Eclipse Community Forums: GEF » When getCreateCommand() will be called?

Help

Home

Home » Eclipse Projects » GEF » When getCreateCommand() will be called?

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

When getCreateCommand() will be called? [message #162680]

Thu, 23 December 2004 13:59

Eclipse User

Originally posted by: zhlmmc.hotmail.com

If I write getCreateCommand() like this:
protected Command getCreateCommand(CreateRequest request) {
/*CreateCommand command = new CreateCommand();

Rectangle constraint = (Rectangle) getConstraintFor(request);

HelloModel model = (HelloModel) request.getNewObject();

model.setConstraint(constraint);

command.setContentsModel(getHost().getModel());
command.setHelloModel(model);
return command;*/
return null;
}
GEF will stop me dragging the component from palette to the
EditPartViewer,has this method been called before my operation?Otherwise
how could system know that this method returns null and should reject this
operation?

Thank you :)

Report message to a moderator

Re: When getCreateCommand() will be called? [message #162688 is a reply to message #162680]

Thu, 23 December 2004 17:21

Pratik Shah

Messages: 1077
Registered: July 2009

Senior Member

If you're doing click-and-drop, it will. But not with drag-and-drop (which
is native). Set a breakpoint in that method to see when it's being called.

"zhlmmc" <zhlmmc@hotmail.com> wrote in message
news:cqej09$rid$1@www.eclipse.org...
> If I write getCreateCommand() like this:
> protected Command getCreateCommand(CreateRequest request) {
> /*CreateCommand command = new CreateCommand();
>
> Rectangle constraint = (Rectangle) getConstraintFor(request);
>
> HelloModel model = (HelloModel) request.getNewObject();
>
> model.setConstraint(constraint);
>
> command.setContentsModel(getHost().getModel());
> command.setHelloModel(model);
> return command;*/
> return null;
> }
> GEF will stop me dragging the component from palette to the
> EditPartViewer,has this method been called before my operation?Otherwise
> how could system know that this method returns null and should reject this
> operation?
>
> Thank you :)
>

Report message to a moderator

Re: When getCreateCommand() will be called? [message #162711 is a reply to message #162680]

Thu, 23 December 2004 21:40

Eclipse User

Originally posted by: none.us.ibm.com

Do you have a TemplateTransferDropTarget on your graphical viewer? Put a
breakpoint in its handleDragOver or whatever the method is called.

"zhlmmc" <zhlmmc@hotmail.com> wrote in message
news:cqej09$rid$1@www.eclipse.org...
> If I write getCreateCommand() like this:
> protected Command getCreateCommand(CreateRequest request) {
> /*CreateCommand command = new CreateCommand();
>
> Rectangle constraint = (Rectangle) getConstraintFor(request);
>
> HelloModel model = (HelloModel) request.getNewObject();
>
> model.setConstraint(constraint);
>
> command.setContentsModel(getHost().getModel());
> command.setHelloModel(model);
> return command;*/
> return null;
> }
> GEF will stop me dragging the component from palette to the
> EditPartViewer,has this method been called before my operation?Otherwise
> how could system know that this method returns null and should reject this
> operation?
>
> Thank you :)
>

Report message to a moderator

Previous Topic:	Non printable layer and Outline Overview
Next Topic:	Problem with picture using plugin

Goto Forum:

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

]

Current Time: Fri Apr 26 06:23:23 GMT 2024

.:: Contact :: Home ::.

Breadcrumbs

Sign up to our Newsletter