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jquery-sortable issue demo
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<!DOCTYPE html> | |
<head> | |
<script src="http://code.jquery.com/jquery-1.11.0.js"></script> | |
<script src="jquery-sortable-v0.9.11.js"></script> | |
<style> | |
.scrollable { | |
position: absolute; | |
top:100px; | |
bottom: 0px; | |
left: 0px; | |
right: 0px; | |
overflow: hidden; | |
overflow-y: scroll; | |
} | |
.static-yellow-bar { | |
position: absolute; | |
top: 0px; | |
left: 0px; | |
right: 0px; | |
height: 100px; | |
width: 100%; | |
background-color: yellow; | |
} | |
.lavender-square { | |
margin: 20px; | |
height: 50px; | |
width: 75px; | |
background-color: lavender; | |
} | |
</style> | |
</head> | |
<body> | |
<div class="static-yellow-bar"></div> | |
<ul class="sortable scrollable"> | |
<li class="lavender-square"></li> | |
<li class="lavender-square"></li> | |
<li class="lavender-square"></li> | |
<li class="lavender-square"></li> | |
<li class="lavender-square"></li> | |
<li class="lavender-square"></li> | |
<li class="lavender-square"></li> | |
<li class="lavender-square"></li> | |
<li class="lavender-square"></li> | |
<li class="lavender-square"></li> | |
<li class="lavender-square"></li> | |
<li class="lavender-square"></li> | |
<li class="lavender-square"></li> | |
<li class="lavender-square"></li> | |
<li class="lavender-square"></li> | |
<li class="lavender-square"></li> | |
<li class="lavender-square"></li> | |
<li class="lavender-square"></li> | |
<li class="lavender-square"></li> | |
<li class="lavender-square"></li> | |
<li class="lavender-square"></li> | |
<li class="lavender-square"></li> | |
<li class="lavender-square"></li> | |
</ul> | |
<script> | |
$('.sortable').sortable(); | |
</script> | |
</body> |
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/* =================================================== | |
* jquery-sortable.js v0.9.11 | |
* http://johnny.github.com/jquery-sortable/ | |
* =================================================== | |
* Copyright (c) 2012 Jonas von Andrian | |
* All rights reserved. | |
* | |
* Redistribution and use in source and binary forms, with or without | |
* modification, are permitted provided that the following conditions are met: | |
* * Redistributions of source code must retain the above copyright | |
* notice, this list of conditions and the following disclaimer. | |
* * Redistributions in binary form must reproduce the above copyright | |
* notice, this list of conditions and the following disclaimer in the | |
* documentation and/or other materials provided with the distribution. | |
* * The name of the author may not be used to endorse or promote products | |
* derived from this software without specific prior written permission. | |
* | |
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND | |
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | |
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
* DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY | |
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | |
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND | |
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
* ========================================================== */ | |
!function ( $, window, undefined){ | |
var eventNames, | |
pluginName = 'sortable', | |
containerDefaults = { | |
// If true, items can be dragged from this container | |
drag: true, | |
// If true, items can be droped onto this container | |
drop: true, | |
// Exclude items from being draggable, if the | |
// selector matches the item | |
exclude: "", | |
// If true, search for nested containers within an item | |
nested: true, | |
// If true, the items are assumed to be arranged vertically | |
vertical: true | |
}, // end container defaults | |
groupDefaults = { | |
// This is executed after the placeholder has been moved. | |
afterMove: function ($placeholder, container) { | |
}, | |
// The exact css path between the container and its items, e.g. "> tbody" | |
containerPath: "", | |
// The css selector of the containers | |
containerSelector: "ol, ul", | |
