Fixing issue with onStop being called when not dragging

Author: mzabriskie

lib/draggable.js

@@ -154,6 +154,7 @@ module.exports = React.createClass({
 
 	getInitialState: function () {
 		return {
+			dragging: false,
 			startX: 0, startY: 0,
 			offsetX: 0, offsetY: 0,
 			clientX: 0, clientY: 0
@@ -175,6 +176,7 @@ module.exports = React.createClass({
 		}
 
 		this.setState({
+			dragging: true,
 			offsetX: e.clientX,
 			offsetY: e.clientY,
 			startX: parseInt(node.style.left, 10) || 0,
@@ -187,6 +189,14 @@ module.exports = React.createClass({
 	},
 
 	handleMouseUp: function (e) {
+		if (!this.state.dragging) {
+			return;
+		}
+
+		this.setState({
+			dragging: false
+		});
+
 		this.props.onStop(e, createUIEvent(this));
 
 		window.removeEventListener('mousemove', this.handleMouseMove);