1 /* 2 * Copyright (C) 2008,2009 OMRON SOFTWARE Co., Ltd. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of 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, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package jp.co.omronsoft.openwnn; 18 19 import android.inputmethodservice.InputMethodService; 20 import android.view.WindowManager; 21 import android.content.Context; 22 import android.view.View; 23 import android.view.KeyEvent; 24 import android.view.MotionEvent; 25 import android.content.SharedPreferences; 26 import android.preference.PreferenceManager; 27 28 import android.util.Log; 29 import android.os.*; 30 import android.view.inputmethod.*; 31 import android.content.res.Configuration; 32 import android.graphics.*; 33 import android.graphics.drawable.*; 34 35 /** 36 * The OpenWnn IME's base class. 37 * 38 * @author Copyright (C) 2009 OMRON SOFTWARE CO., LTD. All Rights Reserved. 39 */ 40 public class OpenWnn extends InputMethodService { 41 42 /** Candidate view */ 43 protected CandidatesViewManager mCandidatesViewManager = null; 44 /** Input view (software keyboard) */ 45 protected InputViewManager mInputViewManager = null; 46 /** Conversion engine */ 47 protected WnnEngine mConverter = null; 48 /** Pre-converter (for Romaji-to-Kana input, Hangul input, etc.) */ 49 protected LetterConverter mPreConverter = null; 50 /** The inputing/editing string */ 51 protected ComposingText mComposingText = null; 52 /** The input connection */ 53 protected InputConnection mInputConnection = null; 54 /** Auto hide candidate view */ 55 protected boolean mAutoHideMode = true; 56 /** Direct input mode */ 57 protected boolean mDirectInputMode = true; 58 59 /** Flag for checking if the previous down key event is consumed by OpenWnn */ 60 private boolean mConsumeDownEvent; 61 62 /** 63 * Constructor 64 */ 65 public OpenWnn() { 66 super(); 67 } 68 69 /*********************************************************************** 70 * InputMethodService 71 **********************************************************************/ 72 /** @see android.inputmethodservice.InputMethodService#onCreate */ 73 @Override public void onCreate() { 74 super.onCreate(); 75 76 SharedPreferences pref = PreferenceManager.getDefaultSharedPreferences(this); 77 78 79 if (mConverter != null) { mConverter.init(); } 80 if (mComposingText != null) { mComposingText.clear(); } 81 } 82 83 /** @see android.inputmethodservice.InputMethodService#onCreateCandidatesView */ 84 @Override public View onCreateCandidatesView() { 85 if (mCandidatesViewManager != null) { 86 WindowManager wm = (WindowManager)getSystemService(Context.WINDOW_SERVICE); 87 View view = mCandidatesViewManager.initView(this, 88 wm.getDefaultDisplay().getWidth(), 89 wm.getDefaultDisplay().getHeight()); 90 mCandidatesViewManager.setViewType(CandidatesViewManager.VIEW_TYPE_NORMAL); 91 return view; 92 } else { 93 return super.onCreateCandidatesView(); 94 } 95 } 96 97 /** @see android.inputmethodservice.InputMethodService#onCreateInputView */ 98 @Override public View onCreateInputView() { 99 SharedPreferences pref = PreferenceManager.getDefaultSharedPreferences(this); 100 101 102 if (mInputViewManager != null) { 103 WindowManager wm = (WindowManager)getSystemService(Context.WINDOW_SERVICE); 104 return mInputViewManager.initView(this, 105 wm.getDefaultDisplay().getWidth(), 106 wm.getDefaultDisplay().getHeight()); 107 } else { 108 return super.onCreateInputView(); 109 } 110 } 111 112 /** @see android.inputmethodservice.InputMethodService#onDestroy */ 113 @Override public void onDestroy() { 114 super.onDestroy(); 115 116 close(); 117 } 118 119 /** @see android.inputmethodservice.InputMethodService#onKeyDown */ 120 @Override public boolean onKeyDown(int keyCode, KeyEvent event) { 121 mConsumeDownEvent = onEvent(new OpenWnnEvent(event)); 122 if (!mConsumeDownEvent) { 123 return super.onKeyDown(keyCode, event); 124 } 125 return mConsumeDownEvent; 126 } 127 128 /** @see