TabHost.java revision 3730bb1cd59bcfa9f5cad8361997b84113ed5923
19066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/*
29066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Copyright (C) 2006 The Android Open Source Project
39066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project *
49066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License");
59066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * you may not use this file except in compliance with the License.
69066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * You may obtain a copy of the License at
79066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project *
89066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project *      http://www.apache.org/licenses/LICENSE-2.0
99066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project *
109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Unless required by applicable law or agreed to in writing, software
119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS,
129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * See the License for the specific language governing permissions and
149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * limitations under the License.
159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */
169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpackage android.widget;
189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.app.LocalActivityManager;
209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.content.Context;
219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.content.Intent;
229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.graphics.drawable.Drawable;
239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.util.AttributeSet;
249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.KeyEvent;
259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.LayoutInflater;
269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.SoundEffectConstants;
279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.View;
289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.ViewGroup;
299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.ViewTreeObserver;
309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.Window;
319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport com.android.internal.R;
329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport java.util.ArrayList;
349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport java.util.List;
359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/**
379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Container for a tabbed window view. This object holds two children: a set of tab labels that the
389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * user clicks to select a specific tab, and a FrameLayout object that displays the contents of that
399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * page. The individual elements are typically controlled using this container object, rather than
409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * setting values on the child elements themselves.
419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */
429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpublic class TabHost extends FrameLayout implements ViewTreeObserver.OnTouchModeChangeListener {
439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    private TabWidget mTabWidget;
459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    private FrameLayout mTabContent;
469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    private List<TabSpec> mTabSpecs = new ArrayList<TabSpec>(2);
479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    /**
489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     * This field should be made private, so it is hidden from the SDK.
499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     * {@hide}
509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     */
519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    protected int mCurrentTab = -1;
529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    private View mCurrentView = null;
539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    /**
549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     * This field should be made private, so it is hidden from the SDK.
559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     * {@hide}
569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     */
579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    protected LocalActivityManager mLocalActivityManager = null;
589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    private OnTabChangeListener mOnTabChangeListener;
599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    private OnKeyListener mTabKeyListener;
609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    public TabHost(Context context) {
629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        super(context);
639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        initTabHost();
649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    }
659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    public TabHost(Context context, AttributeSet attrs) {
679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        super(context, attrs);
689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        initTabHost();
699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    }
709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
717237c56faea76d43b304562828a443ca766c3c78Romain Guy    private void initTabHost() {
729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        setFocusableInTouchMode(true);
739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        setDescendantFocusability(FOCUS_AFTER_DESCENDANTS);
749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        mCurrentTab = -1;
769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        mCurrentView = null;
779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    }
789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    /**
809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     * Get a new {@link TabSpec} associated with this tab host.
819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     * @param tag required tag of tab.
829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     */
839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    public TabSpec newTabSpec(String tag) {
849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        return new TabSpec(tag);
859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    }
869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    /**
90982be3be054960fbf254f225b4aeaee0310e619fJack Veenstra      * <p>Call setup() before adding tabs if loading TabHost using findViewById().
91982be3be054960fbf254f225b4aeaee0310e619fJack Veenstra      * <i><b>However</i></b>: You do not need to call setup() after getTabHost()
92982be3be054960fbf254f225b4aeaee0310e619fJack Veenstra      * in {@link android.app.TabActivity TabActivity}.
939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project      * Example:</p>
949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project<pre>mTabHost = (TabHost)findViewById(R.id.tabhost);
959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source ProjectmTabHost.setup();
969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source ProjectmTabHost.addTab(TAB_TAG_1, "Hello, world!", "Tab 1");
979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project      */
989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    public void setup() {
999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        mTabWidget = (TabWidget) findViewById(com.android.internal.R.id.tabs);
1009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        if (mTabWidget == null) {
1019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            throw new RuntimeException(
1029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project                    "Your TabHost must have a TabWidget whose id attribute is 'android.R.id.tabs'");
1039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        }
1043730bb1cd59bcfa9f5cad8361997b84113ed5923Evan Millar
1053730bb1cd59bcfa9f5cad8361997b84113ed5923Evan Millar        // KeyListener to attach to all tabs. Detects non-navigation keys
1069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        // and relays them to the tab content.
