| /* |
| * Copyright (C) 2011 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package android.text; |
| |
| import com.android.ide.common.rendering.api.LayoutLog; |
| import com.android.layoutlib.bridge.Bridge; |
| import com.android.tools.layoutlib.annotations.LayoutlibDelegate; |
| import com.ibm.icu.text.Bidi; |
| |
| |
| /** |
| * Delegate used to provide new implementation for the native methods of {@link AndroidBidi} |
| * |
| * Through the layoutlib_create tool, the original methods of AndroidBidi have been replaced |
| * by calls to methods of the same name in this delegate class. |
| * |
| */ |
| public class AndroidBidi_Delegate { |
| |
| @LayoutlibDelegate |
| /*package*/ static int runBidi(int dir, char[] chars, byte[] charInfo, int count, |
| boolean haveInfo) { |
| |
| switch (dir) { |
| case 0: // Layout.DIR_REQUEST_LTR |
| case 1: // Layout.DIR_REQUEST_RTL |
| break; // No change. |
| case -1: |
| dir = Bidi.LEVEL_DEFAULT_LTR; |
| break; |
| case -2: |
| dir = Bidi.LEVEL_DEFAULT_RTL; |
| break; |
| default: |
| // Invalid code. Log error, assume LEVEL_DEFAULT_LTR and continue. |
| Bridge.getLog().error(LayoutLog.TAG_BROKEN, "Invalid direction flag", null); |
| dir = Bidi.LEVEL_DEFAULT_LTR; |
| } |
| Bidi bidi = new Bidi(chars, 0, null, 0, count, dir); |
| if (charInfo != null) { |
| for (int i = 0; i < count; ++i) |
| charInfo[i] = bidi.getLevelAt(i); |
| } |
| return bidi.getParaLevel(); |
| } |
| } |