1 files changed, 61 insertions, 0 deletions
diff --git a/plugins/infra/gmfdiag/css/org.eclipse.papyrus.infra.gmfdiag.css.xtext/src/org/eclipse/papyrus/infra/gmfdiag/validation/CSSJavaValidator.java b/plugins/infra/gmfdiag/css/org.eclipse.papyrus.infra.gmfdiag.css.xtext/src/org/eclipse/papyrus/infra/gmfdiag/validation/CSSJavaValidator.java
index e03031f3cea..a3f23360674 100644
--- a/plugins/infra/gmfdiag/css/org.eclipse.papyrus.infra.gmfdiag.css.xtext/src/org/eclipse/papyrus/infra/gmfdiag/validation/CSSJavaValidator.java
+++ b/plugins/infra/gmfdiag/css/org.eclipse.papyrus.infra.gmfdiag.css.xtext/src/org/eclipse/papyrus/infra/gmfdiag/validation/CSSJavaValidator.java
@@ -11,10 +11,18 @@
  *****************************************************************************/
 package org.eclipse.papyrus.infra.gmfdiag.validation;
 
+
+import org.eclipse.emf.ecore.EObject;
 import org.eclipse.papyrus.infra.gmfdiag.css.Attribute;
 import org.eclipse.papyrus.infra.gmfdiag.css.CssPackage;
+import org.eclipse.papyrus.infra.gmfdiag.css.Expression;
+import org.eclipse.papyrus.infra.gmfdiag.css.Function;
 import org.eclipse.papyrus.infra.gmfdiag.css.HexColor;
+import org.eclipse.papyrus.infra.gmfdiag.css.Number;
 import org.eclipse.papyrus.infra.gmfdiag.css.SimpleSelector;
+import org.eclipse.papyrus.infra.gmfdiag.css.Subterm;
+import org.eclipse.papyrus.infra.gmfdiag.css.Term;
+import org.eclipse.papyrus.infra.gmfdiag.css.UNARY;
 import org.eclipse.xtext.validation.Check;
 
 
@@ -34,6 +42,59 @@ public class CSSJavaValidator extends AbstractCSSJavaValidator {
 		}
 	}
 
+	@Check
+	public void checkRGBColor(Function function) {
+		if("rgb".equals(function.getName().toLowerCase())) {
+			if(function.getArgs().getSubterms().size() != 2) { //3 Args: 1 Term + 2 Subterms
+				warning("Invalid color. The RGB color must have exactly 3 arguments", CssPackage.Literals.FUNCTION__ARGS);
+			}
+
+
+		}
+	}
+
+	@Check
+	public void checkRGBTerm(Term term) {
+		Expression owningExpression = findExpression(term);
+		if(owningExpression == null) {
+			return;
+		}
+
+		if(owningExpression.eContainer() instanceof Function) {
+			if("rgb".equals(((Function)owningExpression.eContainer()).getName().toLowerCase())) {
+				if(!(term instanceof Number)) {
+					warning("The RGB color arguments must be integers. Actual type: " + term.eClass().getName(), term.eClass().getEStructuralFeature("value"));
+				} else {
+					Number number = (Number)term;
+
+					boolean validValue = true;
+					try {
+						int absoluteValue = Integer.parseInt(number.getValue());
+						validValue = (number.getOp() == null || number.getOp().getOperator() == UNARY.PLUS) && absoluteValue <= 255;
+					} catch (NumberFormatException ex) {
+						validValue = false;
+					}
+
+					if(!validValue) {
+						warning("The RGB color arguments must be integers between 0 and 255", term.eClass().getEStructuralFeature("value"));
+					}
+				}
+			}
+		}
+	}
+
+	protected Expression findExpression(EObject term) {
+		if(term.eContainer() instanceof Expression) {
+			return (Expression)term.eContainer();
+		}
+
+		if(term.eContainer() instanceof Subterm) {
+			return findExpression(term.eContainer());
+		}
+
+		return null;
+	}
+
 	//////////////////////////
 	//		EMF Only		//
 	//////////////////////////