/*
 * Copyright (C) 2006 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.marvin.webvox;

import com.marvin.webvox.R;
//import com.google.android.googleapps.IGoogleLoginService;
//import com.google.android.googlelogin.GoogleLoginServiceConstants;

import android.app.Activity;
import android.app.AlertDialog;
import android.app.ProgressDialog;
import android.app.SearchManager;
import android.content.ActivityNotFoundException;
import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.ContentResolver;
import android.content.ContentUris;
import android.content.ContentValues;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.ServiceConnection;
import android.content.DialogInterface.OnCancelListener;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.content.res.AssetManager;
import android.content.res.Configuration;
import android.content.res.Resources;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteException;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.DrawFilter;
import android.graphics.Paint;
import android.graphics.PaintFlagsDrawFilter;
import android.graphics.Picture;
import android.graphics.PixelFormat;
import android.graphics.Rect;
import android.graphics.drawable.Drawable;
import android.hardware.SensorListener;
import android.hardware.SensorManager;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.net.Uri;
//import android.net.WebAddress;
//import android.net.http.EventHandler;
import android.net.http.SslCertificate;
//import android.net.http.SslError;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Debug;
import android.os.Environment;
import android.os.Handler;
import android.os.IBinder;
import android.os.Message;
import android.os.PowerManager;
import android.os.Process;
import android.os.RemoteException;
//import android.os.ServiceManager;
import android.os.SystemClock;
import android.provider.Browser;
import android.provider.ContactsContract;
import android.provider.ContactsContract.Intents.Insert;
//import android.provider.Downloads;
import android.provider.MediaStore;
//import android.text.IClipboard;
import android.speech.tts.TextToSpeech;
import android.text.TextUtils;
import android.text.format.DateFormat;
//import android.text.util.Regex;
import android.util.AttributeSet;
import android.util.Log;
import android.view.ContextMenu;
import android.view.Gravity;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.view.WindowManager;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.MenuItem.OnMenuItemClickListener;
import android.view.animation.AlphaAnimation;
import android.view.animation.Animation;
import android.view.animation.AnimationSet;
import android.view.animation.DecelerateInterpolator;
import android.view.animation.ScaleAnimation;
import android.view.animation.TranslateAnimation;
import android.webkit.CookieManager;
import android.webkit.CookieSyncManager;
import android.webkit.DownloadListener;
import android.webkit.GeolocationPermissions;
import android.webkit.HttpAuthHandler;
//import android.webkit.PluginManager;
import android.webkit.SslErrorHandler;
import android.webkit.URLUtil;
//import android.webkit.ValueCallback;
import android.webkit.WebChromeClient;
//import android.webkit.WebChromeClient.CustomViewCallback;
import android.webkit.WebHistoryItem;
import android.webkit.WebIconDatabase;
import android.webkit.WebStorage;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.EditText;
import android.widget.FrameLayout;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;

import java.io.BufferedOutputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;
import java.net.URLEncoder;
import java.text.ParseException;
import java.util.Date;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Vector;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;

public class BrowserActivity extends Activity
    implements View.OnCreateContextMenuListener,
        DownloadListener {

    /* Define some aliases to make these debugging flags easier to refer to.
     * This file imports android.provider.Browser, so we can't just refer to "Browser.DEBUG".
     */
    private final static boolean DEBUG = com.marvin.webvox.Browser.DEBUG;
    private final static boolean LOGV_ENABLED = com.marvin.webvox.Browser.LOGV_ENABLED;
    private final static boolean LOGD_ENABLED = com.marvin.webvox.Browser.LOGD_ENABLED;

//    private IGoogleLoginService mGls = null;
    private ServiceConnection mGlsConnection = null;

    private SensorManager mSensorManager = null;

    // These are single-character shortcuts for searching popular sources.
    private static final int SHORTCUT_INVALID = 0;
    private static final int SHORTCUT_GOOGLE_SEARCH = 1;
    private static final int SHORTCUT_WIKIPEDIA_SEARCH = 2;
    private static final int SHORTCUT_DICTIONARY_SEARCH = 3;
    private static final int SHORTCUT_GOOGLE_MOBILE_LOCAL_SEARCH = 4;

    /* Whitelisted webpages
    private static HashSet<String> sWhiteList;

    static {
        sWhiteList = new HashSet<String>();
        sWhiteList.add("cnn.com/");
        sWhiteList.add("espn.go.com/");
        sWhiteList.add("nytimes.com/");
        sWhiteList.add("engadget.com/");
        sWhiteList.add("yahoo.com/");
        sWhiteList.add("msn.com/");
        sWhiteList.add("amazon.com/");
        sWhiteList.add("consumerist.com/");
        sWhiteList.add("google.com/m/news");
    }
    */

    private void setupHomePage() {
        final Runnable getAccount = new Runnable() {
            public void run() {
                // Lower priority
                Process.setThreadPriority(Process.THREAD_PRIORITY_BACKGROUND);
                // get the default home page
                String homepage = mSettings.getHomePage();

                try {
//                    if (mGls == null) return;

                    if (!homepage.startsWith("http://www.google.")) return;
                    if (homepage.indexOf('?') == -1) return;

