1/*
2 * Copyright (C) 2017 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 android.support.v17.leanback.widget;
18
19import static android.support.annotation.RestrictTo.Scope.LIBRARY_GROUP;
20
21import android.content.Context;
22import android.graphics.Rect;
23import android.support.annotation.RestrictTo;
24import android.support.v17.leanback.R;
25import android.util.AttributeSet;
26import android.view.FocusFinder;
27import android.view.KeyEvent;
28import android.view.View;
29import android.view.ViewGroup;
30import android.widget.LinearLayout;
31
32/**
33 * View for PlaybackTransportRowPresenter that has a custom focusSearch.
34 * @hide
35 */
36@RestrictTo(LIBRARY_GROUP)
37public class PlaybackTransportRowView extends LinearLayout {
38
39    /**
40     * @hide
41     */
42    @RestrictTo(LIBRARY_GROUP)
43    public interface OnUnhandledKeyListener {
44        /**
45         * Returns true if the key event should be consumed.
46         */
47        boolean onUnhandledKey(KeyEvent event);
48    }
49
50    private OnUnhandledKeyListener mOnUnhandledKeyListener;
51
52    public PlaybackTransportRowView(Context context, AttributeSet attrs) {
53        super(context, attrs);
54    }
55
56    public PlaybackTransportRowView(Context context, AttributeSet attrs, int defStyle) {
57        super(context, attrs, defStyle);
58    }
59
60    void setOnUnhandledKeyListener(OnUnhandledKeyListener listener) {
61        mOnUnhandledKeyListener = listener;
62    }
63
64    OnUnhandledKeyListener getOnUnhandledKeyListener() {
65        return mOnUnhandledKeyListener;
66    }
67
68    @Override
69    public boolean dispatchKeyEvent(KeyEvent event) {
70        if (super.dispatchKeyEvent(event)) {
71            return true;
72        }
73        return mOnUnhandledKeyListener != null && mOnUnhandledKeyListener.onUnhandledKey(event);
74    }
75
76    @Override
77    protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) {
78        final View focused = findFocus();
79        if (focused != null && focused.requestFocus(direction, previouslyFocusedRect)) {
80            return true;
81        }
82        View progress = findViewById(R.id.playback_progress);
83        if (progress != null && progress.isFocusable()) {
84            if (progress.requestFocus(direction, previouslyFocusedRect)) {
85                return true;
86            }
87        }
88        return super.onRequestFocusInDescendants(direction, previouslyFocusedRect);
89    }
90
91    @Override
92    public View focusSearch(View focused, int direction) {
93        // when focusSearch vertically, return the next immediate focusable child
94        if (focused != null) {
95            if (direction == View.FOCUS_UP) {
96                int index = indexOfChild(getFocusedChild());
97                for (index = index - 1; index >= 0; index--) {
98                    View view = getChildAt(index);
99                    if (view.hasFocusable()) {
100                        return view;
101                    }
102                }
103            } else if (direction == View.FOCUS_DOWN) {
104                int index = indexOfChild(getFocusedChild());
105                for (index = index + 1; index < getChildCount(); index++) {
106                    View view = getChildAt(index);
107                    if (view.hasFocusable()) {
108                        return view;
109                    }
110                }
111            } else if (direction == View.FOCUS_LEFT || direction == View.FOCUS_RIGHT) {
112                if (getFocusedChild() instanceof ViewGroup) {
113                    return FocusFinder.getInstance().findNextFocus(
114                            (ViewGroup) getFocusedChild(), focused, direction);
115                }
116            }
117        }
118        return super.focusSearch(focused, direction);
119    }
120
121    @Override
122    public boolean hasOverlappingRendering() {
123        return false;
124    }
125}
126