Bug 153523 OK button in parameter dialog is enabled without default value in combo-box
Description: OK button in parameter dialog is enabled without default value in combo-box Steps to reproduce: 1. New a report parameter, combo-box. 2. Click New button, input abc as value, click OK 3. Set abc as default value and close Edit Parameter dialog. 4. New a data source and dataset 5. Edit the parameter, remove abc value and import values from dataset Expected result: OK button is disabled for there is no default value. Actual result: OK button is enabled.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/CascadingParametersDialog.java
{
						ExceptionHandler.handle( e1 );
					}
				}
			}
		} );
	}
	private void createLabel( Composite parent, String content, int width )
	{
		Label label = new Label( parent, SWT.NONE );
		setLabelLayoutData( label, width );
		if ( content != null )
		{
			label.setText( content );
		}
	}
	private void setLabelLayoutData( Control control, int width )
	{
		GridData gd = new GridData( GridData.VERTICAL_ALIGN_BEGINNING );
		gd.widthHint = width;
		control.setLayoutData( gd );
	}
	/*
	 * set input for dialog
	 */
	public void setInput( Object input )
	{
		Assert.isNotNull( input );
		Assert.isLegal( input instanceof CascadingParameterGroupHandle );
		inputParameterGroup = (CascadingParameterGroupHandle) input;