Question

我正在使用带有contextMenu的树，这里是代码：

      <p:contextMenu id="campaignPlaneTreeContextMenu" for="campaignPlanetree" >
          <p:menuitem value="New Camapign" disabled="#{projectCampaignManagementMB.campaignOptionsFlag}" />
          <p:menuitem value="Assign" disabled="#{projectCampaignManagementMB.FSTOptions}" />
          <p:menuitem value="Copy campaign" disabled="#{projectCampaignManagementMB.FSTOptions}"/>
          <p:menuitem value="Paste Campaign" disabled="#{projectCampaignManagementMB.pasteOptionCampaignFlag}"/>
          <p:menuitem value="Delete" disabled="#{projectCampaignManagementMB.FSTOptions}" />
          <p:menuitem value="Import Tests" disabled="#{projectCampaignManagementMB.campaignOptionsFlag}" />
      </p:contextMenu>
      <p:tree id="campaignPlanetree"
                    value="#{projectCampaignManagementMB.root}" var="node"
                    selectionMode="single"
                    selection="#{projectCampaignManagementMB.selectedNode}"
                     dynamic="true">

          <p:ajax event="select" listener="#{projectCampaignManagementMB.onCampaignPlaneNodeSelect}" update=":campaignForm:addCampaignBtn :campaignForm:renameCampaignBtn :campaignForm:importCampaignBtn :campaignForm:deleteCampaignBtn :campaignForm:importCampaignDlg :campaignForm:campaignPlaneTreeContextMenu" /> 

          <p:treeNode  value="#{node}">
              <h:outputText value="#{node}" />
          </p:treeNode>
           .....

ManagedBean：

if(selectedNode.getData() instanceof Campaign){// when a user select a tree node the contextmenu item are disabled and enabled

          setCampaignOptionsFlag(false);
        ....   
  }

没有禁用属性，每件事都很好，但添加后，上下文菜单会立即消失。

Answer 1

我发现当你将光标放在每个节点的箭头上时，我的意思是在所选树节点的左边，上下文菜单不会立即消失。

但是在最后一个树级别（叶子）你不会看到箭头，因为节点不可扩展所以它肯定是一个主要的错误

树contextMenu立即消失

1 个答案: