109 lines
3.8 KiB
C#
109 lines
3.8 KiB
C#
/*
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* Copyright (c) 2010-2020 Belledonne Communications SARL.
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*
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* This file is part of Linphone TutorialCS.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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using System;
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using Windows.ApplicationModel;
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using Windows.ApplicationModel.Activation;
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using Windows.UI.Xaml;
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using Windows.UI.Xaml.Controls;
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using Windows.UI.Xaml.Navigation;
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namespace _00_HelloWorld
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{
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/// <summary>
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/// Provides application-specific behavior to supplement the default Application class.
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/// </summary>
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sealed partial class App : Application
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{
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/// <summary>
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/// Initializes the singleton application object. This is the first line of authored code
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/// executed, and as such is the logical equivalent of main() or WinMain().
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/// </summary>
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public App()
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{
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this.InitializeComponent();
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this.Suspending += OnSuspending;
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}
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/// <summary>
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/// Invoked when the application is launched normally by the end user. Other entry points
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/// will be used such as when the application is launched to open a specific file.
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/// </summary>
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/// <param name="e">Details about the launch request and process.</param>
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protected override void OnLaunched(LaunchActivatedEventArgs e)
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{
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Frame rootFrame = Window.Current.Content as Frame;
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// Do not repeat app initialization when the Window already has content,
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// just ensure that the window is active
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if (rootFrame == null)
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{
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// Create a Frame to act as the navigation context and navigate to the first page
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rootFrame = new Frame();
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rootFrame.NavigationFailed += OnNavigationFailed;
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if (e.PreviousExecutionState == ApplicationExecutionState.Terminated)
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{
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//TODO: Load state from previously suspended application
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}
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// Place the frame in the current Window
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Window.Current.Content = rootFrame;
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}
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if (e.PrelaunchActivated == false)
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{
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if (rootFrame.Content == null)
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{
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// When the navigation stack isn't restored navigate to the first page,
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// configuring the new page by passing required information as a navigation
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// parameter
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rootFrame.Navigate(typeof(MainPage), e.Arguments);
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}
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// Ensure the current window is active
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Window.Current.Activate();
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}
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}
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/// <summary>
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/// Invoked when Navigation to a certain page fails
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/// </summary>
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/// <param name="sender">The Frame which failed navigation</param>
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/// <param name="e">Details about the navigation failure</param>
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private void OnNavigationFailed(object sender, NavigationFailedEventArgs e)
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{
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throw new Exception("Failed to load Page " + e.SourcePageType.FullName);
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}
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/// <summary>
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/// Invoked when application execution is being suspended. Application state is saved
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/// without knowing whether the application will be terminated or resumed with the contents
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/// of memory still intact.
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/// </summary>
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/// <param name="sender">The source of the suspend request.</param>
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/// <param name="e">Details about the suspend request.</param>
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private void OnSuspending(object sender, SuspendingEventArgs e)
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{
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var deferral = e.SuspendingOperation.GetDeferral();
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//TODO: Save application state and stop any background activity
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deferral.Complete();
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}
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}
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} |