AppsCustomizeTabHost.java revision 4179b4e048dd019daca053dc3a7eddf6c464b08b 
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.launcher2;
18
19import android.content.Context;
20import android.content.res.Resources;
21import android.util.AttributeSet;
22import android.view.LayoutInflater;
23import android.view.MotionEvent;
24import android.view.View;
25import android.view.ViewGroup;
26import android.widget.TabHost;
27import android.widget.TextView;
28
29import com.android.launcher.R;
30
31public class AppsCustomizeTabHost extends TabHost implements LauncherTransitionable,
32        TabHost.OnTabChangeListener  {
33    static final String LOG_TAG = "AppsCustomizeTabHost";
34
35    private static final String APPS_TAB_TAG = "APPS";
36    private static final String WIDGETS_TAB_TAG = "WIDGETS";
37    private static final String WALLPAPERS_TAB_TAG = "WALLPAPERS";
38
39    private final LayoutInflater mLayoutInflater;
40    private AppsCustomizePagedView mAppsCustomizePane;
41
42    public AppsCustomizeTabHost(Context context, AttributeSet attrs) {
43        super(context, attrs);
44        mLayoutInflater = LayoutInflater.from(context);
45    }
46
47    void selectAppsTab() {
48        setCurrentTabByTag(APPS_TAB_TAG);
49    }
50    void selectWidgetsTab() {
51        setCurrentTabByTag(WIDGETS_TAB_TAG);
52    }
53
54    /**
55     * Setup the tab host and create all necessary tabs.
56     */
57    @Override
58    protected void onFinishInflate() {
59        // Setup the tab host
60        setup();
61
62        final ViewGroup tabs = (ViewGroup) findViewById(com.android.internal.R.id.tabs);
63        final AppsCustomizePagedView appsCustomizePane = (AppsCustomizePagedView)
64                findViewById(R.id.apps_customize_pane_content);
65        mAppsCustomizePane = appsCustomizePane;
66        if (tabs == null || mAppsCustomizePane == null) throw new Resources.NotFoundException();
67
68        // Configure the tabs content factory to return the same paged view (that we change the
69        // content filter on)
70        TabContentFactory contentFactory = new TabContentFactory() {
71            public View createTabContent(String tag) {
72                return appsCustomizePane;
73            }
74        };
75
76        // Create the tabs
77        TextView tabView;
78        tabView = (TextView) mLayoutInflater.inflate(R.layout.tab_widget_indicator, tabs, false);
79        tabView.setText(mContext.getString(R.string.all_apps_button_label));
80        addTab(newTabSpec(APPS_TAB_TAG).setIndicator(tabView).setContent(contentFactory));
81        tabView = (TextView) mLayoutInflater.inflate(R.layout.tab_widget_indicator, tabs, false);
82        tabView.setText(mContext.getString(R.string.widgets_tab_label));
83        addTab(newTabSpec(WIDGETS_TAB_TAG).setIndicator(tabView).setContent(contentFactory));
84        tabView = (TextView) mLayoutInflater.inflate(R.layout.tab_widget_indicator, tabs, false);
85        tabView.setText(mContext.getString(R.string.wallpapers_tab_label));
86        addTab(newTabSpec(WALLPAPERS_TAB_TAG).setIndicator(tabView).setContent(contentFactory));
87        setOnTabChangedListener(this);
88
89        // Set the width of the tab bar to match the content (for now)
90        tabs.getLayoutParams().width = mAppsCustomizePane.getPageContentWidth();
91    }
92
93    @Override
94    public boolean onTouchEvent(MotionEvent event) {
95        // Intercept all touch events up to the bottom of the AppsCustomizePane so they do not fall
96        // through to the workspace and trigger showWorkspace()
97        if (event.getY() < mAppsCustomizePane.getBottom()) {
98            return true;
99        }
100        return super.onTouchEvent(event);
101    }
102
103    @Override
104    public void onTabChanged(String tabId) {
105        mAppsCustomizePane.setContentType(getContentTypeForTabTag(tabId));
106    }
107
108    /**
109     * Returns the content type for the specified tab tag.
110     */
111    public AppsCustomizePagedView.ContentType getContentTypeForTabTag(String tag) {
112        if (tag.equals(APPS_TAB_TAG)) {
113            return AppsCustomizePagedView.ContentType.Applications;
114        } else if (tag.equals(WIDGETS_TAB_TAG)) {
115            return AppsCustomizePagedView.ContentType.Widgets;
116        } else if (tag.equals(WALLPAPERS_TAB_TAG)) {
117            return AppsCustomizePagedView.ContentType.Wallpapers;
118        }
119        return AppsCustomizePagedView.ContentType.Applications;
120    }
121
122    /**
123     * Returns the tab tag for a given content type.
124     */
125    public String getTabTagForContentType(AppsCustomizePagedView.ContentType type) {
126        if (type == AppsCustomizePagedView.ContentType.Applications) {
127            return APPS_TAB_TAG;
128        } else if (type == AppsCustomizePagedView.ContentType.Widgets) {
129            return WIDGETS_TAB_TAG;
130        } else if (type == AppsCustomizePagedView.ContentType.Wallpapers) {
131            return WALLPAPERS_TAB_TAG;
132        }
133        return APPS_TAB_TAG;
134    }
135
136    /**
137     * Disable focus on anything under this view in the hierarchy if we are not visible.
138     */
139    @Override
140    public int getDescendantFocusability() {
141        if (getVisibility() != View.VISIBLE) {
142            return ViewGroup.FOCUS_BLOCK_DESCENDANTS;
143        }
144        return super.getDescendantFocusability();
145    }
146
147    /* LauncherTransitionable overrides */
148    @Override
149    public void onLauncherTransitionStart(android.animation.Animator animation) {
150        // TODO-APPS_CUSTOMIZE: see AllAppsTabbed.onLauncherTransitionStart();
151    }
152    @Override
153    public void onLauncherTransitionEnd(android.animation.Animator animation) {
154        // TODO-APPS_CUSTOMIZE: see AllAppsTabbed.onLauncherTransitionEnd();
155    }
156}
157