internal static void KeyDown(VirtualKey key, out bool handled, bool acceptsReturn, ButtonBase control)
{
handled = false;
var isEnabled = control.IsEnabled;
var clickMode = control.ClickMode;
// Key presses can be ignored when disabled or in ClickMode.Hover
if (isEnabled &&
clickMode != ClickMode.Hover)
{
if (IsPress(key, acceptsReturn))
{
// Ignore the SPACE/ENTER/GAMEPAD_A key if we already have the pointer captured
// or if it had been pressed previously.
if (!control._isPointerCaptured && !control._isSpaceOrEnterKeyDown && !control._isNavigationAcceptOrGamepadAKeyDown)
{
if (key == VirtualKey.Space || (key == VirtualKey.Enter && acceptsReturn))
{
control._isSpaceOrEnterKeyDown = true;
}
else if (key == VirtualKey.GamepadA)
{
control._isNavigationAcceptOrGamepadAKeyDown = true;
}
control.IsPressed = true;
if (control.ClickMode == ClickMode.Press)
{
control.OnClick();
}
handled = true;
StartFocusPress(control);
}
}
// Any other keys pressed are irrelevant
else if (control._isSpaceOrEnterKeyDown || control._isNavigationAcceptOrGamepadAKeyDown)
{
control.IsPressed = false;
control._isSpaceOrEnterKeyDown = false;
control._isNavigationAcceptOrGamepadAKeyDown = false;
}
}
}
internal static void KeyUp(VirtualKey key, out bool handled, bool acceptsReturn, ButtonBase control)
{
handled = false;
var isEnabled = control.IsEnabled;
var clickMode = control.ClickMode;
// Key presses can be ignored when disabled or in xaml_controls::ClickMode.Hover or if any
// other key than SPACE, ENTER, or GAMEPAD_A was released.
if (isEnabled &&
clickMode != ClickMode.Hover &&
IsPress(key, acceptsReturn))
{
if (key == VirtualKey.Space || (key == VirtualKey.Enter && acceptsReturn))
{
control._isSpaceOrEnterKeyDown = false;
}
else if (key == VirtualKey.GamepadA)
{
control._isNavigationAcceptOrGamepadAKeyDown = false;
}
// If the pointer isn't in use, raise the Click event if we're in the
// correct click mode
if (!control._isPointerLeftButtonDown)
{
var iPressed = control.IsPressed;
if (iPressed && clickMode == ClickMode.Release)
{
control.OnClick();
}
control.IsPressed = false;
}
handled = true;
EndFocusPress(control);
}
}