// Distance the mouse has to travel to start dragging | |
distance: 0, | |
// The css selector of the drag handle | |
handle: "", | |
// The exact css path between the item and its subcontainers | |
itemPath: "", | |
// The css selector of the items | |
itemSelector: "li", | |
// Check if the dragged item may be inside the container. | |
// Use with care, since the search for a valid container entails a depth first search | |
// and may be quite expensive. | |
isValidTarget: function ($item, container) { | |
return true | |
}, | |
// Executed before onDrop if placeholder is detached. | |
// This happens if pullPlaceholder is set to false and the drop occurs outside a container. | |
onCancel: function ($item, container, _super) { | |
}, | |
// Executed at the beginning of a mouse move event. | |
// The Placeholder has not been moved yet. | |
onDrag: function ($item, position, _super) { | |
$item.css(position) | |
}, | |
// Called after the drag has been started, | |
// that is the mouse button is beeing held down and | |
// the mouse is moving. | |
// The container is the closest initialized container. | |
// Therefore it might not be the container, that actually contains the item. | |
onDragStart: function ($item, container, _super) { | |
$item.css({ | |
height: $item.height(), | |
width: $item.width() | |
}) | |
$item.addClass("dragged") | |
$("body").addClass("dragging") | |
}, | |
// Called when the mouse button is beeing released | |
onDrop: function ($item, container, _super) { | |
$item.removeClass("dragged").removeAttr("style") | |
$("body").removeClass("dragging") | |
}, | |
// Called on mousedown. | |
onMousedown: function($item, event, _super) { | |
event.preventDefault() | |
}, | |
// Template for the placeholder. Can be any valid jQuery input | |
// e.g. a string, a DOM element. | |
// The placeholder must have the class "placeholder" | |
placeholder: '<li class="placeholder"/>', | |
// If true, the position of the placeholder is calculated on every mousemove. | |
// If false, it is only calculated when the mouse is above a container. | |
pullPlaceholder: true, | |
// Specifies serialization of the container group. | |
// The pair $parent/$children is either container/items or item/subcontainers. | |
// Note that this default method only works, if every item only has one subcontainer | |
serialize: function ($parent, $children, parentIsContainer) { | |
var result = $.extend({}, $parent.data()) | |
if(parentIsContainer) | |
return $children | |
else if ($children[0]){ | |
result.children = $children | |
delete result.subContainer | |
} | |
delete result.sortable | |
return result | |
}, | |
// Set tolerance while dragging. Positive values decrease sensitivity, | |
// negative values increase it. | |
tolerance: 0 | |
}, // end group defaults | |
containerGroups = {}, | |
groupCounter = 0, | |
emptyBox = { | |
left: 0, | |
top: 0, | |
bottom: 0, | |
right:0 | |
} | |
eventNames = { | |
start: "touchstart.sortable mousedown.sortable", | |
drop: "touchend.sortable touchcancel.sortable mouseup.sortable", | |
drag: "touchmove.sortable mousemove.sortable", | |
scroll: "scroll.sortable" | |
} | |
/* | |
* a is Array [left, right, top, bottom] | |
* b is array [left, top] | |
*/ | |
function d(a,b) { | |
var x = Math.max(0, a[0] - b[0], b[0] - a[1]), | |
y = Math.max(0, a[2] - b[1], b[1] - a[3]) | |
return x+y; | |
} | |
function setDimensions(array, dimensions, tolerance, useOffset) { | |
var i = array.length, | |
offsetMethod = useOffset ? "offset" : "position" | |
tolerance = tolerance || 0 | |
while(i--){ | |
var el = array[i].el ? array[i].el : $(array[i]), | |
// use fitting method | |
pos = el[offsetMethod]() | |
pos.left += parseInt(el.css('margin-left'), 10) | |
pos.top += parseInt(el.css('margin-top'),10) | |
dimensions[i] = [ | |
pos.left - tolerance, | |
pos.left + el.outerWidth() + tolerance, | |
pos.top - tolerance, | |
pos.top + el.outerHeight() + tolerance | |
] | |
} | |
} | |
function getRelativePosition(pointer, element) { | |
var offset = element.offset() | |
return { | |
left: pointer.left - offset.left, | |
top: pointer.top - offset.top | |
} | |
} | |
