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Home » Eclipse Projects » Standard Widget Toolkit (SWT) » Problem when including combo boxes as subitems in multi column tree.(Problem when including combo boxes as subitems in multi column tree.)
Problem when including combo boxes as subitems in multi column tree. [message #491459] Wed, 14 October 2009 16:35 Go to next message
No real name is currently offline No real nameFriend
Messages: 2
Registered: October 2009
Junior Member
Hi,
I am trying to create a multi column tree with combos in some sub items.
This actually works fine except that a combo in addition appears at the upper left corner of the tree.
The problem only appears with combo boxes, NOT with other SWT widgets.
Any idea why this happens ?
(I use Windows Pro and Eclipse 3.4)

Find the code below.
Thanks,
Thomas

import java.util.Arrays;

import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.TreeEditor;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Combo;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Tree;
import org.eclipse.swt.widgets.TreeColumn;
import org.eclipse.swt.widgets.TreeItem;

public class MultiColumnTreeWithCombo {
public static void main(String[] args) {
final int SOU = 0;
final int PIF = 1;
final int DAE = 2;
final int SSI = 3;

Display display = new Display();
final Shell shell = new Shell(display);
shell.setLayout(new FillLayout());
Tree map = new Tree(shell, SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL);

map.addListener(SWT.MeasureItem, new Listener() {
public void handleEvent(Event event) {
// sets the height of the entire row to fit the control
event.height = 25;
}
});

map.setHeaderVisible(true);
map.setLinesVisible(true);

for (int a=0;a<4;a++)
{
TreeColumn column = new TreeColumn(map, SWT.LEFT);
column.setText("Column"+a);
column.pack();
}

for(int i = 0; i<5; i++)
{
TreeItem tItem = new TreeItem (map, SWT.NONE);
tItem.setText (SOU, "item1_"+i);
tItem.setText (PIF, "item2_"+i);


for(int k = 0; k<3; k++)
{

TreeItem subItem = new TreeItem(tItem, SWT.NONE);
subItem.setText(DAE,("item3_" + k));

Combo sSignalCombo = new Combo(map, SWT.NONE);

for(int z = 0; z<3; z++)
{
sSignalCombo.add("item4_" + z);
}

String[] ssItems = sSignalCombo.getItems();
Arrays.sort(ssItems);
sSignalCombo.setItems(ssItems);


sSignalCombo.computeSize(SWT.DEFAULT, map.getItemHeight());
sSignalCombo.pack();


TreeEditor ssEditor = new TreeEditor(map);
ssEditor.minimumWidth = sSignalCombo.getSize().x;
ssEditor.grabHorizontal = true;
ssEditor.setEditor(sSignalCombo, subItem, SSI);

}
}

shell.pack();
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) {
display.sleep();
}
}
display.dispose();
}
}
Re: Problem when including combo boxes as subitems in multi column tree. [message #491941 is a reply to message #491459] Fri, 16 October 2009 15:42 Go to previous messageGo to next message
Grant Gayed is currently offline Grant GayedFriend
Messages: 2151
Registered: July 2009
Senior Member
Removing the "sSignalCombo.pack();" fixes this for me. Also, the
computeSize() line above it can go away since you aren't using its return
value for anything.

Grant


<thomas_wuerz@mentor.com> wrote in message
news:hb4ul8$ku8$1@build.eclipse.org...
> Hi,
> I am trying to create a multi column tree with combos in some sub items.
> This actually works fine except that a combo in addition appears at the
upper left corner of the tree.
> The problem only appears with combo boxes, NOT with other SWT widgets.
> Any idea why this happens ?
> (I use Windows Pro and Eclipse 3.4)
>
> Find the code below.
> Thanks,
> Thomas
>
> import java.util.Arrays;
>
> import org.eclipse.swt.SWT;
> import org.eclipse.swt.custom.TreeEditor;
> import org.eclipse.swt.layout.FillLayout;
> import org.eclipse.swt.widgets.Combo;
> import org.eclipse.swt.widgets.Display;
> import org.eclipse.swt.widgets.Event;
> import org.eclipse.swt.widgets.Listener;
> import org.eclipse.swt.widgets.Shell;
> import org.eclipse.swt.widgets.Tree;
> import org.eclipse.swt.widgets.TreeColumn;
> import org.eclipse.swt.widgets.TreeItem;
>
> public class MultiColumnTreeWithCombo {
> public static void main(String[] args) {
> final int SOU = 0;
> final int PIF = 1;
> final int DAE = 2;
> final int SSI = 3;
>
> Display display = new Display();
> final Shell shell = new Shell(display);
> shell.setLayout(new FillLayout());
> Tree map = new Tree(shell, SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL);
>
> map.addListener(SWT.MeasureItem, new Listener() {
> public void handleEvent(Event event) {
> // sets the height of the entire row to fit the control
> event.height = 25;
> }
> });
>
> map.setHeaderVisible(true);
> map.setLinesVisible(true);
>
> for (int a=0;a<4;a++)
> {
> TreeColumn column = new TreeColumn(map, SWT.LEFT);
> column.setText("Column"+a);
> column.pack();
> }
>
> for(int i = 0; i<5; i++)
> {
> TreeItem tItem = new TreeItem (map, SWT.NONE);
> tItem.setText (SOU, "item1_"+i);
> tItem.setText (PIF, "item2_"+i);
>
>
> for(int k = 0; k<3; k++)
> {
>
> TreeItem subItem = new TreeItem(tItem, SWT.NONE);
> subItem.setText(DAE,("item3_" + k));
>
> Combo sSignalCombo = new Combo(map, SWT.NONE);
>
> for(int z = 0; z<3; z++)
> {
> sSignalCombo.add("item4_" + z);
> }
>
> String[] ssItems = sSignalCombo.getItems();
> Arrays.sort(ssItems);
> sSignalCombo.setItems(ssItems);
>
>
> sSignalCombo.computeSize(SWT.DEFAULT, map.getItemHeight());
> sSignalCombo.pack();
>
>
> TreeEditor ssEditor = new TreeEditor(map);
> ssEditor.minimumWidth = sSignalCombo.getSize().x;
> ssEditor.grabHorizontal = true;
> ssEditor.setEditor(sSignalCombo, subItem, SSI);
>
> }
> }
>
> shell.pack();
> shell.open();
> while (!shell.isDisposed()) {
> if (!display.readAndDispatch()) {
> display.sleep();
> }
> }
> display.dispose();
> }
> }
>
Re: Problem when including combo boxes as subitems in multi column tree. [message #492049 is a reply to message #491941] Sat, 17 October 2009 16:43 Go to previous message
No real name is currently offline No real nameFriend
Messages: 2
Registered: October 2009
Junior Member
Many thanks, Grant
Works for me as well.
Copy/paste problem.Sorry.
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