GeckoInputConnection.java 文件源码

private boolean processKey(int keyCode, KeyEvent event, boolean down) {
    if (GamepadUtils.isSonyXperiaGamepadKeyEvent(event)) {
        event = GamepadUtils.translateSonyXperiaGamepadKeys(keyCode, event);
        keyCode = event.getKeyCode();
    }

    if (keyCode > KeyEvent.getMaxKeyCode() ||
        !shouldProcessKey(keyCode, event)) {
        return false;
    }
    final int action = down ? KeyEvent.ACTION_DOWN : KeyEvent.ACTION_UP;
    event = translateKey(keyCode, event);
    keyCode = event.getKeyCode();

    View view = getView();
    if (view == null) {
        InputThreadUtils.sInstance.sendEventFromUiThread(ThreadUtils.getUiHandler(),
            mEditableClient, GeckoEvent.createKeyEvent(event, action, 0));
        return true;
    }

    // KeyListener returns true if it handled the event for us. KeyListener is only
    // safe to use on the UI thread; therefore we need to pass a proxy Editable to it
    KeyListener keyListener = TextKeyListener.getInstance();
    Handler uiHandler = view.getRootView().getHandler();
    Editable uiEditable = InputThreadUtils.sInstance.
        getEditableForUiThread(uiHandler, mEditableClient);
    boolean skip = shouldSkipKeyListener(keyCode, event);
    if (down) {
        mEditableClient.setSuppressKeyUp(true);
    }
    if (skip ||
        (down && !keyListener.onKeyDown(view, uiEditable, keyCode, event)) ||
        (!down && !keyListener.onKeyUp(view, uiEditable, keyCode, event))) {
        InputThreadUtils.sInstance.sendEventFromUiThread(uiHandler, mEditableClient,
            GeckoEvent.createKeyEvent(event, action, TextKeyListener.getMetaState(uiEditable)));
        if (skip && down) {
            // Usually, the down key listener call above adjusts meta states for us.
            // However, if we skip that call above, we have to manually adjust meta
            // states so the meta states remain consistent
            TextKeyListener.adjustMetaAfterKeypress(uiEditable);
        }
    }
    if (down) {
        mEditableClient.setSuppressKeyUp(false);
    }
    return true;
}