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Description & Source Code
MVVM is an abbreviation of a design pattern named Model-View-ViewModel which is originated from Microsoft. For more details, please refer to ZK Developer's Reference - MVVM mvvm_pattern.zul
<window sclass="cardSys" border="none" apply="org.zkoss.bind.BindComposer"
viewModel="@id('vm') @init('demo.composite.mvvm_pattern.ContributorVM')">
<style src="/widgets/composite/mvvm_pattern/Style.css" />
<borderlayout height="500px" sclass="mainLayout">
<center title="Contributor List">
<listbox sclass="contributor-list" model="@load(vm.contributorList)"
selectedItem="@bind(vm.selectedContributor)" vflex="true" hflex="true"
onSelect="@command('select')">
<listhead>
<listheader label="Title" width="80px" align="center" />
<listheader label="Full Name" align="center" />
<listheader label="Extension" width="80px" align="center" />
</listhead>
<template name="model" var="contributor">
<listitem>
<listcell label="@load(contributor.title)" />
<listcell label="@load(contributor.fullName)" />
<listcell label="@load(contributor.extension)" />
</listitem>
</template>
</listbox>
</center>
<east collapsible="true" title="Name Card Preview" width="350px">
<div sclass="card-pre" vflex="true">
<div sclass="card">
<image sclass="logo" src="/images/ZK-Logo.gif" />
<vlayout sclass="title">
<label sclass="name" value="@load(vm.previewContributor.fullName)" />
<hlayout sclass="dept">
<label value="@load(vm.previewContributor.title)" />
Contributor
</hlayout>
</vlayout>
<div sclass="number">
Tel:+1-23-456-789 ext
<label value="@load(vm.previewContributor.extension)" />
</div>
</div>
</div>
</east>
<south>
<grid sclass="editGrid"
form="@id('editor') @load(vm.previewContributor)
@load(vm.previewContributor, after={'create','preview'})
@save(vm.previewContributor, before={'save','preview','update','delete'})">
<auxhead>
<auxheader colspan="5" class="topic">Edit Data</auxheader>
</auxhead>
<columns>
<column label="Title" align="center" />
<column label="First Name" align="center" />
<column label="Last Name" align="center" />
<column label="Extension" align="center" />
<column label="Full Name" align="center" />
</columns>
<rows>
<row>
<combobox id="field_title" model="@load(vm.contributorTitles)" width="99%"
selectedItem="@bind(editor.title)" onChange='@command("preview")' />
<textbox id="field_firstName" value="@bind(editor.firstName)" width="95%"
onChange='@command("preview")' />
<textbox id="field_lastName" value="@bind(editor.lastName)" width="95%"
onChange='@command("preview")' />
<intbox id="field_ext" value="@bind(editor.extension)" width="95px"
onChange='@command("preview")' />
<label value="@load(editor.fullName)" />
</row>
<row>
<cell colspan="5">
<!-- Use vm.addingNewItemMode as status -->
<button label="CreateNew" onClick="@command('create')"
width="150px" height="30px" />
<button label="Save" onClick="@command('save')"
width="150px" height="30px" disabled='@bind(!vm.addingNewItemMode)' />
<button label="Update" onClick="@command('update')"
width="150px" height="30px" disabled='@bind(vm.addingNewItemMode)' />
<button label="Delete" onClick="@command('delete')"
width="150px" height="30px" disabled='@bind(vm.addingNewItemMode)' />
</cell>
</row>
</rows>
</grid>
</south>
</borderlayout>
</window>
ContributorVM.java
package demo.composite.mvvm_pattern;
import demo.data.ContributorData;
import demo.data.pojo.Contributor;
import org.zkoss.bind.annotation.Command;
import org.zkoss.bind.annotation.Init;
import org.zkoss.bind.annotation.NotifyChange;
import java.util.ArrayList;
import java.util.List;
public class ContributorVM {
private List<String> availTitles;
private List<Contributor> allContributors;
// Used for binding with selected data,
private Contributor selectedContributor;
// A temporary variable which is used for previewing and editing contributor
private Contributor previewContributor;
// Default is doing selection
private boolean addingNewItemMode = false;
@Init
public void init() {
// Preparing data
availTitles = new ArrayList<String>(new ContributorData().getTitles());
allContributors = new ArrayList<Contributor>(new ContributorData().getContributors());
// Select the first item as default
setSelectedContributor(allContributors.get(0));
