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/*
* jQuery UI Nested Sortable
* v 2.1a / 2016-02-04
* https://github.com/ilikenwf/nestedSortable
*
* Depends on:
* jquery.ui.sortable.js 1.10+
*
* 2022-01-27 Added 267-272 lines for WordPress v5.9 + jQuery UI v1.13 compatibility.
*
* Copyright (c) 2010-2016 Manuele J Sarfatti and contributors
* Licensed under the MIT License
* http://www.opensource.org/licenses/mit-license.php
*/
(function( factory ) {
"use strict";
if ( typeof define === "function" && define.amd ) {
// AMD. Register as an anonymous module.
define([
"jquery",
"jquery-ui/ui/sortable"
], factory );
} else {
// Browser globals
factory( window.jQuery );
}
}(function($) {
"use strict";
function isOverAxis( x, reference, size ) {
return ( x > reference ) && ( x < ( reference + size ) );
}
$.widget("mjs.nestedSortable", $.extend({}, $.ui.sortable.prototype, {
options: {
disableParentChange: false,
doNotClear: false,
expandOnHover: 700,
isAllowed: function() { return true; },
isTree: false,
listType: "ol",
maxLevels: 0,
protectRoot: false,
rootID: null,
rtl: false,
startCollapsed: false,
tabSize: 20,
branchClass: "mjs-nestedSortable-branch",
collapsedClass: "mjs-nestedSortable-collapsed",
disableNestingClass: "mjs-nestedSortable-no-nesting",
errorClass: "mjs-nestedSortable-error",
expandedClass: "mjs-nestedSortable-expanded",
hoveringClass: "mjs-nestedSortable-hovering",
leafClass: "mjs-nestedSortable-leaf",
disabledClass: "mjs-nestedSortable-disabled"
},
_create: function() {
var self = this,
err;
this.element.data("ui-sortable", this.element.data("mjs-nestedSortable"));
// mjs - prevent browser from freezing if the HTML is not correct
if (!this.element.is(this.options.listType)) {
err = "nestedSortable: " +
"Please check that the listType option is set to your actual list type";
throw new Error(err);
}
// if we have a tree with expanding/collapsing functionality,
// force 'intersect' tolerance method
if (this.options.isTree && this.options.expandOnHover) {
this.options.tolerance = "intersect";
}
$.ui.sortable.prototype._create.apply(this, arguments);
// prepare the tree by applying the right classes
// (the CSS is responsible for actual hide/show functionality)
if (this.options.isTree) {
$(this.items).each(function() {
var $li = this.item,
hasCollapsedClass = $li.hasClass(self.options.collapsedClass),
hasExpandedClass = $li.hasClass(self.options.expandedClass);
if ($li.children(self.options.listType).length) {
$li.addClass(self.options.branchClass);
// expand/collapse class only if they have children
if ( !hasCollapsedClass && !hasExpandedClass ) {
if (self.options.startCollapsed) {
$li.addClass(self.options.collapsedClass);
} else {
$li.addClass(self.options.expandedClass);
}
}
} else {
$li.addClass(self.options.leafClass);
}
});
}
},
_destroy: function() {
this.element
.removeData("mjs-nestedSortable")
.removeData("ui-sortable");
return $.ui.sortable.prototype._destroy.apply(this, arguments);
},
_mouseDrag: function(event) {
var i,
item,
itemElement,
intersection,
self = this,
o = this.options,
scrolled = false,
$document = $(document),
previousTopOffset,
parentItem,
level,
childLevels,
itemAfter,
itemBefore,
newList,
method,
a,
previousItem,
nextItem,
helperIsNotSibling;
//Compute the helpers position
this.position = this._generatePosition(event);
this.positionAbs = this._convertPositionTo("absolute");
if (!this.lastPositionAbs) {