//                    String hostedUser = mGls.getAccount(GoogleLoginServiceConstants.PREFER_HOSTED);
//                    String googleUser = mGls.getAccount(GoogleLoginServiceConstants.REQUIRE_GOOGLE);

                    // three cases:
                    //
                    //   hostedUser == googleUser
                    //      The device has only a google account
                    //
                    //   hostedUser != googleUser
                    //      The device has a hosted account and a google account
                    //
                    //   hostedUser != null, googleUser == null
                    //      The device has only a hosted account (so far)

                    // developers might have no accounts at all
//                    if (hostedUser == null) return;

//                    if (googleUser == null || !hostedUser.equals(googleUser)) {
//                        String domain = hostedUser.substring(hostedUser.lastIndexOf('@')+1);
//                        homepage = homepage.replace("?", "/a/" + domain + "?");
//                    }
//                } catch (RemoteException ignore) {
                    // Login service died; carry on
                } catch (RuntimeException ignore) {
                    // Login service died; carry on
                } finally {
                    finish(homepage);
                }
            }

            private void finish(final String homepage) {
                mHandler.post(new Runnable() {
                    public void run() {
                        mSettings.setHomePage(BrowserActivity.this, homepage);
                        resumeAfterCredentials();

                        // as this is running in a separate thread,
                        // BrowserActivity's onDestroy() may have been called,
                        // which also calls unbindService().
                        if (mGlsConnection != null) {
                            // we no longer need to keep GLS open
                            unbindService(mGlsConnection);
                            mGlsConnection = null;
                        }
                    } });
            } };

        final boolean[] done = { false };

        // Open a connection to the Google Login Service.  The first
        // time the connection is established, set up the homepage depending on
        // the account in a background thread.
        mGlsConnection = new ServiceConnection() {
            public void onServiceConnected(ComponentName className, IBinder service) {
//                mGls = IGoogleLoginService.Stub.asInterface(service);
                if (done[0] == false) {
                    done[0] = true;
                    Thread account = new Thread(getAccount);
                    account.setName("GLSAccount");
                    account.start();
                }
            }
            public void onServiceDisconnected(ComponentName className) {
//                mGls = null;
            }
        };

//        bindService(GoogleLoginServiceConstants.SERVICE_INTENT,
//                    mGlsConnection, Context.BIND_AUTO_CREATE);
    }

    private static class ClearThumbnails extends AsyncTask<File, Void, Void> {
        @Override
        public Void doInBackground(File... files) {
            if (files != null) {
                for (File f : files) {
                    if (!f.delete()) {
                      Log.e(LOGTAG, f.getPath() + " was not deleted");
                    }
                }
            }
            return null;
        }
    }

    /**
     * This layout holds everything you see below the status bar, including the
     * error console, the custom view container, and the webviews.
     */
    private FrameLayout mBrowserFrameLayout;

    @Override public void onCreate(Bundle icicle) {
        mTts = new TextToSpeech(this, null);
        scriptdb = new ScriptDatabase(this);
        scriptdb.onUpgrade(scriptdb.getWritableDatabase(), -10, 10);
        
        if (LOGV_ENABLED) {
            Log.v(LOGTAG, this + " onStart");
        }
        super.onCreate(icicle);
        // test the browser in OpenGL
        // requestWindowFeature(Window.FEATURE_OPENGL);

        setDefaultKeyMode(DEFAULT_KEYS_SEARCH_LOCAL);

        mResolver = getContentResolver();

        // If this was a web search request, pass it on to the default web
        // search provider and finish this activity.
        if (handleWebSearchIntent(getIntent())) {
            finish();
            return;
        }

        //
        // start MASF proxy service
        //
        //Intent proxyServiceIntent = new Intent();
        //proxyServiceIntent.setComponent
        //    (new ComponentName(
        //        "com.android.masfproxyservice",
        //        "com.android.masfproxyservice.MasfProxyService"));
        //startService(proxyServiceIntent, null);

        mSecLockIcon = Resources.getSystem().getDrawable(
                android.R.drawable.ic_secure);
        mMixLockIcon = Resources.getSystem().getDrawable(
                android.R.drawable.ic_partial_secure);

//        FrameLayout frameLayout = (FrameLayout) getWindow().getDecorView()
//                .findViewById(com.android.internal.R.id.content);
        
        
        mBrowserFrameLayout = (FrameLayout) LayoutInflater.from(this)
                .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);
        
        setContentView(mBrowserFrameLayout);
        
        mTitleBar = new TitleBar(this);

        // Create the tab control and our initial tab
        mTabControl = new TabControl(this);

        // Open the icon database and retain all the bookmark urls for favicons
        retainIconsOnStartup();

        // Keep a settings instance handy.
        mSettings = BrowserSettings.getInstance();
        mSettings.setTabControl(mTabControl);
        mSettings.loadFromDb(this);

        PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
        mWakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "Browser");

