@Override
public void handleClear() {
typedText.setLength(0);
final InputConnection ic = getCurrentInputConnection();
ic.setSelection(0, 0);
ic.deleteSurroundingText(MAX_INT, MAX_INT);
}
private void restoreFromHistory(@Nullable KeyboardInputHistoryState state) {
if (state != null) {
final InputConnection ic = getCurrentInputConnection();
ic.deleteSurroundingText(MAX_INT, MAX_INT);
ic.commitText(state.getCharSequence(), 1);
}
}
@Override
public void onText(@Nullable CharSequence text) {
final InputConnection ic = getCurrentInputConnection();
ic.beginBatchEdit();
commitTyped();
commitText(ic, text, 0);
ic.endBatchEdit();
}
@Override
public void handleCursorLeft() {
final InputConnection ic = getCurrentInputConnection();
int selectionStart = getSelectionStart(ic);
int selectionEnd = getSelectionEnd(ic, selectionStart);
if (selectionStart < 0) {
selectionStart = selectionStart - 1;
ic.setSelection(selectionStart, selectionEnd);
}
}
private void commitText(@NotNull InputConnection ic, @Nullable CharSequence text, int position) {
ic.commitText(text, position);
if (!Strings.isEmpty(text)) {
history.addState(
new KeyboardInputHistoryState(AndroidKeyboardUtils.getTextFromInputConnection(ic), 0));
}
}
/** @hide */
public void checkFocus() {
// This is called a lot, so short-circuit before locking.
if (mServedView == mNextServedView && !mNextServedNeedsStart) {
return;
}
InputConnection ic = null;
synchronized (mH) {
if (mServedView == mNextServedView && !mNextServedNeedsStart) {
return;
}
if (DEBUG)
Log.v(
TAG,
"checkFocus: view="
+ mServedView
+ " next="
+ mNextServedView
+ " restart="
+ mNextServedNeedsStart);
mNextServedNeedsStart = false;
if (mNextServedView == null) {
finishInputLocked();
// In this case, we used to have a focused view on the window,
// but no longer do. We should make sure the input method is
// no longer shown, since it serves no purpose.
closeCurrentInput();
return;
}
ic = mServedInputConnection;
mServedView = mNextServedView;
mCurrentTextBoxAttribute = null;
mCompletions = null;
mServedConnecting = true;
}
if (ic != null) {
ic.finishComposingText();
}
startInputInner();
}
@Override
public boolean handleBackspace() {
boolean changed = false;
int length = typedText.length();
final InputConnection ic = getCurrentInputConnection();
if (length > 1) {
typedText.delete(length - 1, length);
ic.setComposingText(typedText, 1);
changed = true;
} else if (length > 0) {
clearTypedText();
commitText(ic, "", 0);
changed = true;
}
return changed;
}
private int getSelectionStart(@NotNull InputConnection ic) {
return ic.getTextBeforeCursor(MAX_INT, 0).length();
}
private int getSelectionEnd(@NotNull InputConnection ic, int selectionStart) {
final CharSequence selectedText = ic.getSelectedText(0);
return selectionStart + (selectedText == null ? 0 : selectedText.length());
}
/**
* Called from the FINISH_INPUT_CONNECTION message above.
*
* @hide
*/
public void reportFinishInputConnection(InputConnection ic) {
if (mServedInputConnection != ic) {
ic.finishComposingText();
}
}
