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index.zulzul<!--
Steps to reproduce:
1) Click "Append Column"
2) Click "Show all"
3) Scroll to the right. The bdfaker is missing. Headers are not in sync with cells.
-->
<zk>
<window apply="pkg$.TestComposer">
<hlayout hflex="1" vflex="1">
<panel hflex="1" vflex="1">
<panelchildren>
<grid id="grid" height="800px" width="1300px">
<columns></columns>
<rows></rows>
</grid>
</panelchildren>
</panel>
<button id="appendColumn" label="Append Column"/>
<button id="showContent" label="Show all"/>
</hlayout>
</window>
</zk>TestComposer.javajavaimport org.zkoss.zk.ui.Component;
import org.zkoss.zk.ui.select.SelectorComposer;
import org.zkoss.zk.ui.select.annotation.Wire;
import org.zkoss.zul.Button;
import org.zkoss.zul.Cell;
import org.zkoss.zul.Column;
import org.zkoss.zul.Grid;
import org.zkoss.zul.Label;
import org.zkoss.zul.ListModelList;
import org.zkoss.zul.RowRenderer;
import org.zkoss.zul.Window;
import java.util.ArrayList;
import java.util.List;
public class TestComposer extends SelectorComposer<Window> {
protected int numberOfAdditionalCols = 3;
private static final int NUMBER_OF_ROWS = 1000;
@Wire
private Grid grid;
@Wire
private Button appendColumn;
@Wire
private Button showContent;
private ListModelList<TestListItem> model;
private List<TestListItem> itemList;
public void doAfterCompose(Window comp) throws Exception {
super.doAfterCompose(comp);
model = new ListModelList<>();
grid.setModel(model);
for (int i = 0; i < numberOfAdditionalCols; i++) {
Column name = new Column("Name");
name.setWidth("400px");
grid.getColumns().getChildren().add(name);
}
RowRenderer renderer = new MyRowRenderer(this, grid);
grid.setRowRenderer(renderer);
setData();
model.addAll(itemList.subList(0,10));
appendColumn.addEventListener("onClick", event -> appendColumn());
showContent.addEventListener("onClick", event -> showAll());
}
private void showAll() {
model.clear();
model.addAll(itemList);
}
public void appendColumn() {
Column col = new Column("Name");
col.setWidth("400px");
grid.getColumns().appendChild(col);
for(Component row: grid.getRows().getChildren()) {
Cell cell = new Cell();
cell.appendChild(new Label("name 3"));
row.appendChild(cell);
}
numberOfAdditionalCols++;
}
private List<TestListItem> setData() {
ArrayList<TestListItem> list = new ArrayList<>();
itemList = new ArrayList<>();
for (int i = 0; i < NUMBER_OF_ROWS; i++) {
list.add(createAndAddItem("name" + i));
}
this.itemList = new ArrayList<>(list);
return list;
}
private TestListItem createAndAddItem(String name) {
final TestListItem testItem = new TestListItem();
testItem.setName(name);
return testItem;
}
}MyRowRenderer.javajavaimport org.zkoss.zk.ui.util.Clients;
import org.zkoss.zul.Cell;
import org.zkoss.zul.Grid;
import org.zkoss.zul.Label;
import org.zkoss.zul.RendererCtrl;
import org.zkoss.zul.Row;
import org.zkoss.zul.RowRenderer;
public class MyRowRenderer implements RowRenderer<Object>, RendererCtrl {
private Grid grid;
private TestComposer composer;
public MyRowRenderer(TestComposer composer, Grid grid) {
this.grid = grid;
this.composer = composer;
}
public void render(final Row row, final Object data, int index) {
for (int i = 0; i < composer.numberOfAdditionalCols; i++) {
Cell cell = new Cell();
cell.setParent(row);
new Label("name "+i).setParent(cell);
}
}
@Override
public void doTry() {
}
@Override
public void doCatch(Throwable ex) throws Throwable {
}
@Override
public void doFinally() {
}
}
TestListItem.javajavaimport org.zkoss.idom.Document;
import org.zkoss.idom.Group;
import org.zkoss.idom.Item;
import org.zkoss.xml.Locator;
import java.math.BigDecimal;
public class TestListItem implements Item {
private String name;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
@Override
public String getText() {
return null;
}
@Override
public void setText(String s) {
}
@Override
public Document getDocument() {
return null;
}
@Override
public Item detach() {
return null;
}
@Override
public Group getParent() {
return null;
}
@Override
public Locator getLocator() {
return null;
}
@Override
public void setLocator(Locator locator) {
}
@Override
public Object clone() {
return null;
}
@Override
public void setParent(Group group) {
}
}