Editor.java revision 97af673e1f2e33a3cc48a2ab7816bbf082a2e9f4
155bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync/* 255bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync * Copyright (C) 2012 The Android Open Source Project 355bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync * 455bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync * Licensed under the Apache License, Version 2.0 (the "License"); 555bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync * you may not use this file except in compliance with the License. 655bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync * You may obtain a copy of the License at 755bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync * 855bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync * http://www.apache.org/licenses/LICENSE-2.0 955bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync * 1055bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync * Unless required by applicable law or agreed to in writing, software 1155bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync * distributed under the License is distributed on an "AS IS" BASIS, 1255bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1355bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync * See the License for the specific language governing permissions and 1455bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync * limitations under the License. 1555bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync */ 1655bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync 1755bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo syncpackage android.widget; 1855bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync 1955bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo syncimport android.R; 2055bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo syncimport android.annotation.IntDef; 2155bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo syncimport android.annotation.Nullable; 2257e42f4117e92c03d39f1e1e572f53ef5bb821b8Irfan Sheriffimport android.app.PendingIntent; 2355bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo syncimport android.app.PendingIntent.CanceledException; 2455bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo syncimport android.content.ClipData; 2555bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo syncimport android.content.ClipData.Item; 2655bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo syncimport android.content.Context; 2721ba8153325e010224c6bc75a0acdc98b6ca82e8Irfan Sheriffimport android.content.Intent; 2855bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo syncimport android.content.UndoManager; 2955bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo syncimport android.content.UndoOperation; 30bfb27bbefb013220af699881d486cc04be5ec1f5Yoshihiko Ikenagaimport android.content.UndoOwner; 316f7d385d964949e507dcc9c88012372f48d0bce7Irfan Sheriffimport android.content.pm.PackageManager; 32bfb27bbefb013220af699881d486cc04be5ec1f5Yoshihiko Ikenagaimport android.content.pm.ResolveInfo; 336f7d385d964949e507dcc9c88012372f48d0bce7Irfan Sheriffimport android.content.res.TypedArray; 3455bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo syncimport android.graphics.Canvas; 3555bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo syncimport android.graphics.Color; 3655bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo syncimport android.graphics.Matrix; 37d8544a51482c86b12da3ac82ea77b83045f689b7Jeff Brownimport android.graphics.Paint; 3855bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo syncimport android.graphics.Path; 39651cdfcbac6245f570475991588ddc2d30265e8dIrfan Sheriffimport android.graphics.Rect; 4055bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo syncimport android.graphics.RectF; 4155bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo syncimport android.graphics.drawable.Drawable; 42651cdfcbac6245f570475991588ddc2d30265e8dIrfan Sheriffimport android.os.Bundle; 4355bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo syncimport android.os.Parcel; 4455bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo syncimport android.os.Parcelable; 4521ba8153325e010224c6bc75a0acdc98b6ca82e8Irfan Sheriffimport android.os.ParcelableParcel; 46ab3b9fbfa0523e036ec71888d0da5dc55cd3301bIrfan Sheriffimport android.os.SystemClock; 4721ba8153325e010224c6bc75a0acdc98b6ca82e8Irfan Sheriffimport android.provider.Settings; 4855bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo syncimport android.text.DynamicLayout; 4955bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo syncimport android.text.Editable; 5055bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo syncimport android.text.InputFilter; 516f7d385d964949e507dcc9c88012372f48d0bce7Irfan Sheriffimport android.text.InputType; 5255bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo syncimport android.text.Layout; 5355bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo syncimport android.text.ParcelableSpan; 5421ba8153325e010224c6bc75a0acdc98b6ca82e8Irfan Sheriffimport android.text.Selection; 55ab3b9fbfa0523e036ec71888d0da5dc55cd3301bIrfan Sheriffimport android.text.SpanWatcher; 5621ba8153325e010224c6bc75a0acdc98b6ca82e8Irfan Sheriffimport android.text.Spannable; 5755bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo syncimport android.text.SpannableStringBuilder; 5855bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo syncimport android.text.Spanned; 5955bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo syncimport android.text.StaticLayout; 60f118043ca726c65f04cddc6321c9e820b577fc6fIrfan Sheriffimport android.text.TextUtils; 61f118043ca726c65f04cddc6321c9e820b577fc6fIrfan Sheriffimport android.text.method.KeyListener; 62f118043ca726c65f04cddc6321c9e820b577fc6fIrfan Sheriffimport android.text.method.MetaKeyKeyListener; 63f118043ca726c65f04cddc6321c9e820b577fc6fIrfan Sheriffimport android.text.method.MovementMethod; 64f118043ca726c65f04cddc6321c9e820b577fc6fIrfan Sheriffimport android.text.method.WordIterator; 65f118043ca726c65f04cddc6321c9e820b577fc6fIrfan Sheriffimport android.text.style.EasyEditSpan; 66f118043ca726c65f04cddc6321c9e820b577fc6fIrfan Sheriffimport android.text.style.SuggestionRangeSpan; 67f118043ca726c65f04cddc6321c9e820b577fc6fIrfan Sheriffimport android.text.style.SuggestionSpan; 68f118043ca726c65f04cddc6321c9e820b577fc6fIrfan Sheriffimport android.text.style.TextAppearanceSpan; 69f118043ca726c65f04cddc6321c9e820b577fc6fIrfan Sheriffimport android.text.style.URLSpan; 70f118043ca726c65f04cddc6321c9e820b577fc6fIrfan Sheriffimport android.util.DisplayMetrics; 71f118043ca726c65f04cddc6321c9e820b577fc6fIrfan Sheriffimport android.util.Log; 72f118043ca726c65f04cddc6321c9e820b577fc6fIrfan Sheriffimport android.util.SparseArray; 733a67e2515bff73fab57621b1f9966662e83b7881Irfan Sheriffimport android.view.ActionMode; 74ea5b16ac5751022de73e8f1225407eb01e7f1824Irfan Sheriffimport android.view.ActionMode.Callback; 75ea5b16ac5751022de73e8f1225407eb01e7f1824Irfan Sheriffimport android.view.DisplayListCanvas; 7655bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo syncimport android.view.DragEvent; 77ea5b16ac5751022de73e8f1225407eb01e7f1824Irfan Sheriffimport android.view.Gravity; 7855bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo syncimport android.view.InputDevice; 7955bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo syncimport android.view.LayoutInflater; 803a67e2515bff73fab57621b1f9966662e83b7881Irfan Sheriffimport android.view.Menu; 813a67e2515bff73fab57621b1f9966662e83b7881Irfan Sheriffimport android.view.MenuItem; 823a67e2515bff73fab57621b1f9966662e83b7881Irfan Sheriffimport android.view.MotionEvent; 833a67e2515bff73fab57621b1f9966662e83b7881Irfan Sheriffimport android.view.RenderNode; 843a67e2515bff73fab57621b1f9966662e83b7881Irfan Sheriffimport android.view.View; 853a67e2515bff73fab57621b1f9966662e83b7881Irfan Sheriffimport android.view.View.DragShadowBuilder; 864be4d31f34a0fd0e23de1cbda311c07412f8d0b8Irfan Sheriffimport android.view.View.OnClickListener; 873a67e2515bff73fab57621b1f9966662e83b7881Irfan Sheriffimport android.view.ViewConfiguration; 883a67e2515bff73fab57621b1f9966662e83b7881Irfan Sheriffimport android.view.ViewGroup; 893a67e2515bff73fab57621b1f9966662e83b7881Irfan Sheriffimport android.view.ViewGroup.LayoutParams; 903a67e2515bff73fab57621b1f9966662e83b7881Irfan Sheriffimport android.view.ViewParent; 913a67e2515bff73fab57621b1f9966662e83b7881Irfan Sheriffimport android.view.ViewTreeObserver; 92ffadfb9ffdced62db215319d3edc7717802088fbVinit Deshapndeimport android.view.WindowManager; 93f118043ca726c65f04cddc6321c9e820b577fc6fIrfan Sheriffimport android.view.accessibility.AccessibilityNodeInfo; 9421ba8153325e010224c6bc75a0acdc98b6ca82e8Irfan Sheriffimport android.view.inputmethod.CorrectionInfo; 9521ba8153325e010224c6bc75a0acdc98b6ca82e8Irfan Sheriffimport android.view.inputmethod.CursorAnchorInfo; 9621ba8153325e010224c6bc75a0acdc98b6ca82e8Irfan Sheriffimport android.view.inputmethod.EditorInfo; 9721ba8153325e010224c6bc75a0acdc98b6ca82e8Irfan Sheriffimport android.view.inputmethod.ExtractedText; 9821ba8153325e010224c6bc75a0acdc98b6ca82e8Irfan Sheriffimport android.view.inputmethod.ExtractedTextRequest; 9921ba8153325e010224c6bc75a0acdc98b6ca82e8Irfan Sheriffimport android.view.inputmethod.InputConnection; 10021ba8153325e010224c6bc75a0acdc98b6ca82e8Irfan Sheriffimport android.view.inputmethod.InputMethodManager; 10121ba8153325e010224c6bc75a0acdc98b6ca82e8Irfan Sheriffimport android.widget.AdapterView.OnItemClickListener; 102e298d884580006cbcd4aec8fd7877dae3f081eecIrfan Sheriffimport android.widget.TextView.Drawables; 10321ba8153325e010224c6bc75a0acdc98b6ca82e8Irfan Sheriffimport android.widget.TextView.OnEditorActionListener; 1044be4d31f34a0fd0e23de1cbda311c07412f8d0b8Irfan Sheriff 1054be4d31f34a0fd0e23de1cbda311c07412f8d0b8Irfan Sheriffimport com.android.internal.annotations.VisibleForTesting; 10621ba8153325e010224c6bc75a0acdc98b6ca82e8Irfan Sheriffimport com.android.internal.util.ArrayUtils; 10721ba8153325e010224c6bc75a0acdc98b6ca82e8Irfan Sheriffimport com.android.internal.util.GrowingArrayUtils; 10821ba8153325e010224c6bc75a0acdc98b6ca82e8Irfan Sheriffimport com.android.internal.util.Preconditions; 10921ba8153325e010224c6bc75a0acdc98b6ca82e8Irfan Sheriffimport com.android.internal.widget.EditableInputConnection; 110ffadfb9ffdced62db215319d3edc7717802088fbVinit Deshapnde 111f118043ca726c65f04cddc6321c9e820b577fc6fIrfan Sheriffimport java.lang.annotation.Retention; 11257e42f4117e92c03d39f1e1e572f53ef5bb821b8Irfan Sheriffimport java.lang.annotation.RetentionPolicy; 11357e42f4117e92c03d39f1e1e572f53ef5bb821b8Irfan Sheriffimport java.text.BreakIterator; 11457e42f4117e92c03d39f1e1e572f53ef5bb821b8Irfan Sheriffimport java.util.Arrays; 11557e42f4117e92c03d39f1e1e572f53ef5bb821b8Irfan Sheriffimport java.util.Comparator; 11657e42f4117e92c03d39f1e1e572f53ef5bb821b8Irfan Sheriffimport java.util.HashMap; 11757e42f4117e92c03d39f1e1e572f53ef5bb821b8Irfan Sheriffimport java.util.List; 11857e42f4117e92c03d39f1e1e572f53ef5bb821b8Irfan Sheriff 119ffadfb9ffdced62db215319d3edc7717802088fbVinit Deshapnde 120f118043ca726c65f04cddc6321c9e820b577fc6fIrfan Sheriff/** 121bfb27bbefb013220af699881d486cc04be5ec1f5Yoshihiko Ikenaga * Helper class used by TextView to handle editable text views. 12257e42f4117e92c03d39f1e1e572f53ef5bb821b8Irfan Sheriff * 12357e42f4117e92c03d39f1e1e572f53ef5bb821b8Irfan Sheriff * @hide 12457e42f4117e92c03d39f1e1e572f53ef5bb821b8Irfan Sheriff */ 125bfb27bbefb013220af699881d486cc04be5ec1f5Yoshihiko Ikenagapublic class Editor { 126bfb27bbefb013220af699881d486cc04be5ec1f5Yoshihiko Ikenaga private static final String TAG = "Editor"; 1273a67e2515bff73fab57621b1f9966662e83b7881Irfan Sheriff private static final boolean DEBUG_UNDO = false; 1283a67e2515bff73fab57621b1f9966662e83b7881Irfan Sheriff 1293a67e2515bff73fab57621b1f9966662e83b7881Irfan Sheriff static final int BLINK = 500; 1303a67e2515bff73fab57621b1f9966662e83b7881Irfan Sheriff private static final float[] TEMP_POSITION = new float[2]; 1313a67e2515bff73fab57621b1f9966662e83b7881Irfan Sheriff private static int DRAG_SHADOW_MAX_TEXT_LENGTH = 20; 13221ba8153325e010224c6bc75a0acdc98b6ca82e8Irfan Sheriff private static final float LINE_SLOP_MULTIPLIER_FOR_HANDLEVIEWS = 0.5f; 133f118043ca726c65f04cddc6321c9e820b577fc6fIrfan Sheriff private static final int UNSET_X_VALUE = -1; 13421ba8153325e010224c6bc75a0acdc98b6ca82e8Irfan Sheriff private static final int UNSET_LINE = -1; 13555bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync // Tag used when the Editor maintains its own separate UndoManager. 13655bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync private static final String UNDO_OWNER_TAG = "Editor"; 1376f7d385d964949e507dcc9c88012372f48d0bce7Irfan Sheriff 13855bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync // Ordering constants used to place the Action Mode items in their menu. 139f118043ca726c65f04cddc6321c9e820b577fc6fIrfan Sheriff private static final int MENU_ITEM_ORDER_CUT = 1; 14021ba8153325e010224c6bc75a0acdc98b6ca82e8Irfan Sheriff private static final int MENU_ITEM_ORDER_COPY = 2; 14155bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync private static final int MENU_ITEM_ORDER_PASTE = 3; 14255bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync private static final int MENU_ITEM_ORDER_SHARE = 4; 1433a67e2515bff73fab57621b1f9966662e83b7881Irfan Sheriff private static final int MENU_ITEM_ORDER_SELECT_ALL = 5; 1443a67e2515bff73fab57621b1f9966662e83b7881Irfan Sheriff private static final int MENU_ITEM_ORDER_REPLACE = 6; 1453a67e2515bff73fab57621b1f9966662e83b7881Irfan Sheriff private static final int MENU_ITEM_ORDER_PROCESS_TEXT_INTENT_ACTIONS_START = 10; 1463a67e2515bff73fab57621b1f9966662e83b7881Irfan Sheriff 1473a67e2515bff73fab57621b1f9966662e83b7881Irfan Sheriff // Each Editor manages its own undo stack. 1483a67e2515bff73fab57621b1f9966662e83b7881Irfan Sheriff private final UndoManager mUndoManager = new UndoManager(); 1493a67e2515bff73fab57621b1f9966662e83b7881Irfan Sheriff private UndoOwner mUndoOwner = mUndoManager.getOwner(UNDO_OWNER_TAG, this); 150f118043ca726c65f04cddc6321c9e820b577fc6fIrfan Sheriff final UndoInputFilter mUndoInputFilter = new UndoInputFilter(this); 1513a67e2515bff73fab57621b1f9966662e83b7881Irfan Sheriff boolean mAllowUndo = true; 1523a67e2515bff73fab57621b1f9966662e83b7881Irfan Sheriff 1533a67e2515bff73fab57621b1f9966662e83b7881Irfan Sheriff // Cursor Controllers. 15441de2404658c7c6faf6c78e777ba50af11784f5cIrfan Sheriff InsertionPointCursorController mInsertionPointCursorController; 15541de2404658c7c6faf6c78e777ba50af11784f5cIrfan Sheriff SelectionModifierCursorController mSelectionModifierCursorController; 15641de2404658c7c6faf6c78e777ba50af11784f5cIrfan Sheriff // Action mode used when text is selected or when actions on an insertion cursor are triggered. 15741de2404658c7c6faf6c78e777ba50af11784f5cIrfan Sheriff ActionMode mTextActionMode; 15841de2404658c7c6faf6c78e777ba50af11784f5cIrfan Sheriff boolean mInsertionControllerEnabled; 15941de2404658c7c6faf6c78e777ba50af11784f5cIrfan Sheriff boolean mSelectionControllerEnabled; 16041de2404658c7c6faf6c78e777ba50af11784f5cIrfan Sheriff 16141de2404658c7c6faf6c78e777ba50af11784f5cIrfan Sheriff // Used to highlight a word when it is corrected by the IME 16241de2404658c7c6faf6c78e777ba50af11784f5cIrfan Sheriff CorrectionHighlighter mCorrectionHighlighter; 1636f7d385d964949e507dcc9c88012372f48d0bce7Irfan Sheriff 16455bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync InputContentType mInputContentType; 16521ba8153325e010224c6bc75a0acdc98b6ca82e8Irfan Sheriff InputMethodState mInputMethodState; 16655bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync 16755bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync private static class TextRenderNode { 16810ca870d3b58ec6fd62b85466ec1211fca77d33eIrfan Sheriff RenderNode renderNode; 16910ca870d3b58ec6fd62b85466ec1211fca77d33eIrfan Sheriff boolean isDirty; 170f118043ca726c65f04cddc6321c9e820b577fc6fIrfan Sheriff public TextRenderNode(String name) { 171f118043ca726c65f04cddc6321c9e820b577fc6fIrfan Sheriff isDirty = true; 172f118043ca726c65f04cddc6321c9e820b577fc6fIrfan Sheriff renderNode = RenderNode.create(name, null); 173f118043ca726c65f04cddc6321c9e820b577fc6fIrfan Sheriff } 17410ca870d3b58ec6fd62b85466ec1211fca77d33eIrfan Sheriff boolean needsRecord() { return isDirty || !renderNode.isValid(); } 175f118043ca726c65f04cddc6321c9e820b577fc6fIrfan Sheriff } 17610ca870d3b58ec6fd62b85466ec1211fca77d33eIrfan Sheriff TextRenderNode[] mTextRenderNodes; 17710ca870d3b58ec6fd62b85466ec1211fca77d33eIrfan Sheriff 17855bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync boolean mFrozenWithFocus; 17955bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync boolean mSelectionMoved; 18021ba8153325e010224c6bc75a0acdc98b6ca82e8Irfan Sheriff boolean mTouchFocusSelected; 18155bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync 18255bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync KeyListener mKeyListener; 18355bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync int mInputType = EditorInfo.TYPE_NULL; 18455bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync 18555bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync boolean mDiscardNextActionUp; 186651cdfcbac6245f570475991588ddc2d30265e8dIrfan Sheriff boolean mIgnoreActionUpEvent; 18755bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync 18855bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync long mShowCursor; 18955bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync Blink mBlink; 19055bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync 191651cdfcbac6245f570475991588ddc2d30265e8dIrfan Sheriff boolean mCursorVisible = true; 19255bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync boolean mSelectAllOnFocus; 19355bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync boolean mTextIsSelectable; 19421ba8153325e010224c6bc75a0acdc98b6ca82e8Irfan Sheriff 19555bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync CharSequence mError; 19655bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync boolean mErrorWasChanged; 19755bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync ErrorPopup mErrorPopup; 19855bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync 199651cdfcbac6245f570475991588ddc2d30265e8dIrfan Sheriff /** 20055bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync * This flag is set if the TextView tries to display an error before it 20155bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync * is attached to the window (so its position is still unknown). 20255bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync * It causes the error to be shown later, when onAttachedToWindow() 20355bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync * is called. 20455bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync */ 20555bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync boolean mShowErrorAfterAttach; 20655bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync 2074be4d31f34a0fd0e23de1cbda311c07412f8d0b8Irfan Sheriff boolean mInBatchEditControllers; 20855bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync boolean mShowSoftInputOnFocus = true; 20955bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync boolean mPreserveDetachedSelection; 21055bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync boolean mTemporaryDetach; 21155bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync 21255bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync SuggestionsPopupWindow mSuggestionsPopupWindow; 21355bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync SuggestionRangeSpan mSuggestionRangeSpan; 21455bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync Runnable mShowSuggestionRunnable; 21555bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync 21655bc5f3e0408bcb5a39a6732de0b2d1aa99a55berepo sync final Drawable[] mCursorDrawable = new Drawable[2]; 217 int mCursorCount; // Current number of used mCursorDrawable: 0 (resource=0), 1 or 2 (split) 218 219 private Drawable mSelectHandleLeft; 220 private Drawable mSelectHandleRight; 221 private Drawable mSelectHandleCenter; 222 223 // Global listener that detects changes in the global position of the TextView 224 private PositionListener mPositionListener; 225 226 float mLastDownPositionX, mLastDownPositionY; 227 Callback mCustomSelectionActionModeCallback; 228 Callback mCustomInsertionActionModeCallback; 229 230 // Set when this TextView gained focus with some text selected. Will start selection mode. 231 boolean mCreatedWithASelection; 232 233 boolean mDoubleTap = false; 234 235 private Runnable mInsertionActionModeRunnable; 236 237 // The span controller helps monitoring the changes to which the Editor needs to react: 238 // - EasyEditSpans, for which we have some UI to display on attach and on hide 239 // - SelectionSpans, for which we need to call updateSelection if an IME is attached 240 private SpanController mSpanController; 241 242 WordIterator mWordIterator; 243 SpellChecker mSpellChecker; 244 245 // This word iterator is set with text and used to determine word boundaries 246 // when a user is selecting text. 247 private WordIterator mWordIteratorWithText; 248 // Indicate that the text in the word iterator needs to be updated. 249 private boolean mUpdateWordIteratorText; 250 251 private Rect mTempRect; 252 253 private TextView mTextView; 254 255 final ProcessTextIntentActionsHandler mProcessTextIntentActionsHandler; 256 257 final CursorAnchorInfoNotifier mCursorAnchorInfoNotifier = new CursorAnchorInfoNotifier(); 258 259 private final Runnable mShowFloatingToolbar = new Runnable() { 260 @Override 261 public void run() { 262 if (mTextActionMode != null) { 263 mTextActionMode.hide(0); // hide off. 264 } 265 } 266 }; 267 268 boolean mIsInsertionActionModeStartPending = false; 269 270 Editor(TextView textView) { 271 mTextView = textView; 272 // Synchronize the filter list, which places the undo input filter at the end. 273 mTextView.setFilters(mTextView.getFilters()); 274 mProcessTextIntentActionsHandler = new ProcessTextIntentActionsHandler(this); 275 } 276 277 ParcelableParcel saveInstanceState() { 278 ParcelableParcel state = new ParcelableParcel(getClass().getClassLoader()); 279 Parcel parcel = state.getParcel(); 280 mUndoManager.saveInstanceState(parcel); 281 mUndoInputFilter.saveInstanceState(parcel); 282 return state; 283 } 284 285 void restoreInstanceState(ParcelableParcel state) { 286 Parcel parcel = state.getParcel(); 287 mUndoManager.restoreInstanceState(parcel, state.getClassLoader()); 288 mUndoInputFilter.restoreInstanceState(parcel); 289 // Re-associate this object as the owner of undo state. 290 mUndoOwner = mUndoManager.getOwner(UNDO_OWNER_TAG, this); 291 } 292 293 /** 294 * Forgets all undo and redo operations for this Editor. 295 */ 296 void forgetUndoRedo() { 297 UndoOwner[] owners = { mUndoOwner }; 298 mUndoManager.forgetUndos(owners, -1 /* all */); 299 mUndoManager.forgetRedos(owners, -1 /* all */); 300 } 301 302 boolean canUndo() { 303 UndoOwner[] owners = { mUndoOwner }; 304 return mAllowUndo && mUndoManager.countUndos(owners) > 0; 305 } 306 307 boolean canRedo() { 308 UndoOwner[] owners = { mUndoOwner }; 309 return mAllowUndo && mUndoManager.countRedos(owners) > 0; 310 } 311 312 void undo() { 313 if (!mAllowUndo) { 314 return; 315 } 316 UndoOwner[] owners = { mUndoOwner }; 317 mUndoManager.undo(owners, 1); // Undo 1 action. 318 } 319 320 void redo() { 321 if (!mAllowUndo) { 322 return; 323 } 324 UndoOwner[] owners = { mUndoOwner }; 325 mUndoManager.redo(owners, 1); // Redo 1 action. 326 } 327 328 void replace() { 329 int middle = (mTextView.getSelectionStart() + mTextView.getSelectionEnd()) / 2; 330 stopTextActionMode(); 331 Selection.setSelection((Spannable) mTextView.getText(), middle); 332 showSuggestions(); 333 } 334 335 void onAttachedToWindow() { 336 if (mShowErrorAfterAttach) { 337 showError(); 338 mShowErrorAfterAttach = false; 339 } 340 mTemporaryDetach = false; 341 342 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 343 // No need to create the controller. 344 // The get method will add the listener on controller creation. 345 if (mInsertionPointCursorController != null) { 346 observer.addOnTouchModeChangeListener(mInsertionPointCursorController); 347 } 348 if (mSelectionModifierCursorController != null) { 349 mSelectionModifierCursorController.resetTouchOffsets(); 350 observer.addOnTouchModeChangeListener(mSelectionModifierCursorController); 351 } 352 updateSpellCheckSpans(0, mTextView.getText().length(), 353 true /* create the spell checker if needed */); 354 355 if (mTextView.hasTransientState() && 356 mTextView.getSelectionStart() != mTextView.getSelectionEnd()) { 357 // Since transient state is reference counted make sure it stays matched 358 // with our own calls to it for managing selection. 359 // The action mode callback will set this back again when/if the action mode starts. 360 mTextView.setHasTransientState(false); 361 362 // We had an active selection from before, start the selection mode. 363 startSelectionActionMode(); 364 } 365 366 getPositionListener().addSubscriber(mCursorAnchorInfoNotifier, true); 367 resumeBlink(); 368 } 369 370 void onDetachedFromWindow() { 371 getPositionListener().removeSubscriber(mCursorAnchorInfoNotifier); 372 373 if (mError != null) { 374 hideError(); 375 } 376 377 suspendBlink(); 378 379 if (mInsertionPointCursorController != null) { 380 mInsertionPointCursorController.onDetached(); 381 } 382 383 if (mSelectionModifierCursorController != null) { 384 mSelectionModifierCursorController.onDetached(); 385 } 386 387 if (mShowSuggestionRunnable != null) { 388 mTextView.removeCallbacks(mShowSuggestionRunnable); 389 } 390 391 // Cancel the single tap delayed runnable. 392 if (mInsertionActionModeRunnable != null) { 393 mTextView.removeCallbacks(mInsertionActionModeRunnable); 394 } 395 396 mTextView.removeCallbacks(mShowFloatingToolbar); 397 398 discardTextDisplayLists(); 399 400 if (mSpellChecker != null) { 401 mSpellChecker.closeSession(); 402 // Forces the creation of a new SpellChecker next time this window is created. 403 // Will handle the cases where the settings has been changed in the meantime. 