CreationCommand

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Philippe DUL edited this page Jan 24, 2020 · 1 revision

Creation of elements contribution

It is possible to extends default creation of objects (to create another elements while creating one, to rename a newly created element or other.)

Creation tools: covered by this extension point -- Diagram Palette -- Add Element in project explorer -- Programatic calls such as modeling accelerators (i think of 'generation of component exchanges')
Other programmatic calls: (calling only the generic "constructor" of a model element) are not covered by this extension point -- Copy paste of an element -- Transitions, Patterns, REC/RPL -- other transformation mechanism

The extension point is provided by:

the plug-in org.polarsys.capella.common.menu.dynamic
and its identifier MDEMenuItemContribution.

The contribution to the extension point is done in the plugin.xml file of the plugin. Open this file and focus on the plugin.xml tab:

<?xml version="1.0" encoding="UTF-8"?>
<?eclipse version="3.4"?>
<extension point="org.polarsys.capella.common.menu.dynamic.MDEMenuItemContribution">
  <MDEMenuItemContribution
            class=""
            id="">
  </MDEMenuItemContribution>
</extension>

Detail of the different fields

class: a java class inheriting of org.polarsys.capella.common.menu.dynamic.contributions.IMDEMenuItemContribution
id: an unique identifier for the contribution

Sample

When creating a State Machine, we create an inner Region

The Java class defining the contribution
Its registration within plugin.xml
In MANIFEST/MANIFEST.MF file we need to depend on org.polarsys.capella.core.menu.dynamic which export org.polarsys.capella.common.menu.dynamic