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/*
* Copyright (C) 2008,2009 OMRON SOFTWARE Co., Ltd.
*
* 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 jp.co.omronsoft.openwnn;
import android.inputmethodservice.InputMethodService;
import android.view.WindowManager;
import android.content.Context;
import android.view.View;
import android.view.KeyEvent;
import android.content.SharedPreferences;
import android.preference.PreferenceManager;
import android.util.Log;
import android.os.*;
import android.view.inputmethod.*;
import android.content.res.Configuration;
import android.graphics.*;
import android.graphics.drawable.*;
import android.view.MotionEvent;
/**
* The OpenWnn IME's base class.
*
* @author Copyright (C) 2009 OMRON SOFTWARE CO., LTD. All Rights Reserved.
*/
public class OpenWnn extends InputMethodService {
/** Candidate view */
protected CandidatesViewManager mCandidatesViewManager = null;
/** Input view (software keyboard) */
protected InputViewManager mInputViewManager = null;
/** Conversion engine */
protected WnnEngine mConverter = null;
/** Pre-converter (for Romaji-to-Kana input, Hangul input, etc.) */
protected LetterConverter mPreConverter = null;
/** The inputing/editing string */
protected ComposingText mComposingText = null;
/** The input connection */
protected InputConnection mInputConnection = null;
/** Auto hide candidate view */
protected boolean mAutoHideMode = true;
/** Direct input mode */
protected boolean mDirectInputMode = true;
/** Flag for checking if the previous down key event is consumed by OpenWnn */
private boolean mConsumeDownEvent;
/**
* Constructor
*/
public OpenWnn() {
super();
}
/***********************************************************************
* InputMethodService
**********************************************************************/
/** @see android.inputmethodservice.InputMethodService#onCreate */
@Override public void onCreate() {
super.onCreate();
SharedPreferences pref = PreferenceManager.getDefaultSharedPreferences(this);
if (mConverter != null) { mConverter.init(); }
if (mComposingText != null) { mComposingText.clear(); }
}
/** @see android.inputmethodservice.InputMethodService#onCreateCandidatesView */
@Override public View onCreateCandidatesView() {
if (mCandidatesViewManager != null) {
WindowManager wm = (WindowManager)getSystemService(Context.WINDOW_SERVICE);
View view = mCandidatesViewManager.initView(this,
wm.getDefaultDisplay().getWidth(),
wm.getDefaultDisplay().getHeight());
mCandidatesViewManager.setViewType(CandidatesViewManager.VIEW_TYPE_NORMAL);
return view;
} else {
return super.onCreateCandidatesView();
}
}
/** @see android.inputmethodservice.InputMethodService#onCreateInputView */
@Override public View onCreateInputView() {
SharedPreferences pref = PreferenceManager.getDefaultSharedPreferences(this);
if (mInputViewManager != null) {
WindowManager wm = (WindowManager)getSystemService(Context.WINDOW_SERVICE);
return mInputViewManager.initView(this,
wm.getDefaultDisplay().getWidth(),
wm.getDefaultDisplay().getHeight());
} else {
return super.onCreateInputView();
}
}
/** @see android.inputmethodservice.InputMethodService#onDestroy */
@Override public void onDestroy() {
super.onDestroy();
close();
}
/** @see android.inputmethodservice.InputMethodService#onKeyDown */
@Override public boolean onKeyDown(int keyCode, KeyEvent event) {
mConsumeDownEvent = onEvent(new OpenWnnEvent(event));
if (!mConsumeDownEvent) {
return super.onKeyDown(keyCode, event);
}
return mConsumeDownEvent;
}
/** @see android.inputmethodservice.InputMethodService#onKeyUp */
@Override public boolean onKeyUp(int keyCode, KeyEvent event) {
boolean ret = mConsumeDownEvent;
if (!ret) {
ret = super.onKeyUp(keyCode, event);
}else{
onEvent(new OpenWnnEvent(event));
}
return ret;
}
/** @see android.inputmethodservice.InputMethodService#onStartInput */
@Override public void onStartInput(EditorInfo attribute, boolean restarting) {
super.onStartInput(attribute, restarting);
mInputConnection = getCurrentInputConnection();
if (mComposingText != null) {
mComposingText.clear();
}
}
/** @see android.inputmethodservice.InputMethodService#onStartInputView */
@Override public void onStartInputView(EditorInfo attribute, boolean restarting) {
super.onStartInputView(attribute, restarting);
mInputConnection = getCurrentInputConnection();
setCandidatesViewShown(false);
if (mInputConnection != null) {
mDirectInputMode = false;
if (mConverter != null) { mConverter.init(); }
} else {
mDirectInputMode = true;
}
SharedPreferences pref = PreferenceManager.getDefaultSharedPreferences(this);
if (mCandidatesViewManager != null) { mCandidatesViewManager.setPreferences(pref); }
if (mInputViewManager != null) { mInputViewManager.setPreferences(pref, attribute); }
if (mPreConverter != null) { mPreConverter.setPreferences(pref); }
if (mConverter != null) { mConverter.setPreferences(pref); }
}
/** @see android.inputmethodservice.InputMethodService#requestHideSelf */
@Override public void requestHideSelf(int flag) {
super.requestHideSelf(flag);
if (mInputViewManager == null) {
hideWindow();
}
}
/** @see android.inputmethodservice.InputMethodService#setCandidatesViewShown */
@Override public void setCandidatesViewShown(boolean shown) {
super.setCandidatesViewShown(shown);
if (shown) {
showWindow(true);
} else {
if (mAutoHideMode && mInputViewManager == null) {
hideWindow();
}
}
}
/** @see android.inputmethodservice.InputMethodService#hideWindow */
@Override public void hideWindow() {
super.hideWindow();
mDirectInputMode = true;
hideStatusIcon();
}
/** @see android.inputmethodservice.InputMethodService#onComputeInsets */
@Override public void onComputeInsets(InputMethodService.Insets outInsets) {
super.onComputeInsets(outInsets);
outInsets.contentTopInsets = outInsets.visibleTopInsets;
}
/**********************************************************************
* OpenWnn
**********************************************************************/
/**
* Process an event.
*
* @param ev An event
* @return {@code true} if the event is processed in this method; {@code false} if not.
*/
public boolean onEvent(OpenWnnEvent ev) {
return false;
}
/**
* Search a character for toggle input.
*
* @param prevChar The character input previous
* @param toggleTable Toggle table
* @param reverse {@code false} if toggle direction is forward, {@code true} if toggle direction is backward
* @return A character ({@code null} if no character is found)
*/
protected String searchToggleCharacter(String prevChar, String[] toggleTable, boolean reverse) {
for (int i = 0; i < toggleTable.length; i++) {
if (prevChar.equals(toggleTable[i])) {
if (reverse) {
i--;
if (i < 0) {
return toggleTable[toggleTable.length - 1];
} else {
return toggleTable[i];
}
} else {
i++;
if (i == toggleTable.length) {
return toggleTable[0];
} else {
return toggleTable[i];
}
}
}
}
return null;
}
/**
* Processing of resource open when IME ends.
*/
protected void close() {
if (mConverter != null) { mConverter.close(); }
}
}
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