解决方案是在 PrimeFaces 4.0 和更新版本中使用“高级”方式来显示它。
您可以将f:selectItems
标签与p:column
标签组合在一起p:selectOneMenu
(请参阅展示),以及列本身的迭代var
,就像您在表格中所做的那样。
那么理想的做法是styleClass
根据条件将 设置为整个列,但不幸的是它不起作用。幸运的是,添加一些 Javascript/jQuery 代码可以实现您的目标,请查看此SSCCE:
XHTML 页面
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:p="http://primefaces.org/ui" style="height: 400px;">
<h:head>
<style type="text/css">
red-background {
//Empty, used just as a reference to set the style with jQuery
}
</style>
</h:head>
<h:body>
<h:form>
<p:commandButton action="#{bean.send}" value="Send" ajax="false" />
<p:selectOneMenu id="carMenu" style="margin-top:4px;"
value="#{bean.selectedCar}" effect="fade" autoupdate="true" var="car"
converter="omnifaces.SelectItemsConverter" onchange="setSelectionColor();">
<f:selectItems id="carsId" value="#{bean.allCars}" var="carItem"
itemLabel="#{carItem.name}" itemValue="#{carItem}" />
<p:column>
<h:outputText value="#{car.name}"
styleClass="#{car.sold ? 'red-background' : ''}" />
</p:column>
</p:selectOneMenu>
</h:form>
<script>
$(document).ready(function() {
//Set red background for the options (not for td, but for its parent tr)
$(".red-background").parent().css( "background-color", "red" );
setSelectionColor();
});
function setSelectionColor(){
//Check if the selected value has a red background
//(active and red-background styles altogether),
//if true, set the selectonemenu label to red too
if($(".ui-state-active .red-background").size() > 0){
$(".ui-selectonemenu-label").css( "background-color", "red" );
}else{
$(".ui-selectonemenu-label").css( "background-color", "white" );
}
}
</script>
</h:body>
</html>
Bean.java
@ManagedBean
@ViewScoped
public class Bean implements Serializable {
public class Car implements Serializable {
String name;
boolean sold;
public Car(String name, boolean sold) {
this.name = name;
this.sold = sold;
}
public String getName() {
return name;
}
public boolean isSold() {
return sold;
}
}
private List<Car> allCars = Arrays.asList(new Car("Audi", true), new Car(
"Mercedes", false));
public List<Car> getAllCars() {
return allCars;
}
private Car selectedCar;
public Car getSelectedCar() {
return selectedCar;
}
public void setSelectedCar(Car selectedCar) {
this.selectedCar = selectedCar;
}
public void send() {
System.out.println("Sent " + selectedCar.name);
}
}
您可能还对仅设置字体颜色而不是背景感兴趣:
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:p="http://primefaces.org/ui">
<h:head>
<style type="text/css">
.red-font {
color: red;
}
</style>
</h:head>
<h:body>
<h:form>
<p:commandButton action="#{bean.send}" value="Send" ajax="false" />
<p:selectOneMenu id="carMenu" style="margin-top:4px;"
value="#{bean.selectedCar}" effect="fade" autoupdate="true"
var="car"
converter="omnifaces.SelectItemsConverter">
<f:selectItems id="carsId" value="#{bean.allCars}" var="carItems"
itemLabel="#{carItems.name}" itemValue="#{carItems}" />
<p:column>
<h:outputText styleClass="#{car.sold ? 'red-font' : ''}"
value="#{car.name}" />
</p:column>
</p:selectOneMenu>
</h:form>
</h:body>
</html>