Home / Community & Support / Developer Productivity Tools Forums / Silverlight > Window > Setting the native Window the RadWindow appears in on Silverlight 5

• I

  Posted on Feb 3, 2012 (permalink)

  In the existing Telerik RadControls there is no way to programmatically set the window a RadWindow appears in. They always appear in the Main Window. This is an issue for Silverlight 5 Out-of-Browser (OOB) applications making use of multiple windows.
  
  Please introduce a SetWindow function on WindowBase so that the Window the RadWindow appears in can be set. As per the new Silverlight 5 Popup.SetWindow instance method.
  
  For example the following should be possible:

  var rw = new RadWindow();

  rw.SetWindow(Window.GetWindow(this));

  rw.Content = new TextBlock { Text = "My Content" };

  rw.ShowDialog();

  The value passed to the SetWindow function should be used to determine the RootVisual of the RadWindow using Silverlight 5's new Window.GetWindow static method. It should also be used to set the window of any Popup controls related to the RadWindow.
  
  Alternatively at the very least please honour the Owner property in a multi-window environment.
  
  The following steps describe how this can be achieved against the 2011_3_1220 Silverlight RadControls source:
  
  Solution: Navigation_SL
  Project: Controls_SL
  Files: WindowBase.cs, WindowHostFactory.cs, MultiplePopupWindowHost.cs
  
  File: Window/WindowBase.cs
  
  Add a window field which defaults to the main window:

  private System.Windows.Window _window = System.Windows.Application.Current.MainWindow;

  Add a public SetWindow method (with comments):

  public void SetWindow(System.Windows.Window window)

  {

      _window = window;

  }

   

  Edit the ShowWindow method to additionally pass the _window field:

  this.host = WindowHostFactory.GetWindowHost(this, _window);

  
  File: Window/InternalWindow/WindowHostFactory.cs
  
  Edit the GetWindowHost method, adding a windowWindow argument and call CreateHost with it:

  public static IWindowHost GetWindowHost(WindowBase window, System.Windows.Window windowWindow)

  {

         var windowHost = CreateHost(windowWindow);

         windowHost.Setup(window);

         return windowHost;

  }

  Edit the CreateHost method, adding a window argument and use it to construct the MultiplePopupWindowHost instance:

  private static IWindowHost CreateHost(System.Windows.Window window)

   

         return new MultiplePopupWindowHost(window);

  
  File: Window/InternalWindow/MultiplePopupWindowHost.cs
  
  Add a window field:

  private System.Windows.Window _window;

  Add a constructor to take the window as an argument:

  public MultiplePopupWindowHost(System.Windows.Window window)

  {

      _window = window;

  }

  Edit the GetHostManager method to use the window field:

  protected override PopupHostManagerBase GetHostManager()

         {

                if (this.manager == null)

                {

                       var owner = FindRootOwner(this.DragableWindow);

              // Fix begin

              FrameworkElement root;

              if (owner == null)

              {

                  root = _window.Content;

              }

              else

              {

                  root = ApplicationHelper.GetRootVisual(owner);

              }

              // Fix end

              //var root = ApplicationHelper.GetRootVisual(owner);

              this.manager = new PopupHostManager(root);

                }

   

                return this.manager;

         }

  Edit the constructor to call SetWindow on the popup:

  public PopupHostManager(FrameworkElement root)

         : base(root)

  {

         this.popup = new System.Windows.Controls.Primitives.Popup

         {

               Child = this.Host = new Canvas()

         };

        this.popup.SetWindow(Window.GetWindow(root));

   

         if (root == null)

         {

               this.popup.Opened += this.OnPopupOpened;

         }

   

         this.popup.IsOpen = true;

  }

  File: Window/RadWindow.cs
  
  When the Owner property value is set so should the window be set:

  private ContentControl _owner = null;

  /// <summary>

  /// Gets or sets the Owner of the RadWindow.This is a dependency property.ull

  /// </summary>

  public ContentControl Owner

  {

     get { return _owner; }

     set

     {

        _owner = value;

        this.SetWindow(Window.GetWindow(_owner) ?? Application.Current.MainWindow);

     }

  }

  File: Window/InternalWindow/BrowserWindowPresenter.cs 
  Method: UpdateStartupLocation
  
  Finally with multiple windows now supported the behaviour of the WindowStartupLocation property when set to CenterScreen needs to be defined. I suggest that it defaults to the center of it's owner's window (rather than appear in a secondary window with the center position from the main window), i.e.:

              if (centerScreen)

              {

  #if SILVERLIGHT

              var window = Window.GetWindow(this);

              var plugin =

                  window == null

                  ? Application.Current.MainWindow.Content as FrameworkElement

                  : window.Content;

              var size =

                  new Size(plugin.ActualWidth / ApplicationHelper.ZoomFactor,

                           plugin.ActualHeight / ApplicationHelper.ZoomFactor);

  #else

                  var size = ApplicationHelper.ApplicationSize;

  #endif

   

                  location.X = Math.Floor((size.Width - presenterSize.Width) / 2);

                  location.Y = Math.Floor((size.Height - presenterSize.Height) / 2);

   

                  this.UpdatePresenterPosition(location.X, location.Y);

              }

  Reply

• Answer Boyan Boyan

  Posted on Feb 9, 2012 (permalink)

  Hello,
  
  We are aware of this problem. Unfortunately the fix for this issue will not make it for Q1 which is scheduled for next week, but we will make sure that it will be fixed in one of the internal builds after that and will be included in the service pack. I have logged it in our PITS as issue 9680, so you can follow its progress.
  
  Thank you for the detailed explanation and the code. We have added points to your account for the suggestion. Don't hesitate to contact us if you have other questions.
  
  Regards,
  Boyan
  the Telerik team

  Sharpen your .NET Ninja skills! Attend Q1 webinar week and get a chance to win a license! Book your seat now >>

  Reply

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