/// <summary>
/// When overridden in a derived class, is invoked whenever application code or internal processes call <see cref="M:System.Windows.FrameworkElement.ApplyTemplate"/>.
/// </summary>
public override void OnApplyTemplate()
{
base.OnApplyTemplate();
// OnAplyTemplate is executed then theme is changed
if (adorner != null)
{
/*bool isOpened = IsOpen;
* if (isOpened)
* {
* Hide();
* IsOpen = false;
* }
* Dispatcher.BeginInvoke(DispatcherPriority.Render, (ThreadStart)(() => {
* adorner.Clear();
* adorner = null;
* if (isOpened)
* {
* Dispatcher.BeginInvoke(DispatcherPriority.ApplicationIdle, (ThreadStart)(() => { IsOpen = true; }));
* }
* })); */
if (IsOpen)
{
Hide();
IsOpen = false;
// Clear adorner
adorner.Clear();
adorner = null;
/*// Remove adorner
* AdornerLayer layer = GetAdornerLayer(this);
* layer.Remove(adorner);
* // Clear adorner
* adorner.Clear();
* adorner = null;
* // Create new adorner
* Dispatcher.BeginInvoke(DispatcherPriority.SystemIdle, (ThreadStart)(() =>
* {
* if (adorner == null)
* {
* if (DesignerProperties.GetIsInDesignMode(this))
* {
* // TODO: in design mode it is required to use design time adorner
* FrameworkElement topLevelElement = (FrameworkElement)VisualTreeHelper.GetParent(this);
* double topOffset = this.TranslatePoint(new Point(0, this.ActualHeight), topLevelElement).Y;
* adorner = new BackstageAdorner(topLevelElement, Content, topOffset);
* }
* else
* {
* Window mainWindow = Window.GetWindow(this);
* if (mainWindow == null) return;
* FrameworkElement topLevelElement = (FrameworkElement)mainWindow.Content;
* if (topLevelElement == null) return;
* double topOffset = this.TranslatePoint(new Point(0, this.ActualHeight), topLevelElement).Y;
* adorner = new BackstageAdorner(topLevelElement, this.Content, topOffset);
* }
* }
* layer.Add(adorner);
* }));*/
}
else
{
// Clear adorner
adorner.Clear();
adorner = null;
}
}
}
// Opens backstage on an Adorner layer
private void Show()
{
if (!this.IsLoaded)
{
this.Loaded += this.OnDelayedShow;
return;
}
if (this.Content == null)
{
return;
}
var layer = GetAdornerLayer(this);
if (adorner == null)
{
if (DesignerProperties.GetIsInDesignMode(this))
{
// TODO: in design mode it is required to use design time adorner
var topLevelElement = (FrameworkElement)VisualTreeHelper.GetParent(this);
var topOffset = this.TranslatePoint(new Point(0, this.ActualHeight), topLevelElement).Y;
adorner = new BackstageAdorner(topLevelElement, Content, topOffset);
}
else
{
var mainWindow = Window.GetWindow(this);
if (mainWindow == null)
{
return;
}
var topLevelElement = (FrameworkElement)mainWindow.Content;
if (topLevelElement == null)
{
return;
}
var topOffset = this.TranslatePoint(new Point(0, this.ActualHeight), topLevelElement).Y;
adorner = new BackstageAdorner(topLevelElement, this.Content, topOffset);
}
}
layer.Add(adorner);
var ribbon = this.FindRibbon();
if (ribbon != null)
{
ribbon.TabControl.IsDropDownOpen = false;
ribbon.TabControl.HighlightSelectedItem = false;
ribbon.TabControl.RequestBackstageClose += this.OnTabControlRequestBackstageClose;
// Disable QAT & title bar
if (ribbon.QuickAccessToolBar != null)
{
ribbon.QuickAccessToolBar.IsEnabled = false;
}
if (ribbon.TitleBar != null)
{
ribbon.TitleBar.IsEnabled = false;
}
}
var window = Window.GetWindow(this);
if (window != null)
{
window.KeyDown += this.OnBackstageEscapeKeyDown;
savedMinWidth = window.MinWidth;
savedMinHeight = window.MinHeight;
this.SaveWindowSize(window);
if (savedMinWidth < 500)
{
window.MinWidth = 500;
}
if (savedMinHeight < 400)
{
window.MinHeight = 400;
}
window.SizeChanged += this.OnWindowSizeChanged;
// We have to collapse WindowsFormsHost while Backstage is open
this.CollapseWindowsFormsHosts(window);
}
var content = this.Content as IInputElement;
if (content != null)
{
content.Focus();
}
}