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Code Pull Requests Activity

the UI for the Android API now has stable word prediction

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This commit is contained in:
kr.angelov
2014-03-12 14:01:22 +00:00
parent 3ce5339f34
commit 0888760d66
1 changed files with 72 additions and 33 deletions
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105
src/ui/android/src/org/grammaticalframework/ui/android/TranslatorInputMethodService.java
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@@ -18,7 +18,8 @@ public class TranslatorInputMethodService extends InputMethodService
private CompletionsView mCandidateView;
private CompletionInfo[] mCompletions;
private StringBuilder mComposing = new StringBuilder();
private StringBuilder mComposingText = new StringBuilder();
private StringBuilder mComposingWord = new StringBuilder();
private boolean mPredictionOn;
private boolean mCompletionOn;
private boolean mCapsLock;
@@ -78,7 +79,8 @@ public class TranslatorInputMethodService extends InputMethodService
// Reset our state. We want to do this even if restarting, because
// the underlying state of the text editor could have changed in any way.
mComposing.setLength(0);
mComposingText.setLength(0);
mComposingWord.setLength(0);
updateCandidates();
if (!restarting) {
@@ -182,7 +184,8 @@ public class TranslatorInputMethodService extends InputMethodService
super.onFinishInput();
// Clear current composing text and candidates.
mComposing.setLength(0);
mComposingText.setLength(0);
mComposingWord.setLength(0);
updateCandidates();
// We only hide the candidates window when finishing input on
@@ -217,9 +220,10 @@ public class TranslatorInputMethodService extends InputMethodService
// If the current selection in the text view changes, we should
// clear whatever candidate text we have.
if (mComposing.length() > 0 && (newSelStart != candidatesEnd
|| newSelEnd != candidatesEnd)) {
mComposing.setLength(0);
if (mComposingText.length() + mComposingWord.length() > 0 &&
(newSelStart != candidatesEnd || newSelEnd != candidatesEnd)) {
mComposingText.setLength(0);
mComposingWord.setLength(0);
updateCandidates();
InputConnection ic = getCurrentInputConnection();
if (ic != null) {
@@ -260,13 +264,13 @@ public class TranslatorInputMethodService extends InputMethodService
c = c & KeyCharacterMap.COMBINING_ACCENT_MASK;
}
if (mComposing.length() > 0) {
char accent = mComposing.charAt(mComposing.length() -1 );
int composed = KeyEvent.getDeadChar(accent, c);
if (mComposingWord.length() > 0) {
char accent = mComposingWord.charAt(mComposingWord.length()-1);
int composed = KeyEvent.getDeadChar(accent, c);
if (composed != 0) {
c = composed;
mComposing.setLength(mComposing.length()-1);
mComposingWord.setLength(mComposingWord.length()-1);
}
}
@@ -294,7 +298,7 @@ public class TranslatorInputMethodService extends InputMethodService
// Special handling of the delete key: if we currently are
// composing text for the user, we want to modify that instead
// of let the application to the delete itself.
if (mComposing.length() > 0) {
if (mComposingText.length() + mComposingWord.length() > 0) {
onKey(TranslatorKeyboard.KEYCODE_DELETE, null);
return true;
}
@@ -317,9 +321,11 @@ public class TranslatorInputMethodService extends InputMethodService
* Helper function to commit any text being composed in to the editor.
