/*
 * Copyright (c) 2006, 2009 Borland Software Corporation
 * 
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *    Dmitry Stadnik (Borland) - initial API and implementation
 */
 
import xpt.OclMigrationProblems;

modeltype gmfgen uses "http://www.eclipse.org/gmf/2009/GenModel";

library ViewmapAttributesUtils;

helper isStoringChildPositions(layoutType : gmfgen::ViewmapLayoutType) : Boolean {
	return gmfgen::ViewmapLayoutType::XY_LAYOUT = layoutType
}

helper gmfgen::Viewmap::isFixedFont() : Boolean {
	return self.attributes[gmfgen::StyleAttributes]->exists(fixedFont)
}

helper gmfgen::Viewmap::isFixedForeground() : Boolean {
	return self.attributes[gmfgen::StyleAttributes]->exists(fixedForeground)
}

helper gmfgen::Viewmap::isFixedBackground() : Boolean {
	return self.attributes[gmfgen::StyleAttributes]->exists(fixedBackground)
}

helper gmfgen::Viewmap::canUseShapeStyle() : Boolean {
	return not (self.isFixedFont() or self.isFixedForeground() or self.isFixedBackground());
}

helper getResizeConstraints(viewmap : gmfgen::Viewmap) : gmfgen::ResizeConstraints {
	return (if null = viewmap then null else firstOrNull(viewmap.attributes[gmfgen::ResizeConstraints]) endif)
}

helper getDefaultSizeAttributes(viewmap : gmfgen::Viewmap) : gmfgen::DefaultSizeAttributes {
	return (if null = viewmap then null else firstOrNull(viewmap.attributes[gmfgen::DefaultSizeAttributes]) endif)
}

helper defaultSizeWidth(viewmap : gmfgen::Viewmap, defaultValue : Integer) : Integer {
	return let a = getDefaultSizeAttributes(viewmap) in (if null = a then defaultValue else a.width endif)
}

helper defaultSizeHeight(viewmap : gmfgen::Viewmap, defaultValue : Integer) : Integer {
	return let a = getDefaultSizeAttributes(viewmap) in (if null = a then defaultValue else a.height endif)
}

helper getLabelOffsetAttributes(viewmap : gmfgen::Viewmap) : gmfgen::LabelOffsetAttributes {
	return (if null = viewmap then null else firstOrNull(viewmap.attributes[gmfgen::LabelOffsetAttributes]) endif)
}

helper labelOffsetX(viewmap : gmfgen::Viewmap, defaultValue : Integer) : Integer {
	return let a = getLabelOffsetAttributes(viewmap) in (if null = a then defaultValue else a.x endif)
}

helper labelOffsetY(viewmap : gmfgen::Viewmap, defaultValue : Integer) : Integer {
	return let a = getLabelOffsetAttributes(viewmap) in (if null = a then defaultValue else a.y endif)
}