352 lines
13 KiB
Java
352 lines
13 KiB
Java
/*
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* Copyright (C) 2008 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may not
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* use this file except in compliance with the License. You may obtain a copy of
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* the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations under
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* the License.
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*/
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package com.android.inputmethod.latin;
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import java.util.HashMap;
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import java.util.Locale;
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import java.util.Map;
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import android.content.Context;
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import android.content.res.Configuration;
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import android.content.res.Resources;
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import android.inputmethodservice.InputMethodService;
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public class KeyboardSwitcher {
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public static final int MODE_TEXT = 1;
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public static final int MODE_SYMBOLS = 2;
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public static final int MODE_PHONE = 3;
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public static final int MODE_URL = 4;
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public static final int MODE_EMAIL = 5;
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public static final int MODE_IM = 6;
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public static final int MODE_WEB = 7;
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public static final int MODE_TEXT_QWERTY = 0;
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public static final int MODE_TEXT_ALPHA = 1;
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public static final int MODE_TEXT_COUNT = 2;
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public static final int KEYBOARDMODE_NORMAL = R.id.mode_normal;
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public static final int KEYBOARDMODE_URL = R.id.mode_url;
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public static final int KEYBOARDMODE_EMAIL = R.id.mode_email;
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public static final int KEYBOARDMODE_IM = R.id.mode_im;
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public static final int KEYBOARDMODE_WEB = R.id.mode_webentry;
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private static final int SYMBOLS_MODE_STATE_NONE = 0;
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private static final int SYMBOLS_MODE_STATE_BEGIN = 1;
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private static final int SYMBOLS_MODE_STATE_SYMBOL = 2;
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LatinKeyboardView mInputView;
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private static final int[] ALPHABET_MODES = {
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KEYBOARDMODE_NORMAL,
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KEYBOARDMODE_URL,
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KEYBOARDMODE_EMAIL,
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KEYBOARDMODE_IM,
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KEYBOARDMODE_WEB};
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//LatinIME mContext;
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Context mContext;
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InputMethodService mInputMethodService;
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private KeyboardId mSymbolsId;
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private KeyboardId mSymbolsShiftedId;
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private KeyboardId mCurrentId;
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private Map<KeyboardId, LatinKeyboard> mKeyboards;
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private int mMode; /** One of the MODE_XXX values */
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private int mImeOptions;
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private int mTextMode = MODE_TEXT_QWERTY;
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private boolean mIsSymbols;
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private boolean mHasVoice;
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private boolean mVoiceOnPrimary;
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private boolean mPreferSymbols;
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private int mSymbolsModeState = SYMBOLS_MODE_STATE_NONE;
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private int mLastDisplayWidth;
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private LanguageSwitcher mLanguageSwitcher;
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private Locale mInputLocale;
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private boolean mEnableMultipleLanguages;
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KeyboardSwitcher(Context context, InputMethodService ims) {
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mContext = context;
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mKeyboards = new HashMap<KeyboardId, LatinKeyboard>();
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mSymbolsId = new KeyboardId(R.xml.kbd_symbols, false);
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mSymbolsShiftedId = new KeyboardId(R.xml.kbd_symbols_shift, false);
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mInputMethodService = ims;
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}
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/**
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* Sets the input locale, when there are multiple locales for input.
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* If no locale switching is required, then the locale should be set to null.
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* @param locale the current input locale, or null for default locale with no locale
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* button.
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*/
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void setLanguageSwitcher(LanguageSwitcher languageSwitcher) {
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mLanguageSwitcher = languageSwitcher;
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mInputLocale = mLanguageSwitcher.getInputLocale();
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mEnableMultipleLanguages = mLanguageSwitcher.getLocaleCount() > 1;
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}
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void setInputView(LatinKeyboardView inputView) {
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mInputView = inputView;
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}
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void makeKeyboards(boolean forceCreate) {
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if (forceCreate) mKeyboards.clear();
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// Configuration change is coming after the keyboard gets recreated. So don't rely on that.
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// If keyboards have already been made, check if we have a screen width change and
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// create the keyboard layouts again at the correct orientation
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int displayWidth = mInputMethodService.getMaxWidth();
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if (displayWidth == mLastDisplayWidth) return;
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mLastDisplayWidth = displayWidth;
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if (!forceCreate) mKeyboards.clear();
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mSymbolsId = new KeyboardId(R.xml.kbd_symbols, mHasVoice && !mVoiceOnPrimary);
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mSymbolsShiftedId = new KeyboardId(R.xml.kbd_symbols_shift,
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mHasVoice && !mVoiceOnPrimary);
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}
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/**
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* Represents the parameters necessary to construct a new LatinKeyboard,
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* which also serve as a unique identifier for each keyboard type.
