1/**
2 * Copyright (C) 2014 Google Inc.
3 * Licensed to The Android Open Source Project.
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 *      http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17package com.android.mail.ui;
18
19import android.content.Context;
20import android.util.AttributeSet;
21import android.view.MotionEvent;
22import android.widget.FrameLayout;
23
24/**
25 * Empty frame to steal events for two-pane view when the drawer is open.
26 */
27public class ConversationViewFrame extends FrameLayout {
28
29    public interface DownEventListener {
30        boolean onInterceptCVDownEvent();
31    }
32
33    private DownEventListener mDownEventListener;
34
35    public ConversationViewFrame(Context c) {
36        super(c, null);
37    }
38
39    public ConversationViewFrame(Context c, AttributeSet attrs) {
40        super(c, attrs);
41    }
42
43    public void setDownEventListener(DownEventListener l) {
44        mDownEventListener = l;
45    }
46
47    @Override
48    public boolean onInterceptTouchEvent(MotionEvent ev) {
49        boolean steal = false;
50        if (ev.getActionMasked() == MotionEvent.ACTION_DOWN && mDownEventListener != null) {
51            steal = mDownEventListener.onInterceptCVDownEvent();
52            // just drop the event stream that follows when we steal; we closed the drawer and
53            // that's enough.
54        }
55        return steal;
56    }
57
58}
59