404 mSpellChecker = null; 405 } 406 407 mPreserveDetachedSelection = true; 408 hideCursorAndSpanControllers(); 409 stopTextActionMode(); 410 mPreserveDetachedSelection = false; 411 mTemporaryDetach = false; 412 } 413 414 private void discardTextDisplayLists() { 415 if (mTextRenderNodes != null) { 416 for (int i = 0; i < mTextRenderNodes.length; i++) { 417 RenderNode displayList = mTextRenderNodes[i] != null 418 ? mTextRenderNodes[i].renderNode : null; 419 if (displayList != null && displayList.isValid()) { 420 displayList.discardDisplayList(); 421 } 422 } 423 } 424 } 425 426 private void showError() { 427 if (mTextView.getWindowToken() == null) { 428 mShowErrorAfterAttach = true; 429 return; 430 } 431 432 if (mErrorPopup == null) { 433 LayoutInflater inflater = LayoutInflater.from(mTextView.getContext()); 434 final TextView err = (TextView) inflater.inflate( 435 com.android.internal.R.layout.textview_hint, null); 436 437 final float scale = mTextView.getResources().getDisplayMetrics().density; 438 mErrorPopup = new ErrorPopup(err, (int)(200 * scale + 0.5f), (int)(50 * scale + 0.5f)); 439 mErrorPopup.setFocusable(false); 440 // The user is entering text, so the input method is needed. We 441 // don't want the popup to be displayed on top of it. 442 mErrorPopup.setInputMethodMode(PopupWindow.INPUT_METHOD_NEEDED); 443 } 444 445 TextView tv = (TextView) mErrorPopup.getContentView(); 446 chooseSize(mErrorPopup, mError, tv); 447 tv.setText(mError); 448 449 mErrorPopup.showAsDropDown(mTextView, getErrorX(), getErrorY()); 450 mErrorPopup.fixDirection(mErrorPopup.isAboveAnchor()); 451 } 452 453 public void setError(CharSequence error, Drawable icon) { 454 mError = TextUtils.stringOrSpannedString(error); 455 mErrorWasChanged = true; 456 457 if (mError == null) { 458 setErrorIcon(null); 459 if (mErrorPopup != null) { 460 if (mErrorPopup.isShowing()) { 461 mErrorPopup.dismiss(); 462 } 463 464 mErrorPopup = null; 465 } 466 mShowErrorAfterAttach = false; 467 } else { 468 setErrorIcon(icon); 469 if (mTextView.isFocused()) { 470 showError(); 471 } 472 } 473 } 474 475 private void setErrorIcon(Drawable icon) { 476 Drawables dr = mTextView.mDrawables; 477 if (dr == null) { 478 mTextView.mDrawables = dr = new Drawables(mTextView.getContext()); 479 } 480 dr.setErrorDrawable(icon, mTextView); 481 482 mTextView.resetResolvedDrawables(); 483 mTextView.invalidate(); 484 mTextView.requestLayout(); 485 } 486 487 private void hideError() { 488 if (mErrorPopup != null) { 489 if (mErrorPopup.isShowing()) { 490 mErrorPopup.dismiss(); 491 } 492 } 493 494 mShowErrorAfterAttach = false; 495 } 496 497 /** 498 * Returns the X offset to make the pointy top of the error point 499 * at the middle of the error icon. 500 */ 501 private int getErrorX() { 502 /* 503 * The "25" is the distance between the point and the right edge 504 * of the background 505 */ 506 final float scale = mTextView.getResources().getDisplayMetrics().density; 507 508 final Drawables dr = mTextView.mDrawables; 509 510 final int layoutDirection = mTextView.getLayoutDirection(); 511 int errorX; 512 int offset; 513 switch (layoutDirection) { 514 default: 515 case View.LAYOUT_DIRECTION_LTR: 516 offset = - (dr != null ? dr.mDrawableSizeRight : 0) / 2 + (int) (25 * scale + 0.5f); 517 errorX = mTextView.getWidth() - mErrorPopup.getWidth() - 518 mTextView.getPaddingRight() + offset; 519 break; 520 case View.LAYOUT_DIRECTION_RTL: 521 offset = (dr != null ? dr.mDrawableSizeLeft : 0) / 2 - (int) (25 * scale + 0.5f); 522 errorX = mTextView.getPaddingLeft() + offset; 523 break; 524 } 525 return errorX; 526 } 527 528 /** 529 * Returns the Y offset to make the pointy top of the error point 530 * at the bottom of the error icon. 531 */ 532 private int getErrorY() { 533 /* 534 * Compound, not extended, because the icon is not clipped 535 * if the text height is smaller. 536 */ 537 final int compoundPaddingTop = mTextView.getCompoundPaddingTop(); 538 int vspace = mTextView.getBottom() - mTextView.getTop() - 539 mTextView.getCompoundPaddingBottom() - compoundPaddingTop; 540 541 final Drawables dr = mTextView.mDrawables; 542 543 final int layoutDirection = mTextView.getLayoutDirection(); 544 int height; 545 switch (layoutDirection) { 546 default: 547 case View.LAYOUT_DIRECTION_LTR: 548 height = (dr != null ? dr.mDrawableHeightRight : 0); 549 break; 550 case View.LAYOUT_DIRECTION_RTL: 551 height = (dr != null ? dr.mDrawableHeightLeft : 0); 552 break; 553 } 554 555 int icontop = compoundPaddingTop + (vspace - height) / 2; 556 557 /* 558 * The "2" is the distance between the point and the top edge 559 * of the background. 560 */ 561 final float scale = mTextView.getResources().getDisplayMetrics().density; 562 return icontop + height - mTextView.getHeight() - (int) (2 * scale + 0.5f); 563 } 564 565 void createInputContentTypeIfNeeded() { 566 if (mInputContentType == null) { 567 mInputContentType = new InputContentType(); 568 } 569 } 570 571 void createInputMethodStateIfNeeded() { 572 if (mInputMethodState == null) { 573 mInputMethodState = new InputMethodState(); 574 } 575 } 576 577 boolean isCursorVisible() { 578 // The default value is true, even when there is no associated Editor 579 return mCursorVisible && mTextView.isTextEditable(); 580 } 581 582 void prepareCursorControllers() { 583 boolean windowSupportsHandles = false; 584 585 ViewGroup.LayoutParams params = mTextView.getRootView().getLayoutParams(); 586 if (params instanceof WindowManager.LayoutParams) { 587 WindowManager.LayoutParams windowParams = (WindowManager.LayoutParams) params; 588 windowSupportsHandles = windowParams.type < WindowManager.LayoutParams.FIRST_SUB_WINDOW 589 || windowParams.type > WindowManager.LayoutParams.LAST_SUB_WINDOW; 590 } 591 592 boolean enabled = windowSupportsHandles && mTextView.getLayout() != null; 593 mInsertionControllerEnabled = enabled && isCursorVisible(); 594 mSelectionControllerEnabled = enabled && mTextView.textCanBeSelected(); 595 596 if (!mInsertionControllerEnabled) { 597 hideInsertionPointCursorController(); 598 if (mInsertionPointCursorController != null) { 599 mInsertionPointCursorController.onDetached(); 600 mInsertionPointCursorController = null; 601 } 602 } 603 604 if (!mSelectionControllerEnabled) { 605 stopTextActionMode(); 606 if (mSelectionModifierCursorController != null) { 607 mSelectionModifierCursorController.onDetached(); 608 mSelectionModifierCursorController = null; 609 } 610 } 611 } 612 613 void hideInsertionPointCursorController() { 614 if (mInsertionPointCursorController != null) { 615 mInsertionPointCursorController.hide(); 616 } 617 } 618 619 /** 620 * Hides the insertion and span controllers. 621 */ 622 void hideCursorAndSpanControllers() { 623 hideCursorControllers(); 624 hideSpanControllers(); 625 } 626 627 private void hideSpanControllers() { 628 if (mSpanController != null) { 629 mSpanController.hide(); 630 } 631 } 632 633 private void hideCursorControllers() { 634 // When mTextView is not ExtractEditText, we need to distinguish two kinds of focus-lost. 635 // One is the true focus lost where suggestions pop-up (if any) should be dismissed, and the 636 // other is an side effect of showing the suggestions pop-up itself. We use isShowingUp() 637 // to distinguish one from the other. 638 if (mSuggestionsPopupWindow != null && ((mTextView.isInExtractedMode()) || 639 !mSuggestionsPopupWindow.isShowingUp())) { 640 // Should be done before hide insertion point controller since it triggers a show of it 641 mSuggestionsPopupWindow.hide(); 642 } 643 hideInsertionPointCursorController(); 644 } 645 646 /** 647 * Create new SpellCheckSpans on the modified region. 648 */ 649 private void updateSpellCheckSpans(int start, int end, boolean createSpellChecker) { 650 // Remove spans whose adjacent characters are text not punctuation 651 mTextView.removeAdjacentSuggestionSpans(start); 652 mTextView.removeAdjacentSuggestionSpans(end); 653 654 if (mTextView.isTextEditable() && mTextView.isSuggestionsEnabled() && 655 !(mTextView.isInExtractedMode())) { 656 if (mSpellChecker == null && createSpellChecker) { 657 mSpellChecker = new SpellChecker(mTextView); 658 } 659 if (mSpellChecker != null) { 660 mSpellChecker.spellCheck(start, end); 661 } 662 } 663 } 664 665 void onScreenStateChanged(int screenState) { 666 switch (screenState) { 667 case View.SCREEN_STATE_ON: 668 resumeBlink(); 669 break; 670 case View.SCREEN_STATE_OFF: 671 suspendBlink(); 672 break; 673 } 674 } 675 676 private void suspendBlink() { 677 if (mBlink != null) { 678 mBlink.cancel(); 679 } 680 } 681 682 private void resumeBlink() { 683 if (mBlink != null) { 684 mBlink.uncancel(); 685 makeBlink(); 686 } 687 } 688 689 void adjustInputType(boolean password, boolean passwordInputType, 690 boolean webPasswordInputType, boolean numberPasswordInputType) { 691 // mInputType has been set from inputType, possibly modified by mInputMethod. 692 // Specialize mInputType to [web]password if we have a text class and the original input 693 // type was a password. 694 if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) { 695 if (password || passwordInputType) { 696 mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) 697 | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD; 698 } 699 if (webPasswordInputType) { 700 mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) 701 | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD; 702 } 703 } else if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_NUMBER) { 704 if (numberPasswordInputType) { 705 mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) 706 | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD; 707 } 708 } 709 } 710 711 private void chooseSize(PopupWindow pop, CharSequence text, TextView tv) { 712 int wid = tv.getPaddingLeft() + tv.getPaddingRight(); 713 int ht = tv.getPaddingTop() + tv.getPaddingBottom(); 714 715 int defaultWidthInPixels = mTextView.getResources().getDimensionPixelSize( 716 com.android.internal.R.dimen.textview_error_popup_default_width); 717 Layout l = new StaticLayout(text, tv.getPaint(), defaultWidthInPixels, 718 Layout.Alignment.ALIGN_NORMAL, 1, 0, true); 719 float max = 0; 720 for (int i = 0; i < l.getLineCount(); i++) { 721 max = Math.max(max, l.getLineWidth(i)); 722 } 723 724 /* 725 * Now set the popup size to be big enough for the text plus the border capped 726 * to DEFAULT_MAX_POPUP_WIDTH 727 */ 728 pop.setWidth(wid + (int) Math.ceil(max)); 729 pop.setHeight(ht + l.getHeight()); 730 } 731 732 void setFrame() { 733 if (mErrorPopup != null) { 734 TextView tv = (TextView) mErrorPopup.getContentView(); 735 chooseSize(mErrorPopup, mError, tv); 736 mErrorPopup.update(mTextView, getErrorX(), getErrorY(), 737 mErrorPopup.getWidth(), mErrorPopup.getHeight()); 738 } 739 } 740 741 private int getWordStart(int offset) { 742 // FIXME - For this and similar methods we're not doing anything to check if there's 743 // a LocaleSpan in the text, this may be something we should try handling or checking for. 744 int retOffset = getWordIteratorWithText().prevBoundary(offset); 745 if (getWordIteratorWithText().isOnPunctuation(retOffset)) { 746 // On punctuation boundary or within group of punctuation, find punctuation start. 747 retOffset = getWordIteratorWithText().getPunctuationBeginning(offset); 748 } else { 749 // Not on a punctuation boundary, find the word start. 750 retOffset = getWordIteratorWithText().getPrevWordBeginningOnTwoWordsBoundary(offset); 751 } 752 if (retOffset == BreakIterator.DONE) { 753 return offset; 754 } 755 return retOffset; 756 } 757 758 private int getWordEnd(int offset) { 759 int retOffset = getWordIteratorWithText().nextBoundary(offset); 760 if (getWordIteratorWithText().isAfterPunctuation(retOffset)) { 761 // On punctuation boundary or within group of punctuation, find punctuation end. 762 retOffset = getWordIteratorWithText().getPunctuationEnd(offset); 763 } else { 764 // Not on a punctuation boundary, find the word end. 765 retOffset = getWordIteratorWithText().getNextWordEndOnTwoWordBoundary(offset); 766 } 767 if (retOffset == BreakIterator.DONE) { 768 return offset; 769 } 770 return retOffset; 771 } 772 773 /** 774 * Adjusts selection to the word under last touch offset. Return true if the operation was 775 * successfully performed. 776 */ 777 private boolean selectCurrentWord() { 778 if (!mTextView.canSelectText()) { 779 return false; 780 } 781 782 if (mTextView.hasPasswordTransformationMethod()) { 783 // Always select all on a password field. 784 // Cut/copy menu entries are not available for passwords, but being able to select all 785 // is however useful to delete or paste to replace the entire content. 786 return mTextView.selectAllText(); 787 } 788 789 int inputType = mTextView.getInputType(); 790 int klass = inputType & InputType.TYPE_MASK_CLASS; 791 int variation = inputType & InputType.TYPE_MASK_VARIATION; 792 793 // Specific text field types: select the entire text for these 794 if (klass == InputType.TYPE_CLASS_NUMBER || 795 klass == InputType.TYPE_CLASS_PHONE || 796 klass == InputType.TYPE_CLASS_DATETIME || 797 variation == InputType.TYPE_TEXT_VARIATION_URI || 798 variation == InputType.TYPE_TEXT_VARIATION_EMAIL_ADDRESS || 799 variation == InputType.TYPE_TEXT_VARIATION_WEB_EMAIL_ADDRESS || 800 variation == InputType.TYPE_TEXT_VARIATION_FILTER) { 801 return mTextView.selectAllText(); 802 } 803 804 long lastTouchOffsets = getLastTouchOffsets(); 805 final int minOffset = TextUtils.unpackRangeStartFromLong(lastTouchOffsets); 806 final int maxOffset = TextUtils.unpackRangeEndFromLong(lastTouchOffsets); 807 808 // Safety check in case standard touch event handling has been bypassed 809 if (minOffset < 0 || minOffset > mTextView.getText().length()) return false; 810 if (maxOffset < 0 || maxOffset > mTextView.getText().length()) return false; 811 812 int selectionStart, selectionEnd; 813 814 // If a URLSpan (web address, email, phone...) is found at that position, select it. 815 URLSpan[] urlSpans = ((Spanned) mTextView.getText()). 816 getSpans(minOffset, maxOffset, URLSpan.class); 817 if (urlSpans.length >= 1) { 818 URLSpan urlSpan = urlSpans[0]; 819 selectionStart = ((Spanned) mTextView.getText()).getSpanStart(urlSpan); 820 selectionEnd = ((Spanned) mTextView.getText()).getSpanEnd(urlSpan); 821 } else { 822 // FIXME - We should check if there's a LocaleSpan in the text, this may be 823 // something we should try handling or checking for. 824 final WordIterator wordIterator = getWordIterator(); 825 wordIterator.setCharSequence(mTextView.getText(), minOffset, maxOffset); 826 827 selectionStart = wordIterator.getBeginning(minOffset); 828 selectionEnd = wordIterator.getEnd(maxOffset); 829 830 if (selectionStart == BreakIterator.DONE || selectionEnd == BreakIterator.DONE || 831 selectionStart == selectionEnd) { 832 // Possible when the word iterator does not properly handle the text's language 833 long range = getCharClusterRange(minOffset); 834 selectionStart = TextUtils.unpackRangeStartFromLong(range); 835 selectionEnd = TextUtils.unpackRangeEndFromLong(range); 836 } 837 } 838 839 Selection.setSelection((Spannable) mTextView.getText(), selectionStart, selectionEnd); 840 return selectionEnd > selectionStart; 841 } 842 843 void onLocaleChanged() { 844 // Will be re-created on demand in getWordIterator with the proper new locale 845 mWordIterator = null; 846 mWordIteratorWithText = null; 847 } 848 849 /** 850 * @hide 851 */ 852 public WordIterator getWordIterator() { 853 if (mWordIterator == null) { 854 mWordIterator = new WordIterator(mTextView.getTextServicesLocale()); 855 } 856 return mWordIterator; 857 } 858 859 private WordIterator getWordIteratorWithText() { 860 if (mWordIteratorWithText == null) { 861 mWordIteratorWithText = new WordIterator(mTextView.getTextServicesLocale()); 862 mUpdateWordIteratorText = true; 863 } 864 if (mUpdateWordIteratorText) { 865 // FIXME - Shouldn't copy all of the text as only the area of the text relevant 866 // to the user's selection is needed. A possible solution would be to 867 // copy some number N of characters near the selection and then when the 868 // user approaches N then we'd do another copy of the next N characters. 869 CharSequence text = mTextView.getText(); 870 mWordIteratorWithText.setCharSequence(text, 0, text.length()); 871 mUpdateWordIteratorText = false; 872 } 873 return mWordIteratorWithText; 874 } 875 876 private int getNextCursorOffset(int offset, boolean findAfterGivenOffset) { 877 final Layout layout = mTextView.getLayout(); 878 if (layout == null) return offset; 879 final CharSequence text = mTextView.getText(); 880 final int nextOffset = layout.getPaint().getTextRunCursor(text, 0, text.length(), 881 layout.isRtlCharAt(offset) ? Paint.DIRECTION_RTL : Paint.DIRECTION_LTR, 882 offset, findAfterGivenOffset ? Paint.CURSOR_AFTER : Paint.CURSOR_BEFORE); 883 return nextOffset == -1 ? offset : nextOffset; 884 } 885 886 private long getCharClusterRange(int offset) { 887 final int textLength = mTextView.getText().length(); 888 if (offset < textLength) { 889 return TextUtils.packRangeInLong(offset, getNextCursorOffset(offset, true)); 890 } 891 if (offset - 1 >= 0) { 892 return TextUtils.packRangeInLong(getNextCursorOffset(offset, false), offset); 893 } 894 return TextUtils.packRangeInLong(offset, offset); 895 } 896 897 private boolean touchPositionIsInSelection() { 898 int selectionStart = mTextView.getSelectionStart(); 899 int selectionEnd = mTextView.getSelectionEnd(); 900 901 if (selectionStart == selectionEnd) { 902 return false; 903 } 904 905 if (selectionStart > selectionEnd) { 906 int tmp = selectionStart; 907 selectionStart = selectionEnd; 908 selectionEnd = tmp; 909 Selection.setSelection((Spannable) mTextView.getText(), selectionStart, selectionEnd); 910 } 911 912 SelectionModifierCursorController selectionController = getSelectionController(); 913 int minOffset = selectionController.getMinTouchOffset(); 914 int maxOffset = selectionController.getMaxTouchOffset(); 915 916 return ((minOffset >= selectionStart) && (maxOffset < selectionEnd)); 917 } 918 919 private PositionListener getPositionListener() { 920 if (mPositionListener == null) { 921 mPositionListener = new PositionListener(); 922 } 923 return mPositionListener; 924 } 925 926 private interface TextViewPositionListener { 927 public void updatePosition(int parentPositionX, int parentPositionY, 928 boolean parentPositionChanged, boolean parentScrolled); 929 } 930 931 private boolean isPositionVisible(final float positionX, final float positionY) { 932 synchronized (TEMP_POSITION) { 933 final float[] position = TEMP_POSITION; 934 position[0] = positionX; 935 position[1] = positionY; 936 View view = mTextView; 937 938 while (view != null) { 939 if (view != mTextView) { 940 // Local scroll is already taken into account in positionX/Y 941 position[0] -= view.getScrollX(); 942 position[1] -= view.getScrollY(); 943 } 944 945 if (position[0] < 0 || position[1] < 0 || 946 position[0] > view.getWidth() || position[1] > view.getHeight()) { 947 return false; 948 } 949 950 if (!view.getMatrix().isIdentity()) { 951 view.getMatrix().mapPoints(position); 952 } 953 954 position[0] += view.getLeft(); 955 position[1] += view.getTop(); 956 957 final ViewParent parent = view.getParent(); 958 if (parent instanceof View) { 959 view = (View) parent; 960 } else { 961 // We've reached the ViewRoot, stop iterating 962 view = null; 963 } 964 } 965 } 966 967 // We've been able to walk up the view hierarchy and the position was never clipped 968 return true; 969 } 970 971 private boolean isOffsetVisible(int offset) { 972 Layout layout = mTextView.getLayout(); 973 if (layout == null) return false; 974 975 final int line = layout.getLineForOffset(offset); 976 final int lineBottom = layout.getLineBottom(line); 977 final int primaryHorizontal = (int) layout.getPrimaryHorizontal(offset); 978 return isPositionVisible(primaryHorizontal + mTextView.viewportToContentHorizontalOffset(), 979 lineBottom + mTextView.viewportToContentVerticalOffset()); 980 } 981 982 /** Returns true if the screen coordinates position (x,y) corresponds to a character displayed 983 * in the view. Returns false when the position is in the empty space of left/right of text. 984 */ 985 private boolean isPositionOnText(float x, float y) { 986 Layout layout = mTextView.getLayout(); 987 if (layout == null) return false; 988 989 final int line = mTextView.getLineAtCoordinate(y); 990 x = mTextView.convertToLocalHorizontalCoordinate(x); 991 992 if (x < layout.getLineLeft(line)) return false; 993 if (x > layout.getLineRight(line)) return false; 994 return true; 995 } 996 997 public boolean performLongClick(boolean handled) { 998 // Long press in empty space moves cursor and starts the insertion action mode. 999 if (!handled && !isPositionOnText(mLastDownPositionX, mLastDownPositionY) && 1000 mInsertionControllerEnabled) { 1001 final int offset = mTextView.getOffsetForPosition(mLastDownPositionX, 1002 mLastDownPositionY); 1003 stopTextActionMode(); 1004 Selection.setSelection((Spannable) mTextView.getText(), offset); 1005 getInsertionController().show(); 1006 mIsInsertionActionModeStartPending = true; 1007 handled = true; 1008 } 1009 1010 if (!handled && mTextActionMode != null) { 1011 if (touchPositionIsInSelection()) { 1012 // Start a drag 1013 final int start = mTextView.getSelectionStart(); 1014 final int end = mTextView.getSelectionEnd(); 1015 CharSequence selectedText = mTextView.getTransformedText(start, end); 1016 ClipData data = ClipData.newPlainText(null, selectedText); 1017 DragLocalState localState = new DragLocalState(mTextView, start, end); 1018 mTextView.startDrag(data, getTextThumbnailBuilder(selectedText), localState, 1019 View.DRAG_FLAG_GLOBAL); 1020 stopTextActionMode(); 1021 } else { 1022 stopTextActionMode(); 1023 selectCurrentWordAndStartDrag(); 1024 } 1025 handled = true; 1026 } 1027 1028 // Start a new selection 1029 if (!handled) { 1030 handled = selectCurrentWordAndStartDrag(); 1031 } 1032 1033 return handled; 1034 } 1035 1036 private long getLastTouchOffsets() { 1037 SelectionModifierCursorController selectionController = getSelectionController(); 1038 final int minOffset = selectionController.getMinTouchOffset(); 1039 final int maxOffset = selectionController.getMaxTouchOffset(); 1040 return TextUtils.packRangeInLong(minOffset, maxOffset); 1041 } 1042 1043 void onFocusChanged(boolean focused, int direction) { 1044 mShowCursor = SystemClock.uptimeMillis(); 1045 ensureEndedBatchEdit(); 1046 1047 if (focused) { 1048 int selStart = mTextView.getSelectionStart(); 1049 int selEnd = mTextView.getSelectionEnd(); 1050 1051 // SelectAllOnFocus fields are highlighted and not selected. Do not start text selection 1052 // mode for these, unless there was a specific selection already started. 1053 final boolean isFocusHighlighted = mSelectAllOnFocus && selStart == 0 && 1054 selEnd == mTextView.getText().length(); 1055 1056 mCreatedWithASelection = mFrozenWithFocus && mTextView.hasSelection() && 1057 !isFocusHighlighted; 1058 1059 if (!mFrozenWithFocus || (selStart < 0 || selEnd < 0)) { 1060 // If a tap was used to give focus to that view, move cursor at tap position. 1061 // Has to be done before onTakeFocus, which can be overloaded. 1062 final int lastTapPosition = getLastTapPosition(); 1063 if (lastTapPosition >= 0) { 1064 Selection.setSelection((Spannable) mTextView.getText(), lastTapPosition); 1065 } 1066 1067 // Note this may have to be moved out of the Editor class 1068 MovementMethod mMovement = mTextView.getMovementMethod(); 1069 if (mMovement != null) { 1070 mMovement.onTakeFocus(mTextView, (Spannable) mTextView.getText(), direction); 1071 } 1072 1073 // The DecorView does not have focus when the 'Done' ExtractEditText button is 1074 // pressed. Since it is the ViewAncestor's mView, it requests focus before 1075 // ExtractEditText clears focus, which gives focus to the ExtractEditText. 1076 // This special case ensure that we keep current selection in that case. 1077 // It would be better to know why the DecorView does not have focus at that time. 1078 if (((mTextView.isInExtractedMode()) || mSelectionMoved) && 1079 selStart >= 0 && selEnd >= 0) { 1080 /* 1081 * Someone intentionally set the selection, so let them 1082 * do whatever it is that they wanted to do instead of 1083 * the default on-focus behavior. We reset the selection 1084 * here instead of just skipping the onTakeFocus() call 1085 * because some movement methods do something other than 1086 * just setting the selection in theirs and we still 1087 * need to go through that path. 1088 */ 1089 Selection.setSelection((Spannable) mTextView.getText(), selStart, selEnd); 1090 } 1091 1092 if (mSelectAllOnFocus) { 1093 mTextView.selectAllText(); 1094 } 1095 1096 mTouchFocusSelected = true; 1097 } 1098 1099 mFrozenWithFocus = false; 1100 mSelectionMoved = false; 1101 1102 if (mError != null) { 1103 showError(); 1104 } 1105 1106 makeBlink(); 1107 } else { 1108 if (mError != null) { 1109 hideError(); 1110 } 1111 // Don't leave us in the middle of a batch edit. 1112 mTextView.onEndBatchEdit(); 1113 1114 if (mTextView.isInExtractedMode()) { 1115 // terminateTextSelectionMode removes selection, which we want to keep when 1116 // ExtractEditText goes out of focus. 1117 final int selStart = mTextView.getSelectionStart(); 1118 final int selEnd = mTextView.getSelectionEnd(); 1119 hideCursorAndSpanControllers(); 1120 stopTextActionMode(); 1121 Selection.setSelection((Spannable) mTextView.getText(), selStart, selEnd); 1122 } else { 1123 if (mTemporaryDetach) mPreserveDetachedSelection = true; 1124 hideCursorAndSpanControllers(); 1125 stopTextActionMode(); 1126 if (mTemporaryDetach) mPreserveDetachedSelection = false; 1127 downgradeEasyCorrectionSpans(); 1128 } 1129 // No need to create the controller 1130 if (mSelectionModifierCursorController != null) { 1131 mSelectionModifierCursorController.resetTouchOffsets(); 1132 } 1133 } 1134 } 1135 1136 /** 1137 * Downgrades to simple suggestions all the easy correction spans that are not a spell check 1138 * span. 1139 */ 1140 private void downgradeEasyCorrectionSpans() { 1141 CharSequence text = mTextView.getText(); 1142 if (text instanceof Spannable) { 1143 Spannable spannable = (Spannable) text; 1144 SuggestionSpan[] suggestionSpans = spannable.getSpans(0, 1145 spannable.length(), SuggestionSpan.class); 1146 for (int i = 0; i < suggestionSpans.length; i++) { 1147 int flags = suggestionSpans[i].getFlags(); 1148 if ((flags & SuggestionSpan.FLAG_EASY_CORRECT) != 0 1149 && (flags & SuggestionSpan.FLAG_MISSPELLED) == 0) { 1150 flags &= ~SuggestionSpan.FLAG_EASY_CORRECT; 1151 suggestionSpans[i].setFlags(flags); 1152 } 1153 } 1154 } 1155 } 1156 1157 void sendOnTextChanged(int start, int after) { 1158 updateSpellCheckSpans(start, start + after, false); 1159 1160 // Flip flag to indicate the word iterator needs to have the text reset. 