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index.zulzul<zk>
<window border="normal" title="hello" apply="pkg$.TestComposer">
<grid id="grid" sclass="narrow" style="overflow: auto;" height="200px" width="200px">
<columns>
<column>
<checkbox id="all" checked="false" />
</column>
<column/>
</columns>
<foot>
<footer>
<button id="testSelection">Selection</button>
</footer>
</foot>
</grid>
</window>
</zk>
TestComposer.javajava
import java.util.ArrayList;
import java.util.List;
import java.util.Iterator;
import org.zkoss.zk.ui.Component;
import org.zkoss.zk.ui.event.Event;
import org.zkoss.zk.ui.event.EventListener;
import org.zkoss.zk.ui.event.Events;
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.Checkbox;
import org.zkoss.zul.Grid;
import org.zkoss.zul.Label;
import org.zkoss.zul.ListModelList;
import org.zkoss.zul.Row;
import org.zkoss.zul.RowRenderer;
import org.zkoss.zul.event.ZulEvents;
public class TestComposer extends SelectorComposer<Component> {
private class Datamodel {
private boolean selected;
private String data;
public Datamodel(String data, boolean selected) {
super();
this.selected = selected;
this.data = data;
}
public void setSelected(boolean selected) {
this.selected = selected;
}
public boolean isSelected() {
return selected;
}
public String getData() {
return data;
}
}
private class AfterRenderGridEventListener implements EventListener<Event> {
private Grid grid;
public AfterRenderGridEventListener(final Grid grid) {
this.grid = grid;
}
@Override
public void onEvent(Event event) throws Exception {
// this.grid.invalidate();
}
}
@Wire
private Grid grid;
@Wire
private Checkbox all;
// keep the same ListModelList to manipulate the model only
private ListModelList<Datamodel> myListModel;
@Listen("onClick = #testSelection")
public void testSelection() {
alert("selected row count: " + myListModel.getSelection().size());
}
/** onClick Callback für die Alles-Auswählen Checkbox. */
@Listen("onClick = #all")
public void selectAll() {
// no need to force rerendering, just operate on the data in the model
for (Datamodel datamodel : myListModel) {
datamodel.setSelected(all.isChecked());
// myListModel.notifyChange(datamodel) // 8.0.1+;
//myListModel.update(datamodel); // 8.0.0
//if (datamodel.isSelected()) {
// myListModel.addToSelection(datamodel);
//} else {
// myListModel.removeFromSelection(datamodel);
//}
Iterator renderedCheckboxes = grid.queryAll("checkbox.itemSelection").iterator();
while(renderedCheckboxes.hasNext()) {
((Checkbox)renderedCheckboxes.next()).setChecked(all.isChecked());
}
}
}
public List<Datamodel> createViewList() {
List<Datamodel> viewList = new ArrayList<Datamodel>();
for (int i = 0; i < 100; i++)
viewList.add(new Datamodel("item" + i, false));
return viewList;
}
public void doAfterCompose(Component comp) throws Exception {
super.doAfterCompose(comp);
List<Datamodel> viewList = createViewList();
grid.addEventListener(ZulEvents.ON_AFTER_RENDER, new AfterRenderGridEventListener(grid));
myListModel = new ListModelList<Datamodel>(viewList);
myListModel.setMultiple(true); // enable multiple selection (defaults to single selection)
grid.setModel(myListModel);
grid.setRowRenderer(new MyRenderer());
}
private class MyRenderer implements RowRenderer<Datamodel> {
public void render(Row row, Datamodel data, int index) {
Checkbox selected = new Checkbox();
selected.setChecked(data.isSelected());
selected.setSclass("itemSelection"); //just to find it more easily
selected.addEventListener(Events.ON_CLICK, new EventListener<Event>() {
@Override
public void onEvent(Event event) throws Exception {
changeDataSelection((Checkbox) event.getTarget());
}
});
row.appendChild(selected);
row.appendChild(new Label(data.getData()));
row.setValue(data);
}
}
private void changeDataSelection(Checkbox target) {
// no need to force rerendering, just operate on the data in the model
Datamodel data = ((Row) target.getParent()).getValue();
data.setSelected(target.isChecked());
if (data.isSelected()) {
myListModel.addToSelection(data);
} else {
myListModel.removeFromSelection(data);
}
// in case rerendering of the record is required just notify the single element in the ListModel
// myListModel.notifyChange(data); //8.0.1+will trigger rerendering of just this row... based on the change
// myListModel.update(data); //8.0.0will trigger rerendering of just this row... based on the change
// in the ListModelList
}
}