Implement ComboView for Bookmarks, History and SavedPages

 - Replaces ComboViewActivity for PhoneUi.
 - Lives as part of the BrowserActivity's ViewTree.
 - Avoids construction of ComboViewActivity everytime the bookmarks screen is opened.

Change-Id: Ic7042de731a4cc2107a297c9f7d4356bc2c30f2e
diff --git a/src/com/android/browser/BaseUi.java b/src/com/android/browser/BaseUi.java
index fbaaad1..24435b4 100644
--- a/src/com/android/browser/BaseUi.java
+++ b/src/com/android/browser/BaseUi.java
@@ -589,6 +589,10 @@
     }
 
     @Override
+    public void hideComboView() {
+    }
+
+    @Override
     public void showCustomView(View view, int requestedOrientation,
             CustomViewCallback callback) {
         // if a view already exists then immediately terminate the new one
@@ -637,6 +641,11 @@
         return mCustomView == null;
     }
 
+    @Override
+    public boolean isComboViewShowing() {
+        return false;
+    }
+
     // -------------------------------------------------------------------------
 
     protected void updateNavigationState(Tab tab) {
diff --git a/src/com/android/browser/BrowserActivity.java b/src/com/android/browser/BrowserActivity.java
index 531a1c7..9b310e2 100644
--- a/src/com/android/browser/BrowserActivity.java
+++ b/src/com/android/browser/BrowserActivity.java
@@ -16,6 +16,7 @@
 
 package com.android.browser;
 
+import android.app.ActionBar;
 import android.app.Activity;
 import android.app.KeyguardManager;
 import android.content.Context;
@@ -98,6 +99,11 @@
             return;
         }
 
+        if (!isTablet(this)) {
+            final ActionBar bar = getActionBar();
+            bar.hide();
+        }
+
         // If this was a web search request, pass it on to the default web
         // search provider and finish this activity.
         /*
@@ -342,6 +348,10 @@
 
     @Override
     public boolean onOptionsItemSelected(MenuItem item) {
+        if (item.getItemId() == android.R.id.home) {
+            mUiController.getUi().hideComboView();
+            return true;
+        }
         if (!mController.onOptionsItemSelected(item)) {
             return super.onOptionsItemSelected(item);
         }
diff --git a/src/com/android/browser/BrowserBookmarksPage.java b/src/com/android/browser/BrowserBookmarksPage.java
index 3fea1ed..d026b09 100644
--- a/src/com/android/browser/BrowserBookmarksPage.java
+++ b/src/com/android/browser/BrowserBookmarksPage.java
@@ -353,6 +353,13 @@
             mCallbacks = new CombinedBookmarksCallbackWrapper(
                     (CombinedBookmarksCallbacks) getActivity());
         }
+        if (mCallbacks == null) {
+            View cb = getActivity().getWindow().getDecorView().findViewById(R.id.combo_view_container);
+            if (cb != null && cb instanceof CombinedBookmarksCallbacks) {
+                mCallbacks = new CombinedBookmarksCallbackWrapper(
+                        (CombinedBookmarksCallbacks) cb);
+            }
+        }
     }
 
     @Override
diff --git a/src/com/android/browser/BrowserHistoryPage.java b/src/com/android/browser/BrowserHistoryPage.java
index 271141c..e2c831b 100644
--- a/src/com/android/browser/BrowserHistoryPage.java
+++ b/src/com/android/browser/BrowserHistoryPage.java
@@ -201,7 +201,14 @@
         mDisableNewWindow = args.getBoolean(BrowserBookmarksPage.EXTRA_DISABLE_WINDOW, false);
         int mvlimit = getResources().getInteger(R.integer.most_visits_limit);
         mMostVisitsLimit = Integer.toString(mvlimit);
-        mCallback = (CombinedBookmarksCallbacks) getActivity();
+        if (mCallback == null && getActivity() instanceof CombinedBookmarksCallbacks) {
+            mCallback = (CombinedBookmarksCallbacks) getActivity();
+        } else {
+            View cb = getActivity().getWindow().getDecorView().findViewById(R.id.combo_view_container);
+            if (cb != null && cb instanceof CombinedBookmarksCallbacks) {
+                mCallback = (CombinedBookmarksCallbacks) cb;
+            }
+        }
     }
 
     @Override
diff --git a/src/com/android/browser/BrowserSnapshotPage.java b/src/com/android/browser/BrowserSnapshotPage.java
index 5d2453b..e2194d1 100644
--- a/src/com/android/browser/BrowserSnapshotPage.java
+++ b/src/com/android/browser/BrowserSnapshotPage.java
@@ -85,7 +85,14 @@
     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-        mCallback = (CombinedBookmarksCallbacks) getActivity();
+        if (mCallback == null && getActivity() instanceof CombinedBookmarksCallbacks) {
+            mCallback = (CombinedBookmarksCallbacks) getActivity();
+        } else {
+            View cb = getActivity().getWindow().getDecorView().findViewById(R.id.combo_view_container);
+            if (cb != null && cb instanceof CombinedBookmarksCallbacks) {
+                mCallback = (CombinedBookmarksCallbacks) cb;
+            }
+        }
         mAnimateId = getArguments().getLong(EXTRA_ANIMATE_ID);
     }
 
diff --git a/src/com/android/browser/ComboTabsAdapter.java b/src/com/android/browser/ComboTabsAdapter.java
index 5ce20fc..f73a88c 100644
--- a/src/com/android/browser/ComboTabsAdapter.java
+++ b/src/com/android/browser/ComboTabsAdapter.java
@@ -1,4 +1,5 @@
 /*
+ * Copyright (c) 2015, The Linux Foundation. All rights reserved.
  * Copyright (C) 2011 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ -13,6 +14,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package com.android.browser;
 
 import android.app.ActionBar;
@@ -20,147 +22,25 @@
 import android.app.Fragment;
 import android.app.FragmentTransaction;
 import android.content.Context;
-import android.content.Intent;
-import android.net.Uri;
 import android.os.Bundle;
 import android.support.v13.app.FragmentPagerAdapter;
 import android.support.v4.view.ViewPager;
-import android.view.Menu;
-import android.view.MenuItem;
-
-import com.android.browser.UI.ComboViews;
 
 import java.util.ArrayList;
 
