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index.zulzul<window apply="pkg$.TestComposer">
<listbox id="listbox">
<listhead>
<listheader label="Category" />
<listheader label="Name" />
<listheader label="Top Nutrients" />
</listhead>
</listbox>
</window>TestComposer.javajavaimport java.util.ArrayList;
import java.util.Comparator;
import java.util.List;
import java.util.Set;
import org.zkoss.zk.ui.event.SelectEvent;
import org.zkoss.zk.ui.select.SelectorComposer;
import org.zkoss.zk.ui.select.annotation.Listen;
import org.zkoss.zk.ui.select.annotation.Wire;
import org.zkoss.zul.GroupComparator;
import org.zkoss.zul.GroupsModelArray;
import org.zkoss.zul.Label;
import org.zkoss.zul.ListModelArray;
import org.zkoss.zul.Listbox;
import org.zkoss.zul.Listcell;
import org.zkoss.zul.Listgroup;
import org.zkoss.zul.Listgroupfoot;
import org.zkoss.zul.Listheader;
import org.zkoss.zul.Listitem;
import org.zkoss.zul.ListitemRenderer;
import org.zkoss.zul.Window;
import pkg$.TestComposer.FoodGroupModel.FoodGroupInfo;
@SuppressWarnings("serial")
public class TestComposer extends SelectorComposer<Window> {
static class Food {
private String category;
private String name;
private String topNutrients;
public Food(String category, String name, String topNutrients) {
setCategory(category);
setName(name);
setTopNutrients(topNutrients);
}
public String getCategory() {
return category;
}
public void setCategory(String category) {
this.category = category;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getTopNutrients() {
return topNutrients;
}
public void setTopNutrients(String topNutrients) {
this.topNutrients = topNutrients;
}
}
static class FoodData {
private static List<Food> foods = new ArrayList<Food>();
static {
foods.add(new Food("Vegetables", "Asparagus", "Vitamin K"));
foods.add(new Food("Vegetables", "Beets", "Folate"));
foods.add(new Food("Seafood", "Salmon", "Tryptophan"));
foods.add(new Food("Seafood", "Shrimp", "Tryptophan"));
}
public static List<Food> getAllFoods() {
return foods;
}
}
static class FoodGroupComparator implements GroupComparator<Food> {
public int compareGroup(Food food1, Food food2) {
return Math.abs(compare(food1, food2));
}
public int compare(Food food1, Food food2) {
return food1.getCategory().compareTo(food2.getCategory());
}
}
static class FoodGroupModel extends GroupsModelArray<Food, FoodGroupModel.FoodGroupInfo, Object, Object> {
public FoodGroupModel(Food[] data, Comparator<Food> compr) {
super(data, compr);
}
protected FoodGroupInfo createGroupHead(Food[] groupData, int index, int column) {
return new FoodGroupInfo(groupData[0], index, column);
}
protected Object createGroupFoot(Food[] groupData, int index, int column) {
return groupData.length;
}
static class FoodGroupInfo {
private Food firstChild;
private int groupIndex;
private int columnIndex;
public FoodGroupInfo(Food firstChild, int groupIndex, int columnIndex) {
this.firstChild = firstChild;
this.groupIndex = groupIndex;
this.columnIndex = columnIndex;
}
public Food getFirstChild() {
return firstChild;
}
public int getGroupIndex() {
return groupIndex;
}
public int getColumnIndex() {
return columnIndex;
}
}
}
static class FoodGroupRenderer implements ListitemRenderer<Object> {
public void render(Listitem item, Object obj, int index) throws Exception {
if (item instanceof Listgroup) {
FoodGroupInfo groupInfo = (FoodGroupInfo) obj;
Food food = groupInfo.getFirstChild();
String groupTxt;
switch (groupInfo.getColumnIndex()) {
case 0:
groupTxt = food.getCategory();
break;
case 1:
groupTxt = food.getName();
break;
case 2:
groupTxt = food.getTopNutrients();
break;
default:
groupTxt = food.getCategory();
}
item.appendChild(new Listcell(groupTxt));
item.setValue(obj);
} else if (item instanceof Listgroupfoot) {
Listcell cell = new Listcell();
cell.appendChild(new Label("Total " + obj + " Items"));
cell.setSpan(3);
item.appendChild(cell);
} else {
Food data = (Food) obj;
item.appendChild(new Listcell(data.getCategory()));
item.appendChild(new Listcell(data.getName()));
item.appendChild(new Listcell(data.getTopNutrients()));
item.setValue(data);
}
}
}
@Wire
private Listbox listbox;
private GroupsModelArray<Food, FoodGroupInfo, Object, Object> groupModel;
private ListitemRenderer<Object> groupRenderer = new FoodGroupRenderer();
@Override
public void doAfterCompose(Window comp) throws Exception {
super.doAfterCompose(comp);
org.zkoss.lang.Library.setProperty("org.zkoss.zul.listbox.rod","false");
Food[] foods = FoodData.getAllFoods().toArray(new Food[] {});
groupModel = new FoodGroupModel(foods, new FoodGroupComparator());
groupModel.setMultiple(true);
for (Food food : foods)
groupModel.addToSelection(food);
listbox.setCheckmark(true);
listbox.setModel(groupModel);
listbox.setItemRenderer(groupRenderer);
}
}