diff options
Diffstat (limited to 'java/src/com/android/inputmethod/latin/RichInputMethodManager.java')
| -rw-r--r-- | java/src/com/android/inputmethod/latin/RichInputMethodManager.java | 140 |
1 files changed, 124 insertions, 16 deletions
diff --git a/java/src/com/android/inputmethod/latin/RichInputMethodManager.java b/java/src/com/android/inputmethod/latin/RichInputMethodManager.java index e39aae958..94513e635 100644 --- a/java/src/com/android/inputmethod/latin/RichInputMethodManager.java +++ b/java/src/com/android/inputmethod/latin/RichInputMethodManager.java @@ -22,6 +22,7 @@ import android.content.Context; import android.content.SharedPreferences; import android.os.IBinder; import android.preference.PreferenceManager; +import android.util.Log; import android.view.inputmethod.InputMethodInfo; import android.view.inputmethod.InputMethodManager; import android.view.inputmethod.InputMethodSubtype; @@ -46,6 +47,8 @@ public final class RichInputMethodManager { private InputMethodManagerCompatWrapper mImmWrapper; private InputMethodInfo mInputMethodInfoOfThisIme; + private static final int INDEX_NOT_FOUND = -1; + public static RichInputMethodManager getInstance() { sInstance.checkInitialized(); return sInstance; @@ -97,12 +100,107 @@ public final class RichInputMethodManager { throw new RuntimeException("Input method id for " + packageName + " not found."); } + public List<InputMethodSubtype> getMyEnabledInputMethodSubtypeList( + boolean allowsImplicitlySelectedSubtypes) { + return mImmWrapper.mImm.getEnabledInputMethodSubtypeList( + mInputMethodInfoOfThisIme, allowsImplicitlySelectedSubtypes); + } + public boolean switchToNextInputMethod(final IBinder token, final boolean onlyCurrentIme) { - final boolean result = mImmWrapper.switchToNextInputMethod(token, onlyCurrentIme); - if (!result) { - mImmWrapper.mImm.switchToLastInputMethod(token); + if (mImmWrapper.switchToNextInputMethod(token, onlyCurrentIme)) { + return true; + } + // Was not able to call {@link InputMethodManager#switchToNextInputMethodIBinder,boolean)} + // because the current device is running ICS or previous and lacks the API. + if (switchToNextInputSubtypeInThisIme(token, onlyCurrentIme)) { + return true; + } + return switchToNextInputMethodAndSubtype(token); + } + + private boolean switchToNextInputSubtypeInThisIme(final IBinder token, + final boolean onlyCurrentIme) { + final InputMethodManager imm = mImmWrapper.mImm; + final InputMethodSubtype currentSubtype = imm.getCurrentInputMethodSubtype(); + final List<InputMethodSubtype> enabledSubtypes = getMyEnabledInputMethodSubtypeList( + true /* allowsImplicitlySelectedSubtypes */); + final int currentIndex = getSubtypeIndexInList(currentSubtype, enabledSubtypes); + if (currentIndex == INDEX_NOT_FOUND) { + Log.w(TAG, "Can't find current subtype in enabled subtypes: subtype=" + + SubtypeLocale.getSubtypeDisplayName(currentSubtype)); + return false; + } + final int nextIndex = (currentIndex + 1) % enabledSubtypes.size(); + if (nextIndex <= currentIndex && !onlyCurrentIme) { + // The current subtype is the last or only enabled one and it needs to switch to + // next IME. + return false; + } + final InputMethodSubtype nextSubtype = enabledSubtypes.get(nextIndex); + setInputMethodAndSubtype(token, nextSubtype); + return true; + } + + private boolean switchToNextInputMethodAndSubtype(final IBinder token) { + final InputMethodManager imm = mImmWrapper.mImm; + final List<InputMethodInfo> enabledImis = imm.getEnabledInputMethodList(); + final int currentIndex = getImiIndexInList(mInputMethodInfoOfThisIme, enabledImis); + if (currentIndex == INDEX_NOT_FOUND) { + Log.w(TAG, "Can't find current IME in enabled IMEs: IME package=" + + mInputMethodInfoOfThisIme.getPackageName()); + return false; + } + final InputMethodInfo nextImi = getNextNonAuxiliaryIme(currentIndex, enabledImis); + final List<InputMethodSubtype> enabledSubtypes = imm.getEnabledInputMethodSubtypeList( + nextImi, true /* allowsImplicitlySelectedSubtypes */); + if (enabledSubtypes.isEmpty()) { + // The next IME has no subtype. + imm.setInputMethod(token, nextImi.getId()); + return true; + } + final InputMethodSubtype firstSubtype = enabledSubtypes.get(0); + imm.setInputMethodAndSubtype(token, nextImi.getId(), firstSubtype); + return true; + } + + private static int getImiIndexInList(final InputMethodInfo inputMethodInfo, + final List<InputMethodInfo> imiList) { + final int count = imiList.size(); + for (int index = 0; index < count; index++) { + final InputMethodInfo imi = imiList.get(index); + if (imi.equals(inputMethodInfo)) { + return index; + } + } + return INDEX_NOT_FOUND; + } + + // This method mimics {@link InputMethodManager#switchToNextInputMethod(IBinder,boolean)}. + private static InputMethodInfo getNextNonAuxiliaryIme(final int currentIndex, + final List<InputMethodInfo> imiList) { + final int count = imiList.size(); + for (int i = 1; i < count; i++) { + final int nextIndex = (currentIndex + i) % count; + final InputMethodInfo nextImi = imiList.get(nextIndex); + if (!isAuxiliaryIme(nextImi)) { + return nextImi; + } + } + return imiList.get(currentIndex); + } + + // Copied from {@link InputMethodInfo}. See how auxiliary of IME is determined. + private static boolean isAuxiliaryIme(final InputMethodInfo imi) { + final int count = imi.getSubtypeCount(); + if (count == 0) { return false; } + for (int index = 0; index < count; index++) { + final InputMethodSubtype subtype = imi.getSubtypeAt(index); + if (!subtype.isAuxiliary()) { + return false; + } + } return true; } @@ -122,8 +220,8 @@ public final class RichInputMethodManager { final InputMethodSubtype subtype) { final boolean subtypeEnabled = checkIfSubtypeBelongsToThisImeAndEnabled(subtype); final boolean subtypeExplicitlyEnabled = checkIfSubtypeBelongsToList( - subtype, mImmWrapper.mImm.getEnabledInputMethodSubtypeList( - mInputMethodInfoOfThisIme, false /* allowsImplicitlySelectedSubtypes */)); + subtype, getMyEnabledInputMethodSubtypeList( + false /* allowsImplicitlySelectedSubtypes */)); return subtypeEnabled && !subtypeExplicitlyEnabled; } @@ -136,24 +234,35 @@ public final class RichInputMethodManager { private static boolean checkIfSubtypeBelongsToList(final InputMethodSubtype subtype, final List<InputMethodSubtype> subtypes) { - for (final InputMethodSubtype ims : subtypes) { + return getSubtypeIndexInList(subtype, subtypes) != INDEX_NOT_FOUND; + } + + private static int getSubtypeIndexInList(final InputMethodSubtype subtype, + final List<InputMethodSubtype> subtypes) { + final int count = subtypes.size(); + for (int index = 0; index < count; index++) { + final InputMethodSubtype ims = subtypes.get(index); if (ims.equals(subtype)) { - return true; + return index; } } - return false; + return INDEX_NOT_FOUND; } public boolean checkIfSubtypeBelongsToThisIme(final InputMethodSubtype subtype) { - final InputMethodInfo myImi = mInputMethodInfoOfThisIme; - final int count = myImi.getSubtypeCount(); - for (int i = 0; i < count; i++) { - final InputMethodSubtype ims = myImi.getSubtypeAt(i); + return getSubtypeIndexInIme(subtype, mInputMethodInfoOfThisIme) != INDEX_NOT_FOUND; + } + + private static int getSubtypeIndexInIme(final InputMethodSubtype subtype, + final InputMethodInfo imi) { + final int count = imi.getSubtypeCount(); + for (int index = 0; index < count; index++) { + final InputMethodSubtype ims = imi.getSubtypeAt(index); if (ims.equals(subtype)) { - return true; + return index; } } - return false; + return INDEX_NOT_FOUND; } public InputMethodSubtype getCurrentInputMethodSubtype( @@ -209,8 +318,7 @@ public final class RichInputMethodManager { if (filteredImisCount > 1) { return true; } - final List<InputMethodSubtype> subtypes = - mImmWrapper.mImm.getEnabledInputMethodSubtypeList(null, true); + final List<InputMethodSubtype> subtypes = getMyEnabledInputMethodSubtypeList(true); int keyboardCount = 0; // imm.getEnabledInputMethodSubtypeList(null, true) will return the current IME's // both explicitly and implicitly enabled input method subtype. |