Eclipse Community Forums: GEF » Drag an object from GEF and drop it in SWT composite

Help

Home

Home » Eclipse Projects » GEF » Drag an object from GEF and drop it in SWT composite

Show: Today's Messages :: Show Polls :: Message Navigator

Drag an object from GEF and drop it in SWT composite [message #1798368]

Fri, 16 November 2018 09:37

Shenwei Zheng

Messages: 22
Registered: December 2016

Junior Member

Use case: click mouse on a JavaFX node, drag it to SWT composite and release mouse.
Initial condition: no element is selected. SelectionModel is empty.
Expected result: the model behind the node will be transferred to SWT composite.

Just after mouse click, a drag source listener is triggerred and drag starts. Here I check the org.eclipse.gef.mvc.fx.models.SelectionModel and it is empty. Drag will not continue. I realize that the selected IVisualPart will be added in SelectionModel after the drag starts.

Does anyone have an idea how to solve this problem? Thank you in advance.

Bests
Shenwei

Report message to a moderator

Re: Drag an object from GEF and drop it in SWT composite [message #1802138 is a reply to message #1798368]

Fri, 01 February 2019 18:05

Matthias Wienand

Messages: 230
Registered: March 2015

Senior Member

Hi Shenwei,

GEF "solves" this problem internally by executing IOnClickHandler before IOnDragHandler. In your situation, you probably need to defer the selection-check until the mouse is moved after drag started. Alternatively, you could check the hover model instead of the selection model.

Best regards,
Matthias

Report message to a moderator

Previous Topic:	GEF5 And Drag And Drop
Next Topic:	Change parent of child on GEF5

Goto Forum:

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

]

Current Time: Thu Apr 25 23:30:36 GMT 2024

.:: Contact :: Home ::.

Breadcrumbs

Sign up to our Newsletter