/*
* Copyright (C) 2008 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 static com.android.inputmethod.latin.Constants.ImeOption.FORCE_ASCII;
import static com.android.inputmethod.latin.Constants.ImeOption.NO_MICROPHONE;
import static com.android.inputmethod.latin.Constants.ImeOption.NO_MICROPHONE_COMPAT;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.SharedPreferences;
import android.content.pm.ApplicationInfo;
import android.content.res.Configuration;
import android.content.res.Resources;
import android.graphics.Rect;
import android.inputmethodservice.InputMethodService;
import android.media.AudioManager;
import android.net.ConnectivityManager;
import android.os.Debug;
import android.os.IBinder;
import android.os.Message;
import android.os.SystemClock;
import android.preference.PreferenceManager;
import android.text.InputType;
import android.text.TextUtils;
import android.util.Log;
import android.util.PrintWriterPrinter;
import android.util.Printer;
import android.view.KeyCharacterMap;
import android.view.KeyEvent;
import android.view.View;
import android.view.ViewGroup.LayoutParams;
import android.view.Window;
import android.view.WindowManager;
import android.view.inputmethod.CompletionInfo;
import android.view.inputmethod.CorrectionInfo;
import android.view.inputmethod.EditorInfo;
import android.view.inputmethod.InputMethodSubtype;
import com.android.inputmethod.accessibility.AccessibilityUtils;
import com.android.inputmethod.accessibility.AccessibleKeyboardViewProxy;
import com.android.inputmethod.compat.CompatUtils;
import com.android.inputmethod.compat.InputMethodManagerCompatWrapper;
import com.android.inputmethod.compat.InputMethodServiceCompatUtils;
import com.android.inputmethod.compat.SuggestionSpanUtils;
import com.android.inputmethod.keyboard.KeyDetector;
import com.android.inputmethod.keyboard.Keyboard;
import com.android.inputmethod.keyboard.KeyboardActionListener;
import com.android.inputmethod.keyboard.KeyboardId;
import com.android.inputmethod.keyboard.KeyboardSwitcher;
import com.android.inputmethod.keyboard.KeyboardView;
import com.android.inputmethod.keyboard.MainKeyboardView;
import com.android.inputmethod.latin.LocaleUtils.RunInLocale;
import com.android.inputmethod.latin.define.ProductionFlag;
import com.android.inputmethod.latin.suggestions.SuggestionStripView;
import com.android.inputmethod.research.ResearchLogger;
import java.io.FileDescriptor;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Locale;
/**
* Input method implementation for Qwerty'ish keyboard.
*/
public class LatinIME extends InputMethodService implements KeyboardActionListener,
SuggestionStripView.Listener, TargetApplicationGetter.OnTargetApplicationKnownListener,
Suggest.SuggestInitializationListener {
private static final String TAG = LatinIME.class.getSimpleName();
private static final boolean TRACE = false;
private static boolean DEBUG;
private static final int EXTENDED_TOUCHABLE_REGION_HEIGHT = 100;
// How many continuous deletes at which to start deleting at a higher speed.
private static final int DELETE_ACCELERATE_AT = 20;
// Key events coming any faster than this are long-presses.
private static final int QUICK_PRESS = 200;
private static final int PENDING_IMS_CALLBACK_DURATION = 800;
/**
* The name of the scheme used by the Package Manager to warn of a new package installation,
* replacement or removal.
*/
private static final String SCHEME_PACKAGE = "package";
private static final int SPACE_STATE_NONE = 0;
// Double space: the state where the user pressed space twice quickly, which LatinIME
// resolved as period-space. Undoing this converts the period to a space.
private static final int SPACE_STATE_DOUBLE = 1;
// Swap punctuation: the state where a weak space and a punctuation from the suggestion strip
// have just been swapped. Undoing this swaps them back; the space is still considered weak.
private static final int SPACE_STATE_SWAP_PUNCTUATION = 2;
// Weak space: a space that should be swapped only by suggestion strip punctuation. Weak
// spaces happen when the user presses space, accepting the current suggestion (whether
// it's an auto-correction or not).
private static final int SPACE_STATE_WEAK = 3;
// Phantom space: a not-yet-inserted space that should get inserted on the next input,
// character provided it's not a separator. If it's a separator, the phantom space is dropped.
// Phantom spaces happen when a user chooses a word from the suggestion strip.
private static final int SPACE_STATE_PHANTOM = 4;
// Current space state of the input method. This can be any of the above constants.
private int mSpaceState;
private SettingsValues mCurrentSettings;
private View mExtractArea;
private View mKeyPreviewBackingView;
private View mSuggestionsContainer;
private SuggestionStripView mSuggestionStripView;
/* package for tests */ Suggest mSuggest;
private CompletionInfo[] mApplicationSpecifiedCompletions;
private ApplicationInfo mTargetApplicationInfo;
private InputMethodManagerCompatWrapper mImm;
private Resources mResources;
private SharedPreferences mPrefs;
/* package for tests */ final KeyboardSwitcher mKeyboardSwitcher;
private final SubtypeSwitcher mSubtypeSwitcher;
private boolean mShouldSwitchToLastSubtype = true;
private boolean mIsMainDictionaryAvailable;
private UserBinaryDictionary mUserDictionary;
private UserHistoryDictionary mUserHistoryDictionary;
private boolean mIsUserDictionaryAvailable;
private LastComposedWord mLastComposedWord = LastComposedWord.NOT_A_COMPOSED_WORD;
private WordComposer mWordComposer = new WordComposer();
private RichInputConnection mConnection = new RichInputConnection(this);
// Keep track of the last selection range to decide if we need to show word alternatives
private static final int NOT_A_CURSOR_POSITION = -1;
private int mLastSelectionStart = NOT_A_CURSOR_POSITION;
private int mLastSelectionEnd = NOT_A_CURSOR_POSITION;
// Whether we are expecting an onUpdateSelection event to fire. If it does when we don't
// "expect" it, it means the user actually moved the cursor.
private boolean mExpectingUpdateSelection;
private int mDeleteCount;
private long mLastKeyTime;
private AudioAndHapticFeedbackManager mFeedbackManager;
// Member variables for remembering the current device orientation.
private int mDisplayOrientation;
// Object for reacting to adding/removing a dictionary pack.
private BroadcastReceiver mDictionaryPackInstallReceiver =
new DictionaryPackInstallBroadcastReceiver(this);
// Keeps track of most recently inserted text (multi-character key) for reverting
private CharSequence mEnteredText;
private boolean mIsAutoCorrectionIndicatorOn;
private AlertDialog mOptionsDialog;
private final boolean mIsHardwareAcceleratedDrawingEnabled;
public final UIHandler mHandler = new UIHandler(this);
public static class UIHandler extends StaticInnerHandlerWrapper<LatinIME> {
private static final int MSG_UPDATE_SHIFT_STATE = 1;
private static final int MSG_PENDING_IMS_CALLBACK = 6;
private static final int MSG_UPDATE_SUGGESTION_STRIP = 7;
private int mDelayUpdateSuggestions;
private int mDelayUpdateShiftState;
private long mDoubleSpacesTurnIntoPeriodTimeout;
private long mDoubleSpaceTimerStart;
public UIHandler(LatinIME outerInstance) {
super(outerInstance);
}
public void onCreate() {
final Resources res = getOuterInstance().getResources();
mDelayUpdateSuggestions =
res.getInteger(R.integer.config_delay_update_suggestions);
mDelayUpdateShiftState =
res.getInteger(R.integer.config_delay_update_shift_state);
mDoubleSpacesTurnIntoPeriodTimeout = res.getInteger(
R.integer.config_double_spaces_turn_into_period_timeout);
}
@Override
public void handleMessage(Message msg) {
final LatinIME latinIme = getOuterInstance();
final KeyboardSwitcher switcher = latinIme.mKeyboardSwitcher;
switch (msg.what) {
case MSG_UPDATE_SUGGESTION_STRIP:
latinIme.updateSuggestionStrip();
break;
case MSG_UPDATE_SHIFT_STATE:
switcher.updateShiftState();
break;
}
}
public void postUpdateSuggestionStrip() {
sendMessageDelayed(obtainMessage(MSG_UPDATE_SUGGESTION_STRIP), mDelayUpdateSuggestions);
}
public void cancelUpdateSuggestionStrip() {
removeMessages(MSG_UPDATE_SUGGESTION_STRIP);
}
public boolean hasPendingUpdateSuggestions() {
return hasMessages(MSG_UPDATE_SUGGESTION_STRIP);
}
public void postUpdateShiftState() {
removeMessages(MSG_UPDATE_SHIFT_STATE);
sendMessageDelayed(obtainMessage(MSG_UPDATE_SHIFT_STATE), mDelayUpdateShiftState);
}
public void cancelUpdateShiftState() {
removeMessages(MSG_UPDATE_SHIFT_STATE);
}
public void startDoubleSpacesTimer() {
mDoubleSpaceTimerStart = SystemClock.uptimeMillis();
}
public void cancelDoubleSpacesTimer() {
mDoubleSpaceTimerStart = 0;
}
public boolean isAcceptingDoubleSpaces() {
return SystemClock.uptimeMillis() - mDoubleSpaceTimerStart
< mDoubleSpacesTurnIntoPeriodTimeout;
}
// Working variables for the following methods.
private boolean mIsOrientationChanging;
private boolean mPendingSuccessiveImsCallback;
private boolean mHasPendingStartInput;
private boolean mHasPendingFinishInputView;
private boolean mHasPendingFinishInput;
private EditorInfo mAppliedEditorInfo;
public void startOrientationChanging() {
removeMessages(MSG_PENDING_IMS_CALLBACK);
resetPendingImsCallback();
mIsOrientationChanging = true;
final LatinIME latinIme = getOuterInstance();
if (latinIme.isInputViewShown()) {
latinIme.mKeyboardSwitcher.saveKeyboardState();
}
}
private void resetPendingImsCallback() {
mHasPendingFinishInputView = false;
mHasPendingFinishInput = false;
mHasPendingStartInput = false;
}
private void executePendingImsCallback(LatinIME latinIme, EditorInfo editorInfo,
boolean restarting) {
if (mHasPendingFinishInputView)
latinIme.onFinishInputViewInternal(mHasPendingFinishInput);
if (mHasPendingFinishInput)
latinIme.onFinishInputInternal();
if (mHasPendingStartInput)
latinIme.onStartInputInternal(editorInfo, restarting);
resetPendingImsCallback();
}
public void onStartInput(EditorInfo editorInfo, boolean restarting) {
if (hasMessages(MSG_PENDING_IMS_CALLBACK)) {
// Typically this is the second onStartInput after orientation changed.
mHasPendingStartInput = true;
} else {
if (mIsOrientationChanging && restarting) {
// This is the first onStartInput after orientation changed.
mIsOrientationChanging = false;
mPendingSuccessiveImsCallback = true;
}
final LatinIME latinIme = getOuterInstance();
executePendingImsCallback(latinIme, editorInfo, restarting);
latinIme.onStartInputInternal(editorInfo, restarting);
}
}
public void onStartInputView(EditorInfo editorInfo, boolean restarting) {
if (hasMessages(MSG_PENDING_IMS_CALLBACK)
&& KeyboardId.equivalentEditorInfoForKeyboard(editorInfo, mAppliedEditorInfo)) {
// Typically this is the second onStartInputView after orientation changed.
resetPendingImsCallback();
} else {
if (mPendingSuccessiveImsCallback) {
// This is the first onStartInputView after orientation changed.
