eclipse rcp:如何将选择传递给处理程序

时间:2013-04-12 16:35:35

标签: java eclipse-plugin swt eclipse-rcp jface

我的ecp应用程序中有一个视图部分,它只包含一个TreeViewer

每个树节点都有一个动作提供程序,当右键单击该节点时,该动作提供程序将对上下文菜单有所贡献:

MenuManager menuManager = new MenuManager();
        menuManager.addMenuListener(new IMenuListener(){

            @Override
            public void menuAboutToShow(IMenuManager manager) {
                IStructuredSelection is = (IStructuredSelection)treeViewer.getSelection();
                if(is.isEmpty()){
                    return;
                }else{
                    Node node = (Node)is.getFirstElement();
                    IActionProvider provider  = node.getActionProvider();
                    IContributionItem[] actions = provider.getActions();
                    if(actions.length == 0){
                        return;
                    }else{
                        for(IContributionItem action : actions){
                            manager.add(action);
                        }
                    }
                }
            }

        });
        Menu menu = menuManager.createContextMenu(treeViewer.getTree());
        menuManager.setRemoveAllWhenShown(true);
        treeViewer.getTree().setMenu(menu);
        getSite().registerContextMenu(menuManager, treeViewer);
        getSite().setSelectionProvider(treeViewer);

动作提供者示例:

public class CPSActionProvider implements IActionProvider {
    private Object source;

    @Override
    public void setInitializationData(IConfigurationElement config,
            String propertyName, Object data) throws CoreException {
        // TODO Auto-generated method stub

    }

    @Override
    public IContributionItem[] getActions() {
        CommandContributionItemParameter cp = new CommandContributionItemParameter(
                PlatformUI.getWorkbench().getActiveWorkbenchWindow(),
                null, "cn.ggfan.dmp.commands.addCP",
                CommandContributionItem.STYLE_CHECK);
        HashMap<String, Object> paras = new HashMap<String, Object>();
        paras.put("source", this.source);
        cp.parameters = paras;
        CommandContributionItem add = new CommandContributionItem(cp);
        //add.setId("cn.ggfan.dmp.commands.addCP");
        return new IContributionItem[] { add };
    }

    @Override
    public void setSource(Object o) {
        // TODO Auto-generated method stub
        this.source = o;
    }

}

cn.ggfan.dmp.commands.addCP是一个已定义的命令,其中defaultHandler,源字段是右键单击的节点,现在我的问题是如何将源字段传递给处理程序?正如你所看到的,我试图这样做:

HashMap<String, Object> paras = new HashMap<String, Object>();
        paras.put("source", this.source);
        cp.parameters = paras;

但它不起作用。

1 个答案:

答案 0 :(得分:2)

  1. 您需要将Tree/Table Viewer设为SelectionProviderPartSite
  2. IWorkbenchSite.java

     public void setSelectionProvider(ISelectionProvider provider);
    
    1. 您的命令处理程序代码,您有以下方法
    2. public Object execute(ExecutionEvent event)抛出ExecutionException

      使用ISelection selection = HandlerUtil.getCurrentSelectionChecked(event);

      /////////////////////////////////////////////// /////////////////////////////////////

      如果没有工作台提供SourceProvider,还有另一种方法。您可以实现自己的

      org.eclipse.ui.ISourceProvider
      

      您有责任更新提供商地图。这是样本参考

      http://www.vogella.com/articles/EclipseCommandsAdvanced/article.html