| /* |
| * Copyright (C) 2017 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.storagemanager.deletionhelper; |
| |
| import android.view.View; |
| |
| /** Handles whether or not to hide/show the loading progress spinner. */ |
| public class LoadingSpinnerController { |
| private boolean mHasLoadedACategory; |
| private View mListView; |
| private DeletionHelperActivity mParentActivity; |
| |
| /** |
| * Initializes the spinner with an activity that contains both a content view and a loading |
| * view. |
| */ |
| public LoadingSpinnerController(DeletionHelperActivity activity) { |
| mParentActivity = activity; |
| } |
| |
| /** |
| * Initializes the loading progress bar. |
| * |
| * @param listView A content view to potentially swap in for the loading screen. |
| */ |
| public void initializeLoading(View listView) { |
| mListView = listView; |
| if (!mHasLoadedACategory) { |
| setLoading(true); |
| } |
| } |
| |
| /** If a category loads, we should hide the loading progress bar. This hides the loading. */ |
| public void onCategoryLoad() { |
| mHasLoadedACategory = true; |
| setLoading(false); |
| } |
| |
| private void setLoading(boolean isLoading) { |
| if (mListView != null && mParentActivity.isLoadingVisible() != isLoading) { |
| mParentActivity.setLoading(mListView, isLoading, true); |
| } |
| } |
| } |