1/*
2 * Copyright (C) 2011 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.launcher3;
18
19import android.content.Context;
20import android.util.AttributeSet;
21import android.view.View;
22import android.widget.TabWidget;
23
24public class FocusOnlyTabWidget extends TabWidget {
25    public FocusOnlyTabWidget(Context context) {
26        super(context);
27    }
28
29    public FocusOnlyTabWidget(Context context, AttributeSet attrs) {
30        super(context, attrs);
31    }
32
33    public FocusOnlyTabWidget(Context context, AttributeSet attrs, int defStyle) {
34        super(context, attrs, defStyle);
35    }
36
37    public View getSelectedTab() {
38        final int count = getTabCount();
39        for (int i = 0; i < count; ++i) {
40            View v = getChildTabViewAt(i);
41            if (v.isSelected()) {
42                return v;
43            }
44        }
45        return null;
46    }
47
48    public int getChildTabIndex(View v) {
49        final int tabCount = getTabCount();
50        for (int i = 0; i < tabCount; ++i) {
51            if (getChildTabViewAt(i) == v) {
52                return i;
53            }
54        }
55        return -1;
56    }
57
58    public void setCurrentTabToFocusedTab() {
59        View tab = null;
60        int index = -1;
61        final int count = getTabCount();
62        for (int i = 0; i < count; ++i) {
63            View v = getChildTabViewAt(i);
64            if (v.hasFocus()) {
65                tab = v;
66                index = i;
67                break;
68            }
69        }
70        if (index > -1) {
71            super.setCurrentTab(index);
72            super.onFocusChange(tab, true);
73        }
74    }
75    public void superOnFocusChange(View v, boolean hasFocus) {
76        super.onFocusChange(v, hasFocus);
77    }
78
79    @Override
80    public void onFocusChange(android.view.View v, boolean hasFocus) {
81        if (v == this && hasFocus && getTabCount() > 0) {
82            getSelectedTab().requestFocus();
83            return;
84        }
85    }
86}
87