examples/org.eclipse.epsilon.examples.picto.xtext.domainmodel.picto/entity2graphviz.egl

digraph G {
	graph[splines=ortho]
	node[fontname=Arial, fontsize=10, shape=record]
	edge[fontname=Arial, fontsize=10]

[%var entities = getVisibleEntities();%]

[%for (e in entities){%]
	[%=e.getNodeName()%][shape=none, margin=0, label=<[%=e.getLabel()%]>]
[%}%]

[%for (f in e.features.flatten().select(f|f.type.isTypeOf(Entity) and f.type <> e)){%]
	[%=f.eContainer.getNodeName()%]->[%=f.type.getNodeName()%][arrowhead=[%=f.getArrow()%],arrowtail=none,tooltip="[%=f.name%]"];
[%}%]

[%if (e.superType.isDefined()){%]
	[%=e.superType.getNodeName()%]->[%=e.getNodeName()%][arrowhead=none,arrowtail=empty,dir=back];
[%}%]

[%for (s in Entity.all.select(en|en.superType = e)){%]
	[%=e.getNodeName()%]->[%=s.getNodeName()%][arrowhead=none,arrowtail=empty,dir=back];
[%}%]

}

[%
operation Entity getLabel() {
	
	var onClick = "top.showView(['Model','" + self.name + "'])";
	
	if (self == e) {
		onClick = "top.showElement('" + self.id + "', '" + self.eResource.uri + "')";
	}
	
	var label = "<table cellspacing='0' cellborder='0' cellpadding='1' bgcolor='" + self.getColour() + "'>";
	label += "<tr><td sides='B' colspan='2' border='1' cellpadding='0'>" + 
		"<table border='0' cellspacing='0' cellborder='0'>" + 
		"<tr><td align='right' valign='middle'><img src='" + self.getIcon()+ "'></img></td>" + 
		"<td align='left' valign='middle' href=\"javascript:" + onClick + "\" tooltip='Go'>" + self.name + " </td></tr></table></td></tr>";
	
	label += "<tr><td></td><td></td></tr>";
	
	for (f in self.features.sortBy(a|a.name.toLowerCase())) {
		label += "<tr>";
		label += "<td><img src='" + f.getIcon() + "'></img></td><td align='left'>" + f.getLabel() + "</td>";
		label += "</tr>";
	}
	
	
	if (self.features.isEmpty()){
		label += "<tr>";
		label += "<td> </td><td> </td>";
		label += "</tr>";
	}
	
	label += "</table>";
	return label;
}

operation Entity getIcon() {
	return getImage("icons/entity.gif");
}

operation Feature getLabel() {
	return self.name + " : " + self.type?.name + (self.many ? "["+"*"+"]" : "") ;
}

operation Feature getIcon() {
	return getImage("icons/attribute.gif");
}

operation Entity getNodeName() {
	return "_Entity" + Entity.all.indexOf(self);
}

operation Feature getArrow() {
	if (self.many) {
		return "crow";
	}
	else {
		return "open";
	}
}

operation getVisibleEntities() {	
	var visibleEntities : Set;
	visibleEntities.add(e);
	visibleEntities.addAll(e.features.select(f|f.type.isTypeOf(Entity)).collect(f|f.type));
	if (e.superType.isDefined()) visibleEntities.add(e.superType);
	visibleEntities.addAll(Entity.all.select(en|en.superType = e));
	return visibleEntities;
}

operation Entity getColour() {
	if (self == e) return "#fff2d2";
	else return "#fffcdc";
}
%]