-public class ComboViewActivity extends Activity implements CombinedBookmarksCallbacks {
-
-    private static final String STATE_SELECTED_TAB = "tab";
-    public static final String EXTRA_COMBO_ARGS = "combo_args";
-    public static final String EXTRA_INITIAL_VIEW = "initial_view";
-
-    public static final String EXTRA_OPEN_SNAPSHOT = "snapshot_id";
-    public static final String EXTRA_OPEN_ALL = "open_all";
-    public static final String EXTRA_CURRENT_URL = "url";
-    private ViewPager mViewPager;
-    private TabsAdapter mTabsAdapter;
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        setResult(RESULT_CANCELED);
-        Bundle extras = getIntent().getExtras();
-        Bundle args = extras.getBundle(EXTRA_COMBO_ARGS);
-        String svStr = extras.getString(EXTRA_INITIAL_VIEW, null);
-        ComboViews startingView = svStr != null
-                ? ComboViews.valueOf(svStr)
-                : ComboViews.Bookmarks;
-        mViewPager = new ViewPager(this);
-        mViewPager.setId(R.id.tab_view);
-        setContentView(mViewPager);
-
-        final ActionBar bar = getActionBar();
-        bar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
-        if (BrowserActivity.isTablet(this)) {
-            bar.setDisplayOptions(ActionBar.DISPLAY_SHOW_HOME
-                    | ActionBar.DISPLAY_USE_LOGO);
-            bar.setHomeButtonEnabled(true);
-        } else {
-            bar.setDisplayOptions(0);
-        }
-
-        mTabsAdapter = new TabsAdapter(this, mViewPager);
-        mTabsAdapter.addTab(bar.newTab().setText(R.string.tab_bookmarks),
-                BrowserBookmarksPage.class, args);
-        mTabsAdapter.addTab(bar.newTab().setText(R.string.tab_history),
-                BrowserHistoryPage.class, args);
-        mTabsAdapter.addTab(bar.newTab().setText(R.string.tab_snapshots),
-                BrowserSnapshotPage.class, args);
-
-        if (savedInstanceState != null) {
-            bar.setSelectedNavigationItem(
-                    savedInstanceState.getInt(STATE_SELECTED_TAB, 0));
-        } else {
-            switch (startingView) {
-            case Bookmarks:
-                mViewPager.setCurrentItem(0);
-                break;
-            case History:
-                mViewPager.setCurrentItem(1);
-                break;
-            case Snapshots:
-                mViewPager.setCurrentItem(2);
-                break;
-            }
-        }
-    }
-
-    @Override
-    protected void onSaveInstanceState(Bundle outState) {
-        super.onSaveInstanceState(outState);
-        outState.putInt(STATE_SELECTED_TAB,
-                getActionBar().getSelectedNavigationIndex());
-    }
-
-    @Override
-    public void openUrl(String url) {
-        Intent i = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
-        setResult(RESULT_OK, i);
-        finish();
-    }
-
-    @Override
-    public void openInNewTab(String... urls) {
-        Intent i = new Intent();
-        i.putExtra(EXTRA_OPEN_ALL, urls);
-        setResult(RESULT_OK, i);
-        finish();
-    }
-
-    @Override
-    public void close() {
-        finish();
-    }
-
-    @Override
-    public void openSnapshot(long id) {
-        Intent i = new Intent();
-        i.putExtra(EXTRA_OPEN_SNAPSHOT, id);
-        setResult(RESULT_OK, i);
-        finish();
-    }
-
-    @Override
-    public boolean onCreateOptionsMenu(Menu menu) {
-        getMenuInflater().inflate(R.menu.combined, menu);
-        return super.onCreateOptionsMenu(menu);
-    }
-
-    @Override
-    public boolean onOptionsItemSelected(MenuItem item) {
-        if (item.getItemId() == android.R.id.home) {
-            finish();
-            return true;
-        } else if (item.getItemId() == R.id.preferences_menu_id) {
-            String url = getIntent().getStringExtra(EXTRA_CURRENT_URL);
-            BrowserPreferencesPage.startPreferencesForResult(this, url, Controller.PREFERENCES_PAGE);
-            return true;
-        }
-        return super.onOptionsItemSelected(item);
-    }
-
-    /**
-     * This is a helper class that implements the management of tabs and all
-     * details of connecting a ViewPager with associated TabHost.  It relies on a
-     * trick.  Normally a tab host has a simple API for supplying a View or
-     * Intent that each tab will show.  This is not sufficient for switching
-     * between pages.  So instead we make the content part of the tab host
-     * 0dp high (it is not shown) and the TabsAdapter supplies its own dummy
-     * view to show as the tab content.  It listens to changes in tabs, and takes
-     * care of switch to the correct page in the ViewPager whenever the selected
-     * tab changes.
-     */
-    public static class TabsAdapter extends FragmentPagerAdapter
-            implements ActionBar.TabListener, ViewPager.OnPageChangeListener {
+/**
+ * This is a helper class that implements the management of tabs and all
+ * details of connecting a ViewPager with associated TabHost.  It relies on a
+ * trick.  Normally a tab host has a simple API for supplying a View or
+ * Intent that each tab will show.  This is not sufficient for switching
+ * between pages.  So instead we make the content part of the tab host
+ * 0dp high (it is not shown) and the TabsAdapter supplies its own dummy
+ * view to show as the tab content.  It listens to changes in tabs, and takes
+ * care of switch to the correct page in the ViewPager whenever the selected
+ * tab changes.
+ */
+public class ComboTabsAdapter extends FragmentPagerAdapter
+    implements ActionBar.TabListener, ViewPager.OnPageChangeListener {
         private final Context mContext;
         private final ActionBar mActionBar;
         private final ViewPager mViewPager;
@@ -176,7 +56,7 @@
             }
         }
 