1079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        mTabKeyListener = new OnKeyListener() {
1089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            public boolean onKey(View v, int keyCode, KeyEvent event) {
1099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project                switch (keyCode) {
1109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project                    case KeyEvent.KEYCODE_DPAD_CENTER:
1119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project                    case KeyEvent.KEYCODE_DPAD_LEFT:
1129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project                    case KeyEvent.KEYCODE_DPAD_RIGHT:
1139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project                    case KeyEvent.KEYCODE_DPAD_UP:
1149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project                    case KeyEvent.KEYCODE_DPAD_DOWN:
1159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project                    case KeyEvent.KEYCODE_ENTER:
1169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project                        return false;
1173730bb1cd59bcfa9f5cad8361997b84113ed5923Evan Millar
1189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project                }
1199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project                mTabContent.requestFocus(View.FOCUS_FORWARD);
1209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project                return mTabContent.dispatchKeyEvent(event);
1219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            }
1223730bb1cd59bcfa9f5cad8361997b84113ed5923Evan Millar
1239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        };
1243730bb1cd59bcfa9f5cad8361997b84113ed5923Evan Millar
1259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        mTabWidget.setTabSelectionListener(new TabWidget.OnTabSelectionChanged() {
1269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            public void onTabSelectionChanged(int tabIndex, boolean clicked) {
1279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project                setCurrentTab(tabIndex);
1289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project                if (clicked) {
1299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project                    mTabContent.requestFocus(View.FOCUS_FORWARD);
1309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project                }
1319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            }
1329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        });
1339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
1349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        mTabContent = (FrameLayout) findViewById(com.android.internal.R.id.tabcontent);
1359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        if (mTabContent == null) {
1369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            throw new RuntimeException(
1373730bb1cd59bcfa9f5cad8361997b84113ed5923Evan Millar                    "Your TabHost must have a FrameLayout whose id attribute is "
1387237c56faea76d43b304562828a443ca766c3c78Romain Guy                            + "'android.R.id.tabcontent'");
1399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        }
1409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    }
1419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
1429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    /**
1439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     * If you are using {@link TabSpec#setContent(android.content.Intent)}, this
1449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     * must be called since the activityGroup is needed to launch the local activity.
1459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     *
1469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     * This is done for you if you extend {@link android.app.TabActivity}.
1479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     * @param activityGroup Used to launch activities for tab content.
1489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     */
1499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    public void setup(LocalActivityManager activityGroup) {
1509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        setup();
1519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        mLocalActivityManager = activityGroup;
1529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    }
1539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
1549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
1559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    @Override
1569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    protected void onAttachedToWindow() {
1579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        super.onAttachedToWindow();
1589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        final ViewTreeObserver treeObserver = getViewTreeObserver();
1599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        if (treeObserver != null) {
1609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            treeObserver.addOnTouchModeChangeListener(this);
1619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        }
1629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    }
1639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
1649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    @Override
1659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    protected void onDetachedFromWindow() {
1669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        super.onDetachedFromWindow();
1679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        final ViewTreeObserver treeObserver = getViewTreeObserver();
1689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        if (treeObserver != null) {
1699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            treeObserver.removeOnTouchModeChangeListener(this);
1709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        }
1719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    }
1729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
1739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    /**
1749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     * {@inheritDoc}
1759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     */
1769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    public void onTouchModeChanged(boolean isInTouchMode) {
1779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        if (!isInTouchMode) {
1789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            // leaving touch mode.. if nothing has focus, let's give it to
1799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            // the indicator of the current tab
1807237c56faea76d43b304562828a443ca766c3c78Romain Guy            if (mCurrentView != null && (!mCurrentView.hasFocus() || mCurrentView.isFocused())) {
18153175148c9b962c0ffe9cea0f3dc68bc0196e044Jack Veenstra                mTabWidget.getChildTabViewAt(mCurrentTab).requestFocus();
1829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            }
1839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        }
1849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    }
1859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
1869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    /**
1879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     * Add a tab.
1889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     * @param tabSpec Specifies how to create the indicator and content.