function sortByDistanceDesc(dimensions, pointer, lastPointer) { | |
pointer = [pointer.left, pointer.top] | |
lastPointer = lastPointer && [lastPointer.left, lastPointer.top] | |
var dim, | |
i = dimensions.length, | |
distances = [] | |
while(i--){ | |
dim = dimensions[i] | |
distances[i] = [i,d(dim,pointer), lastPointer && d(dim, lastPointer)] | |
} | |
distances = distances.sort(function (a,b) { | |
return b[1] - a[1] || b[2] - a[2] || b[0] - a[0] | |
}) | |
// last entry is the closest | |
return distances | |
} | |
function ContainerGroup(options) { | |
this.options = $.extend({}, groupDefaults, options) | |
this.containers = [] | |
this.scrollProxy = $.proxy(this.scroll, this) | |
this.dragProxy = $.proxy(this.drag, this) | |
this.dropProxy = $.proxy(this.drop, this) | |
if(!this.options.parentContainer){ | |
this.placeholder = $(this.options.placeholder) | |
if(!options.isValidTarget) | |
this.options.isValidTarget = undefined | |
} | |
} | |
ContainerGroup.get = function (options) { | |
if( !containerGroups[options.group]) { | |
if(!options.group) | |
options.group = groupCounter ++ | |
containerGroups[options.group] = new ContainerGroup(options) | |
} | |
return containerGroups[options.group] | |
} | |
ContainerGroup.prototype = { | |
dragInit: function (e, itemContainer) { | |
this.$document = $(itemContainer.el[0].ownerDocument) | |
if(itemContainer.enabled()){ | |
this.toggleListeners('on') | |
// get item to drag | |
this.item = $(e.target).closest(this.options.itemSelector) | |
this.itemContainer = itemContainer | |
this.setPointer(e) | |
this.options.onMousedown(this.item, e, groupDefaults.onMousedown) | |
} else { | |
this.toggleListeners('on', ['drop']) | |
} | |
this.dragInitDone = true | |
}, | |
drag: function (e) { | |
if(!this.dragging){ | |
if(!this.distanceMet(e)) | |
return | |
this.options.onDragStart(this.item, this.itemContainer, groupDefaults.onDragStart) | |
this.item.before(this.placeholder) | |
this.dragging = true | |
} | |
this.setPointer(e) | |
// place item under the cursor | |
this.options.onDrag(this.item, | |
getRelativePosition(this.pointer, this.item.offsetParent()), | |
groupDefaults.onDrag) | |
var x = e.pageX, | |
y = e.pageY, | |
box = this.sameResultBox, | |
t = this.options.tolerance | |
if(!box || box.top - t > y || box.bottom + t < y || box.left - t > x || box.right + t < x) | |
if(!this.searchValidTarget()) | |
this.placeholder.detach() | |
}, | |
drop: function (e) { | |
this.toggleListeners('off') | |
this.dragInitDone = false | |
if(this.dragging){ | |
// processing Drop, check if placeholder is detached | |
if(this.placeholder.closest("html")[0]) | |
this.placeholder.before(this.item).detach() | |
else | |
this.options.onCancel(this.item, this.itemContainer, groupDefaults.onCancel) | |
this.options.onDrop(this.item, this.getContainer(this.item), groupDefaults.onDrop) | |
// cleanup | |
this.clearDimensions() | |
this.clearOffsetParent() | |
this.lastAppendedItem = this.sameResultBox = undefined | |
this.dragging = false | |
} | |
}, | |
searchValidTarget: function (pointer, lastPointer) { | |
if(!pointer){ | |
pointer = this.relativePointer || this.pointer | |
lastPointer = this.lastRelativePointer || this.lastPointer | |
} | |
var distances = sortByDistanceDesc(this.getContainerDimensions(), | |
pointer, | |
lastPointer), | |
i = distances.length | |
while(i--){ | |
var index = distances[i][0], | |
distance = distances[i][1] | |
if(!distance || this.options.pullPlaceholder){ | |
var container = this.containers[index] | |
if(!container.disabled){ | |
if(!this.$getOffsetParent()){ | |
var offsetParent = container.getItemOffsetParent() | |
pointer = getRelativePosition(pointer, offsetParent) | |
lastPointer = getRelativePosition(lastPointer, offsetParent) | |
} | |
if(container.searchValidTarget(pointer, lastPointer)) | |
return true | |
} | |
} | |
} | |
if(this.sameResultBox) | |
this.sameResultBox = undefined | |
}, | |
movePlaceholder: function (container, item, method, sameResultBox) { | |
var lastAppendedItem = this.lastAppendedItem | |
if(!sameResultBox && lastAppendedItem && lastAppendedItem[0] === item[0]) | |
return; | |
