The Tor Browser: mobile/android/base/home/LastTabsPanel.java@fc2d59ddac77

     1 /* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-

     2  * This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 package org.mozilla.gecko.home;

     8 import org.mozilla.gecko.AboutPages;

     9 import org.mozilla.gecko.GeckoProfile;

    10 import org.mozilla.gecko.R;

    11 import org.mozilla.gecko.SessionParser;

    12 import org.mozilla.gecko.Telemetry;

    13 import org.mozilla.gecko.TelemetryContract;

    14 import org.mozilla.gecko.db.BrowserContract.Combined;

    15 import org.mozilla.gecko.home.HomePager.OnNewTabsListener;

    17 import android.app.Activity;

    18 import android.content.Context;

    19 import android.database.Cursor;

    20 import android.database.MatrixCursor;

    21 import android.database.MatrixCursor.RowBuilder;

    22 import android.os.Bundle;

    23 import android.support.v4.app.LoaderManager.LoaderCallbacks;

    24 import android.support.v4.content.Loader;

    25 import android.support.v4.widget.CursorAdapter;

    26 import android.view.LayoutInflater;

    27 import android.view.View;

    28 import android.view.ViewGroup;

    29 import android.view.ViewStub;

    30 import android.widget.AdapterView;

    31 import android.widget.ImageView;

    32 import android.widget.TextView;

    34 /**

    35  * Fragment that displays tabs from last session in a ListView.

    36  */

    37 public class LastTabsPanel extends HomeFragment {

    38     // Logging tag name

    39     private static final String LOGTAG = "GeckoLastTabsPanel";

    41     // Cursor loader ID for the session parser

    42     private static final int LOADER_ID_LAST_TABS = 0;

    44     // Adapter for the list of search results

    45     private LastTabsAdapter mAdapter;

    47     // The view shown by the fragment.

    48     private HomeListView mList;

    50     // The title for this HomeFragment panel.

    51     private TextView mTitle;

    53     // The button view for restoring tabs from last session.

    54     private View mRestoreButton;

    56     // Reference to the View to display when there are no results.

    57     private View mEmptyView;

    59     // Callbacks used for the search and favicon cursor loaders

    60     private CursorLoaderCallbacks mCursorLoaderCallbacks;

    62     // On new tabs listener

    63     private OnNewTabsListener mNewTabsListener;

    65     public static LastTabsPanel newInstance() {

    66         return new LastTabsPanel();

    67     }

    69     public LastTabsPanel() {

    70         mNewTabsListener = null;

    71     }

    73     @Override

    74     public void onAttach(Activity activity) {

    75         super.onAttach(activity);

    77         try {

    78             mNewTabsListener = (OnNewTabsListener) activity;

    79         } catch (ClassCastException e) {

    80             throw new ClassCastException(activity.toString()

    81                     + " must implement HomePager.OnNewTabsListener");

    82         }

    83     }

    85     @Override

    86     public void onDetach() {

    87         super.onDetach();

    89         mNewTabsListener = null;

    90     }

    92     @Override

    93     public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

    94         return inflater.inflate(R.layout.home_last_tabs_panel, container, false);

    95     }

    97     @Override

    98     public void onViewCreated(View view, Bundle savedInstanceState) {

    99         mTitle = (TextView) view.findViewById(R.id.title);

   100         if (mTitle != null) {

   101             mTitle.setText(R.string.home_last_tabs_title);

   102         }

   104         mList = (HomeListView) view.findViewById(R.id.list);

   105         mList.setTag(HomePager.LIST_TAG_LAST_TABS);

   107         mList.setOnItemClickListener(new AdapterView.OnItemClickListener() {

   108             @Override

   109             public void onItemClick(AdapterView<?> parent, View view, int position, long id) {

   110                 final Cursor c = mAdapter.getCursor();

   111                 if (c == null || !c.moveToPosition(position)) {

   112                     return;

   113                 }

   115                 Telemetry.sendUIEvent(TelemetryContract.Event.LOAD_URL);

   117                 final String url = c.getString(c.getColumnIndexOrThrow(Combined.URL));

   118                 mNewTabsListener.onNewTabs(new String[] { url });

   119             }

   120         });

   122         mList.setContextMenuInfoFactory(new HomeContextMenuInfo.Factory() {

   123             @Override

   124             public HomeContextMenuInfo makeInfoForCursor(View view, int position, long id, Cursor cursor) {

   125                 final HomeContextMenuInfo info = new HomeContextMenuInfo(view, position, id);

   126                 info.url = cursor.getString(cursor.getColumnIndexOrThrow(Combined.URL));

   127                 info.title = cursor.getString(cursor.getColumnIndexOrThrow(Combined.TITLE));

   128                 return info;

   129             }

   130         });

   132         registerForContextMenu(mList);

   134         mRestoreButton = view.findViewById(R.id.open_all_tabs_button);

   135         mRestoreButton.setOnClickListener(new View.OnClickListener() {

   136             @Override

   137             public void onClick(View v) {

   138                 openAllTabs();

   139             }

   140         });

   141     }

   143     @Override

   144     public void onDestroyView() {

   145         super.onDestroyView();

