Question

我在Websphere上使用JSF + Primefaces试图创建一个像胶粘物的应用程序。

当使用onDrop监听器时，我很难从重复控件获取属性（在这种情况下为位置的样式）。这是我的代码：

board.xhtml

<h:form id="mainForm">
    <p:dataList id="restPanel" styleClass="restrictPanel" var="note"
        value="#{publicBoard.getNotes()}" columns="1" type="none">
        <p:panel id="note" header="#{note.title}" styleClass="smallNote"
            style="#{publicBoard.getNoteStyle(note)}">
            <h:outputText value="#{note.description}" />
        </p:panel>

        <p:draggable for="note" containment="parent" opacity="0.3" />
    </p:dataList>

    <p:droppable for="mainForm" datasource="restPanel">
        <p:ajax process="@form" listener="#{publicBoard.onDrop}" />
    </p:droppable>
</h:form>

publicBoard bean

public void onDrop(DragDropEvent ddEvent) {
    Note obj = (Note) ddEvent.getData();

    System.out.println("NOTE ID:" + obj.getId());
    System.out.println(ddEvent.getDragId());
    UIViewRoot viewRoot = FacesContext.getCurrentInstance().getViewRoot();
    UIComponent component = viewRoot.findComponent(ddEvent.getDragId());
    if(component!=null){
    System.out.println(component.getId());
    }else{
        System.out.println("NULL COMPONENT");
    }
}

结果

[22.07.15 14:27:16:094 CEST] 000000c8 SystemOut     O NOTE ID:4
[22.07.15 14:27:16:094 CEST] 000000c8 SystemOut     O mainForm:restPanel:3:note
[22.07.15 14:27:16:094 CEST] 000000c8 SystemOut     O NULL COMPONENT

任何帮助将不胜感激！

从JSF托管bean获取重复控制的属性

0 个答案: