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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.launcher3;
import android.appwidget.AppWidgetHost;
import android.appwidget.AppWidgetHostView;
import android.appwidget.AppWidgetProviderInfo;
import android.content.Context;
import android.util.SparseArray;
import android.view.LayoutInflater;
import java.util.ArrayList;
/**
* Specific {@link AppWidgetHost} that creates our {@link LauncherAppWidgetHostView}
* which correctly captures all long-press events. This ensures that users can
* always pick up and move widgets.
*/
public class LauncherAppWidgetHost extends AppWidgetHost {
private final ArrayList<Runnable> mProviderChangeListeners = new ArrayList<Runnable>();
private final SparseArray<LauncherAppWidgetHostView> mViews = new SparseArray<>();
private Launcher mLauncher;
public LauncherAppWidgetHost(Launcher launcher, int hostId) {
super(launcher, hostId);
mLauncher = launcher;
}
@Override
protected LauncherAppWidgetHostView onCreateView(Context context, int appWidgetId,
AppWidgetProviderInfo appWidget) {
LauncherAppWidgetHostView view = new LauncherAppWidgetHostView(context);
mViews.put(appWidgetId, view);
return view;
}
@Override
public void startListening() {
try {
super.startListening();
} catch (Exception e) {
if (!Utilities.isBinderSizeError(e)) {
throw new RuntimeException(e);
}
// We're willing to let this slide. The exception is being caused by the list of
// RemoteViews which is being passed back. The startListening relationship will
// have been established by this point, and we will end up populating the
// widgets upon bind anyway. See issue 14255011 for more context.
}
}
public void addProviderChangeListener(Runnable callback) {
mProviderChangeListeners.add(callback);
}
public void removeProviderChangeListener(Runnable callback) {
mProviderChangeListeners.remove(callback);
}
protected void onProvidersChanged() {
if (!mProviderChangeListeners.isEmpty()) {
for (Runnable callback : new ArrayList<>(mProviderChangeListeners)) {
callback.run();
}
}
if (Utilities.ATLEAST_MARSHMALLOW) {
mLauncher.notifyWidgetProvidersChanged();
}
}
public AppWidgetHostView createView(Context context, int appWidgetId,
LauncherAppWidgetProviderInfo appWidget) {
if (appWidget.isCustomWidget) {
LauncherAppWidgetHostView lahv = new LauncherAppWidgetHostView(context);
LayoutInflater inflater = (LayoutInflater)
context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
inflater.inflate(appWidget.initialLayout, lahv);
lahv.setAppWidget(0, appWidget);
lahv.updateLastInflationOrientation();
return lahv;
} else {
try {
return super.createView(context, appWidgetId, appWidget);
} catch (Exception e) {
if (!Utilities.isBinderSizeError(e)) {
throw new RuntimeException(e);
}
// If the exception was thrown while fetching the remote views, let the view stay.
// This will ensure that if the widget posts a valid update later, the view
// will update.
LauncherAppWidgetHostView view = mViews.get(appWidgetId);
if (view == null) {
view = onCreateView(mLauncher, appWidgetId, appWidget);
}
view.setAppWidget(appWidgetId, appWidget);
view.switchToErrorView();
return view;
}
}
}
/**
* Called when the AppWidget provider for a AppWidget has been upgraded to a new apk.
*/
@Override
protected void onProviderChanged(int appWidgetId, AppWidgetProviderInfo appWidget) {
LauncherAppWidgetProviderInfo info = LauncherAppWidgetProviderInfo.fromProviderInfo(
mLauncher, appWidget);
super.onProviderChanged(appWidgetId, info);
// The super method updates the dimensions of the providerInfo. Update the
// launcher spans accordingly.
info.initSpans(mLauncher);
}
@Override
public void deleteAppWidgetId(int appWidgetId) {
super.deleteAppWidgetId(appWidgetId);
mViews.remove(appWidgetId);
}
@Override
protected void clearViews() {
super.clearViews();
mViews.clear();
}
}
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