KeyboardBuilder.java revision 4665463ccd4880c2392d26baa784c5d28de986cc
1/* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not 5 * use this file except in compliance with the License. You may obtain a copy of 6 * the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 12 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 13 * License for the specific language governing permissions and limitations under 14 * the License. 15 */ 16 17package com.android.inputmethod.keyboard.internal; 18 19import android.content.Context; 20import android.content.res.Resources; 21import android.content.res.TypedArray; 22import android.content.res.XmlResourceParser; 23import android.util.DisplayMetrics; 24import android.util.Log; 25import android.util.TypedValue; 26import android.util.Xml; 27import android.view.InflateException; 28 29import com.android.inputmethod.compat.EditorInfoCompatUtils; 30import com.android.inputmethod.keyboard.Key; 31import com.android.inputmethod.keyboard.Keyboard; 32import com.android.inputmethod.keyboard.KeyboardId; 33import com.android.inputmethod.latin.LatinImeLogger; 34import com.android.inputmethod.latin.R; 35 36import org.xmlpull.v1.XmlPullParser; 37import org.xmlpull.v1.XmlPullParserException; 38 39import java.io.IOException; 40import java.util.Arrays; 41 42/** 43 * Keyboard Building helper. 44 * 45 * This class parses Keyboard XML file and eventually build a Keyboard. 46 * The Keyboard XML file looks like: 47 * <pre> 48 * >!-- xml/keyboard.xml --< 49 * >Keyboard keyboard_attributes*< 50 * >!-- Keyboard Content --< 51 * >Row row_attributes*< 52 * >!-- Row Content --< 53 * >Key key_attributes* /< 54 * >Spacer horizontalGap="0.2in" /< 55 * >include keyboardLayout="@xml/other_keys"< 56 * ... 57 * >/Row< 58 * >include keyboardLayout="@xml/other_rows"< 59 * ... 60 * >/Keyboard< 61 * </pre> 62 * The XML file which is included in other file must have >merge< as root element, such as: 63 * <pre> 64 * >!-- xml/other_keys.xml --< 65 * >merge< 66 * >Key key_attributes* /< 67 * ... 68 * >/merge< 69 * </pre> 70 * and 71 * <pre> 72 * >!-- xml/other_rows.xml --< 73 * >merge< 74 * >Row row_attributes*< 75 * >Key key_attributes* /< 76 * >/Row< 77 * ... 78 * >/merge< 79 * </pre> 80 * You can also use switch-case-default tags to select Rows and Keys. 81 * <pre> 82 * >switch< 83 * >case case_attribute*< 84 * >!-- Any valid tags at switch position --< 85 * >/case< 86 * ... 87 * >default< 88 * >!-- Any valid tags at switch position --< 89 * >/default< 90 * >/switch< 91 * </pre> 92 * You can declare Key style and specify styles within Key tags. 93 * <pre> 94 * >switch< 95 * >case mode="email"< 96 * >key-style styleName="f1-key" parentStyle="modifier-key" 97 * keyLabel=".com" 98 * /< 99 * >/case< 100 * >case mode="url"< 101 * >key-style styleName="f1-key" parentStyle="modifier-key" 102 * keyLabel="http://" 103 * /< 104 * >/case< 105 * >/switch< 106 * ... 107 * >Key keyStyle="shift-key" ... /< 108 * </pre> 109 */ 110 111public class KeyboardBuilder<KP extends KeyboardParams> { 112 private static final String TAG = KeyboardBuilder.class.getSimpleName(); 113 private static final boolean DEBUG = false; 114 115 // Keyboard XML Tags 116 private static final String TAG_KEYBOARD = "Keyboard"; 117 private static final String TAG_ROW = "Row"; 118 private static final String TAG_KEY = "Key"; 119 private static final String TAG_SPACER = "Spacer"; 120 private static final String TAG_INCLUDE = "include"; 121 private static final String TAG_MERGE = "merge"; 122 private static final String TAG_SWITCH = "switch"; 123 private static final String TAG_CASE = "case"; 124 private static final String TAG_DEFAULT = "default"; 125 public static final String TAG_KEY_STYLE = "key-style"; 126 127 private static final int DEFAULT_KEYBOARD_COLUMNS = 10; 128 private static final int DEFAULT_KEYBOARD_ROWS = 4; 129 130 protected final KP mParams; 131 protected final Context mContext; 132 protected final Resources mResources; 133 private final DisplayMetrics mDisplayMetrics; 134 135 private int mCurrentY = 0; 136 private Row mCurrentRow = null; 137 private boolean mLeftEdge; 138 private boolean mTopEdge; 139 private Key mRightEdgeKey = null; 140 private final KeyStyles mKeyStyles = new KeyStyles(); 141 142 /** 143 * Container for keys in the keyboard. All keys in a row are at the same Y-coordinate. 