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/*
* Copyright (C) 2009 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.ListActivity;
import android.content.Intent;
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.provider.Browser;
import android.webkit.WebIconDatabase.IconListener;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.SimpleCursorAdapter;
import android.widget.TextView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.view.ViewStub;
import java.util.Vector;
public class MostVisitedActivity extends ListActivity {
private MyAdapter mAdapter;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mAdapter = new MyAdapter();
CombinedBookmarkHistoryActivity.getIconListenerSet(getContentResolver())
.addListener(new IconReceiver());
setListAdapter(mAdapter);
ListView list = getListView();
View v = new ViewStub(this, R.layout.empty_history);
addContentView(v, new LayoutParams(LayoutParams.FILL_PARENT,
LayoutParams.FILL_PARENT));
list.setEmptyView(v);
}
private class IconReceiver implements IconListener {
public void onReceivedIcon(String url, Bitmap icon) {
setListAdapter(mAdapter);
}
}
protected void onListItemClick(ListView l, View v, int position, long id) {
TextView tv = (TextView) v.findViewById(R.id.url);
String url = tv.getText().toString();
loadUrl(url, false);
}
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 class MyAdapter implements ListAdapter {
private Vector<DataSetObserver> mObservers;
private Cursor mCursor;
// These correspond with projection below.
private static final int mUrlIndex = 0;
private static final int mTitleIndex = 1;
private static final int mBookmarkIndex = 2;
MyAdapter() {
mObservers = new Vector<DataSetObserver>();
String[] projection = new String[] {
Browser.BookmarkColumns.URL,
Browser.BookmarkColumns.TITLE,
Browser.BookmarkColumns.BOOKMARK };
String whereClause = Browser.BookmarkColumns.VISITS + " != 0";
String orderBy = Browser.BookmarkColumns.VISITS + " DESC";
mCursor = managedQuery(Browser.BOOKMARKS_URI, projection,
whereClause, null, orderBy);
mCursor.registerContentObserver(new ChangeObserver());
}
private class ChangeObserver extends ContentObserver {
public ChangeObserver() {
super(new Handler());
}
@Override
public boolean deliverSelfNotifications() {
return true;
}
@Override
public void onChange(boolean selfChange) {
MyAdapter.this.refreshData();
}
}
void refreshData() {
mCursor.requery();
for (DataSetObserver o : mObservers) {
o.onChanged();
}
}
public View getView(int position, View convertView, ViewGroup parent) {
HistoryItem item;
if (null == convertView) {
item = new HistoryItem(MostVisitedActivity.this);
} else {
item = (HistoryItem) convertView;
}
mCursor.moveToPosition(position);
item.setName(mCursor.getString(mTitleIndex));
String url = mCursor.getString(mUrlIndex);
item.setUrl(url);
item.setFavicon(CombinedBookmarkHistoryActivity.getIconListenerSet(
getContentResolver()).getFavicon(url));
item.setIsBookmark(1 == mCursor.getInt(mBookmarkIndex));
return item;
}
public boolean areAllItemsEnabled() {
return true;
}
public boolean isEnabled(int position) {
return true;
}
public int getCount() {
return mCursor.getCount();
}
public Object getItem(int position) {
return null;
}
public long getItemId(int position) {
return position;
}
// Always a HistoryItem
public int getItemViewType(int position) {
return 0;
}
public int getViewTypeCount() {
return 1;
}
public boolean hasStableIds() {
return true;
}
public void registerDataSetObserver(DataSetObserver observer) {
mObservers.add(observer);
}
public void unregisterDataSetObserver(DataSetObserver observer) {
mObservers.remove(observer);
}
public boolean isEmpty() {
return getCount() == 0;
}
}
// 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);
}
}
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