1161 mUpdateWordIteratorText = true; 1162 1163 // Hide the controllers as soon as text is modified (typing, procedural...) 1164 // We do not hide the span controllers, since they can be added when a new text is 1165 // inserted into the text view (voice IME). 1166 hideCursorControllers(); 1167 // Reset drag accelerator. 1168 if (mSelectionModifierCursorController != null) { 1169 mSelectionModifierCursorController.resetTouchOffsets(); 1170 } 1171 stopTextActionMode(); 1172 } 1173 1174 private int getLastTapPosition() { 1175 // No need to create the controller at that point, no last tap position saved 1176 if (mSelectionModifierCursorController != null) { 1177 int lastTapPosition = mSelectionModifierCursorController.getMinTouchOffset(); 1178 if (lastTapPosition >= 0) { 1179 // Safety check, should not be possible. 1180 if (lastTapPosition > mTextView.getText().length()) { 1181 lastTapPosition = mTextView.getText().length(); 1182 } 1183 return lastTapPosition; 1184 } 1185 } 1186 1187 return -1; 1188 } 1189 1190 void onWindowFocusChanged(boolean hasWindowFocus) { 1191 if (hasWindowFocus) { 1192 if (mBlink != null) { 1193 mBlink.uncancel(); 1194 makeBlink(); 1195 } 1196 final InputMethodManager imm = InputMethodManager.peekInstance(); 1197 final boolean immFullScreen = (imm != null && imm.isFullscreenMode()); 1198 if (mSelectionModifierCursorController != null && mTextView.hasSelection() 1199 && !immFullScreen && mTextActionMode != null) { 1200 mSelectionModifierCursorController.show(); 1201 } 1202 } else { 1203 if (mBlink != null) { 1204 mBlink.cancel(); 1205 } 1206 if (mInputContentType != null) { 1207 mInputContentType.enterDown = false; 1208 } 1209 // Order matters! Must be done before onParentLostFocus to rely on isShowingUp 1210 hideCursorAndSpanControllers(); 1211 if (mSelectionModifierCursorController != null) { 1212 mSelectionModifierCursorController.hide(); 1213 } 1214 if (mSuggestionsPopupWindow != null) { 1215 mSuggestionsPopupWindow.onParentLostFocus(); 1216 } 1217 1218 // Don't leave us in the middle of a batch edit. Same as in onFocusChanged 1219 ensureEndedBatchEdit(); 1220 } 1221 } 1222 1223 void onTouchEvent(MotionEvent event) { 1224 updateFloatingToolbarVisibility(event); 1225 1226 if (hasSelectionController()) { 1227 getSelectionController().onTouchEvent(event); 1228 } 1229 1230 if (mShowSuggestionRunnable != null) { 1231 mTextView.removeCallbacks(mShowSuggestionRunnable); 1232 mShowSuggestionRunnable = null; 1233 } 1234 1235 if (event.getActionMasked() == MotionEvent.ACTION_DOWN) { 1236 mLastDownPositionX = event.getX(); 1237 mLastDownPositionY = event.getY(); 1238 1239 // Reset this state; it will be re-set if super.onTouchEvent 1240 // causes focus to move to the view. 1241 mTouchFocusSelected = false; 1242 mIgnoreActionUpEvent = false; 1243 } 1244 } 1245 1246 private void updateFloatingToolbarVisibility(MotionEvent event) { 1247 if (mTextActionMode != null) { 1248 switch (event.getActionMasked()) { 1249 case MotionEvent.ACTION_MOVE: 1250 hideFloatingToolbar(); 1251 break; 1252 case MotionEvent.ACTION_UP: // fall through 1253 case MotionEvent.ACTION_CANCEL: 1254 showFloatingToolbar(); 1255 } 1256 } 1257 } 1258 1259 private void hideFloatingToolbar() { 1260 if (mTextActionMode != null) { 1261 mTextView.removeCallbacks(mShowFloatingToolbar); 1262 mTextActionMode.hide(ActionMode.DEFAULT_HIDE_DURATION); 1263 } 1264 } 1265 1266 private void showFloatingToolbar() { 1267 if (mTextActionMode != null) { 1268 // Delay "show" so it doesn't interfere with click confirmations 1269 // or double-clicks that could "dismiss" the floating toolbar. 1270 int delay = ViewConfiguration.getDoubleTapTimeout(); 1271 mTextView.postDelayed(mShowFloatingToolbar, delay); 1272 } 1273 } 1274 1275 public void beginBatchEdit() { 1276 mInBatchEditControllers = true; 1277 final InputMethodState ims = mInputMethodState; 1278 if (ims != null) { 1279 int nesting = ++ims.mBatchEditNesting; 1280 if (nesting == 1) { 1281 ims.mCursorChanged = false; 1282 ims.mChangedDelta = 0; 1283 if (ims.mContentChanged) { 1284 // We already have a pending change from somewhere else, 1285 // so turn this into a full update. 1286 ims.mChangedStart = 0; 1287 ims.mChangedEnd = mTextView.getText().length(); 1288 } else { 1289 ims.mChangedStart = EXTRACT_UNKNOWN; 1290 ims.mChangedEnd = EXTRACT_UNKNOWN; 1291 ims.mContentChanged = false; 1292 } 1293 mUndoInputFilter.beginBatchEdit(); 1294 mTextView.onBeginBatchEdit(); 1295 } 1296 } 1297 } 1298 1299 public void endBatchEdit() { 1300 mInBatchEditControllers = false; 1301 final InputMethodState ims = mInputMethodState; 1302 if (ims != null) { 1303 int nesting = --ims.mBatchEditNesting; 1304 if (nesting == 0) { 1305 finishBatchEdit(ims); 1306 } 1307 } 1308 } 1309 1310 void ensureEndedBatchEdit() { 1311 final InputMethodState ims = mInputMethodState; 1312 if (ims != null && ims.mBatchEditNesting != 0) { 1313 ims.mBatchEditNesting = 0; 1314 finishBatchEdit(ims); 1315 } 1316 } 1317 1318 void finishBatchEdit(final InputMethodState ims) { 1319 mTextView.onEndBatchEdit(); 1320 mUndoInputFilter.endBatchEdit(); 1321 1322 if (ims.mContentChanged || ims.mSelectionModeChanged) { 1323 mTextView.updateAfterEdit(); 1324 reportExtractedText(); 1325 } else if (ims.mCursorChanged) { 1326 // Cheesy way to get us to report the current cursor location. 1327 mTextView.invalidateCursor(); 1328 } 1329 // sendUpdateSelection knows to avoid sending if the selection did 1330 // not actually change. 1331 sendUpdateSelection(); 1332 } 1333 1334 static final int EXTRACT_NOTHING = -2; 1335 static final int EXTRACT_UNKNOWN = -1; 1336 1337 boolean extractText(ExtractedTextRequest request, ExtractedText outText) { 1338 return extractTextInternal(request, EXTRACT_UNKNOWN, EXTRACT_UNKNOWN, 1339 EXTRACT_UNKNOWN, outText); 1340 } 1341 1342 private boolean extractTextInternal(@Nullable ExtractedTextRequest request, 1343 int partialStartOffset, int partialEndOffset, int delta, 1344 @Nullable ExtractedText outText) { 1345 if (request == null || outText == null) { 1346 return false; 1347 } 1348 1349 final CharSequence content = mTextView.getText(); 1350 if (content == null) { 1351 return false; 1352 } 1353 1354 if (partialStartOffset != EXTRACT_NOTHING) { 1355 final int N = content.length(); 1356 if (partialStartOffset < 0) { 1357 outText.partialStartOffset = outText.partialEndOffset = -1; 1358 partialStartOffset = 0; 1359 partialEndOffset = N; 1360 } else { 1361 // Now use the delta to determine the actual amount of text 1362 // we need. 1363 partialEndOffset += delta; 1364 // Adjust offsets to ensure we contain full spans. 1365 if (content instanceof Spanned) { 1366 Spanned spanned = (Spanned)content; 1367 Object[] spans = spanned.getSpans(partialStartOffset, 1368 partialEndOffset, ParcelableSpan.class); 1369 int i = spans.length; 1370 while (i > 0) { 1371 i--; 1372 int j = spanned.getSpanStart(spans[i]); 1373 if (j < partialStartOffset) partialStartOffset = j; 1374 j = spanned.getSpanEnd(spans[i]); 1375 if (j > partialEndOffset) partialEndOffset = j; 1376 } 1377 } 1378 outText.partialStartOffset = partialStartOffset; 1379 outText.partialEndOffset = partialEndOffset - delta; 1380 1381 if (partialStartOffset > N) { 1382 partialStartOffset = N; 1383 } else if (partialStartOffset < 0) { 1384 partialStartOffset = 0; 1385 } 1386 if (partialEndOffset > N) { 1387 partialEndOffset = N; 1388 } else if (partialEndOffset < 0) { 1389 partialEndOffset = 0; 1390 } 1391 } 1392 if ((request.flags&InputConnection.GET_TEXT_WITH_STYLES) != 0) { 1393 outText.text = content.subSequence(partialStartOffset, 1394 partialEndOffset); 1395 } else { 1396 outText.text = TextUtils.substring(content, partialStartOffset, 1397 partialEndOffset); 1398 } 1399 } else { 1400 outText.partialStartOffset = 0; 1401 outText.partialEndOffset = 0; 1402 outText.text = ""; 1403 } 1404 outText.flags = 0; 1405 if (MetaKeyKeyListener.getMetaState(content, MetaKeyKeyListener.META_SELECTING) != 0) { 1406 outText.flags |= ExtractedText.FLAG_SELECTING; 1407 } 1408 if (mTextView.isSingleLine()) { 1409 outText.flags |= ExtractedText.FLAG_SINGLE_LINE; 1410 } 1411 outText.startOffset = 0; 1412 outText.selectionStart = mTextView.getSelectionStart(); 1413 outText.selectionEnd = mTextView.getSelectionEnd(); 1414 return true; 1415 } 1416 1417 boolean reportExtractedText() { 1418 final Editor.InputMethodState ims = mInputMethodState; 1419 if (ims != null) { 1420 final boolean contentChanged = ims.mContentChanged; 1421 if (contentChanged || ims.mSelectionModeChanged) { 1422 ims.mContentChanged = false; 1423 ims.mSelectionModeChanged = false; 1424 final ExtractedTextRequest req = ims.mExtractedTextRequest; 1425 if (req != null) { 1426 InputMethodManager imm = InputMethodManager.peekInstance(); 1427 if (imm != null) { 1428 if (TextView.DEBUG_EXTRACT) Log.v(TextView.LOG_TAG, 1429 "Retrieving extracted start=" + ims.mChangedStart + 1430 " end=" + ims.mChangedEnd + 1431 " delta=" + ims.mChangedDelta); 1432 if (ims.mChangedStart < 0 && !contentChanged) { 1433 ims.mChangedStart = EXTRACT_NOTHING; 1434 } 1435 if (extractTextInternal(req, ims.mChangedStart, ims.mChangedEnd, 1436 ims.mChangedDelta, ims.mExtractedText)) { 1437 if (TextView.DEBUG_EXTRACT) Log.v(TextView.LOG_TAG, 1438 "Reporting extracted start=" + 1439 ims.mExtractedText.partialStartOffset + 1440 " end=" + ims.mExtractedText.partialEndOffset + 1441 ": " + ims.mExtractedText.text); 1442 1443 imm.updateExtractedText(mTextView, req.token, ims.mExtractedText); 1444 ims.mChangedStart = EXTRACT_UNKNOWN; 1445 ims.mChangedEnd = EXTRACT_UNKNOWN; 1446 ims.mChangedDelta = 0; 1447 ims.mContentChanged = false; 1448 return true; 1449 } 1450 } 1451 } 1452 } 1453 } 1454 return false; 1455 } 1456 1457 private void sendUpdateSelection() { 1458 if (null != mInputMethodState && mInputMethodState.mBatchEditNesting <= 0) { 1459 final InputMethodManager imm = InputMethodManager.peekInstance(); 1460 if (null != imm) { 1461 final int selectionStart = mTextView.getSelectionStart(); 1462 final int selectionEnd = mTextView.getSelectionEnd(); 1463 int candStart = -1; 1464 int candEnd = -1; 1465 if (mTextView.getText() instanceof Spannable) { 1466 final Spannable sp = (Spannable) mTextView.getText(); 1467 candStart = EditableInputConnection.getComposingSpanStart(sp); 1468 candEnd = EditableInputConnection.getComposingSpanEnd(sp); 1469 } 1470 // InputMethodManager#updateSelection skips sending the message if 1471 // none of the parameters have changed since the last time we called it. 1472 imm.updateSelection(mTextView, 1473 selectionStart, selectionEnd, candStart, candEnd); 1474 } 1475 } 1476 } 1477 1478 void onDraw(Canvas canvas, Layout layout, Path highlight, Paint highlightPaint, 1479 int cursorOffsetVertical) { 1480 final int selectionStart = mTextView.getSelectionStart(); 1481 final int selectionEnd = mTextView.getSelectionEnd(); 1482 1483 final InputMethodState ims = mInputMethodState; 1484 if (ims != null && ims.mBatchEditNesting == 0) { 1485 InputMethodManager imm = InputMethodManager.peekInstance(); 1486 if (imm != null) { 1487 if (imm.isActive(mTextView)) { 1488 if (ims.mContentChanged || ims.mSelectionModeChanged) { 1489 // We are in extract mode and the content has changed 1490 // in some way... just report complete new text to the 1491 // input method. 1492 reportExtractedText(); 1493 } 1494 } 1495 } 1496 } 1497 1498 if (mCorrectionHighlighter != null) { 1499 mCorrectionHighlighter.draw(canvas, cursorOffsetVertical); 1500 } 1501 1502 if (highlight != null && selectionStart == selectionEnd && mCursorCount > 0) { 1503 drawCursor(canvas, cursorOffsetVertical); 1504 // Rely on the drawable entirely, do not draw the cursor line. 1505 // Has to be done after the IMM related code above which relies on the highlight. 1506 highlight = null; 1507 } 1508 1509 if (mTextView.canHaveDisplayList() && canvas.isHardwareAccelerated()) { 1510 drawHardwareAccelerated(canvas, layout, highlight, highlightPaint, 1511 cursorOffsetVertical); 1512 } else { 1513 layout.draw(canvas, highlight, highlightPaint, cursorOffsetVertical); 1514 } 1515 } 1516 1517 private void drawHardwareAccelerated(Canvas canvas, Layout layout, Path highlight, 1518 Paint highlightPaint, int cursorOffsetVertical) { 1519 final long lineRange = layout.getLineRangeForDraw(canvas); 1520 int firstLine = TextUtils.unpackRangeStartFromLong(lineRange); 1521 int lastLine = TextUtils.unpackRangeEndFromLong(lineRange); 1522 if (lastLine < 0) return; 1523 1524 layout.drawBackground(canvas, highlight, highlightPaint, cursorOffsetVertical, 1525 firstLine, lastLine); 1526 1527 if (layout instanceof DynamicLayout) { 1528 if (mTextRenderNodes == null) { 1529 mTextRenderNodes = ArrayUtils.emptyArray(TextRenderNode.class); 1530 } 1531 1532 DynamicLayout dynamicLayout = (DynamicLayout) layout; 1533 int[] blockEndLines = dynamicLayout.getBlockEndLines(); 1534 int[] blockIndices = dynamicLayout.getBlockIndices(); 1535 final int numberOfBlocks = dynamicLayout.getNumberOfBlocks(); 1536 final int indexFirstChangedBlock = dynamicLayout.getIndexFirstChangedBlock(); 1537 1538 int endOfPreviousBlock = -1; 1539 int searchStartIndex = 0; 1540 for (int i = 0; i < numberOfBlocks; i++) { 1541 int blockEndLine = blockEndLines[i]; 1542 int blockIndex = blockIndices[i]; 1543 1544 final boolean blockIsInvalid = blockIndex == DynamicLayout.INVALID_BLOCK_INDEX; 1545 if (blockIsInvalid) { 1546 blockIndex = getAvailableDisplayListIndex(blockIndices, numberOfBlocks, 1547 searchStartIndex); 1548 // Note how dynamic layout's internal block indices get updated from Editor 1549 blockIndices[i] = blockIndex; 1550 if (mTextRenderNodes[blockIndex] != null) { 1551 mTextRenderNodes[blockIndex].isDirty = true; 1552 } 1553 searchStartIndex = blockIndex + 1; 1554 } 1555 1556 if (mTextRenderNodes[blockIndex] == null) { 1557 mTextRenderNodes[blockIndex] = 1558 new TextRenderNode("Text " + blockIndex); 1559 } 1560 1561 final boolean blockDisplayListIsInvalid = mTextRenderNodes[blockIndex].needsRecord(); 1562 RenderNode blockDisplayList = mTextRenderNodes[blockIndex].renderNode; 1563 if (i >= indexFirstChangedBlock || blockDisplayListIsInvalid) { 1564 final int blockBeginLine = endOfPreviousBlock + 1; 1565 final int top = layout.getLineTop(blockBeginLine); 1566 final int bottom = layout.getLineBottom(blockEndLine); 1567 int left = 0; 1568 int right = mTextView.getWidth(); 1569 if (mTextView.getHorizontallyScrolling()) { 1570 float min = Float.MAX_VALUE; 1571 float max = Float.MIN_VALUE; 1572 for (int line = blockBeginLine; line <= blockEndLine; line++) { 1573 min = Math.min(min, layout.getLineLeft(line)); 1574 max = Math.max(max, layout.getLineRight(line)); 1575 } 1576 left = (int) min; 1577 right = (int) (max + 0.5f); 1578 } 1579 1580 // Rebuild display list if it is invalid 1581 if (blockDisplayListIsInvalid) { 1582 final DisplayListCanvas displayListCanvas = blockDisplayList.start( 1583 right - left, bottom - top); 1584 try { 1585 // drawText is always relative to TextView's origin, this translation 1586 // brings this range of text back to the top left corner of the viewport 1587 displayListCanvas.translate(-left, -top); 1588 layout.drawText(displayListCanvas, blockBeginLine, blockEndLine); 1589 mTextRenderNodes[blockIndex].isDirty = false; 1590 // No need to untranslate, previous context is popped after 1591 // drawDisplayList 1592 } finally { 1593 blockDisplayList.end(displayListCanvas); 1594 // Same as drawDisplayList below, handled by our TextView's parent 1595 blockDisplayList.setClipToBounds(false); 1596 } 1597 } 1598 1599 // Valid disply list whose index is >= indexFirstChangedBlock 1600 // only needs to update its drawing location. 1601 blockDisplayList.setLeftTopRightBottom(left, top, right, bottom); 1602 } 1603 1604 ((DisplayListCanvas) canvas).drawRenderNode(blockDisplayList); 1605 1606 endOfPreviousBlock = blockEndLine; 1607 } 1608 1609 dynamicLayout.setIndexFirstChangedBlock(numberOfBlocks); 1610 } else { 1611 // Boring layout is used for empty and hint text 1612 layout.drawText(canvas, firstLine, lastLine); 1613 } 1614 } 1615 1616 private int getAvailableDisplayListIndex(int[] blockIndices, int numberOfBlocks, 1617 int searchStartIndex) { 1618 int length = mTextRenderNodes.length; 1619 for (int i = searchStartIndex; i < length; i++) { 1620 boolean blockIndexFound = false; 1621 for (int j = 0; j < numberOfBlocks; j++) { 1622 if (blockIndices[j] == i) { 1623 blockIndexFound = true; 1624 break; 1625 } 1626 } 1627 if (blockIndexFound) continue; 1628 return i; 1629 } 1630 1631 // No available index found, the pool has to grow 1632 mTextRenderNodes = GrowingArrayUtils.append(mTextRenderNodes, length, null); 1633 return length; 1634 } 1635 1636 private void drawCursor(Canvas canvas, int cursorOffsetVertical) { 1637 final boolean translate = cursorOffsetVertical != 0; 1638 if (translate) canvas.translate(0, cursorOffsetVertical); 1639 for (int i = 0; i < mCursorCount; i++) { 1640 mCursorDrawable[i].draw(canvas); 1641 } 1642 if (translate) canvas.translate(0, -cursorOffsetVertical); 1643 } 1644 1645 /** 1646 * Invalidates all the sub-display lists that overlap the specified character range 1647 */ 1648 void invalidateTextDisplayList(Layout layout, int start, int end) { 1649 if (mTextRenderNodes != null && layout instanceof DynamicLayout) { 1650 final int firstLine = layout.getLineForOffset(start); 1651 final int lastLine = layout.getLineForOffset(end); 1652 1653 DynamicLayout dynamicLayout = (DynamicLayout) layout; 1654 int[] blockEndLines = dynamicLayout.getBlockEndLines(); 1655 int[] blockIndices = dynamicLayout.getBlockIndices(); 1656 final int numberOfBlocks = dynamicLayout.getNumberOfBlocks(); 1657 1658 int i = 0; 1659 // Skip the blocks before firstLine 1660 while (i < numberOfBlocks) { 1661 if (blockEndLines[i] >= firstLine) break; 1662 i++; 1663 } 1664 1665 // Invalidate all subsequent blocks until lastLine is passed 1666 while (i < numberOfBlocks) { 1667 final int blockIndex = blockIndices[i]; 1668 if (blockIndex != DynamicLayout.INVALID_BLOCK_INDEX) { 1669 mTextRenderNodes[blockIndex].isDirty = true; 1670 } 1671 if (blockEndLines[i] >= lastLine) break; 1672 i++; 1673 } 1674 } 1675 } 1676 1677 void invalidateTextDisplayList() { 1678 if (mTextRenderNodes != null) { 1679 for (int i = 0; i < mTextRenderNodes.length; i++) { 1680 if (mTextRenderNodes[i] != null) mTextRenderNodes[i].isDirty = true; 1681 } 1682 } 1683 } 1684 1685 void updateCursorsPositions() { 1686 if (mTextView.mCursorDrawableRes == 0) { 1687 mCursorCount = 0; 1688 return; 1689 } 1690 1691 Layout layout = getActiveLayout(); 1692 final int offset = mTextView.getSelectionStart(); 1693 final int line = layout.getLineForOffset(offset); 1694 final int top = layout.getLineTop(line); 1695 final int bottom = layout.getLineTop(line + 1); 1696 1697 mCursorCount = layout.isLevelBoundary(offset) ? 2 : 1; 1698 1699 int middle = bottom; 1700 if (mCursorCount == 2) { 1701 // Similar to what is done in {@link Layout.#getCursorPath(int, Path, CharSequence)} 1702 middle = (top + bottom) >> 1; 1703 } 1704 1705 boolean clamped = layout.shouldClampCursor(line); 1706 updateCursorPosition(0, top, middle, layout.getPrimaryHorizontal(offset, clamped)); 1707 1708 if (mCursorCount == 2) { 1709 updateCursorPosition(1, middle, bottom, 1710 layout.getSecondaryHorizontal(offset, clamped)); 1711 } 1712 } 1713 1714 /** 1715 * Start an Insertion action mode. 1716 */ 1717 void startInsertionActionMode() { 1718 if (mInsertionActionModeRunnable != null) { 1719 mTextView.removeCallbacks(mInsertionActionModeRunnable); 1720 } 1721 if (extractedTextModeWillBeStarted()) { 1722 return; 1723 } 1724 stopTextActionMode(); 1725 1726 ActionMode.Callback actionModeCallback = 1727 new TextActionModeCallback(false /* hasSelection */); 1728 mTextActionMode = mTextView.startActionMode( 1729 actionModeCallback, ActionMode.TYPE_FLOATING); 1730 if (mTextActionMode != null && getInsertionController() != null) { 1731 getInsertionController().show(); 1732 } 1733 } 1734 1735 /** 1736 * Starts a Selection Action Mode with the current selection and ensures the selection handles 1737 * are shown if there is a selection, otherwise the insertion handle is shown. This should be 1738 * used when the mode is started from a non-touch event. 1739 * 1740 * @return true if the selection mode was actually started. 1741 */ 1742 boolean startSelectionActionMode() { 1743 boolean selectionStarted = startSelectionActionModeInternal(); 1744 if (selectionStarted) { 1745 getSelectionController().show(); 1746 } else if (getInsertionController() != null) { 1747 getInsertionController().show(); 1748 } 1749 return selectionStarted; 1750 } 1751 1752 /** 1753 * If the TextView allows text selection, selects the current word when no existing selection 1754 * was available and starts a drag. 1755 * 1756 * @return true if the drag was started. 1757 */ 1758 private boolean selectCurrentWordAndStartDrag() { 1759 if (mInsertionActionModeRunnable != null) { 1760 mTextView.removeCallbacks(mInsertionActionModeRunnable); 1761 } 1762 if (extractedTextModeWillBeStarted()) { 1763 return false; 1764 } 1765 if (mTextActionMode != null) { 1766 mTextActionMode.finish(); 1767 } 1768 if (!checkFieldAndSelectCurrentWord()) { 1769 return false; 1770 } 1771 1772 // Avoid dismissing the selection if it exists. 1773 mPreserveDetachedSelection = true; 1774 stopTextActionMode(); 1775 mPreserveDetachedSelection = false; 1776 1777 getSelectionController().enterDrag( 1778 SelectionModifierCursorController.DRAG_ACCELERATOR_MODE_WORD); 1779 return true; 1780 } 1781 1782 /** 1783 * Checks whether a selection can be performed on the current TextView and if so selects 1784 * the current word. 1785 * 1786 * @return true if there already was a selection or if the current word was selected. 1787 */ 1788 boolean checkFieldAndSelectCurrentWord() { 1789 if (!mTextView.canSelectText() || !mTextView.requestFocus()) { 1790 Log.w(TextView.LOG_TAG, 1791 "TextView does not support text selection. Selection cancelled."); 1792 return false; 1793 } 1794 1795 if (!mTextView.hasSelection()) { 1796 // There may already be a selection on device rotation 1797 return selectCurrentWord(); 1798 } 1799 return true; 1800 } 1801 1802 private boolean startSelectionActionModeInternal() { 1803 if (mTextActionMode != null) { 1804 // Text action mode is already started 1805 mTextActionMode.invalidate(); 1806 return false; 1807 } 1808 1809 if (!checkFieldAndSelectCurrentWord()) { 1810 return false; 1811 } 1812 1813 boolean willExtract = extractedTextModeWillBeStarted(); 1814 1815 // Do not start the action mode when extracted text will show up full screen, which would 1816 // immediately hide the newly created action bar and would be visually distracting. 1817 if (!willExtract) { 1818 ActionMode.Callback actionModeCallback = 1819 new TextActionModeCallback(true /* hasSelection */); 1820 mTextActionMode = mTextView.startActionMode( 1821 actionModeCallback, ActionMode.TYPE_FLOATING); 1822 } 1823 1824 final boolean selectionStarted = mTextActionMode != null || willExtract; 1825 if (selectionStarted && !mTextView.isTextSelectable() && mShowSoftInputOnFocus) { 1826 // Show the IME to be able to replace text, except when selecting non editable text. 1827 final InputMethodManager imm = InputMethodManager.peekInstance(); 1828 if (imm != null) { 1829 imm.showSoftInput(mTextView, 0, null); 1830 } 1831 } 1832 return selectionStarted; 1833 } 1834 1835 boolean extractedTextModeWillBeStarted() { 1836 if (!(mTextView.isInExtractedMode())) { 1837 final InputMethodManager imm = InputMethodManager.peekInstance(); 1838 return imm != null && imm.isFullscreenMode(); 1839 } 1840 return false; 1841 } 1842 1843 /** 1844 * @return <code>true</code> if it's reasonable to offer to show suggestions depending on 1845 * the current cursor position or selection range. This method is consistent with the 1846 * method to show suggestions {@link SuggestionsPopupWindow#updateSuggestions}. 1847 */ 1848 private boolean shouldOfferToShowSuggestions() { 1849 CharSequence text = mTextView.getText(); 1850 if (!(text instanceof Spannable)) return false; 1851 1852 final Spannable spannable = (Spannable) text; 1853 final int selectionStart = mTextView.getSelectionStart(); 1854 final int selectionEnd = mTextView.getSelectionEnd(); 1855 final SuggestionSpan[] suggestionSpans = spannable.getSpans(selectionStart, selectionEnd, 1856 SuggestionSpan.class); 1857 if (suggestionSpans.length == 0) { 1858 return false; 1859 } 1860 if (selectionStart == selectionEnd) { 1861 // Spans overlap the cursor. 1862 for (int i = 0; i < suggestionSpans.length; i++) { 1863 if (suggestionSpans[i].getSuggestions().length > 0) { 1864 return true; 1865 } 1866 } 1867 return false; 1868 } 1869 int minSpanStart = mTextView.getText().length(); 1870 int maxSpanEnd = 0; 1871 int unionOfSpansCoveringSelectionStartStart = mTextView.getText().length(); 1872 int unionOfSpansCoveringSelectionStartEnd = 0; 1873 boolean hasValidSuggestions = false; 1874 for (int i = 0; i < suggestionSpans.length; i++) { 1875 final int spanStart = spannable.getSpanStart(suggestionSpans[i]); 1876 final int spanEnd = spannable.getSpanEnd(suggestionSpans[i]); 1877 minSpanStart = Math.min(minSpanStart, spanStart); 1878 maxSpanEnd = Math.max(maxSpanEnd, spanEnd); 1879 if (selectionStart < spanStart || selectionStart > spanEnd) { 1880 // The span doesn't cover the current selection start point. 1881 continue; 1882 } 1883 hasValidSuggestions = 1884 hasValidSuggestions || suggestionSpans[i].getSuggestions().length > 0; 1885 unionOfSpansCoveringSelectionStartStart = 1886 Math.min(unionOfSpansCoveringSelectionStartStart, spanStart); 1887 unionOfSpansCoveringSelectionStartEnd = 1888 Math.max(unionOfSpansCoveringSelectionStartEnd, spanEnd); 1889 } 1890 if (!hasValidSuggestions) { 1891 return false; 1892 } 1893 if (unionOfSpansCoveringSelectionStartStart >= unionOfSpansCoveringSelectionStartEnd) { 1894 // No spans cover the selection start point. 1895 return false; 1896 } 1897 if (minSpanStart < unionOfSpansCoveringSelectionStartStart 1898 || maxSpanEnd > unionOfSpansCoveringSelectionStartEnd) { 1899 // There is a span that is not covered by the union. In this case, we soouldn't offer 1900 // to show suggestions as it's confusing. 