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How do i add Alignment Actions etc. ? [message #210083]

Wed, 22 February 2006 14:48

Marcel Austenfeld

Messages: 160
Registered: July 2009

Senior Member

Hello,

i like to add some actions to my GEF editor.
How can i add alignment and snap to the grid actions to
my editor ?

Thanks in advance for any answer !

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Re: How do i add Alignment Actions etc. ? [message #210149 is a reply to message #210083]

Wed, 22 February 2006 21:12

Steven R. Shaw

Messages: 128
Registered: July 2009

Senior Member

Take a look at the logic example source code
(org.eclipse.gef.examples.logic)

@see LogicEditor.createActions()

-Steve

"Marcel" <marcel.au@web.de> wrote in message
news:18784644.1140619750068.JavaMail.root@cp1.javalobby.org...
> Hello,
>
> i like to add some actions to my GEF editor.
> How can i add alignment and snap to the grid actions to
> my editor ?
>
> Thanks in advance for any answer !

Report message to a moderator

Re: How do i add Alignment Actions etc. ? [message #210193 is a reply to message #210149]

Thu, 23 February 2006 09:17

Marcel Austenfeld

Messages: 160
Registered: July 2009

Senior Member

I've read through the logical example and tried to adapt the code.
The MatchWidthAction and MatchHeightAction are working.
But i can't activate the other actions. The are greyed
out in the toolbar. Also the snap to the grid action
doesn't work. Did i forget something to implement?

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Re: How do i add Alignment Actions etc. ? [message #210346 is a reply to message #210193]

Mon, 27 February 2006 01:39

Steven R. Shaw

Messages: 128
Registered: July 2009

Senior Member

It could be that you have a missing editpolicies that those actions are
relying upon?

The typical way UI is enabled / disabled is by sending a request to the
current selection (EditParts) and seeing if a command is returned. If a
command is returned, this indicates that UI can be enabled. If a null is
returned, then the action is grayed out. Most often, requests are handled
by the edit policies installed on an EditPart.

Hint:
- See what editpolicies installed in Logic example respond to / handle
requests for the action that you are interested in.

Regards,

Steve.

"Marcel" <marcel.au@web.de> wrote in message
news:13997094.1140686274465.JavaMail.root@cp1.javalobby.org...
> I've read through the logical example and tried to adapt the code.
> The MatchWidthAction and MatchHeightAction are working.
> But i can't activate the other actions. The are greyed
> out in the toolbar. Also the snap to the grid action
> doesn't work. Did i forget something to implement?

Report message to a moderator