1 files changed, 86 insertions, 0 deletions
diff --git a/org.eclipse.mylyn.tasks.ui/src/org/eclipse/mylyn/internal/tasks/ui/compare/TaskDataDiffNode.java b/org.eclipse.mylyn.tasks.ui/src/org/eclipse/mylyn/internal/tasks/ui/compare/TaskDataDiffNode.java
new file mode 100644
index 000000000..5d0100896
--- /dev/null
+++ b/org.eclipse.mylyn.tasks.ui/src/org/eclipse/mylyn/internal/tasks/ui/compare/TaskDataDiffNode.java
@@ -0,0 +1,86 @@
+/*******************************************************************************
+ * Copyright (c) 2011 Tasktop Technologies 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:
+ *     Tasktop Technologies - initial API and implementation
+ *******************************************************************************/
+
+package org.eclipse.mylyn.internal.tasks.ui.compare;
+
+import java.io.ByteArrayInputStream;
+import java.io.InputStream;
+
+import org.eclipse.compare.IStreamContentAccessor;
+import org.eclipse.compare.ITypedElement;
+import org.eclipse.compare.structuremergeviewer.DiffNode;
+import org.eclipse.compare.structuremergeviewer.Differencer;
+import org.eclipse.core.runtime.CoreException;
+import org.eclipse.mylyn.internal.tasks.core.data.TaskAttributeDiff;
+import org.eclipse.mylyn.internal.tasks.core.data.TaskDataDiff;
+import org.eclipse.mylyn.internal.tasks.ui.TasksUiPlugin;
+import org.eclipse.mylyn.tasks.core.ITaskComment;
+import org.eclipse.mylyn.tasks.core.data.ITaskAttributeDiff;
+import org.eclipse.mylyn.tasks.core.data.TaskData;
+import org.eclipse.swt.graphics.Image;
+
+/**
+ * A model element for comparing two {@link TaskData} objects.
+ * 
+ * @author Steffen Pingel
+ */
+public class TaskDataDiffNode extends DiffNode {
+
+	static class ByteArrayInput implements ITypedElement, IStreamContentAccessor {
+
+		String content;
+
+		private final String name;
+
+		public ByteArrayInput(String content, String name) {
+			this.content = content;
+			this.name = name;
+		}
+
+		public String getName() {
+			return name;
+		}
+
+		public Image getImage() {
+			return null;
+		}
+
+		public String getType() {
+			return ITypedElement.TEXT_TYPE;
+		}
+
+		public InputStream getContents() throws CoreException {
+			return new ByteArrayInputStream(content.getBytes());
+		}
+
+	}
+
+	public TaskDataDiffNode(int change, TaskData oldData, TaskData newData) {
+		super(change);
+		TaskDataDiff diff = new TaskDataDiff(TasksUiPlugin.getRepositoryModel(), newData, oldData);
+		for (ITaskAttributeDiff attribute : diff.getChangedAttributes()) {
+			TaskAttributeDiff attr = (TaskAttributeDiff) attribute;
+			String label = attr.getLabel();
+			if (label.endsWith(":")) { //$NON-NLS-1$
+				label = label.substring(0, label.length() - 1);
+			}
+			DiffNode node = new DiffNode(Differencer.CHANGE, this, new ByteArrayInput(attr.getOldValues().toString(),
+					null), new ByteArrayInput(attr.getNewValues().toString(), label));
+			add(node);
+		}
+		for (ITaskComment attribute : diff.getNewComments()) {
+			DiffNode node = new DiffNode(Differencer.CHANGE, this, new ByteArrayInput("", null), new ByteArrayInput( //$NON-NLS-1$
+					attribute.getText(), Messages.TaskDataDiffNode_New_Comment_Label));
+			add(node);
+		}
+	}
+
+}