michael@0: /* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
michael@0:  * This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: package org.mozilla.gecko.home;
michael@0: 
michael@0: import org.mozilla.gecko.home.HomeConfig.PanelConfig;
michael@0: import org.mozilla.gecko.home.HomeConfig.OnReloadListener;
michael@0: 
michael@0: import android.content.Context;
michael@0: import android.support.v4.content.AsyncTaskLoader;
michael@0: 
michael@0: import java.util.List;
michael@0: 
michael@0: public class HomeConfigLoader extends AsyncTaskLoader<HomeConfig.State> {
michael@0:     private final HomeConfig mConfig;
michael@0:     private HomeConfig.State mConfigState;
michael@0: 
michael@0:     private final Context mContext;
michael@0: 
michael@0:     public HomeConfigLoader(Context context, HomeConfig homeConfig) {
michael@0:         super(context);
michael@0:         mContext = context;
michael@0:         mConfig = homeConfig;
michael@0:     }
michael@0: 
michael@0:     @Override
michael@0:     public HomeConfig.State loadInBackground() {
michael@0:         return mConfig.load();
michael@0:     }
michael@0: 
michael@0:     @Override
michael@0:     public void deliverResult(HomeConfig.State configState) {
michael@0:         if (isReset()) {
michael@0:             mConfigState = null;
michael@0:             return;
michael@0:         }
michael@0: 
michael@0:         mConfigState = configState;
michael@0:         mConfig.setOnReloadListener(new ForceReloadListener());
michael@0: 
michael@0:         if (isStarted()) {
michael@0:             super.deliverResult(configState);
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     @Override
michael@0:     protected void onStartLoading() {
michael@0:         if (mConfigState != null) {
michael@0:             deliverResult(mConfigState);
michael@0:         }
michael@0: 
michael@0:         if (takeContentChanged() || mConfigState == null) {
michael@0:             forceLoad();
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     @Override
michael@0:     protected void onStopLoading() {
michael@0:         cancelLoad();
michael@0:     }
michael@0: 
michael@0:     @Override
michael@0:     public void onCanceled(HomeConfig.State configState) {
michael@0:         mConfigState = null;
michael@0:     }
michael@0: 
michael@0:     @Override
michael@0:     protected void onReset() {
michael@0:         super.onReset();
michael@0: 
michael@0:         // Ensure the loader is stopped.
michael@0:         onStopLoading();
michael@0: 
michael@0:         mConfigState = null;
michael@0:         mConfig.setOnReloadListener(null);
michael@0:     }
michael@0: 
michael@0:     private class ForceReloadListener implements OnReloadListener {
michael@0:         @Override
michael@0:         public void onReload() {
michael@0:             onContentChanged();
michael@0:         }
michael@0:     }
michael@0: }