-        public TabsAdapter(Activity activity, ViewPager pager) {
+        public ComboTabsAdapter(Activity activity, ViewPager pager) {
             super(activity.getFragmentManager());
             mContext = activity;
             mActionBar = activity.getActionBar();
@@ -185,63 +65,58 @@
             mViewPager.setOnPageChangeListener(this);
         }
 
-        public void addTab(ActionBar.Tab tab, Class<?> clss, Bundle args) {
-            TabInfo info = new TabInfo(clss, args);
-            tab.setTag(info);
-            tab.setTabListener(this);
-            mTabs.add(info);
-            mActionBar.addTab(tab);
-            notifyDataSetChanged();
-        }
+    public void addTab(ActionBar.Tab tab, Class<?> clss, Bundle args) {
+        TabInfo info = new TabInfo(clss, args);
+        tab.setTag(info);
+        tab.setTabListener(this);
+        mTabs.add(info);
+        mActionBar.addTab(tab);
+        notifyDataSetChanged();
+    }
 
-        @Override
-        public int getCount() {
-            return mTabs.size();
-        }
+    @Override
+    public int getCount() {
+        return mTabs.size();
+    }
 
-        @Override
-        public Fragment getItem(int position) {
-            TabInfo info = mTabs.get(position);
-            return Fragment.instantiate(mContext, info.clss.getName(), info.args);
-        }
+    @Override
+    public Fragment getItem(int position) {
+        TabInfo info = mTabs.get(position);
+        return Fragment.instantiate(mContext, info.clss.getName(), info.args);
+    }
 
-        @Override
-        public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
-        }
+    @Override
+    public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
+    }
 
-        @Override
-        public void onPageSelected(int position) {
-            mActionBar.setSelectedNavigationItem(position);
-        }
+    @Override
+    public void onPageSelected(int position) {
+        mActionBar.setSelectedNavigationItem(position);
+    }
 
-        @Override
-        public void onPageScrollStateChanged(int state) {
-        }
+    @Override
+    public void onPageScrollStateChanged(int state) {
+    }
 
-        @Override
-        public void onTabSelected(android.app.ActionBar.Tab tab,
-                FragmentTransaction ft) {
-            Object tag = tab.getTag();
-            for (int i=0; i<mTabs.size(); i++) {
-                if (mTabs.get(i) == tag) {
-                    mViewPager.setCurrentItem(i);
-                }
+    @Override
+    public void onTabSelected(android.app.ActionBar.Tab tab,
+                              FragmentTransaction ft) {
+        Object tag = tab.getTag();
+        for (int i=0; i<mTabs.size(); i++) {
+            if (mTabs.get(i) == tag) {
+                mViewPager.setCurrentItem(i);
             }
         }
-
-        @Override
-        public void onTabUnselected(android.app.ActionBar.Tab tab,
-                FragmentTransaction ft) {
-        }
-
-        @Override
-        public void onTabReselected(android.app.ActionBar.Tab tab,
-                FragmentTransaction ft) {
-        }
     }
 
-    private static String makeFragmentName(int viewId, int index) {
-        return "android:switcher:" + viewId + ":" + index;
+    @Override
+    public void onTabUnselected(android.app.ActionBar.Tab tab,
+                                FragmentTransaction ft) {
     }
 
+    @Override
+    public void onTabReselected(android.app.ActionBar.Tab tab,
+                                FragmentTransaction ft) {
+    }
 }
+
diff --git a/src/com/android/browser/ComboView.java b/src/com/android/browser/ComboView.java
index 5ce20fc..01ff54f 100644
--- a/src/com/android/browser/ComboView.java
+++ b/src/com/android/browser/ComboView.java
@@ -1,4 +1,5 @@
 /*
+ * Copyright (c) 2015, The Linux Foundation. All rights reserved.
  * Copyright (C) 2011 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ -13,235 +14,247 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package com.android.browser;
 
 import android.app.ActionBar;
 import android.app.Activity;
-import android.app.Fragment;
-import android.app.FragmentTransaction;
 import android.content.Context;
 import android.content.Intent;
 import android.net.Uri;
 import android.os.Bundle;
-import android.support.v13.app.FragmentPagerAdapter;
 import android.support.v4.view.ViewPager;
-import android.view.Menu;
-import android.view.MenuItem;
+import android.util.AttributeSet;
+import android.view.View;
+import android.view.ViewGroup;
+import android.view.animation.AnimationSet;
+import android.view.animation.AnimationUtils;
+import android.widget.HorizontalScrollView;
+import android.widget.LinearLayout;
 
 import com.android.browser.UI.ComboViews;
 
-import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.Set;
 
-public class ComboViewActivity extends Activity implements CombinedBookmarksCallbacks {
+public class ComboView extends LinearLayout implements CombinedBookmarksCallbacks, View.OnLayoutChangeListener {
 
