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/*
* Copyright (C) 2019 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.widget.custom;
import static com.android.launcher3.LauncherAppWidgetProviderInfo.CLS_CUSTOM_WIDGET_PREFIX;
import android.appwidget.AppWidgetManager;
import android.appwidget.AppWidgetProviderInfo;
import android.content.ComponentName;
import android.content.Context;
import android.os.Parcel;
import android.os.Process;
import android.util.SparseArray;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import com.android.launcher3.LauncherAppWidgetInfo;
import com.android.launcher3.LauncherAppWidgetProviderInfo;
import com.android.launcher3.uioverrides.plugins.PluginManagerWrapper;
import com.android.launcher3.util.MainThreadInitializedObject;
import com.android.launcher3.util.PackageUserKey;
import com.android.launcher3.widget.LauncherAppWidgetHostView;
import com.android.systemui.plugins.CustomWidgetPlugin;
import com.android.systemui.plugins.PluginListener;
import java.lang.ref.WeakReference;
import java.util.ArrayList;
import java.util.List;
import java.util.function.Consumer;
/**
* CustomWidgetManager handles custom widgets implemented as a plugin.
*/
public class CustomWidgetManager implements PluginListener<CustomWidgetPlugin> {
public static final MainThreadInitializedObject<CustomWidgetManager> INSTANCE =
new MainThreadInitializedObject<>(CustomWidgetManager::new);
/**
* auto provider Id is an ever-increasing number that serves as the providerId whenever a new
* custom widget has been connected.
*/
private int mAutoProviderId = 0;
private final SparseArray<CustomWidgetPlugin> mPlugins;
private final SparseArray<WeakReference<Context>> mContexts;
private final List<CustomAppWidgetProviderInfo> mCustomWidgets;
private final SparseArray<ComponentName> mWidgetsIdMap;
private Consumer<PackageUserKey> mWidgetRefreshCallback;
private CustomWidgetManager(Context context) {
mPlugins = new SparseArray<>();
mContexts = new SparseArray<>();
mCustomWidgets = new ArrayList<>();
mWidgetsIdMap = new SparseArray<>();
PluginManagerWrapper.INSTANCE.get(context)
.addPluginListener(this, CustomWidgetPlugin.class, true);
}
@Override
public void onPluginConnected(CustomWidgetPlugin plugin, Context context) {
mPlugins.put(mAutoProviderId, plugin);
mContexts.put(mAutoProviderId, new WeakReference<>(context));
List<AppWidgetProviderInfo> providers = AppWidgetManager.getInstance(context)
.getInstalledProvidersForProfile(Process.myUserHandle());
if (providers.isEmpty()) return;
Parcel parcel = Parcel.obtain();
providers.get(0).writeToParcel(parcel, 0);
parcel.setDataPosition(0);
CustomAppWidgetProviderInfo info = newInfo(mAutoProviderId, plugin, parcel, context);
parcel.recycle();
mCustomWidgets.add(info);
mWidgetsIdMap.put(mAutoProviderId, info.provider);
mWidgetRefreshCallback.accept(null);
mAutoProviderId++;
}
@Override
public void onPluginDisconnected(CustomWidgetPlugin plugin) {
int providerId = findProviderId(plugin);
if (providerId == -1) return;
mPlugins.remove(providerId);
mContexts.remove(providerId);
mCustomWidgets.remove(getWidgetProvider(providerId));
mWidgetsIdMap.remove(providerId);
}
/**
* Inject a callback function to refresh the widgets.
*/
public void setWidgetRefreshCallback(Consumer<PackageUserKey> cb) {
mWidgetRefreshCallback = cb;
}
/**
* Callback method to inform a plugin it's corresponding widget has been created.
*/
public void onViewCreated(LauncherAppWidgetHostView view) {
CustomAppWidgetProviderInfo info = (CustomAppWidgetProviderInfo) view.getAppWidgetInfo();
CustomWidgetPlugin plugin = mPlugins.get(info.providerId);
WeakReference<Context> context = mContexts.get(info.providerId);
if (plugin == null) return;
plugin.onViewCreated(context == null ? null : context.get(), view);
}
/**
* Returns the list of custom widgets.
*/
@NonNull
public List<CustomAppWidgetProviderInfo> getCustomWidgets() {
return mCustomWidgets;
}
/**
* Returns the widget id for a specific provider.
*/
public int getWidgetIdForCustomProvider(@NonNull ComponentName provider) {
int index = mWidgetsIdMap.indexOfValue(provider);
if (index >= 0) {
return LauncherAppWidgetInfo.CUSTOM_WIDGET_ID - mWidgetsIdMap.keyAt(index);
} else {
return AppWidgetManager.INVALID_APPWIDGET_ID;
}
}
/**
* Returns the widget provider in respect to given widget id.
*/
@Nullable
public LauncherAppWidgetProviderInfo getWidgetProvider(int widgetId) {
ComponentName cn = mWidgetsIdMap.get(LauncherAppWidgetInfo.CUSTOM_WIDGET_ID - widgetId);
for (LauncherAppWidgetProviderInfo info : mCustomWidgets) {
if (info.provider.equals(cn)) return info;
}
return null;
}
private static CustomAppWidgetProviderInfo newInfo(int providerId, CustomWidgetPlugin plugin,
Parcel parcel, Context context) {
CustomAppWidgetProviderInfo info = new CustomAppWidgetProviderInfo(
parcel, false, providerId);
info.provider = new ComponentName(
context.getPackageName(), CLS_CUSTOM_WIDGET_PREFIX + providerId);
info.label = plugin.getLabel(context);
info.resizeMode = plugin.getResizeMode(context);
info.spanX = plugin.getSpanX(context);
info.spanY = plugin.getSpanY(context);
info.minSpanX = plugin.getMinSpanX(context);
info.minSpanY = plugin.getMinSpanY(context);
return info;
}
private int findProviderId(CustomWidgetPlugin plugin) {
for (int i = 0; i < mPlugins.size(); i++) {
int providerId = mPlugins.keyAt(i);
if (mPlugins.get(providerId) == plugin) {
return providerId;
}
}
return -1;
}
}
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