Bug 136833 Group key is affected by Generate All button in group.
Description: Group key is affected by Generate All button in group. Steps to reproduce: 1. Insert a list 2. Add a group, select a group key, then click Generate All button. Actual result: Group key disappeared, you have to reset it.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/GroupDialog.java
}
		} );
		Button exprButton = new Button( keyArea, SWT.PUSH );
		exprButton.setText( "..." ); 
		exprButton.addSelectionListener( new SelectionAdapter( ) {
			public void widgetSelected( SelectionEvent event )
			{
				ExpressionBuilder expressionBuilder = new ExpressionBuilder( getKeyExpression( ) );
				expressionBuilder.setExpressionProvier( new ExpressionProvider( inputGroup ) );
				if ( expressionBuilder.open( ) == OK )
				{
					setKeyExpression( expressionBuilder.getResult( ).trim( ) );
				}
			}
		} );
		
		Composite intervalArea = new Composite( composite, SWT.NONE );
		intervalArea.setLayoutData( new GridData( GridData.FILL_HORIZONTAL ) );
		intervalArea.setLayout( UIUtil.createGridLayoutWithoutMargin( 2, false ) );
		Composite intervalTypeArea = new Composite( intervalArea, SWT.NONE );
		intervalTypeArea.setLayoutData( new GridData( GridData.FILL_HORIZONTAL ) );
		intervalTypeArea.setLayout( UIUtil.createGridLayoutWithoutMargin( 1,
				false ) );
		Composite intervalRangeArea = new Composite( intervalArea, SWT.NONE );
		intervalRangeArea.setLayoutData( new GridData( GridData.HORIZONTAL_ALIGN_FILL ) );
		intervalRangeArea.setLayout( UIUtil.createGridLayoutWithoutMargin( 1,
				false ) );
		
		new Label( intervalTypeArea, SWT.NONE ).setText( GROUP_DLG_GROUP_INTERVAL_LABEL );
		new Label( intervalRangeArea, SWT.NONE ).setText( GROUP_DLG_GROUP_RANGE_LABEL );