mPendingSuccessiveImsCallback = false;
resetPendingImsCallback();
sendMessageDelayed(obtainMessage(MSG_PENDING_IMS_CALLBACK),
PENDING_IMS_CALLBACK_DURATION);
}
final LatinIME latinIme = getOuterInstance();
executePendingImsCallback(latinIme, editorInfo, restarting);
latinIme.onStartInputViewInternal(editorInfo, restarting);
mAppliedEditorInfo = editorInfo;
}
}
public void onFinishInputView(boolean finishingInput) {
if (hasMessages(MSG_PENDING_IMS_CALLBACK)) {
// Typically this is the first onFinishInputView after orientation changed.
mHasPendingFinishInputView = true;
} else {
final LatinIME latinIme = getOuterInstance();
latinIme.onFinishInputViewInternal(finishingInput);
mAppliedEditorInfo = null;
}
}
public void onFinishInput() {
if (hasMessages(MSG_PENDING_IMS_CALLBACK)) {
// Typically this is the first onFinishInput after orientation changed.
mHasPendingFinishInput = true;
} else {
final LatinIME latinIme = getOuterInstance();
executePendingImsCallback(latinIme, null, false);
latinIme.onFinishInputInternal();
}
}
}
public LatinIME() {
super();
mSubtypeSwitcher = SubtypeSwitcher.getInstance();
mKeyboardSwitcher = KeyboardSwitcher.getInstance();
mIsHardwareAcceleratedDrawingEnabled =
InputMethodServiceCompatUtils.enableHardwareAcceleration(this);
Log.i(TAG, "Hardware accelerated drawing: " + mIsHardwareAcceleratedDrawingEnabled);
}
@Override
public void onCreate() {
final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
mPrefs = prefs;
LatinImeLogger.init(this, prefs);
if (ProductionFlag.IS_EXPERIMENTAL) {
ResearchLogger.getInstance().init(this, prefs, mKeyboardSwitcher);
}
InputMethodManagerCompatWrapper.init(this);
SubtypeSwitcher.init(this);
KeyboardSwitcher.init(this, prefs);
AccessibilityUtils.init(this);
super.onCreate();
mImm = InputMethodManagerCompatWrapper.getInstance();
mHandler.onCreate();
DEBUG = LatinImeLogger.sDBG;
final Resources res = getResources();
mResources = res;
loadSettings();
ImfUtils.setAdditionalInputMethodSubtypes(this, mCurrentSettings.getAdditionalSubtypes());
Utils.GCUtils.getInstance().reset();
boolean tryGC = true;
// Shouldn't this be removed? I think that from Honeycomb on, the GC is now actually working
// as expected and this code is useless.
for (int i = 0; i < Utils.GCUtils.GC_TRY_LOOP_MAX && tryGC; ++i) {
try {
initSuggest();
tryGC = false;
} catch (OutOfMemoryError e) {
tryGC = Utils.GCUtils.getInstance().tryGCOrWait("InitSuggest", e);
}
}
mDisplayOrientation = res.getConfiguration().orientation;
// Register to receive ringer mode change and network state change.
// Also receive installation and removal of a dictionary pack.
final IntentFilter filter = new IntentFilter();
filter.addAction(ConnectivityManager.CONNECTIVITY_ACTION);
filter.addAction(AudioManager.RINGER_MODE_CHANGED_ACTION);
registerReceiver(mReceiver, filter);
final IntentFilter packageFilter = new IntentFilter();
packageFilter.addAction(Intent.ACTION_PACKAGE_ADDED);
packageFilter.addAction(Intent.ACTION_PACKAGE_REMOVED);
packageFilter.addDataScheme(SCHEME_PACKAGE);
registerReceiver(mDictionaryPackInstallReceiver, packageFilter);
final IntentFilter newDictFilter = new IntentFilter();
newDictFilter.addAction(
DictionaryPackInstallBroadcastReceiver.NEW_DICTIONARY_INTENT_ACTION);
registerReceiver(mDictionaryPackInstallReceiver, newDictFilter);
}
// Has to be package-visible for unit tests
/* package */ void loadSettings() {
// Note that the calling sequence of onCreate() and onCurrentInputMethodSubtypeChanged()
// is not guaranteed. It may even be called at the same time on a different thread.
if (null == mPrefs) mPrefs = PreferenceManager.getDefaultSharedPreferences(this);
final InputAttributes inputAttributes =
new InputAttributes(getCurrentInputEditorInfo(), isFullscreenMode());
final RunInLocale<SettingsValues> job = new RunInLocale<SettingsValues>() {
@Override
protected SettingsValues job(Resources res) {
return new SettingsValues(mPrefs, inputAttributes, LatinIME.this);
}
};
mCurrentSettings = job.runInLocale(mResources, mSubtypeSwitcher.getCurrentSubtypeLocale());
mFeedbackManager = new AudioAndHapticFeedbackManager(this, mCurrentSettings);
resetContactsDictionary(null == mSuggest ? null : mSuggest.getContactsDictionary());
}
@Override
public void onUpdateMainDictionaryAvailability(boolean isMainDictionaryAvailable) {
mIsMainDictionaryAvailable = isMainDictionaryAvailable;
updateKeyboardViewGestureHandlingModeByMainDictionaryAvailability();
}
private void initSuggest() {
final Locale subtypeLocale = mSubtypeSwitcher.getCurrentSubtypeLocale();
final String localeStr = subtypeLocale.toString();
final ContactsBinaryDictionary oldContactsDictionary;
if (mSuggest != null) {
oldContactsDictionary = mSuggest.getContactsDictionary();
mSuggest.close();
} else {
oldContactsDictionary = null;
}
mSuggest = new Suggest(this /* Context */, subtypeLocale,
this /* SuggestInitializationListener */);
if (mCurrentSettings.mCorrectionEnabled) {
mSuggest.setAutoCorrectionThreshold(mCurrentSettings.mAutoCorrectionThreshold);
}
mIsMainDictionaryAvailable = DictionaryFactory.isDictionaryAvailable(this, subtypeLocale);
if (ProductionFlag.IS_EXPERIMENTAL) {
ResearchLogger.getInstance().initSuggest(mSuggest);
}
mUserDictionary = new UserBinaryDictionary(this, localeStr);
mIsUserDictionaryAvailable = mUserDictionary.isEnabled();
mSuggest.setUserDictionary(mUserDictionary);
resetContactsDictionary(oldContactsDictionary);
// Note that the calling sequence of onCreate() and onCurrentInputMethodSubtypeChanged()
// is not guaranteed. It may even be called at the same time on a different thread.
if (null == mPrefs) mPrefs = PreferenceManager.getDefaultSharedPreferences(this);
mUserHistoryDictionary = UserHistoryDictionary.getInstance(this, localeStr, mPrefs);
mSuggest.setUserHistoryDictionary(mUserHistoryDictionary);
}
/**
* Resets the contacts dictionary in mSuggest according to the user settings.
*
* This method takes an optional contacts dictionary to use when the locale hasn't changed
* since the contacts dictionary can be opened or closed as necessary depending on the settings.
*
* @param oldContactsDictionary an optional dictionary to use, or null
*/
private void resetContactsDictionary(final ContactsBinaryDictionary oldContactsDictionary) {
final boolean shouldSetDictionary = (null != mSuggest && mCurrentSettings.mUseContactsDict);
final ContactsBinaryDictionary dictionaryToUse;
if (!shouldSetDictionary) {
// Make sure the dictionary is closed. If it is already closed, this is a no-op,
// so it's safe to call it anyways.
if (null != oldContactsDictionary) oldContactsDictionary.close();
dictionaryToUse = null;
} else {
final Locale locale = mSubtypeSwitcher.getCurrentSubtypeLocale();
if (null != oldContactsDictionary) {
if (!oldContactsDictionary.mLocale.equals(locale)) {
// If the locale has changed then recreate the contacts dictionary. This
// allows locale dependent rules for handling bigram name predictions.
oldContactsDictionary.close();
dictionaryToUse = new ContactsBinaryDictionary(this, locale);
} else {
// Make sure the old contacts dictionary is opened. If it is already open,
// this is a no-op, so it's safe to call it anyways.
oldContactsDictionary.reopen(this);
dictionaryToUse = oldContactsDictionary;
}
} else {
dictionaryToUse = new ContactsBinaryDictionary(this, locale);
}
}
if (null != mSuggest) {
mSuggest.setContactsDictionary(dictionaryToUse);
}
}
/* package private */ void resetSuggestMainDict() {
final Locale subtypeLocale = mSubtypeSwitcher.getCurrentSubtypeLocale();
mSuggest.resetMainDict(this, subtypeLocale);
mIsMainDictionaryAvailable = DictionaryFactory.isDictionaryAvailable(this, subtypeLocale);
}
@Override
public void onDestroy() {
if (mSuggest != null) {
mSuggest.close();
mSuggest = null;
}
unregisterReceiver(mReceiver);
unregisterReceiver(mDictionaryPackInstallReceiver);
LatinImeLogger.commit();
LatinImeLogger.onDestroy();
super.onDestroy();
}
@Override
public void onConfigurationChanged(Configuration conf) {
mSubtypeSwitcher.onConfigurationChanged(conf);
// If orientation changed while predicting, commit the change
if (mDisplayOrientation != conf.orientation) {
mDisplayOrientation = conf.orientation;
mHandler.startOrientationChanging();
mConnection.beginBatchEdit();
commitTyped(LastComposedWord.NOT_A_SEPARATOR);
mConnection.finishComposingText();
mConnection.endBatchEdit();
if (isShowingOptionDialog())
mOptionsDialog.dismiss();
}
super.onConfigurationChanged(conf);
}
@Override
public View onCreateInputView() {
return mKeyboardSwitcher.onCreateInputView();
}
@Override
public void setInputView(View view) {
super.setInputView(view);
mExtractArea = getWindow().getWindow().getDecorView()
.findViewById(android.R.id.extractArea);
mKeyPreviewBackingView = view.findViewById(R.id.key_preview_backing);
mSuggestionsContainer = view.findViewById(R.id.suggestions_container);
mSuggestionStripView = (SuggestionStripView)view.findViewById(R.id.suggestion_strip_view);
if (mSuggestionStripView != null)
mSuggestionStripView.setListener(this, view);
if (LatinImeLogger.sVISUALDEBUG) {
mKeyPreviewBackingView.setBackgroundColor(0x10FF0000);
}
}
@Override
public void setCandidatesView(View view) {
// To ensure that CandidatesView will never be set.
return;
}
@Override
public void onStartInput(EditorInfo editorInfo, boolean restarting) {
mHandler.onStartInput(editorInfo, restarting);
}
@Override
public void onStartInputView(EditorInfo editorInfo, boolean restarting) {
mHandler.onStartInputView(editorInfo, restarting);
}
@Override
public void onFinishInputView(boolean finishingInput) {
mHandler.onFinishInputView(finishingInput);
}
@Override
public void onFinishInput() {
mHandler.onFinishInput();
}
@Override
public void onCurrentInputMethodSubtypeChanged(InputMethodSubtype subtype) {
// Note that the calling sequence of onCreate() and onCurrentInputMethodSubtypeChanged()
// is not guaranteed. It may even be called at the same time on a different thread.
