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Use automation peer to trigger back button click in accelerator

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This commit is contained in:
Kenny Guo 2021-07-30 10:28:37 +08:00
commit 1113037013
2 changed files with 8 additions and 12 deletions
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2
src/Calculator/Views/MainPage.xaml.cs
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@ -578,7 +578,7 @@ namespace CalculatorApp
NarratorNotifier.Announce(announcement);
}
private void TitleBarBackButtonClick(object sender)
private void TitleBarBackButtonClick(object sender, RoutedEventArgs e)
{
CloseSettingsPopup();
}

18
src/Calculator/Views/TitleBar.xaml.cs
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@ -7,6 +7,8 @@ using Windows.UI;
using Windows.UI.Core;
using Windows.UI.ViewManagement;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Automation.Peers;
using Windows.UI.Xaml.Automation.Provider;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Media;
@ -51,9 +53,7 @@ namespace CalculatorApp
}));
public event Windows.UI.Xaml.RoutedEventHandler AlwaysOnTopClick;
public delegate void BackButtonClickEventHandler(object sender);
public event BackButtonClickEventHandler BackButtonClick;
public event Windows.UI.Xaml.RoutedEventHandler BackButtonClick;
private void OnLoaded(object sender, RoutedEventArgs e)
{
@ -103,7 +103,9 @@ namespace CalculatorApp
{
if (!e.Handled && BackButton.IsEnabled)
{
InvokeBackButton(sender) ;
var buttonPeer = new ButtonAutomationPeer(BackButton);
IInvokeProvider invokeProvider = buttonPeer.GetPattern(PatternInterface.Invoke) as IInvokeProvider;
invokeProvider.Invoke();
e.Handled = true;
}
@ -229,15 +231,9 @@ namespace CalculatorApp
AlwaysOnTopClick?.Invoke(this, e);
}
// Called when BackButton invoked, for example, by clicking, access key and etc.
private void InvokeBackButton(object sender)
{
BackButtonClick?.Invoke(this);
}
private void BackButton_Click(object sender, RoutedEventArgs e)
{
InvokeBackButton(sender);
BackButtonClick?.Invoke(this, e);
}
// Dependency properties for the color of the system title bar buttons