/*! UIkit 2.9.0 | http://www.getuikit.com | (c) 2014 YOOtheme | MIT License */
/*
* Based on Nestable jQuery Plugin - Copyright (c) 2012 David Bushell - http://dbushell.com/
*/
(function(addon) {
var component;
if (jQuery && jQuery.UIkit) {
component = addon(jQuery, jQuery.UIkit);
}
if (typeof define == "function" && define.amd) {
define("uikit-nestable", ["uikit"], function(){
return component || addon(jQuery, jQuery.UIkit);
});
}
})(function($, UI) {
var hasTouch = 'ontouchstart' in window,
html = $("html"),
touchedlists = [],
$win = UI.$win;
/**
* Detect CSS pointer-events property
* events are normally disabled on the dragging element to avoid conflicts
* https://github.com/ausi/Feature-detection-technique-for-pointer-events/blob/master/modernizr-pointerevents.js
*/
var hasPointerEvents = (function() {
var el = document.createElement('div'), docEl = document.documentElement;
if (!('pointerEvents' in el.style)) {
return false;
}
el.style.pointerEvents = 'auto';
el.style.pointerEvents = 'x';
docEl.appendChild(el);
var supports = window.getComputedStyle && window.getComputedStyle(el, '').pointerEvents === 'auto';
docEl.removeChild(el);
return !!supports;
})();
var eStart = hasTouch ? 'touchstart' : 'mousedown',
eMove = hasTouch ? 'touchmove' : 'mousemove',
eEnd = hasTouch ? 'touchend' : 'mouseup',
eCancel = hasTouch ? 'touchcancel' : 'mouseup';
UI.component('nestable', {
defaults: {
prefix : 'uk',
listNodeName : 'ul',
itemNodeName : 'li',
listBaseClass : '{prefix}-nestable',
listClass : '{prefix}-nestable-list',
listitemClass : '{prefix}-nestable-list-item',
itemClass : '{prefix}-nestable-item',
dragClass : '{prefix}-nestable-list-dragged',
movingClass : '{prefix}-nestable-moving',
handleClass : '{prefix}-nestable-handle',
collapsedClass : '{prefix}-collapsed',
placeClass : '{prefix}-nestable-placeholder',
noDragClass : '{prefix}-nestable-nodrag',
emptyClass : '{prefix}-nestable-empty',
group : 0,
maxDepth : 10,
threshold : 20
},
init: function()
{
var $this = this;
Object.keys(this.options).forEach(function(key){
if(String($this.options[key]).indexOf('{prefix}')!=-1) {
$this.options[key] = $this.options[key].replace('{prefix}', $this.options.prefix);
}
});
this.tplempty = '<div class="' + this.options.emptyClass + '"/>';
this.find(">"+this.options.itemNodeName).addClass(this.options.listitemClass)
.end()
.find("ul:not(.ignore-list)").addClass(this.options.listClass)
.find(">li").addClass(this.options.listitemClass);
if (!this.element.children(this.options.itemNodeName).length) {
this.element.append(this.tplempty);
}
this.element.data("nestable-id", "ID"+(new Date().getTime())+"RAND"+(Math.ceil(Math.random() *100000)));
this.reset();
this.element.data('nestable-group', this.options.group);
this.placeEl = $('<div class="' + this.options.placeClass + '"/>');
this.find(this.options.itemNodeName).each(function() {
$this.setParent($(this));
});
this.on('click', '[data-nestable-action]', function(e) {
if ($this.dragEl || (!hasTouch && e.button !== 0)) {
return;
}
e.preventDefault();
var target = $(e.currentTarget),
action = target.data('nestableAction'),
item = target.closest($this.options.itemNodeName);
if (action === 'collapse') {
$this.collapseItem(item);
}
if (action === 'expand') {
$this.expandItem(item);
}
if (action === 'toggle') {
$this.toggleItem(item);
}
});
var onStartEvent = function(e) {
var handle = $(e.target);
if (!handle.hasClass($this.options.handleClass)) {
