Add a history of InputMethodSubtype for getting the last subtype of selected... (1ab852fb) · Commits · e / os / android_frameworks_base

core/java/android/provider/Settings.java

+8 −0

Original line number	Diff line number	Diff line
		@@ -2395,6 +2395,14 @@ public final class Settings {
		public static final String SELECTED_INPUT_METHOD_SUBTYPE =
		"selected_input_method_subtype";

		/**
		* Setting to record the history of input method subtype, holding the pair of ID of IME
		* and its last used subtype.
		* @hide
		*/
		public static final String INPUT_METHODS_SUBTYPE_HISTORY =
		"input_methods_subtype_history";

		/**
		* Whether the device has been provisioned (0 = false, 1 = true)
		*/

services/java/com/android/server/InputMethodManagerService.java

+226 −47

Original line number	Diff line number	Diff line
		@@ -116,6 +116,7 @@ public class InputMethodManagerService extends IInputMethodManager.Stub
		static final long TIME_TO_RECONNECT = 10*1000;

		private static final int NOT_A_SUBTYPE_ID = -1;
		private static final String NOT_A_SUBTYPE_ID_STR = String.valueOf(NOT_A_SUBTYPE_ID);
		// If IME doesn't support the system locale, the default subtype will be the first defined one.
		private static final int DEFAULT_SUBTYPE_ID = 0;

		@@ -366,9 +367,7 @@ public class InputMethodManagerService extends IInputMethodManager.Stub
		if (!doit) {
		return true;
		}
		Settings.Secure.putString(mContext.getContentResolver(),
		Settings.Secure.DEFAULT_INPUT_METHOD, "");
		resetSelectedInputMethodSubtype();
		resetSelectedInputMethodAndSubtypeLocked("");
		chooseNewDefaultIMELocked();
		return true;
		}
		@@ -425,9 +424,7 @@ public class InputMethodManagerService extends IInputMethodManager.Stub
		changed = true;
		curIm = null;
		Slog.i(TAG, "Unsetting current input method");
		Settings.Secure.putString(mContext.getContentResolver(),
		Settings.Secure.DEFAULT_INPUT_METHOD, "");
		resetSelectedInputMethodSubtype();
		resetSelectedInputMethodAndSubtypeLocked("");
		}
		}
		}
		@@ -510,9 +507,7 @@ public class InputMethodManagerService extends IInputMethodManager.Stub
		Slog.i(TAG, "No default found, using " + defIm.getId());
		}
		if (defIm != null) {
		Settings.Secure.putString(mContext.getContentResolver(),
		Settings.Secure.DEFAULT_INPUT_METHOD, defIm.getId());
		putSelectedInputMethodSubtype(defIm, NOT_A_SUBTYPE_ID);
		setSelectSubtypeLocked(defIm, NOT_A_SUBTYPE_ID);
		}
		}

		@@ -994,7 +989,7 @@ public class InputMethodManagerService extends IInputMethodManager.Stub
		synchronized (mMethodMap) {
		if (mCurMethod != null) {
		try {
		putSelectedInputMethodSubtype(info, subtypeId);
		setSelectSubtypeLocked(info, subtypeId);
		if (mInputShown) {
		// If mInputShown is false, there is no IME button on the
		// system bar.
		@@ -1014,13 +1009,13 @@ public class InputMethodManagerService extends IInputMethodManager.Stub

		final long ident = Binder.clearCallingIdentity();
		try {
		mCurMethodId = id;
		// Set a subtype to this input method.
		// subtypeId the name of a subtype which will be set.
		putSelectedInputMethodSubtype(info, subtypeId);

		Settings.Secure.putString(mContext.getContentResolver(),
		Settings.Secure.DEFAULT_INPUT_METHOD, id);
		setSelectedInputMethodAndSubtypeLocked(info, subtypeId);
		// mCurMethodId should be updated after setSelectedInputMethodAndSubtypeLocked()
		// because mCurMethodId is stored as a history in
		// setSelectedInputMethodAndSubtypeLocked().
		mCurMethodId = id;

		if (ActivityManagerNative.isSystemReady()) {
		Intent intent = new Intent(Intent.ACTION_INPUT_METHOD_CHANGED);
		@@ -1487,9 +1482,7 @@ public class InputMethodManagerService extends IInputMethodManager.Stub
		}
		}
		InputMethodInfo imi = enabled.get(i);
		Settings.Secure.putString(mContext.getContentResolver(),
		Settings.Secure.DEFAULT_INPUT_METHOD, imi.getId());
		putSelectedInputMethodSubtype(imi, NOT_A_SUBTYPE_ID);
		resetSelectedInputMethodAndSubtypeLocked(imi.getId());
		return true;
		}

