j; 1355 j = spanned.getSpanEnd(spans[i]); 1356 if (j > partialEndOffset) partialEndOffset = j; 1357 } 1358 } 1359 outText.partialStartOffset = partialStartOffset; 1360 outText.partialEndOffset = partialEndOffset - delta; 1361 1362 if (partialStartOffset > N) { 1363 partialStartOffset = N; 1364 } else if (partialStartOffset < 0) { 1365 partialStartOffset = 0; 1366 } 1367 if (partialEndOffset > N) { 1368 partialEndOffset = N; 1369 } else if (partialEndOffset < 0) { 1370 partialEndOffset = 0; 1371 } 1372 } 1373 if ((request.flags&InputConnection.GET_TEXT_WITH_STYLES) != 0) { 1374 outText.text = content.subSequence(partialStartOffset, 1375 partialEndOffset); 1376 } else { 1377 outText.text = TextUtils.substring(content, partialStartOffset, 1378 partialEndOffset); 1379 } 1380 } else { 1381 outText.partialStartOffset = 0; 1382 outText.partialEndOffset = 0; 1383 outText.text = ""; 1384 } 1385 outText.flags = 0; 1386 if (MetaKeyKeyListener.getMetaState(content, MetaKeyKeyListener.META_SELECTING) != 0) { 1387 outText.flags |= ExtractedText.FLAG_SELECTING; 1388 } 1389 if (mTextView.isSingleLine()) { 1390 outText.flags |= ExtractedText.FLAG_SINGLE_LINE; 1391 } 1392 outText.startOffset = 0; 1393 outText.selectionStart = mTextView.getSelectionStart(); 1394 outText.selectionEnd = mTextView.getSelectionEnd(); 1395 return true; 1396 } 1397 1398 boolean reportExtractedText() { 1399 final Editor.InputMethodState ims = mInputMethodState; 1400 if (ims != null) { 1401 final boolean contentChanged = ims.mContentChanged; 1402 if (contentChanged || ims.mSelectionModeChanged) { 1403 ims.mContentChanged = false; 1404 ims.mSelectionModeChanged = false; 1405 final ExtractedTextRequest req = ims.mExtractedTextRequest; 1406 if (req != null) { 1407 InputMethodManager imm = InputMethodManager.peekInstance(); 1408 if (imm != null) { 1409 if (TextView.DEBUG_EXTRACT) Log.v(TextView.LOG_TAG, 1410 "Retrieving extracted start=" + ims.mChangedStart + 1411 " end=" + ims.mChangedEnd + 1412 " delta=" + ims.mChangedDelta); 1413 if (ims.mChangedStart < 0 && !contentChanged) { 1414 ims.mChangedStart = EXTRACT_NOTHING; 1415 } 1416 if (extractTextInternal(req, ims.mChangedStart, ims.mChangedEnd, 1417 ims.mChangedDelta, ims.mExtractedText)) { 1418 if (TextView.DEBUG_EXTRACT) Log.v(TextView.LOG_TAG, 1419 "Reporting extracted start=" + 1420 ims.mExtractedText.partialStartOffset + 1421 " end=" + ims.mExtractedText.partialEndOffset + 1422 ": " + ims.mExtractedText.text); 1423 1424 imm.updateExtractedText(mTextView, req.token, ims.mExtractedText); 1425 ims.mChangedStart = EXTRACT_UNKNOWN; 1426 ims.mChangedEnd = EXTRACT_UNKNOWN; 1427 ims.mChangedDelta = 0; 1428 ims.mContentChanged = false; 1429 return true; 1430 } 1431 } 1432 } 1433 } 1434 } 1435 return false; 1436 } 1437 1438 private void sendUpdateSelection() { 1439 if (null != mInputMethodState && mInputMethodState.mBatchEditNesting <= 0) { 1440 final InputMethodManager imm = InputMethodManager.peekInstance(); 1441 if (null != imm) { 1442 final int selectionStart = mTextView.getSelectionStart(); 1443 final int selectionEnd = mTextView.getSelectionEnd(); 1444 int candStart = -1; 1445 int candEnd = -1; 1446 if (mTextView.getText() instanceof Spannable) { 1447 final Spannable sp = (Spannable) mTextView.getText(); 1448 candStart = EditableInputConnection.getComposingSpanStart(sp); 1449 candEnd = EditableInputConnection.getComposingSpanEnd(sp); 1450 } 1451 // InputMethodManager#updateSelection skips sending the message if 1452 // none of the parameters have changed since the last time we called it. 1453 imm.updateSelection(mTextView, 1454 selectionStart, selectionEnd, candStart, candEnd); 1455 } 1456 } 1457 } 1458 1459 void onDraw(Canvas canvas, Layout layout, Path highlight, Paint highlightPaint, 1460 int cursorOffsetVertical) { 1461 final int selectionStart = mTextView.getSelectionStart(); 1462 final int selectionEnd = mTextView.getSelectionEnd(); 1463 1464 final InputMethodState ims = mInputMethodState; 1465 if (ims != null && ims.mBatchEditNesting == 0) { 1466 InputMethodManager imm = InputMethodManager.peekInstance(); 1467 if (imm != null) { 1468 if (imm.isActive(mTextView)) { 1469 if (ims.mContentChanged || ims.mSelectionModeChanged) { 1470 // We are in extract mode and the content has changed 1471 // in some way... just report complete new text to the 1472 // input method. 1473 reportExtractedText(); 1474 } 1475 } 1476 } 1477 } 1478 1479 if (mCorrectionHighlighter != null) { 1480 mCorrectionHighlighter.draw(canvas, cursorOffsetVertical); 1481 } 1482 1483 if (highlight != null && selectionStart == selectionEnd && mCursorCount > 0) { 1484 drawCursor(canvas, cursorOffsetVertical); 1485 // Rely on the drawable entirely, do not draw the cursor line. 1486 // Has to be done after the IMM related code above which relies on the highlight. 1487 highlight = null; 1488 } 1489 1490 if (mTextView.canHaveDisplayList() && canvas.isHardwareAccelerated()) { 1491 drawHardwareAccelerated(canvas, layout, highlight, highlightPaint, 1492 cursorOffsetVertical); 1493 } else { 1494 layout.draw(canvas, highlight, highlightPaint, cursorOffsetVertical); 1495 } 1496 } 1497 1498 private void drawHardwareAccelerated(Canvas canvas, Layout layout, Path highlight, 1499 Paint highlightPaint, int cursorOffsetVertical) { 1500 final long lineRange = layout.getLineRangeForDraw(canvas); 1501 int firstLine = TextUtils.unpackRangeStartFromLong(lineRange); 1502 int lastLine = TextUtils.unpackRangeEndFromLong(lineRange); 1503 if (lastLine < 0) return; 1504 1505 layout.drawBackground(canvas, highlight, highlightPaint, cursorOffsetVertical, 1506 firstLine, lastLine); 1507 1508 if (layout instanceof DynamicLayout) { 1509 if (mTextRenderNodes == null) { 1510 mTextRenderNodes = ArrayUtils.emptyArray(TextRenderNode.class); 1511 } 1512 1513 DynamicLayout dynamicLayout = (DynamicLayout) layout; 1514 int[] blockEndLines = dynamicLayout.getBlockEndLines(); 1515 int[] blockIndices = dynamicLayout.getBlockIndices(); 1516 final int numberOfBlocks = dynamicLayout.getNumberOfBlocks(); 1517 final int indexFirstChangedBlock = dynamicLayout.getIndexFirstChangedBlock(); 1518 1519 int endOfPreviousBlock = -1; 1520 int searchStartIndex = 0; 1521 for (int i = 0; i < numberOfBlocks; i++) { 1522 int blockEndLine = blockEndLines[i]; 1523 int blockIndex = blockIndices[i]; 1524 1525 final boolean blockIsInvalid = blockIndex == DynamicLayout.INVALID_BLOCK_INDEX; 1526 if (blockIsInvalid) { 1527 blockIndex = getAvailableDisplayListIndex(blockIndices, numberOfBlocks, 1528 searchStartIndex); 1529 // Note how dynamic layout's internal block indices get updated from Editor 1530 blockIndices[i] = blockIndex; 1531 if (mTextRenderNodes[blockIndex] != null) { 1532 mTextRenderNodes[blockIndex].isDirty = true; 1533 } 1534 searchStartIndex = blockIndex + 1; 1535 } 1536 1537 if (mTextRenderNodes[blockIndex] == null) { 1538 mTextRenderNodes[blockIndex] = 1539 new TextRenderNode("Text " + blockIndex); 1540 } 1541 1542 final boolean blockDisplayListIsInvalid = mTextRenderNodes[blockIndex].needsRecord(); 1543 RenderNode blockDisplayList = mTextRenderNodes[blockIndex].renderNode; 1544 if (i >= indexFirstChangedBlock || blockDisplayListIsInvalid) { 1545 final int blockBeginLine = endOfPreviousBlock + 1; 1546 final int top = layout.getLineTop(blockBeginLine); 1547 final int bottom = layout.getLineBottom(blockEndLine); 1548 int left = 0; 1549 int right = mTextView.getWidth(); 1550 if (mTextView.getHorizontallyScrolling()) { 1551 float min = Float.MAX_VALUE; 1552 float max = Float.MIN_VALUE; 1553 for (int line = blockBeginLine; line <= blockEndLine; line++) { 1554 min = Math.min(min, layout.getLineLeft(line)); 1555 max = Math.max(max, layout.getLineRight(line)); 1556 } 1557 left = (int) min; 1558 right = (int) (max + 0.5f); 1559 } 1560 1561 // Rebuild display list if it is invalid 1562 if (blockDisplayListIsInvalid) { 1563 final DisplayListCanvas displayListCanvas = blockDisplayList.start( 1564 right - left, bottom - top); 1565 try { 1566 // drawText is always relative to TextView's origin, this translation 1567 // brings this range of text back to the top left corner of the viewport 1568 displayListCanvas.translate(-left, -top); 1569 layout.drawText(displayListCanvas, blockBeginLine, blockEndLine); 1570 mTextRenderNodes[blockIndex].isDirty = false; 1571 // No need to untranslate, previous context is popped after 1572 // drawDisplayList 1573 } finally { 1574 blockDisplayList.end(displayListCanvas); 1575 // Same as drawDisplayList below, handled by our TextView's parent 1576 blockDisplayList.setClipToBounds(false); 1577 } 1578 } 1579 1580 // Valid disply list whose index is >= indexFirstChangedBlock 1581 // only needs to update its drawing location. 1582 blockDisplayList.setLeftTopRightBottom(left, top, right, bottom); 1583 } 1584 1585 ((DisplayListCanvas) canvas).drawRenderNode(blockDisplayList); 1586 1587 endOfPreviousBlock = blockEndLine; 1588 } 1589 1590 dynamicLayout.setIndexFirstChangedBlock(numberOfBlocks); 1591 } else { 1592 // Boring layout is used for empty and hint text 1593 layout.drawText(canvas, firstLine, lastLine); 1594 } 1595 } 1596 1597 private int getAvailableDisplayListIndex(int[] blockIndices, int numberOfBlocks, 1598 int searchStartIndex) { 1599 int length = mTextRenderNodes.length; 1600 for (int i = searchStartIndex; i < length; i++) { 1601 boolean blockIndexFound = false; 1602 for (int j = 0; j < numberOfBlocks; j++) { 1603 if (blockIndices[j] == i) { 1604 blockIndexFound = true; 1605 break; 1606 } 1607 } 1608 if (blockIndexFound) continue; 1609 return i; 1610 } 1611 1612 // No available index found, the pool has to grow 1613 mTextRenderNodes = GrowingArrayUtils.append(mTextRenderNodes, length, null); 1614 return length; 1615 } 1616 1617 private void drawCursor(Canvas canvas, int cursorOffsetVertical) { 1618 final boolean translate = cursorOffsetVertical != 0; 1619 if (translate) canvas.translate(0, cursorOffsetVertical); 1620 for (int i = 0; i < mCursorCount; i++) { 1621 mCursorDrawable[i].draw(canvas); 1622 } 1623 if (translate) canvas.translate(0, -cursorOffsetVertical); 1624 } 1625 1626 /** 1627 * Invalidates all the sub-display lists that overlap the specified character range 1628 */ 1629 void invalidateTextDisplayList(Layout layout, int start, int end) { 1630 if (mTextRenderNodes != null && layout instanceof DynamicLayout) { 1631 final int firstLine = layout.getLineForOffset(start); 1632 final int lastLine = layout.getLineForOffset(end); 1633 1634 DynamicLayout dynamicLayout = (DynamicLayout) layout; 1635 int[] blockEndLines = dynamicLayout.getBlockEndLines(); 1636 int[] blockIndices = dynamicLayout.getBlockIndices(); 1637 final int numberOfBlocks = dynamicLayout.getNumberOfBlocks(); 1638 1639 int i = 0; 1640 // Skip the blocks before firstLine 1641 while (i < numberOfBlocks) { 1642 if (blockEndLines[i] >= firstLine) break; 1643 i++; 1644 } 1645 1646 // Invalidate all subsequent blocks until lastLine is passed 1647 while (i < numberOfBlocks) { 1648 final int blockIndex = blockIndices[i]; 1649 if (blockIndex != DynamicLayout.INVALID_BLOCK_INDEX) { 1650 mTextRenderNodes[blockIndex].isDirty = true; 1651 } 1652 if (blockEndLines[i] >= lastLine) break; 1653 i++; 1654 } 1655 } 1656 } 1657 1658 void invalidateTextDisplayList() { 1659 if (mTextRenderNodes != null) { 1660 for (int i = 0; i < mTextRenderNodes.length; i++) { 1661 if (mTextRenderNodes[i] != null) mTextRenderNodes[i].isDirty = true; 1662 } 1663 } 1664 } 1665 1666 void updateCursorsPositions() { 1667 if (mTextView.mCursorDrawableRes == 0) { 1668 mCursorCount = 0; 1669 return; 1670 } 1671 1672 Layout layout = mTextView.getLayout(); 1673 Layout hintLayout = mTextView.getHintLayout(); 1674 final int offset = mTextView.getSelectionStart(); 1675 final int line = layout.getLineForOffset(offset); 1676 final int top = layout.getLineTop(line); 1677 final int bottom = layout.getLineTop(line + 1); 1678 1679 mCursorCount = layout.isLevelBoundary(offset) ? 2 : 1; 1680 1681 int middle = bottom; 1682 if (mCursorCount == 2) { 1683 // Similar to what is done in {@link Layout.#getCursorPath(int, Path, CharSequence)} 1684 middle = (top + bottom) >> 1; 1685 } 1686 1687 boolean clamped = layout.shouldClampCursor(line); 1688 updateCursorPosition(0, top, middle, 1689 getPrimaryHorizontal(layout, hintLayout, offset, clamped)); 1690 1691 if (mCursorCount == 2) { 1692 updateCursorPosition(1, middle, bottom, 1693 layout.getSecondaryHorizontal(offset, clamped)); 1694 } 1695 } 1696 1697 private float getPrimaryHorizontal(Layout layout, Layout hintLayout, int offset, 1698 boolean clamped) { 1699 if (TextUtils.isEmpty(layout.getText()) && 1700 hintLayout != null && 1701 !TextUtils.isEmpty(hintLayout.getText())) { 1702 return hintLayout.getPrimaryHorizontal(offset, clamped); 1703 } else { 1704 return layout.getPrimaryHorizontal(offset, clamped); 1705 } 1706 } 1707 1708 /** 1709 * Start an Insertion action mode. 1710 */ 1711 void startInsertionActionMode() { 1712 if (mInsertionActionModeRunnable != null) { 1713 mTextView.removeCallbacks(mInsertionActionModeRunnable); 1714 } 1715 if (extractedTextModeWillBeStarted()) { 1716 return; 1717 } 1718 stopTextActionMode(); 1719 1720 ActionMode.Callback actionModeCallback = 1721 new TextActionModeCallback(false /* hasSelection */); 1722 mTextActionMode = mTextView.startActionMode( 1723 actionModeCallback, ActionMode.TYPE_FLOATING); 1724 if (mTextActionMode != null && getInsertionController() != null) { 1725 getInsertionController().show(); 1726 } 1727 } 1728 1729 /** 1730 * Starts a Selection Action Mode with the current selection and ensures the selection handles 1731 * are shown if there is a selection, otherwise the insertion handle is shown. This should be 1732 * used when the mode is started from a non-touch event. 1733 * 1734 * @return true if the selection mode was actually started. 1735 */ 1736 boolean startSelectionActionMode() { 1737 boolean selectionStarted = startSelectionActionModeInternal(); 1738 if (selectionStarted) { 1739 getSelectionController().show(); 1740 } else if (getInsertionController() != null) { 1741 getInsertionController().show(); 1742 } 1743 return selectionStarted; 1744 } 1745 1746 /** 1747 * If the TextView allows text selection, selects the current word when no existing selection 1748 * was available and starts a drag. 1749 * 1750 * @return true if the drag was started. 1751 */ 1752 private boolean selectCurrentWordAndStartDrag() { 1753 if (mInsertionActionModeRunnable != null) { 1754 mTextView.removeCallbacks(mInsertionActionModeRunnable); 1755 } 1756 if (extractedTextModeWillBeStarted()) { 1757 return false; 1758 } 1759 if (mTextActionMode != null) { 1760 mTextActionMode.finish(); 1761 } 1762 if (!checkFieldAndSelectCurrentWord()) { 1763 return false; 1764 } 1765 1766 // Avoid dismissing the selection if it exists. 1767 mPreserveDetachedSelection = true; 1768 stopTextActionMode(); 1769 mPreserveDetachedSelection = false; 1770 1771 getSelectionController().enterDrag(); 1772 return true; 1773 } 1774 1775 /** 1776 * Checks whether a selection can be performed on the current TextView and if so selects 1777 * the current word. 1778 * 1779 * @return true if there already was a selection or if the current word was selected. 1780 */ 1781 private boolean checkFieldAndSelectCurrentWord() { 1782 if (!mTextView.canSelectText() || !mTextView.requestFocus()) { 1783 Log.w(TextView.LOG_TAG, 1784 "TextView does not support text selection. Selection cancelled."); 1785 return false; 1786 } 1787 1788 if (!mTextView.hasSelection()) { 1789 // There may already be a selection on device rotation 1790 return selectCurrentWord(); 1791 } 1792 return true; 1793 } 1794 1795 private boolean startSelectionActionModeInternal() { 1796 if (mTextActionMode != null) { 1797 // Text action mode is already started 1798 mTextActionMode.invalidate(); 1799 return false; 1800 } 1801 1802 if (!checkFieldAndSelectCurrentWord()) { 1803 return false; 1804 } 1805 1806 boolean willExtract = extractedTextModeWillBeStarted(); 1807 1808 // Do not start the action mode when extracted text will show up full screen, which would 1809 // immediately hide the newly created action bar and would be visually distracting. 1810 if (!willExtract) { 1811 ActionMode.Callback actionModeCallback = 1812 new TextActionModeCallback(true /* hasSelection */); 1813 mTextActionMode = mTextView.startActionMode( 1814 actionModeCallback, ActionMode.TYPE_FLOATING); 1815 } 1816 1817 final boolean selectionStarted = mTextActionMode != null || willExtract; 1818 if (selectionStarted && !mTextView.isTextSelectable() && mShowSoftInputOnFocus) { 1819 // Show the IME to be able to replace text, except when selecting non editable text. 1820 final InputMethodManager imm = InputMethodManager.peekInstance(); 1821 if (imm != null) { 1822 imm.showSoftInput(mTextView, 0, null); 1823 } 1824 } 1825 return selectionStarted; 1826 } 1827 1828 private boolean extractedTextModeWillBeStarted() { 1829 if (!(mTextView.isInExtractedMode())) { 1830 final InputMethodManager imm = InputMethodManager.peekInstance(); 1831 return imm != null && imm.isFullscreenMode(); 1832 } 1833 return false; 1834 } 1835 1836 /** 1837 * @return <code>true</code> if it's reasonable to offer to show suggestions depending on 1838 * the current cursor position or selection range. This method is consistent with the 1839 * method to show suggestions {@link SuggestionsPopupWindow#updateSuggestions}. 1840 */ 1841 private boolean shouldOfferToShowSuggestions() { 1842 CharSequence text = mTextView.getText(); 1843 if (!(text instanceof Spannable)) return false; 1844 1845 final Spannable spannable = (Spannable) text; 1846 final int selectionStart = mTextView.getSelectionStart(); 1847 final int selectionEnd = mTextView.getSelectionEnd(); 1848 final SuggestionSpan[] suggestionSpans = spannable.getSpans(selectionStart, selectionEnd, 1849 SuggestionSpan.class); 1850 if (suggestionSpans.length == 0) { 1851 return false; 1852 } 1853 if (selectionStart == selectionEnd) { 1854 // Spans overlap the cursor. 