Add a API to set minWidth and minHeight to a node

Author: cvillemure

README.md

@@ -36,6 +36,8 @@ Inspired by [gridster.js](http://gridster.net). Built with love.
     - [get_cell_from_pixel(position)](#get_cell_from_pixelposition)
     - [is_area_empty(x, y, width, height)](#is_area_emptyx-y-width-height)
     - [locked(el, val)](#lockedel-val)
+    - [min_width(el, val)](#min_widthel-val)
+    - [min_height(el, val)](#min_heightel-val)
     - [remove_widget(el, detach_node)](#remove_widgetel-detach_node)
     - [remove_all()](#remove_all)
     - [resize(el, width, height)](#resizeel-width-height)
@@ -292,6 +294,20 @@ Locks/unlocks widget.
 - `el` - widget to modify.
 - `val` - if `true` widget will be locked. 
 
+### min_width(el, val)
+
+Set the minWidth for a widget.
+
+- `el` - widget to modify.
+- `val` - A numeric value of the number of columns
+
+### min_height(el, val)
+
+Set the minHeight for a widget.
+
+- `el` - widget to modify.
+- `val` - A numeric value of the number of rows
+
 ### remove_widget(el, detach_node)
 
 Removes widget from the grid.

src/gridstack.js

@@ -797,6 +797,40 @@
         return this;
     };
 
+	GridStack.prototype.min_height = function (el, val) {
+		el = $(el);
+		el.each(function (index, el) {
+			el = $(el);
+			var node = el.data('_gridstack_node');
+			if (typeof node == 'undefined' || node == null) {
+				return;
+			}
+
+			if(!isNaN(val)){
+				node.min_height = (val || false);
+				el.attr('data-gs-min-height', val);
+			}
+		});
+		return this;
+	};
+
+	GridStack.prototype.min_width = function (el, val) {
+		el = $(el);
+		el.each(function (index, el) {
+			el = $(el);
+			var node = el.data('_gridstack_node');
+			if (typeof node == 'undefined' || node == null) {
+				return;
+			}
+
+			if(!isNaN(val)){
+				node.min_width = (val || false);
+				el.attr('data-gs-min-width', val);
+			}
+		});
+		return this;
+	};
+
     GridStack.prototype._update_element = function(el, callback) {
         el = $(el).first();
         var node = el.data('_gridstack_node');