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Normal Topic Get Selected item in code (Read 8513 times)
Hai
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Get Selected item in code
Jan 7th, 2009 at 10:45am
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Hi there
Your control looks very nice and I'm checking if it will swit our needs...
1. I can not find the way of determining the Selected item. ActiveItem return the last added node, not the selected one.

2. Do you plan of connecting this control to WorkflowFoundation and/or XOML output ?

3. How do I delete a node in code (C#)

4. How do I prevent the user from resizing shapes and adding links ? (Behavior.DoNothink was not the solution...)

Many Thanks

Hai

Many Thanks
  
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Stoyo
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Re: Get Selected item in code
Reply #1 - Jan 7th, 2009 at 12:03pm
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Hi,

We've changed a lot of things since the first beta, so try this updated version:

https://mindfusion.eu/_beta/DiagramLite.0.9.3.zip

1.

Code
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private void OnTestClick(object sender, RoutedEventArgs e)
{
	foreach (DiagramItem item in diagram.Selection.Items)
	{
		ShapeNode shape = item as ShapeNode;
		if (shape != null)
			shape.Text = "i'm selected";
	}

	ShapeNode active = diagram.ActiveItem as ShapeNode;
	if (active != null)
		active.Text = "the active item";
}


2. What do you mean by "connecting" it?

3.

Code
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diagram.Items.Remove(diagram.Nodes[0]);


4. Could be done by handling the LinkCreating and NodeModifying events

Code
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private void OnLinkCreating(object sender, LinkValidationEventArgs e)
{
	e.CancelDrag();
}

private void OnNodeModifying(object sender, NodeValidationEventArgs e)
{
	if (e.AdjustmentHandle != AdjustmentHandles.Move)
		e.CancelDrag();
}


however NodeModifying does not work correctly at this time. We'll try to fix it later this week.

I hope that helps,
Stoyan
  
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Hai
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Re: Get Selected item in code
Reply #2 - Jan 7th, 2009 at 1:26pm
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Hi Stoyo

Thx for the detailed reply… I’m will get into it soon…

Regarding the WF/XOML….

Your control can load and save flow-charts in an XML format…
Workflow foundation is a very good out of the box solution for managing workflows, and is based on XOML files (which are XML files in a specific format)

One of the major problems of the WF is that it works on the server. If your control could give a XOML representation of the flow (into a DOM object or even a string) which can then be sent to the server you will solve a big problem in the industry (Visualize WF on a client-server applications)

Microsoft will love you for that… Wink

Now, I let the user create a flow (this why I use C# in silverlight… I draw the workflow according to the user selections) and then I’ll use a workaround at the moment to send it to the WF but if you will enable this option in the future it will be a great boost for the emerging community of WF & Silverlight users…

TaTa
Hai
  
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Hai
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Re: Get Selected item in code
Reply #3 - Jan 7th, 2009 at 2:31pm
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Hi Stoyan

All was just as you’ve said Smiley

Please inform me when the next version will be available (NodeModifying thing…)

Many Thanks

Hai

haib@innovashare.com
  
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Stoyo
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Re: Get Selected item in code
Reply #4 - Jan 7th, 2009 at 2:43pm
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Hi Hai,

That's great Wink We'll check the Workflow Foundation thing after we release v1 of the control.

Stoyan
  
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Hai
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Re: Get Selected item in code
Reply #5 - Feb 24th, 2009 at 9:02am
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Hi Stoyan

Any news with the WF XOML ?

hai
  
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Stoyo
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Re: Get Selected item in code
Reply #6 - Feb 25th, 2009 at 1:59pm
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Not yet. Let us finish with the basic features first, before moving to such advanced subjects 8)
  
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Hai
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Re: Get Selected item in code
Reply #7 - Feb 26th, 2009 at 2:09pm
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Hi Stoyan
I'm fine with that…
So let me ask 2 basic questions… Roll Eyes

1. Do you have an Undo / Redo option ? planned maybe ?
2. Is there a way to position the text of a node under the image instead of the center or should I wait for the 1.0.2 version ?
Many thanks
Hai
  
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Stoyo
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Re: Get Selected item in code
Reply #8 - Feb 27th, 2009 at 7:43am
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Hi Hai,

1. We have undo/redo in the controls for other platforms, so I suppose we'll port it to Silverlight version as well.

2. Wait for V1.0.2 if you need this for ShapeNodes. Otherwise create a custom control and host it inside ControlNodes.

I hope that helps,
Stoyan
  
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