summaryrefslogtreecommitdiffstats
path: root/src/com/android/browser/BrowserHistoryPage.java
blob: e333416091b1498c2235834639155ff2cd6dbd28 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
/*
 * Copyright (C) 2008 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.Activity;
import android.app.ExpandableListActivity;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.database.ContentObserver;
import android.database.Cursor;
import android.database.DataSetObserver;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.os.Handler;
import android.os.ServiceManager;
import android.provider.Browser;
import android.text.IClipboard;
import android.util.Log;
import android.view.ContextMenu;
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.ViewGroup.LayoutParams;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.ViewStub;
import android.webkit.DateSorter;
import android.webkit.WebIconDatabase.IconListener;
import android.widget.AdapterView;
import android.widget.ExpandableListAdapter;
import android.widget.ExpandableListView;
import android.widget.ExpandableListView.ExpandableListContextMenuInfo;
import android.widget.TextView;
import android.widget.Toast;

import java.util.List;
import java.util.Vector;

/**
 * Activity for displaying the browser's history, divided into
 * days of viewing.
 */
public class BrowserHistoryPage extends ExpandableListActivity {
    private HistoryAdapter          mAdapter;
    private DateSorter              mDateSorter;
    private boolean                 mMaxTabsOpen;

    private final static String LOGTAG = "browser";

    // Implementation of WebIconDatabase.IconListener
    private class IconReceiver implements IconListener {
        public void onReceivedIcon(String url, Bitmap icon) {
            setListAdapter(mAdapter);
        }
    }
    // Instance of IconReceiver
    private final IconReceiver mIconReceiver = new IconReceiver();

    /**
     * Report back to the calling activity to load a site.
     * @param url   Site to load.
     * @param newWindow True if the URL should be loaded in a new window
     */
    private void loadUrl(String url, boolean newWindow) {
        Intent intent = new Intent().setAction(url);
        if (newWindow) {
            Bundle b = new Bundle();
            b.putBoolean("new_window", true);
            intent.putExtras(b);
        }
        setResultToParent(RESULT_OK, intent);
        finish();
    }
    
    private void copy(CharSequence text) {
        try {
            IClipboard clip = IClipboard.Stub.asInterface(ServiceManager.getService("clipboard"));
            if (clip != null) {
                clip.setClipboardText(text);
            }
        } catch (android.os.RemoteException e) {
            Log.e(LOGTAG, "Copy failed", e);
        }
    }

    @Override
    protected void onCreate(Bundle icicle) {
        super.onCreate(icicle);
        setTitle(R.string.browser_history);
        
        mDateSorter = new DateSorter(this);

        mAdapter = new HistoryAdapter();
        setListAdapter(mAdapter);
        final ExpandableListView list = getExpandableListView();
        list.setOnCreateContextMenuListener(this);
        View v = new ViewStub(this, R.layout.empty_history);
        addContentView(v, new LayoutParams(LayoutParams.FILL_PARENT,
                LayoutParams.FILL_PARENT));
        list.setEmptyView(v);
        // Do not post the runnable if there is nothing in the list.
        if (list.getExpandableListAdapter().getGroupCount() > 0) {
            list.post(new Runnable() {
                public void run() {
                    // In case the history gets cleared before this event
                    // happens.
                    if (list.getExpandableListAdapter().getGroupCount() > 0) {
                        list.expandGroup(0);
                    }
                }
            });
        }
        mMaxTabsOpen = getIntent().getBooleanExtra("maxTabsOpen", false);
        CombinedBookmarkHistoryActivity.getIconListenerSet(getContentResolver())
                .addListener(mIconReceiver);
        
        // initialize the result to canceled, so that if the user just presses
        // back then it will have the correct result
        setResultToParent(RESULT_CANCELED, null);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        super.onCreateOptionsMenu(menu);
        MenuInflater inflater = getMenuInflater();
        inflater.inflate(R.menu.history, menu);
        return true;
    }

    @Override
    public boolean onPrepareOptionsMenu(Menu menu) {
        menu.findItem(R.id.clear_history_menu_id).setVisible(Browser.canClearHistory(this.getContentResolver()));
        return true;
    }
    
    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
            case R.id.clear_history_menu_id:
                // FIXME: Need to clear the tab control in browserActivity 
                // as well
                Browser.clearHistory(getContentResolver());
                mAdapter.refreshData();
                return true;
                
            default:
                break;
        }  
        return super.onOptionsItemSelected(item);
    }
    
    @Override
    public void onCreateContextMenu(ContextMenu menu, View v,
            ContextMenuInfo menuInfo) {
        ExpandableListContextMenuInfo i = 
            (ExpandableListContextMenuInfo) menuInfo;
        // Do not allow a context menu to come up from the group views.
        if (!(i.targetView instanceof HistoryItem)) {
            return;
        }

