486 lines
18 KiB
JavaScript
486 lines
18 KiB
JavaScript
|
/*!
|
||
|
|
* Nestable jQuery Plugin - Copyright (c) 2012 David Bushell - http://dbushell.com/
|
||
|
|
* Dual-licensed under the BSD or MIT licenses
|
||
|
|
*/
|
||
|
|
;(function($, window, document, undefined)
|
||
|
|
{
|
||
|
|
var hasTouch = 'ontouchstart' in window;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 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';
|
||
|
|
|
||
|
|
var defaults = {
|
||
|
|
listNodeName : 'ol',
|
||
|
|
itemNodeName : 'li',
|
||
|
|
rootClass : 'dd',
|
||
|
|
listClass : 'dd-list',
|
||
|
|
itemClass : 'dd-item',
|
||
|
|
dragClass : 'dd-dragel',
|
||
|
|
handleClass : 'dd-handle',
|
||
|
|
collapsedClass : 'dd-collapsed',
|
||
|
|
placeClass : 'dd-placeholder',
|
||
|
|
noDragClass : 'dd-nodrag',
|
||
|
|
emptyClass : 'dd-empty',
|
||
|
|
expandBtnHTML : '<button data-action="expand" type="button">Expand</button>',
|
||
|
|
collapseBtnHTML : '<button data-action="collapse" type="button">Collapse</button>',
|
||
|
|
group : 0,
|
||
|
|
maxDepth : 5,
|
||
|
|
threshold : 20
|
||
|
|
};
|
||
|
|
|
||
|
|
function Plugin(element, options)
|
||
|
|
{
|
||
|
|
this.w = $(window);
|
||
|
|
this.el = $(element);
|
||
|
|
this.options = $.extend({}, defaults, options);
|
||
|
|
this.init();
|
||
|
|
}
|
||
|
|
|
||
|
|
Plugin.prototype = {
|
||
|
|
|
||
|
|
init: function()
|
||
|
|
{
|
||
|
|
var list = this;
|
||
|
|
|
||
|
|
list.reset();
|
||
|
|
|
||
|
|
list.el.data('nestable-group', this.options.group);
|
||
|
|
|
||
|
|
list.placeEl = $('<div class="' + list.options.placeClass + '"/>');
|
||
|
|
|
||
|
|
$.each(this.el.find(list.options.itemNodeName), function(k, el) {
|
||
|
|
list.setParent($(el));
|
||
|
|
});
|
||
|
|
|
||
|
|
list.el.on('click', 'button', function(e) {
|
||
|
|
if (list.dragEl || (!hasTouch && e.button !== 0)) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
var target = $(e.currentTarget),
|
||
|
|
action = target.data('action'),
|
||
|
|
item = target.parent(list.options.itemNodeName);
|
||
|
|
if (action === 'collapse') {
|
||
|
|
list.collapseItem(item);
|
||
|
|
}
|
||
|
|
if (action === 'expand') {
|
||
|
|
list.expandItem(item);
|
||
|
|
}
|
||
|
|
});
|
||
|
|
|
||
|
|
var onStartEvent = function(e)
|
||
|
|
{
|
||
|
|
var handle = $(e.target);
|
||
|
|
if (!handle.hasClass(list.options.handleClass)) {
|
||
|
|
if (handle.closest('.' + list.options.noDragClass).length) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
handle = handle.closest('.' + list.options.handleClass);
|
||
|
|
}
|
||
|
|
if (!handle.length || list.dragEl || (!hasTouch && e.button !== 0) || (hasTouch && e.touches.length !== 1)) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
e.preventDefault();
|
||
|
|
list.dragStart(hasTouch ? e.touches[0] : e);
|
||
|
|
};
|
||
|
|
|
||
|
|
var onMoveEvent = function(e)
|
||
|
|
{
|
||
|
|
if (list.dragEl) {
|
||
|
|
e.preventDefault();
|
||
|
|
list.dragMove(hasTouch ? e.touches[0] : e);
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
var onEndEvent = function(e)
|
||
|
|
{
|
||
|
|
if (list.dragEl) {
|
||
|
|
