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;(function(window){
if (typeof(BX.DragDrop) !== "undefined") return;
BX.DragDrop = function(params)
{
this.dragItemControlClassName = params.dragItemControlClassName || null;
this.dragNodeList = document.body.querySelectorAll('.' + params.dragItemClassName);
this.dragStartCallback = params.dragStart || null;
this.dragCallback = params.drag || null;
this.dragOverCallback = params.dragOver || null;
this.dragEnterCallback = params.dragEnter || null;
this.dragLeaveCallback = params.dragLeave || null;
this.dragDropCallback = params.dragDrop || null;
this.dragEndCallback = params.dragEnd || null;
this.dragActiveClass = params.dragActiveClass || null; /*className for node which drag*/
this.activeDragElement = null;
this.isDocDragover = false;
this.isAutoScroll = false;
this.scrollIntervalID = 0;
this.isScrollInterval = false;
this.isSortable = false;
this.isSortableActive = false;
if(typeof(params.dropZoneList) == 'string')
this.dropZoneNodeList = document.body.querySelectorAll('.' +params.dropZoneList);
else if(BX.type.isArray(params.dropZoneList))
this.dropZoneNodeList = params.dropZoneList;
else if(BX.type.isDomNode(params.dropZoneList))
this.dropZoneNodeList = [params.dropZoneList];
if(typeof params.sortable == 'object')
{
var nodes = params.sortable.className
? document.body.querySelectorAll('.' + params.sortable.className) : this.dragNodeList;
var sortableList = BX.convert.nodeListToArray(nodes);
this.sortable =
{
rootElem : params.sortable.rootElem,
gagClass : params.sortable.gagClass,
gagHtml : params.sortable.gagHtml || '',
list : sortableList,
floating : /left|right|inline/.test(BX.style(sortableList[0], 'float') + BX.style(sortableList[0], 'display')),
node : params.sortable.node || null,
isNode : false
};
if(this.sortable.node)
this.sortable.isNode = true;
this.isSortable = true;
}
this.dragEventX = 0;
this.dragEventY = 0;
this.scroll =
{
edgeBottom : 0,
edgeTop : 0,
edgeLeft : 0,
edgeRight : 0,
height : 0,
width : 0,
visibleHeight : 0,
visibleWidth : 0,
speedX : 10,
speedY : 10,
prevPosDragEvY : -1,
prevPosDragEvX : -1
};
this.isIE = (document.documentMode && document.documentMode <=9) || false;
this._bind();
};
BX.DragDrop.prototype =
{
_bind : function()
{
/*if(this.isIE)
BX.bind(document, 'selectstart', BX.proxy(this.onSelect, this));*/
if(this.dragNodeList && this.dragNodeList.length > 0)
this.bindDragItem(this.dragNodeList);
if(this.dropZoneNodeList && this.dropZoneNodeList.length > 0)
this.bindCatcher(this.dropZoneNodeList);
},
bindDragItem : function(dragList)
{
var _this = this;
var dragItemControl = null;
for(var i=dragList.length-1; i>=0; i--)
{
dragItemControl = null;
if(this.dragItemControlClassName)
{
dragItemControl = dragList[i].querySelector('.' + this.dragItemControlClassName);
dragItemControl = BX(dragItemControl);
}
if(!dragItemControl)
{
dragItemControl = dragList[i];
}
dragItemControl.draggable = true;
if(this.isIE){
BX.bind(dragItemControl, 'selectstart', function(event)
{
event = event || window.event;
BX.PreventDefault(event);
_this.onSelect(event, this);
});
}
BX.bind(dragItemControl, 'dragstart', BX.delegate(function(event)
{
event = event || window.event;
_this.ondragStart(event, this);
}, dragList[i]));
BX.bind(dragItemControl, 'drag', BX.proxy(this.ondrag, this));
BX.bind(dragItemControl, 'dragend', BX.delegate(function(event)
{
event = event || window.event;
_this.ondragEnd(event, this);
