Eclipse Community Forums: GEF » Layout for multiple IFigure children of a PolylineConnection?

Help

Home

Home » Eclipse Projects » GEF » Layout for multiple IFigure children of a PolylineConnection?

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

Layout for multiple IFigure children of a PolylineConnection? [message #1059821]

Tue, 21 May 2013 18:06

Stephan Druskat

Messages: 104
Registered: October 2011
Location: Berlin, Germany

Senior Member

Is there a way to specify a layout for children of a PolylineConnection?

I want to add several Labels to a PolylineConnection at ConnectionLocator.MIDDLE without the use of a container figure for the labels.

Both PolylineConnection and Label have EditParts, and the label's model objects are children of the polyline connection's model objects.

Ideally I want to add all label children of a polyline to ConnectionLocator.MIDDLE in a ToolbarLayout...

     ________
     | NODE |
     --------
        |
        |
        |
      Label 1
      Label 2
      Label 3
        |
        |
        |
        |
        |
     ________
     | NODE |
     --------

Report message to a moderator

Re: Layout for multiple IFigure children of a PolylineConnection? [message #1063165 is a reply to message #1059821]

Wed, 12 June 2013 14:06

Jan Krakora

Messages: 477
Registered: December 2009
Location: Prague

Senior Member

You can set any LayoutManager to the PolylineConnection you want. By default it uses DelegatingLayout which gives
the layout responsibility to the children using Locator.relocate() provided as a constraint.

Report message to a moderator

Re: Layout for multiple IFigure children of a PolylineConnection? [message #1063554 is a reply to message #1063165]

Thu, 13 June 2013 12:06

Stephan Druskat

Messages: 104
Registered: October 2011
Location: Berlin, Germany

Senior Member

Thanks, Jan!

In the meantime, I've found a workaround with using ConnectionLocator.MIDDLE for the first child and using RelativeLocator for the rest (cf. this blog post)...

I think this is actually using the default DelegatingLayout you mention?

Report message to a moderator

Re: Layout for multiple IFigure children of a PolylineConnection? [message #1064047 is a reply to message #1063554]

Mon, 17 June 2013 11:53

Jan Krakora

Messages: 477
Registered: December 2009
Location: Prague

Senior Member

Yes, it is.

Actually, the DelegatingLayout is the default layout manager used on PolylineConnections and implementation of the Locator is a constraint for it.

It's the same as XYLayout and a Rectangle(it's constraint).

Report message to a moderator