mSubtypeSwitcher.updateSubtype(subtype);
}
private void onStartInputInternal(EditorInfo editorInfo, boolean restarting) {
super.onStartInput(editorInfo, restarting);
}
@SuppressWarnings("deprecation")
private void onStartInputViewInternal(EditorInfo editorInfo, boolean restarting) {
super.onStartInputView(editorInfo, restarting);
final KeyboardSwitcher switcher = mKeyboardSwitcher;
MainKeyboardView inputView = switcher.getKeyboardView();
if (editorInfo == null) {
Log.e(TAG, "Null EditorInfo in onStartInputView()");
if (LatinImeLogger.sDBG) {
throw new NullPointerException("Null EditorInfo in onStartInputView()");
}
return;
}
if (DEBUG) {
Log.d(TAG, "onStartInputView: editorInfo:"
+ String.format("inputType=0x%08x imeOptions=0x%08x",
editorInfo.inputType, editorInfo.imeOptions));
Log.d(TAG, "All caps = "
+ ((editorInfo.inputType & InputType.TYPE_TEXT_FLAG_CAP_CHARACTERS) != 0)
+ ", sentence caps = "
+ ((editorInfo.inputType & InputType.TYPE_TEXT_FLAG_CAP_SENTENCES) != 0)
+ ", word caps = "
+ ((editorInfo.inputType & InputType.TYPE_TEXT_FLAG_CAP_WORDS) != 0));
}
if (ProductionFlag.IS_EXPERIMENTAL) {
ResearchLogger.latinIME_onStartInputViewInternal(editorInfo, mPrefs);
}
if (InputAttributes.inPrivateImeOptions(null, NO_MICROPHONE_COMPAT, editorInfo)) {
Log.w(TAG, "Deprecated private IME option specified: "
+ editorInfo.privateImeOptions);
Log.w(TAG, "Use " + getPackageName() + "." + NO_MICROPHONE + " instead");
}
if (InputAttributes.inPrivateImeOptions(getPackageName(), FORCE_ASCII, editorInfo)) {
Log.w(TAG, "Deprecated private IME option specified: "
+ editorInfo.privateImeOptions);
Log.w(TAG, "Use EditorInfo.IME_FLAG_FORCE_ASCII flag instead");
}
mTargetApplicationInfo =
TargetApplicationGetter.getCachedApplicationInfo(editorInfo.packageName);
if (null == mTargetApplicationInfo) {
new TargetApplicationGetter(this /* context */, this /* listener */)
.execute(editorInfo.packageName);
}
LatinImeLogger.onStartInputView(editorInfo);
// In landscape mode, this method gets called without the input view being created.
if (inputView == null) {
return;
}
// Forward this event to the accessibility utilities, if enabled.
final AccessibilityUtils accessUtils = AccessibilityUtils.getInstance();
if (accessUtils.isTouchExplorationEnabled()) {
accessUtils.onStartInputViewInternal(editorInfo, restarting);
}
if (!restarting) {
mSubtypeSwitcher.updateParametersOnStartInputView();
}
// The EditorInfo might have a flag that affects fullscreen mode.
// Note: This call should be done by InputMethodService?
updateFullscreenMode();
mApplicationSpecifiedCompletions = null;
final boolean selectionChanged = mLastSelectionStart != editorInfo.initialSelStart
|| mLastSelectionEnd != editorInfo.initialSelEnd;
if (!restarting || selectionChanged) {
// If the selection changed, we reset the input state. Essentially, we come here with
// restarting == true when the app called setText() or similar. We should reset the
// state if the app set the text to something else, but keep it if it set a suggestion
// or something.
mEnteredText = null;
resetComposingState(true /* alsoResetLastComposedWord */);
mDeleteCount = 0;
mSpaceState = SPACE_STATE_NONE;
if (mSuggestionStripView != null) {
mSuggestionStripView.clear();
}
}
if (!restarting) {
inputView.closing();
loadSettings();
if (mSuggest != null && mCurrentSettings.mCorrectionEnabled) {
mSuggest.setAutoCorrectionThreshold(mCurrentSettings.mAutoCorrectionThreshold);
}
switcher.loadKeyboard(editorInfo, mCurrentSettings);
updateKeyboardViewGestureHandlingModeByMainDictionaryAvailability();
}
setSuggestionStripShownInternal(
isSuggestionsStripVisible(), /* needsInputViewShown */ false);
mLastSelectionStart = editorInfo.initialSelStart;
mLastSelectionEnd = editorInfo.initialSelEnd;
// If we come here something in the text state is very likely to have changed.
// We should update the shift state regardless of whether we are restarting or not, because
// this is not perceived as a layout change that may be disruptive like we may have with
// switcher.loadKeyboard; in apps like Talk, we come here when the text is sent and the
// field gets emptied and we need to re-evaluate the shift state, but not the whole layout
// which would be disruptive.
mKeyboardSwitcher.updateShiftState();
mHandler.cancelUpdateSuggestionStrip();
mHandler.cancelDoubleSpacesTimer();
inputView.setKeyPreviewPopupEnabled(mCurrentSettings.mKeyPreviewPopupOn,
mCurrentSettings.mKeyPreviewPopupDismissDelay);
if (TRACE) Debug.startMethodTracing("/data/trace/latinime");
}
// Callback for the TargetApplicationGetter
@Override
public void onTargetApplicationKnown(final ApplicationInfo info) {
mTargetApplicationInfo = info;
}
@Override
public void onWindowHidden() {
if (ProductionFlag.IS_EXPERIMENTAL) {
ResearchLogger.latinIME_onWindowHidden(mLastSelectionStart, mLastSelectionEnd,
getCurrentInputConnection());
}
super.onWindowHidden();
KeyboardView inputView = mKeyboardSwitcher.getKeyboardView();
if (inputView != null) inputView.closing();
}
private void onFinishInputInternal() {
super.onFinishInput();
LatinImeLogger.commit();
if (ProductionFlag.IS_EXPERIMENTAL) {
ResearchLogger.getInstance().latinIME_onFinishInputInternal();
}
KeyboardView inputView = mKeyboardSwitcher.getKeyboardView();
if (inputView != null) inputView.closing();
}
private void onFinishInputViewInternal(boolean finishingInput) {
super.onFinishInputView(finishingInput);
mKeyboardSwitcher.onFinishInputView();
KeyboardView inputView = mKeyboardSwitcher.getKeyboardView();
if (inputView != null) inputView.cancelAllMessages();
// Remove pending messages related to update suggestions
mHandler.cancelUpdateSuggestionStrip();
}
@Override
public void onUpdateSelection(int oldSelStart, int oldSelEnd,
int newSelStart, int newSelEnd,
int composingSpanStart, int composingSpanEnd) {
super.onUpdateSelection(oldSelStart, oldSelEnd, newSelStart, newSelEnd,
composingSpanStart, composingSpanEnd);
if (DEBUG) {
Log.i(TAG, "onUpdateSelection: oss=" + oldSelStart
+ ", ose=" + oldSelEnd
+ ", lss=" + mLastSelectionStart
+ ", lse=" + mLastSelectionEnd
+ ", nss=" + newSelStart
+ ", nse=" + newSelEnd
+ ", cs=" + composingSpanStart
+ ", ce=" + composingSpanEnd);
}
if (ProductionFlag.IS_EXPERIMENTAL) {
final boolean expectingUpdateSelectionFromLogger =
ResearchLogger.getAndClearLatinIMEExpectingUpdateSelection();
ResearchLogger.latinIME_onUpdateSelection(mLastSelectionStart, mLastSelectionEnd,
oldSelStart, oldSelEnd, newSelStart, newSelEnd, composingSpanStart,
composingSpanEnd, mExpectingUpdateSelection,
expectingUpdateSelectionFromLogger, mConnection);
if (expectingUpdateSelectionFromLogger) {
// TODO: Investigate. Quitting now sounds wrong - we won't do the resetting work
return;
}
}
// TODO: refactor the following code to be less contrived.
// "newSelStart != composingSpanEnd" || "newSelEnd != composingSpanEnd" means
// that the cursor is not at the end of the composing span, or there is a selection.
// "mLastSelectionStart != newSelStart" means that the cursor is not in the same place
// as last time we were called (if there is a selection, it means the start hasn't
// changed, so it's the end that did).
final boolean selectionChanged = (newSelStart != composingSpanEnd
|| newSelEnd != composingSpanEnd) && mLastSelectionStart != newSelStart;
// if composingSpanStart and composingSpanEnd are -1, it means there is no composing
// span in the view - we can use that to narrow down whether the cursor was moved
// by us or not. If we are composing a word but there is no composing span, then
// we know for sure the cursor moved while we were composing and we should reset
// the state.
final boolean noComposingSpan = composingSpanStart == -1 && composingSpanEnd == -1;
if (!mExpectingUpdateSelection) {
// TAKE CARE: there is a race condition when we enter this test even when the user
// did not explicitly move the cursor. This happens when typing fast, where two keys
// turn this flag on in succession and both onUpdateSelection() calls arrive after
// the second one - the first call successfully avoids this test, but the second one
// enters. For the moment we rely on noComposingSpan to further reduce the impact.
// TODO: the following is probably better done in resetEntireInputState().
// it should only happen when the cursor moved, and the very purpose of the
// test below is to narrow down whether this happened or not. Likewise with
// the call to postUpdateShiftState.
// We set this to NONE because after a cursor move, we don't want the space
// state-related special processing to kick in.
mSpaceState = SPACE_STATE_NONE;
if ((!mWordComposer.isComposingWord()) || selectionChanged || noComposingSpan) {
resetEntireInputState();
}
mHandler.postUpdateShiftState();
}
mExpectingUpdateSelection = false;
// TODO: Decide to call restartSuggestionsOnWordBeforeCursorIfAtEndOfWord() or not
// here. It would probably be too expensive to call directly here but we may want to post a
// message to delay it. The point would be to unify behavior between backspace to the
// end of a word and manually put the pointer at the end of the word.
// Make a note of the cursor position
mLastSelectionStart = newSelStart;
mLastSelectionEnd = newSelEnd;
}
/**
* This is called when the user has clicked on the extracted text view,
* when running in fullscreen mode. The default implementation hides
* the suggestions view when this happens, but only if the extracted text
* editor has a vertical scroll bar because its text doesn't fit.
* Here we override the behavior due to the possibility that a re-correction could
* cause the suggestions strip to disappear and re-appear.
*/
@Override
public void onExtractedTextClicked() {
if (mCurrentSettings.isSuggestionsRequested(mDisplayOrientation)) return;
super.onExtractedTextClicked();
}
/**
* This is called when the user has performed a cursor movement in the
* extracted text view, when it is running in fullscreen mode. The default
* implementation hides the suggestions view when a vertical movement
* happens, but only if the extracted text editor has a vertical scroll bar
* because its text doesn't fit.
* Here we override the behavior due to the possibility that a re-correction could
* cause the suggestions strip to disappear and re-appear.