-    private static final String STATE_SELECTED_TAB = "tab";
-    public static final String EXTRA_COMBO_ARGS = "combo_args";
-    public static final String EXTRA_INITIAL_VIEW = "initial_view";
-
-    public static final String EXTRA_OPEN_SNAPSHOT = "snapshot_id";
-    public static final String EXTRA_OPEN_ALL = "open_all";
-    public static final String EXTRA_CURRENT_URL = "url";
+    private Activity mActivity;
     private ViewPager mViewPager;
-    private TabsAdapter mTabsAdapter;
+    private AnimationSet mInAnimation;
+    private AnimationSet mOutAnimation;
+    private int mActionBarContainerId;
+
+    private ComboTabsAdapter mTabsAdapter;
+    private Bundle mExtraArgs;
+
+    public ComboView(Context context) {
+        super(context);
+    }
+
+    public ComboView(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    public ComboView(Context context, AttributeSet attrs, int defStyleAttr) {
+        super(context, attrs, defStyleAttr);
+    }
+
+    public void setupViews(Activity activity) {
+        mActivity = activity;
+
+        this.setId(R.id.combo_view_container);
+
+        mViewPager = (ViewPager)this.findViewById(R.id.combo_view_pager);
+        mViewPager.setId(R.id.tab_view); // ???
+
+        mInAnimation = (AnimationSet) AnimationUtils.loadAnimation(mActivity, R.anim.combo_view_enter);
+        mOutAnimation = (AnimationSet) AnimationUtils.loadAnimation(mActivity, R.anim.combo_view_exit);
+
+        final ActionBar bar = activity.getActionBar();
+        bar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
+        bar.setDisplayOptions(0);
+
+        mActionBarContainerId = getResources().getIdentifier("action_bar_container", "id", "android");
+        ViewGroup actionBarContainer = (ViewGroup) mActivity.getWindow().getDecorView().findViewById(mActionBarContainerId);
+        if (actionBarContainer != null) {
+            actionBarContainer.addOnLayoutChangeListener(this);
+        }
+    }
+
+    private View getScrollingTabContainerView() {
+        ViewGroup actionBarContainer = (ViewGroup) mActivity.getWindow().getDecorView().findViewById(mActionBarContainerId);
+        int count = actionBarContainer.getChildCount();
+        for (int i = 0; i < count; i++) {
+            View child = actionBarContainer.getChildAt(i);
+            if (child instanceof HorizontalScrollView) {
+                return child;
+            }
+        }
+        return null;
+    }
 
     @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        setResult(RESULT_CANCELED);
-        Bundle extras = getIntent().getExtras();
-        Bundle args = extras.getBundle(EXTRA_COMBO_ARGS);
-        String svStr = extras.getString(EXTRA_INITIAL_VIEW, null);
-        ComboViews startingView = svStr != null
-                ? ComboViews.valueOf(svStr)
-                : ComboViews.Bookmarks;
-        mViewPager = new ViewPager(this);
-        mViewPager.setId(R.id.tab_view);
-        setContentView(mViewPager);
+    public void onLayoutChange(View v, int left, int top, int right, int bottom, int oldLeft, int oldTop, int oldRight, int oldBottom) {
+        if (mActivity != null) {
+            if (!isShowing()) {
+                View container = getScrollingTabContainerView();
+                if (container != null) {
+                    container.setVisibility(View.INVISIBLE);
+                }
+            }
+        }
 
-        final ActionBar bar = getActionBar();
+    }
+
+    private boolean compareArgs(Bundle b1, Bundle b2) {
+
+        if(b1.size() != b2.size()) {
+            return false;
+        }
+
+        Set<String> keys = b1.keySet();
+        Iterator<String> it = keys.iterator();
+        while (it.hasNext()) {
+            String key = it.next();
+            final Object v1 = b1.get(key);
+            final Object v2 = b2.get(key);
+            if (!b2.containsKey(key)) {
+                return false;
+            } else if (v1 == null) {
+                if (v2 != null) {
+                    return false;
+                }
+            } else if (!v1.equals(v2)) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    public void showViews(Activity activity, Bundle extras /*Bundle savedInstanceState*/) {
+        Bundle args = extras.getBundle(ComboViewActivity.EXTRA_COMBO_ARGS);
+        String svStr = extras.getString(ComboViewActivity.EXTRA_INITIAL_VIEW, null);
+        ComboViews startingView = svStr != null ? ComboViews.valueOf(svStr) : ComboViews.Bookmarks;
+
+
+        // Compare the items in args with old args and recreate the fragments if they don't match.
+        if (mExtraArgs != null && !compareArgs(mExtraArgs, args)) {
+            mTabsAdapter = null;
+        }
+
+        final ActionBar bar = activity.getActionBar();
         bar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
-        if (BrowserActivity.isTablet(this)) {
+        if (BrowserActivity.isTablet(activity)) {
             bar.setDisplayOptions(ActionBar.DISPLAY_SHOW_HOME
                     | ActionBar.DISPLAY_USE_LOGO);
-            bar.setHomeButtonEnabled(true);
+            bar.setDisplayHomeAsUpEnabled(true);
         } else {
             bar.setDisplayOptions(0);
         }
+        if (mTabsAdapter == null) {
+            mExtraArgs = args;
+            mTabsAdapter = new ComboTabsAdapter(activity, mViewPager);
+            mTabsAdapter.addTab(bar.newTab().setText(R.string.tab_bookmarks),
+                    BrowserBookmarksPage.class, args);
+            mTabsAdapter.addTab(bar.newTab().setText(R.string.tab_history),
+                    BrowserHistoryPage.class, args);
+            mTabsAdapter.addTab(bar.newTab().setText(R.string.tab_snapshots),
+                    BrowserSnapshotPage.class, args);
+        }
 
