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/*
* Copyright (C) 2009 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 com.android.inputmethod.pinyin;
import android.view.KeyEvent;
import android.view.inputmethod.InputConnection;
/**
* Class to handle English input.
*/
public class EnglishInputProcessor {
private int mLastKeyCode = KeyEvent.KEYCODE_UNKNOWN;
public boolean processKey(InputConnection inputContext, KeyEvent event,
boolean upperCase, boolean realAction) {
if (null == inputContext || null == event) return false;
int keyCode = event.getKeyCode();
CharSequence prefix = null;
prefix = inputContext.getTextBeforeCursor(2, 0);
int keyChar;
keyChar = 0;
if (keyCode >= KeyEvent.KEYCODE_A && keyCode <= KeyEvent.KEYCODE_Z) {
keyChar = keyCode - KeyEvent.KEYCODE_A + 'a';
if (upperCase) {
keyChar = keyChar + 'A' - 'a';
}
} else if (keyCode >= KeyEvent.KEYCODE_0
&& keyCode <= KeyEvent.KEYCODE_9)
keyChar = keyCode - KeyEvent.KEYCODE_0 + '0';
else if (keyCode == KeyEvent.KEYCODE_COMMA)
keyChar = ',';
else if (keyCode == KeyEvent.KEYCODE_PERIOD)
keyChar = '.';
else if (keyCode == KeyEvent.KEYCODE_APOSTROPHE)
keyChar = '\'';
else if (keyCode == KeyEvent.KEYCODE_AT)
keyChar = '@';
else if (keyCode == KeyEvent.KEYCODE_SLASH) keyChar = '/';
if (0 == keyChar) {
mLastKeyCode = keyCode;
String insert = null;
if (KeyEvent.KEYCODE_DEL == keyCode) {
if (realAction) {
inputContext.deleteSurroundingText(1, 0);
}
} else if (KeyEvent.KEYCODE_ENTER == keyCode) {
insert = "\n";
} else if (KeyEvent.KEYCODE_SPACE == keyCode) {
insert = " ";
} else {
return false;
}
if (null != insert && realAction)
inputContext.commitText(insert, insert.length());
return true;
}
if (!realAction)
return true;
if (KeyEvent.KEYCODE_SHIFT_LEFT == mLastKeyCode
|| KeyEvent.KEYCODE_SHIFT_LEFT == mLastKeyCode) {
if (keyChar >= 'a' && keyChar <= 'z')
keyChar = keyChar - 'a' + 'A';
} else if (KeyEvent.KEYCODE_ALT_LEFT == mLastKeyCode) {
}
String result = String.valueOf((char) keyChar);
inputContext.commitText(result, result.length());
mLastKeyCode = keyCode;
return true;
}
}
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