*/
@Override
public void onExtractedCursorMovement(int dx, int dy) {
if (mCurrentSettings.isSuggestionsRequested(mDisplayOrientation)) return;
super.onExtractedCursorMovement(dx, dy);
}
@Override
public void hideWindow() {
LatinImeLogger.commit();
mKeyboardSwitcher.onHideWindow();
if (TRACE) Debug.stopMethodTracing();
if (mOptionsDialog != null && mOptionsDialog.isShowing()) {
mOptionsDialog.dismiss();
mOptionsDialog = null;
}
super.hideWindow();
}
@Override
public void onDisplayCompletions(CompletionInfo[] applicationSpecifiedCompletions) {
if (DEBUG) {
Log.i(TAG, "Received completions:");
if (applicationSpecifiedCompletions != null) {
for (int i = 0; i < applicationSpecifiedCompletions.length; i++) {
Log.i(TAG, " #" + i + ": " + applicationSpecifiedCompletions[i]);
}
}
}
if (ProductionFlag.IS_EXPERIMENTAL) {
ResearchLogger.latinIME_onDisplayCompletions(applicationSpecifiedCompletions);
}
if (!mCurrentSettings.isApplicationSpecifiedCompletionsOn()) return;
mApplicationSpecifiedCompletions = applicationSpecifiedCompletions;
if (applicationSpecifiedCompletions == null) {
clearSuggestionStrip();
return;
}
final ArrayList<SuggestedWords.SuggestedWordInfo> applicationSuggestedWords =
SuggestedWords.getFromApplicationSpecifiedCompletions(
applicationSpecifiedCompletions);
final SuggestedWords suggestedWords = new SuggestedWords(
applicationSuggestedWords,
false /* typedWordValid */,
false /* hasAutoCorrectionCandidate */,
false /* isPunctuationSuggestions */,
false /* isObsoleteSuggestions */,
false /* isPrediction */);
// When in fullscreen mode, show completions generated by the application
final boolean isAutoCorrection = false;
setSuggestionStrip(suggestedWords, isAutoCorrection);
setAutoCorrectionIndicator(isAutoCorrection);
// TODO: is this the right thing to do? What should we auto-correct to in
// this case? This says to keep whatever the user typed.
mWordComposer.setAutoCorrection(mWordComposer.getTypedWord());
setSuggestionStripShown(true);
}
private void setSuggestionStripShownInternal(boolean shown, boolean needsInputViewShown) {
// TODO: Modify this if we support suggestions with hard keyboard
if (onEvaluateInputViewShown() && mSuggestionsContainer != null) {
final MainKeyboardView keyboardView = mKeyboardSwitcher.getKeyboardView();
final boolean inputViewShown = (keyboardView != null) ? keyboardView.isShown() : false;
final boolean shouldShowSuggestions = shown
&& (needsInputViewShown ? inputViewShown : true);
if (isFullscreenMode()) {
mSuggestionsContainer.setVisibility(
shouldShowSuggestions ? View.VISIBLE : View.GONE);
} else {
mSuggestionsContainer.setVisibility(
shouldShowSuggestions ? View.VISIBLE : View.INVISIBLE);
}
}
}
private void setSuggestionStripShown(boolean shown) {
setSuggestionStripShownInternal(shown, /* needsInputViewShown */true);
}
private int getAdjustedBackingViewHeight() {
final int currentHeight = mKeyPreviewBackingView.getHeight();
if (currentHeight > 0) {
return currentHeight;
}
final KeyboardView keyboardView = mKeyboardSwitcher.getKeyboardView();
if (keyboardView == null) {
return 0;
}
final int keyboardHeight = keyboardView.getHeight();
final int suggestionsHeight = mSuggestionsContainer.getHeight();
final int displayHeight = mResources.getDisplayMetrics().heightPixels;
final Rect rect = new Rect();
mKeyPreviewBackingView.getWindowVisibleDisplayFrame(rect);
final int notificationBarHeight = rect.top;
final int remainingHeight = displayHeight - notificationBarHeight - suggestionsHeight
- keyboardHeight;
final LayoutParams params = mKeyPreviewBackingView.getLayoutParams();
params.height = mSuggestionStripView.setMoreSuggestionsHeight(remainingHeight);
mKeyPreviewBackingView.setLayoutParams(params);
return params.height;
}
@Override
public void onComputeInsets(InputMethodService.Insets outInsets) {
super.onComputeInsets(outInsets);
final KeyboardView inputView = mKeyboardSwitcher.getKeyboardView();
if (inputView == null || mSuggestionsContainer == null)
return;
final int adjustedBackingHeight = getAdjustedBackingViewHeight();
final boolean backingGone = (mKeyPreviewBackingView.getVisibility() == View.GONE);
final int backingHeight = backingGone ? 0 : adjustedBackingHeight;
// In fullscreen mode, the height of the extract area managed by InputMethodService should
// be considered.
// See {@link android.inputmethodservice.InputMethodService#onComputeInsets}.
final int extractHeight = isFullscreenMode() ? mExtractArea.getHeight() : 0;
final int suggestionsHeight = (mSuggestionsContainer.getVisibility() == View.GONE) ? 0
: mSuggestionsContainer.getHeight();
final int extraHeight = extractHeight + backingHeight + suggestionsHeight;
int touchY = extraHeight;
// Need to set touchable region only if input view is being shown
final MainKeyboardView keyboardView = mKeyboardSwitcher.getKeyboardView();
if (keyboardView != null && keyboardView.isShown()) {
if (mSuggestionsContainer.getVisibility() == View.VISIBLE) {
touchY -= suggestionsHeight;
}
final int touchWidth = inputView.getWidth();
final int touchHeight = inputView.getHeight() + extraHeight
// Extend touchable region below the keyboard.
+ EXTENDED_TOUCHABLE_REGION_HEIGHT;
outInsets.touchableInsets = InputMethodService.Insets.TOUCHABLE_INSETS_REGION;
outInsets.touchableRegion.set(0, touchY, touchWidth, touchHeight);
}
outInsets.contentTopInsets = touchY;
outInsets.visibleTopInsets = touchY;
}
@Override
public boolean onEvaluateFullscreenMode() {
// Reread resource value here, because this method is called by framework anytime as needed.
final boolean isFullscreenModeAllowed =
mCurrentSettings.isFullscreenModeAllowed(getResources());
return super.onEvaluateFullscreenMode() && isFullscreenModeAllowed;
}
@Override
public void updateFullscreenMode() {
super.updateFullscreenMode();
if (mKeyPreviewBackingView == null) return;
// In fullscreen mode, no need to have extra space to show the key preview.
// If not, we should have extra space above the keyboard to show the key preview.
mKeyPreviewBackingView.setVisibility(isFullscreenMode() ? View.GONE : View.VISIBLE);
}
// This will reset the whole input state to the starting state. It will clear
// the composing word, reset the last composed word, tell the inputconnection about it.
private void resetEntireInputState() {
resetComposingState(true /* alsoResetLastComposedWord */);
clearSuggestionStrip();
mConnection.finishComposingText();
}
private void resetComposingState(final boolean alsoResetLastComposedWord) {
mWordComposer.reset();
if (alsoResetLastComposedWord)
mLastComposedWord = LastComposedWord.NOT_A_COMPOSED_WORD;
}
private void commitTyped(final int separatorCode) {
if (!mWordComposer.isComposingWord()) return;
final CharSequence typedWord = mWordComposer.getTypedWord();
if (typedWord.length() > 0) {
mConnection.commitText(typedWord, 1);
if (ProductionFlag.IS_EXPERIMENTAL) {
ResearchLogger.latinIME_commitText(typedWord);
}
final CharSequence prevWord = addToUserHistoryDictionary(typedWord);
mLastComposedWord = mWordComposer.commitWord(
LastComposedWord.COMMIT_TYPE_USER_TYPED_WORD, typedWord.toString(),
separatorCode, prevWord);
}
updateSuggestionStrip();
}
// Called from the KeyboardSwitcher which needs to know auto caps state to display
// the right layout.
public int getCurrentAutoCapsState() {
if (!mCurrentSettings.mAutoCap) return Constants.TextUtils.CAP_MODE_OFF;
final EditorInfo ei = getCurrentInputEditorInfo();
if (ei == null) return Constants.TextUtils.CAP_MODE_OFF;
final int inputType = ei.inputType;
if ((inputType & InputType.TYPE_TEXT_FLAG_CAP_CHARACTERS) != 0) {
return TextUtils.CAP_MODE_CHARACTERS;
}
final boolean noNeedToCheckCapsMode = (inputType & (InputType.TYPE_TEXT_FLAG_CAP_SENTENCES
| InputType.TYPE_TEXT_FLAG_CAP_WORDS)) == 0;
if (noNeedToCheckCapsMode) return Constants.TextUtils.CAP_MODE_OFF;
// Avoid making heavy round-trip IPC calls of {@link InputConnection#getCursorCapsMode}
// unless needed.
if (mWordComposer.isComposingWord()) return Constants.TextUtils.CAP_MODE_OFF;
// TODO: This blocking IPC call is heavy. Consider doing this without using IPC calls.
// Note: getCursorCapsMode() returns the current capitalization mode that is any
// combination of CAP_MODE_CHARACTERS, CAP_MODE_WORDS, and CAP_MODE_SENTENCES. 0 means none
// of them.
return mConnection.getCursorCapsMode(inputType);
}
private void swapSwapperAndSpace() {
CharSequence lastTwo = mConnection.getTextBeforeCursor(2, 0);
// It is guaranteed lastTwo.charAt(1) is a swapper - else this method is not called.
if (lastTwo != null && lastTwo.length() == 2
&& lastTwo.charAt(0) == Keyboard.CODE_SPACE) {
mConnection.deleteSurroundingText(2, 0);
if (ProductionFlag.IS_EXPERIMENTAL) {
ResearchLogger.latinIME_deleteSurroundingText(2);
}
mConnection.commitText(lastTwo.charAt(1) + " ", 1);
if (ProductionFlag.IS_EXPERIMENTAL) {
ResearchLogger.latinIME_swapSwapperAndSpaceWhileInBatchEdit();
}
mKeyboardSwitcher.updateShiftState();
}
}
private boolean maybeDoubleSpace() {
if (!mCurrentSettings.mCorrectionEnabled) return false;
if (!mHandler.isAcceptingDoubleSpaces()) return false;
final CharSequence lastThree = mConnection.getTextBeforeCursor(3, 0);
if (lastThree != null && lastThree.length() == 3
&& canBeFollowedByPeriod(lastThree.charAt(0))
&& lastThree.charAt(1) == Keyboard.CODE_SPACE
&& lastThree.charAt(2) == Keyboard.CODE_SPACE) {
mHandler.cancelDoubleSpacesTimer();
mConnection.deleteSurroundingText(2, 0);
mConnection.commitText(". ", 1);
if (ProductionFlag.IS_EXPERIMENTAL) {
ResearchLogger.latinIME_doubleSpaceAutoPeriod();
}
mKeyboardSwitcher.updateShiftState();
return true;
}
return false;
}
private static boolean canBeFollowedByPeriod(final int codePoint) {
// TODO: Check again whether there really ain't a better way to check this.
// TODO: This should probably be language-dependant...
return Character.isLetterOrDigit(codePoint)
|| codePoint == Keyboard.CODE_SINGLE_QUOTE
|| codePoint == Keyboard.CODE_DOUBLE_QUOTE
|| codePoint == Keyboard.CODE_CLOSING_PARENTHESIS
|| codePoint == Keyboard.CODE_CLOSING_SQUARE_BRACKET
|| codePoint == Keyboard.CODE_CLOSING_CURLY_BRACKET
|| codePoint == Keyboard.CODE_CLOSING_ANGLE_BRACKET;
}
// Callback for the {@link SuggestionStripView}, to call when the "add to dictionary" hint is
// pressed.
