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Unpinned panels close when using RadDropDownButton...

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Docking

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Rob asked on 10 Nov 2011, 09:48 PM

Please take a look at the following RadDocking control... it contains a main document host area and three simple panes, initially docked at the bottom.

1) Run the sample and unpin each of the bottom panes.
2) Hover the tab for the 3rd pane 'CCC' and notice that it opens revealing a RadDropDownButton control...
3) Click the RadDropDownButton to open it's radmenu. As soon as you hover the popup containing the radmenuitems, the RadDocking panel will start to slide closed...

<telerik:RadDocking>

<telerik:RadDocking.DocumentHost>

<telerik:RadSplitContainer>

<telerik:RadPaneGroup >

<telerik:RadPane CanUserClose="False">

<Border Background="Pink" BorderBrush="Red" BorderThickness="3" />

</telerik:RadPane>

</telerik:RadPaneGroup>

</telerik:RadSplitContainer>

</telerik:RadDocking.DocumentHost>

<telerik:RadSplitContainer InitialPosition="DockedBottom" telerik:DockingPanel.InitialSize="1,260">

<telerik:RadPaneGroup x:Name="paneGroup" TabStripPlacement="Bottom" TabOrientation="Horizontal">

<telerik:RadPane x:Name="paneA" Title="AAA" Header="AAA" CanUserPin="True" CanUserClose="False" CanFloat="False" CanDockInDocumentHost="False" ContextMenuTemplate="{x:Null}">

<Border Background="LightBlue" BorderBrush="Blue" BorderThickness="3" />

</telerik:RadPane>

<telerik:RadPane x:Name="paneB" Title="BBB" Header="BBB" CanUserPin="True" CanUserClose="False" CanFloat="False" CanDockInDocumentHost="False" ContextMenuTemplate="{x:Null}">

<Border Background="YellowGreen" BorderBrush="Green" BorderThickness="3" />

</telerik:RadPane>

<telerik:RadPane x:Name="paneC" Title="CCC" Header="CCC" CanUserPin="True" CanUserClose="False" CanFloat="False" CanDockInDocumentHost="False" ContextMenuTemplate="{x:Null}">

<Border Background="PaleGoldenrod" BorderBrush="Gold" BorderThickness="3">

<telerik:RadDropDownButton Content="Options" Height="50" Width="100">

<telerik:RadDropDownButton.DropDownContent>

<telerik:RadContextMenu StaysOpen="True">

<telerik:RadMenuItem Header="1" IsCheckable="True" />

<telerik:RadMenuItem Header="2" IsCheckable="True" />

<telerik:RadMenuItem IsSeparator="True"/>

<telerik:RadMenuItem Header="3" IsCheckable="True" />

<telerik:RadMenuItem Header="4" IsCheckable="True" />

</telerik:RadContextMenu>

</telerik:RadDropDownButton.DropDownContent>

</telerik:RadDropDownButton>

</Border>

</telerik:RadPane>

</telerik:RadPaneGroup>

</telerik:RadSplitContainer>

</telerik:RadDocking>

4 Answers, 1 is accepted

Accepted

answered on 14 Nov 2011, 05:31 PM

I've run into this same problem. It appears to be a bug in the docking control that occurs whenever a popup control is used. In the project I'm working on I have a common usercontrol called PaneView that all my views inherit from. The following code in this class seems to have solved the problem for me.

using System;

using System.Linq;

using System.Windows.Controls;

using System.Windows.Input;

using System.Windows.Media;

using Telerik.Windows.Controls;

namespace Workaround

{

public class PaneView : UserControl

{

public PaneView()

{

MouseLeave += OnMouseLeave;

MouseEnter += OnMouseEnter;

}

private int _popupCount;

private void OnMouseEnter(object sender, MouseEventArgs e)

{

_popupCount = VisualTreeHelper.GetOpenPopups().Count();

}

private void OnMouseLeave(object sender, MouseEventArgs e)

{

var pops = VisualTreeHelper.GetOpenPopups();

var newPopupCount = pops.Count();

if (newPopupCount <= _popupCount)

return;

_popupCount = newPopupCount;

ActivatePane();

}

private void ActivatePane()

{

var pane = Parent as RadPane;

var docking = this.ParentOfType<RadDocking>();

if (docking != null)

{

docking.ActivePane = pane;

}