gef 在viewpart中的实现 ，说明gef 的内容

 

final Composite bottomComposite = new Composite(parent, SWT.NONE);

final GridData gd_bottomComposite = new GridData(SWT.FILL, SWT.FILL, true, true);

bottomComposite.setLayoutData(gd_bottomComposite);

bottomComposite.setLayout(new FillLayout());

 

graphicalViewer = new ScrollingGraphicalViewer();

graphicalViewer.createControl(bottomComposite);

graphicalViewer.setRootEditPart(new ScalableRootEditPart());

graphicalViewer.setEditPartFactory(new PartFactory());

 

//

FigureCanvas canvas = (FigureCanvas) graphicalViewer.getControl();

canvas.setBackground(ColorConstants.cyan);

canvas.setScrollBarVisibility(FigureCanvas.ALWAYS);

//

EditDomain domain = new EditDomain();

//domain.setActiveTool(new SelectionTool());

graphicalViewer.setEditDomain(domain);

File f=new File("。。。/11/11.gef");

InputStream is=null;

try {

is = new FileInputStream(f);

} catch (FileNotFoundException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

ContainerModel container = (ContainerModel) Xml.readXML(is);

graphicalViewer.setContents(container);

 

总结一下步骤：

1:需要创建ScrollingGraphicalViewer   graphicalViewer = new ScrollingGraphicalViewer();

2:设置ScrollingGraphicalViewer的part工厂。 （ 核心。。。。）graphicalViewer.setEditPartFactory(new PartFactory());

3：设置EditDomain    graphicalViewer.setEditDomain(domain);

4：设置Contents      graphicalViewer.setContents(container);