Controller Refactor

    Bug: 3170671
    First step towards a model/view/control design in Browser
    introduced Controller object
    started separating UI code
    represent state of the app in one place only

Change-Id: Ica387d6bde2dcf1a4993c3db0cce498cf34ff60f

1 files changed, 829 insertions, 0 deletions

diff --git a/src/com/android/browser/BaseUi.java b/src/com/android/browser/BaseUi.java
new file mode 100644
index 0000000..052c9c5
--- /dev/null
+++ b/src/com/android/browser/BaseUi.java
@@ -0,0 +1,829 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * 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.content.Context;
+import android.content.res.Configuration;
+import android.content.res.Resources;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.graphics.PixelFormat;
+import android.graphics.drawable.Drawable;
+import android.os.Bundle;
+import android.text.TextUtils;
+import android.util.Log;
+import android.view.ActionMode;
+import android.view.Gravity;
+import android.view.LayoutInflater;
+import android.view.Menu;
+import android.view.MenuItem;
+import android.view.View;
+import android.view.ViewGroup;
+import android.view.WindowManager;
+import android.webkit.WebChromeClient;
+import android.webkit.WebHistoryItem;
+import android.webkit.WebView;
+import android.widget.FrameLayout;
+import android.widget.LinearLayout;
+import android.widget.Toast;
+
+/**
+ * UI interface definitions
+ */
+public class BaseUi implements UI, WebViewFactory {
+
+    private static final String LOGTAG = "BaseUi";
+
+    private static final FrameLayout.LayoutParams COVER_SCREEN_PARAMS =
+        new FrameLayout.LayoutParams(
+        ViewGroup.LayoutParams.MATCH_PARENT,
+        ViewGroup.LayoutParams.MATCH_PARENT);
+
+    private static final FrameLayout.LayoutParams COVER_SCREEN_GRAVITY_CENTER =
+        new FrameLayout.LayoutParams(
+        ViewGroup.LayoutParams.MATCH_PARENT,
+        ViewGroup.LayoutParams.MATCH_PARENT,
+        Gravity.CENTER);
+
+    Activity mActivity;
+    UiController mUiController;
+    TabControl mTabControl;
+
+    private Drawable mSecLockIcon;
+    private Drawable mMixLockIcon;
+
+    private boolean mXLargeScreenSize;
+    private FrameLayout mBrowserFrameLayout;
+    private FrameLayout mContentView;
+    private FrameLayout mCustomViewContainer;
+    private TitleBarBase mTitleBar;
+    private TitleBarBase mFakeTitleBar;
+    private TabBar mTabBar;
+
+    private View mCustomView;
+    private WebChromeClient.CustomViewCallback mCustomViewCallback;
+
+    private CombinedBookmarkHistoryView mComboView;
+
+    private LinearLayout mErrorConsoleContainer = null;
+
+    private Toast mStopToast;
+    private ActiveTabsPage mActiveTabsPage;
+
+    // the default <video> poster
+    private Bitmap mDefaultVideoPoster;
+    // the video progress view
+    private View mVideoProgressView;
+
+    boolean mExtendedMenuOpen;
+    boolean mOptionsMenuOpen;
+
+    private boolean mActivityPaused;
+
+    public BaseUi(Activity browser, UiController controller) {
+        mActivity = browser;
+        mUiController = controller;
+        mTabControl = controller.getTabControl();
+        Resources res = mActivity.getResources();
+        mSecLockIcon = res.getDrawable(R.drawable.ic_secure);
+        mMixLockIcon = res.getDrawable(R.drawable.ic_partial_secure);
+
+
+        mXLargeScreenSize = (res.getConfiguration().screenLayout
+                & Configuration.SCREENLAYOUT_SIZE_MASK)
+                == Configuration.SCREENLAYOUT_SIZE_XLARGE;
+
+        FrameLayout frameLayout = (FrameLayout) mActivity.getWindow()
+                .getDecorView().findViewById(android.R.id.content);
+        mBrowserFrameLayout = (FrameLayout) LayoutInflater.from(mActivity)
+                .inflate(R.layout.custom_screen, null);
+        mContentView = (FrameLayout) mBrowserFrameLayout.findViewById(
+                R.id.main_content);
+        mErrorConsoleContainer = (LinearLayout) mBrowserFrameLayout
+                .findViewById(R.id.error_console);
+        mCustomViewContainer = (FrameLayout) mBrowserFrameLayout
