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/*
* Copyright (C) 2016 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.model;
import android.util.Log;
import com.android.launcher3.AppInfo;
import com.android.launcher3.LauncherAppState;
import com.android.launcher3.LauncherModel;
import com.android.launcher3.LauncherModel.ModelUpdateTask;
import com.android.launcher3.LauncherModel.CallbackTask;
import com.android.launcher3.model.BgDataModel.Callbacks;
import com.android.launcher3.WorkspaceItemInfo;
import com.android.launcher3.util.ComponentKey;
import com.android.launcher3.util.ItemInfoMatcher;
import com.android.launcher3.widget.WidgetListRowEntry;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.concurrent.Executor;
/**
* Extension of {@link ModelUpdateTask} with some utility methods
*/
public abstract class BaseModelUpdateTask implements ModelUpdateTask {
private static final boolean DEBUG_TASKS = false;
private static final String TAG = "BaseModelUpdateTask";
private LauncherAppState mApp;
private LauncherModel mModel;
private BgDataModel mDataModel;
private AllAppsList mAllAppsList;
private Executor mUiExecutor;
public void init(LauncherAppState app, LauncherModel model,
BgDataModel dataModel, AllAppsList allAppsList, Executor uiExecutor) {
mApp = app;
mModel = model;
mDataModel = dataModel;
mAllAppsList = allAppsList;
mUiExecutor = uiExecutor;
}
@Override
public final void run() {
if (!mModel.isModelLoaded()) {
if (DEBUG_TASKS) {
Log.d(TAG, "Ignoring model task since loader is pending=" + this);
}
// Loader has not yet run.
return;
}
execute(mApp, mDataModel, mAllAppsList);
}
/**
* Execute the actual task. Called on the worker thread.
*/
public abstract void execute(
LauncherAppState app, BgDataModel dataModel, AllAppsList apps);
/**
* Schedules a {@param task} to be executed on the current callbacks.
*/
public final void scheduleCallbackTask(final CallbackTask task) {
final Callbacks callbacks = mModel.getCallback();
mUiExecutor.execute(() -> {
Callbacks cb = mModel.getCallback();
if (callbacks == cb && cb != null) {
task.execute(callbacks);
}
});
}
public ModelWriter getModelWriter() {
// Updates from model task, do not deal with icon position in hotseat. Also no need to
// verify changes as the ModelTasks always push the changes to callbacks
return mModel.getWriter(false /* hasVerticalHotseat */, false /* verifyChanges */);
}
public void bindUpdatedWorkspaceItems(final ArrayList<WorkspaceItemInfo> updatedShortcuts) {
if (!updatedShortcuts.isEmpty()) {
scheduleCallbackTask(c -> c.bindWorkspaceItemsChanged(updatedShortcuts));
}
}
public void bindDeepShortcuts(BgDataModel dataModel) {
final HashMap<ComponentKey, Integer> shortcutMapCopy =
new HashMap<>(dataModel.deepShortcutMap);
scheduleCallbackTask(callbacks -> callbacks.bindDeepShortcutMap(shortcutMapCopy));
}
public void bindUpdatedWidgets(BgDataModel dataModel) {
final ArrayList<WidgetListRowEntry> widgets =
dataModel.widgetsModel.getWidgetsList(mApp.getContext());
scheduleCallbackTask(c -> c.bindAllWidgets(widgets));
}
public void deleteAndBindComponentsRemoved(final ItemInfoMatcher matcher) {
getModelWriter().deleteItemsFromDatabase(matcher);
// Call the components-removed callback
scheduleCallbackTask(c -> c.bindWorkspaceComponentsRemoved(matcher));
}
public void bindApplicationsIfNeeded() {
if (mAllAppsList.getAndResetChangeFlag()) {
AppInfo[] apps = mAllAppsList.copyData();
scheduleCallbackTask(c -> c.bindAllApplications(apps));
}
}
}
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