如何添加子菜单的菜单按钮在PrimeFaces?

Question

代码如下:

<p:menuButton styleClass="menuItems" value="File">
<p:menuitem styleClass="menuItems" value="View" url=""/>
<p:menuitem styleClass="menuItems" value="Edit" url=""/>
</p:menubutton> 

当我将<p:submenu>添加到<p:menuButton>时，UI没有正确渲染。想要在<p:menuButton>里面添加<p:submenu>

Answer 1

p:menuButton不支持。您可能想尝试将p:tieredMenu与overlay="true"属性结合使用:

<p:commandButton id="dynaButton" value="Show" type="button" icon="pi pi-external-link"/>
<p:tieredMenu overlay="true" trigger="dynaButton" my="left top" at="left bottom" style="width:200px">
<p:submenu label="File" icon="pi pi-fw pi-file">
<p:submenu label="New" icon="pi pi-fw pi-plus">
<p:menuitem value="Bookmark" icon="pi pi-fw pi-bookmark"/>
<p:menuitem value="Video" icon="pi pi-fw pi-video"/>
</p:submenu>
<p:menuitem value="Delete" icon="pi pi-fw pi-trash"/>
<p:divider />
<p:menuitem value="Export" icon="pi pi-fw pi-external-link"/>
</p:submenu>
...
<p:menuitem value="Quit" icon="pi pi-fw pi-power-off"/>
</p:tieredMenu>

参见:

• https://www.primefaces.org/showcase/ui/menu/tieredMenu.xhtml