}, dragList[i]));
}
},
bindCatcher : function(catcherList)
{
var _this = this;
for(var i = catcherList.length-1; i>=0; i--)
{
BX.bind(catcherList[i], 'dragover', function(event)
{
if(_this.isAutoScroll){
event = event || window.event;
_this.dragEventX = event.clientX;
_this.dragEventY = event.clientY;
}
BX.PreventDefault(event);
event.dataTransfer.dropEffect = 'move';
_this.ondragOver(event, this);
});
BX.bind(catcherList[i], 'dragenter',function(event)
{
event = event || window.event;
BX.PreventDefault(event);
_this.ondragEnter(event, this);
});
BX.bind(catcherList[i], 'dragleave', function(event)
{
event = event || window.event;
BX.PreventDefault(event);
_this.ondragLeave(event, this);
});
BX.bind(catcherList[i], 'drop', function(event)
{
event = event || window.event;
BX.PreventDefault(event);
_this.ondragDrop(event, this);
});
}
},
addSortableItem : function(sortablItem)
{
this.sortable.list.push(sortablItem);
},
removeSortableItem : function(sortablItem)
{
for(var i = 0; i<this.sortable.list.length; i++)
{
if(this.sortable.list[i] == sortablItem)
delete this.sortable.list[i]
}
},
addDragItem : function(dragList)
{
this.bindDragItem(dragList)
},
addCatcher : function(catcherItem) /* dynamically add catcher */
{
this.dropZoneNodeList.push(catcherItem);
this.bindCatcher([catcherItem]);
},
removeCatcher : function(catcherItem)
{
for(var i = this.dropZoneNodeList.length-1; i>=0; i--)
{
if(this.dropZoneNodeList[i] == catcherItem)
delete this.dropZoneNodeList[i]
}
},
onSelect : function(event, eventObj)
{
eventObj.dragDrop();
return false;
},
ondragStart : function(event, eventObj)
{
event = event || window.event;
event.dataTransfer.setData('text', ''); /*for FF*/
event.dataTransfer.effectAllowed = 'move';
this.activeDragElement = eventObj;
if(document.body.scrollHeight > document.body.clientHeight || document.body.scrollWidth > document.body.clientWidth)
this.setAutoScroll(event.clientX, event.clientY);
if(this.dragActiveClass)
{
setTimeout(
BX.proxy(
function(){ BX.addClass(this.activeDragElement, this.dragActiveClass) },
this
),
10
)
}
var params =
{
dragElement : this.activeDragElement,
sortableElement : (this.sortable && this.sortable.node) ? this.sortable.node : null,
event : event
};
if(this.isSortable && !this.isSortableActive)
{
if(!this.sortable.isNode)
{
this.sortable.node = this.activeDragElement;
this.sortable.gagClass ? setTimeout( BX.proxy(function(){BX.addClass(this.sortable.node, this.sortable.gagClass)},this) , 50) : null;
}
this.isSortableActive = true;
this.sortableInterval = setInterval(BX.proxy(this.sortableMove, this),100);
}
if(typeof(this.dragStartCallback) == 'function')
this.dragStartCallback(params);
},
setAutoScroll : function(x,y)
{
var elemPos = BX.pos(this.activeDragElement),
bottomPos = elemPos.bottom,
topPos = elemPos.top,
leftPos = elemPos.left,
rightPos = elemPos.right,
scrollTop = document.documentElement.scrollTop || document.body.scrollTop,
scrollLeft = document.documentElement.scrollLeft || document.body.scrollLeft;
this.scroll.visibleHeight = document.body.clientHeight;
this.scroll.visibleWidth = document.body.clientWidth;
this.scroll.edgeBottom = this.scroll.visibleHeight + scrollTop - (bottomPos - y);
this.scroll.edgeTop = scrollTop + (y - topPos);
this.scroll.edgeLeft = scrollLeft + (x - leftPos);
this.scroll.edgeRight = this.scroll.visibleWidth + scrollLeft - (rightPos - x);
this.scroll.height = document.body.scrollHeight;
