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index.zulzul<zk xmlns:x="xhtml">
<div id="bind" viewModel="@id('vm') @init('pkg$.ForEachVM')">
<div id="host">
**Start**
<forEach begin="@load(vm.begin)" end="@load(vm.end)" step="@load(vm.step)"
var="x">
<div>
**Nested Start**
<forEach begin="1" end="9" step="5">
<!--<label value="${each}"/>-->
<label value="@load(each)"/>
<label value="nextTOPE"/>
</forEach>
**Nested Middle**
<if test="@load(vm.var eq 'item')">
<forEach begin="@load(vm.begin)" end="@load(vm.end)" step="@load(vm.step + 3)"
var="@load(vm.var)">
<label value="${item}"/>
</forEach>
</if>
**Nested End**
</div>
</forEach>
**Middle**
<forEach begin="1" end="9" step="5">
<label value="${each} + ${item}"/>
</forEach>
**End**
</div>
<button label="update range 1~5" onClick='@command("updateRange",begin=1,end=5)'/>
<button label="update range 5~9" onClick='@command("updateRange",begin=5,end=9)'/>
<button label="update step 3" onClick='@command("updateStep",step=3)'/>
<button label="update var" onClick='@command("updateVar",var="item")'/>
</div>
</zk>ForEachVM.javajavaimport java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import org.zkoss.bind.BindContext;
import org.zkoss.bind.Converter;
import org.zkoss.bind.annotation.BindingParam;
import org.zkoss.bind.annotation.Command;
import org.zkoss.bind.annotation.NotifyChange;
import org.zkoss.zk.ui.Component;
import org.zkoss.zk.ui.UiException;
public class ForEachVM {
private int begin = 1;
private int end = 9;
private int step = 2;
private String var = "each";
private java.util.List list = Arrays.asList("1","2","3");
public void setDataList(List array) { list = array;}
public List getDataList() {
return list;
}
@SuppressWarnings("serial")
private List<Person> small = new ArrayList<Person>() {{
for (int i = 0; i < 3; i++)
add(new Person(String.valueOf(i), i +"@zkoss.org"));
}};
@SuppressWarnings("serial")
private List<Person> standard = new ArrayList<Person>() {{
for (int i = 0; i < 6; i++)
add(new Person(String.valueOf(i), i +"@zkoss.org"));
}};
@SuppressWarnings("serial")
private List<Person> large = new ArrayList<Person>() {{
for (int i = 0; i < 15; i++)
add(new Person(String.valueOf(i), i +"@zkoss.org"));
}};
public List<Person> getSmallItems() {
return small;
}
public void setSmallItems(List<Person> small) {
this.small = small;
}
public List<Person> getStandardItems() {
return standard;
}
public void setStandardItems(List<Person> standard) {
this.standard = standard;
}
public List<Person> getLargeItems() {
return large;
}
public void setLargeItems(List<Person> large) {
this.large = large;
}
public int getBegin() {
return begin;
}
public void setBegin(int begin) {
this.begin = begin;
}
public int getEnd() {
return end;
}
public void setEnd(int end) {
this.end = end;
}
public void setStep(int step) {
this.step = step;
}
public int getStep() {
return step;
}
public void setVar(String var) {
this.var = var;
}
public String getVar() {
return var;
}
public void setTemplate(String s){}
public String getTemplate() {
return "apply";
}
@Command
@NotifyChange({"begin", "end"})
public void updateRange(@BindingParam("begin") int begin, @BindingParam("end") int end) {
this.begin = begin;
this.end = end;
}
@Command
@NotifyChange("step")
public void updateStep(@BindingParam("step") int step) {
if (step <= 0)
throw new UiException("Step cannot be 0 or less than 0!");
this.step = step;
}
@Command
@NotifyChange("var")
public void updateVar(@BindingParam("var") String var) {
this.var = var;
}
@Command
@NotifyChange("dataList")
public void updateDataList(@BindingParam("data") String data) {
if ("large".equals(data)) {
list = large;
} else if ("small".equals(data)) {
list = small;
} else {
list = standard;
}
}
private Converter concat = new ConcatConverter();
public void setConcatConverter(Converter c) {}
public Converter getConcatConverter() { return concat;}
public static class ConcatConverter implements Converter {
public Object coerceToUi(Object val, Component comp, BindContext ctx) {
//user sets format in annotation of binding or args when calling binder.addPropertyBinding()
final Number x = (Number) ctx.getConverterArg("x");
final Number y = (Number) ctx.getConverterArg("y");
final Number z = (Number) ctx.getConverterArg("z");
final String format = (String) ctx.getConverterArg("format");
return String.format(format, x, y, z);
}
public Object coerceToBean(Object val, Component comp, BindContext ctx) {
return null;
}
}
}
class Person {
private String name, address;
public Person(String name, String address) {
this.name = name;
this.address = address;
}
public void setName(String name) {
this.name = name;
}
public String getName() {
return name;
}
public void setAddress(String address) {
this.address = address;
}
public String getAddress() {
return address;
}
public String toString() {
return name + "@" + address;
}
}