1af64556de0064eeb5a4d4e6d634c3f074f5f40ceXavier Ducrohet/* 2af64556de0064eeb5a4d4e6d634c3f074f5f40ceXavier Ducrohet * Copyright (C) 2011 The Android Open Source Project 3af64556de0064eeb5a4d4e6d634c3f074f5f40ceXavier Ducrohet * 4af64556de0064eeb5a4d4e6d634c3f074f5f40ceXavier Ducrohet * Licensed under the Apache License, Version 2.0 (the "License"); 5af64556de0064eeb5a4d4e6d634c3f074f5f40ceXavier Ducrohet * you may not use this file except in compliance with the License. 6af64556de0064eeb5a4d4e6d634c3f074f5f40ceXavier Ducrohet * You may obtain a copy of the License at 7af64556de0064eeb5a4d4e6d634c3f074f5f40ceXavier Ducrohet * 8af64556de0064eeb5a4d4e6d634c3f074f5f40ceXavier Ducrohet * http://www.apache.org/licenses/LICENSE-2.0 9af64556de0064eeb5a4d4e6d634c3f074f5f40ceXavier Ducrohet * 10af64556de0064eeb5a4d4e6d634c3f074f5f40ceXavier Ducrohet * Unless required by applicable law or agreed to in writing, software 11af64556de0064eeb5a4d4e6d634c3f074f5f40ceXavier Ducrohet * distributed under the License is distributed on an "AS IS" BASIS, 12af64556de0064eeb5a4d4e6d634c3f074f5f40ceXavier Ducrohet * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13af64556de0064eeb5a4d4e6d634c3f074f5f40ceXavier Ducrohet * See the License for the specific language governing permissions and 14af64556de0064eeb5a4d4e6d634c3f074f5f40ceXavier Ducrohet * limitations under the License. 15af64556de0064eeb5a4d4e6d634c3f074f5f40ceXavier Ducrohet */ 16af64556de0064eeb5a4d4e6d634c3f074f5f40ceXavier Ducrohet 17af64556de0064eeb5a4d4e6d634c3f074f5f40ceXavier Ducrohetpackage android.text; 18af64556de0064eeb5a4d4e6d634c3f074f5f40ceXavier Ducrohet 190d9c922c9614147d1277cb36cfb7296774415d15Deepanshu Guptaimport com.android.ide.common.rendering.api.LayoutLog; 200d9c922c9614147d1277cb36cfb7296774415d15Deepanshu Guptaimport com.android.layoutlib.bridge.Bridge; 21af64556de0064eeb5a4d4e6d634c3f074f5f40ceXavier Ducrohetimport com.android.tools.layoutlib.annotations.LayoutlibDelegate; 220d9c922c9614147d1277cb36cfb7296774415d15Deepanshu Guptaimport com.ibm.icu.text.Bidi; 23af64556de0064eeb5a4d4e6d634c3f074f5f40ceXavier Ducrohet 24af64556de0064eeb5a4d4e6d634c3f074f5f40ceXavier Ducrohet 25af64556de0064eeb5a4d4e6d634c3f074f5f40ceXavier Ducrohet/** 26af64556de0064eeb5a4d4e6d634c3f074f5f40ceXavier Ducrohet * Delegate used to provide new implementation for the native methods of {@link AndroidBidi} 27af64556de0064eeb5a4d4e6d634c3f074f5f40ceXavier Ducrohet * 28af64556de0064eeb5a4d4e6d634c3f074f5f40ceXavier Ducrohet * Through the layoutlib_create tool, the original methods of AndroidBidi have been replaced 29af64556de0064eeb5a4d4e6d634c3f074f5f40ceXavier Ducrohet * by calls to methods of the same name in this delegate class. 30af64556de0064eeb5a4d4e6d634c3f074f5f40ceXavier Ducrohet * 31af64556de0064eeb5a4d4e6d634c3f074f5f40ceXavier Ducrohet */ 32af64556de0064eeb5a4d4e6d634c3f074f5f40ceXavier Ducrohetpublic class AndroidBidi_Delegate { 33af64556de0064eeb5a4d4e6d634c3f074f5f40ceXavier Ducrohet 34af64556de0064eeb5a4d4e6d634c3f074f5f40ceXavier Ducrohet @LayoutlibDelegate 350d9c922c9614147d1277cb36cfb7296774415d15Deepanshu Gupta /*package*/ static int runBidi(int dir, char[] chars, byte[] charInfo, int count, 360d9c922c9614147d1277cb36cfb7296774415d15Deepanshu Gupta boolean haveInfo) { 370d9c922c9614147d1277cb36cfb7296774415d15Deepanshu Gupta 380d9c922c9614147d1277cb36cfb7296774415d15Deepanshu Gupta switch (dir) { 390d9c922c9614147d1277cb36cfb7296774415d15Deepanshu Gupta case 0: // Layout.DIR_REQUEST_LTR 400d9c922c9614147d1277cb36cfb7296774415d15Deepanshu Gupta case 1: // Layout.DIR_REQUEST_RTL 410d9c922c9614147d1277cb36cfb7296774415d15Deepanshu Gupta break; // No change. 420d9c922c9614147d1277cb36cfb7296774415d15Deepanshu Gupta case -1: 430d9c922c9614147d1277cb36cfb7296774415d15Deepanshu Gupta dir = Bidi.LEVEL_DEFAULT_LTR; 440d9c922c9614147d1277cb36cfb7296774415d15Deepanshu Gupta break; 450d9c922c9614147d1277cb36cfb7296774415d15Deepanshu Gupta case -2: 460d9c922c9614147d1277cb36cfb7296774415d15Deepanshu Gupta dir = Bidi.LEVEL_DEFAULT_RTL; 470d9c922c9614147d1277cb36cfb7296774415d15Deepanshu Gupta break; 480d9c922c9614147d1277cb36cfb7296774415d15Deepanshu Gupta default: 490d9c922c9614147d1277cb36cfb7296774415d15Deepanshu Gupta // Invalid code. Log error, assume LEVEL_DEFAULT_LTR and continue. 500d9c922c9614147d1277cb36cfb7296774415d15Deepanshu Gupta Bridge.getLog().error(LayoutLog.TAG_BROKEN, "Invalid direction flag", null); 510d9c922c9614147d1277cb36cfb7296774415d15Deepanshu Gupta dir = Bidi.LEVEL_DEFAULT_LTR; 520d9c922c9614147d1277cb36cfb7296774415d15Deepanshu Gupta } 530d9c922c9614147d1277cb36cfb7296774415d15Deepanshu Gupta Bidi bidi = new Bidi(chars, 0, null, 0, count, dir); 540d9c922c9614147d1277cb36cfb7296774415d15Deepanshu Gupta if (charInfo != null) { 550d9c922c9614147d1277cb36cfb7296774415d15Deepanshu Gupta for (int i = 0; i < count; ++i) 560d9c922c9614147d1277cb36cfb7296774415d15Deepanshu Gupta charInfo[i] = bidi.getLevelAt(i); 570d9c922c9614147d1277cb36cfb7296774415d15Deepanshu Gupta } 580d9c922c9614147d1277cb36cfb7296774415d15Deepanshu Gupta return bidi.getParaLevel(); 59af64556de0064eeb5a4d4e6d634c3f074f5f40ceXavier Ducrohet } 60af64556de0064eeb5a4d4e6d634c3f074f5f40ceXavier Ducrohet} 61