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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.customization.model.grid;
import android.content.Context;
import android.os.Bundle;
import android.os.Handler;
import android.os.Looper;
import android.util.Log;
import androidx.annotation.Nullable;
import androidx.annotation.VisibleForTesting;
import androidx.lifecycle.LiveData;
import com.android.customization.model.CustomizationManager;
import com.android.customization.module.CustomizationInjector;
import com.android.customization.module.ThemesUserEventLogger;
import com.android.wallpaper.R;
import com.android.wallpaper.module.InjectorProvider;
import com.android.wallpaper.util.PreviewUtils;
import java.util.List;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
/**
* {@link CustomizationManager} for interfacing with the launcher to handle {@link GridOption}s.
*/
public class GridOptionsManager implements CustomizationManager<GridOption> {
private static final ExecutorService sExecutorService = Executors.newSingleThreadExecutor();
private static final String TAG = "GridOptionsManager";
private static GridOptionsManager sGridOptionsManager;
private final LauncherGridOptionsProvider mProvider;
private final ThemesUserEventLogger mEventLogger;
private int mGridOptionSize = -1;
/** Returns the {@link GridOptionsManager} instance. */
public static GridOptionsManager getInstance(Context context) {
if (sGridOptionsManager == null) {
Context appContext = context.getApplicationContext();
CustomizationInjector injector = (CustomizationInjector) InjectorProvider.getInjector();
ThemesUserEventLogger eventLogger = (ThemesUserEventLogger) injector.getUserEventLogger(
appContext);
sGridOptionsManager = new GridOptionsManager(
new LauncherGridOptionsProvider(appContext,
appContext.getString(R.string.grid_control_metadata_name)),
eventLogger);
}
return sGridOptionsManager;
}
@VisibleForTesting
GridOptionsManager(LauncherGridOptionsProvider provider, ThemesUserEventLogger logger) {
mProvider = provider;
mEventLogger = logger;
}
@Override
public boolean isAvailable() {
if (mGridOptionSize < 0) {
try {
mGridOptionSize = sExecutorService.submit(() -> {
List<GridOption> gridOptions = mProvider.fetch(/* reload= */true);
return gridOptions == null ? 0 : gridOptions.size();
}).get();
} catch (InterruptedException | ExecutionException e) {
Log.w(TAG, "could not get gridOptionSize", e);
}
}
return mGridOptionSize > 1 && mProvider.areGridsAvailable();
}
@Override
public void apply(GridOption option, Callback callback) {
int updated = mProvider.applyGrid(option.name);
if (updated == 1) {
mEventLogger.logGridApplied(option);
callback.onSuccess();
} else {
callback.onError(null);
}
}
@Override
public void fetchOptions(OptionsFetchedListener<GridOption> callback, boolean reload) {
sExecutorService.submit(() -> {
List<GridOption> gridOptions = mProvider.fetch(reload);
new Handler(Looper.getMainLooper()).post(() -> {
if (callback != null) {
if (gridOptions != null && !gridOptions.isEmpty()) {
callback.onOptionsLoaded(gridOptions);
} else {
callback.onError(null);
}
}
});
});
}
/**
* Returns an observable that receives a new value each time that the grid options are changed.
*/
public LiveData<Object> getOptionChangeObservable(@Nullable Handler handler) {
return mProvider.getOptionChangeObservable(handler);
}
/** Call through content provider API to render preview */
public void renderPreview(Bundle bundle, String gridName,
PreviewUtils.WorkspacePreviewCallback callback) {
mProvider.renderPreview(gridName, bundle, callback);
}
}
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