How to use SaveStateEventArgs class of AppUIBasics.Common package

Best WinAppDriver code snippet using AppUIBasics.Common.SaveStateEventArgs

NavigationHelper.cs

Source:NavigationHelper.cs Github

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...131 public void OnNavigatedFrom(NavigationEventArgs e)132 {133 var frameState = SuspensionManager.SessionStateForFrame(this.Frame);134 var pageState = new Dictionary<string, object>();135 this.SaveState?.Invoke(this, new SaveStateEventArgs(pageState));136 frameState[_pageKey] = pageState;137 }138 #endregion139 }140 /// <summary>141 /// RootFrameNavigationHelper registers for standard mouse and keyboard142 /// shortcuts used to go back and forward. There should be only one143 /// RootFrameNavigationHelper per view, and it should be associated with the144 /// root frame.145 /// </summary>146 /// <example>147 /// To make use of RootFrameNavigationHelper, create an instance of the148 /// RootNavigationHelper such as in the constructor of your root page.149 /// <code>150 /// public MyRootPage()151 /// {152 /// this.InitializeComponent();153 /// this.rootNavigationHelper = new RootNavigationHelper(MyFrame);154 /// }155 /// </code>156 /// </example>157 [Windows.Foundation.Metadata.WebHostHidden]158 public class RootFrameNavigationHelper159 {160 private Frame Frame { get; set; }161 SystemNavigationManager systemNavigationManager;162 private Microsoft.UI.Xaml.Controls.NavigationView CurrentNavView { get; set; }163 /// <summary>164 /// Initializes a new instance of the <see cref="RootNavigationHelper"/> class.165 /// </summary>166 /// <param name="rootFrame">A reference to the top-level frame.167 /// This reference allows for frame manipulation and to register navigation handlers.</param>168 public RootFrameNavigationHelper(Frame rootFrame, Microsoft.UI.Xaml.Controls.NavigationView currentNavView)169 {170 this.Frame = rootFrame;171 this.Frame.Navigated += (s, e) =>172 {173 // Update the Back button whenever a navigation occurs.174 UpdateBackButton();175 };176 this.CurrentNavView = currentNavView;177 // Handle keyboard and mouse navigation requests178 this.systemNavigationManager = SystemNavigationManager.GetForCurrentView();179 systemNavigationManager.BackRequested += SystemNavigationManager_BackRequested;180 // must register back requested on navview181 if (ApiInformation.IsApiContractPresent("Windows.Foundation.UniversalApiContract", 6))182 {183 CurrentNavView.BackRequested += NavView_BackRequested;184 }185 // Listen to the window directly so we will respond to hotkeys regardless186 // of which element has focus.187 Window.Current.CoreWindow.Dispatcher.AcceleratorKeyActivated +=188 CoreDispatcher_AcceleratorKeyActivated;189 Window.Current.CoreWindow.PointerPressed +=190 this.CoreWindow_PointerPressed;191 }192 private void NavView_BackRequested(Microsoft.UI.Xaml.Controls.NavigationView sender, Microsoft.UI.Xaml.Controls.NavigationViewBackRequestedEventArgs args)193 {194 TryGoBack();195 }196 private bool TryGoBack()197 {198 // don't go back if the nav pane is overlayed199 if (this.CurrentNavView.IsPaneOpen && (this.CurrentNavView.DisplayMode == Microsoft.UI.Xaml.Controls.NavigationViewDisplayMode.Compact || this.CurrentNavView.DisplayMode == Microsoft.UI.Xaml.Controls.NavigationViewDisplayMode.Minimal))200 {201 return false;202 }203 bool navigated = false;204 if (this.Frame.CanGoBack)205 {206 this.Frame.GoBack();207 navigated = true;208 }209 210 return navigated;211 }212 private bool TryGoForward()213 {214 bool navigated = false;215 if (this.Frame.CanGoForward)216 {217 this.Frame.GoForward();218 navigated = true;219 }220 return navigated;221 }222 private void SystemNavigationManager_BackRequested(object sender, BackRequestedEventArgs e)223 {224 if (!e.Handled)225 {226 e.Handled = TryGoBack();227 }228 }229 private void UpdateBackButton()230 {231 if (ApiInformation.IsApiContractPresent("Windows.Foundation.UniversalApiContract", 6))232 {233 this.CurrentNavView.IsBackEnabled = this.Frame.CanGoBack ? true : false;234 } else235 {236 systemNavigationManager.AppViewBackButtonVisibility = this.Frame.CanGoBack ? AppViewBackButtonVisibility.Visible : AppViewBackButtonVisibility.Collapsed;237 }238 239 }240 /// <summary>241 /// Invoked on every keystroke, including system keys such as Alt key combinations.242 /// Used to detect keyboard navigation between pages even when the page itself243 /// doesn't have focus.244 /// </summary>245 /// <param name="sender">Instance that triggered the event.</param>246 /// <param name="e">Event data describing the conditions that led to the event.</param>247 private void CoreDispatcher_AcceleratorKeyActivated(CoreDispatcher sender,248 AcceleratorKeyEventArgs e)249 {250 var virtualKey = e.VirtualKey;251 // Only investigate further when Left, Right, or the dedicated Previous or Next keys252 // are pressed253 if ((e.EventType == CoreAcceleratorKeyEventType.SystemKeyDown ||254 e.EventType == CoreAcceleratorKeyEventType.KeyDown) &&255 (virtualKey == VirtualKey.Left || virtualKey == VirtualKey.Right ||256 (int)virtualKey == 166 || (int)virtualKey == 167))257 {258 var coreWindow = Window.Current.CoreWindow;259 var downState = CoreVirtualKeyStates.Down;260 bool menuKey = (coreWindow.GetKeyState(VirtualKey.Menu) & downState) == downState;261 bool controlKey = (coreWindow.GetKeyState(VirtualKey.Control) & downState) == downState;262 bool shiftKey = (coreWindow.GetKeyState(VirtualKey.Shift) & downState) == downState;263 bool noModifiers = !menuKey && !controlKey && !shiftKey;264 bool onlyAlt = menuKey && !controlKey && !shiftKey;265 if (((int)virtualKey == 166 && noModifiers) ||266 (virtualKey == VirtualKey.Left && onlyAlt))267 {268 // When the previous key or Alt+Left are pressed navigate back269 e.Handled = TryGoBack();270 }271 else if (((int)virtualKey == 167 && noModifiers) ||272 (virtualKey == VirtualKey.Right && onlyAlt))273 {274 // When the next key or Alt+Right are pressed navigate forward275 e.Handled = TryGoForward();276 }277 }278 }279 /// <summary>280 /// Invoked on every mouse click, touch screen tap, or equivalent interaction.281 /// Used to detect browser-style next and previous mouse button clicks282 /// to navigate between pages.283 /// </summary>284 /// <param name="sender">Instance that triggered the event.</param>285 /// <param name="e">Event data describing the conditions that led to the event.