9

我需要在 Primefaces 中显示不同颜色的选项。

我有一个带有动态项目的 selectOneMenu(列表)

<p:selectOneMenu id="carMenu" style="margin-top:4px;"
    value="#{Bean.selectedCar}" effect="fade"
    autoupdate="true">
    <f:selectItems id="carsId"
        value="#{myBean.allCars}" var="carItems"
        itemLabel="#{carItems.name}" itemValue="#{carItems}" />
</p:selectOneMenu>
 private List<Cars> allCars;

如果汽车已售出,我需要显示选项 RED 的背景,否则为 BLACK。在我的模型中,我得到了一个属性,如果汽车售出与否,它会给我返回值(布尔值已售出)。

如何在我的 selectOneMenu 中设置颜色?

4

1 回答 1

10

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>
于 2013-10-16T14:19:02.857 回答