this.lastPositionAbs = this.positionAbs;
}
//Do scrolling
if (this.options.scroll) {
if (this.scrollParent[0] !== document && this.scrollParent[0].tagName !== "HTML") {
if (
(
this.overflowOffset.top +
this.scrollParent[0].offsetHeight
) -
event.pageY <
o.scrollSensitivity
) {
scrolled = this.scrollParent.scrollTop() + o.scrollSpeed;
this.scrollParent.scrollTop(scrolled);
} else if (
event.pageY -
this.overflowOffset.top <
o.scrollSensitivity
) {
scrolled = this.scrollParent.scrollTop() - o.scrollSpeed;
this.scrollParent.scrollTop(scrolled);
}
if (
(
this.overflowOffset.left +
this.scrollParent[0].offsetWidth
) -
event.pageX <
o.scrollSensitivity
) {
scrolled = this.scrollParent.scrollLeft() + o.scrollSpeed;
this.scrollParent.scrollLeft(scrolled);
} else if (
event.pageX -
this.overflowOffset.left <
o.scrollSensitivity
) {
scrolled = this.scrollParent.scrollLeft() - o.scrollSpeed;
this.scrollParent.scrollLeft(scrolled);
}
} else {
if (
event.pageY -
$document.scrollTop() <
o.scrollSensitivity
) {
scrolled = $document.scrollTop() - o.scrollSpeed;
$document.scrollTop(scrolled);
} else if (
$(window).height() -
(
event.pageY -
$document.scrollTop()
) <
o.scrollSensitivity
) {
scrolled = $document.scrollTop() + o.scrollSpeed;
$document.scrollTop(scrolled);
}
if (
event.pageX -
$document.scrollLeft() <
o.scrollSensitivity
) {
scrolled = $document.scrollLeft() - o.scrollSpeed;
$document.scrollLeft(scrolled);
} else if (
$(window).width() -
(
event.pageX -
$document.scrollLeft()
) <
o.scrollSensitivity
) {
scrolled = $document.scrollLeft() + o.scrollSpeed;
$document.scrollLeft(scrolled);
}
}
if (scrolled !== false && $.ui.ddmanager && !o.dropBehaviour) {
$.ui.ddmanager.prepareOffsets(this, event);
}
}
//Regenerate the absolute position used for position checks
this.positionAbs = this._convertPositionTo("absolute");
// mjs - find the top offset before rearrangement,
previousTopOffset = this.placeholder.offset().top;
//Set the helper position
if (!this.options.axis || this.options.axis !== "y") {
this.helper[0].style.left = this.position.left + "px";
}
if (!this.options.axis || this.options.axis !== "x") {
this.helper[0].style.top = (this.position.top) + "px";
}
// mjs - check and reset hovering state at each cycle
this.hovering = this.hovering ? this.hovering : null;
this.mouseentered = this.mouseentered ? this.mouseentered : false;
// mjs - let's start caching some variables
(function() {
var _parentItem = this.placeholder.parent().parent();
if (_parentItem && _parentItem.closest(".ui-sortable").length) {
parentItem = _parentItem;
}
}.call(this));
level = this._getLevel(this.placeholder);
childLevels = this._getChildLevels(this.helper);
newList = document.createElement(o.listType);
/* WordPress v5.9 + jQuery UI v1.13 compatibility */
this.dragDirection = {
vertical: this._getDragVerticalDirection(),
horizontal: this._getDragHorizontalDirection()
};
/***/
//Rearrange
for (i = this.items.length - 1; i >= 0; i--) {
//Cache variables and intersection, continue if no intersection
item = this.items[i];
itemElement = item.item[0];
intersection = this._intersectsWithPointer(item);
if (!intersection) {
continue;
}
// Only put the placeholder inside the current Container, skip all
// items form other containers. This works because when moving
// an item from one container to another the
// currentContainer is switched before the placeholder is moved.
