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Drag and Drop [message #902169]

Thu, 16 August 2012 08:26

Surya Kathayat

Messages: 44
Registered: July 2012

Member

Hi,

As you can see in the figure below, I have task nodes ("A" and "B") and a link connecting between these two nodes.

Now, I wish to implement a drag and drop feature, for example if I drag another task node ("C") and drop in between the link between "A" and "B", final diagram will be like "A"-link-"C"-link-"B".

For this to happen, (I think) I need to catch the selection event of link "A" to "B" while I drag and moveover node "C". How this could be done? Any suggestions will be highly appreciated.

index.php/fa/11204/0/

Best Regards
Surya

Attachment: dragdrop.gif
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Re: Drag and Drop [message #902180 is a reply to message #902169]

Thu, 16 August 2012 09:05

Michael Wenz

Messages: 1931
Registered: July 2009
Location: Walldorf, Germany

Senior Member

Surya,

in order to allow that operation, you need to define your own move feature
for your task shape and on canMove allow the drop onto the connection
(passed in via context.getTargetConnection).

In the move execution you will need to split up the existing connection into
two parts and add the moved shape as intermediate to the two new
connections.

Michael

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Re: Drag and Drop [message #902215 is a reply to message #902180]

Thu, 16 August 2012 12:04

Surya Kathayat

Messages: 44
Registered: July 2012

Member

Hi Michael,

Many thanks for the prompt response. Works fine if I drag a task node which is already in the editor. However it does not work if I select a task node from a Palette and drop to a link, any pointers?

index.php/fa/11205/0/

Best Regards
Surya

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Re: Drag and Drop [message #902337 is a reply to message #902215]

Fri, 17 August 2012 07:29

Miriam Baran

Messages: 16
Registered: May 2012

Junior Member

Hi,
isn't this because you only modified the moveShapeFeature? If you select your node from Palette it will have to be the create and add Features you have to modify.

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