1855 for (int i = 0; i < suggestionSpans.length; i++) { 1856 if (suggestionSpans[i].getSuggestions().length > 0) { 1857 return true; 1858 } 1859 } 1860 return false; 1861 } 1862 int minSpanStart = mTextView.getText().length(); 1863 int maxSpanEnd = 0; 1864 int unionOfSpansCoveringSelectionStartStart = mTextView.getText().length(); 1865 int unionOfSpansCoveringSelectionStartEnd = 0; 1866 boolean hasValidSuggestions = false; 1867 for (int i = 0; i < suggestionSpans.length; i++) { 1868 final int spanStart = spannable.getSpanStart(suggestionSpans[i]); 1869 final int spanEnd = spannable.getSpanEnd(suggestionSpans[i]); 1870 minSpanStart = Math.min(minSpanStart, spanStart); 1871 maxSpanEnd = Math.max(maxSpanEnd, spanEnd); 1872 if (selectionStart < spanStart || selectionStart > spanEnd) { 1873 // The span doesn't cover the current selection start point. 1874 continue; 1875 } 1876 hasValidSuggestions = 1877 hasValidSuggestions || suggestionSpans[i].getSuggestions().length > 0; 1878 unionOfSpansCoveringSelectionStartStart = 1879 Math.min(unionOfSpansCoveringSelectionStartStart, spanStart); 1880 unionOfSpansCoveringSelectionStartEnd = 1881 Math.max(unionOfSpansCoveringSelectionStartEnd, spanEnd); 1882 } 1883 if (!hasValidSuggestions) { 1884 return false; 1885 } 1886 if (unionOfSpansCoveringSelectionStartStart >= unionOfSpansCoveringSelectionStartEnd) { 1887 // No spans cover the selection start point. 1888 return false; 1889 } 1890 if (minSpanStart < unionOfSpansCoveringSelectionStartStart 1891 || maxSpanEnd > unionOfSpansCoveringSelectionStartEnd) { 1892 // There is a span that is not covered by the union. In this case, we soouldn't offer 1893 // to show suggestions as it's confusing. 1894 return false; 1895 } 1896 return true; 1897 } 1898 1899 /** 1900 * @return <code>true</code> if the cursor is inside an {@link SuggestionSpan} with 1901 * {@link SuggestionSpan#FLAG_EASY_CORRECT} set. 1902 */ 1903 private boolean isCursorInsideEasyCorrectionSpan() { 1904 Spannable spannable = (Spannable) mTextView.getText(); 1905 SuggestionSpan[] suggestionSpans = spannable.getSpans(mTextView.getSelectionStart(), 1906 mTextView.getSelectionEnd(), SuggestionSpan.class); 1907 for (int i = 0; i < suggestionSpans.length; i++) { 1908 if ((suggestionSpans[i].getFlags() & SuggestionSpan.FLAG_EASY_CORRECT) != 0) { 1909 return true; 1910 } 1911 } 1912 return false; 1913 } 1914 1915 void onTouchUpEvent(MotionEvent event) { 1916 boolean selectAllGotFocus = mSelectAllOnFocus && mTextView.didTouchFocusSelect(); 1917 hideControllers(); 1918 stopTextActionMode(); 1919 CharSequence text = mTextView.getText(); 1920 if (!selectAllGotFocus && text.length() > 0) { 1921 // Move cursor 1922 final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); 1923 Selection.setSelection((Spannable) text, offset); 1924 if (mSpellChecker != null) { 1925 // When the cursor moves, the word that was typed may need spell check 1926 mSpellChecker.onSelectionChanged(); 1927 } 1928 1929 if (!extractedTextModeWillBeStarted()) { 1930 if (isCursorInsideEasyCorrectionSpan()) { 1931 // Cancel the single tap delayed runnable. 1932 if (mInsertionActionModeRunnable != null) { 1933 mTextView.removeCallbacks(mInsertionActionModeRunnable); 1934 } 1935 1936 mShowSuggestionRunnable = new Runnable() { 1937 public void run() { 1938 showSuggestions(); 1939 } 1940 }; 1941 // removeCallbacks is performed on every touch 1942 mTextView.postDelayed(mShowSuggestionRunnable, 1943 ViewConfiguration.getDoubleTapTimeout()); 1944 } else if (hasInsertionController()) { 1945 getInsertionController().show(); 1946 } 1947 } 1948 } 1949 } 1950 1951 protected void stopTextActionMode() { 1952 if (mTextActionMode != null) { 1953 // This will hide the mSelectionModifierCursorController 1954 mTextActionMode.finish(); 1955 } 1956 } 1957 1958 /** 1959 * @return True if this view supports insertion handles. 1960 */ 1961 boolean hasInsertionController() { 1962 return mInsertionControllerEnabled; 1963 } 1964 1965 /** 1966 * @return True if this view supports selection handles. 1967 */ 1968 boolean hasSelectionController() { 1969 return mSelectionControllerEnabled; 1970 } 1971 1972 InsertionPointCursorController getInsertionController() { 1973 if (!mInsertionControllerEnabled) { 1974 return null; 1975 } 1976 1977 if (mInsertionPointCursorController == null) { 1978 mInsertionPointCursorController = new InsertionPointCursorController(); 1979 1980 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 1981 observer.addOnTouchModeChangeListener(mInsertionPointCursorController); 1982 } 1983 1984 return mInsertionPointCursorController; 1985 } 1986 1987 SelectionModifierCursorController getSelectionController() { 1988 if (!mSelectionControllerEnabled) { 1989 return null; 1990 } 1991 1992 if (mSelectionModifierCursorController == null) { 1993 mSelectionModifierCursorController = new SelectionModifierCursorController(); 1994 1995 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 1996 observer.addOnTouchModeChangeListener(mSelectionModifierCursorController); 1997 } 1998 1999 return mSelectionModifierCursorController; 2000 } 2001 2002 private void updateCursorPosition(int cursorIndex, int top, int bottom, float horizontal) { 2003 if (mCursorDrawable[cursorIndex] == null) 2004 mCursorDrawable[cursorIndex] = mTextView.getContext().getDrawable( 2005 mTextView.mCursorDrawableRes); 2006 2007 if (mTempRect == null) mTempRect = new Rect(); 2008 mCursorDrawable[cursorIndex].getPadding(mTempRect); 2009 final int width = mCursorDrawable[cursorIndex].getIntrinsicWidth(); 2010 horizontal = Math.max(0.5f, horizontal - 0.5f); 2011 final int left = (int) (horizontal) - mTempRect.left; 2012 mCursorDrawable[cursorIndex].setBounds(left, top - mTempRect.top, left + width, 2013 bottom + mTempRect.bottom); 2014 } 2015 2016 /** 2017 * Called by the framework in response to a text auto-correction (such as fixing a typo using a 2018 * a dictionary) from the current input method, provided by it calling 2019 * {@link InputConnection#commitCorrection} InputConnection.commitCorrection()}. The default 2020 * implementation flashes the background of the corrected word to provide feedback to the user. 2021 * 2022 * @param info The auto correct info about the text that was corrected. 2023 */ 2024 public void onCommitCorrection(CorrectionInfo info) { 2025 if (mCorrectionHighlighter == null) { 2026 mCorrectionHighlighter = new CorrectionHighlighter(); 2027 } else { 2028 mCorrectionHighlighter.invalidate(false); 2029 } 2030 2031 mCorrectionHighlighter.highlight(info); 2032 } 2033 2034 void showSuggestions() { 2035 if (mSuggestionsPopupWindow == null) { 2036 mSuggestionsPopupWindow = new SuggestionsPopupWindow(); 2037 } 2038 hideControllers(); 2039 stopTextActionMode(); 2040 mSuggestionsPopupWindow.show(); 2041 } 2042 2043 void onScrollChanged() { 2044 if (mPositionListener != null) { 2045 mPositionListener.onScrollChanged(); 2046 } 2047 if (mTextActionMode != null) { 2048 mTextActionMode.invalidateContentRect(); 2049 } 2050 } 2051 2052 /** 2053 * @return True when the TextView isFocused and has a valid zero-length selection (cursor). 2054 */ 2055 private boolean shouldBlink() { 2056 if (!isCursorVisible() || !mTextView.isFocused()) return false; 2057 2058 final int start = mTextView.getSelectionStart(); 2059 if (start < 0) return false; 2060 2061 final int end = mTextView.getSelectionEnd(); 2062 if (end < 0) return false; 2063 2064 return start == end; 2065 } 2066 2067 void makeBlink() { 2068 if (shouldBlink()) { 2069 mShowCursor = SystemClock.uptimeMillis(); 2070 if (mBlink == null) mBlink = new Blink(); 2071 mBlink.removeCallbacks(mBlink); 2072 mBlink.postAtTime(mBlink, mShowCursor + BLINK); 2073 } else { 2074 if (mBlink != null) mBlink.removeCallbacks(mBlink); 2075 } 2076 } 2077 2078 private class Blink extends Handler implements Runnable { 2079 private boolean mCancelled; 2080 2081 public void run() { 2082 if (mCancelled) { 2083 return; 2084 } 2085 2086 removeCallbacks(Blink.this); 2087 2088 if (shouldBlink()) { 2089 if (mTextView.getLayout() != null) { 2090 mTextView.invalidateCursorPath(); 2091 } 2092 2093 postAtTime(this, SystemClock.uptimeMillis() + BLINK); 2094 } 2095 } 2096 2097 void cancel() { 2098 if (!mCancelled) { 2099 removeCallbacks(Blink.this); 2100 mCancelled = true; 2101 } 2102 } 2103 2104 void uncancel() { 2105 mCancelled = false; 2106 } 2107 } 2108 2109 private DragShadowBuilder getTextThumbnailBuilder(CharSequence text) { 2110 TextView shadowView = (TextView) View.inflate(mTextView.getContext(), 2111 com.android.internal.R.layout.text_drag_thumbnail, null); 2112 2113 if (shadowView == null) { 2114 throw new IllegalArgumentException("Unable to inflate text drag thumbnail"); 2115 } 2116 2117 if (text.length() > DRAG_SHADOW_MAX_TEXT_LENGTH) { 2118 text = text.subSequence(0, DRAG_SHADOW_MAX_TEXT_LENGTH); 2119 } 2120 shadowView.setText(text); 2121 shadowView.setTextColor(mTextView.getTextColors()); 2122 2123 shadowView.setTextAppearance(R.styleable.Theme_textAppearanceLarge); 2124 shadowView.setGravity(Gravity.CENTER); 2125 2126 shadowView.setLayoutParams(new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, 2127 ViewGroup.LayoutParams.WRAP_CONTENT)); 2128 2129 final int size = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED); 2130 shadowView.measure(size, size); 2131 2132 shadowView.layout(0, 0, shadowView.getMeasuredWidth(), shadowView.getMeasuredHeight()); 2133 shadowView.invalidate(); 2134 return new DragShadowBuilder(shadowView); 2135 } 2136 2137 private static class DragLocalState { 2138 public TextView sourceTextView; 2139 public int start, end; 2140 2141 public DragLocalState(TextView sourceTextView, int start, int end) { 2142 this.sourceTextView = sourceTextView; 2143 this.start = start; 2144 this.end = end; 2145 } 2146 } 2147 2148 void onDrop(DragEvent event) { 2149 StringBuilder content = new StringBuilder(""); 2150 ClipData clipData = event.getClipData(); 2151 final int itemCount = clipData.getItemCount(); 2152 for (int i=0; i < itemCount; i++) { 2153 Item item = clipData.getItemAt(i); 2154 content.append(item.coerceToStyledText(mTextView.getContext())); 2155 } 2156 2157 final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); 2158 2159 Object localState = event.getLocalState(); 2160 DragLocalState dragLocalState = null; 2161 if (localState instanceof DragLocalState) { 2162 dragLocalState = (DragLocalState) localState; 2163 } 2164 boolean dragDropIntoItself = dragLocalState != null && 2165 dragLocalState.sourceTextView == mTextView; 2166 2167 if (dragDropIntoItself) { 2168 if (offset >= dragLocalState.start && offset < dragLocalState.end) { 2169 // A drop inside the original selection discards the drop. 2170 return; 2171 } 2172 } 2173 2174 final int originalLength = mTextView.getText().length(); 2175 int min = offset; 2176 int max = offset; 2177 2178 Selection.setSelection((Spannable) mTextView.getText(), max); 2179 mTextView.replaceText_internal(min, max, content); 2180 2181 if (dragDropIntoItself) { 2182 int dragSourceStart = dragLocalState.start; 2183 int dragSourceEnd = dragLocalState.end; 2184 if (max <= dragSourceStart) { 2185 // Inserting text before selection has shifted positions 2186 final int shift = mTextView.getText().length() - originalLength; 2187 dragSourceStart += shift; 2188 dragSourceEnd += shift; 2189 } 2190 2191 // Delete original selection 2192 mTextView.deleteText_internal(dragSourceStart, dragSourceEnd); 2193 2194 // Make sure we do not leave two adjacent spaces. 2195 final int prevCharIdx = Math.max(0, dragSourceStart - 1); 2196 final int nextCharIdx = Math.min(mTextView.getText().length(), dragSourceStart + 1); 2197 if (nextCharIdx > prevCharIdx + 1) { 2198 CharSequence t = mTextView.getTransformedText(prevCharIdx, nextCharIdx); 2199 if (Character.isSpaceChar(t.charAt(0)) && Character.isSpaceChar(t.charAt(1))) { 2200 mTextView.deleteText_internal(prevCharIdx, prevCharIdx + 1); 2201 } 2202 } 2203 } 2204 } 2205 2206 public void addSpanWatchers(Spannable text) { 2207 final int textLength = text.length(); 2208 2209 if (mKeyListener != null) { 2210 text.setSpan(mKeyListener, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE); 2211 } 2212 2213 if (mSpanController == null) { 2214 mSpanController = new SpanController(); 2215 } 2216 text.setSpan(mSpanController, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE); 2217 } 2218 2219 /** 2220 * Controls the {@link EasyEditSpan} monitoring when it is added, and when the related 2221 * pop-up should be displayed. 2222 * Also monitors {@link Selection} to call back to the attached input method. 2223 */ 2224 class SpanController implements SpanWatcher { 2225 2226 private static final int DISPLAY_TIMEOUT_MS = 3000; // 3 secs 2227 2228 private EasyEditPopupWindow mPopupWindow; 2229 2230 private Runnable mHidePopup; 2231 2232 // This function is pure but inner classes can't have static functions 2233 private boolean isNonIntermediateSelectionSpan(final Spannable text, 2234 final Object span) { 2235 return (Selection.SELECTION_START == span || Selection.SELECTION_END == span) 2236 && (text.getSpanFlags(span) & Spanned.SPAN_INTERMEDIATE) == 0; 2237 } 2238 2239 @Override 2240 public void onSpanAdded(Spannable text, Object span, int start, int end) { 2241 if (isNonIntermediateSelectionSpan(text, span)) { 2242 sendUpdateSelection(); 2243 } else if (span instanceof EasyEditSpan) { 2244 if (mPopupWindow == null) { 2245 mPopupWindow = new EasyEditPopupWindow(); 2246 mHidePopup = new Runnable() { 2247 @Override 2248 public void run() { 2249 hide(); 2250 } 2251 }; 2252 } 2253 2254 // Make sure there is only at most one EasyEditSpan in the text 2255 if (mPopupWindow.mEasyEditSpan != null) { 2256 mPopupWindow.mEasyEditSpan.setDeleteEnabled(false); 2257 } 2258 2259 mPopupWindow.setEasyEditSpan((EasyEditSpan) span); 2260 mPopupWindow.setOnDeleteListener(new EasyEditDeleteListener() { 2261 @Override 2262 public void onDeleteClick(EasyEditSpan span) { 2263 Editable editable = (Editable) mTextView.getText(); 2264 int start = editable.getSpanStart(span); 2265 int end = editable.getSpanEnd(span); 2266 if (start >= 0 && end >= 0) { 2267 sendEasySpanNotification(EasyEditSpan.TEXT_DELETED, span); 2268 mTextView.deleteText_internal(start, end); 2269 } 2270 editable.removeSpan(span); 2271 } 2272 }); 2273 2274 if (mTextView.getWindowVisibility() != View.VISIBLE) { 2275 // The window is not visible yet, ignore the text change. 2276 return; 2277 } 2278 2279 if (mTextView.getLayout() == null) { 2280 // The view has not been laid out yet, ignore the text change 2281 return; 2282 } 2283 2284 if (extractedTextModeWillBeStarted()) { 2285 // The input is in extract mode. Do not handle the easy edit in 2286 // the original TextView, as the ExtractEditText will do 2287 return; 2288 } 2289 2290 mPopupWindow.show(); 2291 mTextView.removeCallbacks(mHidePopup); 2292 mTextView.postDelayed(mHidePopup, DISPLAY_TIMEOUT_MS); 2293 } 2294 } 2295 2296 @Override 2297 public void onSpanRemoved(Spannable text, Object span, int start, int end) { 2298 if (isNonIntermediateSelectionSpan(text, span)) { 2299 sendUpdateSelection(); 2300 } else if (mPopupWindow != null && span == mPopupWindow.mEasyEditSpan) { 2301 hide(); 2302 } 2303 } 2304 2305 @Override 2306 public void onSpanChanged(Spannable text, Object span, int previousStart, int previousEnd, 2307 int newStart, int newEnd) { 2308 if (isNonIntermediateSelectionSpan(text, span)) { 2309 sendUpdateSelection(); 2310 } else if (mPopupWindow != null && span instanceof EasyEditSpan) { 2311 EasyEditSpan easyEditSpan = (EasyEditSpan) span; 2312 sendEasySpanNotification(EasyEditSpan.TEXT_MODIFIED, easyEditSpan); 2313 text.removeSpan(easyEditSpan); 2314 } 2315 } 2316 2317 public void hide() { 2318 if (mPopupWindow != null) { 2319 mPopupWindow.hide(); 2320 mTextView.removeCallbacks(mHidePopup); 2321 } 2322 } 2323 2324 private void sendEasySpanNotification(int textChangedType, EasyEditSpan span) { 2325 try { 2326 PendingIntent pendingIntent = span.getPendingIntent(); 2327 if (pendingIntent != null) { 2328 Intent intent = new Intent(); 2329 intent.putExtra(EasyEditSpan.EXTRA_TEXT_CHANGED_TYPE, textChangedType); 2330 pendingIntent.send(mTextView.getContext(), 0, intent); 2331 } 2332 } catch (CanceledException e) { 2333 // This should not happen, as we should try to send the intent only once. 2334 Log.w(TAG, "PendingIntent for notification cannot be sent", e); 2335 } 2336 } 2337 } 2338 2339 /** 2340 * Listens for the delete event triggered by {@link EasyEditPopupWindow}. 2341 */ 2342 private interface EasyEditDeleteListener { 2343 2344 /** 2345 * Clicks the delete pop-up. 2346 */ 2347 void onDeleteClick(EasyEditSpan span); 2348 } 2349 2350 /** 2351 * Displays the actions associated to an {@link EasyEditSpan}. The pop-up is controlled 2352 * by {@link SpanController}. 2353 */ 2354 private class EasyEditPopupWindow extends PinnedPopupWindow 2355 implements OnClickListener { 2356 private static final int POPUP_TEXT_LAYOUT = 2357 com.android.internal.R.layout.text_edit_action_popup_text; 2358 private TextView mDeleteTextView; 2359 private EasyEditSpan mEasyEditSpan; 2360 private EasyEditDeleteListener mOnDeleteListener; 2361 2362 @Override 2363 protected void createPopupWindow() { 2364 mPopupWindow = new PopupWindow(mTextView.getContext(), null, 2365 com.android.internal.R.attr.textSelectHandleWindowStyle); 2366 mPopupWindow.setInputMethodMode(PopupWindow.INPUT_METHOD_NOT_NEEDED); 2367 mPopupWindow.setClippingEnabled(true); 2368 } 2369 2370 @Override 2371 protected void initContentView() { 2372 LinearLayout linearLayout = new LinearLayout(mTextView.getContext()); 2373 linearLayout.setOrientation(LinearLayout.HORIZONTAL); 2374 mContentView = linearLayout; 2375 mContentView.setBackgroundResource( 2376 com.android.internal.R.drawable.text_edit_side_paste_window); 2377 2378 LayoutInflater inflater = (LayoutInflater)mTextView.getContext(). 