1901 return false; 1902 } 1903 return true; 1904 } 1905 1906 /** 1907 * @return <code>true</code> if the cursor is inside an {@link SuggestionSpan} with 1908 * {@link SuggestionSpan#FLAG_EASY_CORRECT} set. 1909 */ 1910 private boolean isCursorInsideEasyCorrectionSpan() { 1911 Spannable spannable = (Spannable) mTextView.getText(); 1912 SuggestionSpan[] suggestionSpans = spannable.getSpans(mTextView.getSelectionStart(), 1913 mTextView.getSelectionEnd(), SuggestionSpan.class); 1914 for (int i = 0; i < suggestionSpans.length; i++) { 1915 if ((suggestionSpans[i].getFlags() & SuggestionSpan.FLAG_EASY_CORRECT) != 0) { 1916 return true; 1917 } 1918 } 1919 return false; 1920 } 1921 1922 void onTouchUpEvent(MotionEvent event) { 1923 boolean selectAllGotFocus = mSelectAllOnFocus && mTextView.didTouchFocusSelect(); 1924 hideCursorAndSpanControllers(); 1925 stopTextActionMode(); 1926 CharSequence text = mTextView.getText(); 1927 if (!selectAllGotFocus && text.length() > 0) { 1928 // Move cursor 1929 final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); 1930 Selection.setSelection((Spannable) text, offset); 1931 if (mSpellChecker != null) { 1932 // When the cursor moves, the word that was typed may need spell check 1933 mSpellChecker.onSelectionChanged(); 1934 } 1935 1936 if (!extractedTextModeWillBeStarted()) { 1937 if (isCursorInsideEasyCorrectionSpan()) { 1938 // Cancel the single tap delayed runnable. 1939 if (mInsertionActionModeRunnable != null) { 1940 mTextView.removeCallbacks(mInsertionActionModeRunnable); 1941 } 1942 1943 mShowSuggestionRunnable = new Runnable() { 1944 public void run() { 1945 showSuggestions(); 1946 } 1947 }; 1948 // removeCallbacks is performed on every touch 1949 mTextView.postDelayed(mShowSuggestionRunnable, 1950 ViewConfiguration.getDoubleTapTimeout()); 1951 } else if (hasInsertionController()) { 1952 getInsertionController().show(); 1953 } 1954 } 1955 } 1956 } 1957 1958 protected void stopTextActionMode() { 1959 if (mTextActionMode != null) { 1960 // This will hide the mSelectionModifierCursorController 1961 mTextActionMode.finish(); 1962 } 1963 } 1964 1965 /** 1966 * @return True if this view supports insertion handles. 1967 */ 1968 boolean hasInsertionController() { 1969 return mInsertionControllerEnabled; 1970 } 1971 1972 /** 1973 * @return True if this view supports selection handles. 1974 */ 1975 boolean hasSelectionController() { 1976 return mSelectionControllerEnabled; 1977 } 1978 1979 InsertionPointCursorController getInsertionController() { 1980 if (!mInsertionControllerEnabled) { 1981 return null; 1982 } 1983 1984 if (mInsertionPointCursorController == null) { 1985 mInsertionPointCursorController = new InsertionPointCursorController(); 1986 1987 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 1988 observer.addOnTouchModeChangeListener(mInsertionPointCursorController); 1989 } 1990 1991 return mInsertionPointCursorController; 1992 } 1993 1994 SelectionModifierCursorController getSelectionController() { 1995 if (!mSelectionControllerEnabled) { 1996 return null; 1997 } 1998 1999 if (mSelectionModifierCursorController == null) { 2000 mSelectionModifierCursorController = new SelectionModifierCursorController(); 2001 2002 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 2003 observer.addOnTouchModeChangeListener(mSelectionModifierCursorController); 2004 } 2005 2006 return mSelectionModifierCursorController; 2007 } 2008 2009 private void updateCursorPosition(int cursorIndex, int top, int bottom, float horizontal) { 2010 if (mCursorDrawable[cursorIndex] == null) 2011 mCursorDrawable[cursorIndex] = mTextView.getContext().getDrawable( 2012 mTextView.mCursorDrawableRes); 2013 2014 if (mTempRect == null) mTempRect = new Rect(); 2015 mCursorDrawable[cursorIndex].getPadding(mTempRect); 2016 final int width = mCursorDrawable[cursorIndex].getIntrinsicWidth(); 2017 horizontal = Math.max(0.5f, horizontal - 0.5f); 2018 final int left = (int) (horizontal) - mTempRect.left; 2019 mCursorDrawable[cursorIndex].setBounds(left, top - mTempRect.top, left + width, 2020 bottom + mTempRect.bottom); 2021 } 2022 2023 /** 2024 * Called by the framework in response to a text auto-correction (such as fixing a typo using a 2025 * a dictionary) from the current input method, provided by it calling 2026 * {@link InputConnection#commitCorrection} InputConnection.commitCorrection()}. The default 2027 * implementation flashes the background of the corrected word to provide feedback to the user. 2028 * 2029 * @param info The auto correct info about the text that was corrected. 2030 */ 2031 public void onCommitCorrection(CorrectionInfo info) { 2032 if (mCorrectionHighlighter == null) { 2033 mCorrectionHighlighter = new CorrectionHighlighter(); 2034 } else { 2035 mCorrectionHighlighter.invalidate(false); 2036 } 2037 2038 mCorrectionHighlighter.highlight(info); 2039 } 2040 2041 void showSuggestions() { 2042 if (mSuggestionsPopupWindow == null) { 2043 mSuggestionsPopupWindow = new SuggestionsPopupWindow(); 2044 } 2045 hideCursorAndSpanControllers(); 2046 stopTextActionMode(); 2047 mSuggestionsPopupWindow.show(); 2048 } 2049 2050 void onScrollChanged() { 2051 if (mPositionListener != null) { 2052 mPositionListener.onScrollChanged(); 2053 } 2054 if (mTextActionMode != null) { 2055 mTextActionMode.invalidateContentRect(); 2056 } 2057 } 2058 2059 /** 2060 * @return True when the TextView isFocused and has a valid zero-length selection (cursor). 2061 */ 2062 private boolean shouldBlink() { 2063 if (!isCursorVisible() || !mTextView.isFocused()) return false; 2064 2065 final int start = mTextView.getSelectionStart(); 2066 if (start < 0) return false; 2067 2068 final int end = mTextView.getSelectionEnd(); 2069 if (end < 0) return false; 2070 2071 return start == end; 2072 } 2073 2074 void makeBlink() { 2075 if (shouldBlink()) { 2076 mShowCursor = SystemClock.uptimeMillis(); 2077 if (mBlink == null) mBlink = new Blink(); 2078 mTextView.removeCallbacks(mBlink); 2079 mTextView.postDelayed(mBlink, BLINK); 2080 } else { 2081 if (mBlink != null) mTextView.removeCallbacks(mBlink); 2082 } 2083 } 2084 2085 private class Blink implements Runnable { 2086 private boolean mCancelled; 2087 2088 public void run() { 2089 if (mCancelled) { 2090 return; 2091 } 2092 2093 mTextView.removeCallbacks(this); 2094 2095 if (shouldBlink()) { 2096 if (mTextView.getLayout() != null) { 2097 mTextView.invalidateCursorPath(); 2098 } 2099 2100 mTextView.postDelayed(this, BLINK); 2101 } 2102 } 2103 2104 void cancel() { 2105 if (!mCancelled) { 2106 mTextView.removeCallbacks(this); 2107 mCancelled = true; 2108 } 2109 } 2110 2111 void uncancel() { 2112 mCancelled = false; 2113 } 2114 } 2115 2116 private DragShadowBuilder getTextThumbnailBuilder(CharSequence text) { 2117 TextView shadowView = (TextView) View.inflate(mTextView.getContext(), 2118 com.android.internal.R.layout.text_drag_thumbnail, null); 2119 2120 if (shadowView == null) { 2121 throw new IllegalArgumentException("Unable to inflate text drag thumbnail"); 2122 } 2123 2124 if (text.length() > DRAG_SHADOW_MAX_TEXT_LENGTH) { 2125 text = text.subSequence(0, DRAG_SHADOW_MAX_TEXT_LENGTH); 2126 } 2127 shadowView.setText(text); 2128 shadowView.setTextColor(mTextView.getTextColors()); 2129 2130 shadowView.setTextAppearance(R.styleable.Theme_textAppearanceLarge); 2131 shadowView.setGravity(Gravity.CENTER); 2132 2133 shadowView.setLayoutParams(new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, 2134 ViewGroup.LayoutParams.WRAP_CONTENT)); 2135 2136 final int size = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED); 2137 shadowView.measure(size, size); 2138 2139 shadowView.layout(0, 0, shadowView.getMeasuredWidth(), shadowView.getMeasuredHeight()); 2140 shadowView.invalidate(); 2141 return new DragShadowBuilder(shadowView); 2142 } 2143 2144 private static class DragLocalState { 2145 public TextView sourceTextView; 2146 public int start, end; 2147 2148 public DragLocalState(TextView sourceTextView, int start, int end) { 2149 this.sourceTextView = sourceTextView; 2150 this.start = start; 2151 this.end = end; 2152 } 2153 } 2154 2155 void onDrop(DragEvent event) { 2156 StringBuilder content = new StringBuilder(""); 2157 ClipData clipData = event.getClipData(); 2158 final int itemCount = clipData.getItemCount(); 2159 for (int i=0; i < itemCount; i++) { 2160 Item item = clipData.getItemAt(i); 2161 content.append(item.coerceToStyledText(mTextView.getContext())); 2162 } 2163 2164 final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); 2165 2166 Object localState = event.getLocalState(); 2167 DragLocalState dragLocalState = null; 2168 if (localState instanceof DragLocalState) { 2169 dragLocalState = (DragLocalState) localState; 2170 } 2171 boolean dragDropIntoItself = dragLocalState != null && 2172 dragLocalState.sourceTextView == mTextView; 2173 2174 if (dragDropIntoItself) { 2175 if (offset >= dragLocalState.start && offset < dragLocalState.end) { 2176 // A drop inside the original selection discards the drop. 2177 return; 2178 } 2179 } 2180 2181 final int originalLength = mTextView.getText().length(); 2182 int min = offset; 2183 int max = offset; 2184 2185 Selection.setSelection((Spannable) mTextView.getText(), max); 2186 mTextView.replaceText_internal(min, max, content); 2187 2188 if (dragDropIntoItself) { 2189 int dragSourceStart = dragLocalState.start; 2190 int dragSourceEnd = dragLocalState.end; 2191 if (max <= dragSourceStart) { 2192 // Inserting text before selection has shifted positions 2193 final int shift = mTextView.getText().length() - originalLength; 2194 dragSourceStart += shift; 2195 dragSourceEnd += shift; 2196 } 2197 2198 // Delete original selection 2199 mTextView.deleteText_internal(dragSourceStart, dragSourceEnd); 2200 2201 // Make sure we do not leave two adjacent spaces. 2202 final int prevCharIdx = Math.max(0, dragSourceStart - 1); 2203 final int nextCharIdx = Math.min(mTextView.getText().length(), dragSourceStart + 1); 2204 if (nextCharIdx > prevCharIdx + 1) { 2205 CharSequence t = mTextView.getTransformedText(prevCharIdx, nextCharIdx); 2206 if (Character.isSpaceChar(t.charAt(0)) && Character.isSpaceChar(t.charAt(1))) { 2207 mTextView.deleteText_internal(prevCharIdx, prevCharIdx + 1); 2208 } 2209 } 2210 } 2211 } 2212 2213 public void addSpanWatchers(Spannable text) { 2214 final int textLength = text.length(); 2215 2216 if (mKeyListener != null) { 2217 text.setSpan(mKeyListener, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE); 2218 } 2219 2220 if (mSpanController == null) { 2221 mSpanController = new SpanController(); 2222 } 2223 text.setSpan(mSpanController, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE); 2224 } 2225 2226 /** 2227 * Controls the {@link EasyEditSpan} monitoring when it is added, and when the related 2228 * pop-up should be displayed. 2229 * Also monitors {@link Selection} to call back to the attached input method. 2230 */ 2231 class SpanController implements SpanWatcher { 2232 2233 private static final int DISPLAY_TIMEOUT_MS = 3000; // 3 secs 2234 2235 private EasyEditPopupWindow mPopupWindow; 2236 2237 private Runnable mHidePopup; 2238 2239 // This function is pure but inner classes can't have static functions 2240 private boolean isNonIntermediateSelectionSpan(final Spannable text, 2241 final Object span) { 2242 return (Selection.SELECTION_START == span || Selection.SELECTION_END == span) 2243 && (text.getSpanFlags(span) & Spanned.SPAN_INTERMEDIATE) == 0; 2244 } 2245 2246 @Override 2247 public void onSpanAdded(Spannable text, Object span, int start, int end) { 2248 if (isNonIntermediateSelectionSpan(text, span)) { 2249 sendUpdateSelection(); 2250 } else if (span instanceof EasyEditSpan) { 2251 if (mPopupWindow == null) { 2252 mPopupWindow = new EasyEditPopupWindow(); 2253 mHidePopup = new Runnable() { 2254 @Override 2255 public void run() { 2256 hide(); 2257 } 2258 }; 2259 } 2260 2261 // Make sure there is only at most one EasyEditSpan in the text 2262 if (mPopupWindow.mEasyEditSpan != null) { 2263 mPopupWindow.mEasyEditSpan.setDeleteEnabled(false); 2264 } 2265 2266 mPopupWindow.setEasyEditSpan((EasyEditSpan) span); 2267 mPopupWindow.setOnDeleteListener(new EasyEditDeleteListener() { 2268 @Override 2269 public void onDeleteClick(EasyEditSpan span) { 2270 Editable editable = (Editable) mTextView.getText(); 2271 int start = editable.getSpanStart(span); 2272 int end = editable.getSpanEnd(span); 2273 if (start >= 0 && end >= 0) { 2274 sendEasySpanNotification(EasyEditSpan.TEXT_DELETED, span); 2275 mTextView.deleteText_internal(start, end); 2276 } 2277 editable.removeSpan(span); 2278 } 2279 }); 2280 2281 if (mTextView.getWindowVisibility() != View.VISIBLE) { 2282 // The window is not visible yet, ignore the text change. 2283 return; 2284 } 2285 2286 if (mTextView.getLayout() == null) { 2287 // The view has not been laid out yet, ignore the text change 2288 return; 2289 } 2290 2291 if (extractedTextModeWillBeStarted()) { 2292 // The input is in extract mode. Do not handle the easy edit in 2293 // the original TextView, as the ExtractEditText will do 2294 return; 2295 } 2296 2297 mPopupWindow.show(); 2298 mTextView.removeCallbacks(mHidePopup); 2299 mTextView.postDelayed(mHidePopup, DISPLAY_TIMEOUT_MS); 2300 } 2301 } 2302 2303 @Override 2304 public void onSpanRemoved(Spannable text, Object span, int start, int end) { 2305 if (isNonIntermediateSelectionSpan(text, span)) { 2306 sendUpdateSelection(); 2307 } else if (mPopupWindow != null && span == mPopupWindow.mEasyEditSpan) { 2308 hide(); 2309 } 2310 } 2311 2312 @Override 2313 public void onSpanChanged(Spannable text, Object span, int previousStart, int previousEnd, 2314 int newStart, int newEnd) { 2315 if (isNonIntermediateSelectionSpan(text, span)) { 2316 sendUpdateSelection(); 2317 } else if (mPopupWindow != null && span instanceof EasyEditSpan) { 2318 EasyEditSpan easyEditSpan = (EasyEditSpan) span; 2319 sendEasySpanNotification(EasyEditSpan.TEXT_MODIFIED, easyEditSpan); 2320 text.removeSpan(easyEditSpan); 2321 } 2322 } 2323 2324 public void hide() { 2325 if (mPopupWindow != null) { 2326 mPopupWindow.hide(); 2327 mTextView.removeCallbacks(mHidePopup); 2328 } 2329 } 2330 2331 private void sendEasySpanNotification(int textChangedType, EasyEditSpan span) { 2332 try { 2333 PendingIntent pendingIntent = span.getPendingIntent(); 2334 if (pendingIntent != null) { 2335 Intent intent = new Intent(); 2336 intent.putExtra(EasyEditSpan.EXTRA_TEXT_CHANGED_TYPE, textChangedType); 2337 pendingIntent.send(mTextView.getContext(), 0, intent); 2338 } 2339 } catch (CanceledException e) { 2340 // This should not happen, as we should try to send the intent only once. 2341 Log.w(TAG, "PendingIntent for notification cannot be sent", e); 2342 } 2343 } 2344 } 2345 2346 /** 2347 * Listens for the delete event triggered by {@link EasyEditPopupWindow}. 2348 */ 2349 private interface EasyEditDeleteListener { 2350 2351 /** 2352 * Clicks the delete pop-up. 2353 */ 2354 void onDeleteClick(EasyEditSpan span); 2355 } 2356 2357 /** 2358 * Displays the actions associated to an {@link EasyEditSpan}. The pop-up is controlled 2359 * by {@link SpanController}. 2360 */ 2361 private class EasyEditPopupWindow extends PinnedPopupWindow 2362 implements OnClickListener { 2363 private static final int POPUP_TEXT_LAYOUT = 2364 com.android.internal.R.layout.text_edit_action_popup_text; 2365 private TextView mDeleteTextView; 2366 private EasyEditSpan mEasyEditSpan; 2367 private EasyEditDeleteListener mOnDeleteListener; 2368 2369 @Override 2370 protected void createPopupWindow() { 2371 mPopupWindow = new PopupWindow(mTextView.getContext(), null, 2372 com.android.internal.R.attr.textSelectHandleWindowStyle); 2373 mPopupWindow.setInputMethodMode(PopupWindow.INPUT_METHOD_NOT_NEEDED); 2374 mPopupWindow.setClippingEnabled(true); 2375 } 2376 2377 @Override 2378 protected void initContentView() { 2379 LinearLayout linearLayout = new LinearLayout(mTextView.getContext()); 2380 linearLayout.setOrientation(LinearLayout.HORIZONTAL); 2381 mContentView = linearLayout; 2382 mContentView.setBackgroundResource( 2383 com.android.internal.R.drawable.text_edit_side_paste_window); 2384 2385 LayoutInflater inflater = (LayoutInflater)mTextView.getContext(). 2386 getSystemService(Context.LAYOUT_INFLATER_SERVICE); 2387 2388 LayoutParams wrapContent = new LayoutParams( 2389 ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT); 2390 2391 mDeleteTextView = (TextView) inflater.inflate(POPUP_TEXT_LAYOUT, null); 2392 mDeleteTextView.setLayoutParams(wrapContent); 2393 mDeleteTextView.setText(com.android.internal.R.string.delete); 2394 mDeleteTextView.setOnClickListener(this); 2395 mContentView.addView(mDeleteTextView); 2396 } 2397 2398 public void setEasyEditSpan(EasyEditSpan easyEditSpan) { 2399 mEasyEditSpan = easyEditSpan; 2400 } 2401 2402 private void setOnDeleteListener(EasyEditDeleteListener listener) { 2403 mOnDeleteListener = listener; 2404 } 2405 2406 @Override 2407 public void onClick(View view) { 2408 if (view == mDeleteTextView 2409 && mEasyEditSpan != null && mEasyEditSpan.isDeleteEnabled() 2410 && mOnDeleteListener != null) { 2411 mOnDeleteListener.onDeleteClick(mEasyEditSpan); 2412 } 2413 } 2414 2415 @Override 2416 public void hide() { 2417 if (mEasyEditSpan != null) { 2418 mEasyEditSpan.setDeleteEnabled(false); 2419 } 2420 mOnDeleteListener = null; 2421 super.hide(); 2422 } 2423 2424 @Override 2425 protected int getTextOffset() { 2426 // Place the pop-up at the end of the span 2427 Editable editable = (Editable) mTextView.getText(); 2428 return editable.getSpanEnd(mEasyEditSpan); 2429 } 2430 2431 @Override 2432 protected int getVerticalLocalPosition(int line) { 2433 return mTextView.getLayout().getLineBottom(line); 2434 } 2435 2436 @Override 2437 protected int clipVertically(int positionY) { 2438 // As we display the pop-up below the span, no vertical clipping is required. 2439 return positionY; 2440 } 2441 } 2442 2443 private class PositionListener implements ViewTreeObserver.OnPreDrawListener { 2444 // 3 handles 2445 // 3 ActionPopup [replace, suggestion, easyedit] (suggestionsPopup first hides the others) 2446 // 1 CursorAnchorInfoNotifier 2447 private final int MAXIMUM_NUMBER_OF_LISTENERS = 7; 2448 private TextViewPositionListener[] mPositionListeners = 2449 new TextViewPositionListener[MAXIMUM_NUMBER_OF_LISTENERS]; 2450 private boolean mCanMove[] = new boolean[MAXIMUM_NUMBER_OF_LISTENERS]; 2451 private boolean mPositionHasChanged = true; 2452 // Absolute position of the TextView with respect to its parent window 2453 private int mPositionX, mPositionY; 2454 private int mNumberOfListeners; 2455 private boolean mScrollHasChanged; 2456 final int[] mTempCoords = new int[2]; 2457 2458 public void addSubscriber(TextViewPositionListener positionListener, boolean canMove) { 2459 if (mNumberOfListeners == 0) { 2460 updatePosition(); 2461 ViewTreeObserver vto = mTextView.getViewTreeObserver(); 2462 vto.addOnPreDrawListener(this); 2463 } 2464 2465 int emptySlotIndex = -1; 2466 for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) { 2467 TextViewPositionListener listener = mPositionListeners[i]; 2468 if (listener == positionListener) { 2469 return; 2470 } else if (emptySlotIndex < 0 && listener == null) { 2471 emptySlotIndex = i; 2472 } 2473 } 2474 2475 mPositionListeners[emptySlotIndex] = positionListener; 2476 mCanMove[emptySlotIndex] = canMove; 2477 mNumberOfListeners++; 2478 } 2479 2480 public void removeSubscriber(TextViewPositionListener positionListener) { 2481 for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) { 2482 if (mPositionListeners[i] == positionListener) { 2483 mPositionListeners[i] = null; 2484 mNumberOfListeners--; 2485 break; 2486 } 2487 } 2488 2489 if (mNumberOfListeners == 0) { 2490 ViewTreeObserver vto = mTextView.getViewTreeObserver(); 2491 vto.removeOnPreDrawListener(this); 2492 } 2493 } 2494 2495 public int getPositionX() { 2496 return mPositionX; 2497 } 2498 2499 public int getPositionY() { 2500 return mPositionY; 2501 } 2502 2503 @Override 2504 public boolean onPreDraw() { 2505 updatePosition(); 2506 2507 for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) { 2508 if (mPositionHasChanged || mScrollHasChanged || mCanMove[i]) { 2509 TextViewPositionListener positionListener = mPositionListeners[i]; 2510 if (positionListener != null) { 2511 positionListener.updatePosition(mPositionX, mPositionY, 2512 mPositionHasChanged, mScrollHasChanged); 2513 } 2514 } 2515 } 2516 2517 mScrollHasChanged = false; 2518 return true; 2519 } 2520 2521 private void updatePosition() { 2522 mTextView.getLocationInWindow(mTempCoords); 2523 2524 mPositionHasChanged = mTempCoords[0] != mPositionX || mTempCoords[1] != mPositionY; 2525 2526 mPositionX = mTempCoords[0]; 2527 mPositionY = mTempCoords[1]; 2528 } 2529 2530 public void onScrollChanged() { 2531 mScrollHasChanged = true; 2532 } 2533 } 2534 2535 private abstract class PinnedPopupWindow implements TextViewPositionListener { 2536 protected PopupWindow mPopupWindow; 2537 protected ViewGroup mContentView; 2538 int mPositionX, mPositionY; 2539 2540 protected abstract void createPopupWindow(); 2541 protected abstract void initContentView(); 2542 protected abstract int getTextOffset(); 2543 protected abstract int getVerticalLocalPosition(int line); 2544 protected abstract int clipVertically(int positionY); 2545 2546 public PinnedPopupWindow() { 2547 createPopupWindow(); 2548 2549 mPopupWindow.setWindowLayoutType( 2550 WindowManager.LayoutParams.TYPE_APPLICATION_ABOVE_SUB_PANEL); 2551 mPopupWindow.setWidth(ViewGroup.LayoutParams.WRAP_CONTENT); 2552 mPopupWindow.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT); 2553 2554 initContentView(); 2555 2556 LayoutParams wrapContent = new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, 2557 ViewGroup.LayoutParams.WRAP_CONTENT); 2558 mContentView.setLayoutParams(wrapContent); 2559 2560 mPopupWindow.setContentView(mContentView); 2561 } 2562 2563 public void show() { 2564 getPositionListener().addSubscriber(this, false /* offset is fixed */); 2565 2566 computeLocalPosition(); 2567 2568 final PositionListener positionListener = getPositionListener(); 2569 updatePosition(positionListener.getPositionX(), positionListener.getPositionY()); 2570 } 2571 2572 protected void measureContent() { 2573 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 2574 mContentView.measure( 2575 View.MeasureSpec.makeMeasureSpec(displayMetrics.widthPixels, 2576 View.MeasureSpec.AT_MOST), 2577 View.MeasureSpec.makeMeasureSpec(displayMetrics.heightPixels, 2578 View.MeasureSpec.AT_MOST)); 2579 } 2580 2581 /* The popup window will be horizontally centered on the getTextOffset() and vertically 2582 * positioned according to viewportToContentHorizontalOffset. 2583 * 2584 * This method assumes that mContentView has properly been measured from its content. */ 2585 private void computeLocalPosition() { 2586 measureContent(); 2587 final int width = mContentView.getMeasuredWidth(); 2588 final int offset = getTextOffset(); 2589 mPositionX = (int) (mTextView.getLayout().getPrimaryHorizontal(offset) - width / 2.0f); 2590 mPositionX += mTextView.viewportToContentHorizontalOffset(); 2591 2592 final int line = mTextView.getLayout().getLineForOffset(offset); 2593 mPositionY = getVerticalLocalPosition(line); 2594 mPositionY += mTextView.viewportToContentVerticalOffset(); 2595 } 2596 2597 private void updatePosition(int parentPositionX, int parentPositionY) { 2598 int positionX = parentPositionX + mPositionX; 2599 int positionY = parentPositionY + mPositionY; 2600 2601 positionY = clipVertically(positionY); 2602 2603 // Horizontal clipping 2604 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 2605 final int width = mContentView.getMeasuredWidth(); 2606 positionX = Math.min(displayMetrics.widthPixels - width, positionX); 2607 positionX = Math.max(0, positionX); 2608 2609 if (isShowing()) { 2610 mPopupWindow.update(positionX, positionY, -1, -1); 2611 } else { 2612 mPopupWindow.showAtLocation(mTextView, Gravity.NO_GRAVITY, 2613 positionX, positionY); 2614 } 2615 } 2616 2617 public void hide() { 2618 mPopupWindow.dismiss(); 2619 getPositionListener().removeSubscriber(this); 2620 } 2621 2622 @Override 2623 public void updatePosition(int parentPositionX, int parentPositionY, 2624 boolean parentPositionChanged, boolean parentScrolled) { 2625 // Either parentPositionChanged or parentScrolled is true, check if still visible 2626 if (isShowing() && isOffsetVisible(getTextOffset())) { 2627 if (parentScrolled) computeLocalPosition(); 2628 updatePosition(parentPositionX, parentPositionY); 2629 } else { 2630 hide(); 2631 } 2632 } 2633 2634 public boolean isShowing() { 2635 return mPopupWindow.isShowing(); 2636 } 2637 } 2638 2639 @VisibleForTesting 2640 public class SuggestionsPopupWindow extends PinnedPopupWindow implements OnItemClickListener { 2641 private static final int MAX_NUMBER_SUGGESTIONS = SuggestionSpan.SUGGESTIONS_MAX_SIZE; 2642 2643 // Key of intent extras for inserting new word into user dictionary. 2644 private static final String USER_DICTIONARY_EXTRA_WORD = "word"; 2645 private static final String USER_DICTIONARY_EXTRA_LOCALE = "locale"; 2646 2647 private SuggestionInfo[] mSuggestionInfos; 2648 private int mNumberOfSuggestions; 2649 private boolean mCursorWasVisibleBeforeSuggestions; 2650 private boolean mIsShowingUp = false; 2651 private SuggestionAdapter mSuggestionsAdapter; 2652 private final Comparator<SuggestionSpan> mSuggestionSpanComparator; 2653 private final HashMap<SuggestionSpan, Integer> mSpansLengths; 2654 private final TextAppearanceSpan mHighlightSpan = new TextAppearanceSpan( 2655 mTextView.getContext(), mTextView.mTextEditSuggestionHighlightStyle); 2656 private TextView mAddToDictionaryButton; 2657 private TextView mDeleteButton; 2658 private SuggestionSpan mMisspelledSpan; 2659 2660 private class CustomPopupWindow extends PopupWindow { 2661 public CustomPopupWindow(Context context, int defStyleAttr) { 2662 super(context, null, defStyleAttr); 2663 } 2664 2665 @Override 2666 public void dismiss() { 2667 super.dismiss(); 2668 2669 getPositionListener().removeSubscriber(SuggestionsPopupWindow.this); 2670 2671 // Safe cast since show() checks that mTextView.getText() is an Editable 2672 ((Spannable) mTextView.getText()).removeSpan(mSuggestionRangeSpan); 2673 2674 mTextView.setCursorVisible(mCursorWasVisibleBeforeSuggestions); 2675 if (hasInsertionController()) { 2676 getInsertionController().show(); 2677 } 2678 } 2679 } 2680 2681 public SuggestionsPopupWindow() { 2682 mCursorWasVisibleBeforeSuggestions = mCursorVisible; 2683 mSuggestionSpanComparator = new SuggestionSpanComparator(); 2684 mSpansLengths = new HashMap<SuggestionSpan, Integer>(); 2685 } 2686 2687 @Override 2688 protected void createPopupWindow() { 2689 mPopupWindow = new CustomPopupWindow(mTextView.getContext(), 2690 com.android.internal.R.attr.textSuggestionsWindowStyle); 2691 mPopupWindow.setInputMethodMode(PopupWindow.INPUT_METHOD_NOT_NEEDED); 2692 mPopupWindow.setFocusable(true); 2693 mPopupWindow.setClippingEnabled(false); 2694 } 2695 2696 @Override 2697 protected void initContentView() { 2698 final LayoutInflater inflater = (LayoutInflater) mTextView.getContext(). 