1899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     */
1909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    public void addTab(TabSpec tabSpec) {
1919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
1929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        if (tabSpec.mIndicatorStrategy == null) {
1939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            throw new IllegalArgumentException("you must specify a way to create the tab indicator.");
1949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        }
1959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
1969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        if (tabSpec.mContentStrategy == null) {
1979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            throw new IllegalArgumentException("you must specify a way to create the tab content");
1989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        }
1999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        View tabIndicator = tabSpec.mIndicatorStrategy.createIndicatorView();
2009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        tabIndicator.setOnKeyListener(mTabKeyListener);
20153175148c9b962c0ffe9cea0f3dc68bc0196e044Jack Veenstra
20253175148c9b962c0ffe9cea0f3dc68bc0196e044Jack Veenstra        // If this is a custom view, then do not draw the bottom strips for
20353175148c9b962c0ffe9cea0f3dc68bc0196e044Jack Veenstra        // the tab indicators.
20453175148c9b962c0ffe9cea0f3dc68bc0196e044Jack Veenstra        if (tabSpec.mIndicatorStrategy instanceof ViewIndicatorStrategy) {
20553175148c9b962c0ffe9cea0f3dc68bc0196e044Jack Veenstra            mTabWidget.setDrawBottomStrips(false);
20653175148c9b962c0ffe9cea0f3dc68bc0196e044Jack Veenstra        }
2079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        mTabWidget.addView(tabIndicator);
2089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        mTabSpecs.add(tabSpec);
2099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
2109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        if (mCurrentTab == -1) {
2119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            setCurrentTab(0);
2129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        }
2139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    }
2149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
2159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
2169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    /**
2179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     * Removes all tabs from the tab widget associated with this tab host.
2189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     */
2199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    public void clearAllTabs() {
2209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        mTabWidget.removeAllViews();
2219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        initTabHost();
2229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        mTabContent.removeAllViews();
2239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        mTabSpecs.clear();
2249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        requestLayout();
2259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        invalidate();
2269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    }
2279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
2289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    public TabWidget getTabWidget() {
2299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        return mTabWidget;
2309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    }
2319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
2329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    public int getCurrentTab() {
2339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        return mCurrentTab;
2349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    }
2359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
2369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    public String getCurrentTabTag() {
2379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        if (mCurrentTab >= 0 && mCurrentTab < mTabSpecs.size()) {
2389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            return mTabSpecs.get(mCurrentTab).getTag();
2399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        }
2409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        return null;
2419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    }
2429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
2439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    public View getCurrentTabView() {
2449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        if (mCurrentTab >= 0 && mCurrentTab < mTabSpecs.size()) {
24553175148c9b962c0ffe9cea0f3dc68bc0196e044Jack Veenstra            return mTabWidget.getChildTabViewAt(mCurrentTab);
2469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        }
2479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        return null;
2489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    }
2499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
2509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    public View getCurrentView() {
2519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        return mCurrentView;
2529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    }
2539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
2549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    public void setCurrentTabByTag(String tag) {
2559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        int i;
2569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        for (i = 0; i < mTabSpecs.size(); i++) {
2579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            if (mTabSpecs.get(i).getTag().equals(tag)) {
2589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project                setCurrentTab(i);
2599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project                break;
2609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            }
2619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        }
2629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    }
2639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
2649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    /**
2659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     * Get the FrameLayout which holds tab content
2669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     */
2679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    public FrameLayout getTabContentView() {
2689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        return mTabContent;
2699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    }
2709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
2719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    @Override
2729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    public boolean dispatchKeyEvent(KeyEvent event) {
2739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        final boolean handled = super.dispatchKeyEvent(event);
2749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
2759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        // unhandled key ups change focus to tab indicator for embedded activities
2769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        // when there is nothing that will take focus from default focus searching
2779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        if (!handled
2789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project                && (event.getAction() == KeyEvent.ACTION_DOWN)
2799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project                && (event.getKeyCode() == KeyEvent.KEYCODE_DPAD_UP)
2809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project                && (mCurrentView.isRootNamespace())
2819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project                && (mCurrentView.hasFocus())
2829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project                && (mCurrentView.findFocus().focusSearch(View.FOCUS_UP) == null)) {
28353175148c9b962c0ffe9cea0f3dc68bc0196e044Jack Veenstra            mTabWidget.getChildTabViewAt(mCurrentTab).requestFocus();
2849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            playSoundEffect(SoundEffectConstants.NAVIGATION_UP);
