Java 编辑器使用笔记

1.在编辑器里显示行号：  

 CompositeRuler ruler = new CompositeRuler();       
 SourceViewer sv =new   SourceViewer(composite,ruler,SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL );         

LineNumberRulerColumn lineCol = new LineNumberRulerColumn();       
ruler.addDecorator(0, lineCol);       
Document doc = new Document(“第一行/n第二行/n第三行/n”);                
sv.setDocument(doc);

 2.打开编辑器：

IEditorInput editorInput=null;
String editorID=null;
             
 editorInput=mapEditorInput;
 editorID="test.editors.MapEditor";
             
 if(editorInput==null || editorID==null)
        return;
             
IWorkbenchPage workbenchPage=getViewSite().getPage();
IEditorPart editor=workbenchPage.findEditor(editorInput);
       try{
               workbenchPage.openEditor(editorInput, editorID);
        }catch(PartInitException e2){
               e2.printStackTrace();
        }