From 9b6590e74d1f106024612543599b31465d4fdce9 Mon Sep 17 00:00:00 2001
From: unknown <schneidersb@NB1207305.koehl.eu>
Date: Fri, 21 Aug 2015 13:30:05 +0200
Subject: [PATCH] Introduced the Graph2d group option 'excludeFromLegend'.

---
 docs/graph2d/index.html              | 6 ++++++
 lib/timeline/component/GraphGroup.js | 2 +-
 lib/timeline/component/Legend.js     | 9 ++++++---
 3 files changed, 13 insertions(+), 4 deletions(-)

diff --git a/docs/graph2d/index.html b/docs/graph2d/index.html
index d0edebd1..c1783b51 100644
--- a/docs/graph2d/index.html
+++ b/docs/graph2d/index.html
@@ -782,6 +782,12 @@ onRender: function(item, group, graph2d) {
             <td>This defines with which axis, left or right, the graph is coupled. <a href="../../examples/graph2d/05_bothAxis.html">Example 5</a> shows groups with different Y axis. If no groups are coupled
                 with an axis, it will not be shown.</td>
         </tr>
+        <tr>
+            <td class="greenField">excludeFromLegend</td>
+            <td>Boolean</td>
+            <td>false</td>
+            <td>Group option only. Excludes the the group from beeing listed in the legend.</td>
+        </tr>
     </table>
 
     <h3 id="timelineOptions">Timeline Options</h3>
diff --git a/lib/timeline/component/GraphGroup.js b/lib/timeline/component/GraphGroup.js
index 0aac3316..d9d53405 100644
--- a/lib/timeline/component/GraphGroup.js
+++ b/lib/timeline/component/GraphGroup.js
@@ -66,7 +66,7 @@ GraphGroup.prototype.setZeroPosition = function(pos) {
  */
 GraphGroup.prototype.setOptions = function(options) {
   if (options !== undefined) {
-    var fields = ['sampling','style','sort','yAxisOrientation','barChart'];
+    var fields = ['sampling','style','sort','yAxisOrientation','barChart','excludeFromLegend'];
     util.selectiveDeepExtend(fields, this.options, options);
 
     // if the group's drawPoints is a function delegate the callback to the onRender property
diff --git a/lib/timeline/component/Legend.js b/lib/timeline/component/Legend.js
index e34e9d95..cedfe9fd 100644
--- a/lib/timeline/component/Legend.js
+++ b/lib/timeline/component/Legend.js
@@ -43,10 +43,13 @@ Legend.prototype.clear = function() {
 
 Legend.prototype.addGroup = function(label, graphOptions) {
 
-  if (!this.groups.hasOwnProperty(label)) {
-    this.groups[label] = graphOptions;
+  // Include a group only if the group option 'excludeFromLegend: false' is not set.
+  if (graphOptions.options.excludeFromLegend != true) {
+    if (!this.groups.hasOwnProperty(label)) {
+      this.groups[label] = graphOptions;
+    }
+    this.amountOfGroups += 1;
   }
-  this.amountOfGroups += 1;
 };
 
 Legend.prototype.updateGroup = function(label, graphOptions) {