在Primefaces 5.2，Glassfish 4.0中，我正在开发一个简单的CRUD。我有两个与行选择有关的不同问题。
用户点击数据表中的一行，此行突出显示，用户选择＆＃34;编辑＆＃34;在上下文菜单中的菜单中，将打开一个模态窗口。
1 /当用户按＆＃34;取消＆＃34;在模态窗口中的按钮，对话框正确关闭。但是，如果用户选择数据表中的另一行，则新模态窗口中显示的值对应于第一个先前选择。如何更新选定的值？
2 /当用户按下＆＃34; OK＆＃34;在模态窗口中的按钮，对话框正确关闭，数据表正确更新。但是数据表中更新的行不再突出显示，用户不知道哪一行刚刚更新。有没有办法保持突出显示最后更新的行（但重新初始化选定的值以进一步选择），直到下一次单击一行，并与其他焦点行并行？
searchCompany.xhtml代码是：
<h:form id="form">
<p:growl id="msgs" showDetail="true"/>
<p:contextMenu for="table">
<p:menuitem value="View" update="detail" icon="ui-icon-search" oncomplete="PF('companyDialog').show()"/>
<p:menuitem value="Delete" update="table" icon="ui-icon-close" actionListener="#{dtContextMenuView.deleteCompany}"/>
</p:contextMenu>
<p:dataTable
id="table"
value="#{companyBean.allCompanies}"
var="company"
editable="true"
editmode="row"
widgetVar="cellCompanies"
sortBy="#{company.name}"
scrollable="true"
scrollWidth="1024"
scrollHeight="300"
rowKey="#{company.id}"
selection="#{companyBean.selectedCompany}"
selectionMode="single">
<!-- above: by default table is sorted by Company name -->
<!-- above: to freeze the 2 first columns : frozenColumns="2"-->
<p:column
style="width:150px"
sortBy="#{company.name}"
filterBy="#{company.name}"
filterMatchMode="contains">
<!-- Column is sortable -->
<f:facet name="header">
#{msg['name']} <!-- Title of the column -->
</f:facet>
<p:cellEditor>
<f:facet name="output">
<h:outputText value="#{company.name}" />
</f:facet>
<f:facet name="input">
<h:inputText value="#{company.name}"/>
</f:facet>
</p:cellEditor>
</p:column>
(..)
</p:dataTable>
<p:dialog header="#{msg['detail']}" widgetVar="companyDialog" modal="true" showEffect="fade" resizable="false">
<p:panel id="detail" >
<p:panelGrid columns="2" rendered="#{not empty companyBean.selectedCompany}">
<h:outputText value="#{msg['name']}:" />
<p:inputText value="#{companyBean.selectedCompany.name}" />
<h:outputText value="#{msg['contact']}:" />
<p:inputText value="#{companyBean.selectedCompany.contact}" />
</p:panelGrid>
<p:commandButton action="#{companyBean.updateCompanyEnd}" value='#{msg.OK}' oncomplete="PF('companyDialog').hide();" update="table, :form:msgs"/>
<p:commandButton value='#{msg.cancel}' onclick="PF('companyDialog').hide();"/>
</p:panel>
</p:dialog>
</h:form>
</ui:define>
</ui:composition>
bean代码是：
package com.sdzee.bean;
@ManagedBean
@ViewScoped
public class CompanyBean implements Serializable {
private static final long serialVersionUID = 1L;
private static final String CREATE_COMPANY = "createCompany";
private static final String DELETE_COMPANY = "deleteCompany";
private static final String UPDATE_COMPANY = "updateCompany";
private static final String LIST_ALL_COMPANIES = "searchCompany";
private static final String STAY_IN_THE_SAME_PAGE = null;
@EJB
private CompanyFacade companyFacade;
private Company company;
private List<Company> AllCompanies;
@PostConstruct
public void init() {
AllCompanies = companyFacade.findAll();
}
private Company selectedCompany;
public Company getCompany() {
if(company == null){
company = new Company();
}
return company;
}
public void setCompany(Company company) {
this.company = company;
}
public List<Company> getAllCompanies() {
return AllCompanies;
}
public String updateCompanyEnd(){
try {
Company comp = selectedCompany;
companyFacade.update(comp);
} catch (EJBException e) {
FacesContext context = FacesContext.getCurrentInstance();
String texte = context.getApplication().evaluateExpressionGet(context, "#{msg['error']}", String.class);
sendErrorMessageToUser(texte+e);
return STAY_IN_THE_SAME_PAGE;
}
FacesContext context = FacesContext.getCurrentInstance();
String texte = context.getApplication().evaluateExpressionGet(context, "#{msg['update.successful']}", String.class);
FacesMessage message = new FacesMessage(texte, selectedCompany.getName());
FacesContext.getCurrentInstance().addMessage(null, message);
this.selectedCompany = company;
return LIST_ALL_COMPANIES;
}
public String deleteCompanyStart(){
return DELETE_COMPANY;
}
public String deleteCompanyEnd(){
try {
companyFacade.delete(company);
} catch (EJBException e) {
sendErrorMessageToUser("Error. Call the ADM");
return STAY_IN_THE_SAME_PAGE;
}
FacesContext context = FacesContext.getCurrentInstance();
String texte = context.getApplication().evaluateExpressionGet(context, "#{msg['delete.successful']}", String.class);
FacesMessage message = new FacesMessage(texte, company.getName());
FacesContext.getCurrentInstance().addMessage(null, message);
//sendInfoMessageToUser("Operation Complete: Delete");
return LIST_ALL_COMPANIES;
}
public String createCompanyStart(){
return CREATE_COMPANY;
}
public String createCompanyEnd(){
try {
companyFacade.save(company);
} catch (EJBException e) {
sendErrorMessageToUser("Error. Check if the weight is above 0 or call the adm");
return STAY_IN_THE_SAME_PAGE;
}
sendInfoMessageToUser("Operation Complete: Create");
return LIST_ALL_COMPANIES;
}
public String listAllCompanies(){
return LIST_ALL_COMPANIES;
}
private void sendInfoMessageToUser(String message){
FacesContext context = getContext();
context.addMessage(null, new FacesMessage(FacesMessage.SEVERITY_INFO, message, message));
}
private void sendErrorMessageToUser(String message){
FacesContext context = getContext();
context.addMessage(null, new FacesMessage(FacesMessage.SEVERITY_ERROR, message, message));
}
private FacesContext getContext() {
FacesContext context = FacesContext.getCurrentInstance();
return context;
}
public Company getSelectedCompany() {
return selectedCompany;
}
public void setSelectedCompany(Company selectedCompany) {
this.selectedCompany = selectedCompany;
}
}