		@@ -1793,11 +1786,8 @@ public class InputMethodManagerService extends IInputMethodManager.Stub
		String selId = Settings.Secure.getString(mContext.getContentResolver(),
		Settings.Secure.DEFAULT_INPUT_METHOD);
		if (id.equals(selId)) {
		Settings.Secure.putString(
		mContext.getContentResolver(), Settings.Secure.DEFAULT_INPUT_METHOD,
		enabledInputMethodsList.size() > 0
		resetSelectedInputMethodAndSubtypeLocked(enabledInputMethodsList.size() > 0
		? enabledInputMethodsList.get(0).first : "");
		resetSelectedInputMethodSubtype();
		}
		// Previous state was enabled.
		return true;
		@@ -1809,30 +1799,61 @@ public class InputMethodManagerService extends IInputMethodManager.Stub
		}
		}

		private void resetSelectedInputMethodSubtype() {
		Settings.Secure.putInt(mContext.getContentResolver(),
		Settings.Secure.SELECTED_INPUT_METHOD_SUBTYPE, NOT_A_SUBTYPE_ID);
		private void saveCurrentInputMethodAndSubtypeToHistory() {
		String subtypeId = NOT_A_SUBTYPE_ID_STR;
		if (mCurrentSubtype != null) {
		subtypeId = String.valueOf(mCurrentSubtype.hashCode());
		}
		mSettings.addSubtypeToHistory(mCurMethodId, subtypeId);
		}

		private void putSelectedInputMethodSubtype(InputMethodInfo imi, int subtypeId) {
		private void setSelectSubtypeLocked(InputMethodInfo imi, int subtypeId) {
		saveCurrentInputMethodAndSubtypeToHistory();
		if (imi == null \|\| subtypeId < 0) {
		mSettings.putSelectedSubtype(NOT_A_SUBTYPE_ID);
		mCurrentSubtype = null;
		} else {
		final ArrayList<InputMethodSubtype> subtypes = imi.getSubtypes();
		if (subtypeId >= 0 && subtypeId < subtypes.size()) {
		Settings.Secure.putInt(mContext.getContentResolver(),
		Settings.Secure.SELECTED_INPUT_METHOD_SUBTYPE,
		subtypes.get(subtypeId).hashCode());
		if (subtypeId < subtypes.size()) {
		mSettings.putSelectedSubtype(subtypes.get(subtypeId).hashCode());
		mCurrentSubtype = subtypes.get(subtypeId);
		} else {
		resetSelectedInputMethodSubtype();
		mSettings.putSelectedSubtype(NOT_A_SUBTYPE_ID);
		mCurrentSubtype = null;
		}
		}

		}

		private void setSelectedInputMethodAndSubtypeLocked(InputMethodInfo imi, int subtypeId) {
		setSelectSubtypeLocked(imi, subtypeId);
		mSettings.putSelectedInputMethod(imi.getId());
		}

		private void resetSelectedInputMethodAndSubtypeLocked(String newDefaultIme) {
		InputMethodInfo imi = mMethodMap.get(newDefaultIme);
		int lastSubtypeId = NOT_A_SUBTYPE_ID;
		// newDefaultIme is empty when there is no candidate for the selected IME.
		if (imi != null && !TextUtils.isEmpty(newDefaultIme)) {
		String subtypeHashCode = mSettings.getLastSubtypeForInputMethodLocked(newDefaultIme);
		if (subtypeHashCode != null) {
		try {
		lastSubtypeId = getSubtypeIdFromHashCode(
		imi, Integer.valueOf(subtypeHashCode));
		} catch (NumberFormatException e) {
		Slog.w(TAG, "HashCode for subtype looks broken: " + subtypeHashCode, e);
		}
		}
		}
		setSelectSubtypeLocked(imi, lastSubtypeId);
		mSettings.putSelectedInputMethod(newDefaultIme);
		}

		private int getSelectedInputMethodSubtypeId(String id) {
		InputMethodInfo imi = mMethodMap.get(id);
		if (imi == null) {
		return NOT_A_SUBTYPE_ID;
		}
		ArrayList<InputMethodSubtype> subtypes = imi.getSubtypes();
		int subtypeId;
		try {
		subtypeId = Settings.Secure.getInt(mContext.getContentResolver(),
		@@ -1840,9 +1861,14 @@ public class InputMethodManagerService extends IInputMethodManager.Stub
		} catch (SettingNotFoundException e) {
		return NOT_A_SUBTYPE_ID;
		}
		return getSubtypeIdFromHashCode(imi, subtypeId);
		}

