1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
// Copyright (c) Microsoft. All rights reserved.
using System;
using System.Threading.Tasks;
using Windows.ApplicationModel;
using Windows.ApplicationModel.Activation;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Navigation;
using Windows.UI;
using File360.Common;
namespace File360
{
/// <summary>
/// Provides application-specific behavior to supplement the default Application class.
/// </summary>
sealed partial class App : Application
{
public string UserName = "User";
#if WINDOWS_PHONE_APP
ContinuationManager continuationManager;
#endif
/// <summary>
/// Initializes the singleton Application object. This is the first line of authored code
/// executed, and as such is the logical equivalent of main() or WinMain().
/// </summary>
public App()
{
this.InitializeComponent();
this.Suspending += OnSuspending;
}
public Color AccentColor { set; get; }
public Color ThemeColor { set; get; }
public Color FolderColor { set; get; }
public ColorList CurrentColorItem { set; get; }
private Frame CreateRootFrame()
{
Frame rootFrame = Window.Current.Content as Frame;
// Do not repeat app initialization when the Window already has content,
// just ensure that the window is active
if (rootFrame == null)
{
// Create a Frame to act as the navigation context and navigate to the first page
rootFrame = new Frame();
// Set the default language
rootFrame.Language = Windows.Globalization.ApplicationLanguages.Languages[0];
rootFrame.NavigationFailed += OnNavigationFailed;
// Place the frame in the current Window
Window.Current.Content = rootFrame;
}
return rootFrame;
}
private async Task RestoreStatusAsync(ApplicationExecutionState previousExecutionState)
{
// Do not repeat app initialization when the Window already has content,
// just ensure that the window is active
if (previousExecutionState == ApplicationExecutionState.Terminated)
{
// Restore the saved session state only when appropriate
try
{
await SuspensionManager.RestoreAsync();
}
catch (SuspensionManagerException)
{
//Something went wrong restoring state.
//Assume there is no state and continue
}
}
}
#if WINDOWS_PHONE_APP
/// <summary>
/// Handle OnActivated event to deal with File Open/Save continuation activation kinds
/// </summary>
/// <param name="e">Application activated event arguments, it can be casted to proper sub-type based on ActivationKind</param>
protected async override void OnActivated(IActivatedEventArgs e)
{
base.OnActivated(e);
continuationManager = new ContinuationManager();
Frame rootFrame = CreateRootFrame();
await RestoreStatusAsync(e.PreviousExecutionState);
if (rootFrame.Content == null)
{
rootFrame.Navigate(typeof(MainPage));
}
var continuationEventArgs = e as IContinuationActivatedEventArgs;
if (continuationEventArgs != null)
{
if (rootFrame != null)
{
// Call ContinuationManager to handle continuation activation
continuationManager.Continue(continuationEventArgs, rootFrame);
}
}
Window.Current.Activate();
}
#endif
/// <summary>
/// Invoked when the application is launched normally by the end user. Other entry points
/// will be used such as when the application is launched to open a specific file.
/// </summary>
/// <param name="e">Details about the launch request and process.</param>
protected async override void OnLaunched(LaunchActivatedEventArgs e)
{
Frame rootFrame = CreateRootFrame();
await RestoreStatusAsync(e.PreviousExecutionState);
//MainPage is always in rootFrame so we don't have to worry about restoring the navigation state on resume
rootFrame.Navigate(typeof(MainPage), e.Arguments);
// Ensure the current window is active
Window.Current.Activate();
}
/// <summary>
/// Invoked when Navigation to a certain page fails
/// </summary>
/// <param name="sender">The Frame which failed navigation</param>
/// <param name="e">Details about the navigation failure</param>
void OnNavigationFailed(object sender, NavigationFailedEventArgs e)
{
throw new Exception("Failed to load Page " + e.SourcePageType.FullName);
}
/// <summary>
/// Invoked when application execution is being suspended. Application state is saved
/// without knowing whether the application will be terminated or resumed with the contents
/// of memory still intact.
/// </summary>
/// <param name="sender">The source of the suspend request.</param>
/// <param name="e">Details about the suspend request.</param>
private async void OnSuspending(object sender, SuspendingEventArgs e)
{
var deferral = e.SuspendingOperation.GetDeferral();
await SuspensionManager.SaveAsync();
deferral.Complete();
}
}
}