2859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            return true;
2869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        }
2873730bb1cd59bcfa9f5cad8361997b84113ed5923Evan Millar        return handled;
2889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    }
2899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
2909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
2919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    @Override
2929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    public void dispatchWindowFocusChanged(boolean hasFocus) {
2939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        mCurrentView.dispatchWindowFocusChanged(hasFocus);
2949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    }
2959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
2969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    public void setCurrentTab(int index) {
2979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        if (index < 0 || index >= mTabSpecs.size()) {
2989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            return;
2999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        }
3009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
3019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        if (index == mCurrentTab) {
3029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            return;
3039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        }
3049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
3059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        // notify old tab content
3069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        if (mCurrentTab != -1) {
3079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            mTabSpecs.get(mCurrentTab).mContentStrategy.tabClosed();
3089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        }
3099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
3109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        mCurrentTab = index;
3119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        final TabHost.TabSpec spec = mTabSpecs.get(index);
3129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
3139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        // Call the tab widget's focusCurrentTab(), instead of just
3149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        // selecting the tab.
3159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        mTabWidget.focusCurrentTab(mCurrentTab);
3163730bb1cd59bcfa9f5cad8361997b84113ed5923Evan Millar
3179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        // tab content
3189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        mCurrentView = spec.mContentStrategy.getContentView();
3199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
3209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        if (mCurrentView.getParent() == null) {
3219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            mTabContent
3229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project                    .addView(
3239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project                            mCurrentView,
3249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project                            new ViewGroup.LayoutParams(
3259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project                                    ViewGroup.LayoutParams.FILL_PARENT,
3269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project                                    ViewGroup.LayoutParams.FILL_PARENT));
3279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        }
3289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
3299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        if (!mTabWidget.hasFocus()) {
3309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            // if the tab widget didn't take focus (likely because we're in touch mode)
3319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            // give the current tab content view a shot
3329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            mCurrentView.requestFocus();
3339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        }
3349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
3359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        //mTabContent.requestFocus(View.FOCUS_FORWARD);
3369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        invokeOnTabChangeListener();
3379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    }
3389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
3399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    /**
3409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     * Register a callback to be invoked when the selected state of any of the items
3419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     * in this list changes
3429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     * @param l
3439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     * The callback that will run
3449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     */
3459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    public void setOnTabChangedListener(OnTabChangeListener l) {
3469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        mOnTabChangeListener = l;
3479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    }
3489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
3499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    private void invokeOnTabChangeListener() {
3509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        if (mOnTabChangeListener != null) {
3519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            mOnTabChangeListener.onTabChanged(getCurrentTabTag());
3529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        }
3539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    }
3549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
3559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    /**
3569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     * Interface definition for a callback to be invoked when tab changed
3579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     */
3589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    public interface OnTabChangeListener {
3599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        void onTabChanged(String tabId);
3609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    }
3619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
3629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
3639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    /**
3649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     * Makes the content of a tab when it is selected. Use this if your tab
3659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     * content needs to be created on demand, i.e. you are not showing an
3669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     * existing view or starting an activity.
3679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     */
3689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    public interface TabContentFactory {
3699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        /**
3709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project         * Callback to make the tab contents
3713730bb1cd59bcfa9f5cad8361997b84113ed5923Evan Millar         *
3729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project         * @param tag
3739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project         *            Which tab was selected.
374982be3be054960fbf254f225b4aeaee0310e619fJack Veenstra         * @return The view to display the contents of the selected tab.
3759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project         */
3769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        View createTabContent(String tag);
3779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    }
3789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
3799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
3809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    /**
381982be3be054960fbf254f225b4aeaee0310e619fJack Veenstra     * A tab has a tab indicator, content, and a tag that is used to keep
3829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     * track of it.  This builder helps choose among these options.