@Override
public boolean addWordToUserDictionary(String word) {
mUserDictionary.addWordToUserDictionary(word, 128);
return true;
}
private static boolean isAlphabet(int code) {
return Character.isLetter(code);
}
private void onSettingsKeyPressed() {
if (isShowingOptionDialog()) return;
showSubtypeSelectorAndSettings();
}
// Virtual codes representing custom requests. These are used in onCustomRequest() below.
public static final int CODE_SHOW_INPUT_METHOD_PICKER = 1;
@Override
public boolean onCustomRequest(int requestCode) {
if (isShowingOptionDialog()) return false;
switch (requestCode) {
case CODE_SHOW_INPUT_METHOD_PICKER:
if (ImfUtils.hasMultipleEnabledIMEsOrSubtypes(
this, true /* include aux subtypes */)) {
mImm.showInputMethodPicker();
return true;
}
return false;
}
return false;
}
private boolean isShowingOptionDialog() {
return mOptionsDialog != null && mOptionsDialog.isShowing();
}
private static int getActionId(Keyboard keyboard) {
return keyboard != null ? keyboard.mId.imeActionId() : EditorInfo.IME_ACTION_NONE;
}
private void performEditorAction(int actionId) {
mConnection.performEditorAction(actionId);
if (ProductionFlag.IS_EXPERIMENTAL) {
ResearchLogger.latinIME_performEditorAction(actionId);
}
}
private void handleLanguageSwitchKey() {
final boolean includesOtherImes = mCurrentSettings.mIncludesOtherImesInLanguageSwitchList;
final IBinder token = getWindow().getWindow().getAttributes().token;
if (mShouldSwitchToLastSubtype) {
final InputMethodSubtype lastSubtype = mImm.getLastInputMethodSubtype();
final boolean lastSubtypeBelongsToThisIme =
ImfUtils.checkIfSubtypeBelongsToThisImeAndEnabled(this, lastSubtype);
if ((includesOtherImes || lastSubtypeBelongsToThisIme)
&& mImm.switchToLastInputMethod(token)) {
mShouldSwitchToLastSubtype = false;
} else {
mImm.switchToNextInputMethod(token, !includesOtherImes);
mShouldSwitchToLastSubtype = true;
}
} else {
mImm.switchToNextInputMethod(token, !includesOtherImes);
}
}
private void sendUpDownEnterOrBackspace(final int code) {
final long eventTime = SystemClock.uptimeMillis();
mConnection.sendKeyEvent(new KeyEvent(eventTime, eventTime,
KeyEvent.ACTION_DOWN, code, 0, 0, KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE));
mConnection.sendKeyEvent(new KeyEvent(SystemClock.uptimeMillis(), eventTime,
KeyEvent.ACTION_UP, code, 0, 0, KeyCharacterMap.VIRTUAL_KEYBOARD, 0,
KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE));
}
private void sendKeyCodePoint(int code) {
// TODO: Remove this special handling of digit letters.
// For backward compatibility. See {@link InputMethodService#sendKeyChar(char)}.
if (code >= '0' && code <= '9') {
super.sendKeyChar((char)code);
return;
}
// 16 is android.os.Build.VERSION_CODES.JELLY_BEAN but we can't write it because
// we want to be able to compile against the Ice Cream Sandwich SDK.
if (Keyboard.CODE_ENTER == code && mTargetApplicationInfo != null
&& mTargetApplicationInfo.targetSdkVersion < 16) {
// Backward compatibility mode. Before Jelly bean, the keyboard would simulate
// a hardware keyboard event on pressing enter or delete. This is bad for many
// reasons (there are race conditions with commits) but some applications are
// relying on this behavior so we continue to support it for older apps.
sendUpDownEnterOrBackspace(KeyEvent.KEYCODE_ENTER);
} else {
final String text = new String(new int[] { code }, 0, 1);
mConnection.commitText(text, text.length());
}
if (ProductionFlag.IS_EXPERIMENTAL) {
ResearchLogger.latinIME_sendKeyCodePoint(code);
}
}
// Implementation of {@link KeyboardActionListener}.
@Override
public void onCodeInput(int primaryCode, int x, int y) {
final long when = SystemClock.uptimeMillis();
if (primaryCode != Keyboard.CODE_DELETE || when > mLastKeyTime + QUICK_PRESS) {
mDeleteCount = 0;
}
mLastKeyTime = when;
mConnection.beginBatchEdit();
if (ProductionFlag.IS_EXPERIMENTAL) {
ResearchLogger.latinIME_onCodeInput(primaryCode, x, y);
}
final KeyboardSwitcher switcher = mKeyboardSwitcher;
// The space state depends only on the last character pressed and its own previous
// state. Here, we revert the space state to neutral if the key is actually modifying
// the input contents (any non-shift key), which is what we should do for
// all inputs that do not result in a special state. Each character handling is then
// free to override the state as they see fit.
final int spaceState = mSpaceState;
if (!mWordComposer.isComposingWord()) mIsAutoCorrectionIndicatorOn = false;
// TODO: Consolidate the double space timer, mLastKeyTime, and the space state.
if (primaryCode != Keyboard.CODE_SPACE) {
mHandler.cancelDoubleSpacesTimer();
}
boolean didAutoCorrect = false;
switch (primaryCode) {
case Keyboard.CODE_DELETE:
mSpaceState = SPACE_STATE_NONE;
handleBackspace(spaceState);
mDeleteCount++;
mExpectingUpdateSelection = true;
mShouldSwitchToLastSubtype = true;
LatinImeLogger.logOnDelete(x, y);
break;
case Keyboard.CODE_SHIFT:
case Keyboard.CODE_SWITCH_ALPHA_SYMBOL:
// Shift and symbol key is handled in onPressKey() and onReleaseKey().
break;
case Keyboard.CODE_SETTINGS:
onSettingsKeyPressed();
break;
case Keyboard.CODE_SHORTCUT:
mSubtypeSwitcher.switchToShortcutIME();
break;
case Keyboard.CODE_ACTION_ENTER:
performEditorAction(getActionId(switcher.getKeyboard()));
break;
case Keyboard.CODE_ACTION_NEXT:
performEditorAction(EditorInfo.IME_ACTION_NEXT);
break;
case Keyboard.CODE_ACTION_PREVIOUS:
performEditorAction(EditorInfo.IME_ACTION_PREVIOUS);
break;
case Keyboard.CODE_LANGUAGE_SWITCH:
handleLanguageSwitchKey();
break;
case Keyboard.CODE_RESEARCH:
if (ProductionFlag.IS_EXPERIMENTAL) {
ResearchLogger.getInstance().presentResearchDialog(this);
}
break;
default:
mSpaceState = SPACE_STATE_NONE;
if (mCurrentSettings.isWordSeparator(primaryCode)) {
didAutoCorrect = handleSeparator(primaryCode, x, y, spaceState);
} else {
if (SPACE_STATE_PHANTOM == spaceState) {
commitTyped(LastComposedWord.NOT_A_SEPARATOR);
}
final int keyX, keyY;
final Keyboard keyboard = mKeyboardSwitcher.getKeyboard();
if (keyboard != null && keyboard.hasProximityCharsCorrection(primaryCode)) {
keyX = x;
keyY = y;
} else {
keyX = NOT_A_TOUCH_COORDINATE;
keyY = NOT_A_TOUCH_COORDINATE;
}
handleCharacter(primaryCode, keyX, keyY, spaceState);
}
mExpectingUpdateSelection = true;
mShouldSwitchToLastSubtype = true;
break;
}
switcher.onCodeInput(primaryCode);
// Reset after any single keystroke, except shift and symbol-shift
if (!didAutoCorrect && primaryCode != Keyboard.CODE_SHIFT
&& primaryCode != Keyboard.CODE_SWITCH_ALPHA_SYMBOL)
mLastComposedWord.deactivate();
mEnteredText = null;
mConnection.endBatchEdit();
}
// Called from PointerTracker through the KeyboardActionListener interface
@Override
public void onTextInput(CharSequence text) {
mConnection.beginBatchEdit();
commitTyped(LastComposedWord.NOT_A_SEPARATOR);
text = specificTldProcessingOnTextInput(text);
if (SPACE_STATE_PHANTOM == mSpaceState) {
sendKeyCodePoint(Keyboard.CODE_SPACE);
}
mConnection.commitText(text, 1);
if (ProductionFlag.IS_EXPERIMENTAL) {
ResearchLogger.latinIME_commitText(text);
}
mConnection.endBatchEdit();
mKeyboardSwitcher.updateShiftState();
mKeyboardSwitcher.onCodeInput(Keyboard.CODE_OUTPUT_TEXT);
mSpaceState = SPACE_STATE_NONE;
mEnteredText = text;
resetComposingState(true /* alsoResetLastComposedWord */);
}
@Override
public void onStartBatchInput() {
mConnection.beginBatchEdit();
if (mWordComposer.isComposingWord()) {
commitTyped(LastComposedWord.NOT_A_SEPARATOR);
mExpectingUpdateSelection = true;
// TODO: Can we remove this?
mSpaceState = SPACE_STATE_PHANTOM;
}
mConnection.endBatchEdit();
// TODO: Should handle TextUtils.CAP_MODE_CHARACTER.
mWordComposer.setAutoCapitalized(
getCurrentAutoCapsState() != Constants.TextUtils.CAP_MODE_OFF);
}
@Override
public void onUpdateBatchInput(InputPointers batchPointers) {
mWordComposer.setBatchInputPointers(batchPointers);
final SuggestedWords suggestedWords = getSuggestedWords();
showSuggestionStrip(suggestedWords, null);
final String gestureFloatingPreviewText = (suggestedWords.size() > 0)
? suggestedWords.getWord(0) : null;
mKeyboardSwitcher.getKeyboardView()
.showGestureFloatingPreviewText(gestureFloatingPreviewText);
}
@Override
public void onEndBatchInput(InputPointers batchPointers) {
mWordComposer.setBatchInputPointers(batchPointers);
final SuggestedWords suggestedWords = getSuggestedWords();
showSuggestionStrip(suggestedWords, null);
mKeyboardSwitcher.getKeyboardView().showGestureFloatingPreviewText(null);
if (suggestedWords == null || suggestedWords.size() == 0) {
return;
}
final CharSequence text = suggestedWords.getWord(0);
if (TextUtils.isEmpty(text)) {
return;
}
mWordComposer.setBatchInputWord(text);
mConnection.beginBatchEdit();
if (SPACE_STATE_PHANTOM == mSpaceState) {
sendKeyCodePoint(Keyboard.CODE_SPACE);
}
mConnection.setComposingText(text, 1);
mExpectingUpdateSelection = true;
mConnection.endBatchEdit();
mKeyboardSwitcher.updateShiftState();
mSpaceState = SPACE_STATE_PHANTOM;
}
private CharSequence specificTldProcessingOnTextInput(final CharSequence text) {
if (text.length() <= 1 || text.charAt(0) != Keyboard.CODE_PERIOD
|| !Character.isLetter(text.charAt(1))) {
// Not a tld: do nothing.
return text;
}
// We have a TLD (or something that looks like this): make sure we don't add
// a space even if currently in phantom mode.
mSpaceState = SPACE_STATE_NONE;
final CharSequence lastOne = mConnection.getTextBeforeCursor(1, 0);
if (lastOne != null && lastOne.length() == 1
&& lastOne.charAt(0) == Keyboard.CODE_PERIOD) {
return text.subSequence(1, text.length());
} else {
return text;
}
}
// Called from PointerTracker through the KeyboardActionListener interface
@Override
public void onCancelInput() {
// User released a finger outside any key
mKeyboardSwitcher.onCancelInput();
}
private void handleBackspace(final int spaceState) {
// In many cases, we may have to put the keyboard in auto-shift state again.
mHandler.postUpdateShiftState();
if (mEnteredText != null && mConnection.sameAsTextBeforeCursor(mEnteredText)) {
// Cancel multi-character input: remove the text we just entered.
// This is triggered on backspace after a key that inputs multiple characters,
// like the smiley key or the .com key.
final int length = mEnteredText.length();
mConnection.deleteSurroundingText(length, 0);
if (ProductionFlag.IS_EXPERIMENTAL) {
ResearchLogger.latinIME_deleteSurroundingText(length);
}
// If we have mEnteredText, then we know that mHasUncommittedTypedChars == false.