copyToTemp(selectedContributor);
}
@Command("select")
@NotifyChange({ "previewContributor", "addingNewItemMode" })
public void selectContributor() {
copyToTemp(selectedContributor);
setAddingNewItemMode(false);
}
@Command("create")
@NotifyChange({ "previewContributor", "addingNewItemMode" })
public void createNewContributor() {
setPreviewContributor(getInitializedContributor());
setAddingNewItemMode(true);
}
@Command("preview")
@NotifyChange("previewContributor")
public void previewEditingContributor() {
}
@Command("save")
@NotifyChange({ "contributorList", "addingNewItemMode" })
public void addNewContributor() {
getContributorList().add(previewContributor);
setSelectedContributor(previewContributor);
setAddingNewItemMode(false);
}
@Command("update")
@NotifyChange({ "selectedContributor", "previewContributor" })
public void updateSelectedContributor() {
saveToSelected(previewContributor);
}
@Command("delete")
@NotifyChange({ "selectedContributor", "contributorList", "previewContributor", "addingNewItemMode" })
public void removeSelectedContributor() {
getContributorList().remove(selectedContributor);
setSelectedContributor(null);
setPreviewContributor(getInitializedContributor());
setAddingNewItemMode(true);
}
/* View Model API */
public List<String> getContributorTitles() {
return availTitles;
}
public List<Contributor> getContributorList() {
return allContributors;
}
public void setSelectedContributor(Contributor selected) {
this.selectedContributor = selected;
}
public Contributor getSelectedContributor() {
return selectedContributor;
}
public Contributor getPreviewContributor() {
return previewContributor;
}
public void setPreviewContributor(Contributor previewContributor) {
this.previewContributor = previewContributor;
}
public boolean isAddingNewItemMode() {
return addingNewItemMode;
}
public void setAddingNewItemMode(boolean addingNewItemMode) {
this.addingNewItemMode = addingNewItemMode;
}
private Contributor getInitializedContributor() {
return new Contributor("", "", getContributorTitles().get(0) + "", 0);
}
private void saveToSelected(Contributor contributor) {
selectedContributor.setFirstName(contributor.getFirstName());
selectedContributor.setLastName(contributor.getLastName());
selectedContributor.setTitle(contributor.getTitle());
selectedContributor.setExtension(contributor.getExtension());
}
private void copyToTemp(Contributor contributor) {
previewContributor = new Contributor(contributor.getFirstName(), contributor.getLastName(),
contributor.getTitle(), contributor.getExtension());
}
}
ContributorData.java
package demo.data;
import java.util.ArrayList;
import java.util.List;
import demo.data.pojo.Contributor;
import demo.data.pojo.LanguageContribution;
public class ContributorData {
private List<String> titles = new ArrayList<String>();
private List<Contributor> contributors = new ArrayList<Contributor>();
private List<LanguageContribution> languageContributions = new ArrayList<LanguageContribution>();
public ContributorData() {
titles.add("Code");
titles.add("Bug");
titles.add("Docs");
titles.add("Arts");
contributors.add(new Contributor("Kaleb", "Leonel", titles.get(0).toString(), 321));
contributors.add(new Contributor("Balu", "Haben", titles.get(0).toString(), 321));
contributors.add(new Contributor("Trey", "Wyatt", titles.get(0).toString(), 323));
contributors.add(new Contributor("Balu", "Chen", titles.get(0).toString(), 324));
contributors.add(new Contributor("Terry", "Tornado", titles.get(0).toString(), 711));
contributors.add(new Contributor("Jesse", "Miles", titles.get(1).toString(), 712));
contributors.add(new Contributor("Sadira", "Jobs", titles.get(1).toString(), 713));
contributors.add(new Contributor("Jaquan", "Frederick", titles.get(2).toString(), 451));
contributors.add(new Contributor("Avery", "Katrina", titles.get(2).toString(), 453));
contributors.add(new Contributor("Heidi", "Nikolas", titles.get(2).toString(), 455));
contributors.add(new Contributor("Katelyn", "Clara", titles.get(2).toString(), 457));
contributors.add(new Contributor("Branden", "Shane", titles.get(2).toString(), 459));
contributors.add(new Contributor("Dacey", "Obert", titles.get(2).toString(), 450));
contributors.add(new Contributor("Julianna", "Allison", titles.get(3).toString(), 643));
