Merge pull request #272 from demiurg/master

[view/graph][s]: Ability to extend graph options with general options - thx to @demiurg.

src/view.graph.js

@@ -15,9 +15,10 @@ this.recline.View = this.recline.View || {};
 //        { 
 //          group: {column name for x-axis},
 //          series: [{column name for series A}, {column name series B}, ... ],
-//          graphType: 'line'
+//          graphType: 'line',
+//          graphOptions: {custom [Flotr2 options](http://www.humblesoftware.com/flotr2/documentation#configuration)}
 //        }
-//
+// 
 // NB: should *not* provide an el argument to the view but must let the view
 // generate the element itself (you can then append view.el to the DOM.
 my.Graph = Backbone.View.extend({
@@ -247,7 +248,14 @@ my.Graph = Backbone.View.extend({
       },
       grid: { hoverable: true, clickable: true }
     };
-    return optionsPerGraphType[typeId];
+    
+    if (self.state.get('graphOptions')){
+      return _.extend(optionsPerGraphType[typeId],
+        self.state.get('graphOptions')  
+      )
+    }else{
+      return optionsPerGraphType[typeId];
+    }
   },
 
   createSeries: function() {

test/view.graph.test.js

@@ -69,3 +69,18 @@ test('GraphControls basics', function () {
   view.remove();
 });
 
+test('Overriding graph options', function () {
+  var dataset = Fixture.getDataset();
+  var randomWidth = Math.random();
+  var view = new recline.View.Graph({
+    model: dataset,
+    state: {
+      'graphType': 'bars',
+      'group': 'date',
+      'series': ['y', 'z'],
+      'graphOptions': { bars: {barWidth: randomWidth}}
+    }
+  });
+  equal(view.getGraphOptions('bars').bars.barWidth, randomWidth)
+  view.remove();
+});