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/*
* 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.launcher2;
import android.content.Context;
import android.content.Intent;
import android.util.AttributeSet;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.net.Uri;
import android.provider.LiveFolders;
import android.os.AsyncTask;
import android.database.Cursor;
import android.widget.GridView;
import java.lang.ref.WeakReference;
import com.android.launcher.R;
public class LiveFolder extends Folder {
private AsyncTask<LiveFolderInfo,Void,Cursor> mLoadingTask;
protected GridView mContent;
public LiveFolder(Context context, AttributeSet attrs) {
super(context, attrs);
}
static LiveFolder fromXml(Context context, FolderInfo folderInfo) {
final int layout = isDisplayModeList(folderInfo) ?
R.layout.live_folder_list : R.layout.live_folder_grid;
return (LiveFolder) LayoutInflater.from(context).inflate(layout, null);
}
@Override
protected void onFinishInflate() {
super.onFinishInflate();
mContent = (GridView) findViewById(R.id.folder_content);
mContent.setOnItemClickListener(this);
mContent.setOnItemLongClickListener(this);
}
private static boolean isDisplayModeList(FolderInfo folderInfo) {
return ((LiveFolderInfo) folderInfo).displayMode ==
LiveFolders.DISPLAY_MODE_LIST;
}
@Override
public void onItemClick(AdapterView parent, View v, int position, long id) {
LiveFolderAdapter.ViewHolder holder = (LiveFolderAdapter.ViewHolder) v.getTag();
if (holder.useBaseIntent) {
final Intent baseIntent = ((LiveFolderInfo) mInfo).baseIntent;
if (baseIntent != null) {
final Intent intent = new Intent(baseIntent);
Uri uri = baseIntent.getData();
uri = uri.buildUpon().appendPath(Long.toString(holder.id)).build();
intent.setData(uri);
mLauncher.startActivitySafely(intent, "(position=" + position + ", id=" + id + ")");
}
} else if (holder.intent != null) {
mLauncher.startActivitySafely(holder.intent,
"(position=" + position + ", id=" + id + ")");
}
}
/**
* Sets the adapter used to populate the content area. The adapter must only
* contains ShortcutInfo items.
*
* @param adapter The list of applications to display in the folder.
*/
void setContentAdapter(BaseAdapter adapter) {
mContent.setAdapter(adapter);
}
@Override
void notifyDataSetChanged() {
((BaseAdapter) mContent.getAdapter()).notifyDataSetChanged();
}
@Override
public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {
return false;
}
void bind(FolderInfo info) {
super.bind(info);
if (mLoadingTask != null && mLoadingTask.getStatus() == AsyncTask.Status.RUNNING) {
mLoadingTask.cancel(true);
}
mLoadingTask = new FolderLoadingTask(this).execute((LiveFolderInfo) info);
}
@Override
void onOpen() {
super.onOpen();
// When the folder opens, we need to refresh the GridView's selection by
// forcing a layout
mContent.requestLayout();
requestFocus();
}
@Override
void onClose() {
super.onClose();
if (mLoadingTask != null && mLoadingTask.getStatus() == AsyncTask.Status.RUNNING) {
mLoadingTask.cancel(true);
}
// The adapter can be null if onClose() is called before FolderLoadingTask
// is done querying the provider
final LiveFolderAdapter adapter = (LiveFolderAdapter) mContent.getAdapter();
if (adapter != null) {
adapter.cleanup();
}
}
static class FolderLoadingTask extends AsyncTask<LiveFolderInfo, Void, Cursor> {
private final WeakReference<LiveFolder> mFolder;
private LiveFolderInfo mInfo;
FolderLoadingTask(LiveFolder folder) {
mFolder = new WeakReference<LiveFolder>(folder);
}
protected Cursor doInBackground(LiveFolderInfo... params) {
final LiveFolder folder = mFolder.get();
if (folder != null) {
mInfo = params[0];
return LiveFolderAdapter.query(folder.mLauncher, mInfo);
}
return null;
}
@Override
protected void onPostExecute(Cursor cursor) {
if (!isCancelled()) {
if (cursor != null) {
final LiveFolder folder = mFolder.get();
if (folder != null) {
final Launcher launcher = folder.mLauncher;
folder.setContentAdapter(new LiveFolderAdapter(launcher, mInfo, cursor));
}
}
} else if (cursor != null) {
cursor.close();
}
}
}
}
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