3839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     *
3849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     * For the tab indicator, your choices are:
3859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     * 1) set a label
3869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     * 2) set a label and an icon
3879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     *
3889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     * For the tab content, your choices are:
3899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     * 1) the id of a {@link View}
3909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     * 2) a {@link TabContentFactory} that creates the {@link View} content.
3919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     * 3) an {@link Intent} that launches an {@link android.app.Activity}.
3929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     */
3939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    public class TabSpec {
3949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
3959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        private String mTag;
3969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
3979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        private IndicatorStrategy mIndicatorStrategy;
3989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        private ContentStrategy mContentStrategy;
3999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
4009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        private TabSpec(String tag) {
4019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            mTag = tag;
4029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        }
4039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
4049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        /**
4059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project         * Specify a label as the tab indicator.
4069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project         */
4079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        public TabSpec setIndicator(CharSequence label) {
4089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            mIndicatorStrategy = new LabelIndicatorStrategy(label);
4099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            return this;
4109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        }
4119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
4129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        /**
4139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project         * Specify a label and icon as the tab indicator.
4149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project         */
4159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        public TabSpec setIndicator(CharSequence label, Drawable icon) {
4169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            mIndicatorStrategy = new LabelAndIconIndicatorStrategy(label, icon);
4179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            return this;
4189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        }
4199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
4209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        /**
42153175148c9b962c0ffe9cea0f3dc68bc0196e044Jack Veenstra         * Specify a view as the tab indicator.
42253175148c9b962c0ffe9cea0f3dc68bc0196e044Jack Veenstra         */
42353175148c9b962c0ffe9cea0f3dc68bc0196e044Jack Veenstra        public TabSpec setIndicator(View view) {
42453175148c9b962c0ffe9cea0f3dc68bc0196e044Jack Veenstra            mIndicatorStrategy = new ViewIndicatorStrategy(view);
42553175148c9b962c0ffe9cea0f3dc68bc0196e044Jack Veenstra            return this;
42653175148c9b962c0ffe9cea0f3dc68bc0196e044Jack Veenstra        }
42753175148c9b962c0ffe9cea0f3dc68bc0196e044Jack Veenstra
42853175148c9b962c0ffe9cea0f3dc68bc0196e044Jack Veenstra        /**
4299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project         * Specify the id of the view that should be used as the content
4309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project         * of the tab.
4319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project         */
4329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        public TabSpec setContent(int viewId) {
4339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            mContentStrategy = new ViewIdContentStrategy(viewId);
4349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            return this;
4359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        }
4369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
4379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        /**
4389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project         * Specify a {@link android.widget.TabHost.TabContentFactory} to use to
4399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project         * create the content of the tab.
4409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project         */
4419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        public TabSpec setContent(TabContentFactory contentFactory) {
4429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            mContentStrategy = new FactoryContentStrategy(mTag, contentFactory);
4439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            return this;
4449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        }
4459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
4469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        /**
4479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project         * Specify an intent to use to launch an activity as the tab content.
4489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project         */
4499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        public TabSpec setContent(Intent intent) {
4509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            mContentStrategy = new IntentContentStrategy(mTag, intent);
4519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            return this;
4529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        }
4539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
4549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
45553175148c9b962c0ffe9cea0f3dc68bc0196e044Jack Veenstra        public String getTag() {
4569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            return mTag;
4579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        }
4589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    }
4599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
4609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    /**
4619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     * Specifies what you do to create a tab indicator.
4629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     */
4639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    private static interface IndicatorStrategy {
4649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
4659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        /**
4669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project         * Return the view for the indicator.
4679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project         */
4689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        View createIndicatorView();
4699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    }
4709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
4719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    /**
4729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     * Specifies what you do to manage the tab content.
4739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     */
4749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    private static interface ContentStrategy {
4759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
4769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        /**
4779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project         * Return the content view.  The view should may be cached locally.
4789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project         */
4799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        View getContentView();
4809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
4819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        /**
4829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project         * Perhaps do something when the tab associated with this content has
4839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project         * been closed (i.e make it invisible, or remove it).
4849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project         */
4859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        void tabClosed();
4869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    }
4879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
4889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    /**
4899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     * How to create a tab indicator that just has a label.