</param>286 private void CoreWindow_PointerPressed(CoreWindow sender,287 PointerEventArgs e)288 {289 var properties = e.CurrentPoint.Properties;290 // Ignore button chords with the left, right, and middle buttons291 if (properties.IsLeftButtonPressed || properties.IsRightButtonPressed ||292 properties.IsMiddleButtonPressed)293 return;294 // If back or forward are pressed (but not both) navigate appropriately295 bool backPressed = properties.IsXButton1Pressed;296 bool forwardPressed = properties.IsXButton2Pressed;297 if (backPressed ^ forwardPressed)298 {299 e.Handled = true;300 if (backPressed) this.TryGoBack();301 if (forwardPressed) this.TryGoForward();302 }303 }304 }305 /// <summary>306 /// Represents the method that will handle the <see cref="NavigationHelper.LoadState"/>event307 /// </summary>308 public delegate void LoadStateEventHandler(object sender, LoadStateEventArgs e);309 /// <summary>310 /// Represents the method that will handle the <see cref="NavigationHelper.SaveState"/>event311 /// </summary>312 public delegate void SaveStateEventHandler(object sender, SaveStateEventArgs e);313 /// <summary>314 /// Class used to hold the event data required when a page attempts to load state.315 /// </summary>316 public class LoadStateEventArgs : EventArgs317 {318 /// <summary>319 /// The parameter value passed to <see cref="Frame.Navigate(Type, object)"/>320 /// when this page was initially requested.321 /// </summary>322 public object NavigationParameter { get; private set; }323 /// <summary>324 /// A dictionary of state preserved by this page during an earlier325 /// session. This will be null the first time a page is visited.326 /// </summary>327 public Dictionary<string, object> PageState { get; private set; }328 /// <summary>329 /// Initializes a new instance of the <see cref="LoadStateEventArgs"/> class.330 /// </summary>331 /// <param name="navigationParameter">332 /// The parameter value passed to <see cref="Frame.Navigate(Type, object)"/>333 /// when this page was initially requested.334 /// </param>335 /// <param name="pageState">336 /// A dictionary of state preserved by this page during an earlier337 /// session. This will be null the first time a page is visited.338 /// </param>339 public LoadStateEventArgs(object navigationParameter, Dictionary<string, object> pageState)340 : base()341 {342 this.NavigationParameter = navigationParameter;343 this.PageState = pageState;344 }345 }346 /// <summary>347 /// Class used to hold the event data required when a page attempts to save state.348 /// </summary>349 public class SaveStateEventArgs : EventArgs350 {351 /// <summary>352 /// An empty dictionary to be populated with serializable state.353 /// </summary>354 public Dictionary<string, object> PageState { get; private set; }355 /// <summary>356 /// Initializes a new instance of the <see cref="SaveStateEventArgs"/> class.357 /// </summary>358 /// <param name="pageState">An empty dictionary to be populated with serializable state.</param>359 public SaveStateEventArgs(Dictionary<string, object> pageState)360 : base()361 {362 this.PageState = pageState;363 }364 }365}...