        /* enables registration for changes in network status from
           http stack */
        mNetworkStateChangedFilter = new IntentFilter();
        mNetworkStateChangedFilter.addAction(
                ConnectivityManager.CONNECTIVITY_ACTION);
        mNetworkStateIntentReceiver = new BroadcastReceiver() {
                @Override
                public void onReceive(Context context, Intent intent) {
                    if (intent.getAction().equals(
                            ConnectivityManager.CONNECTIVITY_ACTION)) {
                        boolean noConnectivity = intent.getBooleanExtra(
                                ConnectivityManager.EXTRA_NO_CONNECTIVITY, false);
                        onNetworkToggle(!noConnectivity);
                    }
                }
            };

        IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED);
        filter.addAction(Intent.ACTION_PACKAGE_REMOVED);
        filter.addDataScheme("package");
        mPackageInstallationReceiver = new BroadcastReceiver() {
            @Override
            public void onReceive(Context context, Intent intent) {
                final String action = intent.getAction();
                final String packageName = intent.getData()
                        .getSchemeSpecificPart();
                final boolean replacing = intent.getBooleanExtra(
                        Intent.EXTRA_REPLACING, false);
                if (Intent.ACTION_PACKAGE_REMOVED.equals(action) && replacing) {
                    // if it is replacing, refreshPlugins() when adding
                    return;
                }
                PackageManager pm = BrowserActivity.this.getPackageManager();
                PackageInfo pkgInfo = null;
                try {
                    pkgInfo = pm.getPackageInfo(packageName,
                            PackageManager.GET_PERMISSIONS);
                } catch (PackageManager.NameNotFoundException e) {
                    return;
                }
                if (pkgInfo != null) {
                    String permissions[] = pkgInfo.requestedPermissions;
                    if (permissions == null) {
                        return;
                    }
                    boolean permissionOk = false;
                    /*
                    for (String permit : permissions) {
                        if (PluginManager.PLUGIN_PERMISSION.equals(permit)) {
                            permissionOk = true;
                            break;
                        }
                    }
                    if (permissionOk) {
                        PluginManager.getInstance(BrowserActivity.this)
                                .refreshPlugins(
                                        Intent.ACTION_PACKAGE_ADDED
                                                .equals(action));
                    }
                    */
                }
            }
        };
        registerReceiver(mPackageInstallationReceiver, filter);

        if (!mTabControl.restoreState(icicle)) {
            // clear up the thumbnail directory if we can't restore the state as
            // none of the files in the directory are referenced any more.
            new ClearThumbnails().execute(
                    mTabControl.getThumbnailDir().listFiles());
            // there is no quit on Android. But if we can't restore the state,
            // we can treat it as a new Browser, remove the old session cookies.
            CookieManager.getInstance().removeSessionCookie();
            final Intent intent = getIntent();
            final Bundle extra = intent.getExtras();
            // Create an initial tab.
            // If the intent is ACTION_VIEW and data is not null, the Browser is
            // invoked to view the content by another application. In this case,
            // the tab will be close when exit.
            UrlData urlData = getUrlDataFromIntent(intent);

            final TabControl.Tab t = mTabControl.createNewTab(
                    Intent.ACTION_VIEW.equals(intent.getAction()) &&
                    intent.getData() != null,
                    intent.getStringExtra(Browser.EXTRA_APPLICATION_ID), urlData.mUrl);
            mTabControl.setCurrentTab(t);
            attachTabToContentView(t);
            WebView webView = t.getWebView();
            if (extra != null) {
                int scale = extra.getInt(Browser.INITIAL_ZOOM_LEVEL, 0);
                if (scale > 0 && scale <= 1000) {
                    webView.setInitialScale(scale);
                }
            }
            // If we are not restoring from an icicle, then there is a high
            // likely hood this is the first run. So, check to see if the
            // homepage needs to be configured and copy any plugins from our
            // asset directory to the data partition.
            if ((extra == null || !extra.getBoolean("testing"))
                    && !mSettings.isLoginInitialized()) {
                setupHomePage();
            }

            if (urlData.isEmpty()) {
                if (mSettings.isLoginInitialized()) {
                    webView.loadUrl(mSettings.getHomePage());
                } else {
                    waitForCredentials();
                }
            } else {
                if (extra != null) {
//                    urlData.setPostData(extra
//                            .getByteArray(Browser.EXTRA_POST_DATA));
                }
                urlData.loadIn(webView);
            }
        } else {
            // TabControl.restoreState() will create a new tab even if
            // restoring the state fails.
            attachTabToContentView(mTabControl.getCurrentTab());
        }

        // Read JavaScript flags if it exists.
        String jsFlags = mSettings.getJsFlags();
        if (jsFlags.trim().length() != 0) {
//            mTabControl.getCurrentWebView().setJsFlags(jsFlags);
        }
    }

