adds further utility methods

refs 2334

org.fortiss.tooling.kernel.ui/trunk/src/org/fortiss/tooling/kernel/ui/util/ConstraintsUIUtils.java

@@ -24,10 +24,12 @@ import java.util.List;
 import java.util.function.Function;
 
 import org.eclipse.emf.ecore.EObject;
+import org.eclipse.jface.dialogs.MessageDialog;
 import org.eclipse.jface.viewers.ColumnLabelProvider;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.graphics.Color;
 import org.eclipse.swt.widgets.Display;
+import org.eclipse.swt.widgets.Shell;
 import org.fortiss.tooling.kernel.extension.data.IConstraintViolation;
 import org.fortiss.tooling.kernel.extension.data.IConstraintViolation.ESeverity;
 import org.fortiss.tooling.kernel.model.constraints.ConstrainedWithChecksum;
@@ -48,7 +50,7 @@ import org.fortiss.tooling.kernel.utils.EcoreUtils;
  * @author aravantinos
  * @author $Author$
  * @version $Rev$
- * @ConQAT.Rating YELLOW Hash: 8E535AAF5BE563F94B385D091D10B45E
+ * @ConQAT.Rating YELLOW Hash: 57BDB29B589BA33DA52FC4380EC8A7F2
  */
 public class ConstraintsUIUtils {
 
@@ -187,18 +189,29 @@ public class ConstraintsUIUtils {
 	public static void triggerMarkerRefresh(String id, IConstraintContainer cstrContainer) {
 		for(Constraint c : cstrContainer.getConstraints()) {
 			if(c.getConstraintTypeID().equals(id)) {
-				ConstraintsUIUtils.triggerMarkersRefresh(c);
+				triggerMarkersRefresh(c);
 			}
 		}
 	}
 
+	/**
+	 * @param constraints
+	 *            Calls <code>triggerMarkersRefresh</code> on every constraint of
+	 *            <code>constraints</code>.
+	 */
+	public static void triggerMarkerRefresh(List<Constraint> constraints) {
+		for(Constraint c : constraints) {
+			triggerMarkersRefresh(c);
+		}
+	}
+
 	/**
 	 * @param c
 	 * @return Standard text describing the status of <code>c</code>.
 	 */
 	public static String getText(Constraint c) {
 		if(c == null) {
-			return "";
+			return "NOT APPLICABLE";
 		}
 		String mainMsg = "ERROR";
 		IConstraintVerificationStatus status =
@@ -240,7 +253,7 @@ public class ConstraintsUIUtils {
 	public static Color getColor(Constraint c) {
 		Display display = Display.getCurrent();
 		if(c == null) {
-			return display.getSystemColor(SWT.COLOR_GRAY);
+			return display.getSystemColor(SWT.COLOR_WIDGET_BACKGROUND);
 		}
 		IConstraintVerificationStatus status =
 				IConstraintVerificationUIService.getInstance().getStatus(c);
@@ -305,4 +318,20 @@ public class ConstraintsUIUtils {
 		return IConstraintVerificationUIService.getInstance().getStatus(constraint) != null;
 	}
 
+	/**
+	 * Standard warning message to display when a resource-consuming check is activated for the
+	 * first time.
+	 */
+	public static void displayTimeConsumptionWarning(String id) {
+		Display d = Display.getCurrent();
+		d = d == null ? Display.getDefault() : d;
+		Shell shell = d.getActiveShell();
+		String title = "Background operation about to start";
+		String msg = "AutoFOCUS will now go through your project to check that ";
+		msg += IConstraintVerificationUIService.getInstance().getDescription(id) + ". ";
+		msg += "This might slow down your system.\n\n";
+		msg += "Note that this is a one-time thing: once the check is activated, ";
+		msg += "subsequent runs should be unnoticed.";
+		MessageDialog.openWarning(shell, title, msg);
+	}
 }