Home » Eclipse Projects » GEF » How to get the result of a CreateElementCommand when doing Drag 'n Drop
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| Re: How to get the result of a CreateElementCommand when doing Drag 'n Drop [message #244789 is a reply to message #244764] |
Thu, 07 August 2008 14:08   |
Eclipse User |
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Originally posted by: lifesting.gmail.com
David Johnson wrote:
> Hi everyone,
>
> Apologies first as I've also posted this to the GMF group as I'm not sure
> if it's a GEF problem or a GMF problem actually - most of my code is
> generated with GMF, but from what I understand the custom DnD stuff is
> GEF. Anyway...
>
> I'm trying to do drag and drop from a tree view onto a diagram view,
> where on drop I create a new EditPart. I've managed to do this by doing
> something like:
>
> CustomEditPart selectedElement = ( CustomEditPart )getHost();
> IElementType type = CustomElementTypes.ICustomElement_2001;
> ViewAndElementDescriptor viewDescriptor = new ViewAndElementDescriptor
> ( new CreateElementRequestAdapter( new CreateElementRequest( type ) ),
> Node.class, ( ( IHintedType )type ).getSemanticHint(),
> selectedElement.getDiagramPreferencesHint() );
> cmd = selectedElement.getCommand( new CreateViewAndElementRequest
> (viewDescriptor) );
> return cmd;
>
> inside my CustomDragDropEditPolicy.getDropObjectsCommand(). So on drop,
> it calls the correct CustomCreateCommand.
>
> However I want to populate the new EditPart's properties with some values
> - so how do I get/select the newly created EditPart?
>
> Any ideas and input will be greatly appreciated.
>
> Cheers,
> -David
Open type org.eclipse.gmf.runtime.diagram.ui.tools.CreationTool, look at
it's method *performCreation*, you'll know how to retrieve new created
editpart.
method definiton:
protected void performCreation(int button) {
antiScroll = true;
EditPartViewer viewer = getCurrentViewer();
Command c = getCurrentCommand();
executeCurrentCommand();
selectAddedObject(viewer, DiagramCommandStack.getReturnValues(c));
antiScroll = false;
}
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| Re: How to get the result of a CreateElementCommand when doing Drag 'n Drop [message #244823 is a reply to message #244789] |
Fri, 08 August 2008 10:21 |
 David Johnson
Messages: 10
Registered: July 2009 |
Junior Member |
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Hi David,
OK, thanks for the help!
Regards,
-David
On Thu, 07 Aug 2008 22:08:45 +0800, David BY Chan wrote:
> David Johnson wrote:
>> Hi everyone,
>>
>> Apologies first as I've also posted this to the GMF group as I'm not
>> sure if it's a GEF problem or a GMF problem actually - most of my code
>> is generated with GMF, but from what I understand the custom DnD stuff
>> is GEF. Anyway...
>>
>> I'm trying to do drag and drop from a tree view onto a diagram view,
>> where on drop I create a new EditPart. I've managed to do this by doing
>> something like:
>>
>> CustomEditPart selectedElement = ( CustomEditPart )getHost();
>> IElementType type = CustomElementTypes.ICustomElement_2001;
>> ViewAndElementDescriptor viewDescriptor = new ViewAndElementDescriptor
>> ( new CreateElementRequestAdapter( new CreateElementRequest( type ) ),
>> Node.class, ( ( IHintedType )type ).getSemanticHint(),
>> selectedElement.getDiagramPreferencesHint() ); cmd =
>> selectedElement.getCommand( new CreateViewAndElementRequest
>> (viewDescriptor) );
>> return cmd;
>>
>> inside my CustomDragDropEditPolicy.getDropObjectsCommand(). So on drop,
>> it calls the correct CustomCreateCommand.
>>
>> However I want to populate the new EditPart's properties with some
>> values - so how do I get/select the newly created EditPart?
>>
>> Any ideas and input will be greatly appreciated.
>>
>> Cheers,
>> -David
> Open type org.eclipse.gmf.runtime.diagram.ui.tools.CreationTool, look at
> it's method *performCreation*, you'll know how to retrieve new created
> editpart.
>
> method definiton:
>
> protected void performCreation(int button) {
>
> antiScroll = true;
>
> EditPartViewer viewer = getCurrentViewer(); Command c =
> getCurrentCommand();
> executeCurrentCommand();
> selectAddedObject(viewer,
DiagramCommandStack.getReturnValues(c));
>
> antiScroll = false;
> }
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| Re: How to get the result of a CreateElementCommand when doing Drag 'n Drop [message #245815 is a reply to message #244823] |
Wed, 15 October 2008 06:58 |
| Eclipse User |
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Originally posted by: manojm.blr.interrasystems.com
Hi!
I am also facing the same kind of problem.
Is it solved at your end?
Please help me by your suggestion.
I would be very much thankful, if you could help with some code snippet.
Regards,
Manoj
David Johnson wrote:
> Hi David,
>
> OK, thanks for the help!
>
> Regards,
> -David
>
> On Thu, 07 Aug 2008 22:08:45 +0800, David BY Chan wrote:
>
>
>>David Johnson wrote:
>>
>>>Hi everyone,
>>>
>>>Apologies first as I've also posted this to the GMF group as I'm not
>>>sure if it's a GEF problem or a GMF problem actually - most of my code
>>>is generated with GMF, but from what I understand the custom DnD stuff
>>>is GEF. Anyway...
>>>
>>>I'm trying to do drag and drop from a tree view onto a diagram view,
>>>where on drop I create a new EditPart. I've managed to do this by doing
>>>something like:
>>>
>>>CustomEditPart selectedElement = ( CustomEditPart )getHost();
>>>IElementType type = CustomElementTypes.ICustomElement_2001;
>>>ViewAndElementDescriptor viewDescriptor = new ViewAndElementDescriptor
>>>( new CreateElementRequestAdapter( new CreateElementRequest( type ) ),
>>>Node.class, ( ( IHintedType )type ).getSemanticHint(),
>>>selectedElement.getDiagramPreferencesHint() ); cmd =
>>>selectedElement.getCommand( new CreateViewAndElementRequest
>>>(viewDescriptor) );
>>>return cmd;
>>>
>>>inside my CustomDragDropEditPolicy.getDropObjectsCommand(). So on drop,
>>>it calls the correct CustomCreateCommand.
>>>
>>>However I want to populate the new EditPart's properties with some
>>>values - so how do I get/select the newly created EditPart?
>>>
>>>Any ideas and input will be greatly appreciated.
>>>
>>>Cheers,
>>>-David
>>
>>Open type org.eclipse.gmf.runtime.diagram.ui.tools.CreationTool, look at
>>it's method *performCreation*, you'll know how to retrieve new created
>>editpart.
>>
>>method definiton:
>>
>>protected void performCreation(int button) {
>>
>> antiScroll = true;
>>
>> EditPartViewer viewer = getCurrentViewer(); Command c =
>> getCurrentCommand();
>> executeCurrentCommand();
>> selectAddedObject(viewer,
>
> DiagramCommandStack.getReturnValues(c));
>
>>
>> antiScroll = false;
>> }
>
>
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