我的ecp应用程序中有一个view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,该动作提供程序将有助于上下文菜单:

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是具有defaultHandler的已定义命令,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到处理程序?如您所见,我正在尝试这样做:

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


但它不起作用。

最佳答案

您需要将Tree/Table Viewer设置为SelectionProviderPartSite


IWorkbenchSite.java

 public void setSelectionProvider(ISelectionProvider provider);



您的命令处理程序代码,具有以下方法


公共对象execute(ExecutionEvent事件)引发ExecutionException

使用ISelection selection = HandlerUtil.getCurrentSelectionChecked(event);

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

如果不通过工作台提供SourceProvider,则还有另一种方法。您可以实现自己的

org.eclipse.ui.ISourceProvider


您有责任更新提供商地图。这是示例参考

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

08-05 08:28
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