//
// Without this moving items in "sub-sortables" can cause the placeholder to jitter
// beetween the outer and inner container.
if (item.instance !== this.currentContainer) {
continue;
}
// No action if intersected item is disabled
// and the element above or below in the direction we're going is also disabled
if (itemElement.className.indexOf(o.disabledClass) !== -1) {
// Note: intersection hardcoded direction values from
// jquery.ui.sortable.js:_intersectsWithPointer
if (intersection === 2) {
// Going down
itemAfter = this.items[i + 1];
if (itemAfter && itemAfter.item.hasClass(o.disabledClass)) {
continue;
}
} else if (intersection === 1) {
// Going up
itemBefore = this.items[i - 1];
if (itemBefore && itemBefore.item.hasClass(o.disabledClass)) {
continue;
}
}
}
method = intersection === 1 ? "next" : "prev";
// cannot intersect with itself
// no useless actions that have been done before
// no action if the item moved is the parent of the item checked
if (itemElement !== this.currentItem[0] &&
this.placeholder[method]()[0] !== itemElement &&
!$.contains(this.placeholder[0], itemElement) &&
(
this.options.type === "semi-dynamic" ?
!$.contains(this.element[0], itemElement) :
true
)
) {
// mjs - we are intersecting an element:
// trigger the mouseenter event and store this state
if (!this.mouseentered) {
$(itemElement).mouseenter();
this.mouseentered = true;
}
// mjs - if the element has children and they are hidden,
// show them after a delay (CSS responsible)
if (o.isTree && $(itemElement).hasClass(o.collapsedClass) && o.expandOnHover) {
if (!this.hovering) {
$(itemElement).addClass(o.hoveringClass);
this.hovering = window.setTimeout(function() {
$(itemElement)
.removeClass(o.collapsedClass)
.addClass(o.expandedClass);
self.refreshPositions();
self._trigger("expand", event, [self._uiHash(), itemElement]);
}, o.expandOnHover);
}
}
this.direction = intersection === 1 ? "down" : "up";
// mjs - rearrange the elements and reset timeouts and hovering state
if (this.options.tolerance === "pointer" || this._intersectsWithSides(item)) {
$(itemElement).mouseleave();
this.mouseentered = false;
$(itemElement).removeClass(o.hoveringClass);
if (this.hovering) {
window.clearTimeout(this.hovering);
}
this.hovering = null;
// mjs - do not switch container if
// it's a root item and 'protectRoot' is true
// or if it's not a root item but we are trying to make it root
if (o.protectRoot &&
!(
this.currentItem[0].parentNode === this.element[0] &&
// it's a root item
itemElement.parentNode !== this.element[0]
// it's intersecting a non-root item
)
) {
if (this.currentItem[0].parentNode !== this.element[0] &&
itemElement.parentNode === this.element[0]
) {
if ( !$(itemElement).children(o.listType).length) {
itemElement.appendChild(newList);
if (o.isTree) {
$(itemElement)
.removeClass(o.leafClass)
.addClass(o.branchClass + " " + o.expandedClass);
}
}
if (this.direction === "down") {
a = $(itemElement).prev().children(o.listType);
} else {
a = $(itemElement).children(o.listType);
}
if (a[0] !== undefined) {
this._rearrange(event, null, a);
}
} else {
this._rearrange(event, item);
}
} else if (!o.protectRoot) {
this._rearrange(event, item);
}
} else {
break;
}
// Clear emtpy ul's/ol's
this._clearEmpty(itemElement);
this._trigger("change", event, this._uiHash());
break;
}
}
// mjs - to find the previous sibling in the list,
// keep backtracking until we hit a valid list item.
(function() {
var _previousItem = this.placeholder.prev();
if (_previousItem.length) {
previousItem = _previousItem;
} else {
previousItem = null;
}
}.call(this));
if (previousItem != null) {
while (
previousItem[0].nodeName.toLowerCase() !== "li" ||
previousItem[0].className.indexOf(o.disabledClass) !== -1 ||
previousItem[0] === this.currentItem[0] ||
previousItem[0] === this.helper[0]
) {
if (previousItem[0].previousSibling) {
previousItem = $(previousItem[0].previousSibling);
} else {
previousItem = null;
break;
}
}
}
// mjs - to find the next sibling in the list,
// keep stepping forward until we hit a valid list item.
