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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.settings;
import android.appwidget.AppWidgetManager;
import android.appwidget.AppWidgetProviderInfo;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;
import android.content.res.Resources;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.util.DisplayMetrics;
import android.util.Log;
import com.android.settings.ActivityPicker.PickAdapter;
import java.util.List;
/**
* Displays a list of {@link AppWidgetProviderInfo} widgets, along with any
* injected special widgets specified through
* {@link AppWidgetManager#EXTRA_CUSTOM_INFO} and
* {@link AppWidgetManager#EXTRA_CUSTOM_EXTRAS}.
* <p>
* When an installed {@link AppWidgetProviderInfo} is selected, this activity
* will bind it to the given {@link AppWidgetManager#EXTRA_APPWIDGET_ID},
* otherwise it will return the requested extras.
*/
public class AppWidgetPickActivity extends ActivityPicker
implements AppWidgetLoader.ItemConstructor<PickAdapter.Item>{
private static final String TAG = "AppWidgetPickActivity";
static final boolean LOGD = false;
List<PickAdapter.Item> mItems;
/**
* The allocated {@link AppWidgetManager#EXTRA_APPWIDGET_ID} that this
* activity is binding.
*/
private int mAppWidgetId;
private AppWidgetLoader<PickAdapter.Item> mAppWidgetLoader;
private AppWidgetManager mAppWidgetManager;
private PackageManager mPackageManager;
@Override
public void onCreate(Bundle icicle) {
mPackageManager = getPackageManager();
mAppWidgetManager = AppWidgetManager.getInstance(this);
mAppWidgetLoader = new AppWidgetLoader<PickAdapter.Item>
(this, mAppWidgetManager, this);
super.onCreate(icicle);
// Set default return data
setResultData(RESULT_CANCELED, null);
// Read the appWidgetId passed our direction, otherwise bail if not found
final Intent intent = getIntent();
if (intent.hasExtra(AppWidgetManager.EXTRA_APPWIDGET_ID)) {
mAppWidgetId = intent.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID,
AppWidgetManager.INVALID_APPWIDGET_ID);
} else {
finish();
}
}
/**
* Build and return list of items to be shown in dialog. This will mix both
* installed {@link AppWidgetProviderInfo} and those provided through
* {@link AppWidgetManager#EXTRA_CUSTOM_INFO}, sorting them alphabetically.
*/
@Override
protected List<PickAdapter.Item> getItems() {
mItems = mAppWidgetLoader.getItems(getIntent());
return mItems;
}
@Override
public PickAdapter.Item createItem(Context context, AppWidgetProviderInfo info, Bundle extras) {
CharSequence label = info.label;
Drawable icon = null;
if (info.icon != 0) {
try {
final Resources res = context.getResources();
final int density = res.getDisplayMetrics().densityDpi;
int iconDensity;
switch (density) {
case DisplayMetrics.DENSITY_MEDIUM:
iconDensity = DisplayMetrics.DENSITY_LOW;
case DisplayMetrics.DENSITY_TV:
iconDensity = DisplayMetrics.DENSITY_MEDIUM;
case DisplayMetrics.DENSITY_HIGH:
iconDensity = DisplayMetrics.DENSITY_MEDIUM;
case DisplayMetrics.DENSITY_XHIGH:
iconDensity = DisplayMetrics.DENSITY_HIGH;
case DisplayMetrics.DENSITY_XXHIGH:
iconDensity = DisplayMetrics.DENSITY_XHIGH;
default:
// The density is some abnormal value. Return some other
// abnormal value that is a reasonable scaling of it.
iconDensity = (int)((density*0.75f)+.5f);
}
Resources packageResources = mPackageManager.
getResourcesForApplication(info.provider.getPackageName());
icon = packageResources.getDrawableForDensity(info.icon, iconDensity);
} catch (NameNotFoundException e) {
Log.w(TAG, "Can't load icon drawable 0x" + Integer.toHexString(info.icon)
+ " for provider: " + info.provider);
}
if (icon == null) {
Log.w(TAG, "Can't load icon drawable 0x" + Integer.toHexString(info.icon)
+ " for provider: " + info.provider);
}
}
PickAdapter.Item item = new PickAdapter.Item(context, label, icon);
item.packageName = info.provider.getPackageName();
item.className = info.provider.getClassName();
item.extras = extras;
return item;
}
/**
* {@inheritDoc}
*/
@Override
public void onClick(DialogInterface dialog, int which) {
Intent intent = getIntentForPosition(which);
PickAdapter.Item item = mItems.get(which);
int result;
if (item.extras != null) {
// If these extras are present it's because this entry is custom.
// Don't try to bind it, just pass it back to the app.
setResultData(RESULT_OK, intent);
} else {
try {
Bundle options = null;
if (intent.getExtras() != null) {
options = intent.getExtras().getBundle(
AppWidgetManager.EXTRA_APPWIDGET_OPTIONS);
}
mAppWidgetManager.bindAppWidgetId(mAppWidgetId, intent.getComponent(), options);
result = RESULT_OK;
} catch (IllegalArgumentException e) {
// This is thrown if they're already bound, or otherwise somehow
// bogus. Set the result to canceled, and exit. The app *should*
// clean up at this point. We could pass the error along, but
// it's not clear that that's useful -- the widget will simply not
// appear.
result = RESULT_CANCELED;
}
setResultData(result, null);
}
finish();
}
/**
* Convenience method for setting the result code and intent. This method
* correctly injects the {@link AppWidgetManager#EXTRA_APPWIDGET_ID} that
* most hosts expect returned.
*/
void setResultData(int code, Intent intent) {
Intent result = intent != null ? intent : new Intent();
result.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, mAppWidgetId);
setResult(code, result);
}
}
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