		private int getSubtypeIdFromHashCode(InputMethodInfo imi, int subtypeHashCode) {
		ArrayList<InputMethodSubtype> subtypes = imi.getSubtypes();
		for (int i = 0; i < subtypes.size(); ++i) {
		InputMethodSubtype ims = subtypes.get(i);
		if (subtypeId == ims.hashCode()) {
		if (subtypeHashCode == ims.hashCode()) {
		return i;
		}
		}
		@@ -1922,10 +1948,10 @@ public class InputMethodManagerService extends IInputMethodManager.Stub
		// example: ("ime0;subtype0;subtype1;subtype2:ime1:ime2;subtype0")
		private static final char INPUT_METHOD_SEPARATER = ':';
		private static final char INPUT_METHOD_SUBTYPE_SEPARATER = ';';
		private final TextUtils.SimpleStringSplitter mStringColonSplitter =
		private final TextUtils.SimpleStringSplitter mInputMethodSplitter =
		new TextUtils.SimpleStringSplitter(INPUT_METHOD_SEPARATER);

		private final TextUtils.SimpleStringSplitter mStringSemiColonSplitter =
		private final TextUtils.SimpleStringSplitter mSubtypeSplitter =
		new TextUtils.SimpleStringSplitter(INPUT_METHOD_SUBTYPE_SEPARATER);

		private final ContentResolver mResolver;
		@@ -1988,16 +2014,16 @@ public class InputMethodManagerService extends IInputMethodManager.Stub
		if (TextUtils.isEmpty(enabledInputMethodsStr)) {
		return imsList;
		}
		mStringColonSplitter.setString(enabledInputMethodsStr);
		while (mStringColonSplitter.hasNext()) {
		String nextImsStr = mStringColonSplitter.next();
		mStringSemiColonSplitter.setString(nextImsStr);
		if (mStringSemiColonSplitter.hasNext()) {
		mInputMethodSplitter.setString(enabledInputMethodsStr);
		while (mInputMethodSplitter.hasNext()) {
		String nextImsStr = mInputMethodSplitter.next();
		mSubtypeSplitter.setString(nextImsStr);
		if (mSubtypeSplitter.hasNext()) {
		ArrayList<String> subtypeHashes = new ArrayList<String>();
		// The first element is ime id.
		String imeId = mStringSemiColonSplitter.next();
		while (mStringSemiColonSplitter.hasNext()) {
		subtypeHashes.add(mStringSemiColonSplitter.next());
		String imeId = mSubtypeSplitter.next();
		while (mSubtypeSplitter.hasNext()) {
		subtypeHashes.add(mSubtypeSplitter.next());
		}
		imsList.add(new Pair<String, ArrayList<String>>(imeId, subtypeHashes));
		}
		@@ -2083,8 +2109,161 @@ public class InputMethodManagerService extends IInputMethodManager.Stub
		private String getEnabledInputMethodsStr() {
		mEnabledInputMethodsStrCache = Settings.Secure.getString(
		mResolver, Settings.Secure.ENABLED_INPUT_METHODS);
		if (DEBUG) {
		Slog.d(TAG, "getEnabledInputMethodsStr: " + mEnabledInputMethodsStrCache);
		}
		return mEnabledInputMethodsStrCache;
		}

		private void saveSubtypeHistory(
		List<Pair<String, String>> savedImes, String newImeId, String newSubtypeId) {
		StringBuilder builder = new StringBuilder();
		boolean isImeAdded = false;
		if (!TextUtils.isEmpty(newImeId) && !TextUtils.isEmpty(newSubtypeId)) {
		builder.append(newImeId).append(INPUT_METHOD_SUBTYPE_SEPARATER).append(
		newSubtypeId);
		isImeAdded = true;
		}
		for (Pair<String, String> ime: savedImes) {
		String imeId = ime.first;
		String subtypeId = ime.second;
		if (TextUtils.isEmpty(subtypeId)) {
		subtypeId = NOT_A_SUBTYPE_ID_STR;
		}
		if (isImeAdded) {
		builder.append(INPUT_METHOD_SEPARATER);
		} else {
		isImeAdded = true;
		}
		builder.append(imeId).append(INPUT_METHOD_SUBTYPE_SEPARATER).append(
		subtypeId);
		}
		// Remove the last INPUT_METHOD_SEPARATER
		putSubtypeHistoryStr(builder.toString());
		}

		public void addSubtypeToHistory(String imeId, String subtypeId) {
		List<Pair<String, String>> subtypeHistory = loadInputMethodAndSubtypeHistoryLocked();
		for (Pair<String, String> ime: subtypeHistory) {
		if (ime.first.equals(imeId)) {
		if (DEBUG) {
		Slog.v(TAG, "Subtype found in the history: " + imeId
		+ ime.second);
		}
		// We should break here
		subtypeHistory.remove(ime);
		break;
		}
		}
		saveSubtypeHistory(subtypeHistory, imeId, subtypeId);
		}