        // Inflate the menu
        MenuInflater inflater = getMenuInflater();
        inflater.inflate(R.menu.historycontext, menu);

        // Setup the header
        menu.setHeaderTitle(((HistoryItem)i.targetView).getUrl());

        // Only show open in new tab if we have not maxed out available tabs
        menu.findItem(R.id.new_window_context_menu_id).setVisible(!mMaxTabsOpen);
        
        // decide whether to show the share link option
        PackageManager pm = getPackageManager();
        Intent send = new Intent(Intent.ACTION_SEND);
        send.setType("text/plain");
        ResolveInfo ri = pm.resolveActivity(send, PackageManager.MATCH_DEFAULT_ONLY);
        menu.findItem(R.id.share_link_context_menu_id).setVisible(ri != null);
        
        super.onCreateContextMenu(menu, v, menuInfo);
    }
    
    @Override
    public boolean onContextItemSelected(MenuItem item) {
        ExpandableListContextMenuInfo i = 
            (ExpandableListContextMenuInfo) item.getMenuInfo();
        String url = ((HistoryItem)i.targetView).getUrl();
        String title = ((HistoryItem)i.targetView).getName();
        switch (item.getItemId()) {
            case R.id.open_context_menu_id:
                loadUrl(url, false);
                return true;
            case R.id.new_window_context_menu_id:
                loadUrl(url, true);
                return true;
            case R.id.save_to_bookmarks_menu_id:
                Browser.saveBookmark(this, title, url);
                return true;
            case R.id.share_link_context_menu_id:
                Browser.sendString(this, url);
                return true;
            case R.id.copy_context_menu_id:
                copy(url);
                return true;
            case R.id.delete_context_menu_id:
                Browser.deleteFromHistory(getContentResolver(), url);
                mAdapter.refreshData();
                return true;
            case R.id.homepage_context_menu_id:
                BrowserSettings.getInstance().setHomePage(this, url);
                Toast.makeText(this, R.string.homepage_set,
                    Toast.LENGTH_LONG).show();
                return true;
            default:
                break;
        }
        return super.onContextItemSelected(item);
    }
    
    @Override
    public boolean onChildClick(ExpandableListView parent, View v,
            int groupPosition, int childPosition, long id) {
        if (v instanceof HistoryItem) {
            loadUrl(((HistoryItem) v).getUrl(), false);
            return true;
        }
        return false;
    }

    // This Activity is generally a sub-Activity of CombinedHistoryActivity. In
    // that situation, we need to pass our result code up to our parent.
    // However, if someone calls this Activity directly, then this has no
    // parent, and it needs to set it on itself.
    private void setResultToParent(int resultCode, Intent data) {
        Activity a = getParent() == null ? this : getParent();
        a.setResult(resultCode, data);
    }

    private class ChangeObserver extends ContentObserver {
        public ChangeObserver() {
            super(new Handler());
        }

        @Override
        public boolean deliverSelfNotifications() {
            return true;
        }

        @Override
        public void onChange(boolean selfChange) {
            mAdapter.refreshData();
        }
    }
    
    private class HistoryAdapter implements ExpandableListAdapter {
        
        // Array for each of our bins.  Each entry represents how many items are
        // in that bin.
        private int mItemMap[];
        // This is our GroupCount.  We will have at most DateSorter.DAY_COUNT
        // bins, less if the user has no items in one or more bins.
        private int mNumberOfBins;
        private Vector<DataSetObserver> mObservers;
        private Cursor mCursor;
        
        HistoryAdapter() {
            mObservers = new Vector<DataSetObserver>();
            
            final String whereClause = Browser.BookmarkColumns.VISITS + " > 0"
                    // In AddBookmarkPage, where we save new bookmarks, we add
                    // three visits to newly created bookmarks, so that
                    // bookmarks that have not been visited will show up in the
                    // most visited, and higher in the goto search box.
                    // However, this puts the site in the history, unless we
                    // ignore sites with a DATE of 0, which the next line does.
                    + " AND " + Browser.BookmarkColumns.DATE + " > 0";
            final String orderBy = Browser.BookmarkColumns.DATE + " DESC";
           
            mCursor = managedQuery(
                    Browser.BOOKMARKS_URI,
                    Browser.HISTORY_PROJECTION,
                    whereClause, null, orderBy);
            
            buildMap();
            mCursor.registerContentObserver(new ChangeObserver());
        }
        
        void refreshData() {
            mCursor.requery();
            buildMap();
            for (DataSetObserver o : mObservers) {
                o.onChanged();
            }
        }
        