// In addition we know that spaceState is false, and that we should not be
// reverting any autocorrect at this point. So we can safely return.
return;
}
if (mWordComposer.isComposingWord()) {
final int length = mWordComposer.size();
if (length > 0) {
// Immediately after a batch input.
if (SPACE_STATE_PHANTOM == spaceState) {
mWordComposer.reset();
} else {
mWordComposer.deleteLast();
}
mConnection.setComposingText(getTextWithUnderline(mWordComposer.getTypedWord()), 1);
mHandler.postUpdateSuggestionStrip();
} else {
mConnection.deleteSurroundingText(1, 0);
if (ProductionFlag.IS_EXPERIMENTAL) {
ResearchLogger.latinIME_deleteSurroundingText(1);
}
}
} else {
if (mLastComposedWord.canRevertCommit()) {
Utils.Stats.onAutoCorrectionCancellation();
revertCommit();
return;
}
if (SPACE_STATE_DOUBLE == spaceState) {
mHandler.cancelDoubleSpacesTimer();
if (mConnection.revertDoubleSpace()) {
// No need to reset mSpaceState, it has already be done (that's why we
// receive it as a parameter)
return;
}
} else if (SPACE_STATE_SWAP_PUNCTUATION == spaceState) {
if (mConnection.revertSwapPunctuation()) {
// Likewise
return;
}
}
// No cancelling of commit/double space/swap: we have a regular backspace.
// We should backspace one char and restart suggestion if at the end of a word.
if (mLastSelectionStart != mLastSelectionEnd) {
// If there is a selection, remove it.
final int lengthToDelete = mLastSelectionEnd - mLastSelectionStart;
mConnection.setSelection(mLastSelectionEnd, mLastSelectionEnd);
mConnection.deleteSurroundingText(lengthToDelete, 0);
if (ProductionFlag.IS_EXPERIMENTAL) {
ResearchLogger.latinIME_deleteSurroundingText(lengthToDelete);
}
} else {
// There is no selection, just delete one character.
if (NOT_A_CURSOR_POSITION == mLastSelectionEnd) {
// This should never happen.
Log.e(TAG, "Backspace when we don't know the selection position");
}
// 16 is android.os.Build.VERSION_CODES.JELLY_BEAN but we can't write it because
// we want to be able to compile against the Ice Cream Sandwich SDK.
if (mTargetApplicationInfo != null
&& mTargetApplicationInfo.targetSdkVersion < 16) {
// Backward compatibility mode. Before Jelly bean, the keyboard would simulate
// a hardware keyboard event on pressing enter or delete. This is bad for many
// reasons (there are race conditions with commits) but some applications are
// relying on this behavior so we continue to support it for older apps.
sendUpDownEnterOrBackspace(KeyEvent.KEYCODE_DEL);
} else {
mConnection.deleteSurroundingText(1, 0);
}
if (ProductionFlag.IS_EXPERIMENTAL) {
ResearchLogger.latinIME_deleteSurroundingText(1);
}
if (mDeleteCount > DELETE_ACCELERATE_AT) {
mConnection.deleteSurroundingText(1, 0);
if (ProductionFlag.IS_EXPERIMENTAL) {
ResearchLogger.latinIME_deleteSurroundingText(1);
}
}
}
if (mCurrentSettings.isSuggestionsRequested(mDisplayOrientation)) {
restartSuggestionsOnWordBeforeCursorIfAtEndOfWord();
}
}
}
private boolean maybeStripSpace(final int code,
final int spaceState, final boolean isFromSuggestionStrip) {
if (Keyboard.CODE_ENTER == code && SPACE_STATE_SWAP_PUNCTUATION == spaceState) {
mConnection.removeTrailingSpace();
return false;
} else if ((SPACE_STATE_WEAK == spaceState
|| SPACE_STATE_SWAP_PUNCTUATION == spaceState)
&& isFromSuggestionStrip) {
if (mCurrentSettings.isWeakSpaceSwapper(code)) {
return true;
} else {
if (mCurrentSettings.isWeakSpaceStripper(code)) {
mConnection.removeTrailingSpace();
}
return false;
}
} else {
return false;
}
}
private void handleCharacter(final int primaryCode, final int x,
final int y, final int spaceState) {
boolean isComposingWord = mWordComposer.isComposingWord();
if (SPACE_STATE_PHANTOM == spaceState &&
!mCurrentSettings.isSymbolExcludedFromWordSeparators(primaryCode)) {
if (isComposingWord) {
// Sanity check
throw new RuntimeException("Should not be composing here");
}
sendKeyCodePoint(Keyboard.CODE_SPACE);
}
// NOTE: isCursorTouchingWord() is a blocking IPC call, so it often takes several
// dozen milliseconds. Avoid calling it as much as possible, since we are on the UI
// thread here.
if (!isComposingWord && (isAlphabet(primaryCode)
|| mCurrentSettings.isSymbolExcludedFromWordSeparators(primaryCode))
&& mCurrentSettings.isSuggestionsRequested(mDisplayOrientation) &&
!mConnection.isCursorTouchingWord(mCurrentSettings)) {
// Reset entirely the composing state anyway, then start composing a new word unless
// the character is a single quote. The idea here is, single quote is not a
// separator and it should be treated as a normal character, except in the first
// position where it should not start composing a word.
isComposingWord = (Keyboard.CODE_SINGLE_QUOTE != primaryCode);
// Here we don't need to reset the last composed word. It will be reset
// when we commit this one, if we ever do; if on the other hand we backspace
// it entirely and resume suggestions on the previous word, we'd like to still
// have touch coordinates for it.
resetComposingState(false /* alsoResetLastComposedWord */);
}
if (isComposingWord) {
final int keyX, keyY;
if (KeyboardActionListener.Adapter.isInvalidCoordinate(x)
|| KeyboardActionListener.Adapter.isInvalidCoordinate(y)) {
keyX = x;
keyY = y;
} else {
final KeyDetector keyDetector =
mKeyboardSwitcher.getKeyboardView().getKeyDetector();
keyX = keyDetector.getTouchX(x);
keyY = keyDetector.getTouchY(y);
}
mWordComposer.add(primaryCode, keyX, keyY);
// If it's the first letter, make note of auto-caps state
if (mWordComposer.size() == 1) {
mWordComposer.setAutoCapitalized(
getCurrentAutoCapsState() != Constants.TextUtils.CAP_MODE_OFF);
}
mConnection.setComposingText(getTextWithUnderline(mWordComposer.getTypedWord()), 1);
} else {
final boolean swapWeakSpace = maybeStripSpace(primaryCode,
spaceState, KeyboardActionListener.SUGGESTION_STRIP_COORDINATE == x);
sendKeyCodePoint(primaryCode);
if (swapWeakSpace) {
swapSwapperAndSpace();
mSpaceState = SPACE_STATE_WEAK;
}
// In case the "add to dictionary" hint was still displayed.
if (null != mSuggestionStripView) mSuggestionStripView.dismissAddToDictionaryHint();
}
mHandler.postUpdateSuggestionStrip();
Utils.Stats.onNonSeparator((char)primaryCode, x, y);
}
// Returns true if we did an autocorrection, false otherwise.
private boolean handleSeparator(final int primaryCode, final int x, final int y,
final int spaceState) {
boolean didAutoCorrect = false;
// Handle separator
if (mWordComposer.isComposingWord()) {
// In certain languages where single quote is a separator, it's better
// not to auto correct, but accept the typed word. For instance,
// in Italian dov' should not be expanded to dove' because the elision
// requires the last vowel to be removed.
if (mCurrentSettings.mCorrectionEnabled && primaryCode != Keyboard.CODE_SINGLE_QUOTE) {
commitCurrentAutoCorrection(primaryCode);
didAutoCorrect = true;
} else {
commitTyped(primaryCode);
}
}
final boolean swapWeakSpace = maybeStripSpace(primaryCode, spaceState,
KeyboardActionListener.SUGGESTION_STRIP_COORDINATE == x);
if (SPACE_STATE_PHANTOM == spaceState &&
mCurrentSettings.isPhantomSpacePromotingSymbol(primaryCode)) {
sendKeyCodePoint(Keyboard.CODE_SPACE);
}
sendKeyCodePoint(primaryCode);
if (Keyboard.CODE_SPACE == primaryCode) {
if (mCurrentSettings.isSuggestionsRequested(mDisplayOrientation)) {
if (maybeDoubleSpace()) {
mSpaceState = SPACE_STATE_DOUBLE;
} else if (!isShowingPunctuationList()) {
mSpaceState = SPACE_STATE_WEAK;
}
}
mHandler.startDoubleSpacesTimer();
if (!mConnection.isCursorTouchingWord(mCurrentSettings)) {
mHandler.postUpdateSuggestionStrip();
}
} else {
if (swapWeakSpace) {
swapSwapperAndSpace();
mSpaceState = SPACE_STATE_SWAP_PUNCTUATION;
} else if (SPACE_STATE_PHANTOM == spaceState
&& !mCurrentSettings.isWeakSpaceStripper(primaryCode)) {
// If we are in phantom space state, and the user presses a separator, we want to
// stay in phantom space state so that the next keypress has a chance to add the
// space. For example, if I type "Good dat", pick "day" from the suggestion strip
// then insert a comma and go on to typing the next word, I want the space to be
// inserted automatically before the next word, the same way it is when I don't
// input the comma.
// The case is a little different if the separator is a space stripper. Such a
// separator does not normally need a space on the right (that's the difference
// between swappers and strippers), so we should not stay in phantom space state if
// the separator is a stripper. Hence the additional test above.
mSpaceState = SPACE_STATE_PHANTOM;
}
// Set punctuation right away. onUpdateSelection will fire but tests whether it is
// already displayed or not, so it's okay.
setPunctuationSuggestions();
}
Utils.Stats.onSeparator((char)primaryCode, x, y);
return didAutoCorrect;
}
private CharSequence getTextWithUnderline(final CharSequence text) {
return mIsAutoCorrectionIndicatorOn
? SuggestionSpanUtils.getTextWithAutoCorrectionIndicatorUnderline(this, text)
: text;
}
private void handleClose() {
commitTyped(LastComposedWord.NOT_A_SEPARATOR);
requestHideSelf(0);
MainKeyboardView inputView = mKeyboardSwitcher.getKeyboardView();
if (inputView != null)
inputView.closing();
}
// TODO: make this private
// Outside LatinIME, only used by the test suite.
