1/*
2 * Copyright (C) 2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.inputmethod.accessibility;
18
19import android.content.Context;
20import android.os.Handler;
21import android.os.Message;
22
23import com.android.inputmethod.keyboard.Key;
24import com.android.inputmethod.latin.R;
25
26// Handling long press timer to show a more keys keyboard.
27final class AccessibilityLongPressTimer extends Handler {
28    public interface LongPressTimerCallback {
29        public void performLongClickOn(Key key);
30    }
31
32    private static final int MSG_LONG_PRESS = 1;
33
34    private final LongPressTimerCallback mCallback;
35    private final long mConfigAccessibilityLongPressTimeout;
36
37    public AccessibilityLongPressTimer(final LongPressTimerCallback callback,
38            final Context context) {
39        super();
40        mCallback = callback;
41        mConfigAccessibilityLongPressTimeout = context.getResources().getInteger(
42                R.integer.config_accessibility_long_press_key_timeout);
43    }
44
45    @Override
46    public void handleMessage(final Message msg) {
47        switch (msg.what) {
48        case MSG_LONG_PRESS:
49            cancelLongPress();
50            mCallback.performLongClickOn((Key)msg.obj);
51            return;
52        default:
53            super.handleMessage(msg);
54            return;
55        }
56    }
57
58    public void startLongPress(final Key key) {
59        cancelLongPress();
60        final Message longPressMessage = obtainMessage(MSG_LONG_PRESS, key);
61        sendMessageDelayed(longPressMessage, mConfigAccessibilityLongPressTimeout);
62    }
63
64    public void cancelLongPress() {
65        removeMessages(MSG_LONG_PRESS);
66    }
67}
68