1 files changed, 74 insertions, 0 deletions
diff --git a/rba.tool.editor/src/rba/tool/editor/validation/validators/PositionContainerValidator.xtend b/rba.tool.editor/src/rba/tool/editor/validation/validators/PositionContainerValidator.xtend
new file mode 100644
index 0000000..da27f6c
--- /dev/null
+++ b/rba.tool.editor/src/rba/tool/editor/validation/validators/PositionContainerValidator.xtend
@@ -0,0 +1,74 @@
+package rba.tool.editor.validation.validators
+
+import java.util.HashSet
+import java.util.Set
+import org.eclipse.xtext.validation.Check
+import org.eclipse.xtext.validation.EValidatorRegistrar
+import rba.tool.editor.messages.Messages
+import rba.tool.editor.validation.AbstractRBAModelValidator
+import rba.view.Area
+import rba.view.Display
+import rba.view.PositionContainer
+import rba.view.RBAViewPackage
+import rba.view.Size
+import rba.view.SizeIdentifier
+import rba.view.SizeReference
+import rba.view.impl.DisplayImpl
+
+class PositionContainerValidator extends AbstractRBAModelValidator {
+
+	private String POSITION_CONTAINER_COORDINATE_CHECK = Messages.POSITION_CONTAINER_COORDINATE_CHECK;
+
+	override register(EValidatorRegistrar registrar) {
+		// not needed for classes used as ComposedCheck
+	}
+
+	@Check(NORMAL)
+	def checkPositionContainer(PositionContainer positionContainer) {
+		var display = getDisplay(positionContainer)
+		var displaySizeIden = display.size as SizeIdentifier
+		var displaySize = getSize(displaySizeIden)
+		var displayWidth = displaySize.width
+		var displayHeight = displaySize.height
+
+		var Set<Area> areaList = new HashSet
+		if (positionContainer.area !== null) {
+			areaList.add(positionContainer.area);
+		}
+		for (Area area : areaList) {
+			for (sizeIdentifier : area.size) {
+				var areaSize = getSize(sizeIdentifier)
+				var areaWidth = areaSize.width
+				var areaHeight = areaSize.height
+
+				// warning displays total of position container start point and size exceeds display's size
+				if (positionContainer.x + areaWidth > displayWidth || positionContainer.y + areaHeight > displayHeight) {
+					warning(POSITION_CONTAINER_COORDINATE_CHECK, RBAViewPackage.Literals.POSITION_CONTAINER__X)
+					return;
+				}
+			}
+
+		}
+	}
+
+//get Display from position container
+	def Display getDisplay(PositionContainer positionContainer) {
+		var parent = positionContainer.eContainer
+		while (parent !== null) {
+			if (parent instanceof DisplayImpl) {
+				return parent as Display;
+			}
+			parent = parent.eContainer
+		}
+	}
+
+	// get Size from SizeIdentifier
+	def Size getSize(SizeIdentifier size) {
+		if (size instanceof Size) {
+			return size as Size
+		} else if (size instanceof SizeReference) {
+			var sizeRef = size as SizeReference
+			return sizeRef.size as Size
+		}
+	}
+}