144 * Some of the key size defaults can be overridden per row from what the {@link Keyboard} 145 * defines. 146 */ 147 public static class Row { 148 // keyWidth enum constants 149 private static final int KEYWIDTH_NOT_ENUM = 0; 150 private static final int KEYWIDTH_FILL_RIGHT = -1; 151 private static final int KEYWIDTH_FILL_BOTH = -2; 152 153 private final KeyboardParams mParams; 154 /** Default width of a key in this row. */ 155 public final float mDefaultKeyWidth; 156 /** Default height of a key in this row. */ 157 public final int mRowHeight; 158 159 private final int mCurrentY; 160 // Will be updated by {@link Key}'s constructor. 161 private float mCurrentX; 162 163 public Row(Resources res, KeyboardParams params, XmlPullParser parser, int y) { 164 mParams = params; 165 TypedArray keyboardAttr = res.obtainAttributes(Xml.asAttributeSet(parser), 166 R.styleable.Keyboard); 167 mRowHeight = (int)KeyboardBuilder.getDimensionOrFraction(keyboardAttr, 168 R.styleable.Keyboard_rowHeight, params.mBaseHeight, params.mDefaultRowHeight); 169 keyboardAttr.recycle(); 170 TypedArray keyAttr = res.obtainAttributes(Xml.asAttributeSet(parser), 171 R.styleable.Keyboard_Key); 172 mDefaultKeyWidth = KeyboardBuilder.getDimensionOrFraction(keyAttr, 173 R.styleable.Keyboard_Key_keyWidth, params.mBaseWidth, params.mDefaultKeyWidth); 174 keyAttr.recycle(); 175 176 mCurrentY = y; 177 mCurrentX = 0.0f; 178 } 179 180 public void setXPos(float keyXPos) { 181 mCurrentX = keyXPos; 182 } 183 184 public void advanceXPos(float width) { 185 mCurrentX += width; 186 } 187 188 public int getKeyY() { 189 return mCurrentY; 190 } 191 192 public float getKeyX(TypedArray keyAttr) { 193 final int widthType = KeyboardBuilder.getEnumValue(keyAttr, 194 R.styleable.Keyboard_Key_keyWidth, KEYWIDTH_NOT_ENUM); 195 if (widthType == KEYWIDTH_FILL_BOTH) { 196 // If keyWidth is fillBoth, the key width should start right after the nearest key 197 // on the left hand side. 198 return mCurrentX; 199 } 200 201 final int keyboardRightEdge = mParams.mOccupiedWidth - mParams.mHorizontalEdgesPadding; 202 if (keyAttr.hasValue(R.styleable.Keyboard_Key_keyXPos)) { 203 final float keyXPos = KeyboardBuilder.getDimensionOrFraction(keyAttr, 204 R.styleable.Keyboard_Key_keyXPos, mParams.mBaseWidth, 0); 205 if (keyXPos < 0) { 206 // If keyXPos is negative, the actual x-coordinate will be 207 // keyboardWidth + keyXPos. 208 // keyXPos shouldn't be less than mCurrentX because drawable area for this key 209 // starts at mCurrentX. Or, this key will overlaps the adjacent key on its left 210 // hand side. 211 return Math.max(keyXPos + keyboardRightEdge, mCurrentX); 212 } else { 213 return keyXPos + mParams.mHorizontalEdgesPadding; 214 } 215 } 216 return mCurrentX; 217 } 218 219 public float getKeyWidth(TypedArray keyAttr, float keyXPos) { 220 final int widthType = KeyboardBuilder.getEnumValue(keyAttr, 221 R.styleable.Keyboard_Key_keyWidth, KEYWIDTH_NOT_ENUM); 222 switch (widthType) { 223 case KEYWIDTH_FILL_RIGHT: 224 case KEYWIDTH_FILL_BOTH: 225 final int keyboardRightEdge = 226 mParams.mOccupiedWidth - mParams.mHorizontalEdgesPadding; 227 // If keyWidth is fillRight, the actual key width will be determined to fill out the 228 // area up to the right edge of the keyboard. 