JSF2 de Pagination / Pager pour Répéteur

Voici un exemple simple qui devrait vous donner l'idée sur comment le mettre en œuvre.

RepeatPaginator:

public class RepeatPaginator {
private static final int DEFAULT_RECORDS_NUMBER = 2;
private static final int DEFAULT_PAGE_INDEX = 1;
private int records;
private int recordsTotal;
private int pageIndex;
private int pages;
private List<?> origModel;
private List<?> model;
public RepeatPaginator(List<?> model) {
this.origModel = model;
this.records = DEFAULT_RECORDS_NUMBER;
this.pageIndex = DEFAULT_PAGE_INDEX;        
this.recordsTotal = model.size();
if (records > 0) {
pages = records <= 0 ? 1 : recordsTotal / records;
if (recordsTotal % records > 0) {
pages++;
}
if (pages == 0) {
pages = 1;
}
} else {
records = 1;
pages = 1;
}
updateModel();
}
public void updateModel() {
int fromIndex = getFirst();
int toIndex = getFirst() + records;
if(toIndex > this.recordsTotal) {
toIndex = this.recordsTotal;
}
this.model = origModel.subList(fromIndex, toIndex);
}
public void next() {
if(this.pageIndex < pages) {
this.pageIndex++;
}
updateModel();
}
public void prev() {
if(this.pageIndex > 1) {
this.pageIndex--;
}
updateModel();
}   
public int getRecords() {
return records;
}
public int getRecordsTotal() {
return recordsTotal;
}
public int getPageIndex() {
return pageIndex;
}
public int getPages() {
return pages;
}
public int getFirst() {
return (pageIndex * records) - records;
}
public List<?> getModel() {
return model;
}
public void setPageIndex(int pageIndex) {
this.pageIndex = pageIndex;
}
}

Bean:

public class TestBean {
private List<String> list;
private RepeatPaginator paginator;
@PostConstruct
public void init() {
this.list = new ArrayList<String>();
this.list.add("Item 1");
this.list.add("Item 2");
this.list.add("Item 3");
this.list.add("Item 4");
this.list.add("Item 5");
this.list.add("Item 6");
this.list.add("Item 7");
this.list.add("Item 8");
this.list.add("Item 9");
this.list.add("Item 10");
this.list.add("Item 11");
paginator = new RepeatPaginator(this.list);
}
public RepeatPaginator getPaginator() {
return paginator;
}
}

XHTML:

<ui:composition xmlns="http://www.w3.org/1999/xhtml"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
template="/WEB-INF/template/default.xhtml">
<ui:define name="content">
<h:form>
<ui:repeat value="#{testBean.paginator.model}" var="listItem">
<div>
<h:outputText value="#{listItem}"/>
</div>
</ui:repeat>
<h:commandButton value="&lt; prev" action="#{testBean.paginator.prev}"/>
<h:outputText value="#{testBean.paginator.pageIndex} /#{testBean.paginator.pages}"/>
<h:commandButton value="next &gt;" action="#{testBean.paginator.next}"/>
<h:inputHidden value="#{testBean.paginator.pageIndex}"/>
</h:form>
</ui:define>
</ui:composition>

OriginalL'auteur