+                .findViewById(R.id.fullscreen_custom_content);
+        frameLayout.addView(mBrowserFrameLayout, COVER_SCREEN_PARAMS);
+
+        if (mXLargeScreenSize) {
+            mTitleBar = new TitleBarXLarge(mActivity, mUiController);
+            mTitleBar.setProgress(100);
+            mFakeTitleBar = new TitleBarXLarge(mActivity, mUiController);
+            ActionBar actionBar = mActivity.getActionBar();
+            mTabBar = new TabBar(mActivity, mUiController, this);
+            actionBar.setCustomNavigationMode(mTabBar);
+        } else {
+            mTitleBar = new TitleBar(mActivity, mUiController);
+            // mTitleBar will be always be shown in the fully loaded mode on
+            // phone
+            mTitleBar.setProgress(100);
+            mFakeTitleBar = new TitleBar(mActivity, mUiController);
+        }
+    }
+
+    // webview factory
+
+    @Override
+    public WebView createWebView(boolean privateBrowsing) {
+        // Create a new WebView
+        ScrollWebView w = new ScrollWebView(mActivity, null,
+                android.R.attr.webViewStyle, privateBrowsing);
+        w.setScrollbarFadingEnabled(true);
+        w.setScrollBarStyle(View.SCROLLBARS_OUTSIDE_OVERLAY);
+        w.setMapTrackballToArrowKeys(false); // use trackball directly
+        // Enable the built-in zoom
+        w.getSettings().setBuiltInZoomControls(true);
+        if (mXLargeScreenSize) {
+            w.setScrollListener(mTabBar);
+            w.getSettings().setDisplayZoomControls(false);
+        }
+
+        // Add this WebView to the settings observer list and update the
+        // settings
+        final BrowserSettings s = BrowserSettings.getInstance();
+        s.addObserver(w.getSettings()).update(s, null);
+        return w;
+    }
+
+    void stopWebViewScrolling() {
+        ScrollWebView web = (ScrollWebView) mUiController.getCurrentWebView();
+        if (web != null) {
+            web.stopScroll();
+        }
+    }
+
+    private void cancelStopToast() {
+        if (mStopToast != null) {
+            mStopToast.cancel();
+            mStopToast = null;
+        }
+    }
+
+    // lifecycle
+
+    public void onPause() {
+        // FIXME: This removes the active tabs page and resets the menu to
+        // MAIN_MENU.  A better solution might be to do this work in onNewIntent
+        // but then we would need to save it in onSaveInstanceState and restore
+        // it in onCreate/onRestoreInstanceState
+        if (mActiveTabsPage != null) {
+            mUiController.removeActiveTabsPage(true);
+        }
+        cancelStopToast();
+        mActivityPaused = true;
+    }
+
+    public void onResume() {
+        mActivityPaused = false;
+    }
+
+    public void onDestroy() {
+        hideFakeTitleBar();
+    }
+
+    public void onConfigurationChanged(Configuration config) {
+    }
+
+    // key handling
+
+    @Override
+    public boolean onBackKey() {
+        if (mActiveTabsPage != null) {
+            // if tab page is showing, hide it
+            mUiController.removeActiveTabsPage(true);
+            return true;
+        }
+        if (mComboView != null) {
+            if (!mComboView.onBackPressed()) {
+                mUiController.removeComboView();
+            }
+            return true;
+        }
+        if (mCustomView != null) {
+            mUiController.hideCustomView();
+            return true;
+        }
+        return false;
+    }
+
+    // WebView callbacks
+
+    @Override
+    public void onPageStarted(Tab tab, String url, Bitmap favicon) {
+        if (mXLargeScreenSize) {
+            mTabBar.onPageStarted(tab, url, favicon);
+        }
+        if (tab.inForeground()) {
+            resetLockIcon(tab, url);
+            setUrlTitle(tab, url, null);
+            setFavicon(tab, favicon);
+        }
+
+    }
+
+    @Override
+    public void onPageFinished(Tab tab, String url) {
+        if (mXLargeScreenSize) {
+            mTabBar.onPageFinished(tab);
+        }
+        if (tab.inForeground()) {
+            // Reset the title and icon in case we stopped a provisional load.