2379 getSystemService(Context.LAYOUT_INFLATER_SERVICE); 2380 2381 LayoutParams wrapContent = new LayoutParams( 2382 ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT); 2383 2384 mDeleteTextView = (TextView) inflater.inflate(POPUP_TEXT_LAYOUT, null); 2385 mDeleteTextView.setLayoutParams(wrapContent); 2386 mDeleteTextView.setText(com.android.internal.R.string.delete); 2387 mDeleteTextView.setOnClickListener(this); 2388 mContentView.addView(mDeleteTextView); 2389 } 2390 2391 public void setEasyEditSpan(EasyEditSpan easyEditSpan) { 2392 mEasyEditSpan = easyEditSpan; 2393 } 2394 2395 private void setOnDeleteListener(EasyEditDeleteListener listener) { 2396 mOnDeleteListener = listener; 2397 } 2398 2399 @Override 2400 public void onClick(View view) { 2401 if (view == mDeleteTextView 2402 && mEasyEditSpan != null && mEasyEditSpan.isDeleteEnabled() 2403 && mOnDeleteListener != null) { 2404 mOnDeleteListener.onDeleteClick(mEasyEditSpan); 2405 } 2406 } 2407 2408 @Override 2409 public void hide() { 2410 if (mEasyEditSpan != null) { 2411 mEasyEditSpan.setDeleteEnabled(false); 2412 } 2413 mOnDeleteListener = null; 2414 super.hide(); 2415 } 2416 2417 @Override 2418 protected int getTextOffset() { 2419 // Place the pop-up at the end of the span 2420 Editable editable = (Editable) mTextView.getText(); 2421 return editable.getSpanEnd(mEasyEditSpan); 2422 } 2423 2424 @Override 2425 protected int getVerticalLocalPosition(int line) { 2426 return mTextView.getLayout().getLineBottom(line); 2427 } 2428 2429 @Override 2430 protected int clipVertically(int positionY) { 2431 // As we display the pop-up below the span, no vertical clipping is required. 2432 return positionY; 2433 } 2434 } 2435 2436 private class PositionListener implements ViewTreeObserver.OnPreDrawListener { 2437 // 3 handles 2438 // 3 ActionPopup [replace, suggestion, easyedit] (suggestionsPopup first hides the others) 2439 // 1 CursorAnchorInfoNotifier 2440 private final int MAXIMUM_NUMBER_OF_LISTENERS = 7; 2441 private TextViewPositionListener[] mPositionListeners = 2442 new TextViewPositionListener[MAXIMUM_NUMBER_OF_LISTENERS]; 2443 private boolean mCanMove[] = new boolean[MAXIMUM_NUMBER_OF_LISTENERS]; 2444 private boolean mPositionHasChanged = true; 2445 // Absolute position of the TextView with respect to its parent window 2446 private int mPositionX, mPositionY; 2447 private int mNumberOfListeners; 2448 private boolean mScrollHasChanged; 2449 final int[] mTempCoords = new int[2]; 2450 2451 public void addSubscriber(TextViewPositionListener positionListener, boolean canMove) { 2452 if (mNumberOfListeners == 0) { 2453 updatePosition(); 2454 ViewTreeObserver vto = mTextView.getViewTreeObserver(); 2455 vto.addOnPreDrawListener(this); 2456 } 2457 2458 int emptySlotIndex = -1; 2459 for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) { 2460 TextViewPositionListener listener = mPositionListeners[i]; 2461 if (listener == positionListener) { 2462 return; 2463 } else if (emptySlotIndex < 0 && listener == null) { 2464 emptySlotIndex = i; 2465 } 2466 } 2467 2468 mPositionListeners[emptySlotIndex] = positionListener; 2469 mCanMove[emptySlotIndex] = canMove; 2470 mNumberOfListeners++; 2471 } 2472 2473 public void removeSubscriber(TextViewPositionListener positionListener) { 2474 for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) { 2475 if (mPositionListeners[i] == positionListener) { 2476 mPositionListeners[i] = null; 2477 mNumberOfListeners--; 2478 break; 2479 } 2480 } 2481 2482 if (mNumberOfListeners == 0) { 2483 ViewTreeObserver vto = mTextView.getViewTreeObserver(); 2484 vto.removeOnPreDrawListener(this); 2485 } 2486 } 2487 2488 public int getPositionX() { 2489 return mPositionX; 2490 } 2491 2492 public int getPositionY() { 2493 return mPositionY; 2494 } 2495 2496 @Override 2497 public boolean onPreDraw() { 2498 updatePosition(); 2499 2500 for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) { 2501 if (mPositionHasChanged || mScrollHasChanged || mCanMove[i]) { 2502 TextViewPositionListener positionListener = mPositionListeners[i]; 2503 if (positionListener != null) { 2504 positionListener.updatePosition(mPositionX, mPositionY, 2505 mPositionHasChanged, mScrollHasChanged); 2506 } 2507 } 2508 } 2509 2510 mScrollHasChanged = false; 2511 return true; 2512 } 2513 2514 private void updatePosition() { 2515 mTextView.getLocationInWindow(mTempCoords); 2516 2517 mPositionHasChanged = mTempCoords[0] != mPositionX || mTempCoords[1] != mPositionY; 2518 2519 mPositionX = mTempCoords[0]; 2520 mPositionY = mTempCoords[1]; 2521 } 2522 2523 public void onScrollChanged() { 2524 mScrollHasChanged = true; 2525 } 2526 } 2527 2528 private abstract class PinnedPopupWindow implements TextViewPositionListener { 2529 protected PopupWindow mPopupWindow; 2530 protected ViewGroup mContentView; 2531 int mPositionX, mPositionY; 2532 2533 protected abstract void createPopupWindow(); 2534 protected abstract void initContentView(); 2535 protected abstract int getTextOffset(); 2536 protected abstract int getVerticalLocalPosition(int line); 2537 protected abstract int clipVertically(int positionY); 2538 2539 public PinnedPopupWindow() { 2540 createPopupWindow(); 2541 2542 mPopupWindow.setWindowLayoutType( 2543 WindowManager.LayoutParams.TYPE_APPLICATION_ABOVE_SUB_PANEL); 2544 mPopupWindow.setWidth(ViewGroup.LayoutParams.WRAP_CONTENT); 2545 mPopupWindow.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT); 2546 2547 initContentView(); 2548 2549 LayoutParams wrapContent = new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, 2550 ViewGroup.LayoutParams.WRAP_CONTENT); 2551 mContentView.setLayoutParams(wrapContent); 2552 2553 mPopupWindow.setContentView(mContentView); 2554 } 2555 2556 public void show() { 2557 getPositionListener().addSubscriber(this, false /* offset is fixed */); 2558 2559 computeLocalPosition(); 2560 2561 final PositionListener positionListener = getPositionListener(); 2562 updatePosition(positionListener.getPositionX(), positionListener.getPositionY()); 2563 } 2564 2565 protected void measureContent() { 2566 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 2567 mContentView.measure( 2568 View.MeasureSpec.makeMeasureSpec(displayMetrics.widthPixels, 2569 View.MeasureSpec.AT_MOST), 2570 View.MeasureSpec.makeMeasureSpec(displayMetrics.heightPixels, 2571 View.MeasureSpec.AT_MOST)); 2572 } 2573 2574 /* The popup window will be horizontally centered on the getTextOffset() and vertically 2575 * positioned according to viewportToContentHorizontalOffset. 2576 * 2577 * This method assumes that mContentView has properly been measured from its content. */ 2578 private void computeLocalPosition() { 2579 measureContent(); 2580 final int width = mContentView.getMeasuredWidth(); 2581 final int offset = getTextOffset(); 2582 mPositionX = (int) (mTextView.getLayout().getPrimaryHorizontal(offset) - width / 2.0f); 2583 mPositionX += mTextView.viewportToContentHorizontalOffset(); 2584 2585 final int line = mTextView.getLayout().getLineForOffset(offset); 2586 mPositionY = getVerticalLocalPosition(line); 2587 mPositionY += mTextView.viewportToContentVerticalOffset(); 2588 } 2589 2590 private void updatePosition(int parentPositionX, int parentPositionY) { 2591 int positionX = parentPositionX + mPositionX; 2592 int positionY = parentPositionY + mPositionY; 2593 2594 positionY = clipVertically(positionY); 2595 2596 // Horizontal clipping 2597 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 2598 final int width = mContentView.getMeasuredWidth(); 2599 positionX = Math.min(displayMetrics.widthPixels - width, positionX); 2600 positionX = Math.max(0, positionX); 2601 2602 if (isShowing()) { 2603 mPopupWindow.update(positionX, positionY, -1, -1); 2604 } else { 2605 mPopupWindow.showAtLocation(mTextView, Gravity.NO_GRAVITY, 2606 positionX, positionY); 2607 } 2608 } 2609 2610 public void hide() { 2611 mPopupWindow.dismiss(); 2612 getPositionListener().removeSubscriber(this); 2613 } 2614 2615 @Override 2616 public void updatePosition(int parentPositionX, int parentPositionY, 2617 boolean parentPositionChanged, boolean parentScrolled) { 2618 // Either parentPositionChanged or parentScrolled is true, check if still visible 2619 if (isShowing() && isOffsetVisible(getTextOffset())) { 2620 if (parentScrolled) computeLocalPosition(); 2621 updatePosition(parentPositionX, parentPositionY); 2622 } else { 2623 hide(); 2624 } 2625 } 2626 2627 public boolean isShowing() { 2628 return mPopupWindow.isShowing(); 2629 } 2630 } 2631 2632 private class SuggestionsPopupWindow extends PinnedPopupWindow implements OnItemClickListener { 2633 private static final int MAX_NUMBER_SUGGESTIONS = SuggestionSpan.SUGGESTIONS_MAX_SIZE; 2634 private static final int ADD_TO_DICTIONARY = -1; 2635 private static final int DELETE_TEXT = -2; 2636 private SuggestionInfo[] mSuggestionInfos; 2637 private int mNumberOfSuggestions; 2638 private boolean mCursorWasVisibleBeforeSuggestions; 2639 private boolean mIsShowingUp = false; 2640 private SuggestionAdapter mSuggestionsAdapter; 2641 private final Comparator<SuggestionSpan> mSuggestionSpanComparator; 2642 private final HashMap<SuggestionSpan, Integer> mSpansLengths; 2643 2644 private class CustomPopupWindow extends PopupWindow { 2645 public CustomPopupWindow(Context context, int defStyleAttr) { 2646 super(context, null, defStyleAttr); 2647 } 2648 2649 @Override 2650 public void dismiss() { 2651 super.dismiss(); 2652 2653 getPositionListener().removeSubscriber(SuggestionsPopupWindow.this); 2654 2655 // Safe cast since show() checks that mTextView.getText() is an Editable 2656 ((Spannable) mTextView.getText()).removeSpan(mSuggestionRangeSpan); 2657 2658 mTextView.setCursorVisible(mCursorWasVisibleBeforeSuggestions); 2659 if (hasInsertionController()) { 2660 getInsertionController().show(); 2661 } 2662 } 2663 } 2664 2665 public SuggestionsPopupWindow() { 2666 mCursorWasVisibleBeforeSuggestions = mCursorVisible; 2667 mSuggestionSpanComparator = new SuggestionSpanComparator(); 2668 mSpansLengths = new HashMap<SuggestionSpan, Integer>(); 2669 } 2670 2671 @Override 2672 protected void createPopupWindow() { 2673 mPopupWindow = new CustomPopupWindow(mTextView.getContext(), 2674 com.android.internal.R.attr.textSuggestionsWindowStyle); 2675 mPopupWindow.setInputMethodMode(PopupWindow.INPUT_METHOD_NOT_NEEDED); 2676 mPopupWindow.setFocusable(true); 2677 mPopupWindow.setClippingEnabled(false); 2678 } 2679 2680 @Override 2681 protected void initContentView() { 2682 ListView listView = new ListView(mTextView.getContext()); 2683 mSuggestionsAdapter = new SuggestionAdapter(); 2684 listView.setAdapter(mSuggestionsAdapter); 2685 listView.setOnItemClickListener(this); 2686 mContentView = listView; 2687 2688 // Inflate the suggestion items once and for all. + 2 for add to dictionary and delete 2689 mSuggestionInfos = new SuggestionInfo[MAX_NUMBER_SUGGESTIONS + 2]; 2690 for (int i = 0; i < mSuggestionInfos.length; i++) { 2691 mSuggestionInfos[i] = new SuggestionInfo(); 2692 } 2693 } 2694 2695 public boolean isShowingUp() { 2696 return mIsShowingUp; 2697 } 2698 2699 public void onParentLostFocus() { 2700 mIsShowingUp = false; 2701 } 2702 2703 private class SuggestionInfo { 2704 int suggestionStart, suggestionEnd; // range of actual suggestion within text 2705 SuggestionSpan suggestionSpan; // the SuggestionSpan that this TextView represents 2706 int suggestionIndex; // the index of this suggestion inside suggestionSpan 2707 SpannableStringBuilder text = new SpannableStringBuilder(); 2708 TextAppearanceSpan highlightSpan = new TextAppearanceSpan(mTextView.getContext(), 2709 android.R.style.TextAppearance_SuggestionHighlight); 2710 } 2711 2712 private class SuggestionAdapter extends BaseAdapter { 2713 private LayoutInflater mInflater = (LayoutInflater) mTextView.getContext(). 2714 getSystemService(Context.LAYOUT_INFLATER_SERVICE); 2715 2716 @Override 2717 public int getCount() { 2718 return mNumberOfSuggestions; 2719 } 2720 2721 @Override 2722 public Object getItem(int position) { 2723 return mSuggestionInfos[position]; 2724 } 2725 2726 @Override 2727 public long getItemId(int position) { 2728 return position; 2729 } 2730 2731 @Override 2732 public View getView(int position, View convertView, ViewGroup parent) { 2733 TextView textView = (TextView) convertView; 2734 2735 if (textView == null) { 2736 textView = (TextView) mInflater.inflate(mTextView.mTextEditSuggestionItemLayout, 2737 parent, false); 2738 } 2739 2740 final SuggestionInfo suggestionInfo = mSuggestionInfos[position]; 2741 textView.setText(suggestionInfo.text); 2742 2743 if (suggestionInfo.suggestionIndex == ADD_TO_DICTIONARY || 2744 suggestionInfo.suggestionIndex == DELETE_TEXT) { 2745 textView.setBackgroundColor(Color.TRANSPARENT); 2746 } else { 2747 textView.setBackgroundColor(Color.WHITE); 2748 } 2749 2750 return textView; 2751 } 2752 } 2753 2754 private class SuggestionSpanComparator implements Comparator<SuggestionSpan> { 2755 public int compare(SuggestionSpan span1, SuggestionSpan span2) { 2756 final int flag1 = span1.getFlags(); 2757 final int flag2 = span2.getFlags(); 2758 if (flag1 != flag2) { 2759 // The order here should match what is used in updateDrawState 2760 final boolean easy1 = (flag1 & SuggestionSpan.FLAG_EASY_CORRECT) != 0; 2761 final boolean easy2 = (flag2 & SuggestionSpan.FLAG_EASY_CORRECT) != 0; 2762 final boolean misspelled1 = (flag1 & SuggestionSpan.FLAG_MISSPELLED) != 0; 2763 final boolean misspelled2 = (flag2 & SuggestionSpan.FLAG_MISSPELLED) != 0; 2764 if (easy1 && !misspelled1) return -1; 2765 if (easy2 && !misspelled2) return 1; 2766 if (misspelled1) return -1; 2767 if (misspelled2) return 1; 2768 } 2769 2770 return mSpansLengths.get(span1).intValue() - mSpansLengths.get(span2).intValue(); 2771 } 2772 } 2773 2774 /** 2775 * Returns the suggestion spans that cover the current cursor position. The suggestion 2776 * spans are sorted according to the length of text that they are attached to. 2777 */ 2778 private SuggestionSpan[] getSuggestionSpans() { 2779 int pos = mTextView.getSelectionStart(); 2780 Spannable spannable = (Spannable) mTextView.getText(); 2781 SuggestionSpan[] suggestionSpans = spannable.getSpans(pos, pos, SuggestionSpan.class); 2782 2783 mSpansLengths.clear(); 2784 for (SuggestionSpan suggestionSpan : suggestionSpans) { 2785 int start = spannable.getSpanStart(suggestionSpan); 2786 int end = spannable.getSpanEnd(suggestionSpan); 2787 mSpansLengths.put(suggestionSpan, Integer.valueOf(end - start)); 2788 } 2789 2790 // The suggestions are sorted according to their types (easy correction first, then 2791 // misspelled) and to the length of the text that they cover (shorter first). 2792 Arrays.sort(suggestionSpans, mSuggestionSpanComparator); 2793 return suggestionSpans; 2794 } 2795 2796 @Override 2797 public void show() { 2798 if (!(mTextView.getText() instanceof Editable)) return; 2799 2800 if (updateSuggestions()) { 2801 mCursorWasVisibleBeforeSuggestions = mCursorVisible; 2802 mTextView.setCursorVisible(false); 2803 mIsShowingUp = true; 2804 super.show(); 2805 } 2806 } 2807 2808 @Override 2809 protected void measureContent() { 2810 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 2811 final int horizontalMeasure = View.MeasureSpec.makeMeasureSpec( 2812 displayMetrics.widthPixels, View.MeasureSpec.AT_MOST); 2813 final int verticalMeasure = View.MeasureSpec.makeMeasureSpec( 2814 displayMetrics.heightPixels, View.MeasureSpec.AT_MOST); 2815 2816 int width = 0; 2817 View view = null; 2818 for (int i = 0; i < mNumberOfSuggestions; i++) { 2819 view = mSuggestionsAdapter.getView(i, view, mContentView); 2820 view.getLayoutParams().width = LayoutParams.WRAP_CONTENT; 2821 view.measure(horizontalMeasure, verticalMeasure); 2822 width = Math.max(width, view.getMeasuredWidth()); 2823 } 2824 2825 // Enforce the width based on actual text widths 2826 mContentView.measure( 2827 View.MeasureSpec.makeMeasureSpec(width, View.MeasureSpec.EXACTLY), 2828 verticalMeasure); 2829 2830 Drawable popupBackground = mPopupWindow.getBackground(); 2831 if (popupBackground != null) { 2832 if (mTempRect == null) mTempRect = new Rect(); 2833 popupBackground.getPadding(mTempRect); 2834 width += mTempRect.left + mTempRect.right; 2835 } 2836 mPopupWindow.setWidth(width); 2837 } 2838 2839 @Override 2840 protected int getTextOffset() { 2841 return mTextView.getSelectionStart(); 2842 } 2843 2844 @Override 2845 protected int getVerticalLocalPosition(int line) { 2846 return mTextView.getLayout().getLineBottom(line); 2847 } 2848 2849 @Override 2850 protected int clipVertically(int positionY) { 2851 final int height = mContentView.getMeasuredHeight(); 2852 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 2853 return Math.min(positionY, displayMetrics.heightPixels - height); 2854 } 2855 2856 @Override 2857 public void hide() { 2858 super.hide(); 2859 } 2860 2861 private boolean updateSuggestions() { 2862 Spannable spannable = (Spannable) mTextView.getText(); 2863 SuggestionSpan[] suggestionSpans = getSuggestionSpans(); 2864 2865 final int nbSpans = suggestionSpans.length; 2866 // Suggestions are shown after a delay: the underlying spans may have been removed 2867 if (nbSpans == 0) return false; 2868 2869 mNumberOfSuggestions = 0; 2870 int spanUnionStart = mTextView.getText().length(); 2871 int spanUnionEnd = 0; 2872 2873 SuggestionSpan misspelledSpan = null; 2874 int underlineColor = 0; 2875 2876 for (int spanIndex = 0; spanIndex < nbSpans; spanIndex++) { 2877 SuggestionSpan suggestionSpan = suggestionSpans[spanIndex]; 2878 final int spanStart = spannable.getSpanStart(suggestionSpan); 2879 final int spanEnd = spannable.getSpanEnd(suggestionSpan); 2880 spanUnionStart = Math.min(spanStart, spanUnionStart); 2881 spanUnionEnd = Math.max(spanEnd, spanUnionEnd); 2882 2883 if ((suggestionSpan.getFlags() & SuggestionSpan.FLAG_MISSPELLED) != 0) { 2884 misspelledSpan = suggestionSpan; 2885 } 2886 2887 // The first span dictates the background color of the highlighted text 2888 if (spanIndex == 0) underlineColor = suggestionSpan.getUnderlineColor(); 2889 2890 String[] suggestions = suggestionSpan.getSuggestions(); 2891 int nbSuggestions = suggestions.length; 2892 for (int suggestionIndex = 0; suggestionIndex < nbSuggestions; suggestionIndex++) { 2893 String suggestion = suggestions[suggestionIndex]; 2894 2895 boolean suggestionIsDuplicate = false; 2896 for (int i = 0; i < mNumberOfSuggestions; i++) { 2897 if (mSuggestionInfos[i].text.toString().equals(suggestion)) { 2898 SuggestionSpan otherSuggestionSpan = mSuggestionInfos[i].suggestionSpan; 2899 final int otherSpanStart = spannable.getSpanStart(otherSuggestionSpan); 2900 final int otherSpanEnd = spannable.getSpanEnd(otherSuggestionSpan); 2901 if (spanStart == otherSpanStart && spanEnd == otherSpanEnd) { 2902 suggestionIsDuplicate = true; 2903 break; 2904 } 2905 } 2906 } 2907 2908 if (!suggestionIsDuplicate) { 2909 SuggestionInfo suggestionInfo = mSuggestionInfos[mNumberOfSuggestions]; 2910 suggestionInfo.suggestionSpan = suggestionSpan; 2911 suggestionInfo.suggestionIndex = suggestionIndex; 2912 suggestionInfo.text.replace(0, suggestionInfo.text.length(), suggestion); 2913 2914 mNumberOfSuggestions++; 2915 2916 if (mNumberOfSuggestions == MAX_NUMBER_SUGGESTIONS) { 2917 // Also end outer for loop 2918 spanIndex = nbSpans; 2919 break; 2920 } 2921 } 2922 } 2923 } 2924 2925 for (int i = 0; i < mNumberOfSuggestions; i++) { 2926 highlightTextDifferences(mSuggestionInfos[i], spanUnionStart, spanUnionEnd); 2927 } 2928 2929 // Add "Add to dictionary" item if there is a span with the misspelled flag 2930 if (misspelledSpan != null) { 2931 final int misspelledStart = spannable.getSpanStart(misspelledSpan); 2932 final int misspelledEnd = spannable.getSpanEnd(misspelledSpan); 2933 if (misspelledStart >= 0 && misspelledEnd > misspelledStart) { 2934 SuggestionInfo suggestionInfo = mSuggestionInfos[mNumberOfSuggestions]; 2935 suggestionInfo.suggestionSpan = misspelledSpan; 2936 suggestionInfo.suggestionIndex = ADD_TO_DICTIONARY; 2937 suggestionInfo.text.replace(0, suggestionInfo.text.length(), mTextView. 