(function() {
var _nextItem = this.placeholder.next();
if (_nextItem.length) {
nextItem = _nextItem;
} else {
nextItem = null;
}
}.call(this));
if (nextItem != null) {
while (
nextItem[0].nodeName.toLowerCase() !== "li" ||
nextItem[0].className.indexOf(o.disabledClass) !== -1 ||
nextItem[0] === this.currentItem[0] ||
nextItem[0] === this.helper[0]
) {
if (nextItem[0].nextSibling) {
nextItem = $(nextItem[0].nextSibling);
} else {
nextItem = null;
break;
}
}
}
this.beyondMaxLevels = 0;
// mjs - if the item is moved to the left, send it one level up
// but only if it's at the bottom of the list
if (parentItem != null &&
nextItem == null &&
!(o.protectRoot && parentItem[0].parentNode == this.element[0]) &&
(
o.rtl &&
(
this.positionAbs.left +
this.helper.outerWidth() > parentItem.offset().left +
parentItem.outerWidth()
) ||
!o.rtl && (this.positionAbs.left < parentItem.offset().left)
)
) {
parentItem.after(this.placeholder[0]);
helperIsNotSibling = !parentItem
.children(o.listItem)
.children("li:visible:not(.ui-sortable-helper)")
.length;
if (o.isTree && helperIsNotSibling) {
parentItem
.removeClass(this.options.branchClass + " " + this.options.expandedClass)
.addClass(this.options.leafClass);
}
if(typeof parentItem !== 'undefined')
this._clearEmpty(parentItem[0]);
this._trigger("change", event, this._uiHash());
// mjs - if the item is below a sibling and is moved to the right,
// make it a child of that sibling
} else if (previousItem != null &&
!previousItem.hasClass(o.disableNestingClass) &&
(
previousItem.children(o.listType).length &&
previousItem.children(o.listType).is(":visible") ||
!previousItem.children(o.listType).length
) &&
!(o.protectRoot && this.currentItem[0].parentNode === this.element[0]) &&
(
o.rtl &&
(
this.positionAbs.left +
this.helper.outerWidth() <
previousItem.offset().left +
previousItem.outerWidth() -
o.tabSize
) ||
!o.rtl &&
(this.positionAbs.left > previousItem.offset().left + o.tabSize)
)
) {
this._isAllowed(previousItem, level, level + childLevels + 1);
if (!previousItem.children(o.listType).length) {
previousItem[0].appendChild(newList);
if (o.isTree) {
previousItem
.removeClass(o.leafClass)
.addClass(o.branchClass + " " + o.expandedClass);
}
}
// mjs - if this item is being moved from the top, add it to the top of the list.
if (previousTopOffset && (previousTopOffset <= previousItem.offset().top)) {
previousItem.children(o.listType).prepend(this.placeholder);
} else {
// mjs - otherwise, add it to the bottom of the list.
previousItem.children(o.listType)[0].appendChild(this.placeholder[0]);
}
if(typeof parentItem !== 'undefined')
this._clearEmpty(parentItem[0]);
this._trigger("change", event, this._uiHash());
} else {
this._isAllowed(parentItem, level, level + childLevels);
}
//Post events to containers
this._contactContainers(event);
//Interconnect with droppables
if ($.ui.ddmanager) {
$.ui.ddmanager.drag(this, event);
}
//Call callbacks
this._trigger("sort", event, this._uiHash());
this.lastPositionAbs = this.positionAbs;
return false;
},
_mouseStop: function(event) {
// mjs - if the item is in a position not allowed, send it back
if (this.beyondMaxLevels) {
this.placeholder.removeClass(this.options.errorClass);
if (this.domPosition.prev) {
$(this.domPosition.prev).after(this.placeholder);
} else {
$(this.domPosition.parent).prepend(this.placeholder);
}
this._trigger("revert", event, this._uiHash());
}
// mjs - clear the hovering timeout, just to be sure
$("." + this.options.hoveringClass)
.mouseleave()
.removeClass(this.options.hoveringClass);
this.mouseentered = false;
if (this.hovering) {
window.clearTimeout(this.hovering);
}
this.hovering = null;
this._relocate_event = event;
this._pid_current = $(this.domPosition.parent).parent().attr("id");
this._sort_current = this.domPosition.prev ? $(this.domPosition.prev).next().index() : 0;
$.ui.sortable.prototype._mouseStop.apply(this, arguments); //asybnchronous execution, @see _clear for the relocate event.