/* package for tests */ boolean isShowingPunctuationList() {
if (mSuggestionStripView == null) return false;
return mCurrentSettings.mSuggestPuncList == mSuggestionStripView.getSuggestions();
}
private boolean isSuggestionsStripVisible() {
if (mSuggestionStripView == null)
return false;
if (mSuggestionStripView.isShowingAddToDictionaryHint())
return true;
if (!mCurrentSettings.isSuggestionStripVisibleInOrientation(mDisplayOrientation))
return false;
if (mCurrentSettings.isApplicationSpecifiedCompletionsOn())
return true;
return mCurrentSettings.isSuggestionsRequested(mDisplayOrientation);
}
private void clearSuggestionStrip() {
setSuggestionStrip(SuggestedWords.EMPTY, false);
setAutoCorrectionIndicator(false);
}
private void setSuggestionStrip(final SuggestedWords words, final boolean isAutoCorrection) {
if (mSuggestionStripView != null) {
mSuggestionStripView.setSuggestions(words);
mKeyboardSwitcher.onAutoCorrectionStateChanged(isAutoCorrection);
}
}
private void setAutoCorrectionIndicator(final boolean newAutoCorrectionIndicator) {
// Put a blue underline to a word in TextView which will be auto-corrected.
if (mIsAutoCorrectionIndicatorOn != newAutoCorrectionIndicator
&& mWordComposer.isComposingWord()) {
mIsAutoCorrectionIndicatorOn = newAutoCorrectionIndicator;
final CharSequence textWithUnderline =
getTextWithUnderline(mWordComposer.getTypedWord());
mConnection.setComposingText(textWithUnderline, 1);
}
}
private void updateSuggestionStrip() {
mHandler.cancelUpdateSuggestionStrip();
// Check if we have a suggestion engine attached.
if (mSuggest == null || !mCurrentSettings.isSuggestionsRequested(mDisplayOrientation)) {
if (mWordComposer.isComposingWord()) {
Log.w(TAG, "Called updateSuggestionsOrPredictions but suggestions were not "
+ "requested!");
mWordComposer.setAutoCorrection(mWordComposer.getTypedWord());
}
return;
}
if (!mWordComposer.isComposingWord() && !mCurrentSettings.mBigramPredictionEnabled) {
setPunctuationSuggestions();
return;
}
final SuggestedWords suggestedWords = getSuggestedWords();
final String typedWord = mWordComposer.getTypedWord();
showSuggestionStrip(suggestedWords, typedWord);
}
private SuggestedWords getSuggestedWords() {
final String typedWord = mWordComposer.getTypedWord();
// Get the word on which we should search the bigrams. If we are composing a word, it's
// whatever is *before* the half-committed word in the buffer, hence 2; if we aren't, we
// should just skip whitespace if any, so 1.
// TODO: this is slow (2-way IPC) - we should probably cache this instead.
final CharSequence prevWord =
mConnection.getNthPreviousWord(mCurrentSettings.mWordSeparators,
mWordComposer.isComposingWord() ? 2 : 1);
final SuggestedWords suggestedWords = mSuggest.getSuggestedWords(mWordComposer,
prevWord, mKeyboardSwitcher.getKeyboard().getProximityInfo(),
mCurrentSettings.mCorrectionEnabled);
return maybeRetrieveOlderSuggestions(typedWord, suggestedWords);
}
private SuggestedWords maybeRetrieveOlderSuggestions(final CharSequence typedWord,
final SuggestedWords suggestedWords) {
// TODO: consolidate this into getSuggestedWords
// We update the suggestion strip only when we have some suggestions to show, i.e. when
// the suggestion count is > 1; else, we leave the old suggestions, with the typed word
// replaced with the new one. However, when the word is a dictionary word, or when the
// length of the typed word is 1 or 0 (after a deletion typically), we do want to remove the
// old suggestions. Also, if we are showing the "add to dictionary" hint, we need to
// revert to suggestions - although it is unclear how we can come here if it's displayed.
if (suggestedWords.size() > 1 || typedWord.length() <= 1
|| !suggestedWords.mTypedWordValid
|| mSuggestionStripView.isShowingAddToDictionaryHint()) {
return suggestedWords;
} else {
SuggestedWords previousSuggestions = mSuggestionStripView.getSuggestions();
if (previousSuggestions == mCurrentSettings.mSuggestPuncList) {
previousSuggestions = SuggestedWords.EMPTY;
}
final ArrayList<SuggestedWords.SuggestedWordInfo> typedWordAndPreviousSuggestions =
SuggestedWords.getTypedWordAndPreviousSuggestions(
typedWord, previousSuggestions);
return new SuggestedWords(typedWordAndPreviousSuggestions,
false /* typedWordValid */,
false /* hasAutoCorrectionCandidate */,
false /* isPunctuationSuggestions */,
true /* isObsoleteSuggestions */,
false /* isPrediction */);
}
}
private void showSuggestionStrip(final SuggestedWords suggestedWords,
final CharSequence typedWord) {
if (null == suggestedWords || suggestedWords.size() <= 0) {
clearSuggestionStrip();
return;
}
final CharSequence autoCorrection;
if (suggestedWords.size() > 0) {
if (suggestedWords.mWillAutoCorrect) {
autoCorrection = suggestedWords.getWord(1);
} else {
autoCorrection = typedWord;
}
} else {
autoCorrection = null;
}
mWordComposer.setAutoCorrection(autoCorrection);
final boolean isAutoCorrection = suggestedWords.willAutoCorrect();
setSuggestionStrip(suggestedWords, isAutoCorrection);
setAutoCorrectionIndicator(isAutoCorrection);
setSuggestionStripShown(isSuggestionsStripVisible());
}
private void commitCurrentAutoCorrection(final int separatorCodePoint) {
// Complete any pending suggestions query first
if (mHandler.hasPendingUpdateSuggestions()) {
updateSuggestionStrip();
}
final CharSequence typedAutoCorrection = mWordComposer.getAutoCorrectionOrNull();
final String typedWord = mWordComposer.getTypedWord();
final CharSequence autoCorrection = (typedAutoCorrection != null)
? typedAutoCorrection : typedWord;
if (autoCorrection != null) {
if (TextUtils.isEmpty(typedWord)) {
throw new RuntimeException("We have an auto-correction but the typed word "
+ "is empty? Impossible! I must commit suicide.");
}
Utils.Stats.onAutoCorrection(typedWord, autoCorrection.toString(), separatorCodePoint);
if (ProductionFlag.IS_EXPERIMENTAL) {
ResearchLogger.latinIME_commitCurrentAutoCorrection(typedWord,
autoCorrection.toString());
}
mExpectingUpdateSelection = true;
commitChosenWord(autoCorrection, LastComposedWord.COMMIT_TYPE_DECIDED_WORD,
separatorCodePoint);
if (!typedWord.equals(autoCorrection)) {
// This will make the correction flash for a short while as a visual clue
// to the user that auto-correction happened.
mConnection.commitCorrection(
new CorrectionInfo(mLastSelectionEnd - typedWord.length(),
typedWord, autoCorrection));
}
}
}
// Called from {@link SuggestionStripView} through the {@link SuggestionStripView#Listener}
// interface
@Override
public void pickSuggestionManually(final int index, final CharSequence suggestion,
final int x, final int y) {
final SuggestedWords suggestedWords = mSuggestionStripView.getSuggestions();
// If this is a punctuation picked from the suggestion strip, pass it to onCodeInput
if (suggestion.length() == 1 && isShowingPunctuationList()) {
// Word separators are suggested before the user inputs something.
// So, LatinImeLogger logs "" as a user's input.
LatinImeLogger.logOnManualSuggestion("", suggestion.toString(), index, suggestedWords);
// Rely on onCodeInput to do the complicated swapping/stripping logic consistently.
if (ProductionFlag.IS_EXPERIMENTAL) {
ResearchLogger.latinIME_punctuationSuggestion(index, suggestion, x, y);
}
final int primaryCode = suggestion.charAt(0);
onCodeInput(primaryCode,
KeyboardActionListener.SUGGESTION_STRIP_COORDINATE,
KeyboardActionListener.SUGGESTION_STRIP_COORDINATE);
return;
}
mConnection.beginBatchEdit();
if (SPACE_STATE_PHANTOM == mSpaceState && suggestion.length() > 0
// In the batch input mode, a manually picked suggested word should just replace
// the current batch input text and there is no need for a phantom space.
&& !mWordComposer.isBatchMode()) {
int firstChar = Character.codePointAt(suggestion, 0);
if ((!mCurrentSettings.isWeakSpaceStripper(firstChar))
&& (!mCurrentSettings.isWeakSpaceSwapper(firstChar))) {
sendKeyCodePoint(Keyboard.CODE_SPACE);
}
}
if (mCurrentSettings.isApplicationSpecifiedCompletionsOn()
&& mApplicationSpecifiedCompletions != null
&& index >= 0 && index < mApplicationSpecifiedCompletions.length) {
if (mSuggestionStripView != null) {
mSuggestionStripView.clear();
}
mKeyboardSwitcher.updateShiftState();
resetComposingState(true /* alsoResetLastComposedWord */);
final CompletionInfo completionInfo = mApplicationSpecifiedCompletions[index];
mConnection.commitCompletion(completionInfo);
mConnection.endBatchEdit();
if (ProductionFlag.IS_EXPERIMENTAL) {
ResearchLogger.latinIME_pickApplicationSpecifiedCompletion(index,
completionInfo.getText(), x, y);
}
return;
}
// We need to log before we commit, because the word composer will store away the user
// typed word.
final String replacedWord = mWordComposer.getTypedWord().toString();
LatinImeLogger.logOnManualSuggestion(replacedWord,
suggestion.toString(), index, suggestedWords);
if (ProductionFlag.IS_EXPERIMENTAL) {
ResearchLogger.latinIME_pickSuggestionManually(replacedWord, index, suggestion, x, y);
}
mExpectingUpdateSelection = true;
commitChosenWord(suggestion, LastComposedWord.COMMIT_TYPE_MANUAL_PICK,
LastComposedWord.NOT_A_SEPARATOR);
mConnection.endBatchEdit();
// Don't allow cancellation of manual pick
mLastComposedWord.deactivate();
mSpaceState = SPACE_STATE_PHANTOM;
// TODO: is this necessary?
mKeyboardSwitcher.updateShiftState();
// We should show the "Touch again to save" hint if the user pressed the first entry
// AND it's in none of our current dictionaries (main, user or otherwise).
// Please note that if mSuggest is null, it means that everything is off: suggestion
// and correction, so we shouldn't try to show the hint
final boolean showingAddToDictionaryHint = index == 0 && mSuggest != null
// If the suggestion is not in the dictionary, the hint should be shown.
&& !AutoCorrection.isValidWord(mSuggest.getUnigramDictionaries(), suggestion, true);
Utils.Stats.onSeparator((char)Keyboard.CODE_SPACE, WordComposer.NOT_A_COORDINATE,
WordComposer.NOT_A_COORDINATE);
if (showingAddToDictionaryHint && mIsUserDictionaryAvailable) {
mSuggestionStripView.showAddToDictionaryHint(
suggestion, mCurrentSettings.mHintToSaveText);
} else {
// If we're not showing the "Touch again to save", then update the suggestion strip.
mHandler.postUpdateSuggestionStrip();
}
}
/**
* Commits the chosen word to the text field and saves it for later retrieval.
*/
private void commitChosenWord(final CharSequence chosenWord, final int commitType,
final int separatorCode) {
final SuggestedWords suggestedWords = mSuggestionStripView.getSuggestions();
mConnection.commitText(SuggestionSpanUtils.getTextWithSuggestionSpan(
this, chosenWord, suggestedWords, mIsMainDictionaryAvailable), 1);
if (ProductionFlag.IS_EXPERIMENTAL) {
ResearchLogger.latinIME_commitText(chosenWord);
}
// Add the word to the user history dictionary
final CharSequence prevWord = addToUserHistoryDictionary(chosenWord);
// TODO: figure out here if this is an auto-correct or if the best word is actually
// what user typed. Note: currently this is done much later in
// LastComposedWord#didCommitTypedWord by string equality of the remembered
// strings.
mLastComposedWord = mWordComposer.commitWord(commitType, chosenWord.toString(),
separatorCode, prevWord);
}
private void setPunctuationSuggestions() {
if (mCurrentSettings.mBigramPredictionEnabled) {
clearSuggestionStrip();
} else {
setSuggestionStrip(mCurrentSettings.mSuggestPuncList, false);
}
setAutoCorrectionIndicator(false);
setSuggestionStripShown(isSuggestionsStripVisible());
}
private CharSequence addToUserHistoryDictionary(final CharSequence suggestion) {
if (TextUtils.isEmpty(suggestion)) return null;
// If correction is not enabled, we don't add words to the user history dictionary.