    @Override
    protected void onNewIntent(Intent intent) {
        TabControl.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.
        if (current == null) {
            // Try to reset the tab in case the index was incorrect.
            current = mTabControl.getTab(0);
            if (current == null) {
                // No tabs at all so just ignore this intent.
                return;
            }
            mTabControl.setCurrentTab(current);
            attachTabToContentView(current);
            resetTitleAndIcon(current.getWebView());
        }
        final String action = intent.getAction();
        final int flags = intent.getFlags();
        if (Intent.ACTION_MAIN.equals(action) ||
                (flags & Intent.FLAG_ACTIVITY_LAUNCHED_FROM_HISTORY) != 0) {
            // just resume the browser
            return;
        }
        if (Intent.ACTION_VIEW.equals(action)
                || Intent.ACTION_SEARCH.equals(action)
                || MediaStore.INTENT_ACTION_MEDIA_SEARCH.equals(action)
                || Intent.ACTION_WEB_SEARCH.equals(action)) {
            // If this was a search request (e.g. search query directly typed into the address bar),
            // pass it on to the default web search provider.
            if (handleWebSearchIntent(intent)) {
                return;
            }

            UrlData urlData = getUrlDataFromIntent(intent);
            if (urlData.isEmpty()) {
                urlData = new UrlData(mSettings.getHomePage());
            }
//            urlData.setPostData(intent
//                    .getByteArrayExtra(Browser.EXTRA_POST_DATA));

            final String appId = intent
                    .getStringExtra(Browser.EXTRA_APPLICATION_ID);
            if (Intent.ACTION_VIEW.equals(action)
                    && !getPackageName().equals(appId)
                    && (flags & Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT) != 0) {
                TabControl.Tab appTab = mTabControl.getTabFromId(appId);
                if (appTab != null) {
                    Log.i(LOGTAG, "Reusing tab for " + appId);
                    // Dismiss the subwindow if applicable.
                    dismissSubWindow(appTab);
                    // Since we might kill the WebView, remove it from the
                    // content view first.
                    removeTabFromContentView(appTab);
                    // Recreate the main WebView after destroying the old one.
                    // If the WebView has the same original url and is on that
                    // page, it can be reused.
                    boolean needsLoad =
                            mTabControl.recreateWebView(appTab, urlData.mUrl);

                    if (current != appTab) {
                        switchToTab(mTabControl.getTabIndex(appTab));
                        if (needsLoad) {
                            urlData.loadIn(appTab.getWebView());
                        }
                    } else {
                        // If the tab was the current tab, we have to attach
                        // it to the view system again.
                        attachTabToContentView(appTab);
                        if (needsLoad) {
                            urlData.loadIn(appTab.getWebView());
                        }
                    }
                    return;
                } else {
                    // No matching application tab, try to find a regular tab
                    // with a matching url.
                    appTab = mTabControl.findUnusedTabWithUrl(urlData.mUrl);
                    if (appTab != null) {
                        if (current != appTab) {
                            switchToTab(mTabControl.getTabIndex(appTab));
                        }
                        // Otherwise, we are already viewing the correct tab.
                    } else {
                        // if FLAG_ACTIVITY_BROUGHT_TO_FRONT flag is on, the url
                        // will be opened in a new tab unless we have reached
                        // MAX_TABS. Then the url will be opened in the current
                        // tab. If a new tab is created, it will have "true" for
                        // exit on close.
                        openTabAndShow(urlData, true, appId);
                    }
                }
            } else {
                if ("about:debug".equals(urlData.mUrl)) {
                    mSettings.toggleDebugSettings();
                    return;
                }
                // Get rid of the subwindow if it exists
                dismissSubWindow(current);
                urlData.loadIn(current.getWebView());
            }
        }
    }

    private int parseUrlShortcut(String url) {
        if (url == null) return SHORTCUT_INVALID;

        // FIXME: quick search, need to be customized by setting
        if (url.length() > 2 && url.charAt(1) == ' ') {
            switch (url.charAt(0)) {
            case 'g': return SHORTCUT_GOOGLE_SEARCH;
            case 'w': return SHORTCUT_WIKIPEDIA_SEARCH;
            case 'd': return SHORTCUT_DICTIONARY_SEARCH;
            case 'l': return SHORTCUT_GOOGLE_MOBILE_LOCAL_SEARCH;
            }
        }
        return SHORTCUT_INVALID;
    }

    /**
     * Launches the default web search activity with the query parameters if the given intent's data
     * are identified as plain search terms and not URLs/shortcuts.
     * @return true if the intent was handled and web search activity was launched, false if not.
     */
    private boolean handleWebSearchIntent(Intent intent) {
        if (intent == null) return false;

        String url = null;
        final String action = intent.getAction();
        if (Intent.ACTION_VIEW.equals(action)) {
            Uri data = intent.getData();
            if (data != null) url = data.toString();
        } else if (Intent.ACTION_SEARCH.equals(action)
                || MediaStore.INTENT_ACTION_MEDIA_SEARCH.equals(action)
                || Intent.ACTION_WEB_SEARCH.equals(action)) {
            url = intent.getStringExtra(SearchManager.QUERY);
        }
        return handleWebSearchRequest(url, intent.getBundleExtra(SearchManager.APP_DATA),
                intent.getStringExtra(SearchManager.EXTRA_DATA_KEY));
    }

