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index.zulzul<zk>
<window border="normal" title="hello" apply="pkg$.TestComposer">
<vlayout>
Is there any "scrollIntoCenter" method or something like that? I want the selected treeitem to be i the center of the visible area, not at the bottom of it.
In my application the tree does not have a fixed height
<button id="btn" label="Click to select item 100. Tree will scroll so that item 100 is at the bottom of the tree's visible area, not the center." />
<button id="btn2" label="Click to select item 100 showing what i want to achieve. Item 100 is in center of visible area in tree" />
<tree id="tree" height="300px">
<treechildren id="tc" />
</tree>
</vlayout>
</window>
</zk>
TestComposer.javajavaimport org.zkoss.zk.ui.*;
import org.zkoss.zk.ui.event.*;
import org.zkoss.zk.ui.util.*;
import org.zkoss.zk.ui.ext.*;
import org.zkoss.zk.au.*;
import org.zkoss.zk.au.out.*;
import org.zkoss.zul.*;
public class TestComposer extends GenericForwardComposer{
private Treeitem treeitem100;
private Treeitem treeitem94;
public void doAfterCompose(Component comp) throws Exception {
super.doAfterCompose(comp);
for( int i=1; i<200; ++i) {
Treeitem ti = new Treeitem("Item " + i);
ti.setParent(comp.getFellow("tc"));
if( i==100) {
treeitem100 = ti;
treeitem100.addEventListener("onDoSetSelected", new EventListener() {
public void onEvent(Event event) {
treeitem100.setSelected(true);
}
});
} else if( i==94) {
treeitem94 = ti;
}
}
}
public void onClick$btn(Event e) throws InterruptedException{
treeitem100.setSelected(true);
}
public void onClick$btn2(Event e) throws InterruptedException{
Clients.scrollIntoView(treeitem94);
Events.echoEvent("onDoSetSelected",treeitem100,null);
}
}