2938 getContext().getString(com.android.internal.R.string.addToDictionary)); 2939 suggestionInfo.text.setSpan(suggestionInfo.highlightSpan, 0, 0, 2940 Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 2941 2942 mNumberOfSuggestions++; 2943 } 2944 } 2945 2946 // Delete item 2947 SuggestionInfo suggestionInfo = mSuggestionInfos[mNumberOfSuggestions]; 2948 suggestionInfo.suggestionSpan = null; 2949 suggestionInfo.suggestionIndex = DELETE_TEXT; 2950 suggestionInfo.text.replace(0, suggestionInfo.text.length(), 2951 mTextView.getContext().getString(com.android.internal.R.string.deleteText)); 2952 suggestionInfo.text.setSpan(suggestionInfo.highlightSpan, 0, 0, 2953 Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 2954 mNumberOfSuggestions++; 2955 2956 if (mSuggestionRangeSpan == null) mSuggestionRangeSpan = new SuggestionRangeSpan(); 2957 if (underlineColor == 0) { 2958 // Fallback on the default highlight color when the first span does not provide one 2959 mSuggestionRangeSpan.setBackgroundColor(mTextView.mHighlightColor); 2960 } else { 2961 final float BACKGROUND_TRANSPARENCY = 0.4f; 2962 final int newAlpha = (int) (Color.alpha(underlineColor) * BACKGROUND_TRANSPARENCY); 2963 mSuggestionRangeSpan.setBackgroundColor( 2964 (underlineColor & 0x00FFFFFF) + (newAlpha << 24)); 2965 } 2966 spannable.setSpan(mSuggestionRangeSpan, spanUnionStart, spanUnionEnd, 2967 Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 2968 2969 mSuggestionsAdapter.notifyDataSetChanged(); 2970 return true; 2971 } 2972 2973 private void highlightTextDifferences(SuggestionInfo suggestionInfo, int unionStart, 2974 int unionEnd) { 2975 final Spannable text = (Spannable) mTextView.getText(); 2976 final int spanStart = text.getSpanStart(suggestionInfo.suggestionSpan); 2977 final int spanEnd = text.getSpanEnd(suggestionInfo.suggestionSpan); 2978 2979 // Adjust the start/end of the suggestion span 2980 suggestionInfo.suggestionStart = spanStart - unionStart; 2981 suggestionInfo.suggestionEnd = suggestionInfo.suggestionStart 2982 + suggestionInfo.text.length(); 2983 2984 suggestionInfo.text.setSpan(suggestionInfo.highlightSpan, 0, 2985 suggestionInfo.text.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 2986 2987 // Add the text before and after the span. 2988 final String textAsString = text.toString(); 2989 suggestionInfo.text.insert(0, textAsString.substring(unionStart, spanStart)); 2990 suggestionInfo.text.append(textAsString.substring(spanEnd, unionEnd)); 2991 } 2992 2993 @Override 2994 public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 2995 Editable editable = (Editable) mTextView.getText(); 2996 SuggestionInfo suggestionInfo = mSuggestionInfos[position]; 2997 2998 if (suggestionInfo.suggestionIndex == DELETE_TEXT) { 2999 final int spanUnionStart = editable.getSpanStart(mSuggestionRangeSpan); 3000 int spanUnionEnd = editable.getSpanEnd(mSuggestionRangeSpan); 3001 if (spanUnionStart >= 0 && spanUnionEnd > spanUnionStart) { 3002 // Do not leave two adjacent spaces after deletion, or one at beginning of text 3003 if (spanUnionEnd < editable.length() && 3004 Character.isSpaceChar(editable.charAt(spanUnionEnd)) && 3005 (spanUnionStart == 0 || 3006 Character.isSpaceChar(editable.charAt(spanUnionStart - 1)))) { 3007 spanUnionEnd = spanUnionEnd + 1; 3008 } 3009 mTextView.deleteText_internal(spanUnionStart, spanUnionEnd); 3010 } 3011 hide(); 3012 return; 3013 } 3014 3015 final int spanStart = editable.getSpanStart(suggestionInfo.suggestionSpan); 3016 final int spanEnd = editable.getSpanEnd(suggestionInfo.suggestionSpan); 3017 if (spanStart < 0 || spanEnd <= spanStart) { 3018 // Span has been removed 3019 hide(); 3020 return; 3021 } 3022 3023 final String originalText = editable.toString().substring(spanStart, spanEnd); 3024 3025 if (suggestionInfo.suggestionIndex == ADD_TO_DICTIONARY) { 3026 Intent intent = new Intent(Settings.ACTION_USER_DICTIONARY_INSERT); 3027 intent.putExtra("word", originalText); 3028 intent.putExtra("locale", mTextView.getTextServicesLocale().toString()); 3029 // Put a listener to replace the original text with a word which the user 3030 // modified in a user dictionary dialog. 3031 intent.setFlags(intent.getFlags() | Intent.FLAG_ACTIVITY_NEW_TASK); 3032 mTextView.getContext().startActivity(intent); 3033 // There is no way to know if the word was indeed added. Re-check. 3034 // TODO The ExtractEditText should remove the span in the original text instead 3035 editable.removeSpan(suggestionInfo.suggestionSpan); 3036 Selection.setSelection(editable, spanEnd); 3037 updateSpellCheckSpans(spanStart, spanEnd, false); 3038 } else { 3039 // SuggestionSpans are removed by replace: save them before 3040 SuggestionSpan[] suggestionSpans = editable.getSpans(spanStart, spanEnd, 3041 SuggestionSpan.class); 3042 final int length = suggestionSpans.length; 3043 int[] suggestionSpansStarts = new int[length]; 3044 int[] suggestionSpansEnds = new int[length]; 3045 int[] suggestionSpansFlags = new int[length]; 3046 for (int i = 0; i < length; i++) { 3047 final SuggestionSpan suggestionSpan = suggestionSpans[i]; 3048 suggestionSpansStarts[i] = editable.getSpanStart(suggestionSpan); 3049 suggestionSpansEnds[i] = editable.getSpanEnd(suggestionSpan); 3050 suggestionSpansFlags[i] = editable.getSpanFlags(suggestionSpan); 3051 3052 // Remove potential misspelled flags 3053 int suggestionSpanFlags = suggestionSpan.getFlags(); 3054 if ((suggestionSpanFlags & SuggestionSpan.FLAG_MISSPELLED) > 0) { 3055 suggestionSpanFlags &= ~SuggestionSpan.FLAG_MISSPELLED; 3056 suggestionSpanFlags &= ~SuggestionSpan.FLAG_EASY_CORRECT; 3057 suggestionSpan.setFlags(suggestionSpanFlags); 3058 } 3059 } 3060 3061 final int suggestionStart = suggestionInfo.suggestionStart; 3062 final int suggestionEnd = suggestionInfo.suggestionEnd; 3063 final String suggestion = suggestionInfo.text.subSequence( 3064 suggestionStart, suggestionEnd).toString(); 3065 mTextView.replaceText_internal(spanStart, spanEnd, suggestion); 3066 3067 // Notify source IME of the suggestion pick. Do this before 3068 // swaping texts. 3069 suggestionInfo.suggestionSpan.notifySelection( 3070 mTextView.getContext(), originalText, suggestionInfo.suggestionIndex); 3071 3072 // Swap text content between actual text and Suggestion span 3073 String[] suggestions = suggestionInfo.suggestionSpan.getSuggestions(); 3074 suggestions[suggestionInfo.suggestionIndex] = originalText; 3075 3076 // Restore previous SuggestionSpans 3077 final int lengthDifference = suggestion.length() - (spanEnd - spanStart); 3078 for (int i = 0; i < length; i++) { 3079 // Only spans that include the modified region make sense after replacement 3080 // Spans partially included in the replaced region are removed, there is no 3081 // way to assign them a valid range after replacement 3082 if (suggestionSpansStarts[i] <= spanStart && 3083 suggestionSpansEnds[i] >= spanEnd) { 3084 mTextView.setSpan_internal(suggestionSpans[i], suggestionSpansStarts[i], 3085 suggestionSpansEnds[i] + lengthDifference, suggestionSpansFlags[i]); 3086 } 3087 } 3088 3089 // Move cursor at the end of the replaced word 3090 final int newCursorPosition = spanEnd + lengthDifference; 3091 mTextView.setCursorPosition_internal(newCursorPosition, newCursorPosition); 3092 } 3093 3094 hide(); 3095 } 3096 } 3097 3098 /** 3099 * An ActionMode Callback class that is used to provide actions while in text insertion or 3100 * selection mode. 3101 * 3102 * The default callback provides a subset of Select All, Cut, Copy, Paste, Share and Replace 3103 * actions, depending on which of these this TextView supports and the current selection. 3104 */ 3105 private class TextActionModeCallback extends ActionMode.Callback2 { 3106 private final Path mSelectionPath = new Path(); 3107 private final RectF mSelectionBounds = new RectF(); 3108 private final boolean mHasSelection; 3109 3110 private int mHandleHeight; 3111 3112 public TextActionModeCallback(boolean hasSelection) { 3113 mHasSelection = hasSelection; 3114 if (mHasSelection) { 3115 SelectionModifierCursorController selectionController = getSelectionController(); 3116 if (selectionController.mStartHandle == null) { 3117 // As these are for initializing selectionController, hide() must be called. 3118 selectionController.initDrawables(); 3119 selectionController.initHandles(); 3120 selectionController.hide(); 3121 } 3122 mHandleHeight = Math.max( 3123 mSelectHandleLeft.getMinimumHeight(), 3124 mSelectHandleRight.getMinimumHeight()); 3125 } else { 3126 InsertionPointCursorController insertionController = getInsertionController(); 3127 if (insertionController != null) { 3128 insertionController.getHandle(); 3129 mHandleHeight = mSelectHandleCenter.getMinimumHeight(); 3130 } 3131 } 3132 } 3133 3134 @Override 3135 public boolean onCreateActionMode(ActionMode mode, Menu menu) { 3136 mode.setTitle(null); 3137 mode.setSubtitle(null); 3138 mode.setTitleOptionalHint(true); 3139 populateMenuWithItems(menu); 3140 3141 Callback customCallback = getCustomCallback(); 3142 if (customCallback != null) { 3143 if (!customCallback.onCreateActionMode(mode, menu)) { 3144 // The custom mode can choose to cancel the action mode, dismiss selection. 3145 Selection.setSelection((Spannable) mTextView.getText(), 3146 mTextView.getSelectionEnd()); 3147 return false; 3148 } 3149 } 3150 3151 addIntentMenuItemsForTextProcessing(menu); 3152 3153 if (menu.hasVisibleItems() || mode.getCustomView() != null) { 3154 mTextView.setHasTransientState(true); 3155 return true; 3156 } else { 3157 return false; 3158 } 3159 } 3160 3161 private Callback getCustomCallback() { 3162 return mHasSelection 3163 ? mCustomSelectionActionModeCallback 3164 : mCustomInsertionActionModeCallback; 3165 } 3166 3167 private void populateMenuWithItems(Menu menu) { 3168 if (mTextView.canCut()) { 3169 menu.add(Menu.NONE, TextView.ID_CUT, MENU_ITEM_ORDER_CUT, 3170 com.android.internal.R.string.cut). 3171 setAlphabeticShortcut('x'). 3172 setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS); 3173 } 3174 3175 if (mTextView.canCopy()) { 3176 menu.add(Menu.NONE, TextView.ID_COPY, MENU_ITEM_ORDER_COPY, 3177 com.android.internal.R.string.copy). 3178 setAlphabeticShortcut('c'). 3179 setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS); 3180 } 3181 3182 if (mTextView.canPaste()) { 3183 menu.add(Menu.NONE, TextView.ID_PASTE, MENU_ITEM_ORDER_PASTE, 3184 com.android.internal.R.string.paste). 3185 setAlphabeticShortcut('v'). 3186 setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS); 3187 } 3188 3189 if (mTextView.canShare()) { 3190 menu.add(Menu.NONE, TextView.ID_SHARE, MENU_ITEM_ORDER_SHARE, 3191 com.android.internal.R.string.share). 3192 setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM); 3193 } 3194 3195 updateSelectAllItem(menu); 3196 updateReplaceItem(menu); 3197 } 3198 3199 private void addIntentMenuItemsForTextProcessing(Menu menu) { 3200 if (mTextView.canProcessText()) { 3201 PackageManager packageManager = mTextView.getContext().getPackageManager(); 3202 List<ResolveInfo> supportedActivities = 3203 packageManager.queryIntentActivities(createProcessTextIntent(), 0); 3204 for (int i = 0; i < supportedActivities.size(); ++i) { 3205 ResolveInfo info = supportedActivities.get(i); 3206 menu.add(Menu.NONE, Menu.NONE, 3207 MENU_ITEM_ORDER_PROCESS_TEXT_INTENT_ACTIONS_START + i, 3208 info.loadLabel(packageManager)) 3209 .setIntent(createProcessTextIntentForResolveInfo(info)) 3210 .setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM); 3211 } 3212 } 3213 } 3214 3215 private Intent createProcessTextIntent() { 3216 return new Intent() 3217 .setAction(Intent.ACTION_PROCESS_TEXT) 3218 .setType("text/plain"); 3219 } 3220 3221 private Intent createProcessTextIntentForResolveInfo(ResolveInfo info) { 3222 return createProcessTextIntent() 3223 .putExtra(Intent.EXTRA_PROCESS_TEXT_READONLY, !mTextView.isTextEditable()) 3224 .setClassName(info.activityInfo.packageName, info.activityInfo.name); 3225 } 3226 3227 @Override 3228 public boolean onPrepareActionMode(ActionMode mode, Menu menu) { 3229 updateSelectAllItem(menu); 3230 updateReplaceItem(menu); 3231 3232 Callback customCallback = getCustomCallback(); 3233 if (customCallback != null) { 3234 return customCallback.onPrepareActionMode(mode, menu); 3235 } 3236 return true; 3237 } 3238 3239 private void updateSelectAllItem(Menu menu) { 3240 boolean canSelectAll = mTextView.canSelectAllText(); 3241 boolean selectAllItemExists = menu.findItem(TextView.ID_SELECT_ALL) != null; 3242 if (canSelectAll && !selectAllItemExists) { 3243 menu.add(Menu.NONE, TextView.ID_SELECT_ALL, MENU_ITEM_ORDER_SELECT_ALL, 3244 com.android.internal.R.string.selectAll) 3245 .setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM); 3246 } else if (!canSelectAll && selectAllItemExists) { 3247 menu.removeItem(TextView.ID_SELECT_ALL); 3248 } 3249 } 3250 3251 private void updateReplaceItem(Menu menu) { 3252 boolean canReplace = mTextView.isSuggestionsEnabled() && shouldOfferToShowSuggestions(); 3253 boolean replaceItemExists = menu.findItem(TextView.ID_REPLACE) != null; 3254 if (canReplace && !replaceItemExists) { 3255 menu.add(Menu.NONE, TextView.ID_REPLACE, MENU_ITEM_ORDER_REPLACE, 3256 com.android.internal.R.string.replace) 3257 .setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM); 3258 } else if (!canReplace && replaceItemExists) { 3259 menu.removeItem(TextView.ID_REPLACE); 3260 } 3261 } 3262 3263 @Override 3264 public boolean onActionItemClicked(ActionMode mode, MenuItem item) { 3265 if (item.getIntent() != null 3266 && item.getIntent().getAction().equals(Intent.ACTION_PROCESS_TEXT)) { 3267 item.getIntent().putExtra(Intent.EXTRA_PROCESS_TEXT, mTextView.getSelectedText()); 3268 mPreserveDetachedSelection = true; 3269 mTextView.startActivityForResult( 3270 item.getIntent(), TextView.PROCESS_TEXT_REQUEST_CODE); 3271 return true; 3272 } 3273 Callback customCallback = getCustomCallback(); 3274 if (customCallback != null && customCallback.onActionItemClicked(mode, item)) { 3275 return true; 3276 } 3277 return mTextView.onTextContextMenuItem(item.getItemId()); 3278 } 3279 3280 @Override 3281 public void onDestroyActionMode(ActionMode mode) { 3282 Callback customCallback = getCustomCallback(); 3283 if (customCallback != null) { 3284 customCallback.onDestroyActionMode(mode); 3285 } 3286 3287 /* 3288 * If we're ending this mode because we're detaching from a window, 3289 * we still have selection state to preserve. Don't clear it, we'll 3290 * bring back the selection mode when (if) we get reattached. 3291 */ 3292 if (!mPreserveDetachedSelection) { 3293 Selection.setSelection((Spannable) mTextView.getText(), 3294 mTextView.getSelectionEnd()); 3295 mTextView.setHasTransientState(false); 3296 } 3297 3298 if (mSelectionModifierCursorController != null) { 3299 mSelectionModifierCursorController.hide(); 3300 } 3301 3302 mTextActionMode = null; 3303 } 3304 3305 @Override 3306 public void onGetContentRect(ActionMode mode, View view, Rect outRect) { 3307 if (!view.equals(mTextView) || mTextView.getLayout() == null) { 3308 super.onGetContentRect(mode, view, outRect); 3309 return; 3310 } 3311 if (mTextView.getSelectionStart() != mTextView.getSelectionEnd()) { 3312 // We have a selection. 3313 mSelectionPath.reset(); 3314 mTextView.getLayout().getSelectionPath( 3315 mTextView.getSelectionStart(), mTextView.getSelectionEnd(), mSelectionPath); 3316 mSelectionPath.computeBounds(mSelectionBounds, true); 3317 mSelectionBounds.bottom += mHandleHeight; 3318 } else if (mCursorCount == 2) { 3319 // We have a split cursor. In this case, we take the rectangle that includes both 3320 // parts of the cursor to ensure we don't obscure either of them. 3321 Rect firstCursorBounds = mCursorDrawable[0].getBounds(); 3322 Rect secondCursorBounds = mCursorDrawable[1].getBounds(); 3323 mSelectionBounds.set( 3324 Math.min(firstCursorBounds.left, secondCursorBounds.left), 3325 Math.min(firstCursorBounds.top, secondCursorBounds.top), 3326 Math.max(firstCursorBounds.right, secondCursorBounds.right), 3327 Math.max(firstCursorBounds.bottom, secondCursorBounds.bottom) 3328 + mHandleHeight); 3329 } else { 3330 // We have a single cursor. 3331 int line = mTextView.getLayout().getLineForOffset(mTextView.getSelectionStart()); 3332 float primaryHorizontal = 3333 mTextView.getLayout().getPrimaryHorizontal(mTextView.getSelectionStart()); 3334 mSelectionBounds.set( 3335 primaryHorizontal, 3336 mTextView.getLayout().getLineTop(line), 3337 primaryHorizontal + 1, 3338 mTextView.getLayout().getLineTop(line + 1) + mHandleHeight); 3339 } 3340 // Take TextView's padding and scroll into account. 