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mouse location with a container drop tool [message #1398678]

Fri, 11 July 2014 08:19

Eclipse User

Hi,

I use a java external action to manage drag&drop (in a Container Drop tool).

In the java code, I try to retrieve the mouse location. For this I use

SiriusLayoutDataManager.INSTANCE.getData(abstractDNode);

but it always returns null.

Any idea why, see below full code ?

*****************************
public void execute(Collection<? extends EObject> selections, Map<String, Object> parameters) {
Object diagram = parameters.get("diagram");
Object elementToLookFor = parameters.get("element");

if (diagram instanceof DNodeContainer) {
DNodeContainer dNodeContainer = (DNodeContainer) diagram;
DDiagramElement diagElt = lookForElementInContainerByEObject(dNodeContainer, elementToLookFor);
if (diagElt instanceof AbstractDNode) {
AbstractDNode abstractDNode = (AbstractDNode) diagElt;
//retrieve mouse drop location
LayoutData layoutData = SiriusLayoutDataManager.INSTANCE.getData(abstractDNode);

//set view location
View view = SiriusGMFHelper.getGmfView(abstractDNode);
Node gmfnode = (Node) view;
Bounds bounds = (Bounds) gmfnode.getLayoutConstraint();
bounds.setX(layoutData.getLocation().x);
bounds.setY(layoutData.getLocation().y);

}
return;
}

Re: mouse location with a container drop tool [message #1401976 is a reply to message #1398678]

Wed, 16 July 2014 06:25

Eclipse User

Le 11/07/2014 14:19, Benoit Ries a écrit :
> Hi,

Hi Benoit,
>
> I use a java external action to manage drag&drop (in a Container Drop
> tool).
>
> In the java code, I try to retrieve the mouse location. For this I use
> SiriusLayoutDataManager.INSTANCE.getData(abstractDNode);

>
> but it always returns null.
> Any idea why, see below full code ?

It seems that the SiriusLayoutDataManager si populated after the
execution of the VSM drop tool's tasks.

Could you report a bug on the bugzilla ?

However, I am not sure you should do this in the tool, could you precise
your need, because after the tool execution, the Sirius model will be
updated and then the GMF Canonical refresh will update the GMF Notation
model. So the gmfnode you want to modify in your tool could be deleted
during the canonical refresh. The SiriusLayoutDataManager is used during
this refresh to get some layout data for the new created views. Your
external java action suggest it might require some improvements if it is
not able to handle your case.

>
> *****************************
> public void execute(Collection<? extends EObject> selections,
> Map<String, Object> parameters) {
> Object diagram = parameters.get("diagram");
> Object elementToLookFor = parameters.get("element");
> if (diagram instanceof DNodeContainer) {
> DNodeContainer dNodeContainer = (DNodeContainer) diagram;
> DDiagramElement diagElt =
> lookForElementInContainerByEObject(dNodeContainer, elementToLookFor);
> if (diagElt instanceof AbstractDNode) {
> AbstractDNode abstractDNode = (AbstractDNode) diagElt;
> //retrieve mouse drop location
> LayoutData layoutData =
> SiriusLayoutDataManager.INSTANCE.getData(abstractDNode);
>
> //set view location
> View view = SiriusGMFHelper.getGmfView(abstractDNode);
> Node gmfnode = (Node) view;
> Bounds bounds = (Bounds) gmfnode.getLayoutConstraint();
> bounds.setX(layoutData.getLocation().x);
> bounds.setY(layoutData.getLocation().y);
>
> }
> return;
> }

Regards,

Maxime

Re: mouse location with a container drop tool [message #1402681 is a reply to message #1401976]

Thu, 17 July 2014 06:39

Eclipse User

Hi Maxime,

find below, further details on my need and context:

- Firstly, I create representations using the synchronized elements mode then I hide all elements in the newly created representation.

- Secondly (and here is where I use the drop tool), the user populates the representation by dragging Model Explorer view elements and dropping them in the representations. At this moment with my current code I call the reveal method from HideFilterHelper and it works well.

"HideFilterHelper.INSTANCE.reveal(myDDiagramElementRelatedToDroppedSemanticElement);"

My issue is that the element will be revealed BUT NOT at the mouse location where the element was dropped, which is what I would like !

any help on this is greatly appreciated.

regards,
Benoît

Re: mouse location with a container drop tool [message #1402818 is a reply to message #1402681]

Thu, 17 July 2014 11:16

Eclipse User

Hello,

Here is a way to get your mouse location:

        IEditorPart editor = EclipseUIUtil.getActiveEditor();
        if (editor instanceof DiagramEditor) {
            DiagramEditor diagramEditor = (DiagramEditor) editor;
            DiagramEditPart diagramEditPart = diagramEditor.getDiagramEditPart();
            EditPartViewer viewer = diagramEditPart.getViewer();

            org.eclipse.swt.graphics.Point cursorLocation = Display.getCurrent().getCursorLocation();
            final FigureCanvas control = (FigureCanvas) viewer.getControl();
            final org.eclipse.swt.graphics.Point screenSWTPoint = control.toControl(cursorLocation);

            final Point screenPoint = new Point(screenSWTPoint.x, screenSWTPoint.y);
        }

As maxime said, could you report a bug about SiriusLayoutDataManager being set too late in the context of a drag and drop tool please?

Regards,
Steve

Re: mouse location with a container drop tool [message #1402929 is a reply to message #1402818]

Fri, 18 July 2014 08:05

Eclipse User

thanks Steve for the mouse location code, it works Smile

I have filed a bugzilla report here :
https://bugs.eclipse.org/bugs/show_bug.cgi?id=439877

regards,
Benoît

Re: mouse location with a container drop tool [message #1402930 is a reply to message #1402929]

Fri, 18 July 2014 08:11

Eclipse User

Le 18/07/2014 14:05, Benoit Ries a écrit :
> thanks Steve for the mouse location code, it works :)
>
> I have filed a bugzilla report here :
> https://bugs.eclipse.org/bugs/show_bug.cgi?id=439877
>
> regards,
> Benoît

Great!

Thanks for the bugzilla with the code sample. We will look into it.

Regards,
Steve

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