item[method](this.placeholder) | |
this.lastAppendedItem = item | |
this.sameResultBox = sameResultBox | |
this.options.afterMove(this.placeholder, container) | |
}, | |
getContainerDimensions: function () { | |
if(!this.containerDimensions) | |
setDimensions(this.containers, this.containerDimensions = [], this.options.tolerance, !this.$getOffsetParent()) | |
return this.containerDimensions | |
}, | |
getContainer: function (element) { | |
return element.closest(this.options.containerSelector).data(pluginName) | |
}, | |
$getOffsetParent: function () { | |
if(this.offsetParent === undefined){ | |
var i = this.containers.length - 1, | |
offsetParent = this.containers[i].getItemOffsetParent() | |
if(!this.options.parentContainer){ | |
while(i--){ | |
if(offsetParent[0] != this.containers[i].getItemOffsetParent()[0]){ | |
// If every container has the same offset parent, | |
// use position() which is relative to this parent, | |
// otherwise use offset() | |
// compare #setDimensions | |
offsetParent = false | |
break; | |
} | |
} | |
} | |
this.offsetParent = offsetParent | |
} | |
return this.offsetParent | |
}, | |
setPointer: function (e) { | |
var pointer = { | |
left: e.pageX, | |
top: e.pageY | |
} | |
if(this.$getOffsetParent()){ | |
var relativePointer = getRelativePosition(pointer, this.$getOffsetParent()) | |
this.lastRelativePointer = this.relativePointer | |
this.relativePointer = relativePointer | |
} | |
this.lastPointer = this.pointer | |
this.pointer = pointer | |
}, | |
distanceMet: function (e) { | |
return (Math.max( | |
Math.abs(this.pointer.left - e.pageX), | |
Math.abs(this.pointer.top - e.pageY) | |
) >= this.options.distance) | |
}, | |
scroll: function (e) { | |
this.clearDimensions() | |
this.clearOffsetParent() | |
}, | |
toggleListeners: function (method, events) { | |
var that = this | |
events = events || ['drag','drop','scroll'] | |
$.each(events,function (i,event) { | |
that.$document[method](eventNames[event], that[event + 'Proxy']) | |
}) | |
}, | |
clearOffsetParent: function () { | |
this.offsetParent = undefined | |
}, | |
// Recursively clear container and item dimensions | |
clearDimensions: function () { | |
this.containerDimensions = undefined | |
var i = this.containers.length | |
while(i--){ | |
this.containers[i].clearDimensions() | |
} | |
} | |
} | |
function Container(element, options) { | |
this.el = element | |
this.options = $.extend( {}, containerDefaults, options) | |
this.group = ContainerGroup.get(this.options) | |
this.rootGroup = this.options.rootGroup = this.options.rootGroup || this.group | |
this.parentContainer = this.options.parentContainer | |
this.handle = this.rootGroup.options.handle || this.rootGroup.options.itemSelector | |
this.el.on(eventNames.start, this.handle, $.proxy(this.dragInit, this)) | |
if(this.options.drop) | |
this.group.containers.push(this) | |
} | |
Container.prototype = { | |
dragInit: function (e) { | |
var rootGroup = this.rootGroup | |
if( !rootGroup.dragInitDone && | |
e.which === 1 && | |
this.options.drag && | |
!$(e.target).is(this.options.exclude)) | |
rootGroup.dragInit(e, this) | |
}, | |
searchValidTarget: function (pointer, lastPointer) { | |
var distances = sortByDistanceDesc(this.getItemDimensions(), | |
pointer, | |
lastPointer), | |
i = distances.length, | |
rootGroup = this.rootGroup, | |
validTarget = !rootGroup.options.isValidTarget || | |
rootGroup.options.isValidTarget(rootGroup.item, this) | |
if(!i && validTarget){ | |
rootGroup.movePlaceholder(this, this.el, "append") | |
return true | |
} else | |
while(i--){ | |
var index = distances[i][0], | |
distance = distances[i][1] | |
if(!distance && this.hasChildGroup(index)){ | |
var found = this.getContainerGroup(index).searchValidTarget(pointer, lastPointer) | |
if(found) | |
return true | |
} | |
else if(validTarget){ | |
this.movePlaceholder(index, pointer) | |
return true | |
} | |
} | |
}, | |
movePlaceholder: function (index, pointer) { | |
var item = $(this.items[index]), | |
dim = this.itemDimensions[index], | |
method = "after", | |
width = item.outerWidth(), | |
height = item.outerHeight(), | |
offset = item.offset(), | |