if (handle.closest('.' + $this.options.noDragClass).length) {
return;
}
handle = handle.closest('.' + $this.options.handleClass);
}
if (!handle.length || $this.dragEl || (!hasTouch && e.button !== 0) || (hasTouch && e.touches.length !== 1)) {
return;
}
e.preventDefault();
$this.dragStart(hasTouch ? e.touches[0] : e);
$this.trigger('nestable-start', [$this]);
};
var onMoveEvent = function(e) {
if ($this.dragEl) {
e.preventDefault();
$this.dragMove(hasTouch ? e.touches[0] : e);
$this.trigger('nestable-move', [$this]);
}
};
var onEndEvent = function(e) {
if ($this.dragEl) {
e.preventDefault();
$this.dragStop(hasTouch ? e.touches[0] : e);
$this.trigger('nestable-stop', [$this]);
}
};
if (hasTouch) {
this.element[0].addEventListener(eStart, onStartEvent, false);
window.addEventListener(eMove, onMoveEvent, false);
window.addEventListener(eEnd, onEndEvent, false);
window.addEventListener(eCancel, onEndEvent, false);
} else {
this.on(eStart, onStartEvent);
$win.on(eMove, onMoveEvent);
$win.on(eEnd, onEndEvent);
}
},
serialize: function() {
var data,
depth = 0,
list = this;
step = function(level, depth) {
var array = [ ], items = level.children(list.options.itemNodeName);
items.each(function() {
var li = $(this),
item = $.extend({}, li.data()),
sub = li.children(list.options.listNodeName);
if (sub.length) {
item.children = step(sub, depth + 1);
}
array.push(item);
});
return array;
};
data = step(list.element, depth);
return data;
},
list: function(options) {
var data = [],
list = this,
depth = 0,
options = $.extend({}, list.options, options),
step = function(level, depth, parent) {
var items = level.children(options.itemNodeName);
items.each(function(index) {
var li = $(this),
item = $.extend({parent_id: (parent ? parent : null), depth: depth, order: index}, li.data()),
sub = li.children(options.listNodeName);
data.push(item);
if (sub.length) {
step(sub, depth + 1, li.data(options.idProperty || 'id'));
}
});
};
step(list.element, depth);
return data;
},
reset: function() {
this.mouse = {
offsetX : 0,
offsetY : 0,
startX : 0,
startY : 0,
lastX : 0,
lastY : 0,
nowX : 0,
nowY : 0,
distX : 0,
distY : 0,
dirAx : 0,
dirX : 0,
dirY : 0,
lastDirX : 0,
lastDirY : 0,
distAxX : 0,
distAxY : 0
};
this.moving = false;
this.dragEl = null;
this.dragRootEl = null;
this.dragDepth = 0;
this.hasNewRoot = false;
this.pointEl = null;
for (var i=0; i<touchedlists.length; i++) {
if (!touchedlists[i].children().length) {
touchedlists[i].append(this.tplempty);
}
}
touchedlists = [];
},
toggleItem: function(li) {
this[li.hasClass(this.options.collapsedClass) ? "expandItem":"collapseItem"](li);
},
expandItem: function(li) {
li.removeClass(this.options.collapsedClass);
},
collapseItem: function(li) {
var lists = li.children(this.options.listNodeName);
if (lists.length) {
li.addClass(this.options.collapsedClass);
}
},
expandAll: function() {
var list = this;
this.find(list.options.itemNodeName).each(function() {
list.expandItem($(this));
});
},
collapseAll: function() {
var list = this;
this.find(list.options.itemNodeName).each(function() {
list.collapseItem($(this));
});
},
setParent: function(li) {
if (li.children(this.options.listNodeName).length) {
li.addClass("uk-parent");
}
},
unsetParent: function(li) {
li.removeClass('uk-parent '+this.options.collapsedClass);
li.children(this.options.listNodeName).remove();
},
dragStart: function(e) {
var mouse = this.mouse,
