Bug 203974 [Markers] [Markers] markers view: Twistis on configure filter dialog not correctly laid out
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/provisional/views/markers/FiltersConfigurationDialog.java
form.setBackground(parent.getBackground());
		GridData data = new GridData(SWT.FILL, SWT.FILL, true, true);
		form.setLayoutData(data);
		form.getBody().setLayout(new GridLayout());
		
		filterAreas = contentGenerator.createFilterConfigurationFields();
		boolean expand = filterAreas.size() < 3;
		createFieldArea(toolkit, form, scopeArea, expand);
		Iterator areas = filterAreas.iterator();
		while (areas.hasNext()) {
			createFieldArea(toolkit, form, (FilterConfigurationArea) areas
					.next(), expand);
		}
		if (filterGroups.isEmpty())
			setFieldsVisible(false);
		else
			filtersList.setSelection(new StructuredSelection(filterGroups
					.iterator().next()));
		return top;
	}
	/**
	 * Set the visibility of the fields to visible.
	 */
	private void setFieldsVisible(boolean visible) {
		Control[] children = form.getChildren();
		for (int i = 0; i < children.length; i++) {
			children[i].setVisible(visible);
		}
	}
	/**