LatinIME/java/src/com/android/inputmethod/latin/SettingsValues.java

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/*
* 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 com.android.inputmethod.latin;
import android.content.Context;
import android.content.SharedPreferences;
import android.content.res.Resources;
import android.os.Build;
import android.util.Log;
import android.view.inputmethod.EditorInfo;
import com.android.inputmethod.compat.InputMethodInfoCompatWrapper;
import com.android.inputmethod.compat.InputTypeCompatUtils;
import com.android.inputmethod.compat.VibratorCompatWrapper;
import com.android.inputmethod.keyboard.internal.KeySpecParser;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.Locale;
public class SettingsValues {
private static final String TAG = SettingsValues.class.getSimpleName();
// From resources:
public final int mDelayUpdateOldSuggestions;
public final String mWeakSpaceStrippers;
public final String mWeakSpaceSwappers;
private final String mPhantomSpacePromotingSymbols;
public final SuggestedWords mSuggestPuncList;
private final String mSymbolsExcludedFromWordSeparators;
public final String mWordSeparators;
public final CharSequence mHintToSaveText;
// From preferences, in the same order as xml/prefs.xml:
public final boolean mAutoCap;
public final boolean mVibrateOn;
public final boolean mSoundOn;
public final boolean mKeyPreviewPopupOn;
private final String mVoiceMode;
private final String mAutoCorrectionThresholdRawValue;
public final String mShowSuggestionsSetting;
@SuppressWarnings("unused") // TODO: Use this
private final boolean mUsabilityStudyMode;
public final boolean mIncludesOtherImesInLanguageSwitchList;
public final boolean mIsLanguageSwitchKeySuppressed;
@SuppressWarnings("unused") // TODO: Use this
private final String mKeyPreviewPopupDismissDelayRawValue;
public final boolean mUseContactsDict;
// Suggestion: use bigrams to adjust scores of suggestions obtained from unigram dictionary
public final boolean mBigramSuggestionEnabled;
// Prediction: use bigrams to predict the next word when there is no input for it yet
public final boolean mBigramPredictionEnabled;
public final boolean mEnableSuggestionSpanInsertion;
@SuppressWarnings("unused") // TODO: Use this
private final int mVibrationDurationSettingsRawValue;
@SuppressWarnings("unused") // TODO: Use this
private final float mKeypressSoundVolumeRawValue;
// Deduced settings
public final int mKeypressVibrationDuration;
public final float mFxVolume;
public final int mKeyPreviewPopupDismissDelay;
public final boolean mAutoCorrectEnabled;
public final double mAutoCorrectionThreshold;
private final boolean mVoiceKeyEnabled;
private final boolean mVoiceKeyOnMain;
public SettingsValues(final SharedPreferences prefs, final Context context,
final String localeStr) {
final Resources res = context.getResources();
final Locale savedLocale;
if (null != localeStr) {
final Locale keyboardLocale = LocaleUtils.constructLocaleFromString(localeStr);
savedLocale = LocaleUtils.setSystemLocale(res, keyboardLocale);
} else {
savedLocale = null;
}
// Get the resources
mDelayUpdateOldSuggestions = res.getInteger(R.integer.config_delay_update_old_suggestions);
mWeakSpaceStrippers = res.getString(R.string.weak_space_stripping_symbols);
mWeakSpaceSwappers = res.getString(R.string.weak_space_swapping_symbols);