3341 int textHorizontalOffset = mTextView.viewportToContentHorizontalOffset(); 3342 int textVerticalOffset = mTextView.viewportToContentVerticalOffset(); 3343 outRect.set( 3344 (int) Math.floor(mSelectionBounds.left + textHorizontalOffset), 3345 (int) Math.floor(mSelectionBounds.top + textVerticalOffset), 3346 (int) Math.ceil(mSelectionBounds.right + textHorizontalOffset), 3347 (int) Math.ceil(mSelectionBounds.bottom + textVerticalOffset)); 3348 } 3349 } 3350 3351 /** 3352 * A listener to call {@link InputMethodManager#updateCursorAnchorInfo(View, CursorAnchorInfo)} 3353 * while the input method is requesting the cursor/anchor position. Does nothing as long as 3354 * {@link InputMethodManager#isWatchingCursor(View)} returns false. 3355 */ 3356 private final class CursorAnchorInfoNotifier implements TextViewPositionListener { 3357 final CursorAnchorInfo.Builder mSelectionInfoBuilder = new CursorAnchorInfo.Builder(); 3358 final int[] mTmpIntOffset = new int[2]; 3359 final Matrix mViewToScreenMatrix = new Matrix(); 3360 3361 @Override 3362 public void updatePosition(int parentPositionX, int parentPositionY, 3363 boolean parentPositionChanged, boolean parentScrolled) { 3364 final InputMethodState ims = mInputMethodState; 3365 if (ims == null || ims.mBatchEditNesting > 0) { 3366 return; 3367 } 3368 final InputMethodManager imm = InputMethodManager.peekInstance(); 3369 if (null == imm) { 3370 return; 3371 } 3372 if (!imm.isActive(mTextView)) { 3373 return; 3374 } 3375 // Skip if the IME has not requested the cursor/anchor position. 3376 if (!imm.isCursorAnchorInfoEnabled()) { 3377 return; 3378 } 3379 Layout layout = mTextView.getLayout(); 3380 if (layout == null) { 3381 return; 3382 } 3383 3384 final CursorAnchorInfo.Builder builder = mSelectionInfoBuilder; 3385 builder.reset(); 3386 3387 final int selectionStart = mTextView.getSelectionStart(); 3388 builder.setSelectionRange(selectionStart, mTextView.getSelectionEnd()); 3389 3390 // Construct transformation matrix from view local coordinates to screen coordinates. 3391 mViewToScreenMatrix.set(mTextView.getMatrix()); 3392 mTextView.getLocationOnScreen(mTmpIntOffset); 3393 mViewToScreenMatrix.postTranslate(mTmpIntOffset[0], mTmpIntOffset[1]); 3394 builder.setMatrix(mViewToScreenMatrix); 3395 3396 final float viewportToContentHorizontalOffset = 3397 mTextView.viewportToContentHorizontalOffset(); 3398 final float viewportToContentVerticalOffset = 3399 mTextView.viewportToContentVerticalOffset(); 3400 3401 final CharSequence text = mTextView.getText(); 3402 if (text instanceof Spannable) { 3403 final Spannable sp = (Spannable) text; 3404 int composingTextStart = EditableInputConnection.getComposingSpanStart(sp); 3405 int composingTextEnd = EditableInputConnection.getComposingSpanEnd(sp); 3406 if (composingTextEnd < composingTextStart) { 3407 final int temp = composingTextEnd; 3408 composingTextEnd = composingTextStart; 3409 composingTextStart = temp; 3410 } 3411 final boolean hasComposingText = 3412 (0 <= composingTextStart) && (composingTextStart < composingTextEnd); 3413 if (hasComposingText) { 3414 final CharSequence composingText = text.subSequence(composingTextStart, 3415 composingTextEnd); 3416 builder.setComposingText(composingTextStart, composingText); 3417 3418 final int minLine = layout.getLineForOffset(composingTextStart); 3419 final int maxLine = layout.getLineForOffset(composingTextEnd - 1); 3420 for (int line = minLine; line <= maxLine; ++line) { 3421 final int lineStart = layout.getLineStart(line); 3422 final int lineEnd = layout.getLineEnd(line); 3423 final int offsetStart = Math.max(lineStart, composingTextStart); 3424 final int offsetEnd = Math.min(lineEnd, composingTextEnd); 3425 final boolean ltrLine = 3426 layout.getParagraphDirection(line) == Layout.DIR_LEFT_TO_RIGHT; 3427 final float[] widths = new float[offsetEnd - offsetStart]; 3428 layout.getPaint().getTextWidths(text, offsetStart, offsetEnd, widths); 3429 final float top = layout.getLineTop(line); 3430 final float bottom = layout.getLineBottom(line); 3431 for (int offset = offsetStart; offset < offsetEnd; ++offset) { 3432 final float charWidth = widths[offset - offsetStart]; 3433 final boolean isRtl = layout.isRtlCharAt(offset); 3434 final float primary = layout.getPrimaryHorizontal(offset); 3435 final float secondary = layout.getSecondaryHorizontal(offset); 3436 // TODO: This doesn't work perfectly for text with custom styles and 3437 // TAB chars. 3438 final float left; 3439 final float right; 3440 if (ltrLine) { 3441 if (isRtl) { 3442 left = secondary - charWidth; 3443 right = secondary; 3444 } else { 3445 left = primary; 3446 right = primary + charWidth; 3447 } 3448 } else { 3449 if (!isRtl) { 3450 left = secondary; 3451 right = secondary + charWidth; 3452 } else { 3453 left = primary - charWidth; 3454 right = primary; 3455 } 3456 } 3457 // TODO: Check top-right and bottom-left as well. 3458 final float localLeft = left + viewportToContentHorizontalOffset; 3459 final float localRight = right + viewportToContentHorizontalOffset; 3460 final float localTop = top + viewportToContentVerticalOffset; 3461 final float localBottom = bottom + viewportToContentVerticalOffset; 3462 final boolean isTopLeftVisible = isPositionVisible(localLeft, localTop); 3463 final boolean isBottomRightVisible = 3464 isPositionVisible(localRight, localBottom); 3465 int characterBoundsFlags = 0; 3466 if (isTopLeftVisible || isBottomRightVisible) { 3467 characterBoundsFlags |= CursorAnchorInfo.FLAG_HAS_VISIBLE_REGION; 3468 } 3469 if (!isTopLeftVisible || !isBottomRightVisible) { 3470 characterBoundsFlags |= CursorAnchorInfo.FLAG_HAS_INVISIBLE_REGION; 3471 } 3472 if (isRtl) { 3473 characterBoundsFlags |= CursorAnchorInfo.FLAG_IS_RTL; 3474 } 3475 // Here offset is the index in Java chars. 3476 builder.addCharacterBounds(offset, localLeft, localTop, localRight, 3477 localBottom, characterBoundsFlags); 3478 } 3479 } 3480 } 3481 } 3482 3483 // Treat selectionStart as the insertion point. 3484 if (0 <= selectionStart) { 3485 final int offset = selectionStart; 3486 final int line = layout.getLineForOffset(offset); 3487 final float insertionMarkerX = layout.getPrimaryHorizontal(offset) 3488 + viewportToContentHorizontalOffset; 3489 final float insertionMarkerTop = layout.getLineTop(line) 3490 + viewportToContentVerticalOffset; 3491 final float insertionMarkerBaseline = layout.getLineBaseline(line) 3492 + viewportToContentVerticalOffset; 3493 final float insertionMarkerBottom = layout.getLineBottom(line) 3494 + viewportToContentVerticalOffset; 3495 final boolean isTopVisible = 3496 isPositionVisible(insertionMarkerX, insertionMarkerTop); 3497 final boolean isBottomVisible = 3498 isPositionVisible(insertionMarkerX, insertionMarkerBottom); 3499 int insertionMarkerFlags = 0; 3500 if (isTopVisible || isBottomVisible) { 3501 insertionMarkerFlags |= CursorAnchorInfo.FLAG_HAS_VISIBLE_REGION; 3502 } 3503 if (!isTopVisible || !isBottomVisible) { 3504 insertionMarkerFlags |= CursorAnchorInfo.FLAG_HAS_INVISIBLE_REGION; 3505 } 3506 if (layout.isRtlCharAt(offset)) { 3507 insertionMarkerFlags |= CursorAnchorInfo.FLAG_IS_RTL; 3508 } 3509 builder.setInsertionMarkerLocation(insertionMarkerX, insertionMarkerTop, 3510 insertionMarkerBaseline, insertionMarkerBottom, insertionMarkerFlags); 3511 } 3512 3513 imm.updateCursorAnchorInfo(mTextView, builder.build()); 3514 } 3515 } 3516 3517 private abstract class HandleView extends View implements TextViewPositionListener { 3518 protected Drawable mDrawable; 3519 protected Drawable mDrawableLtr; 3520 protected Drawable mDrawableRtl; 3521 private final PopupWindow mContainer; 3522 // Position with respect to the parent TextView 3523 private int mPositionX, mPositionY; 3524 private boolean mIsDragging; 3525 // Offset from touch position to mPosition 3526 private float mTouchToWindowOffsetX, mTouchToWindowOffsetY; 3527 protected int mHotspotX; 3528 protected int mHorizontalGravity; 3529 // Offsets the hotspot point up, so that cursor is not hidden by the finger when moving up 3530 private float mTouchOffsetY; 3531 // Where the touch position should be on the handle to ensure a maximum cursor visibility 3532 private float mIdealVerticalOffset; 3533 // Parent's (TextView) previous position in window 3534 private int mLastParentX, mLastParentY; 3535 // Previous text character offset 3536 protected int mPreviousOffset = -1; 3537 // Previous text character offset 3538 private boolean mPositionHasChanged = true; 3539 // Minimum touch target size for handles 3540 private int mMinSize; 3541 // Indicates the line of text that the handle is on. 3542 protected int mPrevLine = -1; 3543 3544 public HandleView(Drawable drawableLtr, Drawable drawableRtl) { 3545 super(mTextView.getContext()); 3546 mContainer = new PopupWindow(mTextView.getContext(), null, 3547 com.android.internal.R.attr.textSelectHandleWindowStyle); 3548 mContainer.setSplitTouchEnabled(true); 3549 mContainer.setClippingEnabled(false); 3550 mContainer.setWindowLayoutType(WindowManager.LayoutParams.TYPE_APPLICATION_SUB_PANEL); 3551 mContainer.setWidth(ViewGroup.LayoutParams.WRAP_CONTENT); 3552 mContainer.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT); 3553 mContainer.setContentView(this); 3554 3555 mDrawableLtr = drawableLtr; 3556 mDrawableRtl = drawableRtl; 3557 mMinSize = mTextView.getContext().getResources().getDimensionPixelSize( 3558 com.android.internal.R.dimen.text_handle_min_size); 3559 3560 updateDrawable(); 3561 3562 final int handleHeight = getPreferredHeight(); 3563 mTouchOffsetY = -0.3f * handleHeight; 3564 mIdealVerticalOffset = 0.7f * handleHeight; 3565 } 3566 3567 public float getIdealVerticalOffset() { 3568 return mIdealVerticalOffset; 3569 } 3570 3571 protected void updateDrawable() { 3572 if (mIsDragging) { 3573 // Don't update drawable during dragging. 3574 return; 3575 } 3576 final int offset = getCurrentCursorOffset(); 3577 final boolean isRtlCharAtOffset = mTextView.getLayout().isRtlCharAt(offset); 3578 final Drawable oldDrawable = mDrawable; 3579 mDrawable = isRtlCharAtOffset ? mDrawableRtl : mDrawableLtr; 3580 mHotspotX = getHotspotX(mDrawable, isRtlCharAtOffset); 3581 mHorizontalGravity = getHorizontalGravity(isRtlCharAtOffset); 3582 final Layout layout = mTextView.getLayout(); 3583 if (layout != null && oldDrawable != mDrawable && isShowing()) { 3584 // Update popup window position. 3585 mPositionX = (int) (layout.getPrimaryHorizontal(offset) - 0.5f - mHotspotX - 3586 getHorizontalOffset() + getCursorOffset()); 3587 mPositionX += mTextView.viewportToContentHorizontalOffset(); 3588 mPositionHasChanged = true; 3589 updatePosition(mLastParentX, mLastParentY, false, false); 3590 postInvalidate(); 3591 } 3592 } 3593 3594 protected abstract int getHotspotX(Drawable drawable, boolean isRtlRun); 3595 protected abstract int getHorizontalGravity(boolean isRtlRun); 3596 3597 // Touch-up filter: number of previous positions remembered 3598 private static final int HISTORY_SIZE = 5; 3599 private static final int TOUCH_UP_FILTER_DELAY_AFTER = 150; 3600 private static final int TOUCH_UP_FILTER_DELAY_BEFORE = 350; 3601 private final long[] mPreviousOffsetsTimes = new long[HISTORY_SIZE]; 3602 private final int[] mPreviousOffsets = new int[HISTORY_SIZE]; 3603 private int mPreviousOffsetIndex = 0; 3604 private int mNumberPreviousOffsets = 0; 3605 3606 private void startTouchUpFilter(int offset) { 3607 mNumberPreviousOffsets = 0; 3608 addPositionToTouchUpFilter(offset); 3609 } 3610 3611 private void addPositionToTouchUpFilter(int offset) { 3612 mPreviousOffsetIndex = (mPreviousOffsetIndex + 1) % HISTORY_SIZE; 3613 mPreviousOffsets[mPreviousOffsetIndex] = offset; 3614 mPreviousOffsetsTimes[mPreviousOffsetIndex] = SystemClock.uptimeMillis(); 3615 mNumberPreviousOffsets++; 3616 } 3617 3618 private void filterOnTouchUp() { 3619 final long now = SystemClock.uptimeMillis(); 3620 int i = 0; 3621 int index = mPreviousOffsetIndex; 3622 final int iMax = Math.min(mNumberPreviousOffsets, HISTORY_SIZE); 3623 while (i < iMax && (now - mPreviousOffsetsTimes[index]) < TOUCH_UP_FILTER_DELAY_AFTER) { 3624 i++; 3625 index = (mPreviousOffsetIndex - i + HISTORY_SIZE) % HISTORY_SIZE; 3626 } 3627 3628 if (i > 0 && i < iMax && 3629 (now - mPreviousOffsetsTimes[index]) > TOUCH_UP_FILTER_DELAY_BEFORE) { 3630 positionAtCursorOffset(mPreviousOffsets[index], false); 3631 } 3632 } 3633 3634 public boolean offsetHasBeenChanged() { 3635 return mNumberPreviousOffsets > 1; 3636 } 3637 3638 @Override 3639 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 3640 setMeasuredDimension(getPreferredWidth(), getPreferredHeight()); 3641 } 3642 3643 private int getPreferredWidth() { 3644 return Math.max(mDrawable.getIntrinsicWidth(), mMinSize); 3645 } 3646 3647 private int getPreferredHeight() { 3648 return Math.max(mDrawable.getIntrinsicHeight(), mMinSize); 3649 } 3650 3651 public void show() { 3652 if (isShowing()) return; 3653 3654 getPositionListener().addSubscriber(this, true /* local position may change */); 3655 3656 // Make sure the offset is always considered new, even when focusing at same position 3657 mPreviousOffset = -1; 3658 positionAtCursorOffset(getCurrentCursorOffset(), false); 3659 } 3660 3661 protected void dismiss() { 3662 mIsDragging = false; 3663 mContainer.dismiss(); 3664 onDetached(); 3665 } 3666 3667 public void hide() { 3668 dismiss(); 3669 3670 getPositionListener().removeSubscriber(this); 3671 } 3672 3673 public boolean isShowing() { 3674 return mContainer.isShowing(); 3675 } 3676 3677 private boolean isVisible() { 3678 // Always show a dragging handle. 3679 if (mIsDragging) { 3680 return true; 3681 } 3682 3683 if (mTextView.isInBatchEditMode()) { 3684 return false; 3685 } 3686 3687 return isPositionVisible(mPositionX + mHotspotX + getHorizontalOffset(), mPositionY); 3688 } 3689 3690 public abstract int getCurrentCursorOffset(); 3691 3692 protected abstract void updateSelection(int offset); 3693 3694 public abstract void updatePosition(float x, float y); 3695 3696 protected void positionAtCursorOffset(int offset, boolean parentScrolled) { 3697 // A HandleView relies on the layout, which may be nulled by external methods 3698 Layout layout = mTextView.getLayout(); 3699 if (layout == null) { 3700 // Will update controllers' state, hiding them and stopping selection mode if needed 3701 prepareCursorControllers(); 3702 return; 3703 } 3704 3705 boolean offsetChanged = offset != mPreviousOffset; 3706 if (offsetChanged || parentScrolled) { 3707 if (offsetChanged) { 3708 updateSelection(offset); 3709 addPositionToTouchUpFilter(offset); 3710 } 3711 final int line = layout.getLineForOffset(offset); 3712 mPrevLine = line; 3713 3714 mPositionX = (int) (layout.getPrimaryHorizontal(offset) - 0.5f - mHotspotX - 3715 getHorizontalOffset() + getCursorOffset()); 3716 mPositionY = layout.getLineBottom(line); 3717 3718 // Take TextView's padding and scroll into account. 3719 mPositionX += mTextView.viewportToContentHorizontalOffset(); 3720 mPositionY += mTextView.viewportToContentVerticalOffset(); 3721 3722 mPreviousOffset = offset; 3723 mPositionHasChanged = true; 3724 } 3725 } 3726 3727 public void updatePosition(int parentPositionX, int parentPositionY, 3728 boolean parentPositionChanged, boolean parentScrolled) { 3729 positionAtCursorOffset(getCurrentCursorOffset(), parentScrolled); 3730 if (parentPositionChanged || mPositionHasChanged) { 3731 if (mIsDragging) { 3732 // Update touchToWindow offset in case of parent scrolling while dragging 3733 if (parentPositionX != mLastParentX || parentPositionY != mLastParentY) { 3734 mTouchToWindowOffsetX += parentPositionX - mLastParentX; 3735 mTouchToWindowOffsetY += parentPositionY - mLastParentY; 3736 mLastParentX = parentPositionX; 3737 mLastParentY = parentPositionY; 3738 } 3739 3740 onHandleMoved(); 3741 } 3742 3743 if (isVisible()) { 3744 final int positionX = parentPositionX + mPositionX; 3745 final int positionY = parentPositionY + mPositionY; 3746 if (isShowing()) { 3747 mContainer.update(positionX, positionY, -1, -1); 3748 } else { 3749 mContainer.showAtLocation(mTextView, Gravity.NO_GRAVITY, 3750 positionX, positionY); 3751 } 3752 } else { 3753 if (isShowing()) { 3754 dismiss(); 3755 } 3756 } 3757 3758 mPositionHasChanged = false; 3759 } 3760 } 3761 3762 public void showAtLocation(int offset) { 3763 // TODO - investigate if there's a better way to show the handles 3764 // after the drag accelerator has occured. 3765 int[] tmpCords = new int[2]; 3766 mTextView.getLocationInWindow(tmpCords); 3767 3768 Layout layout = mTextView.getLayout(); 3769 int posX = tmpCords[0]; 3770 int posY = tmpCords[1]; 3771 3772 final int line = layout.getLineForOffset(offset); 3773 3774 int startX = (int) (layout.getPrimaryHorizontal(offset) - 0.5f 3775 - mHotspotX - getHorizontalOffset() + getCursorOffset()); 3776 int startY = layout.getLineBottom(line); 3777 3778 // Take TextView's padding and scroll into account. 