-        mTabsAdapter = new TabsAdapter(this, mViewPager);
-        mTabsAdapter.addTab(bar.newTab().setText(R.string.tab_bookmarks),
-                BrowserBookmarksPage.class, args);
-        mTabsAdapter.addTab(bar.newTab().setText(R.string.tab_history),
-                BrowserHistoryPage.class, args);
-        mTabsAdapter.addTab(bar.newTab().setText(R.string.tab_snapshots),
-                BrowserSnapshotPage.class, args);
-
-        if (savedInstanceState != null) {
+        /*if (savedInstanceState != null) {
             bar.setSelectedNavigationItem(
                     savedInstanceState.getInt(STATE_SELECTED_TAB, 0));
-        } else {
+        } else*/ {
             switch (startingView) {
-            case Bookmarks:
-                mViewPager.setCurrentItem(0);
-                break;
-            case History:
-                mViewPager.setCurrentItem(1);
-                break;
-            case Snapshots:
-                mViewPager.setCurrentItem(2);
-                break;
+                case Bookmarks:
+                    mViewPager.setCurrentItem(0);
+                    break;
+                case History:
+                    mViewPager.setCurrentItem(1);
+                    break;
+                case Snapshots:
+                    mViewPager.setCurrentItem(2);
+                    break;
+            }
+        }
+
+        if (!bar.isShowing()) {
+            View v = getScrollingTabContainerView();
+            if (v != null) {
+                v.setVisibility(View.VISIBLE);
+            }
+            bar.show();
+        }
+
+        if (!this.isShowing()) {
+            this.setVisibility(View.VISIBLE);
+            this.requestFocus();
+            if (!(BrowserActivity.isTablet(activity))) {
+                this.startAnimation(mInAnimation);
             }
         }
     }
 
-    @Override
-    protected void onSaveInstanceState(Bundle outState) {
+    public boolean isShowing() {
+        return (this.getVisibility() == View.VISIBLE);
+    }
+
+    public void hideViews() {
+        if(!(BrowserActivity.isTablet(mActivity)))
+          this.startAnimation(mOutAnimation);
+        this.setVisibility(View.INVISIBLE);
+        mActionBarContainerId = getResources().getIdentifier("action_bar_container", "id", "android");
+        ViewGroup actionBarContainer = (ViewGroup) mActivity.getWindow().getDecorView().findViewById(mActionBarContainerId);
+        if (actionBarContainer != null) {
+            actionBarContainer.removeOnLayoutChangeListener(this);
+        }
+        ActionBar actionBar = mActivity.getActionBar();
+        actionBar.hide();
+    }
+
+    //TODO: Save the selected tab on BrowserActivity's onSaveInstanceState
+    /*public void onSaveInstanceState(Bundle outState) {
         super.onSaveInstanceState(outState);
         outState.putInt(STATE_SELECTED_TAB,
                 getActionBar().getSelectedNavigationIndex());
-    }
+    }*/
 
     @Override
     public void openUrl(String url) {
         Intent i = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
-        setResult(RESULT_OK, i);
-        finish();
+        i.setClassName(getContext().getPackageName(), BrowserActivity.class.getName());
+        i.putExtra(Controller.EXTRA_REQUEST_CODE, Controller.COMBO_VIEW);
+        i.putExtra(Controller.EXTRA_RESULT_CODE, Activity.RESULT_OK);
+        this.getContext().startActivity(i);
+        hideViews();
     }
 
     @Override
     public void openInNewTab(String... urls) {
         Intent i = new Intent();
-        i.putExtra(EXTRA_OPEN_ALL, urls);
-        setResult(RESULT_OK, i);
-        finish();
+        i.putExtra(ComboViewActivity.EXTRA_OPEN_ALL, urls);
+        i.putExtra(Controller.EXTRA_REQUEST_CODE, Controller.COMBO_VIEW);
+        i.putExtra(Controller.EXTRA_RESULT_CODE, Activity.RESULT_OK);
+        i.setClassName(getContext().getPackageName(), BrowserActivity.class.getName());
+        this.getContext().startActivity(i);
+        hideViews();
     }
 
     @Override
     public void close() {
-        finish();
+        hideViews();
     }
 
     @Override
     public void openSnapshot(long id) {
         Intent i = new Intent();
-        i.putExtra(EXTRA_OPEN_SNAPSHOT, id);
-        setResult(RESULT_OK, i);
-        finish();
+        i.putExtra(ComboViewActivity.EXTRA_OPEN_SNAPSHOT, id);
+        i.putExtra(Controller.EXTRA_REQUEST_CODE, Controller.COMBO_VIEW);
+        i.putExtra(Controller.EXTRA_RESULT_CODE, Activity.RESULT_OK);
+        i.setClassName(getContext().getPackageName(), BrowserActivity.class.getName());
+        this.getContext().startActivity(i);
+        hideViews();
     }
-
-    @Override
-    public boolean onCreateOptionsMenu(Menu menu) {
-        getMenuInflater().inflate(R.menu.combined, menu);
-        return super.onCreateOptionsMenu(menu);
-    }
-
-    @Override
-    public boolean onOptionsItemSelected(MenuItem item) {
-        if (item.getItemId() == android.R.id.home) {
-            finish();
-            return true;
-        } else if (item.getItemId() == R.id.preferences_menu_id) {
-            String url = getIntent().getStringExtra(EXTRA_CURRENT_URL);
-            BrowserPreferencesPage.startPreferencesForResult(this, url, Controller.PREFERENCES_PAGE);
-            return true;
-        }
-        return super.onOptionsItemSelected(item);
-    }
-
-    /**
-     * This is a helper class that implements the management of tabs and all
-     * details of connecting a ViewPager with associated TabHost.  It relies on a
-     * trick.  Normally a tab host has a simple API for supplying a View or
-     * Intent that each tab will show.  This is not sufficient for switching
-     * between pages.  So instead we make the content part of the tab host
-     * 0dp high (it is not shown) and the TabsAdapter supplies its own dummy
-     * view to show as the tab content.  It listens to changes in tabs, and takes
-     * care of switch to the correct page in the ViewPager whenever the selected
-     * tab changes.
-     */
-    public static class TabsAdapter extends FragmentPagerAdapter
-            implements ActionBar.TabListener, ViewPager.OnPageChangeListener {
-        private final Context mContext;
-        private final ActionBar mActionBar;
-        private final ViewPager mViewPager;
-        private final ArrayList<TabInfo> mTabs = new ArrayList<TabInfo>();
-
-        static final class TabInfo {
-            private final Class<?> clss;
-            private final Bundle args;
-
-            TabInfo(Class<?> _class, Bundle _args) {
-                clss = _class;
-                args = _args;
-            }
-        }
-
-        public TabsAdapter(Activity activity, ViewPager pager) {
-            super(activity.getFragmentManager());
-            mContext = activity;
-            mActionBar = activity.getActionBar();
-            mViewPager = pager;
-            mViewPager.setAdapter(this);
-            mViewPager.setOnPageChangeListener(this);
-        }
-
-        public void addTab(ActionBar.Tab tab, Class<?> clss, Bundle args) {
-            TabInfo info = new TabInfo(clss, args);
-            tab.setTag(info);
-            tab.setTabListener(this);
-            mTabs.add(info);
-            mActionBar.addTab(tab);
-            notifyDataSetChanged();
-        }
-
-        @Override
-        public int getCount() {
-            return mTabs.size();
-        }
-
-        @Override
-        public Fragment getItem(int position) {
-            TabInfo info = mTabs.get(position);
-            return Fragment.instantiate(mContext, info.clss.getName(), info.args);
-        }
-
-        @Override
-        public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
-        }
-
-        @Override
-        public void onPageSelected(int position) {
-            mActionBar.setSelectedNavigationItem(position);
-        }
-
-        @Override
-        public void onPageScrollStateChanged(int state) {
-        }
-
-        @Override
-        public void onTabSelected(android.app.ActionBar.Tab tab,
-                FragmentTransaction ft) {
-            Object tag = tab.getTag();
-            for (int i=0; i<mTabs.size(); i++) {
-                if (mTabs.get(i) == tag) {
-                    mViewPager.setCurrentItem(i);
-                }
-            }
-        }
-
-        @Override
-        public void onTabUnselected(android.app.ActionBar.Tab tab,
-                FragmentTransaction ft) {
-        }
-
-        @Override
-        public void onTabReselected(android.app.ActionBar.Tab tab,
-                FragmentTransaction ft) {
-        }
-    }
-
-    private static String makeFragmentName(int viewId, int index) {
-        return "android:switcher:" + viewId + ":" + index;
-    }
-
 }
diff --git a/src/com/android/browser/ComboViewActivity.java b/src/com/android/browser/ComboViewActivity.java
index 5ce20fc..4e672ca 100644
--- a/src/com/android/browser/ComboViewActivity.java
+++ b/src/com/android/browser/ComboViewActivity.java
@@ -17,21 +17,15 @@
 