229 // If keyWidth is fillBoth, the actual key width will be determined to fill out the 230 // area between the nearest key on the left hand side and the right edge of the 231 // keyboard. 232 return keyboardRightEdge - keyXPos; 233 default: // KEYWIDTH_NOT_ENUM 234 return KeyboardBuilder.getDimensionOrFraction(keyAttr, 235 R.styleable.Keyboard_Key_keyWidth, mParams.mBaseWidth, mDefaultKeyWidth); 236 } 237 } 238 } 239 240 public KeyboardBuilder(Context context, KP params) { 241 mContext = context; 242 final Resources res = context.getResources(); 243 mResources = res; 244 mDisplayMetrics = res.getDisplayMetrics(); 245 246 mParams = params; 247 248 setTouchPositionCorrectionData(context, params); 249 250 params.GRID_WIDTH = res.getInteger(R.integer.config_keyboard_grid_width); 251 params.GRID_HEIGHT = res.getInteger(R.integer.config_keyboard_grid_height); 252 } 253 254 private static void setTouchPositionCorrectionData(Context context, KeyboardParams params) { 255 final TypedArray a = context.obtainStyledAttributes( 256 null, R.styleable.Keyboard, R.attr.keyboardStyle, 0); 257 params.mThemeId = a.getInt(R.styleable.Keyboard_themeId, 0); 258 final int resourceId = a.getResourceId(R.styleable.Keyboard_touchPositionCorrectionData, 0); 259 a.recycle(); 260 if (resourceId == 0) { 261 if (LatinImeLogger.sDBG) 262 throw new RuntimeException("touchPositionCorrectionData is not defined"); 263 return; 264 } 265 266 final String[] data = context.getResources().getStringArray(resourceId); 267 params.mTouchPositionCorrection.load(data); 268 } 269 270 public KeyboardBuilder<KP> load(KeyboardId id) { 271 mParams.mId = id; 272 final XmlResourceParser parser = mResources.getXml(id.getXmlId()); 273 try { 274 parseKeyboard(parser); 275 } catch (XmlPullParserException e) { 276 Log.w(TAG, "keyboard XML parse error: " + e); 277 throw new IllegalArgumentException(e); 278 } catch (IOException e) { 279 Log.w(TAG, "keyboard XML parse error: " + e); 280 throw new RuntimeException(e); 281 } finally { 282 parser.close(); 283 } 284 return this; 285 } 286 287 public void setTouchPositionCorrectionEnabled(boolean enabled) { 288 mParams.mTouchPositionCorrection.setEnabled(enabled); 289 } 290 291 public Keyboard build() { 292 return new Keyboard(mParams); 293 } 294 295 private void parseKeyboard(XmlPullParser parser) 296 throws XmlPullParserException, IOException { 297 if (DEBUG) Log.d(TAG, String.format("<%s> %s", TAG_KEYBOARD, mParams.mId)); 298 int event; 299 while ((event = parser.next()) != XmlPullParser.END_DOCUMENT) { 300 if (event == XmlPullParser.START_TAG) { 301 final String tag = parser.getName(); 302 if (TAG_KEYBOARD.equals(tag)) { 303 parseKeyboardAttributes(parser); 304 startKeyboard(); 305 parseKeyboardContent(parser, false); 306 break; 307 } else { 308 throw new XmlParseUtils.IllegalStartTag(parser, TAG_KEYBOARD); 309 } 310 } 311 } 312 } 313 314 private void parseKeyboardAttributes(XmlPullParser parser) { 315 final int displayWidth = mDisplayMetrics.widthPixels; 316 final TypedArray keyboardAttr = mContext.obtainStyledAttributes( 317 Xml.asAttributeSet(parser), R.styleable.Keyboard, R.attr.keyboardStyle, 318 R.style.Keyboard); 319 final TypedArray keyAttr = mResources.obtainAttributes(Xml.asAttributeSet(parser), 320 R.styleable.Keyboard_Key); 321 try { 322 final int displayHeight = mDisplayMetrics.heightPixels; 323 final int keyboardHeight = (int)keyboardAttr.getDimension( 324 R.styleable.Keyboard_keyboardHeight, displayHeight / 2); 325 final int maxKeyboardHeight = (int)getDimensionOrFraction(keyboardAttr, 326 R.styleable.Keyboard_maxKeyboardHeight, displayHeight, displayHeight / 2); 327 int minKeyboardHeight = (int)getDimensionOrFraction(keyboardAttr, 328 R.styleable.Keyboard_minKeyboardHeight, displayHeight, displayHeight / 2); 329 if (minKeyboardHeight < 0) { 330 // Specified fraction was negative, so it should be calculated against display 331 // width. 