+            resetTitleAndIcon(tab);
+            // Update the lock icon image only once we are done loading
+            updateLockIconToLatest(tab);
+        }
+    }
+
+    @Override
+    public void onPageStopped(Tab tab) {
+        cancelStopToast();
+        if (tab.inForeground()) {
+            mStopToast = Toast
+                    .makeText(mActivity, R.string.stopping, Toast.LENGTH_SHORT);
+            mStopToast.show();
+        }
+    }
+
+    @Override
+    public void onProgressChanged(Tab tab, int progress) {
+        if (mXLargeScreenSize) {
+            mTabBar.onProgress(tab, progress);
+        }
+        if (tab.inForeground()) {
+            mFakeTitleBar.setProgress(progress);
+            if (progress == 100) {
+                if (!mOptionsMenuOpen || !mExtendedMenuOpen) {
+                    hideFakeTitleBar();
+                }
+            } else {
+                if (!mOptionsMenuOpen || mExtendedMenuOpen) {
+                    showFakeTitleBar();
+                }
+            }
+        }
+    }
+
+    @Override
+    public void addTab(Tab tab) {
+        if (mXLargeScreenSize) {
+            mTabBar.onNewTab(tab);
+        }
+    }
+
+    @Override
+    public void setActiveTab(Tab tab) {
+        Tab current = mTabControl.getCurrentTab();
+        if ((tab != current) && (current != null)) {
+            removeTabFromContentView(current);
+        }
+        attachTabToContentView(tab);
+        setShouldShowErrorConsole(tab, mUiController.shouldShowErrorConsole());
+
+        WebView view = tab.getWebView();
+        view.setEmbeddedTitleBar(mTitleBar);
+        if (tab.isInVoiceSearchMode()) {
+            showVoiceTitleBar(tab.getVoiceDisplayTitle());
+        } else {
+            revertVoiceTitleBar(tab);
+        }
+
+        if (mXLargeScreenSize) {
+            // Request focus on the top window.
+            mTabBar.onSetActiveTab(tab);
+        }
+        resetTitleIconAndProgress(tab);
+        updateLockIconToLatest(tab);
+        tab.getTopWindow().requestFocus();
+    }
+
+    @Override
+    public void removeTab(Tab tab) {
+        if (mTabControl.getCurrentTab() == tab) {
+            removeTabFromContentView(tab);
+        }
+        if (mXLargeScreenSize) {
+            mTabBar.onRemoveTab(tab);
+        }
+    }
+
+    @Override
+    public void detachTab(Tab tab) {
+        removeTabFromContentView(tab);
+    }
+
+    @Override
+    public void attachTab(Tab tab) {
+        attachTabToContentView(tab);
+    }
+
+    private void attachTabToContentView(Tab tab) {
+        if (tab.getWebView() == null) {
+            return;
+        }
+        View container = tab.getViewContainer();
+        WebView mainView  = tab.getWebView();
+        // Attach the WebView to the container and then attach the
+        // container to the content view.
+        FrameLayout wrapper =
+                (FrameLayout) container.findViewById(R.id.webview_wrapper);
+        ViewGroup parent = (ViewGroup) mainView.getParent();
+        if (parent != wrapper) {
+            if (parent != null) {
+                Log.w(LOGTAG, "mMainView already has a parent in"
+                        + " attachTabToContentView!");
+                parent.removeView(mainView);
+            }
+            wrapper.addView(mainView);
+        } else {
+            Log.w(LOGTAG, "mMainView is already attached to wrapper in"
+                    + " attachTabToContentView!");
+        }
+        parent = (ViewGroup) container.getParent();
+        if (parent != mContentView) {
+            if (parent != null) {
+                Log.w(LOGTAG, "mContainer already has a parent in"
+                        + " attachTabToContentView!");
+                parent.removeView(container);
+            }
+            mContentView.addView(container, COVER_SCREEN_PARAMS);
+        } else {
+            Log.w(LOGTAG, "mContainer is already attached to content in"
+                    + " attachTabToContentView!");
+        }
+        mUiController.attachSubWindow(tab);
+    }
+
+    private void removeTabFromContentView(Tab tab) {
+        // Remove the container that contains the main WebView.
