介紹
ADF中的多選組件多種多樣,有<af:SelectManyCheckbox>,<af:SelectManyChoice>, <af:SelectManyListbox>,<af:selectManyShuttle>等,各組件使用起來都大同小異,都以數組來存儲選中的值。
selectManyShuttle組件提供了用戶的良好體驗,本文簡單介紹selectManyShuttle使用,其它多選組件可以自行舉一反三。
selectManyShuttle組件效果預覽如下圖:
步驟
編寫和配置Manage Bean(說明參見注釋)
package adf.selectmanyshuttle.view.bean;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import javax.faces.event.ValueChangeEvent;
import oracle.adf.view.rich.context.AdfFacesContext;
public class SelectManyShuttleBean {
//保存選中值的數組
private String[] selectedValues;
//顯示選中結果
private String showMessage = "";
//用於提供SelectManyShuttle中的列表值
private List<String> values;
public SelectManyShuttleBean() {
super();
//初始化選框列表
if(values == null) {
values = new ArrayList<String>();
}
values.add("AAAAAAA");
values.add("BBBBBBB");
values.add("CCCCCCC");
values.add("DDDDDDD");
values.add("EEEEEEE");
//初始化選擇的值
selectedValues = new String[] {"AAAAAAA", "BBBBBBB"};
}
public String showSelectedValues() {
// Add event code here...
if(selectedValues != null) {
for(int i=0; i<selectedValues.length; i++) {
showMessage = showMessage + selectedValues[i] + ";";
}
}
return null;
}
public void setSelectedValues(String[] selectedValues) {
String[] tempValues = selectedValues;
if(selectedValues != null) {
List<String> newValues = new ArrayList<String>(Arrays.asList(selectedValues));
List<String> oldValues = new ArrayList<String>(Arrays.asList(this.selectedValues));
//特殊處理,選中DDDDDDD的同時,選中自動選中EEEEEEE
if(newValues.contains("DDDDDDD") && !oldValues.contains("DDDDDDD")) {
if(!newValues.contains("EEEEEEE") ) {
newValues.add("EEEEEEE");
tempValues = newValues.toArray(new String[] {});
}
}
}
this.selectedValues = tempValues;
}
public String[] getSelectedValues() {
return selectedValues;
}
public void setValues(List<String> values) {
this.values = values;
}
public List<String> getValues() {
return values;
}
public void setShowMessage(String showMessage) {
this.showMessage = showMessage;
}
public String getShowMessage() {
return showMessage;
}
}
<?xml version="1.0" encoding="UTF-8" ?>
<adfc-config xmlns="http://xmlns.oracle.com/adf/controller" version="1.2">
<managed-bean id="__2">
<managed-bean-name id="__4">SelectManyShuttleBean</managed-bean-name>
<managed-bean-class id="__3">adf.selectmanyshuttle.view.bean.SelectManyShuttleBean</managed-bean-class>
<managed-bean-scope id="__1">request</managed-bean-scope>
</managed-bean>
</adfc-config>
構建頁面
<?xml version='1.0' encoding='UTF-8'?>
<jsp:root xmlns:jsp="http://java.sun.com/JSP/Page" version="2.1"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:af="http://xmlns.oracle.com/adf/faces/rich">
<jsp:directive.page contentType="text/html;charset=UTF-8"/>
<f:view>
<af:document id="d1">
<af:form id="f1">
<af:panelGroupLayout id="pgl1" layout="vertical"
inlineStyle="margin:5.0%;">
<!--value屬性初始化選中結果和保存選中結果-->
<af:selectManyShuttle
value="#{SelectManyShuttleBean.selectedValues}"
id="sms1" autoSubmit="true"
partialTriggers="sms1">
<!--通過for each循環List初始化列表值-->
<af:forEach items="#{SelectManyShuttleBean.values}" var="item">
<af:selectItem id="si1" value="#{item}" label="#{item}"/>
</af:forEach>
</af:selectManyShuttle>
<af:spacer width="10" height="10" id="s1"/>
<af:outputText id="ot1" value="#{SelectManyShuttleBean.showMessage}"/>
<af:commandButton text="Show Selected Values" id="cb1"
action="#{SelectManyShuttleBean.showSelectedValues}"/>
</af:panelGroupLayout>
</af:form>
</af:document>
</f:view>
</jsp:root>