// That's to avoid unintended additions in some sensitive fields, or fields that
// expect to receive non-words.
if (!mCurrentSettings.mCorrectionEnabled) return null;
final UserHistoryDictionary userHistoryDictionary = mUserHistoryDictionary;
if (userHistoryDictionary != null) {
final CharSequence prevWord
= mConnection.getNthPreviousWord(mCurrentSettings.mWordSeparators, 2);
final String secondWord;
if (mWordComposer.isAutoCapitalized() && !mWordComposer.isMostlyCaps()) {
secondWord = suggestion.toString().toLowerCase(
mSubtypeSwitcher.getCurrentSubtypeLocale());
} else {
secondWord = suggestion.toString();
}
// We demote unrecognized words (frequency < 0, below) by specifying them as "invalid".
// We don't add words with 0-frequency (assuming they would be profanity etc.).
final int maxFreq = AutoCorrection.getMaxFrequency(
mSuggest.getUnigramDictionaries(), suggestion);
if (maxFreq == 0) return null;
userHistoryDictionary.addToUserHistory(null == prevWord ? null : prevWord.toString(),
secondWord, maxFreq > 0);
return prevWord;
}
return null;
}
/**
* Check if the cursor is actually at the end of a word. If so, restart suggestions on this
* word, else do nothing.
*/
private void restartSuggestionsOnWordBeforeCursorIfAtEndOfWord() {
final CharSequence word = mConnection.getWordBeforeCursorIfAtEndOfWord(mCurrentSettings);
if (null != word) {
restartSuggestionsOnWordBeforeCursor(word);
}
}
private void restartSuggestionsOnWordBeforeCursor(final CharSequence word) {
mWordComposer.setComposingWord(word, mKeyboardSwitcher.getKeyboard());
final int length = word.length();
mConnection.deleteSurroundingText(length, 0);
if (ProductionFlag.IS_EXPERIMENTAL) {
ResearchLogger.latinIME_deleteSurroundingText(length);
}
mConnection.setComposingText(word, 1);
mHandler.postUpdateSuggestionStrip();
}
private void revertCommit() {
final CharSequence previousWord = mLastComposedWord.mPrevWord;
final String originallyTypedWord = mLastComposedWord.mTypedWord;
final CharSequence committedWord = mLastComposedWord.mCommittedWord;
final int cancelLength = committedWord.length();
final int separatorLength = LastComposedWord.getSeparatorLength(
mLastComposedWord.mSeparatorCode);
// TODO: should we check our saved separator against the actual contents of the text view?
final int deleteLength = cancelLength + separatorLength;
if (DEBUG) {
if (mWordComposer.isComposingWord()) {
throw new RuntimeException("revertCommit, but we are composing a word");
}
final String wordBeforeCursor =
mConnection.getTextBeforeCursor(deleteLength, 0)
.subSequence(0, cancelLength).toString();
if (!TextUtils.equals(committedWord, wordBeforeCursor)) {
throw new RuntimeException("revertCommit check failed: we thought we were "
+ "reverting \"" + committedWord
+ "\", but before the cursor we found \"" + wordBeforeCursor + "\"");
}
}
mConnection.deleteSurroundingText(deleteLength, 0);
if (ProductionFlag.IS_EXPERIMENTAL) {
ResearchLogger.latinIME_deleteSurroundingText(deleteLength);
}
if (!TextUtils.isEmpty(previousWord) && !TextUtils.isEmpty(committedWord)) {
mUserHistoryDictionary.cancelAddingUserHistory(
previousWord.toString(), committedWord.toString());
}
mConnection.commitText(originallyTypedWord, 1);
// Re-insert the separator
sendKeyCodePoint(mLastComposedWord.mSeparatorCode);
Utils.Stats.onSeparator(mLastComposedWord.mSeparatorCode, WordComposer.NOT_A_COORDINATE,
WordComposer.NOT_A_COORDINATE);
if (ProductionFlag.IS_EXPERIMENTAL) {
ResearchLogger.latinIME_revertCommit(originallyTypedWord);
}
// Don't restart suggestion yet. We'll restart if the user deletes the
// separator.
mLastComposedWord = LastComposedWord.NOT_A_COMPOSED_WORD;
// We have a separator between the word and the cursor: we should show predictions.
mHandler.postUpdateSuggestionStrip();
}
// Used by the RingCharBuffer
public boolean isWordSeparator(int code) {
return mCurrentSettings.isWordSeparator(code);
}
// Notify that language or mode have been changed and toggleLanguage will update KeyboardID
// according to new language or mode. Called from SubtypeSwitcher.
public void onRefreshKeyboard() {
// When the device locale is changed in SetupWizard etc., this method may get called via
// onConfigurationChanged before SoftInputWindow is shown.
initSuggest();
loadSettings();
if (mKeyboardSwitcher.getKeyboardView() != null) {
// Reload keyboard because the current language has been changed.
mKeyboardSwitcher.loadKeyboard(getCurrentInputEditorInfo(), mCurrentSettings);
updateKeyboardViewGestureHandlingModeByMainDictionaryAvailability();
}
// Since we just changed languages, we should re-evaluate suggestions with whatever word
// we are currently composing. If we are not composing anything, we may want to display
// predictions or punctuation signs (which is done by the updateSuggestionStrip anyway).
mHandler.postUpdateSuggestionStrip();
}
private void updateKeyboardViewGestureHandlingModeByMainDictionaryAvailability() {
final MainKeyboardView keyboardView = mKeyboardSwitcher.getKeyboardView();
if (keyboardView != null) {
final boolean shouldHandleGesture = mCurrentSettings.mGestureInputEnabled
&& mIsMainDictionaryAvailable;
keyboardView.setGestureHandlingMode(shouldHandleGesture,
mCurrentSettings.mGesturePreviewTrailEnabled,
mCurrentSettings.mGestureFloatingPreviewTextEnabled);
}
}
// TODO: Remove this method from {@link LatinIME} and move {@link FeedbackManager} to
// {@link KeyboardSwitcher}. Called from KeyboardSwitcher
public void hapticAndAudioFeedback(final int primaryCode) {
mFeedbackManager.hapticAndAudioFeedback(primaryCode, mKeyboardSwitcher.getKeyboardView());
}
// Callback called by PointerTracker through the KeyboardActionListener. This is called when a
// key is depressed; release matching call is onReleaseKey below.
@Override
public void onPressKey(int primaryCode) {
mKeyboardSwitcher.onPressKey(primaryCode);
}
// Callback by PointerTracker through the KeyboardActionListener. This is called when a key
// is released; press matching call is onPressKey above.
@Override
public void onReleaseKey(int primaryCode, boolean withSliding) {
mKeyboardSwitcher.onReleaseKey(primaryCode, withSliding);
// If accessibility is on, ensure the user receives keyboard state updates.
if (AccessibilityUtils.getInstance().isTouchExplorationEnabled()) {
switch (primaryCode) {
case Keyboard.CODE_SHIFT:
AccessibleKeyboardViewProxy.getInstance().notifyShiftState();
break;
case Keyboard.CODE_SWITCH_ALPHA_SYMBOL:
AccessibleKeyboardViewProxy.getInstance().notifySymbolsState();
break;
}
}
if (Keyboard.CODE_DELETE == primaryCode) {
// This is a stopgap solution to avoid leaving a high surrogate alone in a text view.
// In the future, we need to deprecate deteleSurroundingText() and have a surrogate
// pair-friendly way of deleting characters in InputConnection.
final CharSequence lastChar = mConnection.getTextBeforeCursor(1, 0);
if (!TextUtils.isEmpty(lastChar) && Character.isHighSurrogate(lastChar.charAt(0))) {
mConnection.deleteSurroundingText(1, 0);
}
}
}
// receive ringer mode change and network state change.
private BroadcastReceiver mReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
final String action = intent.getAction();
if (action.equals(ConnectivityManager.CONNECTIVITY_ACTION)) {
mSubtypeSwitcher.onNetworkStateChanged(intent);
} else if (action.equals(AudioManager.RINGER_MODE_CHANGED_ACTION)) {
mFeedbackManager.onRingerModeChanged();
}
}
};
private void launchSettings() {
handleClose();
launchSubActivity(SettingsActivity.class);
}
// Called from debug code only
public void launchDebugSettings() {
handleClose();
launchSubActivity(DebugSettingsActivity.class);
}
public void launchKeyboardedDialogActivity(Class<? extends Activity> activityClass) {
// Put the text in the attached EditText into a safe, saved state before switching to a
// new activity that will also use the soft keyboard.
commitTyped(LastComposedWord.NOT_A_SEPARATOR);
launchSubActivity(activityClass);
}
private void launchSubActivity(Class<? extends Activity> activityClass) {
Intent intent = new Intent();
intent.setClass(LatinIME.this, activityClass);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);
}
private void showSubtypeSelectorAndSettings() {
final CharSequence title = getString(R.string.english_ime_input_options);
final CharSequence[] items = new CharSequence[] {
// TODO: Should use new string "Select active input modes".
getString(R.string.language_selection_title),
getString(R.string.english_ime_settings),
};
final Context context = this;
final DialogInterface.OnClickListener listener = new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface di, int position) {
di.dismiss();
switch (position) {
case 0:
Intent intent = CompatUtils.getInputLanguageSelectionIntent(
ImfUtils.getInputMethodIdOfThisIme(context),
Intent.FLAG_ACTIVITY_NEW_TASK
| Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED
| Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(intent);
break;
case 1:
launchSettings();
break;
}
}
};
final AlertDialog.Builder builder = new AlertDialog.Builder(this)
.setItems(items, listener)
.setTitle(title);
showOptionDialog(builder.create());
}
public void showOptionDialog(AlertDialog dialog) {
final IBinder windowToken = mKeyboardSwitcher.getKeyboardView().getWindowToken();
if (windowToken == null) return;
dialog.setCancelable(true);
dialog.setCanceledOnTouchOutside(true);
final Window window = dialog.getWindow();
final WindowManager.LayoutParams lp = window.getAttributes();
lp.token = windowToken;
lp.type = WindowManager.LayoutParams.TYPE_APPLICATION_ATTACHED_DIALOG;
window.setAttributes(lp);
window.addFlags(WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM);
mOptionsDialog = dialog;
dialog.show();
}
@Override
protected void dump(FileDescriptor fd, PrintWriter fout, String[] args) {
super.dump(fd, fout, args);
final Printer p = new PrintWriterPrinter(fout);
p.println("LatinIME state :");
final Keyboard keyboard = mKeyboardSwitcher.getKeyboard();
final int keyboardMode = keyboard != null ? keyboard.mId.mMode : -1;
p.println(" Keyboard mode = " + keyboardMode);
p.println(" mIsSuggestionsSuggestionsRequested = "
+ mCurrentSettings.isSuggestionsRequested(mDisplayOrientation));
p.println(" mCorrectionEnabled=" + mCurrentSettings.mCorrectionEnabled);
p.println(" isComposingWord=" + mWordComposer.isComposingWord());
p.println(" mSoundOn=" + mCurrentSettings.mSoundOn);
p.println(" mVibrateOn=" + mCurrentSettings.mVibrateOn);
p.println(" mKeyPreviewPopupOn=" + mCurrentSettings.mKeyPreviewPopupOn);
p.println(" inputAttributes=" + mCurrentSettings.getInputAttributesDebugString());
}
}