332 minKeyboardHeight = -(int)getDimensionOrFraction(keyboardAttr, 333 R.styleable.Keyboard_minKeyboardHeight, displayWidth, displayWidth / 2); 334 } 335 final KeyboardParams params = mParams; 336 // Keyboard height will not exceed maxKeyboardHeight and will not be less than 337 // minKeyboardHeight. 338 params.mOccupiedHeight = Math.max( 339 Math.min(keyboardHeight, maxKeyboardHeight), minKeyboardHeight); 340 params.mOccupiedWidth = params.mId.mWidth; 341 params.mTopPadding = (int)getDimensionOrFraction(keyboardAttr, 342 R.styleable.Keyboard_keyboardTopPadding, params.mOccupiedHeight, 0); 343 params.mBottomPadding = (int)getDimensionOrFraction(keyboardAttr, 344 R.styleable.Keyboard_keyboardBottomPadding, params.mOccupiedHeight, 0); 345 params.mHorizontalEdgesPadding = (int)getDimensionOrFraction(keyboardAttr, 346 R.styleable.Keyboard_keyboardHorizontalEdgesPadding, mParams.mOccupiedWidth, 0); 347 348 params.mBaseWidth = params.mOccupiedWidth - params.mHorizontalEdgesPadding * 2 349 - params.mHorizontalCenterPadding; 350 params.mDefaultKeyWidth = (int)getDimensionOrFraction(keyAttr, 351 R.styleable.Keyboard_Key_keyWidth, params.mBaseWidth, 352 params.mBaseWidth / DEFAULT_KEYBOARD_COLUMNS); 353 params.mHorizontalGap = (int)getDimensionOrFraction(keyboardAttr, 354 R.styleable.Keyboard_horizontalGap, params.mBaseWidth, 0); 355 params.mVerticalGap = (int)getDimensionOrFraction(keyboardAttr, 356 R.styleable.Keyboard_verticalGap, params.mOccupiedHeight, 0); 357 params.mBaseHeight = params.mOccupiedHeight - params.mTopPadding 358 - params.mBottomPadding + params.mVerticalGap; 359 params.mDefaultRowHeight = (int)getDimensionOrFraction(keyboardAttr, 360 R.styleable.Keyboard_rowHeight, params.mBaseHeight, 361 params.mBaseHeight / DEFAULT_KEYBOARD_ROWS); 362 363 params.mIsRtlKeyboard = keyboardAttr.getBoolean( 364 R.styleable.Keyboard_isRtlKeyboard, false); 365 params.mMoreKeysTemplate = keyboardAttr.getResourceId( 366 R.styleable.Keyboard_moreKeysTemplate, 0); 367 params.mMaxMiniKeyboardColumn = keyAttr.getInt( 368 R.styleable.Keyboard_Key_maxMoreKeysColumn, 5); 369 370 params.mIconsSet.loadIcons(keyboardAttr); 371 } finally { 372 keyAttr.recycle(); 373 keyboardAttr.recycle(); 374 } 375 } 376 377 private void parseKeyboardContent(XmlPullParser parser, boolean skip) 378 throws XmlPullParserException, IOException { 379 int event; 380 while ((event = parser.next()) != XmlPullParser.END_DOCUMENT) { 381 if (event == XmlPullParser.START_TAG) { 382 final String tag = parser.getName(); 383 if (TAG_ROW.equals(tag)) { 384 Row row = parseRowAttributes(parser); 385 if (DEBUG) Log.d(TAG, String.format("<%s>", TAG_ROW)); 386 if (!skip) 387 startRow(row); 388 parseRowContent(parser, row, skip); 389 } else if (TAG_INCLUDE.equals(tag)) { 390 parseIncludeKeyboardContent(parser, skip); 391 } else if (TAG_SWITCH.equals(tag)) { 392 parseSwitchKeyboardContent(parser, skip); 393 } else if (TAG_KEY_STYLE.equals(tag)) { 394 parseKeyStyle(parser, skip); 395 } else { 396 throw new XmlParseUtils.IllegalStartTag(parser, TAG_ROW); 397 } 398 } else if (event == XmlPullParser.END_TAG) { 399 final String tag = parser.getName(); 400 if (TAG_KEYBOARD.equals(tag)) { 401 endKeyboard(); 402 break; 403 } else if (TAG_CASE.equals(tag) || TAG_DEFAULT.equals(tag) 404 || TAG_MERGE.equals(tag)) { 405 if (DEBUG) Log.d(TAG, String.format("</%s>", tag)); 406 break; 407 } else if (TAG_KEY_STYLE.equals(tag)) { 408 continue; 409 } else { 410 throw new XmlParseUtils.IllegalEndTag(parser, TAG_ROW); 411 } 412 } 413 } 414 } 415 416 private Row parseRowAttributes(XmlPullParser parser) throws XmlPullParserException { 417 final TypedArray a = mResources.obtainAttributes(Xml.asAttributeSet(parser), 418 R.styleable.Keyboard); 419 try { 420 if (a.hasValue(R.styleable.Keyboard_horizontalGap)) 421 throw new XmlParseUtils.IllegalAttribute(parser, "horizontalGap"); 422 if (a.hasValue(R.styleable.Keyboard_verticalGap)) 423 throw new XmlParseUtils.IllegalAttribute(parser, "verticalGap"); 424 return new Row(mResources, mParams, parser, mCurrentY); 425 } finally { 426 a.recycle(); 427 } 428 } 429 430 private void parseRowContent(XmlPullParser parser, Row row, boolean skip) 431 throws XmlPullParserException, IOException { 432 int event; 433 while ((event = parser.next()) != XmlPullParser.END_DOCUMENT) { 434 if (event == XmlPullParser.START_TAG) { 435 final String tag = parser.getName(); 436 if (TAG_KEY.equals(tag)) { 437 parseKey(parser, row, skip); 438 } else if (TAG_SPACER.equals(tag)) { 439 parseSpacer(parser, row, skip); 440 } else if (TAG_INCLUDE.equals(tag)) { 441 parseIncludeRowContent(parser, row, skip); 442 } else if (TAG_SWITCH.equals(tag)) { 443 parseSwitchRowContent(parser, row, skip); 444 } else if (TAG_KEY_STYLE.equals(tag)) { 445 parseKeyStyle(parser, skip); 446 } else { 447 throw new XmlParseUtils.IllegalStartTag(parser, TAG_KEY); 448 } 449 } else if (event == XmlPullParser.END_TAG) { 450 final String tag = parser.getName(); 451 if (TAG_ROW.equals(tag)) { 452 if (DEBUG) Log.d(TAG, String.format("</%s>", TAG_ROW)); 453 if (!skip) 454 endRow(row); 455 break; 456 } else if (TAG_CASE.equals(tag) || TAG_DEFAULT.equals(tag) 457 || TAG_MERGE.equals(tag)) { 458 if (DEBUG) Log.d(TAG, String.format("</%s>", tag)); 459 break; 460 } else if (TAG_KEY_STYLE.equals(tag)) { 461 continue; 462 } else { 463 throw new XmlParseUtils.IllegalEndTag(parser, TAG_KEY); 464 } 465 } 466 } 467 } 468 469 private void parseKey(XmlPullParser parser, Row row, boolean skip) 470 throws XmlPullParserException, IOException { 471 if (skip) { 472 XmlParseUtils.checkEndTag(TAG_KEY, parser); 473 } else { 474 final Key key = new Key(mResources, mParams, row, parser, mKeyStyles); 475 if (DEBUG) Log.d(TAG, String.format("<%s%s keyLabel=%s code=%d moreKeys=%s />", 476 TAG_KEY, (key.isEnabled() ? "" : " disabled"), key.mLabel, key.mCode, 477 Arrays.toString(key.mMoreKeys))); 478 XmlParseUtils.checkEndTag(TAG_KEY, parser); 479 endKey(key); 480 } 481 } 482 483 private void parseSpacer(XmlPullParser parser, Row row, boolean skip) 484 throws XmlPullParserException, IOException { 485 if (skip) { 486 XmlParseUtils.checkEndTag(TAG_SPACER, parser); 487 } else { 488 final Key.Spacer spacer = new Key.Spacer(mResources, mParams, row, parser, mKeyStyles); 489 if (DEBUG) Log.d(TAG, String.format("<%s />", TAG_SPACER)); 490 XmlParseUtils.checkEndTag(TAG_SPACER, parser); 491 endKey(spacer); 492 } 493 } 494 495 private void parseIncludeKeyboardContent(XmlPullParser parser, boolean skip) 496 throws XmlPullParserException, IOException { 497 parseIncludeInternal(parser, null, skip); 498 } 499 500 private void parseIncludeRowContent(XmlPullParser parser, Row row, boolean skip) 501 throws XmlPullParserException, IOException { 502 parseIncludeInternal(parser, row, skip); 503 } 504 505 private void parseIncludeInternal(XmlPullParser parser, Row row, boolean skip) 506 throws XmlPullParserException, IOException { 507 if (skip) { 508 XmlParseUtils.checkEndTag(TAG_INCLUDE, parser); 509 } else { 510 final TypedArray a = mResources.obtainAttributes(Xml.asAttributeSet(parser), 511 R.styleable.Keyboard_Include); 512 int keyboardLayout = 0; 513 try { 514 XmlParseUtils.checkAttributeExists(a, 515 R.styleable.Keyboard_Include_keyboardLayout, "keyboardLayout", 516 TAG_INCLUDE, parser); 517 keyboardLayout = a.getResourceId(R.styleable.Keyboard_Include_keyboardLayout, 0); 518 } finally { 519 a.recycle(); 520 } 521 522 XmlParseUtils.checkEndTag(TAG_INCLUDE, parser); 523 if (DEBUG) Log.d(TAG, String.format("<%s keyboardLayout=%s />", 524 TAG_INCLUDE, mResources.getResourceEntryName(keyboardLayout))); 