在原理布局中的布局单元之间拖放图像不起作用？ [英] Drag and drop of images between layout units in primefaces layout is not working?
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问题描述
我们要实现从左侧布局单元拖放到布局布局中的中心布局单元。
我们试图添加所有布局单位的Z索引，如在某些堆栈中建议的流程问题，但是添加Z索引也不能在下拉事件触发，甚至所有布局单元都禁用滚动，以帮助图像在中心布局事件侦听器触发时被拖放
we want to implement drag and drop of images from left layout unit on to centre layout unit in Primefaces layout. we tried to add Z index for all layout units as suggested in some stack over flow questions but adding Z index also so couldn't fire on drop event and even scrollable is disabled for all layout units please help so that images can be dragged and dropped on centre layout event listener fires
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:p="http://primefaces.org/ui"
xmlns:pe="http://primefaces.org/ui/extensions">
<f:view contentType="text/html">
<h:head>
<style type="text/css">
.slot {
background: #FF9900;
width: 640px;
height: 200px;
display: block;
}
</style>
<style type="text/css">
.ui-layout-north {
z-index: 20 !important;
overflow: visible !important;;
}
.ui-layout-north .ui-layout-unit-content {
overflow: visible !important;
}
</style>
</h:head>
<h:body>
<p:layout fullPage="true">
<p:layoutUnit id="top" position="north" size="50">
<p:menubar>
<p:submenu label="New Fundament" icon="ui-icon-document">
<p:submenu label="Basic Layout" icon="ui-icon-contact">
<p:menuitem value="Choose Rows" url="#" />
</p:submenu>
</p:submenu>
<p:submenu label="Edit Existing Fundament" icon="ui-icon-pencil">
</p:submenu>
<p:submenu label="Save" icon="ui-icon-disk">
</p:submenu>
</p:menubar>
</p:layoutUnit>
<p:layoutUnit id="left" position="west" size="300" resizable="true"
collapsible="true" header="Items" minSize="200">
<h:graphicImage id="campnou" value="images/correct_scrum_board.png">
</h:graphicImage>
<p:draggable for="campnou" helper="clone" />
</p:layoutUnit>
<p:layoutUnit id="right" position="east" size="250"
header="Tree Structure" resizable="true" closable="true"
collapsible="true" style="text-align:center">
<p:lightBox style="text-align:center;margin-top:20px;">
</p:lightBox>
</p:layoutUnit>
<p:layoutUnit id="center" position="center">
<p:outputPanel id="slot" styleClass="slot" />
<p:droppable for="slot">
<p:ajax listener="#{scrumBoardBean.onDrop}" />
</p:droppable>
</p:layoutUnit>
</p:layout>
</h:body>
</f:view>
</html>
Bean方法
Bean Method
public void onDrop(DragDropEvent ddEvent)
{
//Logic
}
推荐答案
将溢出更改为可见样式
<h:head>
<style type="text/css">
.ui-widget {
font-size: 75%;
}
.ui-layout-west {
z-index: 20 !important;
overflow: visible;
}
.ui-layout-west .ui-layout-unit-content {
overflow: visible;
}
</style>
</h:head>
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