4909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     */
4919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    private class LabelIndicatorStrategy implements IndicatorStrategy {
4929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
4939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        private final CharSequence mLabel;
4949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
4959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        private LabelIndicatorStrategy(CharSequence label) {
4969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            mLabel = label;
4979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        }
4989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
4999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        public View createIndicatorView() {
5009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            LayoutInflater inflater =
5019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project                    (LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
5029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            View tabIndicator = inflater.inflate(R.layout.tab_indicator,
5039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project                    mTabWidget, // tab widget is the parent
5049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project                    false); // no inflate params
5053730bb1cd59bcfa9f5cad8361997b84113ed5923Evan Millar            // TODO: Move this to xml when bug 2068024 is resolved.
5063730bb1cd59bcfa9f5cad8361997b84113ed5923Evan Millar            tabIndicator.getBackground().setDither(true);
5079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
5089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            final TextView tv = (TextView) tabIndicator.findViewById(R.id.title);
5099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            tv.setText(mLabel);
5109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
5119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            return tabIndicator;
5129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        }
5139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    }
5149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
5159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    /**
5169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     * How we create a tab indicator that has a label and an icon
5179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     */
5189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    private class LabelAndIconIndicatorStrategy implements IndicatorStrategy {
5199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
5209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        private final CharSequence mLabel;
5219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        private final Drawable mIcon;
5229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
5239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        private LabelAndIconIndicatorStrategy(CharSequence label, Drawable icon) {
5249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            mLabel = label;
5259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            mIcon = icon;
5269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        }
5279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
5289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        public View createIndicatorView() {
5299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            LayoutInflater inflater =
5309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project                    (LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
5319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            View tabIndicator = inflater.inflate(R.layout.tab_indicator,
5329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project                    mTabWidget, // tab widget is the parent
5339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project                    false); // no inflate params
5343730bb1cd59bcfa9f5cad8361997b84113ed5923Evan Millar            // TODO: Move this to xml when bug 2068024 is resolved.
5353730bb1cd59bcfa9f5cad8361997b84113ed5923Evan Millar            tabIndicator.getBackground().setDither(true);
5369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
5379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            final TextView tv = (TextView) tabIndicator.findViewById(R.id.title);
5389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            tv.setText(mLabel);
5399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
5409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            final ImageView iconView = (ImageView) tabIndicator.findViewById(R.id.icon);
5419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            iconView.setImageDrawable(mIcon);
5429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
5439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            return tabIndicator;
5449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        }
5459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    }
5469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
5479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    /**
54853175148c9b962c0ffe9cea0f3dc68bc0196e044Jack Veenstra     * How to create a tab indicator by specifying a view.
54953175148c9b962c0ffe9cea0f3dc68bc0196e044Jack Veenstra     */
55053175148c9b962c0ffe9cea0f3dc68bc0196e044Jack Veenstra    private class ViewIndicatorStrategy implements IndicatorStrategy {
55153175148c9b962c0ffe9cea0f3dc68bc0196e044Jack Veenstra
55253175148c9b962c0ffe9cea0f3dc68bc0196e044Jack Veenstra        private final View mView;
55353175148c9b962c0ffe9cea0f3dc68bc0196e044Jack Veenstra
55453175148c9b962c0ffe9cea0f3dc68bc0196e044Jack Veenstra        private ViewIndicatorStrategy(View view) {
55553175148c9b962c0ffe9cea0f3dc68bc0196e044Jack Veenstra            mView = view;
55653175148c9b962c0ffe9cea0f3dc68bc0196e044Jack Veenstra        }
55753175148c9b962c0ffe9cea0f3dc68bc0196e044Jack Veenstra
55853175148c9b962c0ffe9cea0f3dc68bc0196e044Jack Veenstra        public View createIndicatorView() {
55953175148c9b962c0ffe9cea0f3dc68bc0196e044Jack Veenstra            return mView;
56053175148c9b962c0ffe9cea0f3dc68bc0196e044Jack Veenstra        }
56153175148c9b962c0ffe9cea0f3dc68bc0196e044Jack Veenstra    }
56253175148c9b962c0ffe9cea0f3dc68bc0196e044Jack Veenstra
56353175148c9b962c0ffe9cea0f3dc68bc0196e044Jack Veenstra    /**
5649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     * How to create the tab content via a view id.