mPhantomSpacePromotingSymbols = res.getString(R.string.phantom_space_promoting_symbols);
if (LatinImeLogger.sDBG) {
final int length = mWeakSpaceStrippers.length();
for (int i = 0; i < length; i = mWeakSpaceStrippers.offsetByCodePoints(i, 1)) {
if (isWeakSpaceSwapper(mWeakSpaceStrippers.codePointAt(i))) {
throw new RuntimeException("Char code " + mWeakSpaceStrippers.codePointAt(i)
+ " is both a weak space swapper and stripper.");
}
}
}
final String[] suggestPuncsSpec = KeySpecParser.parseCsvString(
res.getString(R.string.suggested_punctuations), res, R.string.english_ime_name);
mSuggestPuncList = createSuggestPuncList(suggestPuncsSpec);
mSymbolsExcludedFromWordSeparators =
res.getString(R.string.symbols_excluded_from_word_separators);
mWordSeparators = createWordSeparators(mWeakSpaceStrippers, mWeakSpaceSwappers,
mSymbolsExcludedFromWordSeparators, res);
mHintToSaveText = context.getText(R.string.hint_add_to_dictionary);
// Get the settings preferences
mAutoCap = prefs.getBoolean(Settings.PREF_AUTO_CAP, true);
mVibrateOn = isVibrateOn(context, prefs, res);
mSoundOn = prefs.getBoolean(Settings.PREF_SOUND_ON,
res.getBoolean(R.bool.config_default_sound_enabled));
mKeyPreviewPopupOn = isKeyPreviewPopupEnabled(prefs, res);
final String voiceModeMain = res.getString(R.string.voice_mode_main);
final String voiceModeOff = res.getString(R.string.voice_mode_off);
mVoiceMode = prefs.getString(Settings.PREF_VOICE_MODE, voiceModeMain);
mAutoCorrectionThresholdRawValue = prefs.getString(Settings.PREF_AUTO_CORRECTION_THRESHOLD,
res.getString(R.string.auto_correction_threshold_mode_index_modest));
mShowSuggestionsSetting = prefs.getString(Settings.PREF_SHOW_SUGGESTIONS_SETTING,
res.getString(R.string.prefs_suggestion_visibility_default_value));
mUsabilityStudyMode = getUsabilityStudyMode(prefs);
mIncludesOtherImesInLanguageSwitchList = prefs.getBoolean(
Settings.PREF_INCLUDE_OTHER_IMES_IN_LANGUAGE_SWITCH_LIST, false);
mIsLanguageSwitchKeySuppressed = isLanguageSwitchKeySupressed(prefs);
mKeyPreviewPopupDismissDelayRawValue = prefs.getString(
Settings.PREF_KEY_PREVIEW_POPUP_DISMISS_DELAY,
Integer.toString(res.getInteger(R.integer.config_key_preview_linger_timeout)));
mUseContactsDict = prefs.getBoolean(Settings.PREF_KEY_USE_CONTACTS_DICT, true);
mAutoCorrectEnabled = isAutoCorrectEnabled(res, mAutoCorrectionThresholdRawValue);
mBigramSuggestionEnabled = mAutoCorrectEnabled
&& isBigramSuggestionEnabled(prefs, res, mAutoCorrectEnabled);
mBigramPredictionEnabled = mBigramSuggestionEnabled
&& isBigramPredictionEnabled(prefs, res);
mEnableSuggestionSpanInsertion =
prefs.getBoolean(Settings.PREF_KEY_ENABLE_SPAN_INSERT, true);
mVibrationDurationSettingsRawValue =
prefs.getInt(Settings.PREF_VIBRATION_DURATION_SETTINGS, -1);
mKeypressSoundVolumeRawValue = prefs.getFloat(Settings.PREF_KEYPRESS_SOUND_VOLUME, -1.0f);
// Compute other readable settings
mKeypressVibrationDuration = getCurrentVibrationDuration(prefs, res);
mFxVolume = getCurrentKeypressSoundVolume(prefs, res);
mKeyPreviewPopupDismissDelay = getKeyPreviewPopupDismissDelay(prefs, res);
mAutoCorrectionThreshold = getAutoCorrectionThreshold(res,
mAutoCorrectionThresholdRawValue);
mVoiceKeyEnabled = mVoiceMode != null && !mVoiceMode.equals(voiceModeOff);
mVoiceKeyOnMain = mVoiceMode != null && mVoiceMode.equals(voiceModeMain);
LocaleUtils.setSystemLocale(res, savedLocale);
}
// Helper functions to create member values.
