How to build a code formatter with your editor within eclipse

1. 實作 MyEditor extends SourceViewerConfiguration
2. 覆寫 MyEditor.getContentFormatter
3. 實作 MyStrategy extends ContextBasedFormattingStrategy
4. 在 plugin.xml 加入: plugin.xml
5. 新增 Action

 <extension
         point="org.eclipse.ui.actionSets">
      <actionSet
            label="MyEditor Action set"
            description="Action set description"
            visible="false"
            id="MY_PLUGIN.myActionSet">
         <action
               definitionId="*MY_PLUGIN_ACTION_NAME*"
               label="Format"
               retarget="true"
               menubarPath="org.eclipse.dltk.ui.source.menu/editGroup"
               id="MY_PLUGIN.MY_ACTION_FORMAT_ID">
         </action>
       </actionSet>
</extension>


6. 新增 Key binding
7. 新增 Command
8. MyScriptEditor implementation override method createActions(){

 super.createActions();


 action= new TextOperationAction(DLTKEditorMessages.getBundleForConstructedKeys(), "Format.", this, ISourceViewer.FORMAT);


 action.setActionDefinitionId("*MY_PLUGIN.MY_ACTION_NAME*");
 setAction("Format", action);
 markAsStateDependentAction("Format", true);
 markAsSelectionDependentAction("Format", true);

}


9. Editor context parent 必須是:
"org.eclipse.dltk.ui.scriptEditorScope"