+        WebView mainView = tab.getWebView();
+        View container = tab.getViewContainer();
+        if (mainView == null) {
+            return;
+        }
+        // Remove the container from the content and then remove the
+        // WebView from the container. This will trigger a focus change
+        // needed by WebView.
+        FrameLayout wrapper =
+                (FrameLayout) container.findViewById(R.id.webview_wrapper);
+        wrapper.removeView(mainView);
+        mContentView.removeView(container);
+        mUiController.endActionMode();
+        mUiController.removeSubWindow(tab);
+        ErrorConsoleView errorConsole = tab.getErrorConsole(false);
+        if (errorConsole != null) {
+            mErrorConsoleContainer.removeView(errorConsole);
+        }
+        mainView.setEmbeddedTitleBar(null);
+    }
+
+    /**
+     * Remove the sub window from the content view.
+     */
+    @Override
+    public void removeSubWindow(View subviewContainer) {
+        mContentView.removeView(subviewContainer);
+        mUiController.endActionMode();
+    }
+
+    /**
+     * Attach the sub window to the content view.
+     */
+    @Override
+    public void attachSubWindow(View container) {
+        mContentView.addView(container, COVER_SCREEN_PARAMS);
+    }
+
+    void showFakeTitleBar() {
+        if (!isFakeTitleBarShowing() && mActiveTabsPage == null &&
+                !mActivityPaused) {
+            WebView mainView = mUiController.getCurrentWebView();
+            // if there is no current WebView, don't show the faked title bar;
+            if (mainView == null) {
+                return;
+            }
+            // Do not need to check for null, since the current tab will have
+            // at least a main WebView, or we would have returned above.
+            if (mUiController.isInCustomActionMode()) {
+                // Do not show the fake title bar, while a custom ActionMode
+                // (i.e. find or select) is showing.
+                return;
+            }
+            if (mXLargeScreenSize) {
+                mContentView.addView(mFakeTitleBar);
+                mTabBar.onShowTitleBar();
+            } else {
+                WindowManager manager = (WindowManager)
+                        mActivity.getSystemService(Context.WINDOW_SERVICE);
+
+                // Add the title bar to the window manager so it can receive
+                // touches
+                // while the menu is up
+                WindowManager.LayoutParams params =
+                        new WindowManager.LayoutParams(
+                                ViewGroup.LayoutParams.MATCH_PARENT,
+                                ViewGroup.LayoutParams.WRAP_CONTENT,
+                                WindowManager.LayoutParams.TYPE_APPLICATION,
+                                WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,
+                                PixelFormat.TRANSLUCENT);
+                params.gravity = Gravity.TOP;
+                boolean atTop = mainView.getScrollY() == 0;
+                params.windowAnimations = atTop ? 0 : R.style.TitleBar;
+                manager.addView(mFakeTitleBar, params);
+            }
+        }
+    }
+
+    void hideFakeTitleBar() {
+        if (!isFakeTitleBarShowing()) return;
+        if (mXLargeScreenSize) {
+            mContentView.removeView(mFakeTitleBar);
+            mTabBar.onHideTitleBar();
+        } else {
+            WindowManager.LayoutParams params =
+                    (WindowManager.LayoutParams) mFakeTitleBar.getLayoutParams();
+            WebView mainView = mUiController.getCurrentWebView();
+            // Although we decided whether or not to animate based on the
+            // current
+            // scroll position, the scroll position may have changed since the
+            // fake title bar was displayed. Make sure it has the appropriate
+            // animation/lack thereof before removing.
