Suggested case list:
Using timer to refresh a grid
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1TonyQ114.25.109.94d0n3krApr 21, 2012 10:43:27 AMlinkUsing timer to refresh a grid
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2guest172.70.211.622fc2tvbOct 4, 2022 10:11:24 AMlinkresources
index.zulzul<zk>
<!--<script><![CDATA[
zk.afterLoad("zul.sel", function () {
var _xTree = {};
zk.override(zul.sel.Tree.prototype, _xTree, {
setSelectedItem: function (item) {
if (this.isClientRodEnabled()) {
var index = this._getItemIndex(item),
selTop = index * this._avgrowhgh,
selBtm = selTop + this._avgrowhgh,
ebody = this.ebody;
if (ebody && item) {
var bdTop = zul.mesh.Scrollbar.getScrollPosV(this);
// ZK-3928: if already in view port, skip
if (selTop < bdTop || selBtm > (bdTop + ebody.offsetHeight)) {
this._shallMoveScrollTop = selTop;
}
}
}
if(item){
//apply original method
var result = _xTree.setSelectedItem.apply(this, arguments);
return result;
}else{
//apply super method to still remove selection, but skipping the ROD-enabling direct parent method
this.$supers("setSelectedItem", arguments);
}
}
});
});
]]></script>-->
<window border="normal" title="hello" apply="pkg$.TestComposer">
<vlayout>
<div>Select an element in the tree and then scroll the tree further down and click the clear selection and see what happens</div>
<separator/>
<button id="btn" label="Clear tree selection" />
<button id="btn2" label="Clear listbox selection" />
<div/>
</vlayout>
<tree id="theTree" width="200px" height="300px" />
<listbox id="lb" width="200px" height="300px" />
</window>
</zk>
TestComposer.javajava
import java.util.ArrayList;
import java.util.List;
import java.util.Locale;
import org.zkoss.zk.ui.Component;
import org.zkoss.zk.ui.event.Event;
import org.zkoss.zk.ui.util.GenericForwardComposer;
import org.zkoss.zul.DefaultTreeModel;
import org.zkoss.zul.DefaultTreeNode;
import org.zkoss.zul.ListModelList;
import org.zkoss.zul.Listbox;
import org.zkoss.zul.Tree;
import org.zkoss.zul.Window;
public class TestComposer extends GenericForwardComposer{
public void doAfterCompose(Component comp) throws Exception {
super.doAfterCompose(comp);
List<DefaultTreeNode> childnodes = new ArrayList<DefaultTreeNode>();
for( int i=0; i<500; ++i) {
childnodes.add(new DefaultTreeNode("" + i));
}
DefaultTreeNode root = new DefaultTreeNode("",childnodes);
((Tree) comp.getFellow("theTree")).setModel(new DefaultTreeModel(root));
((Listbox) comp.getFellow("lb")).setModel(new ListModelList(Locale.getAvailableLocales()));
}
public void onClick$btn(Event event) throws InterruptedException{
Window window = (Window)event.getTarget();
Tree tree = (Tree)window.getFellow("theTree");
// Messagebox.show("calling clear selection on " + tree);
tree.clearSelection();
}
public void onClick$btn2(Event event) throws InterruptedException{
Window window = (Window)event.getTarget();
Listbox lb = (Listbox)window.getFellow("lb");
// Messagebox.show("calling clear selection on " + tree);
lb.clearSelection();
}
}