3779 startX += mTextView.viewportToContentHorizontalOffset(); 3780 startY += mTextView.viewportToContentVerticalOffset(); 3781 3782 mContainer.showAtLocation(mTextView, Gravity.NO_GRAVITY, 3783 startX + posX, startY + posY); 3784 } 3785 3786 @Override 3787 protected void onDraw(Canvas c) { 3788 final int drawWidth = mDrawable.getIntrinsicWidth(); 3789 final int left = getHorizontalOffset(); 3790 3791 mDrawable.setBounds(left, 0, left + drawWidth, mDrawable.getIntrinsicHeight()); 3792 mDrawable.draw(c); 3793 } 3794 3795 private int getHorizontalOffset() { 3796 final int width = getPreferredWidth(); 3797 final int drawWidth = mDrawable.getIntrinsicWidth(); 3798 final int left; 3799 switch (mHorizontalGravity) { 3800 case Gravity.LEFT: 3801 left = 0; 3802 break; 3803 default: 3804 case Gravity.CENTER: 3805 left = (width - drawWidth) / 2; 3806 break; 3807 case Gravity.RIGHT: 3808 left = width - drawWidth; 3809 break; 3810 } 3811 return left; 3812 } 3813 3814 protected int getCursorOffset() { 3815 return 0; 3816 } 3817 3818 @Override 3819 public boolean onTouchEvent(MotionEvent ev) { 3820 updateFloatingToolbarVisibility(ev); 3821 3822 switch (ev.getActionMasked()) { 3823 case MotionEvent.ACTION_DOWN: { 3824 startTouchUpFilter(getCurrentCursorOffset()); 3825 mTouchToWindowOffsetX = ev.getRawX() - mPositionX; 3826 mTouchToWindowOffsetY = ev.getRawY() - mPositionY; 3827 3828 final PositionListener positionListener = getPositionListener(); 3829 mLastParentX = positionListener.getPositionX(); 3830 mLastParentY = positionListener.getPositionY(); 3831 mIsDragging = true; 3832 break; 3833 } 3834 3835 case MotionEvent.ACTION_MOVE: { 3836 final float rawX = ev.getRawX(); 3837 final float rawY = ev.getRawY(); 3838 3839 // Vertical hysteresis: vertical down movement tends to snap to ideal offset 3840 final float previousVerticalOffset = mTouchToWindowOffsetY - mLastParentY; 3841 final float currentVerticalOffset = rawY - mPositionY - mLastParentY; 3842 float newVerticalOffset; 3843 if (previousVerticalOffset < mIdealVerticalOffset) { 3844 newVerticalOffset = Math.min(currentVerticalOffset, mIdealVerticalOffset); 3845 newVerticalOffset = Math.max(newVerticalOffset, previousVerticalOffset); 3846 } else { 3847 newVerticalOffset = Math.max(currentVerticalOffset, mIdealVerticalOffset); 3848 newVerticalOffset = Math.min(newVerticalOffset, previousVerticalOffset); 3849 } 3850 mTouchToWindowOffsetY = newVerticalOffset + mLastParentY; 3851 3852 final float newPosX = 3853 rawX - mTouchToWindowOffsetX + mHotspotX + getHorizontalOffset(); 3854 final float newPosY = rawY - mTouchToWindowOffsetY + mTouchOffsetY; 3855 3856 updatePosition(newPosX, newPosY); 3857 break; 3858 } 3859 3860 case MotionEvent.ACTION_UP: 3861 filterOnTouchUp(); 3862 mIsDragging = false; 3863 updateDrawable(); 3864 break; 3865 3866 case MotionEvent.ACTION_CANCEL: 3867 mIsDragging = false; 3868 updateDrawable(); 3869 break; 3870 } 3871 return true; 3872 } 3873 3874 public boolean isDragging() { 3875 return mIsDragging; 3876 } 3877 3878 void onHandleMoved() {} 3879 3880 public void onDetached() {} 3881 } 3882 3883 private class InsertionHandleView extends HandleView { 3884 private static final int DELAY_BEFORE_HANDLE_FADES_OUT = 4000; 3885 private static final int RECENT_CUT_COPY_DURATION = 15 * 1000; // seconds 3886 3887 // Used to detect taps on the insertion handle, which will affect the insertion action mode 3888 private float mDownPositionX, mDownPositionY; 3889 private Runnable mHider; 3890 3891 public InsertionHandleView(Drawable drawable) { 3892 super(drawable, drawable); 3893 } 3894 3895 @Override 3896 public void show() { 3897 super.show(); 3898 3899 final long durationSinceCutOrCopy = 3900 SystemClock.uptimeMillis() - TextView.sLastCutCopyOrTextChangedTime; 3901 3902 // Cancel the single tap delayed runnable. 3903 if (mInsertionActionModeRunnable != null 3904 && (mDoubleTap || isCursorInsideEasyCorrectionSpan())) { 3905 mTextView.removeCallbacks(mInsertionActionModeRunnable); 3906 } 3907 3908 // Prepare and schedule the single tap runnable to run exactly after the double tap 3909 // timeout has passed. 3910 if (!mDoubleTap && !isCursorInsideEasyCorrectionSpan() 3911 && (durationSinceCutOrCopy < RECENT_CUT_COPY_DURATION)) { 3912 if (mTextActionMode == null) { 3913 if (mInsertionActionModeRunnable == null) { 3914 mInsertionActionModeRunnable = new Runnable() { 3915 @Override 3916 public void run() { 3917 startInsertionActionMode(); 3918 } 3919 }; 3920 } 3921 mTextView.postDelayed( 3922 mInsertionActionModeRunnable, 3923 ViewConfiguration.getDoubleTapTimeout() + 1); 3924 } 3925 3926 } 3927 3928 hideAfterDelay(); 3929 } 3930 3931 private void hideAfterDelay() { 3932 if (mHider == null) { 3933 mHider = new Runnable() { 3934 public void run() { 3935 hide(); 3936 } 3937 }; 3938 } else { 3939 removeHiderCallback(); 3940 } 3941 mTextView.postDelayed(mHider, DELAY_BEFORE_HANDLE_FADES_OUT); 3942 } 3943 3944 private void removeHiderCallback() { 3945 if (mHider != null) { 3946 mTextView.removeCallbacks(mHider); 3947 } 3948 } 3949 3950 @Override 3951 protected int getHotspotX(Drawable drawable, boolean isRtlRun) { 3952 return drawable.getIntrinsicWidth() / 2; 3953 } 3954 3955 @Override 3956 protected int getHorizontalGravity(boolean isRtlRun) { 3957 return Gravity.CENTER_HORIZONTAL; 3958 } 3959 3960 @Override 3961 protected int getCursorOffset() { 3962 int offset = super.getCursorOffset(); 3963 final Drawable cursor = mCursorCount > 0 ? mCursorDrawable[0] : null; 3964 if (cursor != null) { 3965 cursor.getPadding(mTempRect); 3966 offset += (cursor.getIntrinsicWidth() - mTempRect.left - mTempRect.right) / 2; 3967 } 3968 return offset; 3969 } 3970 3971 @Override 3972 public boolean onTouchEvent(MotionEvent ev) { 3973 final boolean result = super.onTouchEvent(ev); 3974 3975 switch (ev.getActionMasked()) { 3976 case MotionEvent.ACTION_DOWN: 3977 mDownPositionX = ev.getRawX(); 3978 mDownPositionY = ev.getRawY(); 3979 break; 3980 3981 case MotionEvent.ACTION_UP: 3982 if (!offsetHasBeenChanged()) { 3983 final float deltaX = mDownPositionX - ev.getRawX(); 3984 final float deltaY = mDownPositionY - ev.getRawY(); 3985 final float distanceSquared = deltaX * deltaX + deltaY * deltaY; 3986 3987 final ViewConfiguration viewConfiguration = ViewConfiguration.get( 3988 mTextView.getContext()); 3989 final int touchSlop = viewConfiguration.getScaledTouchSlop(); 3990 3991 if (distanceSquared < touchSlop * touchSlop) { 3992 // Tapping on the handle toggles the insertion action mode. 3993 if (mTextActionMode != null) { 3994 mTextActionMode.finish(); 3995 } else { 3996 startInsertionActionMode(); 3997 } 3998 } 3999 } else { 4000 if (mTextActionMode != null) { 4001 mTextActionMode.invalidateContentRect(); 4002 } 4003 } 4004 hideAfterDelay(); 4005 break; 4006 4007 case MotionEvent.ACTION_CANCEL: 4008 hideAfterDelay(); 4009 break; 4010 4011 default: 4012 break; 4013 } 4014 4015 return result; 4016 } 4017 4018 @Override 4019 public int getCurrentCursorOffset() { 4020 return mTextView.getSelectionStart(); 4021 } 4022 4023 @Override 4024 public void updateSelection(int offset) { 4025 Selection.setSelection((Spannable) mTextView.getText(), offset); 4026 } 4027 4028 @Override 4029 public void updatePosition(float x, float y) { 4030 Layout layout = mTextView.getLayout(); 4031 int offset; 4032 if (layout != null) { 4033 int currLine = getCurrentLineAdjustedForSlop(layout, mPrevLine, y); 4034 offset = mTextView.getOffsetAtCoordinate(currLine, x); 4035 } else { 4036 offset = mTextView.getOffsetForPosition(x, y); 4037 } 4038 positionAtCursorOffset(offset, false); 4039 if (mTextActionMode != null) { 4040 mTextActionMode.invalidate(); 4041 } 4042 } 4043 4044 @Override 4045 void onHandleMoved() { 4046 super.onHandleMoved(); 4047 removeHiderCallback(); 4048 } 4049 4050 @Override 4051 public void onDetached() { 4052 super.onDetached(); 4053 removeHiderCallback(); 4054 } 4055 } 4056 4057 private class SelectionStartHandleView extends HandleView { 4058 // Indicates whether the cursor is making adjustments within a word. 4059 private boolean mInWord = false; 4060 // Difference between touch position and word boundary position. 4061 private float mTouchWordDelta; 4062 // X value of the previous updatePosition call. 4063 private float mPrevX; 4064 // Indicates if the handle has moved a boundary between LTR and RTL text. 4065 private boolean mLanguageDirectionChanged = false; 4066 4067 public SelectionStartHandleView(Drawable drawableLtr, Drawable drawableRtl) { 4068 super(drawableLtr, drawableRtl); 4069 } 4070 4071 @Override 4072 protected int getHotspotX(Drawable drawable, boolean isRtlRun) { 4073 if (isRtlRun) { 4074 return drawable.getIntrinsicWidth() / 4; 4075 } else { 4076 return (drawable.getIntrinsicWidth() * 3) / 4; 4077 } 4078 } 4079 4080 @Override 4081 protected int getHorizontalGravity(boolean isRtlRun) { 4082 return isRtlRun ? Gravity.LEFT : Gravity.RIGHT; 4083 } 4084 4085 @Override 4086 public int getCurrentCursorOffset() { 4087 return mTextView.getSelectionStart(); 4088 } 4089 4090 @Override 4091 public void updateSelection(int offset) { 4092 Selection.setSelection((Spannable) mTextView.getText(), offset, 4093 mTextView.getSelectionEnd()); 4094 updateDrawable(); 4095 if (mTextActionMode != null) { 4096 mTextActionMode.invalidate(); 4097 } 4098 } 4099 4100 @Override 4101 public void updatePosition(float x, float y) { 4102 final Layout layout = mTextView.getLayout(); 4103 if (layout == null) { 4104 // HandleView will deal appropriately in positionAtCursorOffset when 4105 // layout is null. 4106 positionAtCursorOffset(mTextView.getOffsetForPosition(x, y), false); 4107 return; 4108 } 4109 4110 boolean positionCursor = false; 4111 final int selectionEnd = mTextView.getSelectionEnd(); 4112 int currLine = getCurrentLineAdjustedForSlop(layout, mPrevLine, y); 4113 int initialOffset = mTextView.getOffsetAtCoordinate(currLine, x); 4114 4115 if (initialOffset >= selectionEnd) { 4116 // Handles have crossed, bound it to the last selected line and 4117 // adjust by word / char as normal. 4118 currLine = layout.getLineForOffset(selectionEnd); 4119 initialOffset = mTextView.getOffsetAtCoordinate(currLine, x); 4120 } 4121 4122 int offset = initialOffset; 4123 int end = getWordEnd(offset); 4124 int start = getWordStart(offset); 4125 4126 if (mPrevX == UNSET_X_VALUE) { 4127 mPrevX = x; 4128 } 4129 4130 final int selectionStart = mTextView.getSelectionStart(); 4131 final boolean selectionStartRtl = layout.isRtlCharAt(selectionStart); 4132 final boolean atRtl = layout.isRtlCharAt(offset); 4133 final boolean isLvlBoundary = layout.isLevelBoundary(offset); 4134 boolean isExpanding; 4135 4136 // We can't determine if the user is expanding or shrinking the selection if they're 4137 // on a bi-di boundary, so until they've moved past the boundary we'll just place 4138 // the cursor at the current position. 4139 if (isLvlBoundary || (selectionStartRtl && !atRtl) || (!selectionStartRtl && atRtl)) { 4140 // We're on a boundary or this is the first direction change -- just update 4141 // to the current position. 4142 mLanguageDirectionChanged = true; 4143 mTouchWordDelta = 0.0f; 4144 positionAtCursorOffset(offset, false); 4145 return; 4146 } else if (mLanguageDirectionChanged && !isLvlBoundary) { 4147 // We've just moved past the boundary so update the position. After this we can 4148 // figure out if the user is expanding or shrinking to go by word or character. 4149 positionAtCursorOffset(offset, false); 4150 mTouchWordDelta = 0.0f; 4151 mLanguageDirectionChanged = false; 4152 return; 4153 } else { 4154 final float xDiff = x - mPrevX; 4155 if (atRtl) { 4156 isExpanding = xDiff > 0 || currLine > mPrevLine; 4157 } else { 4158 isExpanding = xDiff < 0 || currLine < mPrevLine; 4159 } 4160 } 4161 4162 if (isExpanding) { 4163 // User is increasing the selection. 4164 if (!mInWord || currLine < mPrevLine) { 4165 // We're not in a word, or we're on a different line so we'll expand by 4166 // word. First ensure the user has at least entered the next word. 4167 int offsetToWord = Math.min((end - start) / 2, 2); 4168 if (offset <= end - offsetToWord || currLine < mPrevLine) { 4169 offset = start; 4170 } else { 4171 offset = mPreviousOffset; 4172 } 4173 } 4174 if (layout != null && offset < initialOffset) { 4175 final float adjustedX = layout.getPrimaryHorizontal(offset); 4176 mTouchWordDelta = 4177 mTextView.convertToLocalHorizontalCoordinate(x) - adjustedX; 4178 } else { 4179 mTouchWordDelta = 0.0f; 4180 } 4181 positionCursor = true; 4182 } else { 4183 final int adjustedOffset = 4184 mTextView.getOffsetAtCoordinate(currLine, x - mTouchWordDelta); 4185 if (adjustedOffset > mPreviousOffset || currLine > mPrevLine) { 4186 // User is shrinking the selection. 4187 if (currLine > mPrevLine) { 4188 // We're on a different line, so we'll snap to word boundaries. 4189 offset = start; 4190 if (layout != null && offset < initialOffset) { 4191 final float adjustedX = layout.getPrimaryHorizontal(offset); 4192 mTouchWordDelta = 4193 mTextView.convertToLocalHorizontalCoordinate(x) - adjustedX; 4194 } else { 4195 mTouchWordDelta = 0.0f; 4196 } 4197 } else { 4198 offset = adjustedOffset; 4199 } 4200 positionCursor = true; 4201 } else if (adjustedOffset < mPreviousOffset) { 4202 // Handle has jumped to the start of the word, and the user is moving 4203 // their finger towards the handle, the delta should be updated. 4204 mTouchWordDelta = mTextView.convertToLocalHorizontalCoordinate(x) 4205 - layout.getPrimaryHorizontal(mPreviousOffset); 4206 } 4207 } 4208 4209 if (positionCursor) { 4210 // Handles can not cross and selection is at least one character. 4211 if (offset >= selectionEnd) { 4212 offset = getNextCursorOffset(selectionEnd, false); 4213 mTouchWordDelta = 0.0f; 4214 } 4215 positionAtCursorOffset(offset, false); 4216 } 4217 mPrevX = x; 4218 } 4219 4220 @Override 4221 protected void positionAtCursorOffset(int offset, boolean parentScrolled) { 4222 super.positionAtCursorOffset(offset, parentScrolled); 4223 mInWord = !getWordIteratorWithText().isBoundary(offset); 4224 } 4225 4226 @Override 4227 public boolean onTouchEvent(MotionEvent event) { 4228 boolean superResult = super.onTouchEvent(event); 4229 if (event.getActionMasked() == MotionEvent.ACTION_UP) { 4230 // Reset the touch word offset when the user has lifted their finger. 4231 mTouchWordDelta = 0.0f; 4232 mPrevX = UNSET_X_VALUE; 4233 } 4234 return superResult; 4235 } 4236 } 4237 4238 private class SelectionEndHandleView extends HandleView { 4239 // Indicates whether the cursor is making adjustments within a word. 4240 private boolean mInWord = false; 4241 // Difference between touch position and word boundary position. 4242 private float mTouchWordDelta; 4243 // X value of the previous updatePosition call. 4244 private float mPrevX; 4245 // Indicates if the handle has moved a boundary between LTR and RTL text. 4246 private boolean mLanguageDirectionChanged = false; 4247 4248 public SelectionEndHandleView(Drawable drawableLtr, Drawable drawableRtl) { 4249 super(drawableLtr, drawableRtl); 4250 } 4251 4252 @Override 4253 protected int getHotspotX(Drawable drawable, boolean isRtlRun) { 4254 if (isRtlRun) { 4255 return (drawable.getIntrinsicWidth() * 3) / 4; 4256 } else { 4257 return drawable.getIntrinsicWidth() / 4; 4258 } 4259 } 4260 4261 @Override 4262 protected int getHorizontalGravity(boolean isRtlRun) { 4263 return isRtlRun ? Gravity.RIGHT : Gravity.LEFT; 4264 } 4265 4266 @Override 4267 public int getCurrentCursorOffset() { 4268 return mTextView.getSelectionEnd(); 4269 } 4270 4271 @Override 4272 public void updateSelection(int offset) { 4273 Selection.setSelection((Spannable) mTextView.getText(), 4274 mTextView.getSelectionStart(), offset); 4275 if (mTextActionMode != null) { 4276 mTextActionMode.invalidate(); 4277 } 4278 updateDrawable(); 4279 } 4280 4281 @Override 4282 public void updatePosition(float x, float y) { 4283 final Layout layout = mTextView.getLayout(); 4284 if (layout == null) { 4285 // HandleView will deal appropriately in positionAtCursorOffset when 4286 // layout is null. 4287 positionAtCursorOffset(mTextView.getOffsetForPosition(x, y), false); 4288 return; 4289 } 4290 4291 boolean positionCursor = false; 4292 final int selectionStart = mTextView.getSelectionStart(); 4293 int currLine = getCurrentLineAdjustedForSlop(layout, mPrevLine, y); 4294 int initialOffset = mTextView.getOffsetAtCoordinate(currLine, x); 4295 4296 if (initialOffset <= selectionStart) { 4297 // Handles have crossed, bound it to the first selected line and 4298 // adjust by word / char as normal. 4299 currLine = layout.getLineForOffset(selectionStart); 4300 initialOffset = mTextView.getOffsetAtCoordinate(currLine, x); 4301 } 4302 4303 int offset = initialOffset; 4304 int end = getWordEnd(offset); 4305 int start = getWordStart(offset); 4306 4307 if (mPrevX == UNSET_X_VALUE) { 4308 mPrevX = x; 4309 } 4310 4311 final int selectionEnd = mTextView.getSelectionEnd(); 4312 final boolean selectionEndRtl = layout.isRtlCharAt(selectionEnd); 4313 final boolean atRtl = layout.isRtlCharAt(offset); 4314 final boolean isLvlBoundary = layout.isLevelBoundary(offset); 4315 boolean isExpanding; 4316 4317 // We can't determine if the user is expanding or shrinking the selection if they're 4318 // on a bi-di boundary, so until they've moved past the boundary we'll just place 4319 // the cursor at the current position. 4320 if (isLvlBoundary || (selectionEndRtl && !atRtl) || (!selectionEndRtl && atRtl)) { 4321 // We're on a boundary or this is the first direction change -- just update 4322 // to the current position. 4323 mLanguageDirectionChanged = true; 4324 mTouchWordDelta = 0.0f; 4325 positionAtCursorOffset(offset, false); 4326 return; 4327 } else if (mLanguageDirectionChanged && !isLvlBoundary) { 4328 // We've just moved past the boundary so update the position. After this we can 4329 // figure out if the user is expanding or shrinking to go by word or character. 4330 positionAtCursorOffset(offset, false); 4331 mTouchWordDelta = 0.0f; 4332 mLanguageDirectionChanged = false; 4333 return; 4334 } else { 4335 final float xDiff = x - mPrevX; 4336 if (atRtl) { 4337 isExpanding = xDiff < 0 || currLine < mPrevLine; 4338 } else { 4339 isExpanding = xDiff > 0 || currLine > mPrevLine; 4340 } 4341 } 4342 4343 if (isExpanding) { 4344 // User is increasing the selection. 4345 if (!mInWord || currLine > mPrevLine) { 4346 // We're not in a word, or we're on a different line so we'll expand by 4347 // word. First ensure the user has at least entered the next word. 4348 int midPoint = Math.min((end - start) / 2, 2); 4349 if (offset >= start + midPoint || currLine > mPrevLine) { 4350 offset = end; 4351 } else { 4352 offset = mPreviousOffset; 4353 } 4354 } 4355 if (offset > initialOffset) { 4356 final float adjustedX = layout.getPrimaryHorizontal(offset); 4357 mTouchWordDelta = 4358 adjustedX - mTextView.convertToLocalHorizontalCoordinate(x); 4359 } else { 4360 mTouchWordDelta = 0.0f; 4361 } 4362 positionCursor = true; 4363 } else { 4364 final int adjustedOffset = 4365 mTextView.getOffsetAtCoordinate(currLine, x + mTouchWordDelta); 4366 if (adjustedOffset < mPreviousOffset || currLine < mPrevLine) { 4367 // User is shrinking the selection. 4368 if (currLine < mPrevLine) { 4369 // We're on a different line, so we'll snap to word boundaries. 4370 offset = end; 4371 if (offset > initialOffset) { 4372 final float adjustedX = layout.getPrimaryHorizontal(offset); 4373 mTouchWordDelta = 4374 adjustedX - mTextView.convertToLocalHorizontalCoordinate(x); 4375 } else { 4376 mTouchWordDelta = 0.0f; 4377 } 4378 } else { 4379 offset = adjustedOffset; 4380 } 4381 positionCursor = true; 4382 } else if (adjustedOffset > mPreviousOffset) { 4383 // Handle has jumped to the end of the word, and the user is moving 4384 // their finger towards the handle, the delta should be updated. 