*/
private void commitTyped(InputConnection inputConnection) {
if (mComposing.length() > 0) {
inputConnection.commitText(mComposing, mComposing.length());
mComposing.setLength(0);
if (mComposingText.length() + mComposingWord.length() > 0) {
String s = getComposingString();
inputConnection.commitText(s, s.length());
mComposingText.setLength(0);
mComposingWord.setLength(0);
updateCandidates();
}
}
@@ -368,7 +374,7 @@ public class TranslatorInputMethodService extends InputMethodService
mTranslator.setSourceLanguage(newSource);
handleChangeSourceLanguage(newSource);
} else if (primaryCode == TranslatorKeyboard.KEYCODE_TARGET_LANGUAGE) {
String translation = mTranslator.translate(mComposing.toString());
String translation = mTranslator.translate(mComposingText.toString());
getCurrentInputConnection().commitText(translation, 1);
return;
} else if (primaryCode < TranslatorKeyboard.KEYCODE_TARGET_LANGUAGE &&
@@ -403,8 +409,18 @@ public class TranslatorInputMethodService extends InputMethodService
getCurrentInputConnection().performEditorAction(mActionId & EditorInfo.IME_MASK_ACTION);
else
handleCharacter(primaryCode, keyCodes);
} else if (primaryCode == ' ' && mComposing.length() == 0) {
getCurrentInputConnection().commitText(" ", 1);
} else if (primaryCode == ' ') {
if (mComposingText.length() + mComposingWord.length() == 0)
getCurrentInputConnection().commitText(" ", 1);
else if (mComposingWord.length() > 0) {
mComposingText.append(mComposingWord);
mComposingText.append(' ');
mComposingWord.setLength(0);
getCurrentInputConnection().setComposingText(getComposingString(), 1);
} else {
mComposingText.append(' ');
getCurrentInputConnection().setComposingText(getComposingString(), 1);
}
} else {
handleCharacter(primaryCode, keyCodes);
}
@@ -414,7 +430,7 @@ public class TranslatorInputMethodService extends InputMethodService
InputConnection ic = getCurrentInputConnection();
if (ic == null) return;
ic.beginBatchEdit();
if (mComposing.length() > 0) {
if (mComposingText.length() > 0) {
commitTyped(ic);
}
ic.commitText(text, 0);
@@ -429,9 +445,9 @@ public class TranslatorInputMethodService extends InputMethodService
*/
private void updateCandidates() {
if (!mCompletionOn) {
if (mComposing.length() > 1) {
if (mComposingWord.length() > 1) {
mCompletions =
mTranslator.lookupWordPrefix(mComposing.toString());
mTranslator.lookupWordPrefix(mComposingWord.toString());
setSuggestions(mCompletions, true, true);
} else {
setSuggestions(null, false, false);
@@ -452,14 +468,33 @@ public class TranslatorInputMethodService extends InputMethodService
}
private void handleBackspace() {
final int length = mComposing.length();
if (length > 1) {
mComposing.delete(length - 1, length);
getCurrentInputConnection().setComposingText(mComposing, 1);
int wordLength = mComposingWord.length();
int textLength = mComposingText.length();
if (wordLength > 1) {
mComposingWord.delete(wordLength - 1, wordLength);
getCurrentInputConnection().setComposingText(getComposingString(), 1);
updateCandidates();
} else if (length > 0) {
mComposing.setLength(0);
getCurrentInputConnection().commitText("", 0);
} else if (wordLength > 0) {
mComposingWord.setLength(0);
getCurrentInputConnection().setComposingText(getComposingString(), 1);
updateCandidates();
} else if (textLength > 0) {
if (mComposingText.charAt(textLength - 1) == ' ') {
mComposingText.delete(textLength - 1, textLength);
getCurrentInputConnection().setComposingText(getComposingString(), 1);
} else {
mComposingText.delete(textLength - 1, textLength);
textLength--;
int index = mComposingText.lastIndexOf(" ");
if (index == -1) {
mComposingWord.append(mComposingText.toString());
mComposingText.setLength(0);
} else {
mComposingWord.append(mComposingText.substring(index+1, textLength));
mComposingText.delete(index+1, textLength);
}
getCurrentInputConnection().setComposingText(getComposingString(), 1);
}
updateCandidates();
} else {
keyDownUp(KeyEvent.KEYCODE_DEL);
@@ -488,25 +523,29 @@ public class TranslatorInputMethodService extends InputMethodService
mSymbolsPage1Keyboard.setShifted(false);
}
}
private String getComposingString() {
return mComposingText.toString() + mComposingWord.toString();
}
private void handleCharacter(int primaryCode, int[] keyCodes) {
if (keyCodes.length > 0 && keyCodes[0] > 0) {
for (int i = 0; i < keyCodes.length && keyCodes[i] > 0; i++) {
int code = keyCodes[i];
if (mInputView.isShifted())
code = Character.toUpperCase(code);
mComposing.append((char) code);
mComposingWord.append((char) code);
}
} else {
if (mInputView.isShifted())
primaryCode = Character.toUpperCase(primaryCode);
mComposing.append((char) primaryCode);
mComposingWord.append((char) primaryCode);
}
if (primaryCode == 10)
commitTyped(getCurrentInputConnection());
else
getCurrentInputConnection().setComposingText(mComposing, 1);
getCurrentInputConnection().setComposingText(getComposingString(), 1);
updateShiftKeyState(getCurrentInputEditorInfo());
if (mPredictionOn) {
@@ -586,8 +625,8 @@ public class TranslatorInputMethodService extends InputMethodService
if (mCompletionOn)
getCurrentInputConnection().commitCompletion(ci);
else {
mComposing.setLength(0);
mComposing.append(ci.getText());
mComposingWord.setLength(0);
mComposingWord.append(ci.getText());
commitTyped(getCurrentInputConnection());
}