/// <summary>
/// Method which occurs when a keyboard shortcut (or accelerator) is pressed.
/// Avoids unwanted AutoSuggestBox_SuggestionChosen invocations when pressing Up and Down keys.
/// </summary>
/// <param name="sender"></param>
/// <param name="args"></param>
private void AutoSuggestBox_ProcessKeyboardAccelerators(UIElement sender, ProcessKeyboardAcceleratorEventArgs args)
{
if (args.Key == VirtualKey.Down || args.Key == VirtualKey.Up)
{
args.Handled = true;
}
}
protected override void OnProcessKeyboardAccelerators(ProcessKeyboardAcceleratorEventArgs args)
{
if (args.Key == VirtualKey.Space)
{
args.Handled = true;
}
base.OnProcessKeyboardAccelerators(args);
}
private async void RichEditBox_ProcessKeyboardAccelerators(UIElement sender, ProcessKeyboardAcceleratorEventArgs args)
{
var itemsList = _suggestionsList.Items;
if (!_suggestionPopup.IsOpen || itemsList == null || itemsList.Count == 0)
{
return;
}
var key = args.Key;
switch (key)
{
case VirtualKey.Up when itemsList.Count == 1:
case VirtualKey.Down when itemsList.Count == 1:
args.Handled = true;
UpdateSuggestionsListSelectedItem(1);
break;
case VirtualKey.Up:
args.Handled = true;
_suggestionChoice = _suggestionChoice <= 0 ? itemsList.Count : _suggestionChoice - 1;
UpdateSuggestionsListSelectedItem(this._suggestionChoice);
break;
case VirtualKey.Down:
args.Handled = true;
_suggestionChoice = _suggestionChoice >= itemsList.Count ? 0 : _suggestionChoice + 1;
UpdateSuggestionsListSelectedItem(this._suggestionChoice);
break;
case VirtualKey.Enter when _suggestionsList.SelectedItem != null:
args.Handled = true;
await CommitSuggestionAsync(_suggestionsList.SelectedItem);
break;
case VirtualKey.Escape:
args.Handled = true;
ShowSuggestionsPopup(false);
break;
}
}
protected override void OnProcessKeyboardAccelerators(ProcessKeyboardAcceleratorEventArgs args)
{
base.OnProcessKeyboardAccelerators(args);
}
void IProcessKeyboardAcceleratorEventArgsResolver.Handled(ProcessKeyboardAcceleratorEventArgs e, bool handled) => e.Handled = handled;
bool IProcessKeyboardAcceleratorEventArgsResolver.Handled(ProcessKeyboardAcceleratorEventArgs e) => e.Handled;
VirtualKeyModifiers IProcessKeyboardAcceleratorEventArgsResolver.Modifiers(ProcessKeyboardAcceleratorEventArgs e) => e.Modifiers;
VirtualKey IProcessKeyboardAcceleratorEventArgsResolver.Key(ProcessKeyboardAcceleratorEventArgs e) => e.Key;
/// <summary> /// Sets a value that marks the event as handled. /// </summary> /// <param name="e">The requested <see cref="ProcessKeyboardAcceleratorEventArgs"/>.</param> /// <param name="handled"> /// <c>true</c> to mark the event handled. <c>false</c> to leave the event unhandled. The default is <c>false</c>. /// </param> public static void Handled(this ProcessKeyboardAcceleratorEventArgs e, bool handled) => Resolver.Handled(e, handled);
/// <summary> /// Gets a value that marks the event as handled. /// </summary> /// <param name="e">The requested <see cref="ProcessKeyboardAcceleratorEventArgs"/>.</param> /// <returns> /// <c>true</c> to mark the event handled. <c>false</c> to leave the event unhandled. The default is <c>false</c>. /// </returns> public static bool Handled(this ProcessKeyboardAcceleratorEventArgs e) => Resolver.Handled(e);
/// <summary> /// Gets the virtual key used to modify another keypress for a keyboard shortcut (accelerator). /// </summary> /// <param name="e">The requested <see cref="ProcessKeyboardAcceleratorEventArgs"/>.</param> /// <returns>The virtual key.</returns> public static VirtualKeyModifiers Modifiers(this ProcessKeyboardAcceleratorEventArgs e) => Resolver.Modifiers(e);
/// <summary> /// Gets the virtual key (used in conjunction with one or more modifier keys) for a keyboard shortcut (accelerator). /// </summary> /// <param name="e">The requested <see cref="ProcessKeyboardAcceleratorEventArgs"/>.</param> /// <returns>The virtual key.</returns> public static VirtualKey Key(this ProcessKeyboardAcceleratorEventArgs e) => Resolver.Key(e);