},
// mjs - this function is slightly modified
// to make it easier to hover over a collapsed element and have it expand
_intersectsWithSides: function(item) {
var half = this.options.isTree ? .8 : .5,
isOverBottomHalf = isOverAxis(
this.positionAbs.top + this.offset.click.top,
item.top + (item.height * half),
item.height
),
isOverTopHalf = isOverAxis(
this.positionAbs.top + this.offset.click.top,
item.top - (item.height * half),
item.height
),
isOverRightHalf = isOverAxis(
this.positionAbs.left + this.offset.click.left,
item.left + (item.width / 2),
item.width
),
verticalDirection = this._getDragVerticalDirection(),
horizontalDirection = this._getDragHorizontalDirection();
if (this.floating && horizontalDirection) {
return (
(horizontalDirection === "right" && isOverRightHalf) ||
(horizontalDirection === "left" && !isOverRightHalf)
);
} else {
return verticalDirection && (
(verticalDirection === "down" && isOverBottomHalf) ||
(verticalDirection === "up" && isOverTopHalf)
);
}
},
_contactContainers: function() {
if (this.options.protectRoot && this.currentItem[0].parentNode === this.element[0] ) {
return;
}
$.ui.sortable.prototype._contactContainers.apply(this, arguments);
},
_clear: function() {
var i,
item;
$.ui.sortable.prototype._clear.apply(this, arguments);
//relocate event
if (!(this._pid_current === this._uiHash().item.parent().parent().attr("id") &&
this._sort_current === this._uiHash().item.index())) {
this._trigger("relocate", this._relocate_event, this._uiHash());
}
// mjs - clean last empty ul/ol
for (i = this.items.length - 1; i >= 0; i--) {
item = this.items[i].item[0];
this._clearEmpty(item);
}
},
serialize: function(options) {
var o = $.extend({}, this.options, options),
items = this._getItemsAsjQuery(o && o.connected),
str = [];
$(items).each(function() {
var res = ($(o.item || this).attr(o.attribute || "id") || "")
.match(o.expression || (/(.+)[-=_](.+)/)),
pid = ($(o.item || this).parent(o.listType)
.parent(o.items)
.attr(o.attribute || "id") || "")
.match(o.expression || (/(.+)[-=_](.+)/));
if (res) {
str.push(
(
(o.key || res[1]) +
"[" +
(o.key && o.expression ? res[1] : res[2]) + "]"
) +
"=" +
(pid ? (o.key && o.expression ? pid[1] : pid[2]) : o.rootID));
}
});
if (!str.length && o.key) {
str.push(o.key + "=");
}
return str.join("&");
},
toHierarchy: function(options) {
var o = $.extend({}, this.options, options),
ret = [];
$(this.element).children(o.items).each(function() {
var level = _recursiveItems(this);
ret.push(level);
});
return ret;
function _recursiveItems(item) {
var id = ($(item).attr(o.attribute || "id") || "").match(o.expression || (/(.+)[-=_](.+)/)),
currentItem;
var data = $(item).data();
if (data.nestedSortableItem) {
delete data.nestedSortableItem; // Remove the nestedSortableItem object from the data
}
if (id) {
currentItem = {
"id": id[2]
};
currentItem = $.extend({}, currentItem, data); // Combine the two objects
if ($(item).children(o.listType).children(o.items).length > 0) {
currentItem.children = [];
$(item).children(o.listType).children(o.items).each(function() {
var level = _recursiveItems(this);
currentItem.children.push(level);
});
}
return currentItem;
}
}
},
toArray: function(options) {
var o = $.extend({}, this.options, options),
sDepth = o.startDepthCount || 0,
ret = [],
left = 1;
if (!o.excludeRoot) {
ret.push({
"item_id": o.rootID,
"parent_id": null,
"depth": sDepth,
"left": left,
"right": ($(o.items, this.element).length + 1) * 2