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*/
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private static class KeyboardId {
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public int mXml;
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public int mKeyboardMode; /** A KEYBOARDMODE_XXX value */
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public boolean mEnableShiftLock;
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public boolean mHasVoice;
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public KeyboardId(int xml, int mode, boolean enableShiftLock, boolean hasVoice) {
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this.mXml = xml;
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this.mKeyboardMode = mode;
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this.mEnableShiftLock = enableShiftLock;
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this.mHasVoice = hasVoice;
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}
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public KeyboardId(int xml, boolean hasVoice) {
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this(xml, 0, false, hasVoice);
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}
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public boolean equals(Object other) {
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return other instanceof KeyboardId && equals((KeyboardId) other);
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}
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public boolean equals(KeyboardId other) {
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return other.mXml == this.mXml
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&& other.mKeyboardMode == this.mKeyboardMode
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&& other.mEnableShiftLock == this.mEnableShiftLock;
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}
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public int hashCode() {
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return (mXml + 1) * (mKeyboardMode + 1) * (mEnableShiftLock ? 2 : 1)
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* (mHasVoice ? 4 : 8);
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}
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}
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void setVoiceMode(boolean enableVoice, boolean voiceOnPrimary) {
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if (enableVoice != mHasVoice || voiceOnPrimary != mVoiceOnPrimary) {
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mKeyboards.clear();
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}
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mHasVoice = enableVoice;
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mVoiceOnPrimary = voiceOnPrimary;
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setKeyboardMode(mMode, mImeOptions, mHasVoice,
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mIsSymbols);
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}
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boolean hasVoiceButton(boolean isSymbols) {
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return mHasVoice && (isSymbols != mVoiceOnPrimary);
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}
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void setKeyboardMode(int mode, int imeOptions, boolean enableVoice) {
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mSymbolsModeState = SYMBOLS_MODE_STATE_NONE;
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mPreferSymbols = mode == MODE_SYMBOLS;
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setKeyboardMode(mode == MODE_SYMBOLS ? MODE_TEXT : mode, imeOptions, enableVoice,
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mPreferSymbols);
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}
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void setKeyboardMode(int mode, int imeOptions, boolean enableVoice, boolean isSymbols) {
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if (mInputView == null) return;
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mMode = mode;
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mImeOptions = imeOptions;
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if (enableVoice != mHasVoice) {
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setVoiceMode(mHasVoice, mVoiceOnPrimary);
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}
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mIsSymbols = isSymbols;
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mInputView.setPreviewEnabled(true);
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KeyboardId id = getKeyboardId(mode, imeOptions, isSymbols);
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LatinKeyboard keyboard = getKeyboard(id);
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if (mode == MODE_PHONE) {
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mInputView.setPhoneKeyboard(keyboard);
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mInputView.setPreviewEnabled(false);
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}
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mCurrentId = id;
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mInputView.setKeyboard(keyboard);
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keyboard.setShifted(false);
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keyboard.setShiftLocked(keyboard.isShiftLocked());
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keyboard.setImeOptions(mContext.getResources(), mMode, imeOptions);
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}
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private LatinKeyboard getKeyboard(KeyboardId id) {
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if (!mKeyboards.containsKey(id)) {
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Resources orig = mContext.getResources();
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Configuration conf = orig.getConfiguration();
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Locale saveLocale = conf.locale;
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conf.locale = mInputLocale;
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orig.updateConfiguration(conf, null);
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LatinKeyboard keyboard = new LatinKeyboard(
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mContext, id.mXml, id.mKeyboardMode);
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keyboard.setVoiceMode(hasVoiceButton(id.mXml == R.xml.kbd_symbols), mHasVoice);
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keyboard.setLanguageSwitcher(mLanguageSwitcher);
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if (id.mKeyboardMode == KEYBOARDMODE_NORMAL
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|| id.mKeyboardMode == KEYBOARDMODE_URL
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|| id.mKeyboardMode == KEYBOARDMODE_IM
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|| id.mKeyboardMode == KEYBOARDMODE_EMAIL
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|| id.mKeyboardMode == KEYBOARDMODE_WEB
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) {
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keyboard.setExtension(R.xml.kbd_extension);
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}
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if (id.mEnableShiftLock) {
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keyboard.enableShiftLock();
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}
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mKeyboards.put(id, keyboard);
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conf.locale = saveLocale;
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orig.updateConfiguration(conf, null);
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}
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return mKeyboards.get(id);
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}
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private KeyboardId getKeyboardId(int mode, int imeOptions, boolean isSymbols) {
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boolean hasVoice = hasVoiceButton(isSymbols);
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if (isSymbols) {
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return (mode == MODE_PHONE)
