protected override bool TranslateAcceleratorCore(ref MSG msg, ModifierKeys modifiers)
{
if (msg.message == WindowMessages.WM_KEYDOWN && msg.wParam.ToInt32() == VirtualKeyCodes.VK_TAB)
{
object currentlyFocusedElement = Windows.UI.Xaml.Input.FocusManager.GetFocusedElement();
if (ModifierKeys.Shift == modifiers)
{
Windows.UI.Xaml.DependencyObject firstFocusableElement = Windows.UI.Xaml.Input.FocusManager.FindFirstFocusableElement(null);
if (currentlyFocusedElement == firstFocusableElement)
{
bool focusDeparted = ((IKeyboardInputSink)this).KeyboardInputSite.OnNoMoreTabStops(new TraversalRequest(FocusNavigationDirection.Previous));
if (focusDeparted)
{
// need xaml to lose focus
Windows.UI.Xaml.Controls.Control currentlyFocusedControl = (Windows.UI.Xaml.Controls.Control)currentlyFocusedElement;
currentlyFocusedControl.IsTabStop = false;
currentlyFocusedControl.IsEnabled = false;
currentlyFocusedControl.IsTabStop = true;
currentlyFocusedControl.IsEnabled = true;
}
return(focusDeparted);
}
return(Windows.UI.Xaml.Input.FocusManager.TryMoveFocus(Windows.UI.Xaml.Input.FocusNavigationDirection.Previous));
}
else
{
Windows.UI.Xaml.DependencyObject lastFocusableElement = Windows.UI.Xaml.Input.FocusManager.FindLastFocusableElement(null);
if (currentlyFocusedElement == lastFocusableElement)
{
bool focusDeparted = ((IKeyboardInputSink)this).KeyboardInputSite.OnNoMoreTabStops(new TraversalRequest(FocusNavigationDirection.Next));
if (focusDeparted)
{
// need xaml to lose focus
Windows.UI.Xaml.Controls.Control currentlyFocusedControl = (Windows.UI.Xaml.Controls.Control)currentlyFocusedElement;
currentlyFocusedControl.IsTabStop = false;
currentlyFocusedControl.IsEnabled = false;
currentlyFocusedControl.IsTabStop = true;
currentlyFocusedControl.IsEnabled = true;
}
return(focusDeparted);
}
return(Windows.UI.Xaml.Input.FocusManager.TryMoveFocus(Windows.UI.Xaml.Input.FocusNavigationDirection.Next));
}
}
return(false);
}
/// <summary>
/// The go to state core.
/// </summary>
/// <param name="control">
/// The control.
/// </param>
/// <param name="templateRoot">
/// The template root.
/// </param>
/// <param name="stateName">
/// The state name.
/// </param>
/// <param name="group">
/// The group.
/// </param>
/// <param name="state">
/// The state.
/// </param>
/// <param name="useTransitions">
/// The use transitions.
/// </param>
/// <returns>
/// The <see cref="bool"/>.
/// </returns>
protected override bool GoToStateCore(
Windows.UI.Xaml.Controls.Control control,
FrameworkElement templateRoot,
string stateName,
VisualStateGroup group,
VisualState state,
bool useTransitions)
{
Debug.WriteLine(
"Custom: {0} with template root {1} going to state {2}",
control.GetType().FullName,
templateRoot.GetType().FullName,
stateName);
return(base.GoToStateCore(control, templateRoot, stateName, group, state, useTransitions));
}
public object BindAndActiveViewModel(Windows.UI.Xaml.Controls.Control view)
{
var viewModel = ViewModelLocator.LocateForViewType(view.GetType());
if (viewModel == null)
{
return(null);
}
ViewModelBinder.Bind(viewModel, view, null);
var activate = viewModel as IActivate;
if (activate != null)
{
activate.Activate();
}
return(viewModel);
}
/// <summary>
/// This method is used to wrap the Windows.UI.Xaml control in a new instance of a WindowsXamlHost.
/// </summary>
/// <param name="windowsXamlHost"></param>
/// <param name="control"></param>
/// <returns>Control</returns>
internal Control WrapInXamlHost(WindowsXamlHost windowsXamlHost, WUX.Controls.Control control)
{
windowsXamlHost.AutoSizeMode = System.Windows.Forms.AutoSizeMode.GrowOnly;
windowsXamlHost.InitialTypeName = null;
windowsXamlHost.Padding = new Padding(5);
WUX.Controls.StackPanel stackPanel = new WUX.Controls.StackPanel()
{
HorizontalAlignment = WUX.HorizontalAlignment.Stretch
};
stackPanel.Children.Add(control);
windowsXamlHost.Child = stackPanel;
if (windowsXamlHost.Width == 0)
{
windowsXamlHost.Height = ((int)control.Height > 0) ? (int)control.Height + 100 : 80;
windowsXamlHost.Width = ((int)control.Width > 0) ? (int)control.Width + 220 : 500;
}
return(windowsXamlHost);
}
internal static Windows.UI.Xaml.Controls.Control FindControl(Windows.UI.Xaml.DependencyObject root, String name)
{
var count = Windows.UI.Xaml.Media.VisualTreeHelper.GetChildrenCount(root);
for (int i = 0; i < count; i++)
{
var child = Windows.UI.Xaml.Media.VisualTreeHelper.GetChild(root, i);
var childControl = child as Windows.UI.Xaml.Controls.Control;
if (childControl != null)
{
if (childControl.Name == name)
{
return(childControl);
}
}
Windows.UI.Xaml.Controls.Control found = FindControl(child, name);
if (found != null && found.Name == name)
{
return(found);
}
}
return(null);
}
static void UnfocusNativeControl(Windows.UI.Xaml.Controls.Control control)
{
if (control == null)
{
return;
}
// "Unfocusing" doesn't really make sense on Windows; for accessibility reasons,
// something always has focus. So forcing the unfocusing of a control would normally
// just move focus to the next control, or leave it on the current control if no other
// focus targets are available. This is what happens if you use the "disable/enable"
// hack. What we *can* do is set the focus to the Page which contains Control;
// this will cause Control to lose focus without shifting focus to, say, the next Entry
// Work our way up the tree to find the containing Page
DependencyObject parent = control as Windows.UI.Xaml.Controls.Control;
while (parent != null && !(parent is Windows.UI.Xaml.Controls.Page))
{
parent = Windows.UI.Xaml.Media.VisualTreeHelper.GetParent(parent);
}
if (parent is Windows.UI.Xaml.Controls.Page _containingPage)
{
// Cache the tabstop setting
// var wasTabStop = _containingPage.IsTabStop;
// Controls can only get focus if they're a tabstop
_containingPage.IsTabStop = true;
_containingPage.Focus(FocusState.Programmatic);
// Restore the tabstop setting; that may cause the Page to lose focus,
// but it won't restore the focus to Control
//_containingPage.IsTabStop = wasTabStop;
}
}
public PageOptionsControl(Windows.UI.Xaml.Controls.Control control)
{
this._TargetControl = control;
control.SizeChanged += Control_SizeChanged;
}
public PageOptionsControl(Windows.UI.Xaml.Controls.Control control)
{
this._TargetControl = control;
control.SizeChanged += Control_SizeChanged;
}