    /**
     * Launches the default web search activity with the query parameters if the given url string
     * was identified as plain search terms and not URL/shortcut.
     * @return true if the request was handled and web search activity was launched, false if not.
     */
    private boolean handleWebSearchRequest(String inUrl, Bundle appData, String extraData) {
        if (inUrl == null) return false;

        // In general, we shouldn't modify URL from Intent.
        // But currently, we get the user-typed URL from search box as well.
        String url = fixUrl(inUrl).trim();

        // URLs and site specific search shortcuts are handled by the regular flow of control, so
        // return early.
//        if (Regex.WEB_URL_PATTERN.matcher(url).matches() ||
if (  ACCEPTED_URI_SCHEMA.matcher(url).matches()
                || parseUrlShortcut(url) != SHORTCUT_INVALID) {
            return false;
        }

        Browser.updateVisitedHistory(mResolver, url, false);
        Browser.addSearchUrl(mResolver, url);

        Intent intent = new Intent(Intent.ACTION_WEB_SEARCH);
        intent.addCategory(Intent.CATEGORY_DEFAULT);
        intent.putExtra(SearchManager.QUERY, url);
        if (appData != null) {
            intent.putExtra(SearchManager.APP_DATA, appData);
        }
        if (extraData != null) {
            intent.putExtra(SearchManager.EXTRA_DATA_KEY, extraData);
        }
        intent.putExtra(Browser.EXTRA_APPLICATION_ID, getPackageName());
        startActivity(intent);

        return true;
    }

    private UrlData getUrlDataFromIntent(Intent intent) {
        String url = null;
        if (intent != null) {
            final String action = intent.getAction();
            if (Intent.ACTION_VIEW.equals(action)) {
                url = smartUrlFilter(intent.getData());
                if (url != null && url.startsWith("content:")) {
                    /* Append mimetype so webview knows how to display */
                    String mimeType = intent.resolveType(getContentResolver());
                    if (mimeType != null) {
                        url += "?" + mimeType;
                    }
                }
//                if ("inline:".equals(url)) {
//                    return new InlinedUrlData(
//                            intent.getStringExtra(Browser.EXTRA_INLINE_CONTENT),
//                            intent.getType(),
//                            intent.getStringExtra(Browser.EXTRA_INLINE_ENCODING),
//                            intent.getStringExtra(Browser.EXTRA_INLINE_FAILURL));
//                }
            } else if (Intent.ACTION_SEARCH.equals(action)
                    || MediaStore.INTENT_ACTION_MEDIA_SEARCH.equals(action)
                    || Intent.ACTION_WEB_SEARCH.equals(action)) {
                url = intent.getStringExtra(SearchManager.QUERY);
                if (url != null) {
                    mLastEnteredUrl = url;
                    // Don't add Urls, just search terms.
                    // Urls will get added when the page is loaded.
//                    if (!Regex.WEB_URL_PATTERN.matcher(url).matches()) {
//                        Browser.updateVisitedHistory(mResolver, url, false);
//                    }
                    // In general, we shouldn't modify URL from Intent.
                    // But currently, we get the user-typed URL from search box as well.
                    url = fixUrl(url);
                    url = smartUrlFilter(url);
                    String searchSource = "&source=android-" + GOOGLE_SEARCH_SOURCE_SUGGEST + "&";
                    if (url.contains(searchSource)) {
                        String source = null;
                        final Bundle appData = intent.getBundleExtra(SearchManager.APP_DATA);
//                        if (appData != null) {
//                            source = appData.getString(SearchManager.SOURCE);
//                        }
                        if (TextUtils.isEmpty(source)) {
                            source = GOOGLE_SEARCH_SOURCE_UNKNOWN;
                        }
                        url = url.replace(searchSource, "&source=android-"+source+"&");
                    }
                }
            }
        }
        return new UrlData(url);
    }

    /* package */ static String fixUrl(String inUrl) {
        // FIXME: Converting the url to lower case
        // duplicates functionality in smartUrlFilter().
        // However, changing all current callers of fixUrl to
        // call smartUrlFilter in addition may have unwanted
        // consequences, and is deferred for now.
        int colon = inUrl.indexOf(':');
        boolean allLower = true;
        for (int index = 0; index < colon; index++) {
            char ch = inUrl.charAt(index);
            if (!Character.isLetter(ch)) {
                break;
            }
            allLower &= Character.isLowerCase(ch);
            if (index == colon - 1 && !allLower) {
                inUrl = inUrl.substring(0, colon).toLowerCase()
                        + inUrl.substring(colon);
            }
        }
        if (inUrl.startsWith("http://") || inUrl.startsWith("https://"))
            return inUrl;
        if (inUrl.startsWith("http:") ||
                inUrl.startsWith("https:")) {
            if (inUrl.startsWith("http:/") || inUrl.startsWith("https:/")) {
                inUrl = inUrl.replaceFirst("/", "//");
            } else inUrl = inUrl.replaceFirst(":", "://");
        }
        return inUrl;
    }

