Merge pull request #371 from pmoradei/setgridsize_propagate

Add a parameter to setGridWidth method to allow not to propagate resi…

doc/README.md

@@ -415,11 +415,12 @@ Toggle the grid animation state.  Toggles the `grid-stack-animate` class.
 
 - `doAnimate` - if `true` the grid will animate.
 
-### setGridWidth(gridWidth)
+### setGridWidth(gridWidth, doNotPropagate)
 
 (Experimental) Modify number of columns in the grid. Will attempt to update existing widgets to conform to new number of columns. Requires `gridstack-extra.css` or `gridstack-extra.min.css`.
 
 - `gridWidth` - Integer between 1 and 12.
+- `doNotPropagate` - if true existing widgets will not be updated.
 
 ### setStatic(staticValue)
 

src/gridstack.js

@@ -1538,10 +1538,13 @@
         this.grid.commit();
     };
 
-    GridStack.prototype.setGridWidth = function(gridWidth) {
+    GridStack.prototype.setGridWidth = function(gridWidth,doNotPropagate) {
         this.container.removeClass('grid-stack-' + this.opts.width);
-        this._updateNodeWidths(this.opts.width, gridWidth);
+        if (doNotPropagate !== true) {
+            this._updateNodeWidths(this.opts.width, gridWidth);
+        }
         this.opts.width = gridWidth;
+        this.grid.width = gridWidth;
         this.container.addClass('grid-stack-' + gridWidth);
     };