2699 getSystemService(Context.LAYOUT_INFLATER_SERVICE); 2700 final LinearLayout linearLayout = (LinearLayout) inflater.inflate( 2701 mTextView.mTextEditSuggestionContainerLayout, null); 2702 2703 final ListView suggestionListView = (ListView) linearLayout.findViewById( 2704 com.android.internal.R.id.suggestionContainer); 2705 2706 mSuggestionsAdapter = new SuggestionAdapter(); 2707 suggestionListView.setAdapter(mSuggestionsAdapter); 2708 suggestionListView.setOnItemClickListener(this); 2709 2710 // Inflate the suggestion items once and for all. 2711 mSuggestionInfos = new SuggestionInfo[MAX_NUMBER_SUGGESTIONS]; 2712 for (int i = 0; i < mSuggestionInfos.length; i++) { 2713 mSuggestionInfos[i] = new SuggestionInfo(); 2714 } 2715 2716 mContentView = linearLayout; 2717 2718 mAddToDictionaryButton = (TextView) linearLayout.findViewById( 2719 com.android.internal.R.id.addToDictionaryButton); 2720 mAddToDictionaryButton.setOnClickListener(new View.OnClickListener() { 2721 public void onClick(View v) { 2722 final Editable editable = (Editable) mTextView.getText(); 2723 final int spanStart = editable.getSpanStart(mMisspelledSpan); 2724 final int spanEnd = editable.getSpanEnd(mMisspelledSpan); 2725 final String originalText = TextUtils.substring(editable, spanStart, spanEnd); 2726 2727 final Intent intent = new Intent(Settings.ACTION_USER_DICTIONARY_INSERT); 2728 intent.putExtra(USER_DICTIONARY_EXTRA_WORD, originalText); 2729 intent.putExtra(USER_DICTIONARY_EXTRA_LOCALE, 2730 mTextView.getTextServicesLocale().toString()); 2731 intent.setFlags(intent.getFlags() | Intent.FLAG_ACTIVITY_NEW_TASK); 2732 mTextView.getContext().startActivity(intent); 2733 // There is no way to know if the word was indeed added. Re-check. 2734 // TODO The ExtractEditText should remove the span in the original text instead 2735 editable.removeSpan(mMisspelledSpan); 2736 Selection.setSelection(editable, spanEnd); 2737 updateSpellCheckSpans(spanStart, spanEnd, false); 2738 hideWithCleanUp(); 2739 } 2740 }); 2741 2742 mDeleteButton = (TextView) linearLayout.findViewById( 2743 com.android.internal.R.id.deleteButton); 2744 mDeleteButton.setOnClickListener(new View.OnClickListener() { 2745 public void onClick(View v) { 2746 final Editable editable = (Editable) mTextView.getText(); 2747 2748 final int spanUnionStart = editable.getSpanStart(mSuggestionRangeSpan); 2749 int spanUnionEnd = editable.getSpanEnd(mSuggestionRangeSpan); 2750 if (spanUnionStart >= 0 && spanUnionEnd > spanUnionStart) { 2751 // Do not leave two adjacent spaces after deletion, or one at beginning of 2752 // text 2753 if (spanUnionEnd < editable.length() && 2754 Character.isSpaceChar(editable.charAt(spanUnionEnd)) && 2755 (spanUnionStart == 0 || 2756 Character.isSpaceChar(editable.charAt(spanUnionStart - 1)))) { 2757 spanUnionEnd = spanUnionEnd + 1; 2758 } 2759 mTextView.deleteText_internal(spanUnionStart, spanUnionEnd); 2760 } 2761 hideWithCleanUp(); 2762 } 2763 }); 2764 2765 } 2766 2767 public boolean isShowingUp() { 2768 return mIsShowingUp; 2769 } 2770 2771 public void onParentLostFocus() { 2772 mIsShowingUp = false; 2773 } 2774 2775 private final class SuggestionInfo { 2776 int suggestionStart, suggestionEnd; // range of actual suggestion within text 2777 2778 // the SuggestionSpan that this TextView represents 2779 @Nullable 2780 SuggestionSpan suggestionSpan; 2781 2782 int suggestionIndex; // the index of this suggestion inside suggestionSpan 2783 2784 @Nullable 2785 final SpannableStringBuilder text = new SpannableStringBuilder(); 2786 2787 void clear() { 2788 suggestionSpan = null; 2789 text.clear(); 2790 } 2791 } 2792 2793 private class SuggestionAdapter extends BaseAdapter { 2794 private LayoutInflater mInflater = (LayoutInflater) mTextView.getContext(). 2795 getSystemService(Context.LAYOUT_INFLATER_SERVICE); 2796 2797 @Override 2798 public int getCount() { 2799 return mNumberOfSuggestions; 2800 } 2801 2802 @Override 2803 public Object getItem(int position) { 2804 return mSuggestionInfos[position]; 2805 } 2806 2807 @Override 2808 public long getItemId(int position) { 2809 return position; 2810 } 2811 2812 @Override 2813 public View getView(int position, View convertView, ViewGroup parent) { 2814 TextView textView = (TextView) convertView; 2815 2816 if (textView == null) { 2817 textView = (TextView) mInflater.inflate(mTextView.mTextEditSuggestionItemLayout, 2818 parent, false); 2819 } 2820 2821 final SuggestionInfo suggestionInfo = mSuggestionInfos[position]; 2822 textView.setText(suggestionInfo.text); 2823 return textView; 2824 } 2825 } 2826 2827 private class SuggestionSpanComparator implements Comparator<SuggestionSpan> { 2828 public int compare(SuggestionSpan span1, SuggestionSpan span2) { 2829 final int flag1 = span1.getFlags(); 2830 final int flag2 = span2.getFlags(); 2831 if (flag1 != flag2) { 2832 // The order here should match what is used in updateDrawState 2833 final boolean easy1 = (flag1 & SuggestionSpan.FLAG_EASY_CORRECT) != 0; 2834 final boolean easy2 = (flag2 & SuggestionSpan.FLAG_EASY_CORRECT) != 0; 2835 final boolean misspelled1 = (flag1 & SuggestionSpan.FLAG_MISSPELLED) != 0; 2836 final boolean misspelled2 = (flag2 & SuggestionSpan.FLAG_MISSPELLED) != 0; 2837 if (easy1 && !misspelled1) return -1; 2838 if (easy2 && !misspelled2) return 1; 2839 if (misspelled1) return -1; 2840 if (misspelled2) return 1; 2841 } 2842 2843 return mSpansLengths.get(span1).intValue() - mSpansLengths.get(span2).intValue(); 2844 } 2845 } 2846 2847 /** 2848 * Returns the suggestion spans that cover the current cursor position. The suggestion 2849 * spans are sorted according to the length of text that they are attached to. 2850 */ 2851 private SuggestionSpan[] getSuggestionSpans() { 2852 int pos = mTextView.getSelectionStart(); 2853 Spannable spannable = (Spannable) mTextView.getText(); 2854 SuggestionSpan[] suggestionSpans = spannable.getSpans(pos, pos, SuggestionSpan.class); 2855 2856 mSpansLengths.clear(); 2857 for (SuggestionSpan suggestionSpan : suggestionSpans) { 2858 int start = spannable.getSpanStart(suggestionSpan); 2859 int end = spannable.getSpanEnd(suggestionSpan); 2860 mSpansLengths.put(suggestionSpan, Integer.valueOf(end - start)); 2861 } 2862 2863 // The suggestions are sorted according to their types (easy correction first, then 2864 // misspelled) and to the length of the text that they cover (shorter first). 2865 Arrays.sort(suggestionSpans, mSuggestionSpanComparator); 2866 mSpansLengths.clear(); 2867 2868 return suggestionSpans; 2869 } 2870 2871 @VisibleForTesting 2872 public ViewGroup getContentViewForTesting() { 2873 return mContentView; 2874 } 2875 2876 @Override 2877 public void show() { 2878 if (!(mTextView.getText() instanceof Editable)) return; 2879 2880 if (updateSuggestions()) { 2881 mCursorWasVisibleBeforeSuggestions = mCursorVisible; 2882 mTextView.setCursorVisible(false); 2883 mIsShowingUp = true; 2884 super.show(); 2885 } 2886 } 2887 2888 @Override 2889 protected void measureContent() { 2890 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 2891 final int horizontalMeasure = View.MeasureSpec.makeMeasureSpec( 2892 displayMetrics.widthPixels, View.MeasureSpec.AT_MOST); 2893 final int verticalMeasure = View.MeasureSpec.makeMeasureSpec( 2894 displayMetrics.heightPixels, View.MeasureSpec.AT_MOST); 2895 2896 int width = 0; 2897 View view = null; 2898 for (int i = 0; i < mNumberOfSuggestions; i++) { 2899 view = mSuggestionsAdapter.getView(i, view, mContentView); 2900 view.getLayoutParams().width = LayoutParams.WRAP_CONTENT; 2901 view.measure(horizontalMeasure, verticalMeasure); 2902 width = Math.max(width, view.getMeasuredWidth()); 2903 } 2904 2905 if (mAddToDictionaryButton.getVisibility() != View.GONE) { 2906 mAddToDictionaryButton.measure(horizontalMeasure, verticalMeasure); 2907 width = Math.max(width, mAddToDictionaryButton.getMeasuredWidth()); 2908 } 2909 2910 mDeleteButton.measure(horizontalMeasure, verticalMeasure); 2911 width = Math.max(width, mDeleteButton.getMeasuredWidth()); 2912 2913 // Enforce the width based on actual text widths 2914 mContentView.measure( 2915 View.MeasureSpec.makeMeasureSpec(width, View.MeasureSpec.EXACTLY), 2916 verticalMeasure); 2917 2918 Drawable popupBackground = mPopupWindow.getBackground(); 2919 if (popupBackground != null) { 2920 if (mTempRect == null) mTempRect = new Rect(); 2921 popupBackground.getPadding(mTempRect); 2922 width += mTempRect.left + mTempRect.right; 2923 } 2924 mPopupWindow.setWidth(width); 2925 } 2926 2927 @Override 2928 protected int getTextOffset() { 2929 return mTextView.getSelectionStart(); 2930 } 2931 2932 @Override 2933 protected int getVerticalLocalPosition(int line) { 2934 return mTextView.getLayout().getLineBottom(line); 2935 } 2936 2937 @Override 2938 protected int clipVertically(int positionY) { 2939 final int height = mContentView.getMeasuredHeight(); 2940 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 2941 return Math.min(positionY, displayMetrics.heightPixels - height); 2942 } 2943 2944 private void hideWithCleanUp() { 2945 for (final SuggestionInfo info : mSuggestionInfos) { 2946 info.clear(); 2947 } 2948 mMisspelledSpan = null; 2949 hide(); 2950 } 2951 2952 private boolean updateSuggestions() { 2953 Spannable spannable = (Spannable) mTextView.getText(); 2954 SuggestionSpan[] suggestionSpans = getSuggestionSpans(); 2955 2956 final int nbSpans = suggestionSpans.length; 2957 // Suggestions are shown after a delay: the underlying spans may have been removed 2958 if (nbSpans == 0) return false; 2959 2960 mNumberOfSuggestions = 0; 2961 int spanUnionStart = mTextView.getText().length(); 2962 int spanUnionEnd = 0; 2963 2964 mMisspelledSpan = null; 2965 int underlineColor = 0; 2966 2967 for (int spanIndex = 0; spanIndex < nbSpans; spanIndex++) { 2968 SuggestionSpan suggestionSpan = suggestionSpans[spanIndex]; 2969 final int spanStart = spannable.getSpanStart(suggestionSpan); 2970 final int spanEnd = spannable.getSpanEnd(suggestionSpan); 2971 spanUnionStart = Math.min(spanStart, spanUnionStart); 2972 spanUnionEnd = Math.max(spanEnd, spanUnionEnd); 2973 2974 if ((suggestionSpan.getFlags() & SuggestionSpan.FLAG_MISSPELLED) != 0) { 2975 mMisspelledSpan = suggestionSpan; 2976 } 2977 2978 // The first span dictates the background color of the highlighted text 2979 if (spanIndex == 0) underlineColor = suggestionSpan.getUnderlineColor(); 2980 2981 String[] suggestions = suggestionSpan.getSuggestions(); 2982 int nbSuggestions = suggestions.length; 2983 for (int suggestionIndex = 0; suggestionIndex < nbSuggestions; suggestionIndex++) { 2984 String suggestion = suggestions[suggestionIndex]; 2985 2986 boolean suggestionIsDuplicate = false; 2987 for (int i = 0; i < mNumberOfSuggestions; i++) { 2988 if (mSuggestionInfos[i].text.toString().equals(suggestion)) { 2989 SuggestionSpan otherSuggestionSpan = mSuggestionInfos[i].suggestionSpan; 2990 final int otherSpanStart = spannable.getSpanStart(otherSuggestionSpan); 2991 final int otherSpanEnd = spannable.getSpanEnd(otherSuggestionSpan); 2992 if (spanStart == otherSpanStart && spanEnd == otherSpanEnd) { 2993 suggestionIsDuplicate = true; 2994 break; 2995 } 2996 } 2997 } 2998 2999 if (!suggestionIsDuplicate) { 3000 SuggestionInfo suggestionInfo = mSuggestionInfos[mNumberOfSuggestions]; 3001 suggestionInfo.suggestionSpan = suggestionSpan; 3002 suggestionInfo.suggestionIndex = suggestionIndex; 3003 suggestionInfo.text.replace(0, suggestionInfo.text.length(), suggestion); 3004 3005 mNumberOfSuggestions++; 3006 3007 if (mNumberOfSuggestions == MAX_NUMBER_SUGGESTIONS) { 3008 // Also end outer for loop 3009 spanIndex = nbSpans; 3010 break; 3011 } 3012 } 3013 } 3014 } 3015 3016 for (int i = 0; i < mNumberOfSuggestions; i++) { 3017 highlightTextDifferences(mSuggestionInfos[i], spanUnionStart, spanUnionEnd); 3018 } 3019 3020 // Make "Add to dictionary" item visible if there is a span with the misspelled flag 3021 int addToDictionaryButtonVisibility = View.GONE; 3022 if (mMisspelledSpan != null) { 3023 final int misspelledStart = spannable.getSpanStart(mMisspelledSpan); 3024 final int misspelledEnd = spannable.getSpanEnd(mMisspelledSpan); 3025 if (misspelledStart >= 0 && misspelledEnd > misspelledStart) { 3026 addToDictionaryButtonVisibility = View.VISIBLE; 3027 } 3028 } 3029 mAddToDictionaryButton.setVisibility(addToDictionaryButtonVisibility); 3030 3031 if (mSuggestionRangeSpan == null) mSuggestionRangeSpan = new SuggestionRangeSpan(); 3032 if (underlineColor == 0) { 3033 // Fallback on the default highlight color when the first span does not provide one 3034 mSuggestionRangeSpan.setBackgroundColor(mTextView.mHighlightColor); 3035 } else { 3036 final float BACKGROUND_TRANSPARENCY = 0.4f; 3037 final int newAlpha = (int) (Color.alpha(underlineColor) * BACKGROUND_TRANSPARENCY); 3038 mSuggestionRangeSpan.setBackgroundColor( 3039 (underlineColor & 0x00FFFFFF) + (newAlpha << 24)); 3040 } 3041 spannable.setSpan(mSuggestionRangeSpan, spanUnionStart, spanUnionEnd, 3042 Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 3043 3044 mSuggestionsAdapter.notifyDataSetChanged(); 3045 return true; 3046 } 3047 3048 private void highlightTextDifferences(SuggestionInfo suggestionInfo, int unionStart, 3049 int unionEnd) { 3050 final Spannable text = (Spannable) mTextView.getText(); 3051 final int spanStart = text.getSpanStart(suggestionInfo.suggestionSpan); 3052 final int spanEnd = text.getSpanEnd(suggestionInfo.suggestionSpan); 3053 3054 // Adjust the start/end of the suggestion span 3055 suggestionInfo.suggestionStart = spanStart - unionStart; 3056 suggestionInfo.suggestionEnd = suggestionInfo.suggestionStart 3057 + suggestionInfo.text.length(); 3058 3059 suggestionInfo.text.setSpan(mHighlightSpan, 0, suggestionInfo.text.length(), 3060 Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 3061 3062 // Add the text before and after the span. 3063 final String textAsString = text.toString(); 3064 suggestionInfo.text.insert(0, textAsString.substring(unionStart, spanStart)); 3065 suggestionInfo.text.append(textAsString.substring(spanEnd, unionEnd)); 3066 } 3067 3068 @Override 3069 public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 3070 Editable editable = (Editable) mTextView.getText(); 3071 SuggestionInfo suggestionInfo = mSuggestionInfos[position]; 3072 3073 final int spanStart = editable.getSpanStart(suggestionInfo.suggestionSpan); 3074 final int spanEnd = editable.getSpanEnd(suggestionInfo.suggestionSpan); 3075 if (spanStart < 0 || spanEnd <= spanStart) { 3076 // Span has been removed 3077 hideWithCleanUp(); 3078 return; 3079 } 3080 3081 final String originalText = TextUtils.substring(editable, spanStart, spanEnd); 3082 3083 // SuggestionSpans are removed by replace: save them before 3084 final SuggestionSpan[] suggestionSpans = editable.getSpans(spanStart, spanEnd, 3085 SuggestionSpan.class); 3086 final int length = suggestionSpans.length; 3087 final int[] suggestionSpansStarts = new int[length]; 3088 final int[] suggestionSpansEnds = new int[length]; 3089 final int[] suggestionSpansFlags = new int[length]; 3090 for (int i = 0; i < length; i++) { 3091 final SuggestionSpan suggestionSpan = suggestionSpans[i]; 3092 suggestionSpansStarts[i] = editable.getSpanStart(suggestionSpan); 3093 suggestionSpansEnds[i] = editable.getSpanEnd(suggestionSpan); 3094 suggestionSpansFlags[i] = editable.getSpanFlags(suggestionSpan); 3095 3096 // Remove potential misspelled flags 3097 int suggestionSpanFlags = suggestionSpan.getFlags(); 3098 if ((suggestionSpanFlags & SuggestionSpan.FLAG_MISSPELLED) > 0) { 3099 suggestionSpanFlags &= ~SuggestionSpan.FLAG_MISSPELLED; 3100 suggestionSpanFlags &= ~SuggestionSpan.FLAG_EASY_CORRECT; 3101 suggestionSpan.setFlags(suggestionSpanFlags); 3102 } 3103 } 3104 3105 final int suggestionStart = suggestionInfo.suggestionStart; 3106 final int suggestionEnd = suggestionInfo.suggestionEnd; 3107 final String suggestion = suggestionInfo.text.subSequence( 3108 suggestionStart, suggestionEnd).toString(); 3109 mTextView.replaceText_internal(spanStart, spanEnd, suggestion); 3110 3111 // Notify source IME of the suggestion pick. Do this before 3112 // swaping texts. 3113 suggestionInfo.suggestionSpan.notifySelection( 3114 mTextView.getContext(), originalText, suggestionInfo.suggestionIndex); 3115 3116 // Swap text content between actual text and Suggestion span 3117 final String[] suggestions = suggestionInfo.suggestionSpan.getSuggestions(); 3118 suggestions[suggestionInfo.suggestionIndex] = originalText; 3119 3120 // Restore previous SuggestionSpans 3121 final int lengthDifference = suggestion.length() - (spanEnd - spanStart); 3122 for (int i = 0; i < length; i++) { 3123 // Only spans that include the modified region make sense after replacement 3124 // Spans partially included in the replaced region are removed, there is no 3125 // way to assign them a valid range after replacement 3126 if (suggestionSpansStarts[i] <= spanStart && 3127 suggestionSpansEnds[i] >= spanEnd) { 3128 mTextView.setSpan_internal(suggestionSpans[i], suggestionSpansStarts[i], 3129 suggestionSpansEnds[i] + lengthDifference, suggestionSpansFlags[i]); 3130 } 3131 } 3132 3133 // Move cursor at the end of the replaced word 3134 final int newCursorPosition = spanEnd + lengthDifference; 3135 mTextView.setCursorPosition_internal(newCursorPosition, newCursorPosition); 3136 hideWithCleanUp(); 3137 } 3138 } 3139 3140 /** 3141 * An ActionMode Callback class that is used to provide actions while in text insertion or 3142 * selection mode. 3143 * 3144 * The default callback provides a subset of Select All, Cut, Copy, Paste, Share and Replace 3145 * actions, depending on which of these this TextView supports and the current selection. 3146 */ 3147 private class TextActionModeCallback extends ActionMode.Callback2 { 3148 private final Path mSelectionPath = new Path(); 3149 private final RectF mSelectionBounds = new RectF(); 3150 private final boolean mHasSelection; 3151 3152 private int mHandleHeight; 3153 3154 public TextActionModeCallback(boolean hasSelection) { 3155 mHasSelection = hasSelection; 3156 if (mHasSelection) { 3157 SelectionModifierCursorController selectionController = getSelectionController(); 3158 if (selectionController.mStartHandle == null) { 3159 // As these are for initializing selectionController, hide() must be called. 3160 selectionController.initDrawables(); 3161 selectionController.initHandles(); 3162 selectionController.hide(); 3163 } 3164 mHandleHeight = Math.max( 3165 mSelectHandleLeft.getMinimumHeight(), 3166 mSelectHandleRight.getMinimumHeight()); 3167 } else { 3168 InsertionPointCursorController insertionController = getInsertionController(); 3169 if (insertionController != null) { 3170 insertionController.getHandle(); 3171 mHandleHeight = mSelectHandleCenter.getMinimumHeight(); 3172 } 3173 } 3174 } 3175 3176 @Override 3177 public boolean onCreateActionMode(ActionMode mode, Menu menu) { 3178 mode.setTitle(null); 3179 mode.setSubtitle(null); 3180 mode.setTitleOptionalHint(true); 3181 populateMenuWithItems(menu); 3182 3183 Callback customCallback = getCustomCallback(); 3184 if (customCallback != null) { 3185 if (!customCallback.onCreateActionMode(mode, menu)) { 3186 // The custom mode can choose to cancel the action mode, dismiss selection. 3187 Selection.setSelection((Spannable) mTextView.getText(), 3188 mTextView.getSelectionEnd()); 3189 return false; 3190 } 3191 } 3192 3193 if (mTextView.canProcessText()) { 3194 mProcessTextIntentActionsHandler.onInitializeMenu(menu); 3195 } 3196 3197 if (menu.hasVisibleItems() || mode.getCustomView() != null) { 3198 mTextView.setHasTransientState(true); 3199 return true; 3200 } else { 3201 return false; 3202 } 3203 } 3204 3205 private Callback getCustomCallback() { 3206 return mHasSelection 3207 ? mCustomSelectionActionModeCallback 3208 : mCustomInsertionActionModeCallback; 3209 } 3210 3211 private void populateMenuWithItems(Menu menu) { 3212 if (mTextView.canCut()) { 3213 menu.add(Menu.NONE, TextView.ID_CUT, MENU_ITEM_ORDER_CUT, 3214 com.android.internal.R.string.cut). 3215 setAlphabeticShortcut('x'). 3216 setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS); 3217 } 3218 3219 if (mTextView.canCopy()) { 3220 menu.add(Menu.NONE, TextView.ID_COPY, MENU_ITEM_ORDER_COPY, 3221 com.android.internal.R.string.copy). 3222 setAlphabeticShortcut('c'). 3223 setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS); 3224 } 3225 3226 if (mTextView.canPaste()) { 3227 menu.add(Menu.NONE, TextView.ID_PASTE, MENU_ITEM_ORDER_PASTE, 3228 com.android.internal.R.string.paste). 3229 setAlphabeticShortcut('v'). 3230 setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS); 3231 } 3232 3233 if (mTextView.canShare()) { 3234 menu.add(Menu.NONE, TextView.ID_SHARE, MENU_ITEM_ORDER_SHARE, 3235 com.android.internal.R.string.share). 3236 setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM); 3237 } 3238 3239 updateSelectAllItem(menu); 3240 updateReplaceItem(menu); 3241 } 3242 3243 @Override 3244 public boolean onPrepareActionMode(ActionMode mode, Menu menu) { 3245 updateSelectAllItem(menu); 3246 updateReplaceItem(menu); 3247 3248 Callback customCallback = getCustomCallback(); 3249 if (customCallback != null) { 3250 return customCallback.onPrepareActionMode(mode, menu); 3251 } 3252 return true; 3253 } 3254 3255 private void updateSelectAllItem(Menu menu) { 3256 boolean canSelectAll = mTextView.canSelectAllText(); 3257 boolean selectAllItemExists = menu.findItem(TextView.ID_SELECT_ALL) != null; 3258 if (canSelectAll && !selectAllItemExists) { 3259 menu.add(Menu.NONE, TextView.ID_SELECT_ALL, MENU_ITEM_ORDER_SELECT_ALL, 3260 com.android.internal.R.string.selectAll) 3261 .setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM); 3262 } else if (!canSelectAll && selectAllItemExists) { 3263 menu.removeItem(TextView.ID_SELECT_ALL); 3264 } 3265 } 3266 3267 private void updateReplaceItem(Menu menu) { 3268 boolean canReplace = mTextView.isSuggestionsEnabled() && shouldOfferToShowSuggestions() 3269 && !(mTextView.isInExtractedMode() && mTextView.hasSelection()); 3270 boolean replaceItemExists = menu.findItem(TextView.ID_REPLACE) != null; 3271 if (canReplace && !replaceItemExists) { 3272 menu.add(Menu.NONE, TextView.ID_REPLACE, MENU_ITEM_ORDER_REPLACE, 3273 com.android.internal.R.string.replace) 3274 .setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM); 3275 } else if (!canReplace && replaceItemExists) { 3276 menu.removeItem(TextView.ID_REPLACE); 3277 } 3278 } 3279 3280 @Override 3281 public boolean onActionItemClicked(ActionMode mode, MenuItem item) { 3282 if (mProcessTextIntentActionsHandler.performMenuItemAction(item)) { 3283 return true; 3284 } 3285 Callback customCallback = getCustomCallback(); 3286 if (customCallback != null && customCallback.onActionItemClicked(mode, item)) { 3287 return true; 3288 } 3289 return mTextView.onTextContextMenuItem(item.getItemId()); 3290 } 3291 3292 @Override 3293 public void onDestroyActionMode(ActionMode mode) { 3294 Callback customCallback = getCustomCallback(); 3295 if (customCallback != null) { 3296 customCallback.onDestroyActionMode(mode); 3297 } 3298 3299 /* 3300 * If we're ending this mode because we're detaching from a window, 3301 * we still have selection state to preserve. Don't clear it, we'll 3302 * bring back the selection mode when (if) we get reattached. 3303 */ 3304 if (!mPreserveDetachedSelection) { 3305 Selection.setSelection((Spannable) mTextView.getText(), 3306 mTextView.getSelectionEnd()); 3307 mTextView.setHasTransientState(false); 3308 } 3309 3310 if (mSelectionModifierCursorController != null) { 3311 mSelectionModifierCursorController.hide(); 3312 } 3313 3314 mTextActionMode = null; 3315 } 3316 3317 @Override 3318 public void onGetContentRect(ActionMode mode, View view, Rect outRect) { 3319 if (!view.equals(mTextView) || mTextView.getLayout() == null) { 3320 super.onGetContentRect(mode, view, outRect); 3321 return; 3322 } 3323 if (mTextView.getSelectionStart() != mTextView.getSelectionEnd()) { 3324 // We have a selection. 3325 mSelectionPath.reset(); 3326 mTextView.getLayout().getSelectionPath( 3327 mTextView.getSelectionStart(), mTextView.getSelectionEnd(), mSelectionPath); 3328 mSelectionPath.computeBounds(mSelectionBounds, true); 3329 mSelectionBounds.bottom += mHandleHeight; 3330 } else if (mCursorCount == 2) { 3331 // We have a split cursor. In this case, we take the rectangle that includes both 3332 // parts of the cursor to ensure we don't obscure either of them. 3333 Rect firstCursorBounds = mCursorDrawable[0].getBounds(); 3334 Rect secondCursorBounds = mCursorDrawable[1].getBounds(); 3335 mSelectionBounds.set( 3336 Math.min(firstCursorBounds.left, secondCursorBounds.left), 3337 Math.min(firstCursorBounds.top, secondCursorBounds.top), 3338 Math.max(firstCursorBounds.right, secondCursorBounds.right), 3339 Math.max(firstCursorBounds.bottom, secondCursorBounds.bottom) 3340 + mHandleHeight); 3341 } else { 3342 // We have a single cursor. 3343 Layout layout = getActiveLayout(); 3344 int line = layout.getLineForOffset(mTextView.getSelectionStart()); 3345 float primaryHorizontal = 3346 layout.getPrimaryHorizontal(mTextView.getSelectionStart()); 3347 mSelectionBounds.set( 3348 primaryHorizontal, 3349 layout.getLineTop(line), 3350 primaryHorizontal, 3351 layout.getLineTop(line + 1) + mHandleHeight); 3352 } 3353 // Take TextView's padding and scroll into account. 3354 int textHorizontalOffset = mTextView.viewportToContentHorizontalOffset(); 3355 int textVerticalOffset = mTextView.viewportToContentVerticalOffset(); 3356 outRect.set( 3357 (int) Math.floor(mSelectionBounds.left + textHorizontalOffset), 3358 (int) Math.floor(mSelectionBounds.top + textVerticalOffset), 3359 (int) Math.ceil(mSelectionBounds.right + textHorizontalOffset), 3360 (int) Math.ceil(mSelectionBounds.bottom + textVerticalOffset)); 3361 } 3362 } 3363 3364 /** 3365 * A listener to call {@link InputMethodManager#updateCursorAnchorInfo(View, CursorAnchorInfo)} 3366 * while the input method is requesting the cursor/anchor position. Does nothing as long as 3367 * {@link InputMethodManager#isWatchingCursor(View)} returns false. 