+            params.windowAnimations =
+                    mainView != null && mainView.getScrollY() == 0 ?
+                            0 : R.style.TitleBar;
+            WindowManager manager = (WindowManager) mActivity
+                    .getSystemService(Context.WINDOW_SERVICE);
+            manager.updateViewLayout(mFakeTitleBar, params);
+            manager.removeView(mFakeTitleBar);
+        }
+    }
+
+    boolean isFakeTitleBarShowing() {
+        return (mFakeTitleBar.getParent() != null);
+    }
+
+    @Override
+    public void showComboView(boolean startWithHistory, Bundle extras) {
+        mComboView = new CombinedBookmarkHistoryView(mActivity,
+                mUiController,
+                startWithHistory ?
+                        CombinedBookmarkHistoryView.FRAGMENT_ID_HISTORY
+                        : CombinedBookmarkHistoryView.FRAGMENT_ID_BOOKMARKS,
+                extras);
+        mTitleBar.setVisibility(View.GONE);
+        hideFakeTitleBar();
+        mContentView.addView(mComboView, COVER_SCREEN_PARAMS);
+    }
+
+    /**
+     * dismiss the ComboPage
+     */
+    @Override
+    public void hideComboView() {
+        if (mComboView != null) {
+            mContentView.removeView(mComboView);
+            mTitleBar.setVisibility(View.VISIBLE);
+            mComboView = null;
+        }
+    }
+
+    @Override
+    public void showCustomView(View view,
+            WebChromeClient.CustomViewCallback callback) {
+        // if a view already exists then immediately terminate the new one
+        if (mCustomView != null) {
+            callback.onCustomViewHidden();
+            return;
+        }
+
+        // Add the custom view to its container.
+        mCustomViewContainer.addView(view, COVER_SCREEN_GRAVITY_CENTER);
+        mCustomView = view;
+        mCustomViewCallback = callback;
+        // Hide the content view.
+        mContentView.setVisibility(View.GONE);
+        // Finally show the custom view container.
+        setStatusBarVisibility(false);
+        mCustomViewContainer.setVisibility(View.VISIBLE);
+        mCustomViewContainer.bringToFront();
+    }
+
+    @Override
+    public void onHideCustomView() {
+        if (mCustomView == null)
+            return;
+
+        // Hide the custom view.
+        mCustomView.setVisibility(View.GONE);
+        // Remove the custom view from its container.
+        mCustomViewContainer.removeView(mCustomView);
+        mCustomView = null;
+        mCustomViewContainer.setVisibility(View.GONE);
+        mCustomViewCallback.onCustomViewHidden();
+        // Show the content view.
+        setStatusBarVisibility(true);
+        mContentView.setVisibility(View.VISIBLE);
+    }
+
+    @Override
+    public boolean isCustomViewShowing() {
+        return mCustomView != null;
+    }
+
+    @Override
+    public void showVoiceTitleBar(String title) {
+        mTitleBar.setInVoiceMode(true);
+        mTitleBar.setDisplayTitle(title);
+        mFakeTitleBar.setInVoiceMode(true);
+        mFakeTitleBar.setDisplayTitle(title);
+    }
+
+    @Override
+    public void revertVoiceTitleBar(Tab tab) {
+        mTitleBar.setInVoiceMode(false);
+        String url = tab.getCurrentUrl();
+        mTitleBar.setDisplayTitle(url);
+        mFakeTitleBar.setInVoiceMode(false);
+        mFakeTitleBar.setDisplayTitle(url);
+    }
+
+    // -------------------------------------------------------------------------
+
+    @Override
+    public void resetTitleAndRevertLockIcon(Tab tab) {
+        tab.revertLockIcon();
+        updateLockIconToLatest(tab);
+        resetTitleIconAndProgress(tab);
+    }
+
+    /**
+     * Resets the lock icon. This method is called when we start a new load and
+     * know the url to be loaded.
+     */
+    private void resetLockIcon(Tab tab, String url) {
+        // Save the lock-icon state (we revert to it if the load gets cancelled)
+        tab.resetLockIcon(url);
+        updateLockIconImage(Tab.LOCK_ICON_UNSECURE);
+    }
+
+    /**
+     * Update the lock icon to correspond to our latest state.