private static SuggestedWords createSuggestPuncList(final String[] puncs) {
final ArrayList<SuggestedWords.SuggestedWordInfo> puncList =
new ArrayList<SuggestedWords.SuggestedWordInfo>();
if (puncs != null) {
for (final String puncSpec : puncs) {
puncList.add(new SuggestedWords.SuggestedWordInfo(
KeySpecParser.getLabel(puncSpec)));
}
}
return new SuggestedWords(puncList,
false /* typedWordValid */,
false /* hasAutoCorrectionCandidate */,
false /* allowsToBeAutoCorrected */,
true /* isPunctuationSuggestions */);
}
private static String createWordSeparators(final String weakSpaceStrippers,
final String weakSpaceSwappers, final String symbolsExcludedFromWordSeparators,
final Resources res) {
String wordSeparators = weakSpaceStrippers + weakSpaceSwappers
+ res.getString(R.string.phantom_space_promoting_symbols);
for (int i = symbolsExcludedFromWordSeparators.length() - 1; i >= 0; --i) {
wordSeparators = wordSeparators.replace(
symbolsExcludedFromWordSeparators.substring(i, i + 1), "");
}
return wordSeparators;
}
private static boolean isVibrateOn(final Context context, final SharedPreferences prefs,
final Resources res) {
final boolean hasVibrator = VibratorCompatWrapper.getInstance(context).hasVibrator();
return hasVibrator && prefs.getBoolean(Settings.PREF_VIBRATE_ON,
res.getBoolean(R.bool.config_default_vibration_enabled));
}
public boolean isWordSeparator(int code) {
return mWordSeparators.contains(String.valueOf((char)code));
}
public boolean isSymbolExcludedFromWordSeparators(int code) {
return mSymbolsExcludedFromWordSeparators.contains(String.valueOf((char)code));
}
public boolean isWeakSpaceStripper(int code) {
// TODO: this does not work if the code does not fit in a char
return mWeakSpaceStrippers.contains(String.valueOf((char)code));
}
public boolean isWeakSpaceSwapper(int code) {
// TODO: this does not work if the code does not fit in a char
return mWeakSpaceSwappers.contains(String.valueOf((char)code));
}
public boolean isPhantomSpacePromotingSymbol(int code) {
// TODO: this does not work if the code does not fit in a char
return mPhantomSpacePromotingSymbols.contains(String.valueOf((char)code));
}
private static boolean isAutoCorrectEnabled(final Resources resources,
final String currentAutoCorrectionSetting) {
final String autoCorrectionOff = resources.getString(
R.string.auto_correction_threshold_mode_index_off);
return !currentAutoCorrectionSetting.equals(autoCorrectionOff);
}
// Public to access from KeyboardSwitcher. Should it have access to some
// process-global instance instead?
public static boolean isKeyPreviewPopupEnabled(SharedPreferences sp, Resources resources) {
final boolean showPopupOption = resources.getBoolean(
R.bool.config_enable_show_popup_on_keypress_option);
if (!showPopupOption) return resources.getBoolean(R.bool.config_default_popup_preview);
return sp.getBoolean(Settings.PREF_POPUP_ON,
resources.getBoolean(R.bool.config_default_popup_preview));
}
// Likewise
public static int getKeyPreviewPopupDismissDelay(SharedPreferences sp,
Resources resources) {
// TODO: use mKeyPreviewPopupDismissDelayRawValue instead of reading it again here.
return Integer.parseInt(sp.getString(Settings.PREF_KEY_PREVIEW_POPUP_DISMISS_DELAY,
Integer.toString(resources.getInteger(
R.integer.config_key_preview_linger_timeout))));
}
private static boolean isBigramSuggestionEnabled(final SharedPreferences sp,
final Resources resources, final boolean autoCorrectEnabled) {
final boolean showBigramSuggestionsOption = resources.getBoolean(
R.bool.config_enable_bigram_suggestions_option);
if (!showBigramSuggestionsOption) {
return autoCorrectEnabled;
}
return sp.getBoolean(Settings.PREF_BIGRAM_SUGGESTION, resources.getBoolean(
R.bool.config_default_bigram_suggestions));
}
private static boolean isBigramPredictionEnabled(final SharedPreferences sp,
final Resources resources) {
return sp.getBoolean(Settings.PREF_BIGRAM_PREDICTIONS, resources.getBoolean(
R.bool.config_default_bigram_prediction));
}
private static double getAutoCorrectionThreshold(final Resources resources,
final String currentAutoCorrectionSetting) {
final String[] autoCorrectionThresholdValues = resources.getStringArray(
R.array.auto_correction_threshold_values);
// When autoCorrectionThreshold is greater than 1.0, it's like auto correction is off.
