DevForce Community Forum : DockPanelWorkspace. Reactivation of smartpart: error

DockPanelWorkspace. Reactivation of smartpart: error : as I remember, the problem is:...

Thu, 10 Jan 2008 01:38:30 -700

Author: DeLight
Subject: 631
Posted: 10-Jan-2008 at 1:38am

as I remember, the problem is:

    public void Show() {
      ...
      MainWorkspace.Show(MainView);
      if ( IsFirstShow ) OnFirstShow();
      ...
    }...
    private void OnFirstShow() {
      if ( IsFirstShow ) {
        IWorkspace editorWs = MainWorkspace;
        editorWs.SmartPartClosing += EditorClosingHandler;
        IsFirstShow = false;
      }
    }

in EntityEditorController.

2. MainWorkspace.Show(MainView) calls Form.ShowDialog() (in case of modal dialogs) so OnFirstShow() is not called until dialog window is closed. So editorWs.SmartPartClosing += EditorClosingHandler; is not called until dialog is closed. So SmartPartClosing event is not processed (not "not fired").

btw, solwed the "Reactivation of smartpart: error" problem with:

1. processing closing event in all pagecontrollers (not only editors).

mainWs.SmartPartClosing += PageClosingHandler;protected void PageClosingHandler(object sender, WorkspaceCancelEventArgs e)
{
if (e.SmartPart != MainView)
return; // not this Editor
PageClosingHandlerCore(sender, e);if (e.Cancel)
return;
Terminate(e);
}
protected virtual void PageClosingHandlerCore(object sender, WorkspaceCancelEventArgs e) { }

2. if we need the page to be hidden (not closed) when pushing the close button:

protected override void PageClosingHandlerCore(object sender, WorkspaceCancelEventArgs e){((IWorkspace) sender).Hide(this.MainView);
e.Cancel = true;
}

щьёрт, не заметил Russian Federation. ко мне можно и по-русски. а лучше в аське сразу - 376440623 (рабочая), 108588 (домашняя). опыт работы с кабаной почти год уже, поделиться не против.

Edited by DeLight - 10-Jan-2008 at 2:29am

DockPanelWorkspace. Reactivation of smartpart: error : Thank you very much, Bill!It is...

Sat, 29 Dec 2007 01:10:30 -700

Author: vecs
Subject: 631
Posted: 29-Dec-2007 at 1:10am

Thank you very much, Bill!
It is exactly what we needed.
This work perfect with DockPanelWorkspace too.

But I found it does not work with "ModalWindows" workspace when I set this:
((WindowSmartPartInfo)MainView.SmartPartInfo).Modal = true;
The reason is that controller.MainWorkspace.SmartPartClosing event not fired after dialog closing.

DockPanelWorkspace. Reactivation of smartpart: error : Well, you could try this: In...

Fri, 28 Dec 2007 16:50:18 -700

Author: Bill Jensen
Subject: 631
Posted: 28-Dec-2007 at 4:50pm

Well, you could try this:

In your PageController's static ShowPage() method, after calling the ShowPage base method, get the controller instance and setup a handler for the SmartPartClosing event of the main workspace:

// Get the controller instance

Page1PageController controller = GetPageController<Page1PageController>(pParentWorkItem, pPageWorkItemId);

// Handle the SmartPartClosing event (with an instance event handler)

controller.MainWorkspace.SmartPartClosing += new System.EventHandler<WorkspaceCancelEventArgs>(controller.MainWorkspace_SmartPartClosing);

Then add the handler:

// A SmartPart in the main workspace is closing

// Check to see if it's ours

private void MainWorkspace_SmartPartClosing(object sender, WorkspaceCancelEventArgs e)

{

// If it's our main view that's closing

if (e.SmartPart.Equals(this.MainView))

{

// Terminate this controlled workitem

// So a new controller will be created and initialized on the next Show() call

this.Terminate(e);

}

The Terminate(WorkspaceCancelEventArgs e) method is a a little bit tricky. It sets the cancel flag in the event args to true. If this isn't done, exceptions happen.

I've tried this briefly with a WindowWorkspace and it seems to work, but I'm not sure it will work with your DockPanelWorkspace.

Let me know if this helps.

Good luck,

Bill Jensen

DockPanelWorkspace. Reactivation of smartpart: error : Hello,I have made new...

Tue, 25 Dec 2007 02:55:15 -700

Author: vecs
Subject: 631
Posted: 25-Dec-2007 at 2:55am

Hello,

I have made new shell layout contained freeware DockPanelWorkspace from http://www.codeplex.com/cabext as "ShellContent":

But I am getting an exception when try to close and then reopen the same page.
Itseems that View (SmartPart) were disposed and removed from its WorkItemwhen I closed tab. So when I try to activate this View(SmartPart) again the PageController can not find this View andraises exception ("Cannot access a disposed object. Object name: '...'."). Or sometimes SmartPart removed from Workspace and "The smartpart is not present in the workspace" error raised when try to activate View second time.
BTW I found the same problem with ModalWindowsWorkspace ("The smartpart is not present in the workspace" error) on reactivation.

Any suggestions how to solve this problem?

For now I suppose one solution for this:
Find the way to dispose PageController when its MainView closed in DockWorkspace or in ModalWindowsWorkspace. But I dont know how implement this.

For a while I have disabled tabs closing so that tab once appeared remain alive till the end of user session. But IMHO it is not rational..

Edited by vecs - 27-Dec-2007 at 1:33am