यहां एक और उदाहरण।
एक्सएचटीएमएल
<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:p="http://primefaces.org/ui">
<h:head>
<f:facet name="first">
<meta http-equiv="Content-Type"
content="text/html; charset=UTF-8" />
<meta name="viewport"
content="user-scalable=no,
width=device-width,
initial-scale=1.0,
maximum-scale=1.0"/>
</f:facet>
<title>Tree provides three selection modes, "single", "multiple" and "checkbox".</title>
</h:head>
<h:body id="bodyView">
<h:form>
<p:growl id="msgs" showDetail="true" escape="false"/>
<h3 style="margin-top:0">Single</h3>
<p:tree value="#{treeSelectionView.root1}"
id="simpleSelection"
var="doc"
selectionMode="single"
selection="#{treeSelectionView.selectedNode}">
<p:treeNode expandedIcon="ui-icon-folder-open"
collapsedIcon="ui-icon-folder-collapsed">
<h:outputText value="#{doc.name}"/>
</p:treeNode>
<p:treeNode type="document" icon="ui-icon-document">
<h:outputText value="#{doc.name}" />
</p:treeNode>
<p:treeNode type="picture" icon="ui-icon-image">
<h:outputText value="#{doc.name}" />
</p:treeNode>
<p:treeNode type="mp3" icon="ui-icon-video">
<h:outputText value="#{doc.name}" />
</p:treeNode>
</p:tree>
<p:commandButton value="Display"
update="msgs"
icon="ui-icon-newwin"
actionListener="#{treeSelectionView.displaySelectedSingle}"/>
<p:commandButton value="Reset"
update="simpleSelection"
icon="ui-icon-newwin"
process="@this"
actionListener="#{treeSelectionView.resetSelectedNode}" />
<h3>Multiple with metakey</h3>
<p:tree id="multipleSelection"
value="#{treeSelectionView.root1}"
var="doc"
selectionMode="multiple"
selection="#{treeSelectionView.selectedNodes1}">
<p:treeNode expandedIcon="ui-icon-folder-open"
collapsedIcon="ui-icon-folder-collapsed">
<h:outputText value="#{doc.name}"/>
</p:treeNode>
<p:treeNode type="document" icon="ui-icon-document">
<h:outputText value="#{doc.name}" />
</p:treeNode>
<p:treeNode type="picture" icon="ui-icon-image">
<h:outputText value="#{doc.name}" />
</p:treeNode>
<p:treeNode type="mp3" icon="ui-icon-video">
<h:outputText value="#{doc.name}" />
</p:treeNode>
</p:tree>
<p:commandButton value="Display"
update="msgs"
icon="ui-icon-newwin"
actionListener="#{treeSelectionView.displaySelectedMultiple(treeSelectionView.selectedNodes1)}"/>
<p:commandButton value="Reset"
update="multipleSelection"
icon="ui-icon-newwin"
process="@this"
actionListener="#{treeSelectionView.resetSelectedNode}" />
<h3>Multiple with Checkbox</h3>
<p:tree id="checkboxSelection"
value="#{treeSelectionView.root1}"
var="doc"
selectionMode="checkbox"
selection="#{treeSelectionView.selectedNodes2}">
<p:treeNode icon="ui-icon-note">
<h:outputText value="#{doc.name}"/>
</p:treeNode>
<p:treeNode type="document" icon="ui-icon-document">
<h:outputText value="#{doc.name}" />
</p:treeNode>
<p:treeNode type="picture" icon="ui-icon-image">
<h:outputText value="#{doc.name}" />
</p:treeNode>
<p:treeNode type="mp3" icon="ui-icon-video">
<h:outputText value="#{doc.name}" />
</p:treeNode>
</p:tree>
<p:commandButton value="Display"
update="msgs"
icon="ui-icon-newwin"
actionListener="#{treeSelectionView.displaySelectedMultiple(treeSelectionView.selectedNodes2)}"/>
<p:commandButton value="Reset"
update="checkboxSelection"
icon="ui-icon-newwin"
process="@this"
actionListener="#{treeSelectionView.resetSelectedNode}" />
</h:form>
</h:body>
</html>
managedbean treeSelectionView
import java.io.Serializable;
import javax.annotation.PostConstruct;
import javax.faces.application.Application;
import javax.faces.application.FacesMessage;
import javax.faces.application.ViewHandler;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.ManagedProperty;
import javax.faces.bean.ViewScoped;
import javax.faces.component.UIViewRoot;
import javax.faces.context.FacesContext;
import javax.faces.event.ActionEvent;
import org.primefaces.model.TreeNode;
import org.primefaces.showcase.service.DocumentService;
@ManagedBean(name = "treeSelectionView")
@ViewScoped
public class SelectionView implements Serializable {
private TreeNode root1;
private TreeNode root2;
private TreeNode root3;
private TreeNode selectedNode;
private TreeNode[] selectedNodes1;
private TreeNode[] selectedNodes2;
@ManagedProperty("#{documentService}")
private DocumentService service;
@PostConstruct
public void init() {
root1 = service.createDocuments();
root2 = service.createDocuments();
root3 = service.createDocuments();
}
public TreeNode getRoot1() {
return root1;
}
public TreeNode getRoot2() {
return root2;
}
public TreeNode getRoot3() {
return root3;
}
public TreeNode getSelectedNode() {
return selectedNode;
}
public void setSelectedNode(TreeNode selectedNode) {
this.selectedNode = selectedNode;
}
public TreeNode[] getSelectedNodes1() {
return selectedNodes1;
}
public void setSelectedNodes1(TreeNode[] selectedNodes1) {
this.selectedNodes1 = selectedNodes1;
}
public TreeNode[] getSelectedNodes2() {
return selectedNodes2;
}
public void setSelectedNodes2(TreeNode[] selectedNodes2) {
this.selectedNodes2 = selectedNodes2;
}
public void setService(DocumentService service) {