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SaveStateEventArgs

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1using System;2using System.Collections.Generic;3using System.IO;4using System.Linq;5using System.Runtime.InteropServices.WindowsRuntime;6using Windows.ApplicationModel;7using Windows.ApplicationModel.Activation;8using Windows.ApplicationModel.Core;9using Windows.Foundation;10using Windows.Foundation.Collections;11using Windows.UI.Core;12using Windows.UI.ViewManagement;13using Windows.UI.Xaml;14using Windows.UI.Xaml.Controls;15using Windows.UI.Xaml.Controls.Primitives;16using Windows.UI.Xaml.Data;17using Windows.UI.Xaml.Input;18using Windows.UI.Xaml.Media;19using Windows.UI.Xaml.Navigation;20{21 {22 public App()23 {24 this.InitializeComponent();25 this.Suspending += OnSuspending;26 }27 protected override void OnLaunched(LaunchActivatedEventArgs e)28 {29 Frame rootFrame = Window.Current.Content as Frame;30 if (rootFrame == null)31 {32 rootFrame = new Frame();33 SuspensionManager.RegisterFrame(rootFrame, "AppFrame");

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SaveStateEventArgs

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1using Common;2using System;3using System.Collections.Generic;4using System.IO;5using System.Linq;6using System.Runtime.InteropServices.WindowsRuntime;7using Windows.ApplicationModel;8using Windows.ApplicationModel.Activation;9using Windows.Foundation;10using Windows.Foundation.Collections;11using Windows.UI.Xaml;12using Windows.UI.Xaml.Controls;13using Windows.UI.Xaml.Controls.Primitive;14using Windows.UI.Xaml.Data;15using Windows.UI.Xaml.Input;16using Windows.UI.Xaml.Media;17using Windows.UI.Xaml.Navigation;18{19 {20 public App()21 {22 this.InitializeComponent();23 this.Suspending += OnSuspending;24 }25 protected override void OnLaunched(LaunchActivatedEventArgs e)26 {27 if (System.Diagnostics.Debugger.IsAttached)28 {29 this.DebugSettings.EnableFrameRateCounter = true;30 }31 Frame rootFrame = Window.Current.Content as Frame;32 if (rootFrame == null)33 {34 rootFrame = new Frame();35 SuspensionManager.RegisterFrame(rootFrame, "AppFrame");36 rootFrame.Language = Windows.Globalization.ApplicationLanguages.Languages[0];37 if (e.PreviousExecutionState == ApplicationExecutionState.Terminated)38 {39 {40 SuspensionManager.RestoreAsync().GetResults();41 }42 catch (SuspensionManagerException)43 {

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SaveStateEventArgs

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1using AppUIBasics.Common;2using Windows.UI.Xaml;3using Windows.UI.Xaml.Controls;4using Windows.UI.Xaml.Navigation;5{6 {7 public SaveStatePage()8 {9 this.InitializeComponent();10 }11 protected override void OnNavigatedTo(NavigationEventArgs e)12 {13 if (e.Parameter is SaveStateEventArgs)14 {15 var saveStateEventArgs = e.Parameter as SaveStateEventArgs;16 if (saveStateEventArgs.PageState != null)17 {18 if (saveStateEventArgs.PageState.ContainsKey("TextBoxContent"))19 {20 TextBoxContent.Text = saveStateEventArgs.PageState["TextBoxContent"].ToString();21 }22 }23 }24 }25 protected override void OnNavigatingFrom(NavigatingCancelEventArgs e)26 {27 var saveStateEventArgs = new SaveStateEventArgs();28 saveStateEventArgs.PageState["TextBoxContent"] = TextBoxContent.Text;29 e.Parameter = saveStateEventArgs;30 }31 }32}33using Windows.UI.Xaml.Controls;34using Windows.UI.Xaml.Navigation;35{36 {37 public WebViewPage()38 {39 this.InitializeComponent();40 }41 protected override void OnNavigatedTo(NavigationEventArgs e)42 {43 if (e.Parameter != null)44 {45 WebViewContent.Navigate(new System.Uri(e.Parameter.ToString()));46 }47 }48 }49}50using System;51using System.Collections.Generic;52using System.IO;53using System.Linq;54using System.Runtime.InteropServices.WindowsRuntime;55using Windows.Foundation;56using Windows.Foundation.Collections;57using Windows.Storage;58using Windows.Storage.Pickers;59using Windows.Storage.Streams;60using Windows.UI.Popups;61using Windows.UI.Xaml;62using Windows.UI.Xaml.Controls;63using Windows.UI.Xaml.Controls.Primitives;64using Windows.UI.Xaml.Data;65using Windows.UI.Xaml.Input;66using Windows.UI.Xaml.Media;67using Windows.UI.Xaml.Navigation;68{69 {70 public WebViewPage()71 {72 this.InitializeComponent();73 }74 protected override void OnNavigatedTo(NavigationEventArgs e)75 {76 if (e