		private void putSubtypeHistoryStr(String str) {
		if (DEBUG) {
		Slog.d(TAG, "putSubtypeHistoryStr: " + str);
		}
		Settings.Secure.putString(
		mResolver, Settings.Secure.INPUT_METHODS_SUBTYPE_HISTORY, str);
		}

		public Pair<String, String> getLastInputMethodAndSubtypeLocked() {
		// Gets the first one from the history
		return getLastSubtypeForInputMethodLockedInternal(null);
		}

		public String getLastSubtypeForInputMethodLocked(String imeId) {
		Pair<String, String> ime = getLastSubtypeForInputMethodLockedInternal(imeId);
		if (ime != null) {
		return ime.second;
		} else {
		return null;
		}
		}

		private Pair<String, String> getLastSubtypeForInputMethodLockedInternal(String imeId) {
		List<Pair<String, ArrayList<String>>> enabledImes =
		getEnabledInputMethodsAndSubtypeListLocked();
		List<Pair<String, String>> subtypeHistory = loadInputMethodAndSubtypeHistoryLocked();
		for (Pair<String, String> imeAndSubtype: subtypeHistory) {
		final String imeInTheHistory = imeAndSubtype.first;
		// If imeId is empty, returns the first IME and subtype in the history
		if (TextUtils.isEmpty(imeId) \|\| imeInTheHistory.equals(imeId)) {
		final String subtypeInTheHistory = imeAndSubtype.second;
		final String subtypeHashCode = getEnabledSubtypeForInputMethodAndSubtypeLocked(
		enabledImes, imeInTheHistory, subtypeInTheHistory);
		if (!TextUtils.isEmpty(subtypeHashCode)) {
		if (DEBUG) {
		Slog.d(TAG, "Enabled subtype found in the history:" + subtypeHashCode);
		}
		return new Pair<String, String>(imeInTheHistory, subtypeHashCode);
		}
		}
		}
		if (DEBUG) {
		Slog.d(TAG, "No enabled IME found in the history");
		}
		return null;
		}

		private String getEnabledSubtypeForInputMethodAndSubtypeLocked(List<Pair<String,
		ArrayList<String>>> enabledImes, String imeId, String subtypeHashCode) {
		for (Pair<String, ArrayList<String>> enabledIme: enabledImes) {
		if (enabledIme.first.equals(imeId)) {
		for (String s: enabledIme.second) {
		if (s.equals(subtypeHashCode)) {
		// If both imeId and subtypeId are enabled, return subtypeId.
		return s;
		}
		}
		// If imeId was enabled but subtypeId was disabled.
		return NOT_A_SUBTYPE_ID_STR;
		}
		}
		// If both imeId and subtypeId are disabled, return null
		return null;
		}

		private List<Pair<String, String>> loadInputMethodAndSubtypeHistoryLocked() {
		ArrayList<Pair<String, String>> imsList = new ArrayList<Pair<String, String>>();
		final String subtypeHistoryStr = getSubtypeHistoryStr();
		if (TextUtils.isEmpty(subtypeHistoryStr)) {
		return imsList;
		}
		mInputMethodSplitter.setString(subtypeHistoryStr);
		while (mInputMethodSplitter.hasNext()) {
		String nextImsStr = mInputMethodSplitter.next();
		mSubtypeSplitter.setString(nextImsStr);
		if (mSubtypeSplitter.hasNext()) {
		String subtypeId = NOT_A_SUBTYPE_ID_STR;
		// The first element is ime id.
		String imeId = mSubtypeSplitter.next();
		while (mSubtypeSplitter.hasNext()) {
		subtypeId = mSubtypeSplitter.next();
		break;
		}
		imsList.add(new Pair<String, String>(imeId, subtypeId));
		}
		}
		return imsList;
		}

		private String getSubtypeHistoryStr() {
		if (DEBUG) {
		Slog.d(TAG, "getSubtypeHistoryStr: " + Settings.Secure.getString(
		mResolver, Settings.Secure.INPUT_METHODS_SUBTYPE_HISTORY));
		}
		return Settings.Secure.getString(
		mResolver, Settings.Secure.INPUT_METHODS_SUBTYPE_HISTORY);
		}

		public void putSelectedInputMethod(String imeId) {
		Settings.Secure.putString(mResolver, Settings.Secure.DEFAULT_INPUT_METHOD, imeId);
		}

		public void putSelectedSubtype(int subtypeId) {
		Settings.Secure.putInt(
		mResolver, Settings.Secure.SELECTED_INPUT_METHOD_SUBTYPE, subtypeId);
		}
		}

		// ----------------------------------------------------------------------