android.inputmethodservice.InputMethodService#onKeyUp */ 129 @Override public boolean onKeyUp(int keyCode, KeyEvent event) { 130 boolean ret = mConsumeDownEvent; 131 if (!ret) { 132 ret = super.onKeyUp(keyCode, event); 133 }else{ 134 onEvent(new OpenWnnEvent(event)); 135 } 136 return ret; 137 } 138 139 /** @see android.inputmethodservice.InputMethodService#onStartInput */ 140 @Override public void onStartInput(EditorInfo attribute, boolean restarting) { 141 super.onStartInput(attribute, restarting); 142 mInputConnection = getCurrentInputConnection(); 143 if (!restarting && mComposingText != null) { 144 mComposingText.clear(); 145 } 146 } 147 148 /** @see android.inputmethodservice.InputMethodService#onStartInputView */ 149 @Override public void onStartInputView(EditorInfo attribute, boolean restarting) { 150 super.onStartInputView(attribute, restarting); 151 mInputConnection = getCurrentInputConnection(); 152 153 setCandidatesViewShown(false); 154 if (mInputConnection != null) { 155 mDirectInputMode = false; 156 if (mConverter != null) { mConverter.init(); } 157 } else { 158 mDirectInputMode = true; 159 } 160 SharedPreferences pref = PreferenceManager.getDefaultSharedPreferences(this); 161 if (mCandidatesViewManager != null) { mCandidatesViewManager.setPreferences(pref); } 162 if (mInputViewManager != null) { mInputViewManager.setPreferences(pref, attribute); } 163 if (mPreConverter != null) { mPreConverter.setPreferences(pref); } 164 if (mConverter != null) { mConverter.setPreferences(pref); } 165 } 166 167 /** @see android.inputmethodservice.InputMethodService#requestHideSelf */ 168 @Override public void requestHideSelf(int flag) { 169 super.requestHideSelf(flag); 170 if (mInputViewManager == null) { 171 hideWindow(); 172 } 173 } 174 175 /** @see android.inputmethodservice.InputMethodService#setCandidatesViewShown */ 176 @Override public void setCandidatesViewShown(boolean shown) { 177 super.setCandidatesViewShown(shown); 178 if (shown) { 179 showWindow(true); 180 } else { 181 if (mAutoHideMode && mInputViewManager == null) { 182 hideWindow(); 183 } 184 } 185 } 186 187 /** @see android.inputmethodservice.InputMethodService#hideWindow */ 188 @Override public void hideWindow() { 189 super.hideWindow(); 190 mDirectInputMode = true; 191 hideStatusIcon(); 192 } 193 /** @see android.inputmethodservice.InputMethodService#onComputeInsets */ 194 @Override public void onComputeInsets(InputMethodService.Insets outInsets) { 195 super.onComputeInsets(outInsets); 196 outInsets.contentTopInsets = outInsets.visibleTopInsets; 197 } 198 199 200 /********************************************************************** 201 * OpenWnn 202 **********************************************************************/ 203 /** 204 * Process an event. 205 * 206 * @param ev An event 207 * @return {@code true} if the event is processed in this method; {@code false} if not. 208 */ 209 public boolean onEvent(OpenWnnEvent ev) { 210 return false; 211 } 212 213 /** 214 * Search a character for toggle input. 215 * 216 * @param prevChar The character input previous 217 * @param toggleTable Toggle table 218 * @param reverse {@code false} if toggle direction is forward, {@code true} if toggle direction is backward 219 * @return A character ({@code null} if no character is found) 220 */ 221 protected String searchToggleCharacter(String prevChar, String[] toggleTable, boolean reverse) { 222 for (int i = 0; i < toggleTable.length; i++) { 223 if (prevChar.equals(toggleTable[i])) { 224 if (reverse) { 225 i--; 226 if (i < 0) { 227 return toggleTable[toggleTable.length - 1]; 228 } else { 229 return toggleTable[i]; 230 } 231 } else { 232 i++; 233 if (i == toggleTable.length) { 234 return toggleTable[0]; 235 } else { 236 return toggleTable[i]; 237 } 238 } 239 } 240 } 241 return null; 242 } 243 244 /** 245 * Processing of resource open when IME ends. 246 */ 247 protected void close() { 248 if (mConverter != null) { mConverter.close(); } 249 } 250 } 251
