Bug 122365 In data set dialog, add parameter first then edit query, parameter value will be cleared out.
Description: In data set dialog, add parameter first then edit query, parameter value will be cleared out. Steps to reproduce: 1. Add a data set. 2. In data set dialog, add a parameter. 3. Edit query and use this parameter. 4. Preview in data set dialog, it works. 5. Change to "parameter" page, its value is cleared out.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/dialogs/PropertyHandleTableViewer.java
public void widgetDefaultSelected(SelectionEvent e)
                {
                }
                
            });
        }
        
        if(showMenus)
        {
            Menu menu = new Menu(viewer.getTable());
            menu.addMenuListener(new MenuAdapter(){
                public void menuShown(MenuEvent e)
                {
                    viewer.cancelEditing();
                }
            });
            itmRemove = new MenuItem(menu, SWT.NONE);
            itmRemove .setText(Messages.getString("PropertyHandleTableViewer.Menu.Remove")); 
            itmRemove .addSelectionListener(new SelectionAdapter(){
                public void widgetSelected(SelectionEvent e)
                {
                    removeSelectedItem();
                }
            });
            itmRemoveAll = new MenuItem(menu, SWT.NONE);
            itmRemoveAll.setText(Messages.getString("PropertyHandleTableViewer.Menu.RemoveAll")); 
            itmRemoveAll.addSelectionListener(new SelectionAdapter(){
                public void widgetSelected(SelectionEvent e)
                {
                    try