+     */
+    private void updateLockIconToLatest(Tab t) {
+        if (t != null) {
+            updateLockIconImage(t.getLockIconType());
+        }
+    }
+
+    /**
+     * Reset the title, favicon, and progress.
+     */
+    private void resetTitleIconAndProgress(Tab tab) {
+        WebView current = tab.getWebView();
+        if (current == null) {
+            return;
+        }
+        resetTitleAndIcon(current);
+        int progress = current.getProgress();
+        current.getWebChromeClient().onProgressChanged(current, progress);
+    }
+
+    @Override
+    public void resetTitleAndIcon(Tab tab) {
+        WebView current = tab.getWebView();
+        if (current != null) {
+            resetTitleAndIcon(current);
+        }
+    }
+
+    // Reset the title and the icon based on the given item.
+    private void resetTitleAndIcon(WebView view) {
+        WebHistoryItem item = view.copyBackForwardList().getCurrentItem();
+        Tab tab = mTabControl.getTabFromView(view);
+        if (item != null) {
+            setUrlTitle(tab, item.getUrl(), item.getTitle());
+            setFavicon(tab, item.getFavicon());
+        } else {
+            setUrlTitle(tab, null, null);
+            setFavicon(tab, null);
+        }
+    }
+
+    /**
+     * Updates the lock-icon image in the title-bar.
+     */
+    private void updateLockIconImage(int lockIconType) {
+        Drawable d = null;
+        if (lockIconType == Tab.LOCK_ICON_SECURE) {
+            d = mSecLockIcon;
+        } else if (lockIconType == Tab.LOCK_ICON_MIXED) {
+            d = mMixLockIcon;
+        }
+        mTitleBar.setLock(d);
+        mFakeTitleBar.setLock(d);
+    }
+
+    // active tabs page
+
+    public void showActiveTabsPage() {
+        mActiveTabsPage = new ActiveTabsPage(mActivity, mUiController);
+        mTitleBar.setVisibility(View.GONE);
+        hideFakeTitleBar();
+        mContentView.addView(mActiveTabsPage, COVER_SCREEN_PARAMS);
+        mActiveTabsPage.requestFocus();
+    }
+
+    /**
+     * Remove the active tabs page.
+     * @param needToAttach If true, the active tabs page did not attach a tab
+     *                     to the content view, so we need to do that here.
+     */
+    public void removeActiveTabsPage() {
+        mContentView.removeView(mActiveTabsPage);
+        mTitleBar.setVisibility(View.VISIBLE);
+        mActiveTabsPage = null;
+    }
+
+    // action mode callbacks
+
+    @Override
+    public void onActionModeStarted(ActionMode mode) {
+        // hide the fake title bar when CAB is shown
+        hideFakeTitleBar();
+    }
+
+    @Override
+    public void onActionModeFinished(boolean inLoad) {
+        if (inLoad) {
+            // the titlebar was removed when the CAB was shown
+            // if the page is loading, show it again
+            showFakeTitleBar();
+        }
+    }
+
+    // menu handling callbacks
+
+    @Override
+    public void onOptionsMenuOpened() {
+        mOptionsMenuOpen = true;
+        // options menu opened, show fake title bar
+        showFakeTitleBar();
+    }
+
+    @Override
+    public void onExtendedMenuOpened() {
+        // Switching the menu to expanded view, so hide the
+        // title bar.