this.service = service;
}
public void displaySelectedSingle() {
if (selectedNode != null) {
FacesMessage message = new FacesMessage(FacesMessage.SEVERITY_INFO, "Selected", selectedNode.getData().toString());
FacesContext.getCurrentInstance().addMessage(null, message);
}
}
public void displaySelectedMultiple(TreeNode[] nodes) {
if (nodes != null && nodes.length > 0) {
StringBuilder builder = new StringBuilder();
for (TreeNode node : nodes) {
builder.append(node.getData().toString());
builder.append("<br />");
}
FacesMessage message = new FacesMessage(FacesMessage.SEVERITY_INFO, "Selected", builder.toString());
FacesContext.getCurrentInstance().addMessage(null, message);
}
}
public void resetSelectedNode(ActionEvent event) {
FacesContext context = FacesContext.getCurrentInstance();
Application application = context.getApplication();
ViewHandler viewHandler = application.getViewHandler();
UIViewRoot viewRoot = viewHandler.createView(context, context.getViewRoot().getViewId());
context.setViewRoot(viewRoot);
context.renderResponse(); //Optional
}
}
managedbean documentService
import javax.faces.bean.ApplicationScoped;
import javax.faces.bean.ManagedBean;
import org.primefaces.model.DefaultTreeNode;
import org.primefaces.model.TreeNode;
import org.primefaces.showcase.domain.Document;
@ManagedBean(name = "documentService")
@ApplicationScoped
public class DocumentService {
public TreeNode createDocuments() {
TreeNode root = new DefaultTreeNode(new Document("Files", "-", "Folder"), null);
TreeNode documents = new DefaultTreeNode(new Document("Documents", "-", "Folder"), root);
TreeNode pictures = new DefaultTreeNode(new Document("Pictures", "-", "Folder"), root);
TreeNode movies = new DefaultTreeNode(new Document("Movies", "-", "Folder"), root);
TreeNode work = new DefaultTreeNode(new Document("Work", "-", "Folder"), documents);
TreeNode primefaces = new DefaultTreeNode(new Document("PrimeFaces", "-", "Folder"), documents);
//Documents
TreeNode expenses = new DefaultTreeNode("document", new Document("Expenses.doc", "30 KB", "Word Document"), work);
TreeNode resume = new DefaultTreeNode("document", new Document("Resume.doc", "10 KB", "Word Document"), work);
TreeNode refdoc = new DefaultTreeNode("document", new Document("RefDoc.pages", "40 KB", "Pages Document"), primefaces);
//Pictures
TreeNode barca = new DefaultTreeNode("picture", new Document("barcelona.jpg", "30 KB", "JPEG Image"), pictures);
TreeNode primelogo = new DefaultTreeNode("picture", new Document("logo.jpg", "45 KB", "JPEG Image"), pictures);
TreeNode optimus = new DefaultTreeNode("picture", new Document("optimusprime.png", "96 KB", "PNG Image"), pictures);
//Movies
TreeNode pacino = new DefaultTreeNode(new Document("Al Pacino", "-", "Folder"), movies);
TreeNode deniro = new DefaultTreeNode(new Document("Robert De Niro", "-", "Folder"), movies);
TreeNode scarface = new DefaultTreeNode("mp3", new Document("Scarface", "15 GB", "Movie File"), pacino);
TreeNode carlitosWay = new DefaultTreeNode("mp3", new Document("Carlitos' Way", "24 GB", "Movie File"), pacino);
TreeNode goodfellas = new DefaultTreeNode("mp3", new Document("Goodfellas", "23 GB", "Movie File"), deniro);
TreeNode untouchables = new DefaultTreeNode("mp3", new Document("Untouchables", "17 GB", "Movie File"), deniro);
return root;
}
}
डोमेन
import java.io.Serializable;
public class Document implements Serializable, Comparable<Document> {
private String name;
private String size;
private String type;
public Document(String name, String size, String type) {
this.name = name;
this.size = size;
this.type = type;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getSize() {
return size;
}
public void setSize(String size) {
this.size = size;
}
public String getType() {
return type;
}
public void setType(String type) {
this.type = type;
}
//Eclipse Generated hashCode and equals
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((name == null) ? 0 : name.hashCode());
result = prime * result + ((size == null) ? 0 : size.hashCode());
result = prime * result + ((type == null) ? 0 : type.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj == null) {
return false;
}
if (getClass() != obj.getClass()) {
return false;
}
Document other = (Document) obj;
if (name == null) {
if (other.name != null) {
return false;
}
} else if (!name.equals(other.name)) {
return false;
}
if (size == null) {
if (other.size != null) {
return false;
}
} else if (!size.equals(other.size)) {
return false;
}
if (type == null) {
if (other.type != null) {
return false;
}
} else if (!type.equals(other.type)) {
return false;
}
return true;
}
@Override
public String toString() {
return name;
}
public int compareTo(Document document) {
return this.getName().compareTo(document.getName());
}
}
मैं आपके फ़ंक्शन रीसेट की कोशिश करता हूं एक चयन बीन में चयन एकाधिक चयन के साथ और कुछ भी होता है: \। इस विशिष्ट मामले के लिए एक उदाहरण दे सकता है? – tech4
@ टेक 4 मैं पहले से ही एक और उदाहरण पोस्ट करता हूं। – wittakarn