LatinIME/java/src/com/android/inputmethod/keyboard/internal/DrawingHandler.java

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/*
* Copyright (C) 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.inputmethod.keyboard.internal;
import android.os.Message;
import com.android.inputmethod.keyboard.Key;
import com.android.inputmethod.keyboard.internal.DrawingHandler.Callbacks;
import com.android.inputmethod.latin.SuggestedWords;
import com.android.inputmethod.latin.utils.LeakGuardHandlerWrapper;
// TODO: Separate this class into KeyPreviewHandler and BatchInputPreviewHandler or so.
public class DrawingHandler extends LeakGuardHandlerWrapper<Callbacks> {
public interface Callbacks {
public void dismissKeyPreviewWithoutDelay(Key key);
public void dismissAllKeyPreviews();
public void showGestureFloatingPreviewText(SuggestedWords suggestedWords);
}
private static final int MSG_DISMISS_KEY_PREVIEW = 0;
private static final int MSG_DISMISS_GESTURE_FLOATING_PREVIEW_TEXT = 1;
public DrawingHandler(final Callbacks ownerInstance) {
super(ownerInstance);
}
@Override
public void handleMessage(final Message msg) {
final Callbacks callbacks = getOwnerInstance();
if (callbacks == null) {
return;
}
switch (msg.what) {
case MSG_DISMISS_KEY_PREVIEW:
callbacks.dismissKeyPreviewWithoutDelay((Key)msg.obj);
break;
case MSG_DISMISS_GESTURE_FLOATING_PREVIEW_TEXT:
callbacks.showGestureFloatingPreviewText(SuggestedWords.EMPTY);
break;
}
}
public void dismissKeyPreview(final long delay, final Key key) {
sendMessageDelayed(obtainMessage(MSG_DISMISS_KEY_PREVIEW, key), delay);
}
private void cancelAllDismissKeyPreviews() {
removeMessages(MSG_DISMISS_KEY_PREVIEW);
final Callbacks callbacks = getOwnerInstance();
if (callbacks == null) {
return;
}
callbacks.dismissAllKeyPreviews();
}
public void dismissGestureFloatingPreviewText(final long delay) {
sendMessageDelayed(obtainMessage(MSG_DISMISS_GESTURE_FLOATING_PREVIEW_TEXT), delay);
}
public void cancelAllMessages() {
cancelAllDismissKeyPreviews();
}
}