2 * Copyright (C) 2009 The Android Open Source Project
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 package com.android.browser;
19 import android.app.Activity;
20 import android.app.ListActivity;
21 import android.content.Intent;
22 import android.database.ContentObserver;
23 import android.database.Cursor;
24 import android.database.DataSetObserver;
25 import android.graphics.Bitmap;
26 import android.graphics.BitmapFactory;
27 import android.os.Bundle;
28 import android.os.Handler;
29 import android.provider.Browser;
30 import android.webkit.WebIconDatabase.IconListener;
31 import android.widget.ListAdapter;
32 import android.widget.ListView;
33 import android.widget.TextView;
34 import android.view.View;
35 import android.view.ViewGroup;
36 import android.view.ViewGroup.LayoutParams;
37 import android.view.ViewStub;
39 import java.util.Vector;
41 public class MostVisitedActivity extends ListActivity {
43 private MyAdapter mAdapter;
45 // Instance of IconReceiver
46 private final IconReceiver mIconReceiver = new IconReceiver();
49 public void onCreate(Bundle savedInstanceState) {
50 super.onCreate(savedInstanceState);
51 mAdapter = new MyAdapter();
52 CombinedBookmarkHistoryActivity.getIconListenerSet()
53 .addListener(mIconReceiver);
54 setListAdapter(mAdapter);
55 ListView list = getListView();
56 View v = new ViewStub(this, R.layout.empty_history);
57 addContentView(v, new LayoutParams(LayoutParams.MATCH_PARENT,
58 LayoutParams.MATCH_PARENT));
63 protected void onDestroy() {
65 CombinedBookmarkHistoryActivity.getIconListenerSet()
66 .removeListener(mIconReceiver);
69 private class IconReceiver implements IconListener {
70 public void onReceivedIcon(String url, Bitmap icon) {
71 setListAdapter(mAdapter);
75 protected void onListItemClick(ListView l, View v, int position, long id) {
76 TextView tv = (TextView) v.findViewById(R.id.url);
77 String url = tv.getText().toString();
81 private void loadUrl(String url, boolean newWindow) {
82 Intent intent = new Intent().setAction(url);
84 Bundle b = new Bundle();
85 b.putBoolean("new_window", true);
88 setResultToParent(RESULT_OK, intent);
92 private class MyAdapter implements ListAdapter {
93 private Vector<DataSetObserver> mObservers;
94 private Cursor mCursor;
95 // These correspond with projection below.
96 private static final int mUrlIndex = 0;
97 private static final int mTitleIndex = 1;
98 private static final int mBookmarkIndex = 2;
99 private static final int mFaviconIndex = 3;
102 mObservers = new Vector<DataSetObserver>();
103 String[] projection = new String[] {
104 Browser.BookmarkColumns.URL,
105 Browser.BookmarkColumns.TITLE,
106 Browser.BookmarkColumns.BOOKMARK,
107 Browser.BookmarkColumns.FAVICON };
108 String whereClause = Browser.BookmarkColumns.VISITS + " != 0";
109 String orderBy = Browser.BookmarkColumns.VISITS + " DESC";
110 mCursor = managedQuery(Browser.BOOKMARKS_URI, projection,
111 whereClause, null, orderBy);
112 mCursor.registerContentObserver(new ChangeObserver());
115 private class ChangeObserver extends ContentObserver {
116 public ChangeObserver() {
117 super(new Handler());
121 public boolean deliverSelfNotifications() {
126 public void onChange(boolean selfChange) {
127 MyAdapter.this.refreshData();
133 for (DataSetObserver o : mObservers) {
138 public View getView(int position, View convertView, ViewGroup parent) {
140 if (null == convertView) {
141 item = new HistoryItem(MostVisitedActivity.this);
143 item = (HistoryItem) convertView;
145 mCursor.moveToPosition(position);
146 item.setName(mCursor.getString(mTitleIndex));
147 String url = mCursor.getString(mUrlIndex);
149 byte[] data = mCursor.getBlob(mFaviconIndex);
151 item.setFavicon(BitmapFactory.decodeByteArray(data, 0,
154 item.setFavicon(CombinedBookmarkHistoryActivity
155 .getIconListenerSet().getFavicon(url));
157 item.setIsBookmark(1 == mCursor.getInt(mBookmarkIndex));
161 public boolean areAllItemsEnabled() {
165 public boolean isEnabled(int position) {
169 public int getCount() {
170 return mCursor.getCount();
173 public Object getItem(int position) {
177 public long getItemId(int position) {
181 // Always a HistoryItem
182 public int getItemViewType(int position) {
186 public int getViewTypeCount() {
190 public boolean hasStableIds() {
194 public void registerDataSetObserver(DataSetObserver observer) {
195 mObservers.add(observer);
198 public void unregisterDataSetObserver(DataSetObserver observer) {
199 mObservers.remove(observer);
202 public boolean isEmpty() {
203 return getCount() == 0;
207 // This Activity is generally a sub-Activity of CombinedHistoryActivity. In
208 // that situation, we need to pass our result code up to our parent.
209 // However, if someone calls this Activity directly, then this has no
210 // parent, and it needs to set it on itself.
211 private void setResultToParent(int resultCode, Intent data) {
212 Activity a = getParent() == null ? this : getParent();
213 a.setResult(resultCode, data);