+        mExtendedMenuOpen = true;
+        hideFakeTitleBar();
+    }
+
+    @Override
+    public void onOptionsMenuClosed(boolean inLoad) {
+        mOptionsMenuOpen = false;
+        if (!inLoad) {
+            hideFakeTitleBar();
+        }
+    }
+
+    @Override
+    public void onExtendedMenuClosed(boolean inLoad) {
+        mExtendedMenuOpen = false;
+        if (inLoad) {
+            showFakeTitleBar();
+        }
+    }
+
+    @Override
+    public void onContextMenuCreated(Menu menu) {
+        hideFakeTitleBar();
+    }
+
+    @Override
+    public void onContextMenuClosed(Menu menu, boolean inLoad) {
+        if (inLoad) {
+            showFakeTitleBar();
+        }
+    }
+
+    @Override
+    public void onScroll(boolean titleVisible) {
+        if (mTabBar != null) {
+            mTabBar.onScroll(titleVisible);
+        }
+    }
+
+    // error console
+
+    @Override
+    public void setShouldShowErrorConsole(Tab tab, boolean flag) {
+        ErrorConsoleView errorConsole = tab.getErrorConsole(true);
+        if (flag) {
+            // Setting the show state of the console will cause it's the layout
+            // to be inflated.
+            if (errorConsole.numberOfErrors() > 0) {
+                errorConsole.showConsole(ErrorConsoleView.SHOW_MINIMIZED);
+            } else {
+                errorConsole.showConsole(ErrorConsoleView.SHOW_NONE);
+            }
+            if (errorConsole.getParent() != null) {
+                mErrorConsoleContainer.removeView(errorConsole);
+            }
+            // Now we can add it to the main view.
+            mErrorConsoleContainer.addView(errorConsole,
+                    new LinearLayout.LayoutParams(
+                            ViewGroup.LayoutParams.MATCH_PARENT,
+                            ViewGroup.LayoutParams.WRAP_CONTENT));
+        } else {
+            mErrorConsoleContainer.removeView(errorConsole);
+        }
+    }
+
+    private void setStatusBarVisibility(boolean visible) {
+        int flag = visible ? 0 : WindowManager.LayoutParams.FLAG_FULLSCREEN;
+        mActivity.getWindow().setFlags(flag,
+                WindowManager.LayoutParams.FLAG_FULLSCREEN);
+    }
+
+    @Override
+    public void setUrlTitle(Tab tab, String url, String title) {
+        if (TextUtils.isEmpty(title)) {
+            if (TextUtils.isEmpty(url)) {
+                title = mActivity.getResources()
+                        .getString(R.string.title_bar_loading);
+            } else {
+                title = url;
+            }
+        }
+        if (tab.isInVoiceSearchMode()) return;
+        if (tab.inForeground()) {
+            mTitleBar.setDisplayTitle(url);
+            mFakeTitleBar.setDisplayTitle(url);
+        }
+        if (mXLargeScreenSize) {
+            mTabBar.onUrlAndTitle(tab, url, title);
+        }
+    }
+
+    // Set the favicon in the title bar.
+    @Override
+    public void setFavicon(Tab tab, Bitmap icon) {
+        mTitleBar.setFavicon(icon);
+        mFakeTitleBar.setFavicon(icon);
+        if (mXLargeScreenSize) {
+            mTabBar.onFavicon(tab, icon);
+        }
+    }
+    @Override
+    public boolean showsWeb() {
+        return mCustomView == null && mActiveTabsPage == null
+            && mComboView == null;
+    }
+
+    @Override
+    public void onPrepareOptionsMenu(Menu menu) {
+        if (!mXLargeScreenSize) {
+            final MenuItem newtab = menu.findItem(R.id.new_tab_menu_id);
+            newtab.setEnabled(mUiController.getTabControl().canCreateNewTab());
+        }
+    }
+
+    // -------------------------------------------------------------------------
+    // Helper function for WebChromeClient
+    // -------------------------------------------------------------------------
+
+    @Override
+    public Bitmap getDefaultVideoPoster() {
+        if (mDefaultVideoPoster == null) {
+            mDefaultVideoPoster = BitmapFactory.decodeResource(
+                    mActivity.getResources(), R.drawable.default_video_poster);
+        }
+        return mDefaultVideoPoster;
+    }
+
+    @Override
+    public View getVideoLoadingProgressView() {
+        if (mVideoProgressView == null) {
+            LayoutInflater inflater = LayoutInflater.from(mActivity);
+            mVideoProgressView = inflater.inflate(
+                    R.layout.video_loading_progress, null);
+        }
+        return mVideoProgressView;
+    }
+
+}