this.scroll.width = document.body.scrollWidth;
this.scroll.prevPosDragEvY = y;
this.scroll.prevPosDragEvX = x;
this.isAutoScroll = true;
},
sortableMove : function()
{
var elementFromPoint = document.elementFromPoint(this.dragEventX, this.dragEventY);
if(elementFromPoint === null)
{
return;
}
var target = this.sortable.node; /*element over which draggable elem*/
while(elementFromPoint !== null &&elementFromPoint != document.body)
{
for(var i = this.sortable.list.length-1; i>=0; i--)
{
if (elementFromPoint == this.sortable.list[i])
{
target = this.sortable.list[i];
break;
}
}
elementFromPoint = elementFromPoint.parentNode;
}
var back = false, /*move back*/
forward = false, /* move forward*/
nextNode = target,
prevNode = target,
nextSibling = nextElementSibling(target), /*last or not*/
self = target == this.sortable.node,
targetPos = target.getBoundingClientRect(),
sortableElemPos = this.sortable.node.getBoundingClientRect(),
range = 0,
eventPos;
while((nextNode || prevNode) && !self)
{
if(nextNode)
nextNode = nextElementSibling(nextNode);
if(prevNode)
prevNode = previousElementSibling(prevNode);
if(nextNode == this.sortable.node || prevNode == this.sortable.node)
{
back = nextNode == this.sortable.node;
forward = prevNode == this.sortable.node;
break
}
}
if(!self && forward)
{
if(this.sortable.floating)
{
range = targetPos.right - (sortableElemPos.right - sortableElemPos.left);
eventPos = this.dragEventX;
}
else
{
range = targetPos.bottom - (sortableElemPos.bottom - sortableElemPos.top);
eventPos = this.dragEventY;
}
if(nextSibling && eventPos > range)
{
this.sortable.rootElem.insertBefore(this.sortable.node, target.nextSibling);
}
else if(!nextSibling && eventPos > range)
{
this.sortable.rootElem.appendChild(this.sortable.node);
}
}
else if(!self && back)
{
if(this.sortable.floating)
{
range = targetPos.left + (sortableElemPos.right - sortableElemPos.left);
eventPos = this.dragEventX;
}
else
{
range = targetPos.top + (sortableElemPos.bottom - sortableElemPos.top);
eventPos = this.dragEventY;
}
if(nextSibling && eventPos < range)
{
this.sortable.rootElem.insertBefore(this.sortable.node, target);
}
else if(!nextSibling && eventPos < range)
{
this.sortable.rootElem.appendChild(this.sortable.node);
}
}
},
ondrag : function (event)
{
var ev = event || window.event;
var isNotEventPos = (ev.clientY === 0 || ev.clientX === 0) || false;
if(!this.isDocDragover && isNotEventPos)
{
BX.bind(document, 'dragover', BX.proxy(this._ondrag, this));
this.isDocDragover = true;
}
else if(ev.clientY > 0 || ev.clientX > 0)
{
this.dragEventX = ev.clientX;
this.dragEventY = ev.clientY;
if(!this.isScrollInterval)
{
this.scrollIntervalID = setInterval(BX.proxy(this.autoScrollScroll, this),50);
this.isScrollInterval = true;
}
}
if(typeof(this.dragCallback) == 'function')
{
setTimeout(BX.proxy(function()
{
if(isNotEventPos) /*fix for FF drag event.client */
{
ev.clientFFX = this.dragEventX;
ev.clientFFY = this.dragEventY;
}
this.dragCallback(this.activeDragElement, this.sortable ? this.sortable.node : null, ev);
}, this),0)
}
},
_ondrag : function(event)
{
this.dragEventX = event.clientX;
this.dragEventY = event.clientY;
if(!this.isScrollInterval && this.isAutoScroll)
{
this.scrollIntervalID = setInterval(BX.proxy(this.autoScrollScroll, this), 50);
this.isScrollInterval = true;
}
},
autoScrollScroll : function()
{
var scrollTop = document.documentElement.scrollTop || document.body.scrollTop;