        private void buildMap() {
            // The cursor is sorted by date
            // The ItemMap will store the number of items in each bin.
            int array[] = new int[DateSorter.DAY_COUNT];
            // Zero out the array.
            for (int j = 0; j < DateSorter.DAY_COUNT; j++) {
                array[j] = 0;
            }
            mNumberOfBins = 0;
            int dateIndex = -1;
            if (mCursor.moveToFirst() && mCursor.getCount() > 0) {
                while (!mCursor.isAfterLast()) {
                    long date = mCursor.getLong(Browser.HISTORY_PROJECTION_DATE_INDEX);
                    int index = mDateSorter.getIndex(date);
                    if (index > dateIndex) {
                        mNumberOfBins++;
                        if (index == DateSorter.DAY_COUNT - 1) {
                            // We are already in the last bin, so it will
                            // include all the remaining items
                            array[index] = mCursor.getCount()
                                    - mCursor.getPosition();
                            break;
                        }
                        dateIndex = index;
                    }
                    array[dateIndex]++;
                    mCursor.moveToNext();
                }
            }
            mItemMap = array;
        }

        // This translates from a group position in the Adapter to a position in
        // our array.  This is necessary because some positions in the array
        // have no history items, so we simply do not present those positions
        // to the Adapter.
        private int groupPositionToArrayPosition(int groupPosition) {
            if (groupPosition < 0 || groupPosition >= DateSorter.DAY_COUNT) {
                throw new AssertionError("group position out of range");
            }
            if (DateSorter.DAY_COUNT == mNumberOfBins || 0 == mNumberOfBins) {
                // In the first case, we have exactly the same number of bins
                // as our maximum possible, so there is no need to do a
                // conversion
                // The second statement is in case this method gets called when
                // the array is empty, in which case the provided groupPosition
                // will do fine.
                return groupPosition;
            }
            int arrayPosition = -1;
            while (groupPosition > -1) {
                arrayPosition++;
                if (mItemMap[arrayPosition] != 0) {
                    groupPosition--;
                }
            }
            return arrayPosition;
        }

        public View getChildView(int groupPosition, int childPosition, boolean isLastChild,
                View convertView, ViewGroup parent) {
            groupPosition = groupPositionToArrayPosition(groupPosition);
            HistoryItem item;
            if (null == convertView || !(convertView instanceof HistoryItem)) {
                item = new HistoryItem(BrowserHistoryPage.this);
                // Add padding on the left so it will be indented from the
                // arrows on the group views.
                item.setPadding(item.getPaddingLeft() + 10,
                        item.getPaddingTop(),
                        item.getPaddingRight(),
                        item.getPaddingBottom());
            } else {
                item = (HistoryItem) convertView;
            }
            int index = childPosition;
            for (int i = 0; i < groupPosition; i++) {
                index += mItemMap[i];
            }
            mCursor.moveToPosition(index);
            item.setName(mCursor.getString(Browser.HISTORY_PROJECTION_TITLE_INDEX));
            String url = mCursor.getString(Browser.HISTORY_PROJECTION_URL_INDEX);
            item.setUrl(url);
            item.setFavicon(CombinedBookmarkHistoryActivity.getIconListenerSet(
                    getContentResolver()).getFavicon(url));
            item.setIsBookmark(1 ==
                    mCursor.getInt(Browser.HISTORY_PROJECTION_BOOKMARK_INDEX));
            return item;
        }
        
        public View getGroupView(int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) {
            groupPosition = groupPositionToArrayPosition(groupPosition);
            TextView item;
            if (null == convertView || !(convertView instanceof TextView)) {
                LayoutInflater factory = 
                        LayoutInflater.from(BrowserHistoryPage.this);
                item = (TextView) 
                        factory.inflate(R.layout.history_header, null);
            } else {
                item = (TextView) convertView;
            }
            item.setText(mDateSorter.getLabel(groupPosition));
            return item;
        }

        public boolean areAllItemsEnabled() {
            return true;
        }

        public boolean isChildSelectable(int groupPosition, int childPosition) {
            return true;
        }

        public int getGroupCount() {
            return mNumberOfBins;
        }

        public int getChildrenCount(int groupPosition) {
            return mItemMap[groupPositionToArrayPosition(groupPosition)];
        }

        public Object getGroup(int groupPosition) {
            return null;
        }

        public Object getChild(int groupPosition, int childPosition) {
            return null;
        }

        public long getGroupId(int groupPosition) {
            return groupPosition;
        }

        public long getChildId(int groupPosition, int childPosition) {
            return (childPosition << 3) + groupPosition;
        }

        public boolean hasStableIds() {
            return true;
        }

        public void registerDataSetObserver(DataSetObserver observer) {
            mObservers.add(observer);
        }

        public void unregisterDataSetObserver(DataSetObserver observer) {
            mObservers.remove(observer);
        }

        public void onGroupExpanded(int groupPosition) {
        
        }

        public void onGroupCollapsed(int groupPosition) {
        
        }

        public long getCombinedChildId(long groupId, long childId) {
            return childId;
        }

        public long getCombinedGroupId(long groupId) {
            return groupId;
        }

        public boolean isEmpty() {
            return mCursor.getCount() == 0;
        }
    }
}