给editor加右键菜单

我这里介绍两种方法
1：
在initializeGraphicalViewer方法中添加如下代码：
MenuManager menuManager = new MenuManager();
menuManager.add(new Action("创建") {
@Override
public void run() {

CreateNetunitDialog create = new CreateNetunitDialog();

create.open();

}
});
menuManager.add(new Action("修改") {


@Override
public void run() {

// System.out.println(tree.getSelection()[0].getText());
//
// if("".equals(tree.getSelection()[0].getText())){
//
// MessageDialog.openInformation(null, "提示", "请选择网元IP地址进行修改");
// return;
//
// }



}
});
menuManager.add(new Action("删除") {
@Override
public void run() {
handle.toWrite("正在删除网元...");
MessageDialog dialog = new MessageDialog(null, "提示", null, "确定删除吗?",
MessageDialog.QUESTION, new String[] {
IDialogConstants.YES_LABEL,
IDialogConstants.CANCEL_LABEL }, 0);

int result = dialog.open();

switch(result){

case 0:   //yes

HandleXML hand = new HandleXML();

Object o = ((IStructuredSelection) viewer.getSelection()).getFirstElement();
NetNodeEntity node = (NetNodeEntity) o;

int i = hand.toDelete(node.getIP());

if(0 == i){

SendMessage send = new SendMessage();

send.write("删除网元"+node.getIP() +"成功");
Display.getDefault().syncExec(new Runnable()
{
public void run()
{
DeviceTreeViewer viewPart = (DeviceTreeViewer) PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage().findView(DeviceTreeViewer.ID);;

TreeViewer viewer = viewPart.getTreeViewer();

viewer.setInput(NodeFactory.createInputData());
}
});
handle.toWrite("删除网元成功");
view.getTableViewer().setInput(LogDateFactory.createTableData());
MessageDialog.openInformation(null, "提示", "删除成功!");

}
//
// case 1: //no

// break;

case 1:   //cancel
handle.toWrite("取消删除网元");
view.getTableViewer().setInput(LogDateFactory.createTableData());
break;

default: break;

}

}
});
Menu menu = menuManager.createContextMenu(viewer.getControl());
viewer.getControl().setMenu(menu);

2：
新建CbmEditorContextMenuProvider 类继承ContextMenuProvider 内容如下：
public class CbmEditorContextMenuProvider extends ContextMenuProvider {

private ActionRegistry actionRegistry;
private ActionRegistry getActionRegistry() {
return actionRegistry;
}
public void setActionRegistry(ActionRegistry registry) {
actionRegistry = registry;
}

    public CbmEditorContextMenuProvider(EditPartViewer viewer, ActionRegistry registry) {
        super(viewer);
        actionRegistry = registry;
    }
    public void buildContextMenu(IMenuManager menu) {
        // Add standard action groups to the menu
        GEFActionConstants.addStandardActionGroups(menu);
        // Add actions to the menu
        menu.appendToGroup(GEFActionConstants.GROUP_UNDO,getActionRegistry().getAction(GEFActionConstants.REDO));
        menu.appendToGroup(GEFActionConstants.GROUP_UNDO,getActionRegistry().getAction(GEFActionConstants.REDO));
        menu.appendToGroup(GEFActionConstants.GROUP_UNDO,getActionRegistry().getAction(GEFActionConstants.REDO));
        menu.appendToGroup(GEFActionConstants.GROUP_UNDO,getActionRegistry().getAction(GEFActionConstants.REDO));
        menu.appendToGroup(GEFActionConstants.GROUP_UNDO,getActionRegistry().getAction(GEFActionConstants.REDO));
        menu.appendToGroup(GEFActionConstants.GROUP_UNDO,getActionRegistry().getAction(GEFActionConstants.REDO));
    }

}
然后在configureGraphicalViewer方法中添加如下代码:
//添加上下文菜单
        ContextMenuProvider provider =
    new CbmEditorContextMenuProvider(getGraphicalViewer(), getActionRegistry());
    getGraphicalViewer().setContextMenu(provider);
    getSite().registerContextMenu(
    "gef.examples.shapes.editor.contextmenu", //$NON-NLS-1$
    provider,
    getGraphicalViewer());