3368 */ 3369 private final class CursorAnchorInfoNotifier implements TextViewPositionListener { 3370 final CursorAnchorInfo.Builder mSelectionInfoBuilder = new CursorAnchorInfo.Builder(); 3371 final int[] mTmpIntOffset = new int[2]; 3372 final Matrix mViewToScreenMatrix = new Matrix(); 3373 3374 @Override 3375 public void updatePosition(int parentPositionX, int parentPositionY, 3376 boolean parentPositionChanged, boolean parentScrolled) { 3377 final InputMethodState ims = mInputMethodState; 3378 if (ims == null || ims.mBatchEditNesting > 0) { 3379 return; 3380 } 3381 final InputMethodManager imm = InputMethodManager.peekInstance(); 3382 if (null == imm) { 3383 return; 3384 } 3385 if (!imm.isActive(mTextView)) { 3386 return; 3387 } 3388 // Skip if the IME has not requested the cursor/anchor position. 3389 if (!imm.isCursorAnchorInfoEnabled()) { 3390 return; 3391 } 3392 Layout layout = mTextView.getLayout(); 3393 if (layout == null) { 3394 return; 3395 } 3396 3397 final CursorAnchorInfo.Builder builder = mSelectionInfoBuilder; 3398 builder.reset(); 3399 3400 final int selectionStart = mTextView.getSelectionStart(); 3401 builder.setSelectionRange(selectionStart, mTextView.getSelectionEnd()); 3402 3403 // Construct transformation matrix from view local coordinates to screen coordinates. 3404 mViewToScreenMatrix.set(mTextView.getMatrix()); 3405 mTextView.getLocationOnScreen(mTmpIntOffset); 3406 mViewToScreenMatrix.postTranslate(mTmpIntOffset[0], mTmpIntOffset[1]); 3407 builder.setMatrix(mViewToScreenMatrix); 3408 3409 final float viewportToContentHorizontalOffset = 3410 mTextView.viewportToContentHorizontalOffset(); 3411 final float viewportToContentVerticalOffset = 3412 mTextView.viewportToContentVerticalOffset(); 3413 3414 final CharSequence text = mTextView.getText(); 3415 if (text instanceof Spannable) { 3416 final Spannable sp = (Spannable) text; 3417 int composingTextStart = EditableInputConnection.getComposingSpanStart(sp); 3418 int composingTextEnd = EditableInputConnection.getComposingSpanEnd(sp); 3419 if (composingTextEnd < composingTextStart) { 3420 final int temp = composingTextEnd; 3421 composingTextEnd = composingTextStart; 3422 composingTextStart = temp; 3423 } 3424 final boolean hasComposingText = 3425 (0 <= composingTextStart) && (composingTextStart < composingTextEnd); 3426 if (hasComposingText) { 3427 final CharSequence composingText = text.subSequence(composingTextStart, 3428 composingTextEnd); 3429 builder.setComposingText(composingTextStart, composingText); 3430 3431 final int minLine = layout.getLineForOffset(composingTextStart); 3432 final int maxLine = layout.getLineForOffset(composingTextEnd - 1); 3433 for (int line = minLine; line <= maxLine; ++line) { 3434 final int lineStart = layout.getLineStart(line); 3435 final int lineEnd = layout.getLineEnd(line); 3436 final int offsetStart = Math.max(lineStart, composingTextStart); 3437 final int offsetEnd = Math.min(lineEnd, composingTextEnd); 3438 final boolean ltrLine = 3439 layout.getParagraphDirection(line) == Layout.DIR_LEFT_TO_RIGHT; 3440 final float[] widths = new float[offsetEnd - offsetStart]; 3441 layout.getPaint().getTextWidths(text, offsetStart, offsetEnd, widths); 3442 final float top = layout.getLineTop(line); 3443 final float bottom = layout.getLineBottom(line); 3444 for (int offset = offsetStart; offset < offsetEnd; ++offset) { 3445 final float charWidth = widths[offset - offsetStart]; 3446 final boolean isRtl = layout.isRtlCharAt(offset); 3447 final float primary = layout.getPrimaryHorizontal(offset); 3448 final float secondary = layout.getSecondaryHorizontal(offset); 3449 // TODO: This doesn't work perfectly for text with custom styles and 3450 // TAB chars. 3451 final float left; 3452 final float right; 3453 if (ltrLine) { 3454 if (isRtl) { 3455 left = secondary - charWidth; 3456 right = secondary; 3457 } else { 3458 left = primary; 3459 right = primary + charWidth; 3460 } 3461 } else { 3462 if (!isRtl) { 3463 left = secondary; 3464 right = secondary + charWidth; 3465 } else { 3466 left = primary - charWidth; 3467 right = primary; 3468 } 3469 } 3470 // TODO: Check top-right and bottom-left as well. 3471 final float localLeft = left + viewportToContentHorizontalOffset; 3472 final float localRight = right + viewportToContentHorizontalOffset; 3473 final float localTop = top + viewportToContentVerticalOffset; 3474 final float localBottom = bottom + viewportToContentVerticalOffset; 3475 final boolean isTopLeftVisible = isPositionVisible(localLeft, localTop); 3476 final boolean isBottomRightVisible = 3477 isPositionVisible(localRight, localBottom); 3478 int characterBoundsFlags = 0; 3479 if (isTopLeftVisible || isBottomRightVisible) { 3480 characterBoundsFlags |= CursorAnchorInfo.FLAG_HAS_VISIBLE_REGION; 3481 } 3482 if (!isTopLeftVisible || !isBottomRightVisible) { 3483 characterBoundsFlags |= CursorAnchorInfo.FLAG_HAS_INVISIBLE_REGION; 3484 } 3485 if (isRtl) { 3486 characterBoundsFlags |= CursorAnchorInfo.FLAG_IS_RTL; 3487 } 3488 // Here offset is the index in Java chars. 3489 builder.addCharacterBounds(offset, localLeft, localTop, localRight, 3490 localBottom, characterBoundsFlags); 3491 } 3492 } 3493 } 3494 } 3495 3496 // Treat selectionStart as the insertion point. 3497 if (0 <= selectionStart) { 3498 final int offset = selectionStart; 3499 final int line = layout.getLineForOffset(offset); 3500 final float insertionMarkerX = layout.getPrimaryHorizontal(offset) 3501 + viewportToContentHorizontalOffset; 3502 final float insertionMarkerTop = layout.getLineTop(line) 3503 + viewportToContentVerticalOffset; 3504 final float insertionMarkerBaseline = layout.getLineBaseline(line) 3505 + viewportToContentVerticalOffset; 3506 final float insertionMarkerBottom = layout.getLineBottom(line) 3507 + viewportToContentVerticalOffset; 3508 final boolean isTopVisible = 3509 isPositionVisible(insertionMarkerX, insertionMarkerTop); 3510 final boolean isBottomVisible = 3511 isPositionVisible(insertionMarkerX, insertionMarkerBottom); 3512 int insertionMarkerFlags = 0; 3513 if (isTopVisible || isBottomVisible) { 3514 insertionMarkerFlags |= CursorAnchorInfo.FLAG_HAS_VISIBLE_REGION; 3515 } 3516 if (!isTopVisible || !isBottomVisible) { 3517 insertionMarkerFlags |= CursorAnchorInfo.FLAG_HAS_INVISIBLE_REGION; 3518 } 3519 if (layout.isRtlCharAt(offset)) { 3520 insertionMarkerFlags |= CursorAnchorInfo.FLAG_IS_RTL; 3521 } 3522 builder.setInsertionMarkerLocation(insertionMarkerX, insertionMarkerTop, 3523 insertionMarkerBaseline, insertionMarkerBottom, insertionMarkerFlags); 3524 } 3525 3526 imm.updateCursorAnchorInfo(mTextView, builder.build()); 3527 } 3528 } 3529 3530 @VisibleForTesting 3531 public abstract class HandleView extends View implements TextViewPositionListener { 3532 protected Drawable mDrawable; 3533 protected Drawable mDrawableLtr; 3534 protected Drawable mDrawableRtl; 3535 private final PopupWindow mContainer; 3536 // Position with respect to the parent TextView 3537 private int mPositionX, mPositionY; 3538 private boolean mIsDragging; 3539 // Offset from touch position to mPosition 3540 private float mTouchToWindowOffsetX, mTouchToWindowOffsetY; 3541 protected int mHotspotX; 3542 protected int mHorizontalGravity; 3543 // Offsets the hotspot point up, so that cursor is not hidden by the finger when moving up 3544 private float mTouchOffsetY; 3545 // Where the touch position should be on the handle to ensure a maximum cursor visibility 3546 private float mIdealVerticalOffset; 3547 // Parent's (TextView) previous position in window 3548 private int mLastParentX, mLastParentY; 3549 // Previous text character offset 3550 protected int mPreviousOffset = -1; 3551 // Previous text character offset 3552 private boolean mPositionHasChanged = true; 3553 // Minimum touch target size for handles 3554 private int mMinSize; 3555 // Indicates the line of text that the handle is on. 3556 protected int mPrevLine = UNSET_LINE; 3557 // Indicates the line of text that the user was touching. This can differ from mPrevLine 3558 // when selecting text when the handles jump to the end / start of words which may be on 3559 // a different line. 3560 protected int mPreviousLineTouched = UNSET_LINE; 3561 3562 private HandleView(Drawable drawableLtr, Drawable drawableRtl, final int id) { 3563 super(mTextView.getContext()); 3564 setId(id); 3565 mContainer = new PopupWindow(mTextView.getContext(), null, 3566 com.android.internal.R.attr.textSelectHandleWindowStyle); 3567 mContainer.setSplitTouchEnabled(true); 3568 mContainer.setClippingEnabled(false); 3569 mContainer.setWindowLayoutType(WindowManager.LayoutParams.TYPE_APPLICATION_SUB_PANEL); 3570 mContainer.setWidth(ViewGroup.LayoutParams.WRAP_CONTENT); 3571 mContainer.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT); 3572 mContainer.setContentView(this); 3573 3574 mDrawableLtr = drawableLtr; 3575 mDrawableRtl = drawableRtl; 3576 mMinSize = mTextView.getContext().getResources().getDimensionPixelSize( 3577 com.android.internal.R.dimen.text_handle_min_size); 3578 3579 updateDrawable(); 3580 3581 final int handleHeight = getPreferredHeight(); 3582 mTouchOffsetY = -0.3f * handleHeight; 3583 mIdealVerticalOffset = 0.7f * handleHeight; 3584 } 3585 3586 public float getIdealVerticalOffset() { 3587 return mIdealVerticalOffset; 3588 } 3589 3590 protected void updateDrawable() { 3591 if (mIsDragging) { 3592 // Don't update drawable during dragging. 3593 return; 3594 } 3595 final int offset = getCurrentCursorOffset(); 3596 final boolean isRtlCharAtOffset = mTextView.getLayout().isRtlCharAt(offset); 3597 final Drawable oldDrawable = mDrawable; 3598 mDrawable = isRtlCharAtOffset ? mDrawableRtl : mDrawableLtr; 3599 mHotspotX = getHotspotX(mDrawable, isRtlCharAtOffset); 3600 mHorizontalGravity = getHorizontalGravity(isRtlCharAtOffset); 3601 final Layout layout = mTextView.getLayout(); 3602 if (layout != null && oldDrawable != mDrawable && isShowing()) { 3603 // Update popup window position. 3604 mPositionX = (int) (layout.getPrimaryHorizontal(offset) - 0.5f - mHotspotX - 3605 getHorizontalOffset() + getCursorOffset()); 3606 mPositionX += mTextView.viewportToContentHorizontalOffset(); 3607 mPositionHasChanged = true; 3608 updatePosition(mLastParentX, mLastParentY, false, false); 3609 postInvalidate(); 3610 } 3611 } 3612 3613 protected abstract int getHotspotX(Drawable drawable, boolean isRtlRun); 3614 protected abstract int getHorizontalGravity(boolean isRtlRun); 3615 3616 // Touch-up filter: number of previous positions remembered 3617 private static final int HISTORY_SIZE = 5; 3618 private static final int TOUCH_UP_FILTER_DELAY_AFTER = 150; 3619 private static final int TOUCH_UP_FILTER_DELAY_BEFORE = 350; 3620 private final long[] mPreviousOffsetsTimes = new long[HISTORY_SIZE]; 3621 private final int[] mPreviousOffsets = new int[HISTORY_SIZE]; 3622 private int mPreviousOffsetIndex = 0; 3623 private int mNumberPreviousOffsets = 0; 3624 3625 private void startTouchUpFilter(int offset) { 3626 mNumberPreviousOffsets = 0; 3627 addPositionToTouchUpFilter(offset); 3628 } 3629 3630 private void addPositionToTouchUpFilter(int offset) { 3631 mPreviousOffsetIndex = (mPreviousOffsetIndex + 1) % HISTORY_SIZE; 3632 mPreviousOffsets[mPreviousOffsetIndex] = offset; 3633 mPreviousOffsetsTimes[mPreviousOffsetIndex] = SystemClock.uptimeMillis(); 3634 mNumberPreviousOffsets++; 3635 } 3636 3637 private void filterOnTouchUp() { 3638 final long now = SystemClock.uptimeMillis(); 3639 int i = 0; 3640 int index = mPreviousOffsetIndex; 3641 final int iMax = Math.min(mNumberPreviousOffsets, HISTORY_SIZE); 3642 while (i < iMax && (now - mPreviousOffsetsTimes[index]) < TOUCH_UP_FILTER_DELAY_AFTER) { 3643 i++; 3644 index = (mPreviousOffsetIndex - i + HISTORY_SIZE) % HISTORY_SIZE; 3645 } 3646 3647 if (i > 0 && i < iMax && 3648 (now - mPreviousOffsetsTimes[index]) > TOUCH_UP_FILTER_DELAY_BEFORE) { 3649 positionAtCursorOffset(mPreviousOffsets[index], false); 3650 } 3651 } 3652 3653 public boolean offsetHasBeenChanged() { 3654 return mNumberPreviousOffsets > 1; 3655 } 3656 3657 @Override 3658 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 3659 setMeasuredDimension(getPreferredWidth(), getPreferredHeight()); 3660 } 3661 3662 private int getPreferredWidth() { 3663 return Math.max(mDrawable.getIntrinsicWidth(), mMinSize); 3664 } 3665 3666 private int getPreferredHeight() { 3667 return Math.max(mDrawable.getIntrinsicHeight(), mMinSize); 3668 } 3669 3670 public void show() { 3671 if (isShowing()) return; 3672 3673 getPositionListener().addSubscriber(this, true /* local position may change */); 3674 3675 // Make sure the offset is always considered new, even when focusing at same position 3676 mPreviousOffset = -1; 3677 positionAtCursorOffset(getCurrentCursorOffset(), false); 3678 } 3679 3680 protected void dismiss() { 3681 mIsDragging = false; 3682 mContainer.dismiss(); 3683 onDetached(); 3684 } 3685 3686 public void hide() { 3687 dismiss(); 3688 3689 getPositionListener().removeSubscriber(this); 3690 } 3691 3692 public boolean isShowing() { 3693 return mContainer.isShowing(); 3694 } 3695 3696 private boolean isVisible() { 3697 // Always show a dragging handle. 3698 if (mIsDragging) { 3699 return true; 3700 } 3701 3702 if (mTextView.isInBatchEditMode()) { 3703 return false; 3704 } 3705 3706 return isPositionVisible(mPositionX + mHotspotX + getHorizontalOffset(), mPositionY); 3707 } 3708 3709 public abstract int getCurrentCursorOffset(); 3710 3711 protected abstract void updateSelection(int offset); 3712 3713 public abstract void updatePosition(float x, float y); 3714 3715 protected void positionAtCursorOffset(int offset, boolean parentScrolled) { 3716 // A HandleView relies on the layout, which may be nulled by external methods 3717 Layout layout = mTextView.getLayout(); 3718 if (layout == null) { 3719 // Will update controllers' state, hiding them and stopping selection mode if needed 3720 prepareCursorControllers(); 3721 return; 3722 } 3723 layout = getActiveLayout(); 3724 3725 boolean offsetChanged = offset != mPreviousOffset; 3726 if (offsetChanged || parentScrolled) { 3727 if (offsetChanged) { 3728 updateSelection(offset); 3729 addPositionToTouchUpFilter(offset); 3730 } 3731 final int line = layout.getLineForOffset(offset); 3732 mPrevLine = line; 3733 3734 mPositionX = (int) (layout.getPrimaryHorizontal(offset) - 0.5f - mHotspotX - 3735 getHorizontalOffset() + getCursorOffset()); 3736 mPositionY = layout.getLineBottom(line); 3737 3738 // Take TextView's padding and scroll into account. 3739 mPositionX += mTextView.viewportToContentHorizontalOffset(); 3740 mPositionY += mTextView.viewportToContentVerticalOffset(); 3741 3742 mPreviousOffset = offset; 3743 mPositionHasChanged = true; 3744 } 3745 } 3746 3747 public void updatePosition(int parentPositionX, int parentPositionY, 3748 boolean parentPositionChanged, boolean parentScrolled) { 3749 positionAtCursorOffset(getCurrentCursorOffset(), parentScrolled); 3750 if (parentPositionChanged || mPositionHasChanged) { 3751 if (mIsDragging) { 3752 // Update touchToWindow offset in case of parent scrolling while dragging 3753 if (parentPositionX != mLastParentX || parentPositionY != mLastParentY) { 3754 mTouchToWindowOffsetX += parentPositionX - mLastParentX; 3755 mTouchToWindowOffsetY += parentPositionY - mLastParentY; 3756 mLastParentX = parentPositionX; 3757 mLastParentY = parentPositionY; 3758 } 3759 3760 onHandleMoved(); 3761 } 3762 3763 if (isVisible()) { 3764 final int positionX = parentPositionX + mPositionX; 3765 final int positionY = parentPositionY + mPositionY; 3766 if (isShowing()) { 3767 mContainer.update(positionX, positionY, -1, -1); 3768 } else { 3769 mContainer.showAtLocation(mTextView, Gravity.NO_GRAVITY, 3770 positionX, positionY); 3771 } 3772 } else { 3773 if (isShowing()) { 3774 dismiss(); 3775 } 3776 } 3777 3778 mPositionHasChanged = false; 3779 } 3780 } 3781 3782 public void showAtLocation(int offset) { 3783 // TODO - investigate if there's a better way to show the handles 3784 // after the drag accelerator has occured. 3785 int[] tmpCords = new int[2]; 3786 mTextView.getLocationInWindow(tmpCords); 3787 3788 Layout layout = mTextView.getLayout(); 3789 int posX = tmpCords[0]; 3790 int posY = tmpCords[1]; 3791 3792 final int line = layout.getLineForOffset(offset); 3793 3794 int startX = (int) (layout.getPrimaryHorizontal(offset) - 0.5f 3795 - mHotspotX - getHorizontalOffset() + getCursorOffset()); 3796 int startY = layout.getLineBottom(line); 3797 3798 // Take TextView's padding and scroll into account. 3799 startX += mTextView.viewportToContentHorizontalOffset(); 3800 startY += mTextView.viewportToContentVerticalOffset(); 3801 3802 mContainer.showAtLocation(mTextView, Gravity.NO_GRAVITY, 3803 startX + posX, startY + posY); 3804 } 3805 3806 @Override 3807 protected void onDraw(Canvas c) { 3808 final int drawWidth = mDrawable.getIntrinsicWidth(); 3809 final int left = getHorizontalOffset(); 3810 3811 mDrawable.setBounds(left, 0, left + drawWidth, mDrawable.getIntrinsicHeight()); 3812 mDrawable.draw(c); 3813 } 3814 3815 private int getHorizontalOffset() { 3816 final int width = getPreferredWidth(); 3817 final int drawWidth = mDrawable.getIntrinsicWidth(); 3818 final int left; 3819 switch (mHorizontalGravity) { 3820 case Gravity.LEFT: 3821 left = 0; 3822 break; 3823 default: 3824 case Gravity.CENTER: 3825 left = (width - drawWidth) / 2; 3826 break; 3827 case Gravity.RIGHT: 3828 left = width - drawWidth; 3829 break; 3830 } 3831 return left; 3832 } 3833 3834 protected int getCursorOffset() { 3835 return 0; 3836 } 3837 3838 @Override 3839 public boolean onTouchEvent(MotionEvent ev) { 3840 updateFloatingToolbarVisibility(ev); 3841 3842 switch (ev.getActionMasked()) { 3843 case MotionEvent.ACTION_DOWN: { 3844 startTouchUpFilter(getCurrentCursorOffset()); 3845 mTouchToWindowOffsetX = ev.getRawX() - mPositionX; 3846 mTouchToWindowOffsetY = ev.getRawY() - mPositionY; 3847 3848 final PositionListener positionListener = getPositionListener(); 3849 mLastParentX = positionListener.getPositionX(); 3850 mLastParentY = positionListener.getPositionY(); 3851 mIsDragging = true; 3852 mPreviousLineTouched = UNSET_LINE; 3853 break; 3854 } 3855 3856 case MotionEvent.ACTION_MOVE: { 3857 final float rawX = ev.getRawX(); 3858 final float rawY = ev.getRawY(); 3859 3860 // Vertical hysteresis: vertical down movement tends to snap to ideal offset 3861 final float previousVerticalOffset = mTouchToWindowOffsetY - mLastParentY; 3862 final float currentVerticalOffset = rawY - mPositionY - mLastParentY; 3863 float newVerticalOffset; 3864 if (previousVerticalOffset < mIdealVerticalOffset) { 3865 newVerticalOffset = Math.min(currentVerticalOffset, mIdealVerticalOffset); 3866 newVerticalOffset = Math.max(newVerticalOffset, previousVerticalOffset); 3867 } else { 3868 newVerticalOffset = Math.max(currentVerticalOffset, mIdealVerticalOffset); 3869 newVerticalOffset = Math.min(newVerticalOffset, previousVerticalOffset); 3870 } 3871 mTouchToWindowOffsetY = newVerticalOffset + mLastParentY; 3872 3873 final float newPosX = 3874 rawX - mTouchToWindowOffsetX + mHotspotX + getHorizontalOffset(); 3875 final float newPosY = rawY - mTouchToWindowOffsetY + mTouchOffsetY; 3876 3877 updatePosition(newPosX, newPosY); 3878 break; 3879 } 3880 3881 case MotionEvent.ACTION_UP: 3882 filterOnTouchUp(); 3883 mIsDragging = false; 3884 updateDrawable(); 3885 break; 3886 3887 case MotionEvent.ACTION_CANCEL: 3888 mIsDragging = false; 3889 updateDrawable(); 3890 break; 3891 } 3892 return true; 3893 } 3894 3895 public boolean isDragging() { 3896 return mIsDragging; 3897 } 3898 3899 void onHandleMoved() {} 3900 3901 public void onDetached() {} 3902 } 3903 3904 /** 3905 * Returns the active layout (hint or text layout). Note that the text layout can be null. 3906 */ 3907 private Layout getActiveLayout() { 3908 Layout layout = mTextView.getLayout(); 3909 Layout hintLayout = mTextView.getHintLayout(); 3910 if (TextUtils.isEmpty(layout.getText()) && hintLayout != null && 3911 !TextUtils.isEmpty(hintLayout.getText())) { 3912 layout = hintLayout; 3913 } 3914 return layout; 3915 } 3916 3917 private class InsertionHandleView extends HandleView { 3918 private static final int DELAY_BEFORE_HANDLE_FADES_OUT = 4000; 3919 private static final int RECENT_CUT_COPY_DURATION = 15 * 1000; // seconds 3920 3921 // Used to detect taps on the insertion handle, which will affect the insertion action mode 3922 private float mDownPositionX, mDownPositionY; 3923 private Runnable mHider; 3924 3925 public InsertionHandleView(Drawable drawable) { 3926 super(drawable, drawable, com.android.internal.R.id.insertion_handle); 3927 } 3928 3929 @Override 3930 public void show() { 3931 super.show(); 3932 3933 final long durationSinceCutOrCopy = 3934 SystemClock.uptimeMillis() - TextView.sLastCutCopyOrTextChangedTime; 3935 3936 // Cancel the single tap delayed runnable. 3937 if (mInsertionActionModeRunnable != null 3938 && (mDoubleTap || isCursorInsideEasyCorrectionSpan())) { 3939 mTextView.removeCallbacks(mInsertionActionModeRunnable); 3940 } 3941 3942 // Prepare and schedule the single tap runnable to run exactly after the double tap 3943 // timeout has passed. 3944 if (!mDoubleTap && !isCursorInsideEasyCorrectionSpan() 3945 && (durationSinceCutOrCopy < RECENT_CUT_COPY_DURATION)) { 3946 if (mTextActionMode == null) { 3947 if (mInsertionActionModeRunnable == null) { 3948 mInsertionActionModeRunnable = new Runnable() { 3949 @Override 3950 public void run() { 3951 startInsertionActionMode(); 3952 } 3953 }; 3954 } 3955 mTextView.postDelayed( 3956 mInsertionActionModeRunnable, 3957 ViewConfiguration.getDoubleTapTimeout() + 1); 3958 } 3959 3960 } 3961 3962 hideAfterDelay(); 3963 } 3964 3965 private void hideAfterDelay() { 3966 if (mHider == null) { 3967 mHider = new Runnable() { 3968 public void run() { 3969 hide(); 3970 } 3971 }; 3972 } else { 3973 removeHiderCallback(); 3974 } 3975 mTextView.postDelayed(mHider, DELAY_BEFORE_HANDLE_FADES_OUT); 3976 } 3977 3978 private void removeHiderCallback() { 3979 if (mHider != null) { 3980 mTextView.removeCallbacks(mHider); 3981 } 3982 } 3983 3984 @Override 3985 protected int getHotspotX(Drawable drawable, boolean isRtlRun) { 3986 return drawable.getIntrinsicWidth() / 2; 3987 } 3988 3989 @Override 3990 protected int getHorizontalGravity(boolean isRtlRun) { 3991 return Gravity.CENTER_HORIZONTAL; 3992 } 3993 3994 @Override 3995 protected int getCursorOffset() { 3996 int offset = super.getCursorOffset(); 3997 final Drawable cursor = mCursorCount > 0 ? mCursorDrawable[0] : null; 3998 if (cursor != null) { 3999 cursor.getPadding(mTempRect); 4000 offset += (cursor.getIntrinsicWidth() - mTempRect.left - mTempRect.right) / 2; 4001 } 4002 return offset; 4003 } 4004 4005 @Override 4006 public boolean onTouchEvent(MotionEvent ev) { 4007 final boolean result = super.onTouchEvent(ev); 4008 4009 switch (ev.getActionMasked()) { 4010 case MotionEvent.ACTION_DOWN: 4011 mDownPositionX = ev.getRawX(); 4012 mDownPositionY = ev.getRawY(); 4013 break; 4014 4015 case MotionEvent.ACTION_UP: 4016 if (!offsetHasBeenChanged()) { 4017 final float deltaX = mDownPositionX - ev.getRawX(); 4018 final float deltaY = mDownPositionY - ev.getRawY(); 4019 final float distanceSquared = deltaX * deltaX + deltaY * deltaY; 4020 4021 final ViewConfiguration viewConfiguration = ViewConfiguration.get( 4022 mTextView.getContext()); 4023 final int touchSlop = viewConfiguration.getScaledTouchSlop(); 4024 4025 if (distanceSquared < touchSlop * touchSlop) { 4026 // Tapping on the handle toggles the insertion action mode. 4027 if (mTextActionMode != null) { 4028 mTextActionMode.finish(); 4029 } else { 4030 startInsertionActionMode(); 4031 } 4032 } 4033 } else { 4034 if (mTextActionMode != null) { 4035 mTextActionMode.invalidateContentRect(); 4036 } 4037 } 4038 hideAfterDelay(); 4039 break; 4040 4041 case MotionEvent.ACTION_CANCEL: 4042 hideAfterDelay(); 4043 break; 4044 4045 default: 4046 break; 4047 } 4048 4049 return result; 4050 } 4051 4052 @Override 4053 public int getCurrentCursorOffset() { 4054 return mTextView.getSelectionStart(); 4055 } 4056 4057 @Override 4058 public void updateSelection(int offset) { 4059 Selection.setSelection((Spannable) mTextView.getText(), offset); 4060 } 4061 4062 @Override 4063 public void updatePosition(float x, float y) { 4064 Layout layout = mTextView.getLayout(); 4065 int offset; 4066 if (layout != null) { 4067 if (mPreviousLineTouched == UNSET_LINE) { 4068 mPreviousLineTouched = mTextView.getLineAtCoordinate(y); 4069 } 4070 int currLine = getCurrentLineAdjustedForSlop(layout, mPreviousLineTouched, y); 4071 offset = mTextView.getOffsetAtCoordinate(currLine, x); 4072 mPreviousLineTouched = currLine; 4073 } else { 4074 offset = mTextView.getOffsetForPosition(x, y); 4075 } 4076 positionAtCursorOffset(offset, false); 4077 if (mTextActionMode != null) { 4078 mTextActionMode.invalidate(); 4079 } 4080 } 4081 4082 @Override 4083 void onHandleMoved() { 4084 super.onHandleMoved(); 4085 removeHiderCallback(); 4086 } 4087 4088 @Override 4089 public void onDetached() { 4090 super.onDetached(); 4091 removeHiderCallback(); 4092 } 4093 } 4094 4095 @Retention(RetentionPolicy.SOURCE) 4096 @IntDef({HANDLE_TYPE_SELECTION_START, HANDLE_TYPE_SELECTION_END}) 4097 public @interface HandleType {} 4098 public static final int HANDLE_TYPE_SELECTION_START = 0; 4099 public static final int HANDLE_TYPE_SELECTION_END = 1; 4100 4101 private class SelectionHandleView extends HandleView { 4102 // Indicates the handle type, selection start (HANDLE_TYPE_SELECTION_START) or selection 4103 // end (HANDLE_TYPE_SELECTION_END). 4104 @HandleType 4105 private final int mHandleType; 4106 // Indicates whether the cursor is making adjustments within a word. 4107 private boolean mInWord = false; 4108 // Difference between touch position and word boundary position. 4109 private float mTouchWordDelta; 4110 // X value of the previous updatePosition call. 4111 private float mPrevX; 4112 // Indicates if the handle has moved a boundary between LTR and RTL text. 4113 private boolean mLanguageDirectionChanged = false; 4114 // Distance from edge of horizontally scrolling text view 4115 // to use to switch to character mode. 4116 private final float mTextViewEdgeSlop; 4117 // Used to save text view location. 