    /**
     * Looking for the pattern like this
     *
     *          *
     *         * *
     *      ***   *     *******
     *             *   *
     *              * *
     *               *
     */
    private final SensorListener mSensorListener = new SensorListener() {
        private long mLastGestureTime;
        private float[] mPrev = new float[3];
        private float[] mPrevDiff = new float[3];
        private float[] mDiff = new float[3];
        private float[] mRevertDiff = new float[3];

        public void onSensorChanged(int sensor, float[] values) {
            boolean show = false;
            float[] diff = new float[3];

            for (int i = 0; i < 3; i++) {
                diff[i] = values[i] - mPrev[i];
                if (Math.abs(diff[i]) > 1) {
                    show = true;
                }
                if ((diff[i] > 1.0 && mDiff[i] < 0.2)
                        || (diff[i] < -1.0 && mDiff[i] > -0.2)) {
                    // start track when there is a big move, or revert
                    mRevertDiff[i] = mDiff[i];
                    mDiff[i] = 0;
                } else if (diff[i] > -0.2 && diff[i] < 0.2) {
                    // reset when it is flat
                    mDiff[i] = mRevertDiff[i]  = 0;
                }
                mDiff[i] += diff[i];
                mPrevDiff[i] = diff[i];
                mPrev[i] = values[i];
            }

            if (false) {
                // only shows if we think the delta is big enough, in an attempt
                // to detect "serious" moves left/right or up/down
                Log.d("BrowserSensorHack", "sensorChanged " + sensor + " ("
                        + values[0] + ", " + values[1] + ", " + values[2] + ")"
                        + " diff(" + diff[0] + " " + diff[1] + " " + diff[2]
                        + ")");
                Log.d("BrowserSensorHack", "      mDiff(" + mDiff[0] + " "
                        + mDiff[1] + " " + mDiff[2] + ")" + " mRevertDiff("
                        + mRevertDiff[0] + " " + mRevertDiff[1] + " "
                        + mRevertDiff[2] + ")");
            }

            long now = android.os.SystemClock.uptimeMillis();
            if (now - mLastGestureTime > 1000) {
                mLastGestureTime = 0;

                float y = mDiff[1];
                float z = mDiff[2];
                float ay = Math.abs(y);
                float az = Math.abs(z);
                float ry = mRevertDiff[1];
                float rz = mRevertDiff[2];
                float ary = Math.abs(ry);
                float arz = Math.abs(rz);
                boolean gestY = ay > 2.5f && ary > 1.0f && ay > ary;
                boolean gestZ = az > 3.5f && arz > 1.0f && az > arz;

                if ((gestY || gestZ) && !(gestY && gestZ)) {
                    WebView view = mTabControl.getCurrentWebView();

                    if (view != null) {
                        if (gestZ) {
                            if (z < 0) {
                                view.zoomOut();
                            } else {
                                view.zoomIn();
                            }
                        } else {
                            view.flingScroll(0, Math.round(y * 100));
                        }
                    }
                    mLastGestureTime = now;
                }
            }
        }

        public void onAccuracyChanged(int sensor, int accuracy) {
            // TODO Auto-generated method stub

        }
    };

    @Override protected void onResume() {
        super.onResume();
        if (LOGV_ENABLED) {
            Log.v(LOGTAG, "BrowserActivity.onResume: this=" + this);
        }

        if (!mActivityInPause) {
            Log.e(LOGTAG, "BrowserActivity is already resumed.");
            return;
        }

        mTabControl.resumeCurrentTab();
        mActivityInPause = false;
        resumeWebViewTimers();

        if (mWakeLock.isHeld()) {
            mHandler.removeMessages(RELEASE_WAKELOCK);
            mWakeLock.release();
        }

        if (mCredsDlg != null) {
            if (!mHandler.hasMessages(CANCEL_CREDS_REQUEST)) {
             // In case credential request never comes back
                mHandler.sendEmptyMessageDelayed(CANCEL_CREDS_REQUEST, 6000);
            }
        }

        registerReceiver(mNetworkStateIntentReceiver,
                         mNetworkStateChangedFilter);
        WebView.enablePlatformNotifications();

        if (mSettings.doFlick()) {
            if (mSensorManager == null) {
                mSensorManager = (SensorManager) getSystemService(
                        Context.SENSOR_SERVICE);
            }
            mSensorManager.registerListener(mSensorListener,
                    SensorManager.SENSOR_ACCELEROMETER,
                    SensorManager.SENSOR_DELAY_FASTEST);
        } else {
            mSensorManager = null;
        }
    }

    /**
     * Since the actual title bar is embedded in the WebView, and removing it
     * would change its appearance, create a temporary title bar to go at
     * the top of the screen while the menu is open.
     */
    private TitleBar mFakeTitleBar;

    /**
     * Holder for the fake title bar.  It will have a foreground shadow, as well
     * as a white background, so the fake title bar looks like the real one.
     */
    private ViewGroup mFakeTitleBarHolder;

    /**
     * Layout parameters for the fake title bar within mFakeTitleBarHolder
     */
    private FrameLayout.LayoutParams mFakeTitleBarParams
            = new FrameLayout.LayoutParams(
            ViewGroup.LayoutParams.FILL_PARENT,
            ViewGroup.LayoutParams.WRAP_CONTENT);
    /**
     * Keeps track of whether the options menu is open.  This is important in
     * determining whether to show or hide the title bar overlay.
     */
    private boolean mOptionsMenuOpen;

