/*
* 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.settings;
import android.app.Activity;
import android.appwidget.AppWidgetManager;
import android.content.ContentResolver;
import android.content.ContentUris;
import android.content.ContentValues;
import android.content.Intent;
import android.content.ComponentName;
import android.database.Cursor;
import android.database.SQLException;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Bundle;
import android.provider.BaseColumns;
import android.util.Log;
import java.util.ArrayList;
public class LauncherAppWidgetBinder extends Activity {
private static final String TAG = "LauncherAppWidgetBinder";
private static final boolean LOGD = true;
static final String AUTHORITY = "com.android.launcher.settings";
static final String TABLE_FAVORITES = "favorites";
static final String EXTRA_BIND_SOURCES = "com.android.launcher.settings.bindsources";
static final String EXTRA_BIND_TARGETS = "com.android.launcher.settings.bindtargets";
static final String EXTRA_APPWIDGET_BITMAPS = "com.android.camera.appwidgetbitmaps";
/**
* {@link ContentProvider} constants pulled over from Launcher
*/
static final class LauncherProvider implements BaseColumns {
static final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY + "/" + TABLE_FAVORITES);
static final String ITEM_TYPE = "itemType";
static final String APPWIDGET_ID = "appWidgetId";
static final String ICON = "icon";
static final int ITEM_TYPE_APPWIDGET = 4;
static final int ITEM_TYPE_WIDGET_CLOCK = 1000;
static final int ITEM_TYPE_WIDGET_SEARCH = 1001;
static final int ITEM_TYPE_WIDGET_PHOTO_FRAME = 1002;
}
static final String[] BIND_PROJECTION = new String[] {
LauncherProvider._ID,
LauncherProvider.ITEM_TYPE,
LauncherProvider.APPWIDGET_ID,
LauncherProvider.ICON,
};
static final int INDEX_ID = 0;
static final int INDEX_ITEM_TYPE = 1;
static final int INDEX_APPWIDGET_ID = 2;
static final int INDEX_ICON = 3;
static final ComponentName BIND_PHOTO_APPWIDGET = new ComponentName("com.android.camera",
"com.android.camera.PhotoAppWidgetBind");
@Override
protected void onCreate(Bundle icicle) {
super.onCreate(icicle);
finish();
// This helper reaches into the Launcher database and binds any unlinked
// widgets. If will remove any items that can't be bound successfully.
// We protect this binder at the manifest level by asserting the caller
// has the Launcher WRITE_SETTINGS permission.
final Intent intent = getIntent();
final Bundle extras = intent.getExtras();
int[] bindSources = null;
ArrayList<ComponentName> bindTargets = null;
Exception exception = null;
try {
bindSources = extras.getIntArray(EXTRA_BIND_SOURCES);
bindTargets = intent.getParcelableArrayListExtra(EXTRA_BIND_TARGETS);
} catch (ClassCastException ex) {
exception = ex;
}
if (exception != null || bindSources == null || bindTargets == null ||
bindSources.length != bindTargets.size()) {
Log.w(TAG, "Problem reading incoming bind request, or invalid request", exception);
return;
}
final String selectWhere = buildOrWhereString(LauncherProvider.ITEM_TYPE, bindSources);
final ContentResolver resolver = getContentResolver();
final AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(this);
boolean foundPhotoAppWidgets = false;
final ArrayList<Integer> photoAppWidgetIds = new ArrayList<Integer>();
final ArrayList<Bitmap> photoBitmaps = new ArrayList<Bitmap>();
Cursor c = null;
try {
c = resolver.query(LauncherProvider.CONTENT_URI,
BIND_PROJECTION, selectWhere, null, null);
if (LOGD) Log.d(TAG, "found bind cursor count="+c.getCount());
final ContentValues values = new ContentValues();
while (c != null && c.moveToNext()) {
long favoriteId = c.getLong(INDEX_ID);
int itemType = c.getInt(INDEX_ITEM_TYPE);
int appWidgetId = c.getInt(INDEX_APPWIDGET_ID);
byte[] iconData = c.getBlob(INDEX_ICON);
// Find the binding target for this type
ComponentName targetAppWidget = null;
for (int i = 0; i < bindSources.length; i++) {
if (bindSources[i] == itemType) {
targetAppWidget = bindTargets.get(i);
break;
}
}
if (LOGD) Log.d(TAG, "found matching targetAppWidget="+targetAppWidget.toString()+" for favoriteId="+favoriteId);
boolean bindSuccess = false;
try {
appWidgetManager.bindAppWidgetId(appWidgetId, targetAppWidget);
bindSuccess = true;
} catch (RuntimeException ex) {
Log.w(TAG, "Problem binding widget", ex);
}
// Handle special case of photo widget by loading bitmap and
// preparing for later binding
if (bindSuccess && iconData != null &&
itemType == LauncherProvider.ITEM_TYPE_WIDGET_PHOTO_FRAME) {
Bitmap bitmap = BitmapFactory.decodeByteArray(iconData, 0, iconData.length);
photoAppWidgetIds.add(appWidgetId);
photoBitmaps.add(bitmap);
foundPhotoAppWidgets = true;
}
if (LOGD) Log.d(TAG, "after finished, success="+bindSuccess);
// Depending on success, update launcher or remove item
Uri favoritesUri = ContentUris.withAppendedId(LauncherProvider.CONTENT_URI, favoriteId);
if (bindSuccess) {
values.clear();
values.put(LauncherProvider.ITEM_TYPE, LauncherProvider.ITEM_TYPE_APPWIDGET);
values.putNull(LauncherProvider.ICON);
resolver.update(favoritesUri, values, null, null);
} else {
resolver.delete(favoritesUri, null, null);
}
}
} catch (SQLException ex) {
Log.w(TAG, "Problem while binding appWidgetIds for Launcher", ex);
} finally {
if (c != null) {
c.close();
}
}
if (foundPhotoAppWidgets) {
// Convert appWidgetIds into int[]
final int N = photoAppWidgetIds.size();
final int[] photoAppWidgetIdsArray = new int[N];
for (int i = 0; i < N; i++) {
photoAppWidgetIdsArray[i] = photoAppWidgetIds.get(i);
}
// Launch intent over to handle bitmap binding, but we don't need to
// wait around for the result.
final Intent bindIntent = new Intent();
bindIntent.setComponent(BIND_PHOTO_APPWIDGET);
final Bundle bindExtras = new Bundle();
bindExtras.putIntArray(AppWidgetManager.EXTRA_APPWIDGET_IDS, photoAppWidgetIdsArray);
bindExtras.putParcelableArrayList(EXTRA_APPWIDGET_BITMAPS, photoBitmaps);
bindIntent.putExtras(bindExtras);
startActivity(bindIntent);
}
if (LOGD) Log.d(TAG, "completely finished with binding for Launcher");
}
/**
* Build a query string that will match any row where the column matches
* anything in the values list.
*/
static String buildOrWhereString(String column, int[] values) {
StringBuilder selectWhere = new StringBuilder();
for (int i = values.length - 1; i >= 0; i--) {
selectWhere.append(column).append("=").append(values[i]);
if (i > 0) {
selectWhere.append(" OR ");
}
}
return selectWhere.toString();
}
}
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