Add extension point for acceleo generators.

[UrsZeidler]

We need to provide an extension point for the model to text engine. The extension point need to define:

• localized name
• imagepath
• localized description
• transformator type
  • pdf
  • text

The current acceleo plugin will use these extension point. So we can change inverse the dependency which is currentl bad design.

Other people could provide new model to text transformations.

[UrsZeidler]

The extension point is used by the default export dialog,

Identifier: de.urszeidler.shr5.m2t.de.urszeidler.shr5.m2t Since: 0.2.9 Description: A register point for acceleo based model to text transformations. Configuration Markup:

 <!ELEMENT extension (Transformer)*>
 <!ATTLIST extension
  point CDATA #REQUIRED
  id    CDATA #IMPLIED
  name  CDATA #IMPLIED>

  <!ELEMENT Transformer (TransformerMapping)+>
  <!ATTLIST Transformer
   acceleoGenerator CDATA #REQUIRED
   name             CDATA #REQUIRED
   description      CDATA #IMPLIED
  dialogImage      CDATA #IMPLIED>

Defines an acceleo generator which transform a given model object to a file.

• acceleoGenerator - The acceleo generator doing the job.
• name - The name of the transformation used to display it to the user.
• description - A text which explains the transformation.

• dialogImage - An image 48x48 for the dialog.

  <!ELEMENT TransformerMapping EMPTY>
  <!ATTLIST TransformerMapping
  class CDATA #IMPLIED>

All classes which the generator can make use of.

• class - An interface of the concret model type.

Examples: See de.urszeidler.shr5.acceleo.

 <Transformer
        acceleoGenerator="de.urszeidler.shr5.acceleo.sheets.BoardCharacterSheet"
        description="%Transformer.bbcharactersheet.description"
        dialogImage="images/textTransformations.png"
        name="%Transformer.bbcharactersheet.name">
     <TransformerMapping
           class="de.urszeidler.eclipse.shr5Management.NonPlayerCharacter"></TransformerMapping>
     <TransformerMapping
           class="de.urszeidler.eclipse.shr5Management.PlayerCharacter">
     </TransformerMapping>
     <TransformerMapping
           class="de.urszeidler.eclipse.shr5Management.CharacterGroup">
     </TransformerMapping>
  </Transformer>