Enrich capabilities around diagrams

[Aurelien-Pin]

Enrich capabilities around diagrams with:

• get and activate / deactivate the layers of a diagram
• get and activate / deactivate filters of a diagram
• export the diagram as image with selection of layers / filters to be activated (could be different from current status of the diagram)
• retrieve graphical elements from the diagram with:
  • the represented semantic element
  • their size / position (+ modification)
  • their aspect (color, width, style) (+ modification)
• allow creation of new diagrams and new diagram elements ...

[ylussaud]

Show/Hide a diagram Element:

org.eclipse.sirius.diagram.business.api.helper.graphicalfilters.HideFilterHelper.INSTANCE.hide(diagramElement);

[ylussaud]

To add a semantic element on a diagram this could be a good starting point. It will not provide any layout...