Implementation of contextual tooltips

1) add tooltips for CHANGE, ADD, DELETE, MOVE actions
2) add adapter for semantic object to compute labels
3) add unit tests

Change-Id: I808c8931e79fc4e10ea0778272b8478e6b1340e0
Signed-off-by: Mathieu Cartaud <mathieu.cartaud@obeo.fr>

1 files changed, 94 insertions, 0 deletions

diff --git a/plugins/org.eclipse.emf.compare.ide.ui/src/org/eclipse/emf/compare/ide/ui/internal/structuremergeviewer/actions/TooltipFactory.java b/plugins/org.eclipse.emf.compare.ide.ui/src/org/eclipse/emf/compare/ide/ui/internal/structuremergeviewer/actions/TooltipFactory.java
new file mode 100644
index 000000000..6d0f719a6
--- /dev/null
+++ b/plugins/org.eclipse.emf.compare.ide.ui/src/org/eclipse/emf/compare/ide/ui/internal/structuremergeviewer/actions/TooltipFactory.java
@@ -0,0 +1,94 @@
+/*******************************************************************************
+ * Copyright (c) 2015 Obeo and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ * 
+ * Contributors:
+ *     Obeo - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.emf.compare.ide.ui.internal.structuremergeviewer.actions;
+
+import org.eclipse.emf.common.notify.AdapterFactory;
+import org.eclipse.emf.compare.Diff;
+
+/**
+ * Factory for the tooltip managers.
+ *
+ * @author <a href="mailto:mathieu.cartaud@obeo.fr">Mathieu Cartaud</a>
+ */
+public final class TooltipFactory {
+
+	/**
+	 * The AddTooltipManager instance.
+	 */
+	private static AddTooltipManager addTooltipManager;
+
+	/**
+	 * The ChangeTooltipManager instance.
+	 */
+	private static ChangeTooltipManager changeTooltipManager;
+
+	/**
+	 * The DeleteTooltipManager instance.
+	 */
+	private static DeleteTooltipManager deleteTooltipManager;
+
+	/**
+	 * The MoveTooltipManager instance.
+	 */
+	private static MoveTooltipManager moveTooltipManager;
+
+	/**
+	 * The constructor.
+	 */
+	private TooltipFactory() {
+		// Prevent instanciation.
+	}
+
+	/**
+	 * Create a new instance of the right type or return the existing one for the given diff.
+	 * 
+	 * @param adapterFactory
+	 *            The given adapter factory
+	 * @param diff
+	 *            The diff which which the tooltip will be computed
+	 * @return an instance of the good AbstractTooltipManager
+	 */
+	public static AbstractTooltipManager getTooltipManager(AdapterFactory adapterFactory, Diff diff) {
+		AbstractTooltipManager manager = null;
+
+		switch (diff.getKind()) {
+			case ADD:
+				if (addTooltipManager == null) {
+					addTooltipManager = new AddTooltipManager(adapterFactory);
+				}
+				manager = addTooltipManager;
+				break;
+			case CHANGE:
+				if (changeTooltipManager == null) {
+					changeTooltipManager = new ChangeTooltipManager(adapterFactory);
+				}
+				manager = changeTooltipManager;
+				break;
+			case DELETE:
+				if (deleteTooltipManager == null) {
+					deleteTooltipManager = new DeleteTooltipManager(adapterFactory);
+				}
+				manager = deleteTooltipManager;
+				break;
+			case MOVE:
+				if (moveTooltipManager == null) {
+					moveTooltipManager = new MoveTooltipManager(adapterFactory);
+				}
+				manager = moveTooltipManager;
+				break;
+			default:
+				// Do nothing
+		}
+
+		return manager;
+	}
+
+}