});
left++;
}
$(this.element).children(o.items).each(function() {
left = _recursiveArray(this, sDepth, left);
});
ret = ret.sort(function(a, b) { return (a.left - b.left); });
return ret;
function _recursiveArray(item, depth, _left) {
var right = _left + 1,
id,
pid,
parentItem;
if ($(item).children(o.listType).children(o.items).length > 0) {
depth++;
$(item).children(o.listType).children(o.items).each(function() {
right = _recursiveArray($(this), depth, right);
});
depth--;
}
id = ($(item).attr(o.attribute || "id") || "").match(o.expression || (/(.+)[-=_](.+)/));
if (depth === sDepth) {
pid = o.rootID;
} else {
parentItem = ($(item).parent(o.listType)
.parent(o.items)
.attr(o.attribute || "id"))
.match(o.expression || (/(.+)[-=_](.+)/));
pid = parentItem[2];
}
if (id) {
var data = $(item).children('div').data();
var itemObj = $.extend( data, {
"id":id[2],
"parent_id":pid,
"depth":depth,
"left":_left,
"right":right
} );
ret.push( itemObj );
}
_left = right + 1;
return _left;
}
},
_clearEmpty: function (item) {
function replaceClass(elem, search, replace, swap) {
if (swap) {
search = [replace, replace = search][0];
}
$(elem).removeClass(search).addClass(replace);
}
var o = this.options,
childrenList = $(item).children(o.listType),
hasChildren = childrenList.has('li').length;
var doNotClear =
o.doNotClear ||
hasChildren ||
o.protectRoot && $(item)[0] === this.element[0];
if (o.isTree) {
replaceClass(item, o.branchClass, o.leafClass, doNotClear);
}
if (!doNotClear) {
childrenList.parent().removeClass(o.expandedClass);
childrenList.remove();
}
},
_getLevel: function(item) {
var level = 1,
list;
if (this.options.listType) {
list = item.closest(this.options.listType);
while (list && list.length > 0 && !list.is(".ui-sortable")) {
level++;
list = list.parent().closest(this.options.listType);
}
}
return level;
},
_getChildLevels: function(parent, depth) {
var self = this,
o = this.options,
result = 0;
depth = depth || 0;
$(parent).children(o.listType).children(o.items).each(function(index, child) {
result = Math.max(self._getChildLevels(child, depth + 1), result);
});
return depth ? result + 1 : result;
},
_isAllowed: function(parentItem, level, levels) {
var o = this.options,
// this takes into account the maxLevels set to the recipient list
maxLevels = this
.placeholder
.closest(".ui-sortable")
.nestedSortable("option", "maxLevels"),
// Check if the parent has changed to prevent it, when o.disableParentChange is true
oldParent = this.currentItem.parent().parent(),
disabledByParentchange = o.disableParentChange && (
//From somewhere to somewhere else, except the root
typeof parentItem !== 'undefined' && !oldParent.is(parentItem) ||
typeof parentItem === 'undefined' && oldParent.is("li") //From somewhere to the root
);
// mjs - is the root protected?
// mjs - are we nesting too deep?
if (
disabledByParentchange ||
!o.isAllowed(this.placeholder, parentItem, this.currentItem)
) {
this.placeholder.addClass(o.errorClass);
if (maxLevels < levels && maxLevels !== 0) {
this.beyondMaxLevels = levels - maxLevels;
} else {
this.beyondMaxLevels = 1;
}
} else {
if (maxLevels < levels && maxLevels !== 0) {
this.placeholder.addClass(o.errorClass);
this.beyondMaxLevels = levels - maxLevels;
} else {
this.placeholder.removeClass(o.errorClass);
this.beyondMaxLevels = 0;
}
}
}
}));
$.mjs.nestedSortable.prototype.options = $.extend(
{},
$.ui.sortable.prototype.options,
$.mjs.nestedSortable.prototype.options
);
}));