4118 private final int[] mTextViewLocation = new int[2]; 4119 4120 public SelectionHandleView(Drawable drawableLtr, Drawable drawableRtl, int id, 4121 @HandleType int handleType) { 4122 super(drawableLtr, drawableRtl, id); 4123 mHandleType = handleType; 4124 ViewConfiguration viewConfiguration = ViewConfiguration.get(mTextView.getContext()); 4125 mTextViewEdgeSlop = viewConfiguration.getScaledTouchSlop() * 4; 4126 } 4127 4128 private boolean isStartHandle() { 4129 return mHandleType == HANDLE_TYPE_SELECTION_START; 4130 } 4131 4132 @Override 4133 protected int getHotspotX(Drawable drawable, boolean isRtlRun) { 4134 if (isRtlRun == isStartHandle()) { 4135 return drawable.getIntrinsicWidth() / 4; 4136 } else { 4137 return (drawable.getIntrinsicWidth() * 3) / 4; 4138 } 4139 } 4140 4141 @Override 4142 protected int getHorizontalGravity(boolean isRtlRun) { 4143 return (isRtlRun == isStartHandle()) ? Gravity.LEFT : Gravity.RIGHT; 4144 } 4145 4146 @Override 4147 public int getCurrentCursorOffset() { 4148 return isStartHandle() ? mTextView.getSelectionStart() : mTextView.getSelectionEnd(); 4149 } 4150 4151 @Override 4152 protected void updateSelection(int offset) { 4153 if (isStartHandle()) { 4154 Selection.setSelection((Spannable) mTextView.getText(), offset, 4155 mTextView.getSelectionEnd()); 4156 } else { 4157 Selection.setSelection((Spannable) mTextView.getText(), 4158 mTextView.getSelectionStart(), offset); 4159 } 4160 updateDrawable(); 4161 if (mTextActionMode != null) { 4162 mTextActionMode.invalidate(); 4163 } 4164 } 4165 4166 @Override 4167 public void updatePosition(float x, float y) { 4168 final Layout layout = mTextView.getLayout(); 4169 if (layout == null) { 4170 // HandleView will deal appropriately in positionAtCursorOffset when 4171 // layout is null. 4172 positionAndAdjustForCrossingHandles(mTextView.getOffsetForPosition(x, y)); 4173 return; 4174 } 4175 4176 if (mPreviousLineTouched == UNSET_LINE) { 4177 mPreviousLineTouched = mTextView.getLineAtCoordinate(y); 4178 } 4179 4180 boolean positionCursor = false; 4181 final int anotherHandleOffset = 4182 isStartHandle() ? mTextView.getSelectionEnd() : mTextView.getSelectionStart(); 4183 int currLine = getCurrentLineAdjustedForSlop(layout, mPreviousLineTouched, y); 4184 int initialOffset = mTextView.getOffsetAtCoordinate(currLine, x); 4185 4186 if (isStartHandle() && initialOffset >= anotherHandleOffset 4187 || !isStartHandle() && initialOffset <= anotherHandleOffset) { 4188 // Handles have crossed, bound it to the first selected line and 4189 // adjust by word / char as normal. 4190 currLine = layout.getLineForOffset(anotherHandleOffset); 4191 initialOffset = mTextView.getOffsetAtCoordinate(currLine, x); 4192 } 4193 4194 int offset = initialOffset; 4195 final int wordEnd = getWordEnd(offset); 4196 final int wordStart = getWordStart(offset); 4197 4198 if (mPrevX == UNSET_X_VALUE) { 4199 mPrevX = x; 4200 } 4201 4202 final int currentOffset = getCurrentCursorOffset(); 4203 final boolean rtlAtCurrentOffset = layout.isRtlCharAt(currentOffset); 4204 final boolean atRtl = layout.isRtlCharAt(offset); 4205 final boolean isLvlBoundary = layout.isLevelBoundary(offset); 4206 4207 // We can't determine if the user is expanding or shrinking the selection if they're 4208 // on a bi-di boundary, so until they've moved past the boundary we'll just place 4209 // the cursor at the current position. 4210 if (isLvlBoundary || (rtlAtCurrentOffset && !atRtl) || (!rtlAtCurrentOffset && atRtl)) { 4211 // We're on a boundary or this is the first direction change -- just update 4212 // to the current position. 4213 mLanguageDirectionChanged = true; 4214 mTouchWordDelta = 0.0f; 4215 positionAndAdjustForCrossingHandles(offset); 4216 return; 4217 } else if (mLanguageDirectionChanged && !isLvlBoundary) { 4218 // We've just moved past the boundary so update the position. After this we can 4219 // figure out if the user is expanding or shrinking to go by word or character. 4220 positionAndAdjustForCrossingHandles(offset); 4221 mTouchWordDelta = 0.0f; 4222 mLanguageDirectionChanged = false; 4223 return; 4224 } 4225 4226 boolean isExpanding; 4227 final float xDiff = x - mPrevX; 4228 if (atRtl == isStartHandle()) { 4229 isExpanding = xDiff > 0 || currLine > mPreviousLineTouched; 4230 } else { 4231 isExpanding = xDiff < 0 || currLine < mPreviousLineTouched; 4232 } 4233 4234 if (mTextView.getHorizontallyScrolling()) { 4235 if (positionNearEdgeOfScrollingView(x, atRtl) 4236 && ((isStartHandle() && mTextView.getScrollX() != 0) 4237 || (!isStartHandle() 4238 && mTextView.canScrollHorizontally(atRtl ? -1 : 1))) 4239 && ((isExpanding && ((isStartHandle() && offset < currentOffset) 4240 || (!isStartHandle() && offset > currentOffset))) 4241 || !isExpanding)) { 4242 // If we're expanding ensure that the offset is actually expanding compared to 4243 // the current offset, if the handle snapped to the word, the finger position 4244 // may be out of sync and we don't want the selection to jump back. 4245 mTouchWordDelta = 0.0f; 4246 final int nextOffset = (atRtl == isStartHandle()) 4247 ? layout.getOffsetToRightOf(mPreviousOffset) 4248 : layout.getOffsetToLeftOf(mPreviousOffset); 4249 positionAndAdjustForCrossingHandles(nextOffset); 4250 return; 4251 } 4252 } 4253 4254 if (isExpanding) { 4255 // User is increasing the selection. 4256 final boolean snapToWord = !mInWord 4257 || (isStartHandle() ? currLine < mPrevLine : currLine > mPrevLine); 4258 if (snapToWord) { 4259 // Sometimes words can be broken across lines (Chinese, hyphenation). 4260 // We still snap to the word boundary but we only use the letters on the 4261 // current line to determine if the user is far enough into the word to snap. 4262 int wordBoundary = isStartHandle() ? wordStart : wordEnd; 4263 if (layout != null && layout.getLineForOffset(wordBoundary) != currLine) { 4264 wordBoundary = isStartHandle() ? 4265 layout.getLineStart(currLine) : layout.getLineEnd(currLine); 4266 } 4267 final int offsetThresholdToSnap = isStartHandle() 4268 ? wordEnd - ((wordEnd - wordBoundary) / 2) 4269 : wordStart + ((wordBoundary - wordStart) / 2); 4270 if (isStartHandle() 4271 && (offset <= offsetThresholdToSnap || currLine < mPrevLine)) { 4272 // User is far enough into the word or on a different line so we expand by 4273 // word. 4274 offset = wordStart; 4275 } else if (!isStartHandle() 4276 && (offset >= offsetThresholdToSnap || currLine > mPrevLine)) { 4277 // User is far enough into the word or on a different line so we expand by 4278 // word. 4279 offset = wordEnd; 4280 } else { 4281 offset = mPreviousOffset; 4282 } 4283 } 4284 if (layout != null && (isStartHandle() && offset < initialOffset) 4285 || (!isStartHandle() && offset > initialOffset)) { 4286 final float adjustedX = layout.getPrimaryHorizontal(offset); 4287 mTouchWordDelta = 4288 mTextView.convertToLocalHorizontalCoordinate(x) - adjustedX; 4289 } else { 4290 mTouchWordDelta = 0.0f; 4291 } 4292 positionCursor = true; 4293 } else { 4294 final int adjustedOffset = 4295 mTextView.getOffsetAtCoordinate(currLine, x - mTouchWordDelta); 4296 final boolean shrinking = isStartHandle() 4297 ? adjustedOffset > mPreviousOffset || currLine > mPrevLine 4298 : adjustedOffset < mPreviousOffset || currLine < mPrevLine; 4299 if (shrinking) { 4300 // User is shrinking the selection. 4301 if (currLine != mPrevLine) { 4302 // We're on a different line, so we'll snap to word boundaries. 4303 offset = isStartHandle() ? wordStart : wordEnd; 4304 if (layout != null && (isStartHandle() && offset < initialOffset) 4305 || (!isStartHandle() && offset > initialOffset)) { 4306 final float adjustedX = layout.getPrimaryHorizontal(offset); 4307 mTouchWordDelta = 4308 mTextView.convertToLocalHorizontalCoordinate(x) - adjustedX; 4309 } else { 4310 mTouchWordDelta = 0.0f; 4311 } 4312 } else { 4313 offset = adjustedOffset; 4314 } 4315 positionCursor = true; 4316 } else if ((isStartHandle() && adjustedOffset < mPreviousOffset) 4317 || (!isStartHandle() && adjustedOffset > mPreviousOffset)) { 4318 // Handle has jumped to the word boundary, and the user is moving 4319 // their finger towards the handle, the delta should be updated. 4320 mTouchWordDelta = mTextView.convertToLocalHorizontalCoordinate(x) - 4321 layout.getPrimaryHorizontal(mPreviousOffset); 4322 } 4323 } 4324 4325 if (positionCursor) { 4326 mPreviousLineTouched = currLine; 4327 positionAndAdjustForCrossingHandles(offset); 4328 } 4329 mPrevX = x; 4330 } 4331 4332 /** 4333 * @param offset Cursor offset. Must be in [-1, length]. 4334 * @param parentScrolled If the parent has been scrolled or not. 4335 */ 4336 @Override 4337 protected void positionAtCursorOffset(int offset, boolean parentScrolled) { 4338 super.positionAtCursorOffset(offset, parentScrolled); 4339 mInWord = (offset != -1) && !getWordIteratorWithText().isBoundary(offset); 4340 } 4341 4342 @Override 4343 public boolean onTouchEvent(MotionEvent event) { 4344 boolean superResult = super.onTouchEvent(event); 4345 if (event.getActionMasked() == MotionEvent.ACTION_DOWN) { 4346 // Reset the touch word offset and x value when the user 4347 // re-engages the handle. 4348 mTouchWordDelta = 0.0f; 4349 mPrevX = UNSET_X_VALUE; 4350 } 4351 return superResult; 4352 } 4353 4354 private void positionAndAdjustForCrossingHandles(int offset) { 4355 final int anotherHandleOffset = 4356 isStartHandle() ? mTextView.getSelectionEnd() : mTextView.getSelectionStart(); 4357 if ((isStartHandle() && offset >= anotherHandleOffset) 4358 || (!isStartHandle() && offset <= anotherHandleOffset)) { 4359 // Handles can not cross and selection is at least one character. 4360 offset = getNextCursorOffset(anotherHandleOffset, !isStartHandle()); 4361 mTouchWordDelta = 0.0f; 4362 } 4363 positionAtCursorOffset(offset, false); 4364 } 4365 4366 private boolean positionNearEdgeOfScrollingView(float x, boolean atRtl) { 4367 mTextView.getLocationOnScreen(mTextViewLocation); 4368 boolean nearEdge; 4369 if (atRtl == isStartHandle()) { 4370 int rightEdge = mTextViewLocation[0] + mTextView.getWidth() 4371 - mTextView.getPaddingRight(); 4372 nearEdge = x > rightEdge - mTextViewEdgeSlop; 4373 } else { 4374 int leftEdge = mTextViewLocation[0] + mTextView.getPaddingLeft(); 4375 nearEdge = x < leftEdge + mTextViewEdgeSlop; 4376 } 4377 return nearEdge; 4378 } 4379 } 4380 4381 private int getCurrentLineAdjustedForSlop(Layout layout, int prevLine, float y) { 4382 final int trueLine = mTextView.getLineAtCoordinate(y); 4383 if (layout == null || prevLine > layout.getLineCount() 4384 || layout.getLineCount() <= 0 || prevLine < 0) { 4385 // Invalid parameters, just return whatever line is at y. 4386 return trueLine; 4387 } 4388 4389 if (Math.abs(trueLine - prevLine) >= 2) { 4390 // Only stick to lines if we're within a line of the previous selection. 4391 return trueLine; 4392 } 4393 4394 final float verticalOffset = mTextView.viewportToContentVerticalOffset(); 4395 final int lineCount = layout.getLineCount(); 4396 final float slop = mTextView.getLineHeight() * LINE_SLOP_MULTIPLIER_FOR_HANDLEVIEWS; 4397 4398 final float firstLineTop = layout.getLineTop(0) + verticalOffset; 4399 final float prevLineTop = layout.getLineTop(prevLine) + verticalOffset; 4400 final float yTopBound = Math.max(prevLineTop - slop, firstLineTop + slop); 4401 4402 final float lastLineBottom = layout.getLineBottom(lineCount - 1) + verticalOffset; 4403 final float prevLineBottom = layout.getLineBottom(prevLine) + verticalOffset; 4404 final float yBottomBound = Math.min(prevLineBottom + slop, lastLineBottom - slop); 4405 4406 // Determine if we've moved lines based on y position and previous line. 4407 int currLine; 4408 if (y <= yTopBound) { 4409 currLine = Math.max(prevLine - 1, 0); 4410 } else if (y >= yBottomBound) { 4411 currLine = Math.min(prevLine + 1, lineCount - 1); 4412 } else { 4413 currLine = prevLine; 4414 } 4415 return currLine; 4416 } 4417 4418 /** 4419 * A CursorController instance can be used to control a cursor in the text. 4420 */ 4421 private interface CursorController extends ViewTreeObserver.OnTouchModeChangeListener { 4422 /** 4423 * Makes the cursor controller visible on screen. 4424 * See also {@link #hide()}. 4425 */ 4426 public void show(); 4427 4428 /** 4429 * Hide the cursor controller from screen. 4430 * See also {@link #show()}. 4431 */ 4432 public void hide(); 4433 4434 /** 4435 * Called when the view is detached from window. Perform house keeping task, such as 4436 * stopping Runnable thread that would otherwise keep a reference on the context, thus 4437 * preventing the activity from being recycled. 4438 */ 4439 public void onDetached(); 4440 } 4441 4442 private class InsertionPointCursorController implements CursorController { 4443 private InsertionHandleView mHandle; 4444 4445 public void show() { 4446 getHandle().show(); 4447 4448 if (mSelectionModifierCursorController != null) { 4449 mSelectionModifierCursorController.hide(); 4450 } 4451 } 4452 4453 public void hide() { 4454 if (mHandle != null) { 4455 mHandle.hide(); 4456 } 4457 } 4458 4459 public void onTouchModeChanged(boolean isInTouchMode) { 4460 if (!isInTouchMode) { 4461 hide(); 4462 } 4463 } 4464 4465 private InsertionHandleView getHandle() { 4466 if (mSelectHandleCenter == null) { 4467 mSelectHandleCenter = mTextView.getContext().getDrawable( 4468 mTextView.mTextSelectHandleRes); 4469 } 4470 if (mHandle == null) { 4471 mHandle = new InsertionHandleView(mSelectHandleCenter); 4472 } 4473 return mHandle; 4474 } 4475 4476 @Override 4477 public void onDetached() { 4478 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 4479 observer.removeOnTouchModeChangeListener(this); 4480 4481 if (mHandle != null) mHandle.onDetached(); 4482 } 4483 } 4484 4485 class SelectionModifierCursorController implements CursorController { 4486 // The cursor controller handles, lazily created when shown. 4487 private SelectionHandleView mStartHandle; 4488 private SelectionHandleView mEndHandle; 4489 // The offsets of that last touch down event. Remembered to start selection there. 4490 private int mMinTouchOffset, mMaxTouchOffset; 4491 4492 private float mDownPositionX, mDownPositionY; 4493 private boolean mGestureStayedInTapRegion; 4494 4495 // Where the user first starts the drag motion. 4496 private int mStartOffset = -1; 4497 4498 private boolean mHaventMovedEnoughToStartDrag; 4499 // The line that a selection happened most recently with the drag accelerator. 4500 private int mLineSelectionIsOn = -1; 4501 // Whether the drag accelerator has selected past the initial line. 4502 private boolean mSwitchedLines = false; 4503 4504 // Indicates the drag accelerator mode that the user is currently using. 4505 private int mDragAcceleratorMode = DRAG_ACCELERATOR_MODE_INACTIVE; 4506 // Drag accelerator is inactive. 4507 private static final int DRAG_ACCELERATOR_MODE_INACTIVE = 0; 4508 // Character based selection by dragging. Only for mouse. 4509 private static final int DRAG_ACCELERATOR_MODE_CHARACTER = 1; 4510 // Word based selection by dragging. Enabled after long pressing or double tapping. 4511 private static final int DRAG_ACCELERATOR_MODE_WORD = 2; 4512 4513 SelectionModifierCursorController() { 4514 resetTouchOffsets(); 4515 } 4516 4517 public void show() { 4518 if (mTextView.isInBatchEditMode()) { 4519 return; 4520 } 4521 initDrawables(); 4522 initHandles(); 4523 } 4524 4525 private void initDrawables() { 4526 if (mSelectHandleLeft == null) { 4527 mSelectHandleLeft = mTextView.getContext().getDrawable( 4528 mTextView.mTextSelectHandleLeftRes); 4529 } 4530 if (mSelectHandleRight == null) { 4531 mSelectHandleRight = mTextView.getContext().getDrawable( 4532 mTextView.mTextSelectHandleRightRes); 4533 } 4534 } 4535 4536 private void initHandles() { 4537 // Lazy object creation has to be done before updatePosition() is called. 4538 if (mStartHandle == null) { 4539 mStartHandle = new SelectionHandleView(mSelectHandleLeft, mSelectHandleRight, 4540 com.android.internal.R.id.selection_start_handle, 4541 HANDLE_TYPE_SELECTION_START); 4542 } 4543 if (mEndHandle == null) { 4544 mEndHandle = new SelectionHandleView(mSelectHandleRight, mSelectHandleLeft, 4545 com.android.internal.R.id.selection_end_handle, 4546 HANDLE_TYPE_SELECTION_END); 4547 } 4548 4549 mStartHandle.show(); 4550 mEndHandle.show(); 4551 4552 hideInsertionPointCursorController(); 4553 } 4554 4555 public void hide() { 4556 if (mStartHandle != null) mStartHandle.hide(); 4557 if (mEndHandle != null) mEndHandle.hide(); 4558 } 4559 4560 public void enterDrag(int dragAcceleratorMode) { 4561 // Just need to init the handles / hide insertion cursor. 4562 show(); 4563 mDragAcceleratorMode = dragAcceleratorMode; 4564 // Start location of selection. 4565 mStartOffset = mTextView.getOffsetForPosition(mLastDownPositionX, 4566 mLastDownPositionY); 4567 mLineSelectionIsOn = mTextView.getLineAtCoordinate(mLastDownPositionY); 4568 // Don't show the handles until user has lifted finger. 4569 hide(); 4570 4571 // This stops scrolling parents from intercepting the touch event, allowing 4572 // the user to continue dragging across the screen to select text; TextView will 4573 // scroll as necessary. 4574 mTextView.getParent().requestDisallowInterceptTouchEvent(true); 4575 mTextView.cancelLongPress(); 4576 } 4577 4578 public void onTouchEvent(MotionEvent event) { 4579 // This is done even when the View does not have focus, so that long presses can start 4580 // selection and tap can move cursor from this tap position. 4581 final float eventX = event.getX(); 4582 final float eventY = event.getY(); 4583 final boolean isMouse = event.isFromSource(InputDevice.SOURCE_MOUSE); 4584 switch (event.getActionMasked()) { 4585 case MotionEvent.ACTION_DOWN: 4586 if (extractedTextModeWillBeStarted()) { 4587 // Prevent duplicating the selection handles until the mode starts. 4588 hide(); 4589 } else { 4590 // Remember finger down position, to be able to start selection from there. 4591 mMinTouchOffset = mMaxTouchOffset = mTextView.getOffsetForPosition( 4592 eventX, eventY); 4593 4594 // Double tap detection 4595 if (mGestureStayedInTapRegion) { 4596 if (mDoubleTap) { 4597 final float deltaX = eventX - mDownPositionX; 4598 final float deltaY = eventY - mDownPositionY; 4599 final float distanceSquared = deltaX * deltaX + deltaY * deltaY; 4600 4601 ViewConfiguration viewConfiguration = ViewConfiguration.get( 4602 mTextView.getContext()); 4603 int doubleTapSlop = viewConfiguration.getScaledDoubleTapSlop(); 4604 boolean stayedInArea = 4605 distanceSquared < doubleTapSlop * doubleTapSlop; 4606 4607 if (stayedInArea && (isMouse || isPositionOnText(eventX, eventY))) { 4608 selectCurrentWordAndStartDrag(); 4609 mDiscardNextActionUp = true; 4610 } 4611 } 4612 } 4613 4614 mDownPositionX = eventX; 4615 mDownPositionY = eventY; 4616 mGestureStayedInTapRegion = true; 4617 mHaventMovedEnoughToStartDrag = true; 4618 } 4619 break; 4620 4621 case MotionEvent.ACTION_POINTER_DOWN: 4622 case MotionEvent.ACTION_POINTER_UP: 4623 // Handle multi-point gestures. Keep min and max offset positions. 4624 // Only activated for devices that correctly handle multi-touch. 4625 if (mTextView.getContext().getPackageManager().hasSystemFeature( 4626 PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH_DISTINCT)) { 4627 updateMinAndMaxOffsets(event); 4628 } 4629 break; 4630 4631 case MotionEvent.ACTION_MOVE: 4632 final ViewConfiguration viewConfig = ViewConfiguration.get( 4633 mTextView.getContext()); 4634 final int touchSlop = viewConfig.getScaledTouchSlop(); 4635 4636 if (mGestureStayedInTapRegion || mHaventMovedEnoughToStartDrag) { 4637 final float deltaX = eventX - mDownPositionX; 4638 final float deltaY = eventY - mDownPositionY; 4639 final float distanceSquared = deltaX * deltaX + deltaY * deltaY; 4640 4641 if (mGestureStayedInTapRegion) { 4642 int doubleTapTouchSlop = viewConfig.getScaledDoubleTapTouchSlop(); 4643 mGestureStayedInTapRegion = 4644 distanceSquared <= doubleTapTouchSlop * doubleTapTouchSlop; 4645 } 4646 if (mHaventMovedEnoughToStartDrag) { 4647 // We don't start dragging until the user has moved enough. 4648 mHaventMovedEnoughToStartDrag = 4649 distanceSquared <= touchSlop * touchSlop; 4650 } 4651 } 4652 4653 if (isMouse && !isDragAcceleratorActive()) { 4654 final int offset = mTextView.getOffsetForPosition(eventX, eventY); 4655 if (mStartOffset != offset) { 4656 // Start character based drag accelerator. 4657 if (mTextActionMode != null) { 4658 mTextActionMode.finish(); 4659 } 4660 enterDrag(DRAG_ACCELERATOR_MODE_CHARACTER); 4661 mDiscardNextActionUp = true; 4662 mHaventMovedEnoughToStartDrag = false; 4663 } 4664 } 4665 4666 if (mStartHandle != null && mStartHandle.isShowing()) { 4667 // Don't do the drag if the handles are showing already. 4668 break; 4669 } 4670 4671 updateSelection(event); 4672 break; 4673 4674 case MotionEvent.ACTION_UP: 4675 if (!isDragAcceleratorActive()) { 4676 break; 4677 } 4678 updateSelection(event); 4679 4680 // No longer dragging to select text, let the parent intercept events. 4681 mTextView.getParent().requestDisallowInterceptTouchEvent(false); 4682 4683 int startOffset = mTextView.getSelectionStart(); 4684 int endOffset = mTextView.getSelectionEnd(); 4685 4686 // Since we don't let drag handles pass once they're visible, we need to 4687 // make sure the start / end locations are correct because the user *can* 4688 // switch directions during the initial drag. 4689 if (endOffset < startOffset) { 4690 int tmp = endOffset; 4691 endOffset = startOffset; 4692 startOffset = tmp; 4693 4694 // Also update the selection with the right offsets in this case. 4695 Selection.setSelection((Spannable) mTextView.getText(), 4696 startOffset, endOffset); 4697 } 4698 if (startOffset != endOffset) { 4699 mStartHandle.showAtLocation(startOffset); 4700 mEndHandle.showAtLocation(endOffset); 4701 startSelectionActionMode(); 4702 } 4703 4704 // No longer the first dragging motion, reset. 4705 resetDragAcceleratorState(); 4706 break; 4707 } 4708 } 4709 4710 private void updateSelection(MotionEvent event) { 4711 if (mTextView.getLayout() != null) { 4712 switch (mDragAcceleratorMode) { 4713 case DRAG_ACCELERATOR_MODE_CHARACTER: 4714 updateCharacterBasedSelection(event); 4715 break; 4716 case DRAG_ACCELERATOR_MODE_WORD: 4717 updateWordBasedSelection(event); 4718 break; 4719 } 4720 } 4721 } 4722 4723 private void updateCharacterBasedSelection(MotionEvent event) { 4724 final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); 4725 Selection.setSelection((Spannable) mTextView.getText(), mStartOffset, offset); 4726 } 4727 4728 private void updateWordBasedSelection(MotionEvent event) { 4729 if (mHaventMovedEnoughToStartDrag) { 4730 return; 4731 } 4732 final boolean isMouse = event.isFromSource(InputDevice.SOURCE_MOUSE); 4733 final ViewConfiguration viewConfig = ViewConfiguration.get( 4734 mTextView.getContext()); 4735 final float eventX = event.getX(); 4736 final float eventY = event.getY(); 4737 final int currLine; 4738 if (isMouse) { 4739 // No need to offset the y coordinate for mouse input. 4740 currLine = mTextView.getLineAtCoordinate(eventY); 4741 } else { 4742 float y = eventY; 4743 if (mSwitchedLines) { 4744 // Offset the finger by the same vertical offset as the handles. 4745 // This improves visibility of the content being selected by 4746 // shifting the finger below the content, this is applied once 4747 // the user has switched lines. 4748 final int touchSlop = viewConfig.getScaledTouchSlop(); 4749 final float fingerOffset = (mStartHandle != null) 4750 ? mStartHandle.getIdealVerticalOffset() 4751 : touchSlop; 4752 y = eventY - fingerOffset; 4753 } 4754 4755 currLine = getCurrentLineAdjustedForSlop(mTextView.getLayout(), mLineSelectionIsOn, 4756 y); 4757 if (!mSwitchedLines && currLine != mLineSelectionIsOn) { 4758 // Break early here, we want to offset the finger position from 4759 // the selection highlight, once the user moved their finger 4760 // to a different line we should apply the offset and *not* switch 4761 // lines until recomputing the position with the finger offset. 4762 mSwitchedLines = true; 4763 return; 4764 } 4765 } 4766 4767 int startOffset; 4768 int offset = mTextView.getOffsetAtCoordinate(currLine, eventX); 4769 // Snap to word boundaries. 4770 if (mStartOffset < offset) { 4771 // Expanding with end handle. 4772 offset = getWordEnd(offset); 4773 startOffset = getWordStart(mStartOffset); 4774 } else { 4775 // Expanding with start handle. 4776 offset = getWordStart(offset); 4777 startOffset = getWordEnd(mStartOffset); 4778 } 4779 mLineSelectionIsOn = currLine; 4780 Selection.setSelection((Spannable) mTextView.getText(), 4781 startOffset, offset); 4782 } 4783 /** 4784 * @param event 4785 */ 4786 private void updateMinAndMaxOffsets(MotionEvent event) { 4787 int pointerCount = event.getPointerCount(); 4788 for (int index = 0; index < pointerCount; index++) { 4789 int offset = mTextView.getOffsetForPosition(event.getX(index), event.getY(index)); 4790 if (offset < mMinTouchOffset) mMinTouchOffset = offset; 4791 if (offset > mMaxTouchOffset) mMaxTouchOffset = offset; 4792 } 4793 } 4794 4795 public int getMinTouchOffset() { 4796 return mMinTouchOffset; 4797 } 4798 4799 public int getMaxTouchOffset() { 4800 return mMaxTouchOffset; 4801 } 4802 4803 public void resetTouchOffsets() { 4804 mMinTouchOffset = mMaxTouchOffset = -1; 4805 resetDragAcceleratorState(); 4806 } 4807 4808 private void resetDragAcceleratorState() { 4809 mStartOffset = -1; 4810 mDragAcceleratorMode = DRAG_ACCELERATOR_MODE_INACTIVE; 4811 mSwitchedLines = false; 4812 } 4813 4814 /** 4815 * @return true iff this controller is currently used to move the selection start. 4816 */ 4817 public boolean isSelectionStartDragged() { 4818 return mStartHandle != null && mStartHandle.isDragging(); 4819 } 4820 4821 /** 4822 * @return true if the user is selecting text using the drag accelerator. 4823 */ 4824 public boolean isDragAcceleratorActive() { 4825 return mDragAcceleratorMode != DRAG_ACCELERATOR_MODE_INACTIVE; 4826 } 4827 4828 public void onTouchModeChanged(boolean isInTouchMode) { 4829 if (!isInTouchMode) { 4830 hide(); 4831 } 4832 } 4833 4834 @Override 4835 public void onDetached() { 4836 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 4837 observer.removeOnTouchModeChangeListener(this); 4838 4839 if (mStartHandle != null) mStartHandle.onDetached(); 4840 if (mEndHandle != null) mEndHandle.onDetached(); 4841 } 4842 } 4843 4844 private class CorrectionHighlighter { 4845 private final Path mPath = new Path(); 4846 private final Paint mPaint = new Paint(Paint.ANTI_ALIAS_FLAG); 4847 private int mStart, mEnd; 4848 private long mFadingStartTime; 4849 private RectF mTempRectF; 4850 private final static int FADE_OUT_DURATION = 400; 4851 4852 public CorrectionHighlighter() { 4853 mPaint.setCompatibilityScaling(mTextView.getResources().getCompatibilityInfo(). 