target = $(e.target),
dragItem = target.closest(this.options.itemNodeName),
offset = dragItem.offset();
this.placeEl.css('height', dragItem.height());
mouse.offsetX = e.pageX - offset.left;
mouse.offsetY = e.pageY - offset.top;
mouse.startX = mouse.lastX = offset.left;
mouse.startY = mouse.lastY = offset.top;
this.dragRootEl = this.element;
this.dragEl = $(document.createElement(this.options.listNodeName)).addClass(this.options.listClass + ' ' + this.options.dragClass);
this.dragEl.css('width', dragItem.width());
this.tmpDragOnSiblings = [dragItem[0].previousSibling, dragItem[0].nextSibling];
// fix for zepto.js
//dragItem.after(this.placeEl).detach().appendTo(this.dragEl);
dragItem.after(this.placeEl);
dragItem[0].parentNode.removeChild(dragItem[0]);
dragItem.appendTo(this.dragEl);
$(document.body).append(this.dragEl);
this.dragEl.css({
left : offset.left,
top : offset.top
});
// total depth of dragging item
var i, depth,
items = this.dragEl.find(this.options.itemNodeName);
for (i = 0; i < items.length; i++) {
depth = $(items[i]).parents(this.options.listNodeName).length;
if (depth > this.dragDepth) {
this.dragDepth = depth;
}
}
html.addClass(this.options.movingClass);
},
dragStop: function(e) {
// fix for zepto.js
//this.placeEl.replaceWith(this.dragEl.children(this.options.itemNodeName + ':first').detach());
var el = this.dragEl.children(this.options.itemNodeName).first();
el[0].parentNode.removeChild(el[0]);
this.placeEl.replaceWith(el);
this.dragEl.remove();
if (this.tmpDragOnSiblings[0]!=el[0].previousSibling || this.tmpDragOnSiblings[0]!=el[0].previousSibling) {
this.element.trigger('nestable-change',[el, this.hasNewRoot ? "added":"moved"]);
if (this.hasNewRoot) {
this.dragRootEl.trigger('nestable-change', [el, "removed"]);
}
}
this.reset();
html.removeClass(this.options.movingClass);
},
dragMove: function(e) {
var list, parent, prev, next, depth,
opt = this.options,
mouse = this.mouse;
this.dragEl.css({
left : e.pageX - mouse.offsetX,
top : e.pageY - mouse.offsetY
});
// mouse position last events
mouse.lastX = mouse.nowX;
mouse.lastY = mouse.nowY;
// mouse position this events
mouse.nowX = e.pageX;
mouse.nowY = e.pageY;
// distance mouse moved between events
mouse.distX = mouse.nowX - mouse.lastX;
mouse.distY = mouse.nowY - mouse.lastY;
// direction mouse was moving
mouse.lastDirX = mouse.dirX;
mouse.lastDirY = mouse.dirY;
// direction mouse is now moving (on both axis)
mouse.dirX = mouse.distX === 0 ? 0 : mouse.distX > 0 ? 1 : -1;
mouse.dirY = mouse.distY === 0 ? 0 : mouse.distY > 0 ? 1 : -1;
// axis mouse is now moving on
var newAx = Math.abs(mouse.distX) > Math.abs(mouse.distY) ? 1 : 0;
// do nothing on first move
if (!mouse.moving) {
mouse.dirAx = newAx;
mouse.moving = true;
return;
}
// calc distance moved on this axis (and direction)
if (mouse.dirAx !== newAx) {
mouse.distAxX = 0;
mouse.distAxY = 0;
} else {
mouse.distAxX += Math.abs(mouse.distX);
if (mouse.dirX !== 0 && mouse.dirX !== mouse.lastDirX) {
mouse.distAxX = 0;
}
mouse.distAxY += Math.abs(mouse.distY);
if (mouse.dirY !== 0 && mouse.dirY !== mouse.lastDirY) {
mouse.distAxY = 0;
}
}
mouse.dirAx = newAx;
/**
* move horizontal
*/
if (mouse.dirAx && mouse.distAxX >= opt.threshold) {
// reset move distance on x-axis for new phase
mouse.distAxX = 0;
prev = this.placeEl.prev(opt.itemNodeName);
// increase horizontal level if previous sibling exists and is not collapsed
