How to rise event for dock/orientation change?

[RoxanaC]

Hello!
I need an event for changing the docking orientation of a RadPane.
The purpose of it is that I need to have a layout if the RadPane is docked left or right and a different layout if it is docked on top or bottom, and I want to rearrange it (or at least change the orientation of the content)  whenever the user feels to modify the position of the pane.
How can I achieve this?

Thank you!
Roxana

[Miroslav Nedyalkov]

Hi Roxana ,

You could use the PaneStateChanged event of the Docking control - it is raised whenever a RadPane changes its state. Please refer to the following sample code (the RadDocking_PaneStateChanged method is an event handler for the PaneStateChanged event):

private void RadDocking_PaneStateChange(object sender, Telerik.Windows.RadRoutedEventArgs e)
{
    var pane = e.OriginalSource as RadPane;
    pane.Dispatcher.BeginInvoke(() => pane.Content = FindPanePosition(pane));
}

private static DockState? FindPanePosition(RadPane pane)
{
    if (pane.IsFloating)
    {
        return pane.IsDockable ? DockState.FloatingDockable : DockState.FloatingOnly;
    }

    var p = pane.Parent as ISplitItem;

    if (p == null)
    {
        // The pane is in AutoHideArea
        return null;
    }

    var container = p.ParentContainer;
    while (container != null)
    {
        p = container;
        container = p.ParentContainer;
    }

    container = p as RadSplitContainer;
    return RadDocking.GetDockState(container);
}

Hope this helps.

Greetings,
Miroslav Nedyalkov
the Telerik team

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[RoxanaC]

It's true, the PaneStateChange event was the answer to my question, thank you!
But the RadDocking.GetDockState(container) method always returns the same value equal with the InitialPosition no matter where the container is docked.

[RoxanaC]

Actually after more debug I found out that theRadDocking.GetDockState(container) method always returns the same value equal with the DockedLeft no matter where the container is docked OR the InitialPosition

[Miroslav Nedyalkov]

Hi Roxana Cocariu,

 The RadDocking.GetDockState method gets the value of the RadDocking.DockStateProperty attached property of the provided dependency object. In order to find its actual placement you should get the value of this property from the root-most split container. Please refer to the FindPanePosition method I sent in the previous post.

Kind regards,
Miroslav Nedyalkov
the Telerik team

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[RoxanaC]

Yes, I am referring to the FindPanePosition method and if the pane is not floating, the result is always the same
(DockedLeft )
Roxana

[Miroslav Nedyalkov]

Hello Roxana,

 I think I cannot clearly understand what you need. The code I sent you works just fine at my side - could you please send me a screen-shot or video what is wrong and how you think it should be - this should help me better understand what you need.

Best wishes,
Miroslav Nedyalkov
the Telerik team

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[RoxanaC]

Hey! Try to check this out!

<Window x:Class="DockStateFinder.Window1"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"
        xmlns:telerikDock="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls.Docking"
        Title="Window1">
    <Grid >
        <telerikDock:RadDocking x:Name="radDocking"
                                PaneStateChange="RadDocking_PaneStateChange">
            <telerikDock:RadDocking.DocumentHost>
                <telerik:RadSplitContainer>
                    <telerik:RadPaneGroup>
                        <telerik:RadDocumentPane Title="Description">
                            <telerik:RadDocumentPane.Content>
                                <TextBlock TextWrapping="Wrap"
                                           Text="On the Documents tab above press Ctrl + Mouse Left button to display the Popup Menu. You can use the same combination on every tab." />
                            </telerik:RadDocumentPane.Content>
                        </telerik:RadDocumentPane>
                        <telerik:RadPane Header="NotDragable"
                                         CanFloat="False">
                            <telerik:RadPane.Content>
                                <TextBlock TextWrapping="Wrap"
                                           Text="This pane cannot be dragged, because it has its property CanFloat set 'False'." />
                            </telerik:RadPane.Content>
                        </telerik:RadPane>
                    </telerik:RadPaneGroup>
                </telerik:RadSplitContainer>

            </telerikDock:RadDocking.DocumentHost>

            <telerikDock:RadSplitContainer x:Name="rsp1"
                                           Orientation="Vertical"
                                           InitialPosition="DockedRight">
                <telerikDock:RadPaneGroup x:Name="rpgInitRightGroup">
                    <telerikDock:RadPane x:Name="rpInitRight"
                                         Header="InitialPosition Right">
                        <TextBlock>some content here</TextBlock>
                    </telerikDock:RadPane>
                </telerikDock:RadPaneGroup>
            </telerikDock:RadSplitContainer>

            <telerikDock:RadSplitContainer x:Name="rspLeft"
                                           Orientation="Vertical"
                                           InitialPosition="DockedLeft">
                <telerikDock:RadPaneGroup x:Name="rpgInitLeftGroup">
                    <telerikDock:RadPane x:Name="rpInitLeft"
                                         Header="InitialPosition Left">
                        <TextBlock>some other content here</TextBlock></telerikDock:RadPane>
                </telerikDock:RadPaneGroup>
            </telerikDock:RadSplitContainer>
        </telerikDock:RadDocking>
    </Grid>
</Window>

and the code behind:

using System.Diagnostics;
using System.Windows;

using Telerik.Windows.Controls;
using Telerik.Windows.Controls.Docking;

namespace DockStateFinder {
    /// <summary>
    /// Interaction logic for Window1.xaml
    /// </summary>
    public partial class Window1 : Window {
        public Window1() {
            InitializeComponent();
        }

        private static DockState? FindPanePosition( RadPane pane ) {
            if (pane.IsFloating) {
                return pane.IsDockable ? DockState.FloatingDockable : DockState.FloatingOnly;
            }

            var p = pane.Parent as ISplitItem;

            if (p == null) {
                // The pane is in AutoHideArea
                return null;
            }

            var container = p.ParentContainer;
            while (container != null) {
                p = container;
                container = p.ParentContainer;
            }

            container = p as RadSplitContainer;
            return RadDocking.GetDockState( container );
        }

        private void RadDocking_PaneStateChange( object sender, Telerik.Windows.RadRoutedEventArgs e ) {
            var pane = e.OriginalSource as RadPane;
            //pane.Dispatcher.BeginInvoke( pane.Content = FindPanePosition( pane ) );
            DockState ds = (DockState)FindPanePosition( pane );

            Trace.WriteLine( "Dock state => " + ds );
        }
    }
}

Every time you change the docking position of the left or right pane (move they to either top, bottom, left, right) in the output will be printed the same value "Dock state => DockedLeft" ( and Dock state => FloatingDockable if the pane is not docked on any position). I need somehow to retrieve DockedBottom if I move it to the bottom of the RadDocking and so on for different positions

I hope I was more clear this time.
Thx! Roxana

[Kaloyan]

Hello Roxana Cocariu,

Sorry for the late response. Actually we have found an issue concerning this type of RadDocking functionality. We are working on its resolving, and hopefully it will be ready for the Q1 2010 official release.

Regards,
Kaloyan
the Telerik team

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[Lee]

Hi,

I am experiencing the same behaviour as described above (code always returns DockedLeft). Has this been resolved? Is there a different method to use now? I'm using RadControls WPF Q2 2010 SP1.

Thanks,
Lee

EDIT: I found another post that had the same code but that was invoking the call to FindPanePosition through the Dispatcher - and this makes all the difference.

[Kaloyan]

Hello Lee,

In the loaded event handler use the following code:

var position = radPane.ParentOfType<RadSplitContainer>().InitialPosition;

All the best,
Kaloyan
the Telerik team