 import android.app.ActionBar;
 import android.app.Activity;
-import android.app.Fragment;
-import android.app.FragmentTransaction;
-import android.content.Context;
 import android.content.Intent;
 import android.net.Uri;
 import android.os.Bundle;
-import android.support.v13.app.FragmentPagerAdapter;
 import android.support.v4.view.ViewPager;
 import android.view.Menu;
 import android.view.MenuItem;
 
 import com.android.browser.UI.ComboViews;
 
-import java.util.ArrayList;
-
 public class ComboViewActivity extends Activity implements CombinedBookmarksCallbacks {
 
     private static final String STATE_SELECTED_TAB = "tab";
@@ -42,7 +36,7 @@
     public static final String EXTRA_OPEN_ALL = "open_all";
     public static final String EXTRA_CURRENT_URL = "url";
     private ViewPager mViewPager;
-    private TabsAdapter mTabsAdapter;
+    private ComboTabsAdapter mTabsAdapter;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
@@ -68,7 +62,7 @@
             bar.setDisplayOptions(0);
         }
 
-        mTabsAdapter = new TabsAdapter(this, mViewPager);
+        mTabsAdapter = new ComboTabsAdapter(this, mViewPager);
         mTabsAdapter.addTab(bar.newTab().setText(R.string.tab_bookmarks),
                 BrowserBookmarksPage.class, args);
         mTabsAdapter.addTab(bar.newTab().setText(R.string.tab_history),
@@ -148,98 +142,6 @@
         return super.onOptionsItemSelected(item);
     }
 
-    /**
-     * This is a helper class that implements the management of tabs and all
-     * details of connecting a ViewPager with associated TabHost.  It relies on a
-     * trick.  Normally a tab host has a simple API for supplying a View or
-     * Intent that each tab will show.  This is not sufficient for switching
-     * between pages.  So instead we make the content part of the tab host
-     * 0dp high (it is not shown) and the TabsAdapter supplies its own dummy
-     * view to show as the tab content.  It listens to changes in tabs, and takes
-     * care of switch to the correct page in the ViewPager whenever the selected
-     * tab changes.
-     */
-    public static class TabsAdapter extends FragmentPagerAdapter
-            implements ActionBar.TabListener, ViewPager.OnPageChangeListener {
-        private final Context mContext;
-        private final ActionBar mActionBar;
-        private final ViewPager mViewPager;
-        private final ArrayList<TabInfo> mTabs = new ArrayList<TabInfo>();
-
-        static final class TabInfo {
-            private final Class<?> clss;
-            private final Bundle args;
-
-            TabInfo(Class<?> _class, Bundle _args) {
-                clss = _class;
-                args = _args;
-            }
-        }
-
-        public TabsAdapter(Activity activity, ViewPager pager) {
-            super(activity.getFragmentManager());
-            mContext = activity;
-            mActionBar = activity.getActionBar();
-            mViewPager = pager;
-            mViewPager.setAdapter(this);
-            mViewPager.setOnPageChangeListener(this);
-        }
-
-        public void addTab(ActionBar.Tab tab, Class<?> clss, Bundle args) {
-            TabInfo info = new TabInfo(clss, args);
-            tab.setTag(info);
-            tab.setTabListener(this);
-            mTabs.add(info);
-            mActionBar.addTab(tab);
-            notifyDataSetChanged();
-        }
-
-        @Override
-        public int getCount() {
-            return mTabs.size();
-        }
-
-        @Override
-        public Fragment getItem(int position) {
-            TabInfo info = mTabs.get(position);
-            return Fragment.instantiate(mContext, info.clss.getName(), info.args);
-        }
-
-        @Override
-        public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
-        }
-
-        @Override
-        public void onPageSelected(int position) {
-            mActionBar.setSelectedNavigationItem(position);
-        }
-
-        @Override
-        public void onPageScrollStateChanged(int state) {
-        }
-
-        @Override
-        public void onTabSelected(android.app.ActionBar.Tab tab,
-                FragmentTransaction ft) {
-            Object tag = tab.getTag();
-            for (int i=0; i<mTabs.size(); i++) {
-                if (mTabs.get(i) == tag) {
-                    mViewPager.setCurrentItem(i);
-                }
-            }
-        }
-
-        @Override
-        public void onTabUnselected(android.app.ActionBar.Tab tab,
-                FragmentTransaction ft) {
-        }
-
-        @Override
-        public void onTabReselected(android.app.ActionBar.Tab tab,
-                FragmentTransaction ft) {
-        }
-    }
-
     private static String makeFragmentName(int viewId, int index) {
         return "android:switcher:" + viewId + ":" + index;
     }
diff --git a/src/com/android/browser/Controller.java b/src/com/android/browser/Controller.java
index 53c7e34..3d651d8 100644
--- a/src/com/android/browser/Controller.java
+++ b/src/com/android/browser/Controller.java
@@ -137,6 +137,8 @@
     private static final String SEND_APP_ID_EXTRA =
         "android.speech.extras.SEND_APPLICATION_ID_EXTRA";
     private static final String INCOGNITO_URI = "chrome://incognito";
+    public static final String EXTRA_REQUEST_CODE = "_fake_request_code_";
+    public static final String EXTRA_RESULT_CODE = "_fake_result_code_";
 