if (mouse.distX > 0 && prev.length && !prev.hasClass(opt.collapsedClass)) {
// cannot increase level when item above is collapsed
list = prev.find(opt.listNodeName).last();
// check if depth limit has reached
depth = this.placeEl.parents(opt.listNodeName).length;
if (depth + this.dragDepth <= opt.maxDepth) {
// create new sub-level if one doesn't exist
if (!list.length) {
list = $('<' + opt.listNodeName + '/>').addClass(opt.listClass);
list.append(this.placeEl);
prev.append(list);
this.setParent(prev);
} else {
// else append to next level up
list = prev.children(opt.listNodeName).last();
list.append(this.placeEl);
}
}
}
// decrease horizontal level
if (mouse.distX < 0) {
// we can't decrease a level if an item preceeds the current one
next = this.placeEl.next(opt.itemNodeName);
if (!next.length) {
parent = this.placeEl.parent();
this.placeEl.closest(opt.itemNodeName).after(this.placeEl);
if (!parent.children().length) {
this.unsetParent(parent.parent());
}
}
}
}
var isEmpty = false;
// find list item under cursor
if (!hasPointerEvents) {
this.dragEl[0].style.visibility = 'hidden';
}
this.pointEl = $(document.elementFromPoint(e.pageX - document.body.scrollLeft, e.pageY - (window.pageYOffset || document.documentElement.scrollTop)));
if (!hasPointerEvents) {
this.dragEl[0].style.visibility = 'visible';
}
if (this.pointEl.hasClass(opt.handleClass)) {
this.pointEl = this.pointEl.closest(opt.itemNodeName);
} else {
var nestableitem = this.pointEl.closest('.'+opt.itemClass);
if(nestableitem.length) {
this.pointEl = nestableitem.closest(opt.itemNodeName);
}
}
if (this.pointEl.hasClass(opt.emptyClass)) {
isEmpty = true;
} else if (this.pointEl.data('nestable') && !this.pointEl.children().length) {
isEmpty = true;
this.pointEl = $(this.tplempty).appendTo(this.pointEl);
} else if (!this.pointEl.length || !this.pointEl.hasClass(opt.listitemClass)) {
return;
}
// find parent list of item under cursor
var pointElRoot = this.element,
tmpRoot = this.pointEl.closest('.'+this.options.listBaseClass),
isNewRoot = pointElRoot[0] !== this.pointEl.closest('.'+this.options.listBaseClass)[0],
$newRoot = tmpRoot;
/**
* move vertical
*/
if (!mouse.dirAx || isNewRoot || isEmpty) {
// check if groups match if dragging over new root
if (isNewRoot && opt.group !== $newRoot.data('nestable-group')) {
return;
} else {
touchedlists.push(pointElRoot);
}
// check depth limit
depth = this.dragDepth - 1 + this.pointEl.parents(opt.listNodeName).length;
if (depth > opt.maxDepth) {
return;
}
var before = e.pageY < (this.pointEl.offset().top + this.pointEl.height() / 2);
parent = this.placeEl.parent();
// if empty create new list to replace empty placeholder
if (isEmpty) {
this.pointEl.replaceWith(this.placeEl);
} else if (before) {
this.pointEl.before(this.placeEl);
} else {
this.pointEl.after(this.placeEl);
}
if (!parent.children().length) {
if(!parent.data("nestable")) this.unsetParent(parent.parent());
}
if (!this.dragRootEl.find(opt.itemNodeName).length && !this.dragRootEl.children().length) {
this.dragRootEl.append(this.tplempty);
}
// parent root list has changed
if (isNewRoot) {
this.dragRootEl = tmpRoot;
this.hasNewRoot = this.element[0] !== this.dragRootEl[0];
}
}
}
});
// init code
UI.ready(function(context) {
$("[data-uk-nestable]", context).each(function(){
var ele = $(this);
if(!ele.data("nestable")) {
var plugin = UI.nestable(ele, UI.Utils.options(ele.attr("data-uk-nestable")));
}
});
});
return UI.nestable;
});