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SaveStateEventArgs

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1using AppUIBasics.Common;2using Windows.UI.Xaml;3using Windows.UI.Xaml.Controls;4using Windows.UI.Xaml.Navigation;5{6 {7 public SaveStatePage()8 {9 this.InitializeComponent();10 }11 protected override void OnNavigatedTo(NavigationEventArgs e)12 {13 if (e.Parameter != null)14 {15 var state = (SaveStateEventArgs)e.Parameter;16 if (state.PageState != null)17 {18 if (state.PageState.ContainsKey("TextBoxValue"))19 {20 TextBox.Text = (string)state.PageState["TextBoxValue"];21 }22 }23 }24 }25 protected override void OnNavigatingFrom(NavigatingCancelEventArgs e)26 {27 var state = new SaveStateEventArgs();28 state.PageState = new Windows.Storage.ApplicationDataCompositeValue();29 state.PageState["TextBoxValue"] = TextBox.Text;30 e.Parameter = state;31 }32 }33}34using AppUIBasics.Common;35using Windows.UI.Xaml;36using Windows.UI.Xaml.Controls;37using Windows.UI.Xaml.Navigation;38{39 {40 public SaveStatePage()41 {42 this.InitializeComponent();43 }44 protected override void OnNavigatedTo(NavigationEventArgs e)45 {46 if (e.Parameter != null)47 {48 var state = (SaveStateEventArgs)e.Parameter;49 if (state.PageState != null)50 {51 if (state.PageState.ContainsKey("TextBoxValue"))52 {53 TextBox.Text = (string)state.PageState["TextBoxValue"];54 }55 }56 }57 }58 protected override void OnNavigatingFrom(NavigatingCancelEventArgs e)59 {60 var state = new SaveStateEventArgs();61 state.PageState = new Windows.Storage.ApplicationDataCompositeValue();62 state.PageState["TextBoxValue"] = TextBox.Text;63 e.Parameter = state;64 }65 }66}67using AppUIBasics.Common;68using Windows.UI.Xaml;69using Windows.UI.Xaml.Controls;

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SaveStateEventArgs

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1using AppUIBasics.Common;2using Windows.UI.Xaml;3using Windows.UI.Xaml.Controls;4using Windows.UI.Xaml.Navigation;5{6 {7 public SaveStatePage()8 {9 this.InitializeComponent();10 }11 protected override void OnNavigatedTo(NavigationEventArgs e)12 {13 var state = e.Parameter as SaveStateEventArgs;14 if (state != null)15 {16 if (state.State.ContainsKey("text"))17 {18 text.Text = state.State["text"] as string;19 }20 }21 }22 protected override void OnNavigatingFrom(NavigatingCancelEventArgs e)23 {24 var state = new SaveStateEventArgs();25 state.State["text"] = text.Text;26 e.Parameter = state;27 }28 private void SaveState_Click(object sender, RoutedEventArgs e)29 {30 Frame.Navigate(typeof(SaveStatePage), new SaveStateEventArgs());31 }32 }33}34using AppUIBasics.Common;35using Windows.UI.Xaml;36using Windows.UI.Xaml.Controls;37using Windows.UI.Xaml.Navigation;38{39 {40 public SaveStatePage()41 {42 this.InitializeComponent();43 }44 protected override void OnNavigatedTo(NavigationEventArgs e)45 {46 var state = e.Parameter as SaveStateEventArgs;47 if (state != null)48 {49 if (state.State.ContainsKey("text"))50 {51 text.Text = state.State["text"] as string;52 }53 }54 }55 protected override void OnNavigatingFrom(NavigatingCancelEventArgs e)56 {57 var state = new SaveStateEventArgs();58 state.State["text"] = text.Text;59 e.Parameter = state;60 }61 private void SaveState_Click(object sender, RoutedEventArgs e)62 {63 Frame.Navigate(typeof(SaveStatePage), new SaveStateEventArgs());64 }65 }66}67using AppUIBasics.Common;68using Windows.UI.Xaml;69using Windows.UI.Xaml.Controls;70using Windows.UI.Xaml.Navigation;

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SaveStateEventArgs

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1using AppUIBasics.Common;2using AppUIBasics.Data;3using AppUIBasics.ViewModels;4using Windows.UI.Xaml;5using Windows.UI.Xaml.Controls;6using Windows.UI.Xaml.Navigation;7{8 {9 private NavigationHelper navigationHelper;10 private ObservableDictionary defaultViewModel = new ObservableDictionary();11 public Scenario4()12 {13 this.InitializeComponent();14 navigationHelper = new NavigationHelper(this);15 navigationHelper.LoadState += navigationHelper_LoadState;16 navigationHelper.SaveState += navigationHelper_SaveState;17 }18 {19 get { return this.navigationHelper; }20 }21 {22 get { return this.defaultViewModel; }23 }24 private void navigationHelper_LoadState(object sender, LoadStateEventArgs e)25 {

