Check out this jsfiddle where I used an angularjs directive to enable drag-and-drop functionality for a white square.
In another version of the fiddle, I added a green square and duplicated the directive. However, the squares do not drag and drop as expected in this second jsfiddle. Can you help identify the issue in the code? View Fiddle 2
The changes I made were in the HTML section:
<div class="shapeX" ng-draggableX='dragOptions'></div>
In the CSS part:
.shapeX
{
position: absolute;
width : 40px;
height: 40px;
background-color: green;
}
And in the JavaScript section (where I duplicated the original directive and made necessary modifications):
.directive('ngDraggableX', function($document) {
return {
restrict: 'A',
scope: {
dragOptions: '=ngDraggable'
},
link: function(scope, elem, attr) {
var startX, startY, x = 0, y = 0,
start, stop, drag, container;
var width = elem[0].offsetWidth,
height = elem[0].offsetHeight;
// Obtain drag options
if (scope.dragOptions) {
start = scope.dragOptions.start;
drag = scope.dragOptions.drag;
stop = scope.dragOptions.stop;
var id = scope.dragOptions.container;
if (id) {
container = document.getElementById(id).getBoundingClientRect();
}
}
// Bind mousedown event
elem.on('mousedown', function(e) {
e.preventDefault();
startX = e.clientX - elem[0].offsetLeft;
startY = e.clientY - elem[0].offsetTop;
$document.on('mousemove', mousemove);
$document.on('mouseup', mouseup);
if (start) start(e);
});
// Handle drag event
function mousemove(e) {
y = e.clientY - startY;
x = e.clientX - startX;
setPosition();
if (drag) drag(e);
}
// Unbind drag events
function mouseup(e) {
$document.unbind('mousemove', mousemove);
$document.unbind('mouseup', mouseup);
if (stop) stop(e);
}
// Move element, within container if provided
function setPosition() {
if (container) {
if (x < container.left) {
x = container.left;
} else if (x > container.right - width) {
x = container.right - width;
}
if (y < container.top) {
y = container.top;
} else if (y > container.bottom - height) {
y = container.bottom - height;
}
}
elem.css({
top: y + 'px',
left: x + 'px'
});
}
}
}
})