1 files changed, 79 insertions, 0 deletions
diff --git a/org.eclipse.mylyn.tasks.core/src/org/eclipse/mylyn/internal/tasks/core/externalization/SaxCategoryBuilder.java b/org.eclipse.mylyn.tasks.core/src/org/eclipse/mylyn/internal/tasks/core/externalization/SaxCategoryBuilder.java
new file mode 100644
index 000000000..a50278334
--- /dev/null
+++ b/org.eclipse.mylyn.tasks.core/src/org/eclipse/mylyn/internal/tasks/core/externalization/SaxCategoryBuilder.java
@@ -0,0 +1,79 @@
+/*******************************************************************************
+ * Copyright (c) 2016 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.core.externalization;
+
+import org.eclipse.core.runtime.IStatus;
+import org.eclipse.core.runtime.Status;
+import org.eclipse.mylyn.internal.tasks.core.AbstractTaskCategory;
+import org.eclipse.mylyn.internal.tasks.core.ITasksCoreConstants;
+import org.eclipse.mylyn.internal.tasks.core.ITransferList;
+import org.eclipse.mylyn.internal.tasks.core.TaskCategory;
+import org.eclipse.mylyn.internal.tasks.core.UncategorizedTaskContainer;
+import org.xml.sax.Attributes;
+
+import com.google.common.base.Strings;
+
+public class SaxCategoryBuilder extends SaxTaskListElementBuilder<AbstractTaskCategory> {
+
+	private AbstractTaskCategory category;
+
+	private final ITransferList taskList;
+
+	public SaxCategoryBuilder(ITransferList taskList) {
+		this.taskList = taskList;
+	}
+
+	@Override
+	public void beginItem(Attributes elementAttributes) {
+		try {
+			String name = elementAttributes.getValue(TaskListExternalizationConstants.KEY_NAME);
+			if (!Strings.isNullOrEmpty(name)) {
+				String handle = elementAttributes.getValue(TaskListExternalizationConstants.KEY_HANDLE);
+				if (Strings.isNullOrEmpty(handle)) {
+					handle = name;
+				}
+				category = taskList.getContainerForHandle(handle);
+				if (category == null) {
+					category = new TaskCategory(handle, name);
+				} else if (!UncategorizedTaskContainer.HANDLE.equals(handle)) {
+					addError(new Status(IStatus.WARNING, ITasksCoreConstants.ID_PLUGIN,
+							String.format("Category with handle \"%s\" already exists in task list", handle))); //$NON-NLS-1$
+				}
+			} else {
+				addError(new Status(IStatus.WARNING, ITasksCoreConstants.ID_PLUGIN,
+						"Category is missing name attribute")); //$NON-NLS-1$
+			}
+		} catch (Exception e) {
+			addError(new Status(IStatus.WARNING, ITasksCoreConstants.ID_PLUGIN,
+					String.format("Exception reading category: %s", e.getMessage()), e)); //$NON-NLS-1$
+		}
+	}
+
+	@Override
+	protected void applyAttribute(String attributeKey, String attributeValue) {
+		// do nothing categories do not have arbitrary attributes
+	}
+
+	@Override
+	public AbstractTaskCategory getItem() {
+		return category;
+	}
+
+	@Override
+	public void addToTaskList(ITransferList taskList) {
+		// don't add unmatched categories
+		if (category instanceof TaskCategory) {
+			taskList.addCategory((TaskCategory) category);
+		}
+	}
+
+}