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SaveStateEventArgs

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1using System;2using System.Collections.Generic;3using System.IO;4using System.Linq;5using System.Runtime.InteropServices.WindowsRuntime;6using Windows.Foundation;7using Windows.Foundation.Collections;8using Windows.UI.Xaml;9using Windows.UI.Xaml.Controls;10using Windows.UI.Xaml.Controls.Primitives;11using Windows.UI.Xaml.Data;12using Windows.UI.Xaml.Input;13using Windows.UI.Xaml.Media;14using Windows.UI.Xaml.Navigation;15using AppUIBasics.Common;16{17 {18 private NavigationHelper navigationHelper;19 private ObservableDictionary defaultViewModel = new ObservableDictionary();20 public SaveState()21 {22 this.InitializeComponent();23 this.navigationHelper = new NavigationHelper(this);24 this.navigationHelper.LoadState += this.NavigationHelper_LoadState;25 this.navigationHelper.SaveState += this.NavigationHelper_SaveState;26 }27 {28 get { return this.navigationHelper; }29 }30 {31 get { return this.defaultViewModel; }32 }

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SaveStateEventArgs

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1using AppUIBasics.Common;2using Windows.UI.Xaml;3using Windows.UI.Xaml.Controls;4using Windows.UI.Xaml.Navigation;5{6 {7 public SaveStatePage()8 {9 this.InitializeComponent();10 }11 protected override void OnNavigatedTo(NavigationEventArgs e)12 {13 var args = e.Parameter as SaveStateEventArgs;14 if (args != null)15 {16 if (args.PageState != null)17 {18 if (args.PageState.ContainsKey("Text"))19 {20 textBlock.Text = args.PageState["Text"] as string;21 }22 }23 }24 }25 protected override void OnNavigatingFrom(NavigatingCancelEventArgs e)26 {27 var args = e.Parameter as SaveStateEventArgs;28 if (args != null)29 {30 args.PageState["Text"] = textBlock.Text;31 }32 }33 private void Button_Click(object sender, RoutedEventArgs e)34 {35 textBlock.Text = "Hello World";36 }37 }38}39protected override void OnNavigatedTo(NavigationEventArgs e)40 {41 var args = e.Parameter as SaveStateEventArgs;42 if (args != null)43 {44 if (args.PageState != null)45 {46 if (args.PageState.ContainsKey("Text"))47 {48 textBlock.Text = args.PageState["Text"] as string;49 }50 }51 }52 }53protected override void OnNavigatingFrom(NavigatingCancelEventArgs e)54 {55 var args = e.Parameter as SaveStateEventArgs;56 if (args != null)57 {58 args.PageState["Text"] = textBlock.Text;59 }60 }

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SaveStateEventArgs

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1using System;2using System.Collections.Generic;3using System.IO;4using System.Linq;5using System.Runtime.InteropServices.WindowsRuntime;6using Windows.ApplicationModel;7using Windows.ApplicationModel.Activation;8using Windows.Foundation;9using Windows.Foundation.Collections;10using Windows.UI.Xaml;11using Windows.UI.Xaml.Controls;12using Windows.UI.Xaml.Controls.Primitive;13using Windows.UI.Xaml.Data;14using Windows.UI.Xaml.Input;15using Windows.UI.Xaml.Media;16using Windows.UI.Xaml.Navigation;17{18 {19 public App()20 {21 this.InitializeComponent();22 this.Suspending += OnSuspending;23 }24 protected override void OnLaunched(LaunchActivatedEventArgs args)25 {26 Frame rootFrame = Window.Current.Content as Frame;27 if (rootFrame == null)28 {29 rootFrame = new Frame();

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