     // Remind switch to data connection if wifi is unavailable
     private static final int NETWORK_SWITCH_TYPE_OK = 1;
@@ -3315,8 +3317,10 @@
     public boolean onKeyDown(int keyCode, KeyEvent event) {
         if (keyCode == KeyEvent.KEYCODE_MENU && event.getRepeatCount() == 0) {
             // Hardware menu key
-            mAppMenuHandler.showAppMenu(mActivity.findViewById(R.id.taburlbar),
-                    true, false);
+            if (!mUi.isComboViewShowing()) {
+                mAppMenuHandler.showAppMenu(mActivity.findViewById(R.id.taburlbar),
+                        true, false);
+            }
             return true;
         }
 
diff --git a/src/com/android/browser/IntentHandler.java b/src/com/android/browser/IntentHandler.java
index 0e255e2..9e2bddf 100644
--- a/src/com/android/browser/IntentHandler.java
+++ b/src/com/android/browser/IntentHandler.java
@@ -63,6 +63,13 @@
     }
 
     void onNewIntent(Intent intent) {
+        int requestCode = intent.getIntExtra(Controller.EXTRA_REQUEST_CODE, -1);
+        if (requestCode >= Controller.COMBO_VIEW && requestCode <= Controller.MY_NAVIGATION) {
+            int resultCode = intent.getIntExtra(Controller.EXTRA_RESULT_CODE, Activity.RESULT_OK);
+            mController.onActivityResult(requestCode, resultCode, intent);
+            return;
+        }
+
         Tab current = mTabControl.getCurrentTab();
         // When a tab is closed on exit, the current tab index is set to -1.
         // Reset before proceed as Browser requires the current tab to be set.
diff --git a/src/com/android/browser/NavTabView.java b/src/com/android/browser/NavTabView.java
index 49bd080..0fc8dfd 100644
--- a/src/com/android/browser/NavTabView.java
+++ b/src/com/android/browser/NavTabView.java
@@ -62,7 +62,7 @@
         mClose = (ImageView) findViewById(R.id.closetab);
         mTitle = (TextView) findViewById(R.id.title);
         mTitleBar = findViewById(R.id.titlebar);
-        mImage = (ImageView) findViewById(R.id.tab_view);
+        mImage = (ImageView) findViewById(R.id.tab_preview);
     }
 
     protected boolean isClose(View v) {
diff --git a/src/com/android/browser/PhoneUi.java b/src/com/android/browser/PhoneUi.java
index e935932..c051ec0 100644
--- a/src/com/android/browser/PhoneUi.java
+++ b/src/com/android/browser/PhoneUi.java
@@ -24,6 +24,9 @@
 import android.content.Context;
 import android.graphics.Bitmap;
 import android.graphics.Matrix;
+import android.graphics.Paint;
+import android.graphics.Rect;
+import android.os.Bundle;
 import android.os.Message;
 import android.util.Log;
 import android.view.ActionMode;
@@ -32,8 +35,13 @@
 import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
+import android.view.ViewStub;
 import android.view.accessibility.AccessibilityEvent;
 import android.view.animation.DecelerateInterpolator;
+import android.webkit.ValueCallback;
+import org.codeaurora.swe.WebView;
+
+import android.widget.FrameLayout;
 import android.widget.ImageView;
 
 import com.android.browser.UrlInputView.StateListener;
@@ -50,12 +58,13 @@
 
     private NavScreen mNavScreen;
     private AnimScreen mAnimScreen;
-    private NavigationBarPhone mNavigationBar;
-    private Activity mBrowser;
+    private final NavigationBarPhone mNavigationBar;
+    private final Activity mBrowser;
     private boolean mNavScreenRequested = false;
 
     boolean mAnimating;
     boolean mShowNav = false;
+    private ComboView mComboView;
 