525 final XmlResourceParser parserForInclude = mResources.getXml(keyboardLayout); 526 try { 527 parseMerge(parserForInclude, row, skip); 528 } finally { 529 parserForInclude.close(); 530 } 531 } 532 } 533 534 private void parseMerge(XmlPullParser parser, Row row, boolean skip) 535 throws XmlPullParserException, IOException { 536 int event; 537 while ((event = parser.next()) != XmlPullParser.END_DOCUMENT) { 538 if (event == XmlPullParser.START_TAG) { 539 final String tag = parser.getName(); 540 if (TAG_MERGE.equals(tag)) { 541 if (row == null) { 542 parseKeyboardContent(parser, skip); 543 } else { 544 parseRowContent(parser, row, skip); 545 } 546 break; 547 } else { 548 throw new XmlParseUtils.ParseException( 549 "Included keyboard layout must have <merge> root element", parser); 550 } 551 } 552 } 553 } 554 555 private void parseSwitchKeyboardContent(XmlPullParser parser, boolean skip) 556 throws XmlPullParserException, IOException { 557 parseSwitchInternal(parser, null, skip); 558 } 559 560 private void parseSwitchRowContent(XmlPullParser parser, Row row, boolean skip) 561 throws XmlPullParserException, IOException { 562 parseSwitchInternal(parser, row, skip); 563 } 564 565 private void parseSwitchInternal(XmlPullParser parser, Row row, boolean skip) 566 throws XmlPullParserException, IOException { 567 if (DEBUG) Log.d(TAG, String.format("<%s> %s", TAG_SWITCH, mParams.mId)); 568 boolean selected = false; 569 int event; 570 while ((event = parser.next()) != XmlPullParser.END_DOCUMENT) { 571 if (event == XmlPullParser.START_TAG) { 572 final String tag = parser.getName(); 573 if (TAG_CASE.equals(tag)) { 574 selected |= parseCase(parser, row, selected ? true : skip); 575 } else if (TAG_DEFAULT.equals(tag)) { 576 selected |= parseDefault(parser, row, selected ? true : skip); 577 } else { 578 throw new XmlParseUtils.IllegalStartTag(parser, TAG_KEY); 579 } 580 } else if (event == XmlPullParser.END_TAG) { 581 final String tag = parser.getName(); 582 if (TAG_SWITCH.equals(tag)) { 583 if (DEBUG) Log.d(TAG, String.format("</%s>", TAG_SWITCH)); 584 break; 585 } else { 586 throw new XmlParseUtils.IllegalEndTag(parser, TAG_KEY); 587 } 588 } 589 } 590 } 591 592 private boolean parseCase(XmlPullParser parser, Row row, boolean skip) 593 throws XmlPullParserException, IOException { 594 final boolean selected = parseCaseCondition(parser); 595 if (row == null) { 596 // Processing Rows. 597 parseKeyboardContent(parser, selected ? skip : true); 598 } else { 599 // Processing Keys. 600 parseRowContent(parser, row, selected ? skip : true); 601 } 602 return selected; 603 } 604 605 private boolean parseCaseCondition(XmlPullParser parser) { 606 final KeyboardId id = mParams.mId; 607 if (id == null) 608 return true; 609 610 final TypedArray a = mResources.obtainAttributes(Xml.asAttributeSet(parser), 611 R.styleable.Keyboard_Case); 612 try { 613 final boolean modeMatched = matchTypedValue(a, 614 R.styleable.Keyboard_Case_mode, id.mMode, KeyboardId.modeName(id.mMode)); 615 final boolean navigateActionMatched = matchBoolean(a, 616 R.styleable.Keyboard_Case_navigateAction, id.mNavigateAction); 617 final boolean passwordInputMatched = matchBoolean(a, 618 R.styleable.Keyboard_Case_passwordInput, id.mPasswordInput); 619 final boolean hasSettingsKeyMatched = matchBoolean(a, 620 R.styleable.Keyboard_Case_hasSettingsKey, id.mHasSettingsKey); 621 final boolean f2KeyModeMatched = matchInteger(a, 622 R.styleable.Keyboard_Case_f2KeyMode, id.mF2KeyMode); 623 final boolean clobberSettingsKeyMatched = matchBoolean(a, 624 R.styleable.Keyboard_Case_clobberSettingsKey, id.mClobberSettingsKey); 625 final boolean shortcutKeyEnabledMatched = matchBoolean(a, 626 R.styleable.Keyboard_Case_shortcutKeyEnabled, id.mShortcutKeyEnabled); 627 final boolean hasShortcutKeyMatched = matchBoolean(a, 628 R.styleable.Keyboard_Case_hasShortcutKey, id.mHasShortcutKey); 629 // As noted at {@link KeyboardId} class, we are interested only in enum value masked by 630 // {@link android.view.inputmethod.EditorInfo#IME_MASK_ACTION} and 631 // {@link android.view.inputmethod.EditorInfo#IME_FLAG_NO_ENTER_ACTION}. So matching 632 // this attribute with id.mImeOptions as integer value is enough for our purpose. 