5659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     */
5669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    private class ViewIdContentStrategy implements ContentStrategy {
5679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
5689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        private final View mView;
5699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
5709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        private ViewIdContentStrategy(int viewId) {
5719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            mView = mTabContent.findViewById(viewId);
5729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            if (mView != null) {
5739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project                mView.setVisibility(View.GONE);
5749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            } else {
5759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project                throw new RuntimeException("Could not create tab content because " +
5769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project                        "could not find view with id " + viewId);
5779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            }
5789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        }
5799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
5809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        public View getContentView() {
5819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            mView.setVisibility(View.VISIBLE);
5829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            return mView;
5839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        }
5849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
5859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        public void tabClosed() {
5869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            mView.setVisibility(View.GONE);
5879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        }
5889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    }
5899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
5909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    /**
5919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     * How tab content is managed using {@link TabContentFactory}.
5929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     */
5939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    private class FactoryContentStrategy implements ContentStrategy {
5949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        private View mTabContent;
5959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        private final CharSequence mTag;
5969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        private TabContentFactory mFactory;
5979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
5989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        public FactoryContentStrategy(CharSequence tag, TabContentFactory factory) {
5999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            mTag = tag;
6009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            mFactory = factory;
6019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        }
6029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
6039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        public View getContentView() {
6049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            if (mTabContent == null) {
6059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project                mTabContent = mFactory.createTabContent(mTag.toString());
6069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            }
6079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            mTabContent.setVisibility(View.VISIBLE);
6089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            return mTabContent;
6099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        }
6109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
6119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        public void tabClosed() {
6129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            mTabContent.setVisibility(View.INVISIBLE);
6139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        }
6149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    }
6159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
6169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    /**
6179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     * How tab content is managed via an {@link Intent}: the content view is the
6189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     * decorview of the launched activity.
6199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project     */
6209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    private class IntentContentStrategy implements ContentStrategy {
6219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
6229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        private final String mTag;
6239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        private final Intent mIntent;
6249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
6259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        private View mLaunchedView;
6269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
6279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        private IntentContentStrategy(String tag, Intent intent) {
6289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            mTag = tag;
6299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            mIntent = intent;
6309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        }
6319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
6329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        public View getContentView() {
6339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            if (mLocalActivityManager == null) {
6349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project                throw new IllegalStateException("Did you forget to call 'public void setup(LocalActivityManager activityGroup)'?");
6359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            }
6369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            final Window w = mLocalActivityManager.startActivity(
6379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project                    mTag, mIntent);
6389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            final View wd = w != null ? w.getDecorView() : null;
6399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            if (mLaunchedView != wd && mLaunchedView != null) {
6409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project                if (mLaunchedView.getParent() != null) {
6419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project                    mTabContent.removeView(mLaunchedView);
6429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project                }
6439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            }
6449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            mLaunchedView = wd;
6453730bb1cd59bcfa9f5cad8361997b84113ed5923Evan Millar
646982be3be054960fbf254f225b4aeaee0310e619fJack Veenstra            // XXX Set FOCUS_AFTER_DESCENDANTS on embedded activities for now so they can get
6479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            // focus if none of their children have it. They need focus to be able to
6489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            // display menu items.
6499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            //
6509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            // Replace this with something better when Bug 628886 is fixed...
6519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            //
6529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            if (mLaunchedView != null) {
6539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project                mLaunchedView.setVisibility(View.VISIBLE);
6549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project                mLaunchedView.setFocusableInTouchMode(true);
6559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project                ((ViewGroup) mLaunchedView).setDescendantFocusability(
6569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project                        FOCUS_AFTER_DESCENDANTS);
6579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            }
6589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            return mLaunchedView;
6599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        }
6609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
6619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        public void tabClosed() {
6629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            if (mLaunchedView != null) {
6639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project                mLaunchedView.setVisibility(View.GONE);
6649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project            }
6659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project        }
6669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project    }
6679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project
6689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project}
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