1 files changed, 48 insertions, 0 deletions
diff --git a/plugins/emf/org.eclipse.papyrus.emf.ui/api/org/eclipse/papyrus/emf/ui/validators/SingleEStructuralFeatureValidator.java b/plugins/emf/org.eclipse.papyrus.emf.ui/api/org/eclipse/papyrus/emf/ui/validators/SingleEStructuralFeatureValidator.java
new file mode 100755
index 00000000000..4fbc1496fef
--- /dev/null
+++ b/plugins/emf/org.eclipse.papyrus.emf.ui/api/org/eclipse/papyrus/emf/ui/validators/SingleEStructuralFeatureValidator.java
@@ -0,0 +1,48 @@
+/*****************************************************************************
+ * Copyright (c) 2019 CEA LIST and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ *   Vincent Lorenzo (CEA LIST) vincent.lorenzo@cea.fr - Initial API and implementation
+ *
+ *****************************************************************************/
+
+package org.eclipse.papyrus.emf.ui.validators;
+
+import org.eclipse.core.runtime.IStatus;
+import org.eclipse.emf.ecore.EStructuralFeature;
+import org.eclipse.papyrus.emf.ui.messages.Messages;
+
+/**
+ * Validator for single selection of {@link EStructuralFeature}
+ */
+public final class SingleEStructuralFeatureValidator extends AbstractSelectionStatusValidator {
+
+	/**
+	 * @see org.eclipse.ui.dialogs.ISelectionStatusValidator#validate(java.lang.Object[])
+	 *
+	 * @param selection
+	 * @return
+	 */
+	@Override
+	public IStatus validate(Object[] selection) {
+		String errorMessage = ""; //$NON-NLS-1$
+		if (selection.length == 0) {
+			errorMessage = NO_SELECTION;
+		} else {
+			final Object firstSelection = selection[0];
+			if (false == firstSelection instanceof EStructuralFeature || selection.length != 1) {
+				errorMessage = Messages.SingleEStructuralFeatureValidator_YouMustSelectOneEStructuralFeature;
+			}
+		}
+
+		return buildIStatus(errorMessage);
+	}
+
+}