1 /* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 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 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 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. 15 */ 16 17 package com.android.launcher2; 18 19 import android.content.Context; 20 import android.content.Intent; 21 import android.util.AttributeSet; 22 import android.view.LayoutInflater; 23 import android.view.View; 24 import android.widget.AdapterView; 25 import android.net.Uri; 26 import android.provider.LiveFolders; 27 import android.os.AsyncTask; 28 import android.database.Cursor; 29 30 import java.lang.ref.WeakReference; 31 32 import com.android.launcher.R; 33 34 public class LiveFolder extends Folder { 35 private AsyncTask<LiveFolderInfo,Void,Cursor> mLoadingTask; 36 LiveFolder(Context context, AttributeSet attrs)37 public LiveFolder(Context context, AttributeSet attrs) { 38 super(context, attrs); 39 } 40 fromXml(Context context, FolderInfo folderInfo)41 static LiveFolder fromXml(Context context, FolderInfo folderInfo) { 42 final int layout = isDisplayModeList(folderInfo) ? 43 R.layout.live_folder_list : R.layout.live_folder_grid; 44 return (LiveFolder) LayoutInflater.from(context).inflate(layout, null); 45 } 46 isDisplayModeList(FolderInfo folderInfo)47 private static boolean isDisplayModeList(FolderInfo folderInfo) { 48 return ((LiveFolderInfo) folderInfo).displayMode == 49 LiveFolders.DISPLAY_MODE_LIST; 50 } 51 52 @Override onItemClick(AdapterView parent, View v, int position, long id)53 public void onItemClick(AdapterView parent, View v, int position, long id) { 54 LiveFolderAdapter.ViewHolder holder = (LiveFolderAdapter.ViewHolder) v.getTag(); 55 56 if (holder.useBaseIntent) { 57 final Intent baseIntent = ((LiveFolderInfo) mInfo).baseIntent; 58 if (baseIntent != null) { 59 final Intent intent = new Intent(baseIntent); 60 Uri uri = baseIntent.getData(); 61 uri = uri.buildUpon().appendPath(Long.toString(holder.id)).build(); 62 intent.setData(uri); 63 mLauncher.startActivitySafely(intent, "(position=" + position + ", id=" + id + ")"); 64 } 65 } else if (holder.intent != null) { 66 mLauncher.startActivitySafely(holder.intent, 67 "(position=" + position + ", id=" + id + ")"); 68 } 69 } 70 71 @Override onItemLongClick(AdapterView<?> parent, View view, int position, long id)72 public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) { 73 return false; 74 } 75 bind(FolderInfo info)76 void bind(FolderInfo info) { 77 super.bind(info); 78 if (mLoadingTask != null && mLoadingTask.getStatus() == AsyncTask.Status.RUNNING) { 79 mLoadingTask.cancel(true); 80 } 81 mLoadingTask = new FolderLoadingTask(this).execute((LiveFolderInfo) info); 82 } 83 84 @Override onOpen()85 void onOpen() { 86 super.onOpen(); 87 requestFocus(); 88 } 89 90 @Override onClose()91 void onClose() { 92 super.onClose(); 93 if (mLoadingTask != null && mLoadingTask.getStatus() == AsyncTask.Status.RUNNING) { 94 mLoadingTask.cancel(true); 95 } 96 97 // The adapter can be null if onClose() is called before FolderLoadingTask 98 // is done querying the provider 99 final LiveFolderAdapter adapter = (LiveFolderAdapter) mContent.getAdapter(); 100 if (adapter != null) { 101 adapter.cleanup(); 102 } 103 } 104 105 static class FolderLoadingTask extends AsyncTask<LiveFolderInfo, Void, Cursor> { 106 private final WeakReference<LiveFolder> mFolder; 107 private LiveFolderInfo mInfo; 108 FolderLoadingTask(LiveFolder folder)109 FolderLoadingTask(LiveFolder folder) { 110 mFolder = new WeakReference<LiveFolder>(folder); 111 } 112 doInBackground(LiveFolderInfo... params)113 protected Cursor doInBackground(LiveFolderInfo... params) { 114 final LiveFolder folder = mFolder.get(); 115 if (folder != null) { 116 mInfo = params[0]; 117 return LiveFolderAdapter.query(folder.mLauncher, mInfo); 118 } 119 return null; 120 } 121 122 @Override onPostExecute(Cursor cursor)123 protected void onPostExecute(Cursor cursor) { 124 if (!isCancelled()) { 125 if (cursor != null) { 126 final LiveFolder folder = mFolder.get(); 127 if (folder != null) { 128 final Launcher launcher = folder.mLauncher; 129 folder.setContentAdapter(new LiveFolderAdapter(launcher, mInfo, cursor)); 130 } 131 } 132 } else if (cursor != null) { 133 cursor.close(); 134 } 135 } 136 } 137 } 138