4385 mTouchWordDelta = layout.getPrimaryHorizontal(mPreviousOffset) 4386 - mTextView.convertToLocalHorizontalCoordinate(x); 4387 } 4388 } 4389 4390 if (positionCursor) { 4391 // Handles can not cross and selection is at least one character. 4392 if (offset <= selectionStart) { 4393 offset = getNextCursorOffset(selectionStart, true); 4394 mTouchWordDelta = 0.0f; 4395 } 4396 positionAtCursorOffset(offset, false); 4397 } 4398 mPrevX = x; 4399 } 4400 4401 @Override 4402 protected void positionAtCursorOffset(int offset, boolean parentScrolled) { 4403 super.positionAtCursorOffset(offset, parentScrolled); 4404 mInWord = !getWordIteratorWithText().isBoundary(offset); 4405 } 4406 4407 @Override 4408 public boolean onTouchEvent(MotionEvent event) { 4409 boolean superResult = super.onTouchEvent(event); 4410 if (event.getActionMasked() == MotionEvent.ACTION_UP) { 4411 // Reset the touch word offset when the user has lifted their finger. 4412 mTouchWordDelta = 0.0f; 4413 mPrevX = UNSET_X_VALUE; 4414 } 4415 return superResult; 4416 } 4417 } 4418 4419 private int getCurrentLineAdjustedForSlop(Layout layout, int prevLine, float y) { 4420 if (layout == null || prevLine > layout.getLineCount() 4421 || layout.getLineCount() <= 0 || prevLine < 0) { 4422 // Invalid parameters, just return whatever line is at y. 4423 return mTextView.getLineAtCoordinate(y); 4424 } 4425 4426 final float verticalOffset = mTextView.viewportToContentVerticalOffset(); 4427 final int lineCount = layout.getLineCount(); 4428 final float slop = mTextView.getLineHeight() * LINE_SLOP_MULTIPLIER_FOR_HANDLEVIEWS; 4429 4430 final float firstLineTop = layout.getLineTop(0) + verticalOffset; 4431 final float prevLineTop = layout.getLineTop(prevLine) + verticalOffset; 4432 final float yTopBound = Math.max(prevLineTop - slop, firstLineTop + slop); 4433 4434 final float lastLineBottom = layout.getLineBottom(lineCount - 1) + verticalOffset; 4435 final float prevLineBottom = layout.getLineBottom(prevLine) + verticalOffset; 4436 final float yBottomBound = Math.min(prevLineBottom + slop, lastLineBottom - slop); 4437 4438 // Determine if we've moved lines based on y position and previous line. 4439 int currLine; 4440 if (y <= yTopBound) { 4441 currLine = Math.max(prevLine - 1, 0); 4442 } else if (y >= yBottomBound) { 4443 currLine = Math.min(prevLine + 1, lineCount - 1); 4444 } else { 4445 currLine = prevLine; 4446 } 4447 return currLine; 4448 } 4449 4450 /** 4451 * A CursorController instance can be used to control a cursor in the text. 4452 */ 4453 private interface CursorController extends ViewTreeObserver.OnTouchModeChangeListener { 4454 /** 4455 * Makes the cursor controller visible on screen. 4456 * See also {@link #hide()}. 4457 */ 4458 public void show(); 4459 4460 /** 4461 * Hide the cursor controller from screen. 4462 * See also {@link #show()}. 4463 */ 4464 public void hide(); 4465 4466 /** 4467 * Called when the view is detached from window. Perform house keeping task, such as 4468 * stopping Runnable thread that would otherwise keep a reference on the context, thus 4469 * preventing the activity from being recycled. 4470 */ 4471 public void onDetached(); 4472 } 4473 4474 private class InsertionPointCursorController implements CursorController { 4475 private InsertionHandleView mHandle; 4476 4477 public void show() { 4478 getHandle().show(); 4479 4480 if (mSelectionModifierCursorController != null) { 4481 mSelectionModifierCursorController.hide(); 4482 } 4483 } 4484 4485 public void hide() { 4486 if (mHandle != null) { 4487 mHandle.hide(); 4488 } 4489 } 4490 4491 public void onTouchModeChanged(boolean isInTouchMode) { 4492 if (!isInTouchMode) { 4493 hide(); 4494 } 4495 } 4496 4497 private InsertionHandleView getHandle() { 4498 if (mSelectHandleCenter == null) { 4499 mSelectHandleCenter = mTextView.getContext().getDrawable( 4500 mTextView.mTextSelectHandleRes); 4501 } 4502 if (mHandle == null) { 4503 mHandle = new InsertionHandleView(mSelectHandleCenter); 4504 } 4505 return mHandle; 4506 } 4507 4508 @Override 4509 public void onDetached() { 4510 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 4511 observer.removeOnTouchModeChangeListener(this); 4512 4513 if (mHandle != null) mHandle.onDetached(); 4514 } 4515 } 4516 4517 class SelectionModifierCursorController implements CursorController { 4518 // The cursor controller handles, lazily created when shown. 4519 private SelectionStartHandleView mStartHandle; 4520 private SelectionEndHandleView mEndHandle; 4521 // The offsets of that last touch down event. Remembered to start selection there. 4522 private int mMinTouchOffset, mMaxTouchOffset; 4523 4524 private float mDownPositionX, mDownPositionY; 4525 private boolean mGestureStayedInTapRegion; 4526 4527 // Where the user first starts the drag motion. 4528 private int mStartOffset = -1; 4529 // Indicates whether the user is selecting text and using the drag accelerator. 4530 private boolean mDragAcceleratorActive; 4531 private boolean mHaventMovedEnoughToStartDrag; 4532 // The line that a selection happened most recently with the drag accelerator. 4533 private int mLineSelectionIsOn = -1; 4534 // Whether the drag accelerator has selected past the initial line. 4535 private boolean mSwitchedLines = false; 4536 4537 SelectionModifierCursorController() { 4538 resetTouchOffsets(); 4539 } 4540 4541 public void show() { 4542 if (mTextView.isInBatchEditMode()) { 4543 return; 4544 } 4545 initDrawables(); 4546 initHandles(); 4547 hideInsertionPointCursorController(); 4548 } 4549 4550 private void initDrawables() { 4551 if (mSelectHandleLeft == null) { 4552 mSelectHandleLeft = mTextView.getContext().getDrawable( 4553 mTextView.mTextSelectHandleLeftRes); 4554 } 4555 if (mSelectHandleRight == null) { 4556 mSelectHandleRight = mTextView.getContext().getDrawable( 4557 mTextView.mTextSelectHandleRightRes); 4558 } 4559 } 4560 4561 private void initHandles() { 4562 // Lazy object creation has to be done before updatePosition() is called. 4563 if (mStartHandle == null) { 4564 mStartHandle = new SelectionStartHandleView(mSelectHandleLeft, mSelectHandleRight); 4565 } 4566 if (mEndHandle == null) { 4567 mEndHandle = new SelectionEndHandleView(mSelectHandleRight, mSelectHandleLeft); 4568 } 4569 4570 mStartHandle.show(); 4571 mEndHandle.show(); 4572 4573 hideInsertionPointCursorController(); 4574 } 4575 4576 public void hide() { 4577 if (mStartHandle != null) mStartHandle.hide(); 4578 if (mEndHandle != null) mEndHandle.hide(); 4579 } 4580 4581 public void enterDrag() { 4582 // Just need to init the handles / hide insertion cursor. 4583 show(); 4584 mDragAcceleratorActive = true; 4585 // Start location of selection. 4586 mStartOffset = mTextView.getOffsetForPosition(mLastDownPositionX, 4587 mLastDownPositionY); 4588 mLineSelectionIsOn = mTextView.getLineAtCoordinate(mLastDownPositionY); 4589 // Don't show the handles until user has lifted finger. 4590 hide(); 4591 4592 // This stops scrolling parents from intercepting the touch event, allowing 4593 // the user to continue dragging across the screen to select text; TextView will 4594 // scroll as necessary. 4595 mTextView.getParent().requestDisallowInterceptTouchEvent(true); 4596 } 4597 4598 public void onTouchEvent(MotionEvent event) { 4599 // This is done even when the View does not have focus, so that long presses can start 4600 // selection and tap can move cursor from this tap position. 4601 final float eventX = event.getX(); 4602 final float eventY = event.getY(); 4603 switch (event.getActionMasked()) { 4604 case MotionEvent.ACTION_DOWN: 4605 4606 // Remember finger down position, to be able to start selection from there. 4607 mMinTouchOffset = mMaxTouchOffset = mTextView.getOffsetForPosition( 4608 eventX, eventY); 4609 4610 // Double tap detection 4611 if (mGestureStayedInTapRegion) { 4612 if (mDoubleTap) { 4613 final float deltaX = eventX - mDownPositionX; 4614 final float deltaY = eventY - mDownPositionY; 4615 final float distanceSquared = deltaX * deltaX + deltaY * deltaY; 4616 4617 ViewConfiguration viewConfiguration = ViewConfiguration.get( 4618 mTextView.getContext()); 4619 int doubleTapSlop = viewConfiguration.getScaledDoubleTapSlop(); 4620 boolean stayedInArea = distanceSquared < doubleTapSlop * doubleTapSlop; 4621 4622 if (stayedInArea && isPositionOnText(eventX, eventY)) { 4623 selectCurrentWordAndStartDrag(); 4624 mDiscardNextActionUp = true; 4625 } 4626 } 4627 } 4628 4629 mDownPositionX = eventX; 4630 mDownPositionY = eventY; 4631 mGestureStayedInTapRegion = true; 4632 mHaventMovedEnoughToStartDrag = true; 4633 break; 4634 4635 case MotionEvent.ACTION_POINTER_DOWN: 4636 case MotionEvent.ACTION_POINTER_UP: 4637 // Handle multi-point gestures. Keep min and max offset positions. 4638 // Only activated for devices that correctly handle multi-touch. 4639 if (mTextView.getContext().getPackageManager().hasSystemFeature( 4640 PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH_DISTINCT)) { 4641 updateMinAndMaxOffsets(event); 4642 } 4643 break; 4644 4645 case MotionEvent.ACTION_MOVE: 4646 final ViewConfiguration viewConfig = ViewConfiguration.get( 4647 mTextView.getContext()); 4648 final int touchSlop = viewConfig.getScaledTouchSlop(); 4649 4650 if (mGestureStayedInTapRegion || mHaventMovedEnoughToStartDrag) { 4651 final float deltaX = eventX - mDownPositionX; 4652 final float deltaY = eventY - mDownPositionY; 4653 final float distanceSquared = deltaX * deltaX + deltaY * deltaY; 4654 4655 if (mGestureStayedInTapRegion) { 4656 int doubleTapTouchSlop = viewConfig.getScaledDoubleTapTouchSlop(); 4657 mGestureStayedInTapRegion = 4658 distanceSquared <= doubleTapTouchSlop * doubleTapTouchSlop; 4659 } 4660 if (mHaventMovedEnoughToStartDrag) { 4661 // We don't start dragging until the user has moved enough. 4662 mHaventMovedEnoughToStartDrag = 4663 distanceSquared <= touchSlop * touchSlop; 4664 } 4665 } 4666 4667 if (mStartHandle != null && mStartHandle.isShowing()) { 4668 // Don't do the drag if the handles are showing already. 4669 break; 4670 } 4671 4672 if (mStartOffset != -1 && mTextView.getLayout() != null) { 4673 if (!mHaventMovedEnoughToStartDrag) { 4674 4675 float y = eventY; 4676 if (mSwitchedLines) { 4677 // Offset the finger by the same vertical offset as the handles. 4678 // This improves visibility of the content being selected by 4679 // shifting the finger below the content, this is applied once 4680 // the user has switched lines. 4681 final float fingerOffset = (mStartHandle != null) 4682 ? mStartHandle.getIdealVerticalOffset() 4683 : touchSlop; 4684 y = eventY - fingerOffset; 4685 } 4686 4687 final int currLine = getCurrentLineAdjustedForSlop( 4688 mTextView.getLayout(), 4689 mLineSelectionIsOn, y); 4690 if (!mSwitchedLines && currLine != mLineSelectionIsOn) { 4691 // Break early here, we want to offset the finger position from 4692 // the selection highlight, once the user moved their finger 4693 // to a different line we should apply the offset and *not* switch 4694 // lines until recomputing the position with the finger offset. 4695 mSwitchedLines = true; 4696 break; 4697 } 4698 4699 int startOffset; 4700 int offset = mTextView.getOffsetAtCoordinate(currLine, eventX); 4701 // Snap to word boundaries. 4702 if (mStartOffset < offset) { 4703 // Expanding with end handle. 4704 offset = getWordEnd(offset); 4705 startOffset = getWordStart(mStartOffset); 4706 } else { 4707 // Expanding with start handle. 4708 offset = getWordStart(offset); 4709 startOffset = getWordEnd(mStartOffset); 4710 } 4711 mLineSelectionIsOn = currLine; 4712 Selection.setSelection((Spannable) mTextView.getText(), 4713 startOffset, offset); 4714 } 4715 } 4716 break; 4717 4718 case MotionEvent.ACTION_UP: 4719 if (mDragAcceleratorActive) { 4720 // No longer dragging to select text, let the parent intercept events. 4721 mTextView.getParent().requestDisallowInterceptTouchEvent(false); 4722 4723 show(); 4724 int startOffset = mTextView.getSelectionStart(); 4725 int endOffset = mTextView.getSelectionEnd(); 4726 4727 // Since we don't let drag handles pass once they're visible, we need to 4728 // make sure the start / end locations are correct because the user *can* 4729 // switch directions during the initial drag. 4730 if (endOffset < startOffset) { 4731 int tmp = endOffset; 4732 endOffset = startOffset; 4733 startOffset = tmp; 4734 4735 // Also update the selection with the right offsets in this case. 4736 Selection.setSelection((Spannable) mTextView.getText(), 4737 startOffset, endOffset); 4738 } 4739 4740 // Need to do this to display the handles. 4741 mStartHandle.showAtLocation(startOffset); 4742 mEndHandle.showAtLocation(endOffset); 4743 4744 // No longer the first dragging motion, reset. 4745 if (!(mTextView.isInExtractedMode())) { 4746 startSelectionActionMode(); 4747 } 4748 mDragAcceleratorActive = false; 4749 mStartOffset = -1; 4750 mSwitchedLines = false; 4751 } 4752 break; 4753 } 4754 } 4755 4756 /** 4757 * @param event 4758 */ 4759 private void updateMinAndMaxOffsets(MotionEvent event) { 4760 int pointerCount = event.getPointerCount(); 4761 for (int index = 0; index < pointerCount; index++) { 4762 int offset = mTextView.getOffsetForPosition(event.getX(index), event.getY(index)); 4763 if (offset < mMinTouchOffset) mMinTouchOffset = offset; 4764 if (offset > mMaxTouchOffset) mMaxTouchOffset = offset; 4765 } 4766 } 4767 4768 public int getMinTouchOffset() { 4769 return mMinTouchOffset; 4770 } 4771 4772 public int getMaxTouchOffset() { 4773 return mMaxTouchOffset; 4774 } 4775 4776 public void resetTouchOffsets() { 4777 mMinTouchOffset = mMaxTouchOffset = -1; 4778 mStartOffset = -1; 4779 mDragAcceleratorActive = false; 4780 mSwitchedLines = false; 4781 } 4782 4783 /** 4784 * @return true iff this controller is currently used to move the selection start. 4785 */ 4786 public boolean isSelectionStartDragged() { 4787 return mStartHandle != null && mStartHandle.isDragging(); 4788 } 4789 4790 /** 4791 * @return true if the user is selecting text using the drag accelerator. 4792 */ 4793 public boolean isDragAcceleratorActive() { 4794 return mDragAcceleratorActive; 4795 } 4796 4797 public void onTouchModeChanged(boolean isInTouchMode) { 4798 if (!isInTouchMode) { 4799 hide(); 4800 } 4801 } 4802 4803 @Override 4804 public void onDetached() { 4805 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 4806 observer.removeOnTouchModeChangeListener(this); 4807 4808 if (mStartHandle != null) mStartHandle.onDetached(); 4809 if (mEndHandle != null) mEndHandle.onDetached(); 4810 } 4811 } 4812 4813 private class CorrectionHighlighter { 4814 private final Path mPath = new Path(); 4815 private final Paint mPaint = new Paint(Paint.ANTI_ALIAS_FLAG); 4816 private int mStart, mEnd; 4817 private long mFadingStartTime; 4818 private RectF mTempRectF; 4819 private final static int FADE_OUT_DURATION = 400; 4820 4821 public CorrectionHighlighter() { 4822 mPaint.setCompatibilityScaling(mTextView.getResources().getCompatibilityInfo(). 4823 applicationScale); 4824 mPaint.setStyle(Paint.Style.FILL); 4825 } 4826 4827 public void highlight(CorrectionInfo info) { 4828 mStart = info.getOffset(); 4829 mEnd = mStart + info.getNewText().length(); 4830 mFadingStartTime = SystemClock.uptimeMillis(); 4831 4832 if (mStart < 0 || mEnd < 0) { 4833 stopAnimation(); 4834 } 4835 } 4836 4837 public void draw(Canvas canvas, int cursorOffsetVertical) { 4838 if (updatePath() && updatePaint()) { 4839 if (cursorOffsetVertical != 0) { 4840 canvas.translate(0, cursorOffsetVertical); 4841 } 4842 4843 canvas.drawPath(mPath, mPaint); 4844 4845 if (cursorOffsetVertical != 0) { 4846 canvas.translate(0, -cursorOffsetVertical); 4847 } 4848 invalidate(true); // TODO invalidate cursor region only 4849 } else { 4850 stopAnimation(); 4851 invalidate(false); // TODO invalidate cursor region only 4852 } 4853 } 4854 4855 private boolean updatePaint() { 4856 final long duration = SystemClock.uptimeMillis() - mFadingStartTime; 4857 if (duration > FADE_OUT_DURATION) return false; 4858 4859 final float coef = 1.0f - (float) duration / FADE_OUT_DURATION; 4860 final int highlightColorAlpha = Color.alpha(mTextView.mHighlightColor); 4861 final int color = (mTextView.mHighlightColor & 0x00FFFFFF) + 4862 ((int) (highlightColorAlpha * coef) << 24); 4863 mPaint.setColor(color); 4864 return true; 4865 } 4866 4867 private boolean updatePath() { 4868 final Layout layout = mTextView.getLayout(); 4869 if (layout == null) return false; 4870 4871 // Update in case text is edited while the animation is run 4872 final int length = mTextView.getText().length(); 4873 int start = Math.min(length, mStart); 4874 int end = Math.min(length, mEnd); 4875 4876 mPath.reset(); 4877 layout.getSelectionPath(start, end, mPath); 4878 return true; 4879 } 4880 4881 private void invalidate(boolean delayed) { 4882 if (mTextView.getLayout() == null) return; 4883 4884 if (mTempRectF == null) mTempRectF = new RectF(); 4885 mPath.computeBounds(mTempRectF, false); 4886 4887 int left = mTextView.getCompoundPaddingLeft(); 4888 int top = mTextView.getExtendedPaddingTop() + mTextView.getVerticalOffset(true); 4889 4890 if (delayed) { 4891 mTextView.postInvalidateOnAnimation( 4892 left + (int) mTempRectF.left, top + (int) mTempRectF.top, 4893 left + (int) mTempRectF.right, top + (int) mTempRectF.bottom); 4894 } else { 4895 mTextView.postInvalidate((int) mTempRectF.left, (int) mTempRectF.top, 4896 (int) mTempRectF.right, (int) mTempRectF.bottom); 4897 } 4898 } 4899 4900 private void stopAnimation() { 4901 Editor.this.mCorrectionHighlighter = null; 4902 } 4903 } 4904 4905 private static class ErrorPopup extends PopupWindow { 4906 private boolean mAbove = false; 4907 private final TextView mView; 4908 private int mPopupInlineErrorBackgroundId = 0; 4909 private int mPopupInlineErrorAboveBackgroundId = 0; 4910 4911 ErrorPopup(TextView v, int width, int height) { 4912 super(v, width, height); 4913 mView = v; 4914 // Make sure the TextView has a background set as it will be used the first time it is 4915 // shown and positioned. Initialized with below background, which should have 4916 // dimensions identical to the above version for this to work (and is more likely). 