selectOneMenu(Primefaces)中不同颜色的选项

Question

selectOneMenu(Primefaces)中不同颜色的选项

Joh*_*012 9 jsf selectonemenu primefaces jsf-2

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>

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 private List<Cars> allCars;

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如果汽车出售,我需要显示选项RED的背景,否则黑色.在我的模型中,我得到了一个属性,如果汽车出售与否,它会给我一个值(布尔售出).

如何在selectOneMenu中设置颜色？

Answer 1

Xtr*_*ica 10

解决方案是在PrimeFaces 4.0及更高版本中使用"高级"方式显示它.

您可以将f:selectItems标记与p:column标记组合p:selectOneMenu(请参阅展示),并var为列本身进行迭代,就像在表格中一样.

那么理想的是styleClass根据条件设置整个列,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

<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>

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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);
    }

}

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您可能还有兴趣只设置字体颜色而不是背景:

<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>

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