added dragNodes option. Renamed dragGraph option.

docs/graph.html

@@ -857,13 +857,21 @@ var options = {
     </td>
   </tr>
     <tr>
-        <td>moveable</td>
+        <td>dragGraph</td>
         <td>Boolean</td>
         <td>true</td>
         <td>
             Toggle if the graph can be dragged. This will not affect the dragging of nodes.
         </td>
     </tr>
+    <tr>
+        <td>dragNodes</td>
+        <td>Boolean</td>
+        <td>true</td>
+        <td>
+            Toggle if the nodes can be dragged. This will not affect the dragging of the graph.
+        </td>
+    </tr>
 
   <tr>
     <td><a href="#Navigation_controls">navigation</a></td>

src/graph/Graph.js

@@ -186,7 +186,8 @@ function Graph (container, data, options) {
         background: '#FFFFC6'
       }
     },
-    moveable: true,
+    dragGraph: true,
+    dragNodes: true,
     zoomable: true,
     hover: false
   };
@@ -529,7 +530,8 @@ Graph.prototype.setOptions = function (options) {
     if (options.freezeForStabilization !== undefined)    {this.constants.freezeForStabilization = options.freezeForStabilization;}
     if (options.configurePhysics !== undefined){this.constants.configurePhysics = options.configurePhysics;}
     if (options.stabilizationIterations !== undefined)   {this.constants.stabilizationIterations = options.stabilizationIterations;}
-    if (options.moveable !== undefined)        {this.constants.moveable = options.moveable;}
+    if (options.dragGraph !== undefined)       {this.constants.dragGraph = options.dragGraph;}
+    if (options.dragNodes !== undefined)       {this.constants.dragNodes = options.dragNodes;}
     if (options.zoomable !== undefined)        {this.constants.zoomable = options.zoomable;}
     if (options.hover !== undefined)           {this.constants.hover = options.hover;}
 
@@ -956,7 +958,7 @@ Graph.prototype._handleOnDrag = function(event) {
   var me = this,
     drag = this.drag,
     selection = drag.selection;
-  if (selection && selection.length) {
+  if (selection && selection.length && this.constants.dragNodes == true) {
     // calculate delta's and new location
     var deltaX = pointer.x - drag.pointer.x,
       deltaY = pointer.y - drag.pointer.y;
@@ -981,7 +983,7 @@ Graph.prototype._handleOnDrag = function(event) {
     }
   }
   else {
-    if (this.constants.moveable == true) {
+    if (this.constants.dragGraph == true) {
       // move the graph
       var diffX = pointer.x - this.drag.pointer.x;
       var diffY = pointer.y - this.drag.pointer.y;