4917 mPopupInlineErrorBackgroundId = getResourceId(mPopupInlineErrorBackgroundId, 4918 com.android.internal.R.styleable.Theme_errorMessageBackground); 4919 mView.setBackgroundResource(mPopupInlineErrorBackgroundId); 4920 } 4921 4922 void fixDirection(boolean above) { 4923 mAbove = above; 4924 4925 if (above) { 4926 mPopupInlineErrorAboveBackgroundId = 4927 getResourceId(mPopupInlineErrorAboveBackgroundId, 4928 com.android.internal.R.styleable.Theme_errorMessageAboveBackground); 4929 } else { 4930 mPopupInlineErrorBackgroundId = getResourceId(mPopupInlineErrorBackgroundId, 4931 com.android.internal.R.styleable.Theme_errorMessageBackground); 4932 } 4933 4934 mView.setBackgroundResource(above ? mPopupInlineErrorAboveBackgroundId : 4935 mPopupInlineErrorBackgroundId); 4936 } 4937 4938 private int getResourceId(int currentId, int index) { 4939 if (currentId == 0) { 4940 TypedArray styledAttributes = mView.getContext().obtainStyledAttributes( 4941 R.styleable.Theme); 4942 currentId = styledAttributes.getResourceId(index, 0); 4943 styledAttributes.recycle(); 4944 } 4945 return currentId; 4946 } 4947 4948 @Override 4949 public void update(int x, int y, int w, int h, boolean force) { 4950 super.update(x, y, w, h, force); 4951 4952 boolean above = isAboveAnchor(); 4953 if (above != mAbove) { 4954 fixDirection(above); 4955 } 4956 } 4957 } 4958 4959 static class InputContentType { 4960 int imeOptions = EditorInfo.IME_NULL; 4961 String privateImeOptions; 4962 CharSequence imeActionLabel; 4963 int imeActionId; 4964 Bundle extras; 4965 OnEditorActionListener onEditorActionListener; 4966 boolean enterDown; 4967 } 4968 4969 static class InputMethodState { 4970 ExtractedTextRequest mExtractedTextRequest; 4971 final ExtractedText mExtractedText = new ExtractedText(); 4972 int mBatchEditNesting; 4973 boolean mCursorChanged; 4974 boolean mSelectionModeChanged; 4975 boolean mContentChanged; 4976 int mChangedStart, mChangedEnd, mChangedDelta; 4977 } 4978 4979 /** 4980 * @return True iff (start, end) is a valid range within the text. 4981 */ 4982 private static boolean isValidRange(CharSequence text, int start, int end) { 4983 return 0 <= start && start <= end && end <= text.length(); 4984 } 4985 4986 /** 4987 * An InputFilter that monitors text input to maintain undo history. It does not modify the 4988 * text being typed (and hence always returns null from the filter() method). 4989 */ 4990 public static class UndoInputFilter implements InputFilter { 4991 private final Editor mEditor; 4992 4993 // Whether the current filter pass is directly caused by an end-user text edit. 4994 private boolean mIsUserEdit; 4995 4996 // Whether the text field is handling an IME composition. Must be parceled in case the user 4997 // rotates the screen during composition. 4998 private boolean mHasComposition; 4999 5000 public UndoInputFilter(Editor editor) { 5001 mEditor = editor; 5002 } 5003 5004 public void saveInstanceState(Parcel parcel) { 5005 parcel.writeInt(mIsUserEdit ? 1 : 0); 5006 parcel.writeInt(mHasComposition ? 1 : 0); 5007 } 5008 5009 public void restoreInstanceState(Parcel parcel) { 5010 mIsUserEdit = parcel.readInt() != 0; 5011 mHasComposition = parcel.readInt() != 0; 5012 } 5013 5014 /** 5015 * Signals that a user-triggered edit is starting. 5016 */ 5017 public void beginBatchEdit() { 5018 if (DEBUG_UNDO) Log.d(TAG, "beginBatchEdit"); 5019 mIsUserEdit = true; 5020 } 5021 5022 public void endBatchEdit() { 5023 if (DEBUG_UNDO) Log.d(TAG, "endBatchEdit"); 5024 mIsUserEdit = false; 5025 } 5026 5027 @Override 5028 public CharSequence filter(CharSequence source, int start, int end, 5029 Spanned dest, int dstart, int dend) { 5030 if (DEBUG_UNDO) { 5031 Log.d(TAG, "filter: source=" + source + " (" + start + "-" + end + ") " + 5032 "dest=" + dest + " (" + dstart + "-" + dend + ")"); 5033 } 5034 5035 // Check to see if this edit should be tracked for undo. 5036 if (!canUndoEdit(source, start, end, dest, dstart, dend)) { 5037 return null; 5038 } 5039 5040 // Check for and handle IME composition edits. 5041 if (handleCompositionEdit(source, start, end, dstart)) { 5042 return null; 5043 } 5044 5045 // Handle keyboard edits. 5046 handleKeyboardEdit(source, start, end, dest, dstart, dend); 5047 return null; 5048 } 5049 5050 /** 5051 * Returns true iff the edit was handled, either because it should be ignored or because 5052 * this function created an undo operation for it. 5053 */ 5054 private boolean handleCompositionEdit(CharSequence source, int start, int end, int dstart) { 5055 // Ignore edits while the user is composing. 5056 if (isComposition(source)) { 5057 mHasComposition = true; 5058 return true; 5059 } 5060 final boolean hadComposition = mHasComposition; 5061 mHasComposition = false; 5062 5063 // Check for the transition out of the composing state. 5064 if (hadComposition) { 5065 // If there was no text the user canceled composition. Ignore the edit. 5066 if (start == end) { 5067 return true; 5068 } 5069 5070 // Otherwise the user inserted the composition. 5071 String newText = TextUtils.substring(source, start, end); 5072 EditOperation edit = new EditOperation(mEditor, "", dstart, newText); 5073 recordEdit(edit, false /* forceMerge */); 5074 return true; 5075 } 5076 5077 // This was neither a composition event nor a transition out of composing. 5078 return false; 5079 } 5080 5081 private void handleKeyboardEdit(CharSequence source, int start, int end, 5082 Spanned dest, int dstart, int dend) { 5083 // An application may install a TextWatcher to provide additional modifications after 5084 // the initial input filters run (e.g. a credit card formatter that adds spaces to a 5085 // string). This results in multiple filter() calls for what the user considers to be 5086 // a single operation. Always undo the whole set of changes in one step. 5087 final boolean forceMerge = isInTextWatcher(); 5088 5089 // Build a new operation with all the information from this edit. 5090 String newText = TextUtils.substring(source, start, end); 5091 String oldText = TextUtils.substring(dest, dstart, dend); 5092 EditOperation edit = new EditOperation(mEditor, oldText, dstart, newText); 5093 recordEdit(edit, forceMerge); 5094 } 5095 5096 /** 5097 * Fetches the last undo operation and checks to see if a new edit should be merged into it. 5098 * If forceMerge is true then the new edit is always merged. 5099 */ 5100 private void recordEdit(EditOperation edit, boolean forceMerge) { 5101 // Fetch the last edit operation and attempt to merge in the new edit. 5102 final UndoManager um = mEditor.mUndoManager; 5103 um.beginUpdate("Edit text"); 5104 EditOperation lastEdit = um.getLastOperation( 5105 EditOperation.class, mEditor.mUndoOwner, UndoManager.MERGE_MODE_UNIQUE); 5106 if (lastEdit == null) { 5107 // Add this as the first edit. 5108 if (DEBUG_UNDO) Log.d(TAG, "filter: adding first op " + edit); 5109 um.addOperation(edit, UndoManager.MERGE_MODE_NONE); 5110 } else if (forceMerge) { 5111 // Forced merges take priority because they could be the result of a non-user-edit 5112 // change and this case should not create a new undo operation. 5113 if (DEBUG_UNDO) Log.d(TAG, "filter: force merge " + edit); 5114 lastEdit.forceMergeWith(edit); 5115 } else if (!mIsUserEdit) { 5116 // An application directly modified the Editable outside of a text edit. Treat this 5117 // as a new change and don't attempt to merge. 5118 if (DEBUG_UNDO) Log.d(TAG, "non-user edit, new op " + edit); 5119 um.commitState(mEditor.mUndoOwner); 5120 um.addOperation(edit, UndoManager.MERGE_MODE_NONE); 5121 } else if (lastEdit.mergeWith(edit)) { 5122 // Merge succeeded, nothing else to do. 5123 if (DEBUG_UNDO) Log.d(TAG, "filter: merge succeeded, created " + lastEdit); 5124 } else { 5125 // Could not merge with the last edit, so commit the last edit and add this edit. 5126 if (DEBUG_UNDO) Log.d(TAG, "filter: merge failed, adding " + edit); 5127 um.commitState(mEditor.mUndoOwner); 5128 um.addOperation(edit, UndoManager.MERGE_MODE_NONE); 5129 } 5130 um.endUpdate(); 5131 } 5132 5133 private boolean canUndoEdit(CharSequence source, int start, int end, 5134 Spanned dest, int dstart, int dend) { 5135 if (!mEditor.mAllowUndo) { 5136 if (DEBUG_UNDO) Log.d(TAG, "filter: undo is disabled"); 5137 return false; 5138 } 5139 5140 if (mEditor.mUndoManager.isInUndo()) { 5141 if (DEBUG_UNDO) Log.d(TAG, "filter: skipping, currently performing undo/redo"); 5142 return false; 5143 } 5144 5145 // Text filters run before input operations are applied. However, some input operations 5146 // are invalid and will throw exceptions when applied. This is common in tests. Don't 5147 // attempt to undo invalid operations. 5148 if (!isValidRange(source, start, end) || !isValidRange(dest, dstart, dend)) { 5149 if (DEBUG_UNDO) Log.d(TAG, "filter: invalid op"); 5150 return false; 5151 } 5152 5153 // Earlier filters can rewrite input to be a no-op, for example due to a length limit 5154 // on an input field. Skip no-op changes. 5155 if (start == end && dstart == dend) { 5156 if (DEBUG_UNDO) Log.d(TAG, "filter: skipping no-op"); 5157 return false; 5158 } 5159 5160 return true; 5161 } 5162 5163 private boolean isComposition(CharSequence source) { 5164 if (!(source instanceof Spannable)) { 5165 return false; 5166 } 5167 // This is a composition edit if the source has a non-zero-length composing span. 5168 Spannable text = (Spannable) source; 5169 int composeBegin = EditableInputConnection.getComposingSpanStart(text); 5170 int composeEnd = EditableInputConnection.getComposingSpanEnd(text); 5171 return composeBegin < composeEnd; 5172 } 5173 5174 private boolean isInTextWatcher() { 5175 CharSequence text = mEditor.mTextView.getText(); 5176 return (text instanceof SpannableStringBuilder) 5177 && ((SpannableStringBuilder) text).getTextWatcherDepth() > 0; 5178 } 5179 } 5180 5181 /** 5182 * An operation to undo a single "edit" to a text view. 5183 */ 5184 public static class EditOperation extends UndoOperation<Editor> { 5185 private static final int TYPE_INSERT = 0; 5186 private static final int TYPE_DELETE = 1; 5187 private static final int TYPE_REPLACE = 2; 5188 5189 private int mType; 5190 private String mOldText; 5191 private int mOldTextStart; 5192 private String mNewText; 5193 private int mNewTextStart; 5194 5195 private int mOldCursorPos; 5196 private int mNewCursorPos; 5197 5198 /** 5199 * Constructs an edit operation from a text input operation on editor that replaces the 5200 * oldText starting at dstart with newText. 5201 */ 5202 public EditOperation(Editor editor, String oldText, int dstart, String newText) { 5203 super(editor.mUndoOwner); 5204 mOldText = oldText; 5205 mNewText = newText; 5206 5207 // Determine the type of the edit and store where it occurred. Avoid storing 5208 // irrevelant data (e.g. mNewTextStart for a delete) because that makes the 5209 // merging logic more complex (e.g. merging deletes could lead to mNewTextStart being 5210 // outside the bounds of the final text). 5211 if (mNewText.length() > 0 && mOldText.length() == 0) { 5212 mType = TYPE_INSERT; 5213 mNewTextStart = dstart; 5214 } else if (mNewText.length() == 0 && mOldText.length() > 0) { 5215 mType = TYPE_DELETE; 5216 mOldTextStart = dstart; 5217 } else { 5218 mType = TYPE_REPLACE; 5219 mOldTextStart = mNewTextStart = dstart; 5220 } 5221 5222 // Store cursor data. 5223 mOldCursorPos = editor.mTextView.getSelectionStart(); 5224 mNewCursorPos = dstart + mNewText.length(); 5225 } 5226 5227 public EditOperation(Parcel src, ClassLoader loader) { 5228 super(src, loader); 5229 mType = src.readInt(); 5230 mOldText = src.readString(); 5231 mOldTextStart = src.readInt(); 5232 mNewText = src.readString(); 5233 mNewTextStart = src.readInt(); 5234 mOldCursorPos = src.readInt(); 5235 mNewCursorPos = src.readInt(); 5236 } 5237 5238 @Override 5239 public void writeToParcel(Parcel dest, int flags) { 5240 dest.writeInt(mType); 5241 dest.writeString(mOldText); 5242 dest.writeInt(mOldTextStart); 5243 dest.writeString(mNewText); 5244 dest.writeInt(mNewTextStart); 5245 dest.writeInt(mOldCursorPos); 5246 dest.writeInt(mNewCursorPos); 5247 } 5248 5249 private int getNewTextEnd() { 5250 return mNewTextStart + mNewText.length(); 5251 } 5252 5253 private int getOldTextEnd() { 5254 return mOldTextStart + mOldText.length(); 5255 } 5256 5257 @Override 5258 public void commit() { 5259 } 5260 5261 @Override 5262 public void undo() { 5263 if (DEBUG_UNDO) Log.d(TAG, "undo"); 5264 // Remove the new text and insert the old. 5265 Editor editor = getOwnerData(); 5266 Editable text = (Editable) editor.mTextView.getText(); 5267 modifyText(text, mNewTextStart, getNewTextEnd(), mOldText, mOldTextStart, 5268 mOldCursorPos); 5269 } 5270 5271 @Override 5272 public void redo() { 5273 if (DEBUG_UNDO) Log.d(TAG, "redo"); 5274 // Remove the old text and insert the new. 5275 Editor editor = getOwnerData(); 5276 Editable text = (Editable) editor.mTextView.getText(); 5277 modifyText(text, mOldTextStart, getOldTextEnd(), mNewText, mNewTextStart, 5278 mNewCursorPos); 5279 } 5280 5281 /** 5282 * Attempts to merge this existing operation with a new edit. 5283 * @param edit The new edit operation. 5284 * @return If the merge succeeded, returns true. Otherwise returns false and leaves this 5285 * object unchanged. 5286 */ 5287 private boolean mergeWith(EditOperation edit) { 5288 if (DEBUG_UNDO) { 5289 Log.d(TAG, "mergeWith old " + this); 5290 Log.d(TAG, "mergeWith new " + edit); 5291 } 5292 switch (mType) { 5293 case TYPE_INSERT: 5294 return mergeInsertWith(edit); 5295 case TYPE_DELETE: 5296 return mergeDeleteWith(edit); 5297 case TYPE_REPLACE: 5298 return mergeReplaceWith(edit); 5299 default: 5300 return false; 5301 } 5302 } 5303 5304 private boolean mergeInsertWith(EditOperation edit) { 5305 // Only merge continuous insertions. 5306 if (edit.mType != TYPE_INSERT) { 5307 return false; 5308 } 5309 // Only merge insertions that are contiguous. 5310 if (getNewTextEnd() != edit.mNewTextStart) { 5311 return false; 5312 } 5313 mNewText += edit.mNewText; 5314 mNewCursorPos = edit.mNewCursorPos; 5315 return true; 5316 } 5317 5318 // TODO: Support forward delete. 5319 private boolean mergeDeleteWith(EditOperation edit) { 5320 // Only merge continuous deletes. 5321 if (edit.mType != TYPE_DELETE) { 5322 return false; 5323 } 5324 // Only merge deletions that are contiguous. 5325 if (mOldTextStart != edit.getOldTextEnd()) { 5326 return false; 5327 } 5328 mOldTextStart = edit.mOldTextStart; 5329 mOldText = edit.mOldText + mOldText; 5330 mNewCursorPos = edit.mNewCursorPos; 5331 return true; 5332 } 5333 5334 private boolean mergeReplaceWith(EditOperation edit) { 5335 // Replacements can merge only with adjacent inserts. 5336 if (edit.mType != TYPE_INSERT || getNewTextEnd() != edit.mNewTextStart) { 5337 return false; 5338 } 5339 mOldText += edit.mOldText; 5340 mNewText += edit.mNewText; 5341 mNewCursorPos = edit.mNewCursorPos; 5342 return true; 5343 } 5344 5345 /** 5346 * Forcibly creates a single merged edit operation by simulating the entire text 5347 * contents being replaced. 5348 */ 5349 public void forceMergeWith(EditOperation edit) { 5350 if (DEBUG_UNDO) Log.d(TAG, "forceMerge"); 5351 Editor editor = getOwnerData(); 5352 5353 // Copy the text of the current field. 5354 // NOTE: Using StringBuilder instead of SpannableStringBuilder would be somewhat faster, 5355 // but would require two parallel implementations of modifyText() because Editable and 5356 // StringBuilder do not share an interface for replace/delete/insert. 5357 Editable editable = (Editable) editor.mTextView.getText(); 5358 Editable originalText = new SpannableStringBuilder(editable.toString()); 5359 5360 // Roll back the last operation. 5361 modifyText(originalText, mNewTextStart, getNewTextEnd(), mOldText, mOldTextStart, 5362 mOldCursorPos); 5363 5364 // Clone the text again and apply the new operation. 5365 Editable finalText = new SpannableStringBuilder(editable.toString()); 5366 modifyText(finalText, edit.mOldTextStart, edit.getOldTextEnd(), edit.mNewText, 5367 edit.mNewTextStart, edit.mNewCursorPos); 5368 5369 // Convert this operation into a non-mergeable replacement of the entire string. 5370 mType = TYPE_REPLACE; 5371 mNewText = finalText.toString(); 5372 mNewTextStart = 0; 5373 mOldText = originalText.toString(); 5374 mOldTextStart = 0; 5375 mNewCursorPos = edit.mNewCursorPos; 5376 // mOldCursorPos is unchanged. 5377 } 5378 5379 private static void modifyText(Editable text, int deleteFrom, int deleteTo, 5380 CharSequence newText, int newTextInsertAt, int newCursorPos) { 5381 // Apply the edit if it is still valid. 5382 if (isValidRange(text, deleteFrom, deleteTo) && 5383 newTextInsertAt <= text.length() - (deleteTo - deleteFrom)) { 5384 if (deleteFrom != deleteTo) { 5385 text.delete(deleteFrom, deleteTo); 5386 } 5387 if (newText.length() != 0) { 5388 text.insert(newTextInsertAt, newText); 5389 } 5390 } 5391 // Restore the cursor position. If there wasn't an old cursor (newCursorPos == -1) then 5392 // don't explicitly set it and rely on SpannableStringBuilder to position it. 5393 // TODO: Select all the text that was undone. 5394 if (0 <= newCursorPos && newCursorPos <= text.length()) { 5395 Selection.setSelection(text, newCursorPos); 5396 } 5397 } 5398 5399 private String getTypeString() { 5400 switch (mType) { 5401 case TYPE_INSERT: 5402 return "insert"; 5403 case TYPE_DELETE: 5404 return "delete"; 5405 case TYPE_REPLACE: 5406 return "replace"; 5407 default: 5408 return ""; 5409 } 5410 } 5411 5412 @Override 5413 public String toString() { 5414 return "[mType=" + getTypeString() + ", " + 5415 "mOldText=" + mOldText + ", " + 5416 "mOldTextStart=" + mOldTextStart + ", " + 5417 "mNewText=" + mNewText + ", " + 5418 "mNewTextStart=" + mNewTextStart + ", " + 5419 "mOldCursorPos=" + mOldCursorPos + ", " + 5420 "mNewCursorPos=" + mNewCursorPos + "]"; 5421 } 5422 5423 public static final Parcelable.ClassLoaderCreator<EditOperation> CREATOR 5424 = new Parcelable.ClassLoaderCreator<EditOperation>() { 5425 @Override 5426 public EditOperation createFromParcel(Parcel in) { 5427 return new EditOperation(in, null); 5428 } 5429 5430 @Override 5431 public EditOperation createFromParcel(Parcel in, ClassLoader loader) { 5432 return new EditOperation(in, loader); 5433 } 5434 5435 @Override 5436 public EditOperation[] newArray(int size) { 5437 return new EditOperation[size]; 5438 } 5439 }; 5440 } 5441} 5442