   146         mList = null;

   147         mTitle = null;

   148         mEmptyView = null;

   149         mRestoreButton = null;

   150     }

   152     @Override

   153     public void onActivityCreated(Bundle savedInstanceState) {

   154         super.onActivityCreated(savedInstanceState);

   156         // Intialize adapter

   157         mAdapter = new LastTabsAdapter(getActivity());

   158         mList.setAdapter(mAdapter);

   160         // Create callbacks before the initial loader is started

   161         mCursorLoaderCallbacks = new CursorLoaderCallbacks();

   162         loadIfVisible();

   163     }

   165     private void updateUiFromCursor(Cursor c) {

   166         if (c != null && c.getCount() > 0) {

   167             if (mTitle != null) {

   168                 mTitle.setVisibility(View.VISIBLE);

   169             }

   170             mRestoreButton.setVisibility(View.VISIBLE);

   171             return;

   172         }

   174         // Cursor is empty, so hide the title and set the

   175         // empty view if it hasn't been set already.

   176         if (mTitle != null) {

   177             mTitle.setVisibility(View.GONE);

   178         }

   179         mRestoreButton.setVisibility(View.GONE);

   181         if (mEmptyView == null) {

   182             // Set empty panel view. We delay this so that the empty view won't flash.

   183             final ViewStub emptyViewStub = (ViewStub) getView().findViewById(R.id.home_empty_view_stub);

   184             mEmptyView = emptyViewStub.inflate();

   186             final ImageView emptyIcon = (ImageView) mEmptyView.findViewById(R.id.home_empty_image);

   187             emptyIcon.setImageResource(R.drawable.icon_last_tabs_empty);

   189             final TextView emptyText = (TextView) mEmptyView.findViewById(R.id.home_empty_text);

   190             emptyText.setText(R.string.home_last_tabs_empty);

   192             mList.setEmptyView(mEmptyView);

   193         }

   194     }

   196     @Override

   197     protected void load() {

   198         getLoaderManager().initLoader(LOADER_ID_LAST_TABS, null, mCursorLoaderCallbacks);

   199     }

   201     private void openAllTabs() {

   202         final Cursor c = mAdapter.getCursor();

   203         if (c == null || !c.moveToFirst()) {

   204             return;

   205         }

   207         final String[] urls = new String[c.getCount()];

   209         do {

   210             urls[c.getPosition()] = c.getString(c.getColumnIndexOrThrow(Combined.URL));

   211         } while (c.moveToNext());

   213         Telemetry.sendUIEvent(TelemetryContract.Event.LOAD_URL, TelemetryContract.Method.BUTTON);

   215         mNewTabsListener.onNewTabs(urls);

   216     }

   218     private static class LastTabsCursorLoader extends SimpleCursorLoader {

   219         public LastTabsCursorLoader(Context context) {

   220             super(context);

   221         }

   223         @Override

   224         public Cursor loadCursor() {

   225             final Context context = getContext();

   227             final String jsonString = GeckoProfile.get(context).readSessionFile(true);

   228             if (jsonString == null) {

   229                 // No previous session data

   230                 return null;

   231             }

   233             final MatrixCursor c = new MatrixCursor(new String[] { Combined._ID,

   234                                                                    Combined.URL,

   235                                                                    Combined.TITLE });

   237             new SessionParser() {

   238                 @Override

   239                 public void onTabRead(SessionTab tab) {

   240                     final String url = tab.getUrl();

   242                     // Don't show last tabs for about:home

   243                     if (AboutPages.isAboutHome(url)) {

   244                         return;

   245                     }

   247                     final RowBuilder row = c.newRow();

   248                     row.add(-1);

   249                     row.add(url);

   251                     final String title = tab.getTitle();

   252                     row.add(title);

   253                 }

   254             }.parse(jsonString);

   256             return c;

   257         }

   258     }

   260     private static class LastTabsAdapter extends CursorAdapter {

   261         public LastTabsAdapter(Context context) {

   262             super(context, null, 0);

   263         }

   265         @Override

   266         public void bindView(View view, Context context, Cursor cursor) {

   267             ((TwoLinePageRow) view).updateFromCursor(cursor);

   268         }

   270         @Override

   271         public View newView(Context context, Cursor cursor, ViewGroup parent) {

   272             return LayoutInflater.from(context).inflate(R.layout.home_item_row, parent, false);

   273         }

   274     }

   276     private class CursorLoaderCallbacks implements LoaderCallbacks<Cursor> {

   277         @Override

   278         public Loader<Cursor> onCreateLoader(int id, Bundle args) {

   279             return new LastTabsCursorLoader(getActivity());

   280         }

   282         @Override

   283         public void onLoadFinished(Loader<Cursor> loader, Cursor c) {

   284             mAdapter.swapCursor(c);

   285             updateUiFromCursor(c);

   286         }

   288         @Override

   289         public void onLoaderReset(Loader<Cursor> loader) {

   290             mAdapter.swapCursor(null);

   291         }

   292     }

   293 }

The Tor Browser / file revision

mobile/android/base/home/LastTabsPanel.java@fc2d59ddac77

mobile/android/base/home/LastTabsPanel.java