 
     /**
@@ -83,11 +92,42 @@
     }
 
     @Override
+    public void showComboView(ComboViews startingView, Bundle extras) {
+
+        if (mComboView == null) {
+            mNavScreen.setVisibility(View.GONE);
+            ViewStub stub = (ViewStub) mActivity.getWindow().getDecorView().findViewById(R.id.combo_view_stub);
+            mComboView = (ComboView) stub.inflate();
+            mComboView.setVisibility(View.GONE);
+            mComboView.setupViews(mActivity);
+        }
+
+        Bundle b = new Bundle();
+        b.putString(ComboViewActivity.EXTRA_INITIAL_VIEW, startingView.name());
+        b.putBundle(ComboViewActivity.EXTRA_COMBO_ARGS, extras);
+        Tab t = getActiveTab();
+        if (t != null) {
+            b.putString(ComboViewActivity.EXTRA_CURRENT_URL, t.getUrl());
+        }
+
+        mComboView.showViews(mActivity, b);
+    }
+
+    @Override
+    public void hideComboView() {
+        mComboView.hideViews();
+    }
+
+    @Override
     public boolean onBackKey() {
         if (showingNavScreen()) {
             mNavScreen.close(mUiController.getTabControl().getCurrentPosition());
             return true;
         }
+        if (showingComboView()) {
+            hideComboView();
+            return true;
+        }
         return super.onBackKey();
     }
 
@@ -95,6 +135,10 @@
         return mNavScreen != null && mNavScreen.getVisibility() == View.VISIBLE;
     }
 
+    private boolean showingComboView() {
+        return mComboView != null && mComboView.getVisibility() == View.VISIBLE;
+    }
+
     @Override
     public boolean dispatchKey(int code, KeyEvent event) {
         return false;
@@ -119,8 +163,6 @@
             }
             if (mAnimScreen == null) {
                 mAnimScreen = new AnimScreen(mActivity);
-                // initialize bitmaps
-                //mAnimScreen.set(getTitleBar(), getWebView());
             }
         }
     }
@@ -179,6 +221,13 @@
             menu.setGroupVisible(R.id.SNAPSHOT_MENU, false);
             menu.setGroupVisible(R.id.NAV_MENU, false);
         }
+
+        if (showingComboView()) {
+            menu.setGroupVisible(R.id.MAIN_MENU, false);
+            menu.setGroupEnabled(R.id.MAIN_MENU, false);
+            menu.setGroupEnabled(R.id.MAIN_SHORTCUT_MENU, false);
+        }
+
     }
 
     @Override
@@ -223,7 +272,12 @@
 
     @Override
     public boolean isWebShowing() {
-        return super.isWebShowing() && !showingNavScreen();
+        return super.isWebShowing() && !showingNavScreen() && !showingComboView();
+    }
+
+    @Override
+    public boolean isComboViewShowing() {
+        return showingComboView();
     }
 
     @Override
diff --git a/src/com/android/browser/UI.java b/src/com/android/browser/UI.java
index 172509b..1f881b1 100644
--- a/src/com/android/browser/UI.java
+++ b/src/com/android/browser/UI.java
@@ -88,6 +88,8 @@
 
     public void showComboView(ComboViews startingView, Bundle extra);
 
+    public void hideComboView();
+
     public void showCustomView(View view, int requestedOrientation,
             CustomViewCallback callback);
 
@@ -120,6 +122,8 @@
     // returns if the web page is clear of any overlays (not including sub windows)
     public boolean isWebShowing();
 
+    public boolean isComboViewShowing();
+
     public void showWeb(boolean animate);
 
     Bitmap getDefaultVideoPoster();
diff --git a/src/com/android/browser/XLargeUi.java b/src/com/android/browser/XLargeUi.java
index 603ce08..ec62a23 100644
--- a/src/com/android/browser/XLargeUi.java
+++ b/src/com/android/browser/XLargeUi.java
@@ -32,6 +32,7 @@
 import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
+import android.view.ViewStub;
 import android.webkit.WebChromeClient;
 
 import org.codeaurora.swe.WebView;
@@ -53,6 +54,7 @@
     private TabBar mTabBar;
 
     private NavigationBarTablet mNavBar;
+    private ComboView mComboView;
 
     private Handler mHandler;
 
@@ -70,13 +72,60 @@
     }
 
     private void setupActionBar() {
+        mActionBar.setHomeButtonEnabled(false);
         mActionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD);
         mActionBar.setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM);
         mActionBar.setCustomView(mTabBar);
     }
 
     public void showComboView(ComboViews startWith, Bundle extras) {
-        super.showComboView(startWith, extras);
+        if (mComboView == null) {
+            ViewStub stub = (ViewStub) mActivity.getWindow().getDecorView().findViewById(R.id.combo_view_stub);
+            mComboView = (ComboView) stub.inflate();
+            mComboView.setVisibility(View.GONE);
+            mComboView.setupViews(mActivity);
+        }
+        mNavBar.setVisibility(View.GONE);
+        if (mActionBar != null)
+            mActionBar.hide();
+        Bundle b = new Bundle();
+        b.putString(ComboViewActivity.EXTRA_INITIAL_VIEW, startWith.name());
+        b.putBundle(ComboViewActivity.EXTRA_COMBO_ARGS, extras);
+        Tab t = getActiveTab();
+        if (t != null) {
+            b.putString(ComboViewActivity.EXTRA_CURRENT_URL, t.getUrl());
+        }
+        mComboView.showViews(mActivity, b);
+    }
+
+    @Override
+    public void hideComboView() {
+        if (showingComboView()) {
+            mComboView.hideViews();
+            mActionBar = mActivity.getActionBar();
+            setupActionBar();
+            if (mActionBar != null)
+                mActionBar.show();
+            mNavBar.setVisibility(View.VISIBLE);
+        }
+    }
+
+    @Override
+    public boolean onBackKey() {
+        if (showingComboView()) {
+            hideComboView();
+            return true;
+        }
+        return super.onBackKey();
+    }
+
+    private boolean showingComboView() {
+        return mComboView != null && mComboView.getVisibility() == View.VISIBLE;
+    }
+
+    @Override
+    public boolean isComboViewShowing() {
+        return showingComboView();
     }
 
     private void checkHideActionBar() {