sameResultBox = { | |
left: offset.left, | |
right: offset.left + width, | |
top: offset.top, | |
bottom: offset.top + height | |
} | |
if(this.options.vertical){ | |
var yCenter = (dim[2] + dim[3]) / 2, | |
inUpperHalf = pointer.top <= yCenter | |
if(inUpperHalf){ | |
method = "before" | |
sameResultBox.bottom -= height / 2 | |
} else | |
sameResultBox.top += height / 2 | |
} else { | |
var xCenter = (dim[0] + dim[1]) / 2, | |
inLeftHalf = pointer.left <= xCenter | |
if(inLeftHalf){ | |
method = "before" | |
sameResultBox.right -= width / 2 | |
} else | |
sameResultBox.left += width / 2 | |
} | |
if(this.hasChildGroup(index)) | |
sameResultBox = emptyBox | |
this.rootGroup.movePlaceholder(this, item, method, sameResultBox) | |
}, | |
getItemDimensions: function () { | |
if(!this.itemDimensions){ | |
this.items = this.$getChildren(this.el, "item").filter(":not(.placeholder, .dragged)").get() | |
setDimensions(this.items, this.itemDimensions = [], this.options.tolerance) | |
} | |
return this.itemDimensions | |
}, | |
getItemOffsetParent: function () { | |
var offsetParent, | |
el = this.el | |
// Since el might be empty we have to check el itself and | |
// can not do something like el.children().first().offsetParent() | |
if(el.css("position") === "relative" || el.css("position") === "absolute" || el.css("position") === "fixed") | |
offsetParent = el | |
else | |
offsetParent = el.offsetParent() | |
return offsetParent | |
}, | |
hasChildGroup: function (index) { | |
return this.options.nested && this.getContainerGroup(index) | |
}, | |
getContainerGroup: function (index) { | |
var childGroup = $.data(this.items[index], "subContainer") | |
if( childGroup === undefined){ | |
var childContainers = this.$getChildren(this.items[index], "container") | |
childGroup = false | |
if(childContainers[0]){ | |
var options = $.extend({}, this.options, { | |
parentContainer: this, | |
group: groupCounter ++ | |
}) | |
childGroup = childContainers[pluginName](options).data(pluginName).group | |
} | |
$.data(this.items[index], "subContainer", childGroup) | |
} | |
return childGroup | |
}, | |
enabled: function () { | |
return !this.disabled && (!this.parentContainer || this.parentContainer.enabled()) | |
}, | |
$getChildren: function (parent, type) { | |
var options = this.rootGroup.options, | |
path = options[type + "Path"], | |
selector = options[type + "Selector"] | |
parent = $(parent) | |
if(path) | |
parent = parent.find(path) | |
return parent.children(selector) | |
}, | |
_serialize: function (parent, isContainer) { | |
var that = this, | |
childType = isContainer ? "item" : "container", | |
children = this.$getChildren(parent, childType).not(this.options.exclude).map(function () { | |
return that._serialize($(this), !isContainer) | |
}).get() | |
return this.rootGroup.options.serialize(parent, children, isContainer) | |
}, | |
clearDimensions: function () { | |
this.itemDimensions = undefined | |
if(this.items && this.items[0]){ | |
var i = this.items.length | |
while(i--){ | |
var group = $.data(this.items[i], "subContainer") | |
if(group) | |
group.clearDimensions() | |
} | |
} | |
} | |
} | |
var API = { | |
enable: function (ignoreChildren) { | |
this.disabled = false | |
}, | |
disable: function (ignoreChildren) { | |
this.disabled = true | |
}, | |
serialize: function () { | |
return this._serialize(this.el, true) | |
} | |
} | |
$.extend(Container.prototype, API) | |
/** | |
* jQuery API | |
* | |
* Parameters are | |
* either options on init | |
* or a method name followed by arguments to pass to the method | |
*/ | |
$.fn[pluginName] = function(methodOrOptions) { | |
var args = Array.prototype.slice.call(arguments, 1) | |
return this.map(function(){ | |
var $t = $(this), | |
object = $t.data(pluginName) | |
if(object && API[methodOrOptions]) | |
return API[methodOrOptions].apply(object, args) || this | |
else if(!object && (methodOrOptions === undefined || | |
typeof methodOrOptions === "object")) | |
$t.data(pluginName, new Container($t, methodOrOptions)) | |
return this | |
}); | |
}; | |
}(jQuery, window) | |
; |
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