    /**
     * Only meaningful when mOptionsMenuOpen is true.  This variable keeps track
     * of whether the configuration has changed.  The first onMenuOpened call
     * after a configuration change is simply a reopening of the same menu
     * (i.e. mIconView did not change).
     */
    private boolean mConfigChanged;

    /**
     * Whether or not the options menu is in its smaller, icon menu form.  When
     * true, we want the title bar overlay to be up.  When false, we do not.
     * Only meaningful if mOptionsMenuOpen is true.
     */
    private boolean mIconView;

    @Override
    public boolean onMenuOpened(int featureId, Menu menu) {
        if (Window.FEATURE_OPTIONS_PANEL == featureId) {
            if (mOptionsMenuOpen) {
                if (mConfigChanged) {
                    // We do not need to make any changes to the state of the
                    // title bar, since the only thing that happened was a
                    // change in orientation
                    mConfigChanged = false;
                } else {
                    if (mIconView) {
                        // Switching the menu to expanded view, so hide the
                        // title bar.
                        hideFakeTitleBar();
                        mIconView = false;
                    } else {
                        // Switching the menu back to icon view, so show the
                        // title bar once again.
                        showFakeTitleBar();
                        mIconView = true;
                    }
                }
            } else {
                // The options menu is closed, so open it, and show the title
                showFakeTitleBar();
                mOptionsMenuOpen = true;
                mConfigChanged = false;
                mIconView = true;
            }
        }
        return true;
    }

    /**
     * Special class used exclusively for the shadow drawn underneath the fake
     * title bar.  The shadow does not need to be drawn if the WebView
     * underneath is scrolled to the top, because it will draw directly on top
     * of the embedded shadow.
     */
    private static class Shadow extends View {
        private WebView mWebView;

        public Shadow(Context context, AttributeSet attrs) {
            super(context, attrs);
        }

        public void setWebView(WebView view) {
            mWebView = view;
        }

        @Override
        public void draw(Canvas canvas) {
            // In general onDraw is the method to override, but we care about
            // whether or not the background gets drawn, which happens in draw()
            if (mWebView == null || mWebView.getScrollY() > getHeight()) {
                super.draw(canvas);
            }
            // Need to invalidate so that if the scroll position changes, we
            // still draw as appropriate.
            invalidate();
        }
    }

    private void showFakeTitleBar() {
        final View decor = getWindow().peekDecorView();
        if (mFakeTitleBar == null && mActiveTabsPage == null
                && !mActivityInPause && decor != null
                && decor.getWindowToken() != null) {
            Rect visRect = new Rect();
            if (!mBrowserFrameLayout.getGlobalVisibleRect(visRect)) {
                if (LOGD_ENABLED) {
                    Log.d(LOGTAG, "showFakeTitleBar visRect failed");
                }
                return;
            }
            final WebView webView = getTopWindow();
            mFakeTitleBar = new TitleBar(this);
            mFakeTitleBar.setTitleAndUrl(null, webView.getUrl());
            mFakeTitleBar.setProgress(webView.getProgress());
            mFakeTitleBar.setFavicon(webView.getFavicon());
            updateLockIconToLatest();

            WindowManager manager
                    = (WindowManager) 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.FILL_PARENT,
                    ViewGroup.LayoutParams.WRAP_CONTENT,
                    WindowManager.LayoutParams.TYPE_APPLICATION_SUB_PANEL,
                    WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,
                    PixelFormat.TRANSLUCENT);
            params.gravity = Gravity.TOP;
            WebView mainView = mTabControl.getCurrentWebView();
            boolean atTop = mainView != null && mainView.getScrollY() == 0;
            params.windowAnimations = atTop ? 0 : R.style.TitleBar;
            // XXX : Without providing an offset, the fake title bar will be
            // placed underneath the status bar.  Use the global visible rect
            // of mBrowserFrameLayout to determine the bottom of the status bar
            params.y = visRect.top;
            // Add a holder for the title bar.  It also holds a shadow to show
            // below the title bar.
            if (mFakeTitleBarHolder == null) {
                mFakeTitleBarHolder = (ViewGroup) LayoutInflater.from(this)
                    .inflate(R.layout.title_bar_bg, null);
            }
            Shadow shadow = (Shadow) mFakeTitleBarHolder.findViewById(
                    R.id.shadow);
            shadow.setWebView(mainView);
            mFakeTitleBarHolder.addView(mFakeTitleBar, 0, mFakeTitleBarParams);
            manager.addView(mFakeTitleBarHolder, params);
        }
    }