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? new KeyboardId(R.xml.kbd_phone_symbols, hasVoice)
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: new KeyboardId(R.xml.kbd_symbols, hasVoice);
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}
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switch (mode) {
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case MODE_TEXT:
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if (mTextMode == MODE_TEXT_QWERTY) {
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return new KeyboardId(R.xml.kbd_qwerty, KEYBOARDMODE_NORMAL, true, hasVoice);
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} else if (mTextMode == MODE_TEXT_ALPHA) {
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return new KeyboardId(R.xml.kbd_alpha, KEYBOARDMODE_NORMAL, true, hasVoice);
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}
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break;
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case MODE_SYMBOLS:
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return new KeyboardId(R.xml.kbd_symbols, hasVoice);
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case MODE_PHONE:
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return new KeyboardId(R.xml.kbd_phone, hasVoice);
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case MODE_URL:
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return new KeyboardId(R.xml.kbd_qwerty, KEYBOARDMODE_URL, true, hasVoice);
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case MODE_EMAIL:
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return new KeyboardId(R.xml.kbd_qwerty, KEYBOARDMODE_EMAIL, true, hasVoice);
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case MODE_IM:
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return new KeyboardId(R.xml.kbd_qwerty, KEYBOARDMODE_IM, true, hasVoice);
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case MODE_WEB:
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return new KeyboardId(R.xml.kbd_qwerty, KEYBOARDMODE_WEB, true, hasVoice);
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}
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return null;
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}
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int getKeyboardMode() {
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return mMode;
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}
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boolean isTextMode() {
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return mMode == MODE_TEXT;
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}
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int getTextMode() {
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return mTextMode;
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}
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void setTextMode(int position) {
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if (position < MODE_TEXT_COUNT && position >= 0) {
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mTextMode = position;
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}
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if (isTextMode()) {
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setKeyboardMode(MODE_TEXT, mImeOptions, mHasVoice);
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}
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}
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int getTextModeCount() {
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return MODE_TEXT_COUNT;
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}
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boolean isAlphabetMode() {
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int currentMode = mCurrentId.mKeyboardMode;
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for (Integer mode : ALPHABET_MODES) {
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if (currentMode == mode) {
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return true;
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}
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}
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return false;
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}
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void toggleShift() {
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if (mCurrentId.equals(mSymbolsId)) {
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LatinKeyboard symbolsKeyboard = getKeyboard(mSymbolsId);
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LatinKeyboard symbolsShiftedKeyboard = getKeyboard(mSymbolsShiftedId);
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symbolsKeyboard.setShifted(true);
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mCurrentId = mSymbolsShiftedId;
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mInputView.setKeyboard(symbolsShiftedKeyboard);
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symbolsShiftedKeyboard.setShifted(true);
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symbolsShiftedKeyboard.setImeOptions(mContext.getResources(), mMode, mImeOptions);
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} else if (mCurrentId.equals(mSymbolsShiftedId)) {
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LatinKeyboard symbolsKeyboard = getKeyboard(mSymbolsId);
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LatinKeyboard symbolsShiftedKeyboard = getKeyboard(mSymbolsShiftedId);
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symbolsShiftedKeyboard.setShifted(false);
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mCurrentId = mSymbolsId;
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mInputView.setKeyboard(getKeyboard(mSymbolsId));
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symbolsKeyboard.setShifted(false);
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symbolsKeyboard.setImeOptions(mContext.getResources(), mMode, mImeOptions);
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}
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}
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void toggleSymbols() {
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setKeyboardMode(mMode, mImeOptions, mHasVoice, !mIsSymbols);
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if (mIsSymbols && !mPreferSymbols) {
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mSymbolsModeState = SYMBOLS_MODE_STATE_BEGIN;
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} else {
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mSymbolsModeState = SYMBOLS_MODE_STATE_NONE;
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}
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}
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/**
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* Updates state machine to figure out when to automatically switch back to alpha mode.
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* Returns true if the keyboard needs to switch back
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*/
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boolean onKey(int key) {
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// Switch back to alpha mode if user types one or more non-space/enter characters
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// followed by a space/enter
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switch (mSymbolsModeState) {
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case SYMBOLS_MODE_STATE_BEGIN:
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if (key != LatinIME.KEYCODE_SPACE && key != LatinIME.KEYCODE_ENTER && key > 0) {
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mSymbolsModeState = SYMBOLS_MODE_STATE_SYMBOL;
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}
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break;
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case SYMBOLS_MODE_STATE_SYMBOL:
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if (key == LatinIME.KEYCODE_ENTER || key == LatinIME.KEYCODE_SPACE) return true;
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break;
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}
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return false;
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}
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}
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