633 final boolean imeActionMatched = matchInteger(a, 634 R.styleable.Keyboard_Case_imeAction, id.mImeAction); 635 final boolean localeCodeMatched = matchString(a, 636 R.styleable.Keyboard_Case_localeCode, id.mLocale.toString()); 637 final boolean languageCodeMatched = matchString(a, 638 R.styleable.Keyboard_Case_languageCode, id.mLocale.getLanguage()); 639 final boolean countryCodeMatched = matchString(a, 640 R.styleable.Keyboard_Case_countryCode, id.mLocale.getCountry()); 641 final boolean selected = modeMatched && navigateActionMatched && passwordInputMatched 642 && hasSettingsKeyMatched && f2KeyModeMatched && clobberSettingsKeyMatched 643 && shortcutKeyEnabledMatched && hasShortcutKeyMatched && imeActionMatched && 644 localeCodeMatched && languageCodeMatched && countryCodeMatched; 645 646 if (DEBUG) Log.d(TAG, String.format("<%s%s%s%s%s%s%s%s%s%s%s%s%s> %s", TAG_CASE, 647 textAttr(a.getString(R.styleable.Keyboard_Case_mode), "mode"), 648 booleanAttr(a, R.styleable.Keyboard_Case_navigateAction, "navigateAction"), 649 booleanAttr(a, R.styleable.Keyboard_Case_passwordInput, "passwordInput"), 650 booleanAttr(a, R.styleable.Keyboard_Case_hasSettingsKey, "hasSettingsKey"), 651 textAttr(KeyboardId.f2KeyModeName( 652 a.getInt(R.styleable.Keyboard_Case_f2KeyMode, -1)), "f2KeyMode"), 653 booleanAttr(a, R.styleable.Keyboard_Case_clobberSettingsKey, 654 "clobberSettingsKey"), 655 booleanAttr( 656 a, R.styleable.Keyboard_Case_shortcutKeyEnabled, "shortcutKeyEnabled"), 657 booleanAttr(a, R.styleable.Keyboard_Case_hasShortcutKey, "hasShortcutKey"), 658 textAttr(EditorInfoCompatUtils.imeOptionsName( 659 a.getInt(R.styleable.Keyboard_Case_imeAction, -1)), "imeAction"), 660 textAttr(a.getString(R.styleable.Keyboard_Case_localeCode), "localeCode"), 661 textAttr(a.getString(R.styleable.Keyboard_Case_languageCode), "languageCode"), 662 textAttr(a.getString(R.styleable.Keyboard_Case_countryCode), "countryCode"), 663 Boolean.toString(selected))); 664 665 return selected; 666 } finally { 667 a.recycle(); 668 } 669 } 670 671 private static boolean matchInteger(TypedArray a, int index, int value) { 672 // If <case> does not have "index" attribute, that means this <case> is wild-card for the 673 // attribute. 674 return !a.hasValue(index) || a.getInt(index, 0) == value; 675 } 676 677 private static boolean matchBoolean(TypedArray a, int index, boolean value) { 678 // If <case> does not have "index" attribute, that means this <case> is wild-card for the 679 // attribute. 680 return !a.hasValue(index) || a.getBoolean(index, false) == value; 681 } 682 683 private static boolean matchString(TypedArray a, int index, String value) { 684 // If <case> does not have "index" attribute, that means this <case> is wild-card for the 685 // attribute. 686 return !a.hasValue(index) || stringArrayContains(a.getString(index).split("\\|"), value); 687 } 688 689 private static boolean matchTypedValue(TypedArray a, int index, int intValue, String strValue) { 690 // If <case> does not have "index" attribute, that means this <case> is wild-card for the 691 // attribute. 