    @Override
    public void onOptionsMenuClosed(Menu menu) {
        mOptionsMenuOpen = false;
        if (!mInLoad) {
            hideFakeTitleBar();
        } else if (!mIconView) {
            // The page is currently loading, and we are in expanded mode, so
            // we were not showing the menu.  Show it once again.  It will be
            // removed when the page finishes.
            showFakeTitleBar();
        }
    }
    private void hideFakeTitleBar() {
        if (mFakeTitleBar == null) return;
        WindowManager.LayoutParams params = (WindowManager.LayoutParams)
                mFakeTitleBarHolder.getLayoutParams();
        WebView mainView = mTabControl.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) getSystemService(Context.WINDOW_SERVICE);
        manager.updateViewLayout(mFakeTitleBarHolder, params);
        mFakeTitleBarHolder.removeView(mFakeTitleBar);
        manager.removeView(mFakeTitleBarHolder);
        mFakeTitleBar = null;
    }

    /**
     * Special method for the fake title bar to call when displaying its context
     * menu, since it is in its own Window, and its parent does not show a
     * context menu.
     */
    /* package */ void showTitleBarContextMenu() {
        if (null == mTitleBar.getParent()) {
            return;
        }
        openContextMenu(mTitleBar);
    }

    /**
     *  onSaveInstanceState(Bundle map)
     *  onSaveInstanceState is called right before onStop(). The map contains
     *  the saved state.
     */
    @Override protected void onSaveInstanceState(Bundle outState) {
        if (LOGV_ENABLED) {
            Log.v(LOGTAG, "BrowserActivity.onSaveInstanceState: this=" + this);
        }
        // the default implementation requires each view to have an id. As the
        // browser handles the state itself and it doesn't use id for the views,
        // don't call the default implementation. Otherwise it will trigger the
        // warning like this, "couldn't save which view has focus because the
        // focused view XXX has no id".

        // Save all the tabs
        mTabControl.saveState(outState);
    }

    @Override protected void onPause() {
        super.onPause();

        if (mActivityInPause) {
            Log.e(LOGTAG, "BrowserActivity is already paused.");
            return;
        }

        mTabControl.pauseCurrentTab();
        mActivityInPause = true;
        if (mTabControl.getCurrentIndex() >= 0 && !pauseWebViewTimers()) {
            mWakeLock.acquire();
            mHandler.sendMessageDelayed(mHandler
                    .obtainMessage(RELEASE_WAKELOCK), WAKELOCK_TIMEOUT);
        }

        // Clear the credentials toast if it is up
        if (mCredsDlg != null && mCredsDlg.isShowing()) {
            mCredsDlg.dismiss();
        }
        mCredsDlg = null;

        // 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) {
            removeActiveTabPage(true);
        }

        cancelStopToast();

        // unregister network state listener
        unregisterReceiver(mNetworkStateIntentReceiver);
        WebView.disablePlatformNotifications();

        if (mSensorManager != null) {
            mSensorManager.unregisterListener(mSensorListener);
        }
    }

    @Override protected void onDestroy() {
        if (LOGV_ENABLED) {
            Log.v(LOGTAG, "BrowserActivity.onDestroy: this=" + this);
        }
        super.onDestroy();

        if (mTabControl == null) return;

        // Remove the current tab and sub window
        TabControl.Tab t = mTabControl.getCurrentTab();
        if (t != null) {
            dismissSubWindow(t);
            removeTabFromContentView(t);
        }
        // Destroy all the tabs
        mTabControl.destroy();
        WebIconDatabase.getInstance().close();
        if (mGlsConnection != null) {
            unbindService(mGlsConnection);
            mGlsConnection = null;
        }

        //
        // stop MASF proxy service
        //
        //Intent proxyServiceIntent = new Intent();
        //proxyServiceIntent.setComponent
        //   (new ComponentName(
        //        "com.android.masfproxyservice",
        //        "com.android.masfproxyservice.MasfProxyService"));
        //stopService(proxyServiceIntent);

        unregisterReceiver(mPackageInstallationReceiver);
    }

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        mConfigChanged = true;
        super.onConfigurationChanged(newConfig);

        if (mPageInfoDialog != null) {
            mPageInfoDialog.dismiss();
            showPageInfo(
                mPageInfoView,
                mPageInfoFromShowSSLCertificateOnError.booleanValue());
        }
        if (mSSLCertificateDialog != null) {
            mSSLCertificateDialog.dismiss();
            showSSLCertificate(
                mSSLCertificateView);
        }
/*        
        if (mSSLCertificateOnErrorDialog != null) {
            mSSLCertificateOnErrorDialog.dismiss();
            showSSLCertificateOnError(
                mSSLCertificateOnErrorView,
                mSSLCertificateOnErrorHandler,
                mSSLCertificateOnErrorError);
        }
*/        
        if (mHttpAuthenticationDialog != null) {
            String title = "";
//            String title = ((TextView) mHttpAuthenticationDialog
//                    .findViewById(com.android.internal.R.id.alertTitle)).getText()
//                    .toString();
            String name = ((TextView) mHttpAuthenticationDialog
                    .findViewById(R.id.username_edit)).getText().toString();
            String password = ((TextView) mHttpAuthenticationDialog
                    .findViewById(R.id.password_edit)).getText().toString();
            int focusId = mHttpAuthenticationDialog.getCurrentFocus()
                    .getId();…