From 95afdebedf23d9d21d367c66a3b93cab007ec5f9 Mon Sep 17 00:00:00 2001
From: Lily Guo
Date: Mon, 27 May 2013 15:34:58 -0700
Subject: 409758: [api] allow clients to determine the first and last activity
 dates of a task

Change-Id: I5aa8aa53d204a3c6cef2fc4cfa7d4023f72c719a
Task-Url: https://bugs.eclipse.org/bugs/show_bug.cgi?id=409758

---
 .../mylyn/internal/tasks/core/TaskActivityManager.java   | 16 ++++++++++++++++
 .../eclipse/mylyn/tasks/core/ITaskActivityManager.java   | 13 +++++++++++++
 2 files changed, 29 insertions(+)

diff --git a/org.eclipse.mylyn.tasks.core/src/org/eclipse/mylyn/internal/tasks/core/TaskActivityManager.java b/org.eclipse.mylyn.tasks.core/src/org/eclipse/mylyn/internal/tasks/core/TaskActivityManager.java
index b4c77a409..51804d8de 100644
--- a/org.eclipse.mylyn.tasks.core/src/org/eclipse/mylyn/internal/tasks/core/TaskActivityManager.java
+++ b/org.eclipse.mylyn.tasks.core/src/org/eclipse/mylyn/internal/tasks/core/TaskActivityManager.java
@@ -857,6 +857,22 @@ public class TaskActivityManager implements ITaskActivityManager {
 		return taskActivationHistory;
 	}
 
+	public Date getFirstActivity(ITask task) {
+		SortedMap<Calendar, Long> activityMap = taskElapsedTimeMap.get(task);
+		if (activityMap != null && !activityMap.isEmpty()) {
+			return activityMap.firstKey().getTime();
+		}
+		return null;
+	}
+
+	public Date getLastActivity(ITask task) {
+		SortedMap<Calendar, Long> activityMap = taskElapsedTimeMap.get(task);
+		if (activityMap != null && !activityMap.isEmpty()) {
+			return activityMap.lastKey().getTime();
+		}
+		return null;
+	}
+
 	public Set<ITask> getAllScheduledTasks() {
 		return new HashSet<ITask>(allScheduledTasks);
 	}
diff --git a/org.eclipse.mylyn.tasks.core/src/org/eclipse/mylyn/tasks/core/ITaskActivityManager.java b/org.eclipse.mylyn.tasks.core/src/org/eclipse/mylyn/tasks/core/ITaskActivityManager.java
index 02dd0cacf..d60bef7bf 100644
--- a/org.eclipse.mylyn.tasks.core/src/org/eclipse/mylyn/tasks/core/ITaskActivityManager.java
+++ b/org.eclipse.mylyn.tasks.core/src/org/eclipse/mylyn/tasks/core/ITaskActivityManager.java
@@ -12,6 +12,7 @@
 package org.eclipse.mylyn.tasks.core;
 
 import java.util.Calendar;
+import java.util.Date;
 import java.util.Set;
 
 import org.eclipse.mylyn.internal.tasks.core.AbstractTask;
@@ -68,6 +69,18 @@ public interface ITaskActivityManager {
 	 */
 	public abstract long getElapsedTime(ITask task, Calendar start, Calendar end);
 
+	/**
+	 * @return the date of the first activity of the given task
+	 * @since 3.10
+	 */
+	public abstract Date getFirstActivity(ITask task);
+
+	/**
+	 * @return the date of the last activity of the given task
+	 * @since 3.10
+	 */
+	public abstract Date getLastActivity(ITask task);
+
 	public abstract void addActivityListener(ITaskActivityListener listener);
 
 	public abstract void removeActivityListener(ITaskActivityListener listener);
-- 
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