var scrollLeft = document.documentElement.scrollLeft || document.body.scrollLeft;
var moveLeft = this.scroll.prevPosDragEvX >= this.dragEventX || false;
var moveRight = this.scroll.prevPosDragEvX <= this.dragEventX || false;
var moveTop = this.scroll.prevPosDragEvY >= this.dragEventY || false;
var moveBottom = this.scroll.prevPosDragEvY <= this.dragEventY || false;
if(scrollLeft > 0 &&
this.dragEventX <= this.scroll.edgeLeft &&
moveLeft)
{
scrollLeft -= this.scroll.speedX;
window.scrollTo(scrollLeft,scrollTop);
if(this.scroll.speedX < 100)
this.scroll.speedX += 1;
this.scroll.prevPosDragEvX = this.dragEventX;
}
else if((scrollLeft + this.scroll.visibleWidth) < this.scroll.width &&
this.dragEventX >= this.scroll.edgeRight &&
moveRight)
{
scrollLeft += this.scroll.speedX;
window.scrollTo(scrollLeft,scrollTop);
if(this.scroll.speedX < 100)
this.scroll.speedX += 1;
this.scroll.prevPosDragEvX = this.dragEventX;
}
else
{
this.scroll.speedX = 15;
}
if(scrollTop > 0 && this.dragEventY <= this.scroll.edgeTop &&
moveTop)
{
scrollTop -= this.scroll.speedY;
window.scrollTo(scrollLeft,scrollTop);
if(this.scroll.speedY < 100)
this.scroll.speedY += 1;
this.scroll.prevPosDragEvY = this.dragEventY;
}
else if((scrollTop + this.scroll.visibleHeight) < this.scroll.height &&
this.dragEventY >= this.scroll.edgeBottom &&
moveBottom)
{
scrollTop += this.scroll.speedY;
window.scrollTo(scrollLeft,scrollTop);
if(this.scroll.speedY < 100)
this.scroll.speedY += 1;
this.scroll.prevPosDragEvY = this.dragEventY;
}
else
{
this.scroll.speedY = 10;
}
},
ondragOver : function(event, eventObj)
{
if(typeof(this.dragOverCallback) == 'function')
this.dragOverCallback(eventObj, this.activeDragElement, event);
},
ondragEnter : function(event, eventObj)
{
if(typeof(this.dragEnterCallback) == 'function')
this.dragEnterCallback(eventObj, this.activeDragElement, event);
},
ondragLeave : function(event, eventObj)
{
if(typeof(this.dragLeaveCallback) == 'function')
this.dragLeaveCallback(eventObj, this.activeDragElement, event);
},
ondragDrop : function (event, catcher)
{
if(typeof(this.dragDropCallback) == 'function')
this.dragDropCallback(catcher, this.activeDragElement, event);
},
ondragEnd : function (event, eventObj)
{
clearInterval(this.scrollIntervalID);
this.isScrollInterval = false;
this.isSortableActive = false;
if(this.sortable && this.sortable.gagClass)
BX.removeClass(this.sortable.node, this.sortable.gagClass);
BX.unbind(document, 'dragover', BX.proxy(this._ondrag, this));
this.isDocDragover = false;
if(typeof(this.dragEndCallback) == 'function')
{
this.dragEndCallback(eventObj, this.sortable ? this.sortable.node : null, event);
}
if(this.dragActiveClass)
{
setTimeout(
BX.proxy(
function(){ BX.removeClass(this.activeDragElement, this.dragActiveClass) },
this
),
0
)
}
clearInterval(this.sortableInterval);
}
};
BX.DragDrop.create = function(params)
{
return new BX.DragDrop(params)
};
function nextElementSibling(elem)
{
if( document.documentElement.nextElementSibling !== undefined)
{
return elem.nextElementSibling
}
else
{
var current = elem.nextSibling;
while(current && current.nodeType != 1) {
current = current.nextSibling;
}
return current;
}
}
function previousElementSibling(elem)
{
if( document.documentElement.previousElementSibling !== undefined)
{
return elem.previousElementSibling
}
else
{
var current = elem.previousSibling;
while(current && current.nodeType != 1) {
current = current.previousSibling;
}
return current;
}
}
})(window);