4854 applicationScale); 4855 mPaint.setStyle(Paint.Style.FILL); 4856 } 4857 4858 public void highlight(CorrectionInfo info) { 4859 mStart = info.getOffset(); 4860 mEnd = mStart + info.getNewText().length(); 4861 mFadingStartTime = SystemClock.uptimeMillis(); 4862 4863 if (mStart < 0 || mEnd < 0) { 4864 stopAnimation(); 4865 } 4866 } 4867 4868 public void draw(Canvas canvas, int cursorOffsetVertical) { 4869 if (updatePath() && updatePaint()) { 4870 if (cursorOffsetVertical != 0) { 4871 canvas.translate(0, cursorOffsetVertical); 4872 } 4873 4874 canvas.drawPath(mPath, mPaint); 4875 4876 if (cursorOffsetVertical != 0) { 4877 canvas.translate(0, -cursorOffsetVertical); 4878 } 4879 invalidate(true); // TODO invalidate cursor region only 4880 } else { 4881 stopAnimation(); 4882 invalidate(false); // TODO invalidate cursor region only 4883 } 4884 } 4885 4886 private boolean updatePaint() { 4887 final long duration = SystemClock.uptimeMillis() - mFadingStartTime; 4888 if (duration > FADE_OUT_DURATION) return false; 4889 4890 final float coef = 1.0f - (float) duration / FADE_OUT_DURATION; 4891 final int highlightColorAlpha = Color.alpha(mTextView.mHighlightColor); 4892 final int color = (mTextView.mHighlightColor & 0x00FFFFFF) + 4893 ((int) (highlightColorAlpha * coef) << 24); 4894 mPaint.setColor(color); 4895 return true; 4896 } 4897 4898 private boolean updatePath() { 4899 final Layout layout = mTextView.getLayout(); 4900 if (layout == null) return false; 4901 4902 // Update in case text is edited while the animation is run 4903 final int length = mTextView.getText().length(); 4904 int start = Math.min(length, mStart); 4905 int end = Math.min(length, mEnd); 4906 4907 mPath.reset(); 4908 layout.getSelectionPath(start, end, mPath); 4909 return true; 4910 } 4911 4912 private void invalidate(boolean delayed) { 4913 if (mTextView.getLayout() == null) return; 4914 4915 if (mTempRectF == null) mTempRectF = new RectF(); 4916 mPath.computeBounds(mTempRectF, false); 4917 4918 int left = mTextView.getCompoundPaddingLeft(); 4919 int top = mTextView.getExtendedPaddingTop() + mTextView.getVerticalOffset(true); 4920 4921 if (delayed) { 4922 mTextView.postInvalidateOnAnimation( 4923 left + (int) mTempRectF.left, top + (int) mTempRectF.top, 4924 left + (int) mTempRectF.right, top + (int) mTempRectF.bottom); 4925 } else { 4926 mTextView.postInvalidate((int) mTempRectF.left, (int) mTempRectF.top, 4927 (int) mTempRectF.right, (int) mTempRectF.bottom); 4928 } 4929 } 4930 4931 private void stopAnimation() { 4932 Editor.this.mCorrectionHighlighter = null; 4933 } 4934 } 4935 4936 private static class ErrorPopup extends PopupWindow { 4937 private boolean mAbove = false; 4938 private final TextView mView; 4939 private int mPopupInlineErrorBackgroundId = 0; 4940 private int mPopupInlineErrorAboveBackgroundId = 0; 4941 4942 ErrorPopup(TextView v, int width, int height) { 4943 super(v, width, height); 4944 mView = v; 4945 // Make sure the TextView has a background set as it will be used the first time it is 4946 // shown and positioned. Initialized with below background, which should have 4947 // dimensions identical to the above version for this to work (and is more likely). 4948 mPopupInlineErrorBackgroundId = getResourceId(mPopupInlineErrorBackgroundId, 4949 com.android.internal.R.styleable.Theme_errorMessageBackground); 4950 mView.setBackgroundResource(mPopupInlineErrorBackgroundId); 4951 } 4952 4953 void fixDirection(boolean above) { 4954 mAbove = above; 4955 4956 if (above) { 4957 mPopupInlineErrorAboveBackgroundId = 4958 getResourceId(mPopupInlineErrorAboveBackgroundId, 4959 com.android.internal.R.styleable.Theme_errorMessageAboveBackground); 4960 } else { 4961 mPopupInlineErrorBackgroundId = getResourceId(mPopupInlineErrorBackgroundId, 4962 com.android.internal.R.styleable.Theme_errorMessageBackground); 4963 } 4964 4965 mView.setBackgroundResource(above ? mPopupInlineErrorAboveBackgroundId : 4966 mPopupInlineErrorBackgroundId); 4967 } 4968 4969 private int getResourceId(int currentId, int index) { 4970 if (currentId == 0) { 4971 TypedArray styledAttributes = mView.getContext().obtainStyledAttributes( 4972 R.styleable.Theme); 4973 currentId = styledAttributes.getResourceId(index, 0); 4974 styledAttributes.recycle(); 4975 } 4976 return currentId; 4977 } 4978 4979 @Override 4980 public void update(int x, int y, int w, int h, boolean force) { 4981 super.update(x, y, w, h, force); 4982 4983 boolean above = isAboveAnchor(); 4984 if (above != mAbove) { 4985 fixDirection(above); 4986 } 4987 } 4988 } 4989 4990 static class InputContentType { 4991 int imeOptions = EditorInfo.IME_NULL; 4992 String privateImeOptions; 4993 CharSequence imeActionLabel; 4994 int imeActionId; 4995 Bundle extras; 4996 OnEditorActionListener onEditorActionListener; 4997 boolean enterDown; 4998 } 4999 5000 static class InputMethodState { 5001 ExtractedTextRequest mExtractedTextRequest; 5002 final ExtractedText mExtractedText = new ExtractedText(); 5003 int mBatchEditNesting; 5004 boolean mCursorChanged; 5005 boolean mSelectionModeChanged; 5006 boolean mContentChanged; 5007 int mChangedStart, mChangedEnd, mChangedDelta; 5008 } 5009 5010 /** 5011 * @return True iff (start, end) is a valid range within the text. 5012 */ 5013 private static boolean isValidRange(CharSequence text, int start, int end) { 5014 return 0 <= start && start <= end && end <= text.length(); 5015 } 5016 5017 @VisibleForTesting 5018 public SuggestionsPopupWindow getSuggestionsPopupWindowForTesting() { 5019 return mSuggestionsPopupWindow; 5020 } 5021 5022 /** 5023 * An InputFilter that monitors text input to maintain undo history. It does not modify the 5024 * text being typed (and hence always returns null from the filter() method). 5025 */ 5026 public static class UndoInputFilter implements InputFilter { 5027 private final Editor mEditor; 5028 5029 // Whether the current filter pass is directly caused by an end-user text edit. 5030 private boolean mIsUserEdit; 5031 5032 // Whether the text field is handling an IME composition. Must be parceled in case the user 5033 // rotates the screen during composition. 5034 private boolean mHasComposition; 5035 5036 public UndoInputFilter(Editor editor) { 5037 mEditor = editor; 5038 } 5039 5040 public void saveInstanceState(Parcel parcel) { 5041 parcel.writeInt(mIsUserEdit ? 1 : 0); 5042 parcel.writeInt(mHasComposition ? 1 : 0); 5043 } 5044 5045 public void restoreInstanceState(Parcel parcel) { 5046 mIsUserEdit = parcel.readInt() != 0; 5047 mHasComposition = parcel.readInt() != 0; 5048 } 5049 5050 /** 5051 * Signals that a user-triggered edit is starting. 5052 */ 5053 public void beginBatchEdit() { 5054 if (DEBUG_UNDO) Log.d(TAG, "beginBatchEdit"); 5055 mIsUserEdit = true; 5056 } 5057 5058 public void endBatchEdit() { 5059 if (DEBUG_UNDO) Log.d(TAG, "endBatchEdit"); 5060 mIsUserEdit = false; 5061 } 5062 5063 @Override 5064 public CharSequence filter(CharSequence source, int start, int end, 5065 Spanned dest, int dstart, int dend) { 5066 if (DEBUG_UNDO) { 5067 Log.d(TAG, "filter: source=" + source + " (" + start + "-" + end + ") " + 5068 "dest=" + dest + " (" + dstart + "-" + dend + ")"); 5069 } 5070 5071 // Check to see if this edit should be tracked for undo. 5072 if (!canUndoEdit(source, start, end, dest, dstart, dend)) { 5073 return null; 5074 } 5075 5076 // Check for and handle IME composition edits. 5077 if (handleCompositionEdit(source, start, end, dstart)) { 5078 return null; 5079 } 5080 5081 // Handle keyboard edits. 5082 handleKeyboardEdit(source, start, end, dest, dstart, dend); 5083 return null; 5084 } 5085 5086 /** 5087 * Returns true iff the edit was handled, either because it should be ignored or because 5088 * this function created an undo operation for it. 5089 */ 5090 private boolean handleCompositionEdit(CharSequence source, int start, int end, int dstart) { 5091 // Ignore edits while the user is composing. 5092 if (isComposition(source)) { 5093 mHasComposition = true; 5094 return true; 5095 } 5096 final boolean hadComposition = mHasComposition; 5097 mHasComposition = false; 5098 5099 // Check for the transition out of the composing state. 5100 if (hadComposition) { 5101 // If there was no text the user canceled composition. Ignore the edit. 5102 if (start == end) { 5103 return true; 5104 } 5105 5106 // Otherwise the user inserted the composition. 5107 String newText = TextUtils.substring(source, start, end); 5108 EditOperation edit = new EditOperation(mEditor, "", dstart, newText); 5109 recordEdit(edit, false /* forceMerge */); 5110 return true; 5111 } 5112 5113 // This was neither a composition event nor a transition out of composing. 5114 return false; 5115 } 5116 5117 private void handleKeyboardEdit(CharSequence source, int start, int end, 5118 Spanned dest, int dstart, int dend) { 5119 // An application may install a TextWatcher to provide additional modifications after 5120 // the initial input filters run (e.g. a credit card formatter that adds spaces to a 5121 // string). This results in multiple filter() calls for what the user considers to be 5122 // a single operation. Always undo the whole set of changes in one step. 5123 final boolean forceMerge = isInTextWatcher(); 5124 5125 // Build a new operation with all the information from this edit. 5126 String newText = TextUtils.substring(source, start, end); 5127 String oldText = TextUtils.substring(dest, dstart, dend); 5128 EditOperation edit = new EditOperation(mEditor, oldText, dstart, newText); 5129 recordEdit(edit, forceMerge); 5130 } 5131 5132 /** 5133 * Fetches the last undo operation and checks to see if a new edit should be merged into it. 5134 * If forceMerge is true then the new edit is always merged. 5135 */ 5136 private void recordEdit(EditOperation edit, boolean forceMerge) { 5137 // Fetch the last edit operation and attempt to merge in the new edit. 5138 final UndoManager um = mEditor.mUndoManager; 5139 um.beginUpdate("Edit text"); 5140 EditOperation lastEdit = um.getLastOperation( 5141 EditOperation.class, mEditor.mUndoOwner, UndoManager.MERGE_MODE_UNIQUE); 5142 if (lastEdit == null) { 5143 // Add this as the first edit. 5144 if (DEBUG_UNDO) Log.d(TAG, "filter: adding first op " + edit); 5145 um.addOperation(edit, UndoManager.MERGE_MODE_NONE); 5146 } else if (forceMerge) { 5147 // Forced merges take priority because they could be the result of a non-user-edit 5148 // change and this case should not create a new undo operation. 5149 if (DEBUG_UNDO) Log.d(TAG, "filter: force merge " + edit); 5150 lastEdit.forceMergeWith(edit); 5151 } else if (!mIsUserEdit) { 5152 // An application directly modified the Editable outside of a text edit. Treat this 5153 // as a new change and don't attempt to merge. 5154 if (DEBUG_UNDO) Log.d(TAG, "non-user edit, new op " + edit); 5155 um.commitState(mEditor.mUndoOwner); 5156 um.addOperation(edit, UndoManager.MERGE_MODE_NONE); 5157 } else if (lastEdit.mergeWith(edit)) { 5158 // Merge succeeded, nothing else to do. 5159 if (DEBUG_UNDO) Log.d(TAG, "filter: merge succeeded, created " + lastEdit); 5160 } else { 5161 // Could not merge with the last edit, so commit the last edit and add this edit. 5162 if (DEBUG_UNDO) Log.d(TAG, "filter: merge failed, adding " + edit); 5163 um.commitState(mEditor.mUndoOwner); 5164 um.addOperation(edit, UndoManager.MERGE_MODE_NONE); 5165 } 5166 um.endUpdate(); 5167 } 5168 5169 private boolean canUndoEdit(CharSequence source, int start, int end, 5170 Spanned dest, int dstart, int dend) { 5171 if (!mEditor.mAllowUndo) { 5172 if (DEBUG_UNDO) Log.d(TAG, "filter: undo is disabled"); 5173 return false; 5174 } 5175 5176 if (mEditor.mUndoManager.isInUndo()) { 5177 if (DEBUG_UNDO) Log.d(TAG, "filter: skipping, currently performing undo/redo"); 5178 return false; 5179 } 5180 5181 // Text filters run before input operations are applied. However, some input operations 5182 // are invalid and will throw exceptions when applied. This is common in tests. Don't 5183 // attempt to undo invalid operations. 5184 if (!isValidRange(source, start, end) || !isValidRange(dest, dstart, dend)) { 5185 if (DEBUG_UNDO) Log.d(TAG, "filter: invalid op"); 5186 return false; 5187 } 5188 5189 // Earlier filters can rewrite input to be a no-op, for example due to a length limit 5190 // on an input field. Skip no-op changes. 5191 if (start == end && dstart == dend) { 5192 if (DEBUG_UNDO) Log.d(TAG, "filter: skipping no-op"); 5193 return false; 5194 } 5195 5196 return true; 5197 } 5198 5199 private boolean isComposition(CharSequence source) { 5200 if (!(source instanceof Spannable)) { 5201 return false; 5202 } 5203 // This is a composition edit if the source has a non-zero-length composing span. 5204 Spannable text = (Spannable) source; 5205 int composeBegin = EditableInputConnection.getComposingSpanStart(text); 5206 int composeEnd = EditableInputConnection.getComposingSpanEnd(text); 5207 return composeBegin < composeEnd; 5208 } 5209 5210 private boolean isInTextWatcher() { 5211 CharSequence text = mEditor.mTextView.getText(); 5212 return (text instanceof SpannableStringBuilder) 5213 && ((SpannableStringBuilder) text).getTextWatcherDepth() > 0; 5214 } 5215 } 5216 5217 /** 5218 * An operation to undo a single "edit" to a text view. 5219 */ 5220 public static class EditOperation extends UndoOperation<Editor> { 5221 private static final int TYPE_INSERT = 0; 5222 private static final int TYPE_DELETE = 1; 5223 private static final int TYPE_REPLACE = 2; 5224 5225 private int mType; 5226 private String mOldText; 5227 private int mOldTextStart; 5228 private String mNewText; 5229 private int mNewTextStart; 5230 5231 private int mOldCursorPos; 5232 private int mNewCursorPos; 5233 5234 /** 5235 * Constructs an edit operation from a text input operation on editor that replaces the 5236 * oldText starting at dstart with newText. 5237 */ 5238 public EditOperation(Editor editor, String oldText, int dstart, String newText) { 5239 super(editor.mUndoOwner); 5240 mOldText = oldText; 5241 mNewText = newText; 5242 5243 // Determine the type of the edit and store where it occurred. Avoid storing 5244 // irrevelant data (e.g. mNewTextStart for a delete) because that makes the 5245 // merging logic more complex (e.g. merging deletes could lead to mNewTextStart being 5246 // outside the bounds of the final text). 5247 if (mNewText.length() > 0 && mOldText.length() == 0) { 5248 mType = TYPE_INSERT; 5249 mNewTextStart = dstart; 5250 } else if (mNewText.length() == 0 && mOldText.length() > 0) { 5251 mType = TYPE_DELETE; 5252 mOldTextStart = dstart; 5253 } else { 5254 mType = TYPE_REPLACE; 5255 mOldTextStart = mNewTextStart = dstart; 5256 } 5257 5258 // Store cursor data. 5259 mOldCursorPos = editor.mTextView.getSelectionStart(); 5260 mNewCursorPos = dstart + mNewText.length(); 5261 } 5262 5263 public EditOperation(Parcel src, ClassLoader loader) { 5264 super(src, loader); 5265 mType = src.readInt(); 5266 mOldText = src.readString(); 5267 mOldTextStart = src.readInt(); 5268 mNewText = src.readString(); 5269 mNewTextStart = src.readInt(); 5270 mOldCursorPos = src.readInt(); 5271 mNewCursorPos = src.readInt(); 5272 } 5273 5274 @Override 5275 public void writeToParcel(Parcel dest, int flags) { 5276 dest.writeInt(mType); 5277 dest.writeString(mOldText); 5278 dest.writeInt(mOldTextStart); 5279 dest.writeString(mNewText); 5280 dest.writeInt(mNewTextStart); 5281 dest.writeInt(mOldCursorPos); 5282 dest.writeInt(mNewCursorPos); 5283 } 5284 5285 private int getNewTextEnd() { 5286 return mNewTextStart + mNewText.length(); 5287 } 5288 5289 private int getOldTextEnd() { 5290 return mOldTextStart + mOldText.length(); 5291 } 5292 5293 @Override 5294 public void commit() { 5295 } 5296 5297 @Override 5298 public void undo() { 5299 if (DEBUG_UNDO) Log.d(TAG, "undo"); 5300 // Remove the new text and insert the old. 5301 Editor editor = getOwnerData(); 5302 Editable text = (Editable) editor.mTextView.getText(); 5303 modifyText(text, mNewTextStart, getNewTextEnd(), mOldText, mOldTextStart, 5304 mOldCursorPos); 5305 } 5306 5307 @Override 5308 public void redo() { 5309 if (DEBUG_UNDO) Log.d(TAG, "redo"); 5310 // Remove the old text and insert the new. 5311 Editor editor = getOwnerData(); 5312 Editable text = (Editable) editor.mTextView.getText(); 5313 modifyText(text, mOldTextStart, getOldTextEnd(), mNewText, mNewTextStart, 5314 mNewCursorPos); 5315 } 5316 5317 /** 5318 * Attempts to merge this existing operation with a new edit. 5319 * @param edit The new edit operation. 5320 * @return If the merge succeeded, returns true. Otherwise returns false and leaves this 5321 * object unchanged. 5322 */ 5323 private boolean mergeWith(EditOperation edit) { 5324 if (DEBUG_UNDO) { 5325 Log.d(TAG, "mergeWith old " + this); 5326 Log.d(TAG, "mergeWith new " + edit); 5327 } 5328 switch (mType) { 5329 case TYPE_INSERT: 5330 return mergeInsertWith(edit); 5331 case TYPE_DELETE: 5332 return mergeDeleteWith(edit); 5333 case TYPE_REPLACE: 5334 return mergeReplaceWith(edit); 5335 default: 5336 return false; 5337 } 5338 } 5339 5340 private boolean mergeInsertWith(EditOperation edit) { 5341 // Only merge continuous insertions. 5342 if (edit.mType != TYPE_INSERT) { 5343 return false; 5344 } 5345 // Only merge insertions that are contiguous. 5346 if (getNewTextEnd() != edit.mNewTextStart) { 5347 return false; 5348 } 5349 mNewText += edit.mNewText; 5350 mNewCursorPos = edit.mNewCursorPos; 5351 return true; 5352 } 5353 5354 // TODO: Support forward delete. 5355 private boolean mergeDeleteWith(EditOperation edit) { 5356 // Only merge continuous deletes. 5357 if (edit.mType != TYPE_DELETE) { 5358 return false; 5359 } 5360 // Only merge deletions that are contiguous. 5361 if (mOldTextStart != edit.getOldTextEnd()) { 5362 return false; 5363 } 5364 mOldTextStart = edit.mOldTextStart; 5365 mOldText = edit.mOldText + mOldText; 5366 mNewCursorPos = edit.mNewCursorPos; 5367 return true; 5368 } 5369 5370 private boolean mergeReplaceWith(EditOperation edit) { 5371 // Replacements can merge only with adjacent inserts. 5372 if (edit.mType != TYPE_INSERT || getNewTextEnd() != edit.mNewTextStart) { 5373 return false; 5374 } 5375 mOldText += edit.mOldText; 5376 mNewText += edit.mNewText; 5377 mNewCursorPos = edit.mNewCursorPos; 5378 return true; 5379 } 5380 5381 /** 5382 * Forcibly creates a single merged edit operation by simulating the entire text 5383 * contents being replaced. 5384 */ 5385 public void forceMergeWith(EditOperation edit) { 5386 if (DEBUG_UNDO) Log.d(TAG, "forceMerge"); 5387 Editor editor = getOwnerData(); 5388 5389 // Copy the text of the current field. 5390 // NOTE: Using StringBuilder instead of SpannableStringBuilder would be somewhat faster, 5391 // but would require two parallel implementations of modifyText() because Editable and 5392 // StringBuilder do not share an interface for replace/delete/insert. 5393 Editable editable = (Editable) editor.mTextView.getText(); 5394 Editable originalText = new SpannableStringBuilder(editable.toString()); 5395 5396 // Roll back the last operation. 5397 modifyText(originalText, mNewTextStart, getNewTextEnd(), mOldText, mOldTextStart, 5398 mOldCursorPos); 5399 5400 // Clone the text again and apply the new operation. 5401 Editable finalText = new SpannableStringBuilder(editable.toString()); 5402 modifyText(finalText, edit.mOldTextStart, edit.getOldTextEnd(), edit.mNewText, 5403 edit.mNewTextStart, edit.mNewCursorPos); 5404 5405 // Convert this operation into a non-mergeable replacement of the entire string. 5406 mType = TYPE_REPLACE; 5407 mNewText = finalText.toString(); 5408 mNewTextStart = 0; 5409 mOldText = originalText.toString(); 5410 mOldTextStart = 0; 5411 mNewCursorPos = edit.mNewCursorPos; 5412 // mOldCursorPos is unchanged. 5413 } 5414 5415 private static void modifyText(Editable text, int deleteFrom, int deleteTo, 5416 CharSequence newText, int newTextInsertAt, int newCursorPos) { 5417 // Apply the edit if it is still valid. 5418 if (isValidRange(text, deleteFrom, deleteTo) && 5419 newTextInsertAt <= text.length() - (deleteTo - deleteFrom)) { 5420 if (deleteFrom != deleteTo) { 5421 text.delete(deleteFrom, deleteTo); 5422 } 5423 if (newText.length() != 0) { 5424 text.insert(newTextInsertAt, newText); 5425 } 5426 } 5427 // Restore the cursor position. If there wasn't an old cursor (newCursorPos == -1) then 5428 // don't explicitly set it and rely on SpannableStringBuilder to position it. 5429 // TODO: Select all the text that was undone. 5430 if (0 <= newCursorPos && newCursorPos <= text.length()) { 5431 Selection.setSelection(text, newCursorPos); 5432 } 5433 } 5434 5435 private String getTypeString() { 5436 switch (mType) { 5437 case TYPE_INSERT: 5438 return "insert"; 5439 case TYPE_DELETE: 5440 return "delete"; 5441 case TYPE_REPLACE: 5442 return "replace"; 5443 default: 5444 return ""; 5445 } 5446 } 5447 5448 @Override 5449 public String toString() { 5450 return "[mType=" + getTypeString() + ", " + 5451 "mOldText=" + mOldText + ", " + 5452 "mOldTextStart=" + mOldTextStart + ", " + 5453 "mNewText=" + mNewText + ", " + 5454 "mNewTextStart=" + mNewTextStart + ", " + 5455 "mOldCursorPos=" + mOldCursorPos + ", " + 5456 "mNewCursorPos=" + mNewCursorPos + "]"; 5457 } 5458 5459 public static final Parcelable.ClassLoaderCreator<EditOperation> CREATOR 5460 = new Parcelable.ClassLoaderCreator<EditOperation>() { 5461 @Override 5462 public EditOperation createFromParcel(Parcel in) { 5463 return new EditOperation(in, null); 5464 } 5465 5466 @Override 5467 public EditOperation createFromParcel(Parcel in, ClassLoader loader) { 5468 return new EditOperation(in, loader); 5469 } 5470 5471 @Override 5472 public EditOperation[] newArray(int size) { 5473 return new EditOperation[size]; 5474 } 5475 }; 5476 } 5477 5478 /** 5479 * A helper for enabling and handling "PROCESS_TEXT" menu actions. 5480 * These allow external applications to plug into currently selected text. 5481 */ 5482 static final class ProcessTextIntentActionsHandler { 5483 5484 private final Editor mEditor; 5485 private final TextView mTextView; 5486 private final PackageManager mPackageManager; 5487 private final SparseArray<Intent> mAccessibilityIntents = new SparseArray<Intent>(); 5488 private final SparseArray<AccessibilityNodeInfo.AccessibilityAction> mAccessibilityActions 5489 = new SparseArray<AccessibilityNodeInfo.AccessibilityAction>(); 5490 5491 private ProcessTextIntentActionsHandler(Editor editor) { 5492 mEditor = Preconditions.checkNotNull(editor); 5493 mTextView = Preconditions.checkNotNull(mEditor.mTextView); 5494 mPackageManager = Preconditions.checkNotNull( 5495 mTextView.getContext().getPackageManager()); 5496 } 5497 5498 /** 5499 * Adds "PROCESS_TEXT" menu items to the specified menu. 5500 */ 5501 public void onInitializeMenu(Menu menu) { 5502 int i = 0; 5503 for (ResolveInfo resolveInfo : getSupportedActivities()) { 5504 menu.add(Menu.NONE, Menu.NONE, 5505 Editor.MENU_ITEM_ORDER_PROCESS_TEXT_INTENT_ACTIONS_START + i++, 5506 getLabel(resolveInfo)) 5507 .setIntent(createProcessTextIntentForResolveInfo(resolveInfo)) 5508 .setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM); 5509 } 5510 } 5511 5512 /** 5513 * Performs a "PROCESS_TEXT" action if there is one associated with the specified 5514 * menu item. 5515 * 5516 * @return True if the action was performed, false otherwise. 5517 */ 5518 public boolean performMenuItemAction(MenuItem item) { 5519 return fireIntent(item.getIntent()); 5520 } 5521 5522 /** 5523 * Initializes and caches "PROCESS_TEXT" accessibility actions. 5524 */ 5525 public void initializeAccessibilityActions() { 5526 mAccessibilityIntents.clear(); 5527 mAccessibilityActions.clear(); 5528 int i = 0; 5529 for (ResolveInfo resolveInfo : getSupportedActivities()) { 5530 int actionId = TextView.ACCESSIBILITY_ACTION_PROCESS_TEXT_START_ID + i++; 5531 mAccessibilityActions.put( 5532 actionId, 5533 new AccessibilityNodeInfo.AccessibilityAction( 5534 actionId, getLabel(resolveInfo))); 5535 mAccessibilityIntents.put( 5536 actionId, createProcessTextIntentForResolveInfo(resolveInfo)); 5537 } 5538 } 5539 5540 /** 5541 * Adds "PROCESS_TEXT" accessibility actions to the specified accessibility node info. 5542 * NOTE: This needs a prior call to {@link #initializeAccessibilityActions()} to make the 5543 * latest accessibility actions available for this call. 5544 */ 5545 public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo nodeInfo) { 5546 for (int i = 0; i < mAccessibilityActions.size(); i++) { 5547 nodeInfo.addAction(mAccessibilityActions.valueAt(i)); 5548 } 5549 } 5550 5551 /** 5552 * Performs a "PROCESS_TEXT" action if there is one associated with the specified 5553 * accessibility action id. 5554 * 5555 * @return True if the action was performed, false otherwise. 5556 */ 5557 public boolean performAccessibilityAction(int actionId) { 5558 return fireIntent(mAccessibilityIntents.get(actionId)); 5559 } 5560 5561 private boolean fireIntent(Intent intent) { 5562 if (intent != null && Intent.ACTION_PROCESS_TEXT.equals(intent.getAction())) { 5563 intent.putExtra(Intent.EXTRA_PROCESS_TEXT, mTextView.getSelectedText()); 5564 mEditor.mPreserveDetachedSelection = true; 5565 mTextView.startActivityForResult(intent, TextView.PROCESS_TEXT_REQUEST_CODE); 5566 return true; 5567 } 5568 return false; 5569 } 5570 5571 private List<ResolveInfo> getSupportedActivities() { 5572 PackageManager packageManager = mTextView.getContext().getPackageManager(); 5573 return packageManager.queryIntentActivities(createProcessTextIntent(), 0); 5574 } 5575 5576 private Intent createProcessTextIntentForResolveInfo(ResolveInfo info) { 5577 return createProcessTextIntent() 5578 .putExtra(Intent.EXTRA_PROCESS_TEXT_READONLY, !mTextView.isTextEditable()) 5579 .setClassName(info.activityInfo.packageName, info.activityInfo.name); 5580 } 5581 5582 private Intent createProcessTextIntent() { 5583 return new Intent() 5584 .setAction(Intent.ACTION_PROCESS_TEXT) 5585 .setType("text/plain"); 5586 } 5587 5588 private CharSequence getLabel(ResolveInfo resolveInfo) { 5589 return resolveInfo.loadLabel(mPackageManager); 5590 } 5591 } 5592} 5593