double autoCorrectionThreshold = Double.MAX_VALUE;
try {
final int arrayIndex = Integer.valueOf(currentAutoCorrectionSetting);
if (arrayIndex >= 0 && arrayIndex < autoCorrectionThresholdValues.length) {
autoCorrectionThreshold = Double.parseDouble(
autoCorrectionThresholdValues[arrayIndex]);
}
} catch (NumberFormatException e) {
// Whenever the threshold settings are correct, never come here.
autoCorrectionThreshold = Double.MAX_VALUE;
Log.w(TAG, "Cannot load auto correction threshold setting."
+ " currentAutoCorrectionSetting: " + currentAutoCorrectionSetting
+ ", autoCorrectionThresholdValues: "
+ Arrays.toString(autoCorrectionThresholdValues));
}
return autoCorrectionThreshold;
}
public boolean isVoiceKeyEnabled(final EditorInfo editorInfo) {
final boolean shortcutImeEnabled = SubtypeSwitcher.getInstance().isShortcutImeEnabled();
final int inputType = (editorInfo != null) ? editorInfo.inputType : 0;
return shortcutImeEnabled && mVoiceKeyEnabled
&& !InputTypeCompatUtils.isPasswordInputType(inputType);
}
public boolean isVoiceKeyOnMain() {
return mVoiceKeyOnMain;
}
public static boolean isLanguageSwitchKeySupressed(SharedPreferences sp) {
return sp.getBoolean(Settings.PREF_SUPPRESS_LANGUAGE_SWITCH_KEY, false);
}
public boolean isLanguageSwitchKeyEnabled(Context context) {
if (mIsLanguageSwitchKeySuppressed) {
return false;
}
if (mIncludesOtherImesInLanguageSwitchList) {
return SubtypeUtils.hasMultipleEnabledIMEsOrSubtypes(/* include aux subtypes */false);
} else {
return SubtypeUtils.hasMultipleEnabledSubtypesInThisIme(
context, /* include aux subtypes */false);
}
}
public boolean isFullscreenModeAllowed(Resources res) {
return res.getBoolean(R.bool.config_use_fullscreen_mode);
}
// Accessed from the settings interface, hence public
public static float getCurrentKeypressSoundVolume(final SharedPreferences sp,
final Resources res) {
// TODO: use mVibrationDurationSettingsRawValue instead of reading it again here
final float volume = sp.getFloat(Settings.PREF_KEYPRESS_SOUND_VOLUME, -1.0f);
if (volume >= 0) {
return volume;
}
final String[] volumePerHardwareList = res.getStringArray(R.array.keypress_volumes);
final String hardwarePrefix = Build.HARDWARE + ",";
for (final String element : volumePerHardwareList) {
if (element.startsWith(hardwarePrefix)) {
return Float.parseFloat(element.substring(element.lastIndexOf(',') + 1));
}
}
return -1.0f;
}
// Likewise
public static int getCurrentVibrationDuration(final SharedPreferences sp,
final Resources res) {
// TODO: use mKeypressVibrationDuration instead of reading it again here
final int ms = sp.getInt(Settings.PREF_VIBRATION_DURATION_SETTINGS, -1);
if (ms >= 0) {
return ms;
}
final String[] durationPerHardwareList = res.getStringArray(
R.array.keypress_vibration_durations);
final String hardwarePrefix = Build.HARDWARE + ",";
for (final String element : durationPerHardwareList) {
if (element.startsWith(hardwarePrefix)) {
return (int)Long.parseLong(element.substring(element.lastIndexOf(',') + 1));
}
}
return -1;
}
// Likewise
public static boolean getUsabilityStudyMode(final SharedPreferences prefs) {
// TODO: use mUsabilityStudyMode instead of reading it again here
return prefs.getBoolean(Settings.PREF_USABILITY_STUDY_MODE, true);
}
}