692 final TypedValue v = a.peekValue(index); 693 if (v == null) 694 return true; 695 696 if (isIntegerValue(v)) { 697 return intValue == a.getInt(index, 0); 698 } else if (isStringValue(v)) { 699 return stringArrayContains(a.getString(index).split("\\|"), strValue); 700 } 701 return false; 702 } 703 704 private static boolean stringArrayContains(String[] array, String value) { 705 for (final String elem : array) { 706 if (elem.equals(value)) 707 return true; 708 } 709 return false; 710 } 711 712 private boolean parseDefault(XmlPullParser parser, Row row, boolean skip) 713 throws XmlPullParserException, IOException { 714 if (DEBUG) Log.d(TAG, String.format("<%s>", TAG_DEFAULT)); 715 if (row == null) { 716 parseKeyboardContent(parser, skip); 717 } else { 718 parseRowContent(parser, row, skip); 719 } 720 return true; 721 } 722 723 private void parseKeyStyle(XmlPullParser parser, boolean skip) 724 throws XmlPullParserException { 725 TypedArray keyStyleAttr = mResources.obtainAttributes(Xml.asAttributeSet(parser), 726 R.styleable.Keyboard_KeyStyle); 727 TypedArray keyAttrs = mResources.obtainAttributes(Xml.asAttributeSet(parser), 728 R.styleable.Keyboard_Key); 729 try { 730 if (!keyStyleAttr.hasValue(R.styleable.Keyboard_KeyStyle_styleName)) 731 throw new XmlParseUtils.ParseException("<" + TAG_KEY_STYLE 732 + "/> needs styleName attribute", parser); 733 if (!skip) 734 mKeyStyles.parseKeyStyleAttributes(keyStyleAttr, keyAttrs, parser); 735 } finally { 736 keyStyleAttr.recycle(); 737 keyAttrs.recycle(); 738 } 739 } 740 741 private void startKeyboard() { 742 mCurrentY += mParams.mTopPadding; 743 mTopEdge = true; 744 } 745 746 private void startRow(Row row) { 747 addEdgeSpace(mParams.mHorizontalEdgesPadding, row); 748 mCurrentRow = row; 749 mLeftEdge = true; 750 mRightEdgeKey = null; 751 } 752 753 private void endRow(Row row) { 754 if (mCurrentRow == null) 755 throw new InflateException("orphant end row tag"); 756 if (mRightEdgeKey != null) { 757 mRightEdgeKey.markAsRightEdge(mParams); 758 mRightEdgeKey = null; 759 } 760 addEdgeSpace(mParams.mHorizontalEdgesPadding, row); 761 mCurrentY += row.mRowHeight; 762 mCurrentRow = null; 763 mTopEdge = false; 764 } 765 766 private void endKey(Key key) { 767 mParams.onAddKey(key); 768 if (mLeftEdge) { 769 key.markAsLeftEdge(mParams); 770 mLeftEdge = false; 771 } 772 if (mTopEdge) { 773 key.markAsTopEdge(mParams); 774 } 775 mRightEdgeKey = key; 776 } 777 778 private void endKeyboard() { 779 // nothing to do here. 780 } 781 782 private void addEdgeSpace(float width, Row row) { 783 row.advanceXPos(width); 784 mLeftEdge = false; 785 mRightEdgeKey = null; 786 } 787 788 public static float getDimensionOrFraction(TypedArray a, int index, int base, float defValue) { 789 final TypedValue value = a.peekValue(index); 790 if (value == null) 791 return defValue; 792 if (isFractionValue(value)) { 793 return a.getFraction(index, base, base, defValue); 794 } else if (isDimensionValue(value)) { 795 return a.getDimension(index, defValue); 796 } 797 return defValue; 798 } 799 800 public static int getEnumValue(TypedArray a, int index, int defValue) { 801 final TypedValue value = a.peekValue(index); 802 if (value == null) 803 return defValue; 804 if (isIntegerValue(value)) { 805 return a.getInt(index, defValue); 806 } 807 return defValue; 808 } 809 810 private static boolean isFractionValue(TypedValue v) { 811 return v.type == TypedValue.TYPE_FRACTION; 812 } 813 814 private static boolean isDimensionValue(TypedValue v) { 815 return v.type == TypedValue.TYPE_DIMENSION; 816 } 817 818 private static boolean isIntegerValue(TypedValue v) { 819 return v.type >= TypedValue.TYPE_FIRST_INT && v.type <= TypedValue.TYPE_LAST_INT; 820 } 821 822 private static boolean isStringValue(TypedValue v) { 823 return v.type == TypedValue.TYPE_STRING; 824 } 825 826 private static String textAttr(String value, String name) { 827 return value != null ? String.format(" %s=%s", name, value) : ""; 828 } 829 830 private static String booleanAttr(TypedArray a, int index, String name) { 831 return a.hasValue(index) ? String.format(" %s=%s", name, a.getBoolean(index, false)) : ""; 832 } 833} 834