contributors.add(new Contributor("Rachel", "Elisabeth", titles.get(3).toString(), 644));
contributors.add(new Contributor("Clarissa", "Francesca", titles.get(3).toString(), 645));
contributors.add(new Contributor("Gabby", "Taffy", titles.get(3).toString(), 646));
languageContributions.add(new LanguageContribution("Arabic (ar)", "Ayman Elgharabawy", "iso-8859-6"));
languageContributions.add(new LanguageContribution("Hungarian (hu)", "Andreas Klein", "iso-8859-2"));
languageContributions.add(new LanguageContribution("Italian (it)", "Matteo Barbieri", "iso-8859-1"));
languageContributions.add(new LanguageContribution("Indonesian (id)", "James Liam Supangkat", "iso-8859-1"));
languageContributions.add(new LanguageContribution("Japanese (ja)", "Poli Lee", " iso-2022-jp"));
languageContributions.add(new LanguageContribution("Korean (ko)", "Deok-su Lee", "euc-kr"));
languageContributions.add(new LanguageContribution("Dutch (nl)", "Wido Jansen", "iso-8859-1"));
languageContributions.add(new LanguageContribution("Portuguese (pt)", "Airton Carrara", "iso-8859-1"));
languageContributions.add(new LanguageContribution("Brazilian Portugese (pt_BR)", "Airton Carrara", "iso-8859-1"));
languageContributions.add(new LanguageContribution("Romanian (ro)", "Calin Vaida", "iso-8859-2"));
languageContributions.add(new LanguageContribution("Russian (ru)", "Denis Yarkovoy", "iso-8859-1"));
languageContributions.add(new LanguageContribution("French (fr)", "Jêrôme Vergereau", "iso-8859-1"));
languageContributions.add(new LanguageContribution("Spanish (es)", "Daniel Octavio Ruiz Rodriguez", "iso-8859-1"));
languageContributions.add(new LanguageContribution("German (de)", "H.-Dirk Schmitt", "iso-8859-1"));
languageContributions.add(new LanguageContribution("Czech (cs)", "Pavel Mica", "iso-8859-2"));
languageContributions.add(new LanguageContribution("Catalan (ca)", "Xavier Covas O'Ryan", "iso-8859-1"));
languageContributions.add(new LanguageContribution("Bulgarian (bg) ", "Boril Yonchev", "iso-8859-5"));
languageContributions.add(new LanguageContribution("Ukrainian (uk)", "Denis Yarkovoy", "iso-8859-5"));
languageContributions.add(new LanguageContribution("Turkish (tr)", "Kursat Kurt", "iso-8859-9"));
languageContributions.add(new LanguageContribution("Swedish (sv)", "Easit AB", "iso-8859-1"));
languageContributions.add(new LanguageContribution("Slovenian (sl) ", "Ziga", "iso-8859-2"));
}
public List<String> getTitles() {
return titles;
}
public List<Contributor> getContributors() {
return contributors;
}
public List<LanguageContribution> getLanguageContributors() {
return languageContributions;
}
}
Contributor.java
package demo.data.pojo;
import org.zkoss.bind.annotation.DependsOn;
public class Contributor {
private String title;
private String firstName;
private String lastName;
private Integer extension;
public Contributor(String firstName, String lastName, String title, Integer ext) {
setFirstName(firstName);
setLastName(lastName);
setTitle(title);
setExtension(ext);
}
public Contributor() {
setFirstName("");
setLastName("");
setTitle("Code");
setExtension(12345);
}
public String getFirstName() {
return firstName;
}
public void setFirstName(String fn) {
firstName = fn;
}
public String getLastName() {
return lastName;
}
public void setLastName(String ln) {
lastName = ln;
}
public String getTitle() {
return title;
}
public void setTitle(String tl) {
title = tl;
}
public Integer getExtension() {
return extension;
}
public void setExtension(Integer ext) {
extension = ext;
}
@DependsOn({ "firstName", "lastName" })
public String getFullName() {
return getFirstName() + " " + getLastName();
}
}
LanguageContribution.java
package demo.data.pojo;
public class LanguageContribution {
private String language, name, charset;
public LanguageContribution(String language, String name, String charset) {
this.language = language;
this.name = name;
this.charset = charset;
}
public String getLanguage() {
return language;
}
public void setLanguage(String language) {
this.language = language;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getCharset() {
return charset;
}
public void setCharset(String charset) {
this.charset = charset;
}
}
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