e.preventDefault();
|
||
|
|
list.dragStop(hasTouch ? e.touches[0] : e);
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
if (hasTouch) {
|
||
|
|
list.el[0].addEventListener(eStart, onStartEvent, false);
|
||
|
|
window.addEventListener(eMove, onMoveEvent, false);
|
||
|
|
window.addEventListener(eEnd, onEndEvent, false);
|
||
|
|
window.addEventListener(eCancel, onEndEvent, false);
|
||
|
|
} else {
|
||
|
|
list.el.on(eStart, onStartEvent);
|
||
|
|
list.w.on(eMove, onMoveEvent);
|
||
|
|
list.w.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 = $.extend({}, li.data()),
|
||
|
|
sub = li.children(list.options.listNodeName);
|
||
|
|
if (sub.length) {
|
||
|
|
item.children = step(sub, depth + 1);
|
||
|
|
}
|
||
|
|
array.push(item);
|
||
|
|
});
|
||
|
|
return array;
|
||
|
|
};
|
||
|
|
data = step(list.el.find(list.options.listNodeName).first(), depth);
|
||
|
|
return data;
|
||
|
|
},
|
||
|
|
|
||
|
|
serialise: function()
|
||
|
|
{
|
||
|
|
return this.serialize();
|
||
|
|
},
|
||
|
|
|
||
|
|
reset: function()
|
||
|
|
{
|
||
|
|
this.mouse = {
|
||
|
|
offsetX : 0,
|
||
|
|
offsetY : 0,
|
||
|
|
startX : 0,
|
||
|
|
startY : 0,
|
||
|
|
lastX : 0,
|
||
|
|
lastY : 0,
|
||
|
|
nowX : 0,
|
||
|
|
nowY : 0,
|
||
|
|
distX : 0,
|
||
|
|
distY : 0,
|
||
|
|
dirAx : 0,
|
||
|
|
dirX : 0,
|
||
|
|
dirY : 0,
|
||
|
|
lastDirX : 0,
|
||
|
|
lastDirY : 0,
|
||
|
|
distAxX : 0,
|
||
|
|
distAxY : 0
|
||
|
|
};
|
||
|
|
this.moving = false;
|
||
|
|
this.dragEl = null;
|
||
|
|
this.dragRootEl = null;
|
||
|
|
this.dragDepth = 0;
|
||
|
|
this.hasNewRoot = false;
|
||
|
|
this.pointEl = null;
|
||
|
|
},
|
||
|
|
|
||
|
|
expandItem: function(li)
|
||
|
|
{
|
||
|
|
li.removeClass(this.options.collapsedClass);
|
||
|
|
li.children('[data-action="expand"]').hide();
|
||
|
|
li.children('[data-action="collapse"]').show();
|
||
|
|
li.children(this.options.listNodeName).show();
|
||
|
|
},
|
||
|
|
|
||
|
|
collapseItem: function(li)
|
||
|
|
{
|
||
|
|
var lists = li.children(this.options.listNodeName);
|
||
|
|
if (lists.length) {
|
||
|
|
li.addClass(this.options.collapsedClass);
|
||
|
|
li.children('[data-action="collapse"]').hide();
|
||
|
|
li.children('[data-action="expand"]').show();
|
||
|
|
li.children(this.options.listNodeName).hide();
|
||
|
|
}
|
||
|
|
},
|
||
|
|
|
||
|
|
expandAll: function()
|
||
|
|
{
|
||
|
|
var list = this;
|
||
|
|
list.el.find(list.options.itemNodeName).each(function() {
|
||
|
|
list.expandItem($(this));
|
||
|
|
});
|
||
|
|
},
|
||
|
|
|
||
|
|
collapseAll: function()
|
||
|
|
{
|
||
|
|
var list = this;
|
||
|
|
list.el.find(list.options.itemNodeName).each(function() {
|
||
|
|
list.collapseItem($(this));
|
||
|
|
});
|
||
|
|
},
|
||
|
|
|
||
|
|
setParent: function(li)
|
||
|
|
{
|
||
|
|
if (li.children(this.options.listNodeName).length) {
|
||
|
|
li.prepend($(this.options.expandBtnHTML));
|
||
|
|
li.prepend($(this.options.collapseBtnHTML));
|
||
|
|
}
|
||
|
|
li.children('[data-action="expand"]').hide();
|
||
|
|
},
|
||
|
|
|
||
|
|
unsetParent: function(li)
|
||
|
|
{
|
||
|
|
li.removeClass(this.options.collapsedClass);
|
||
|
|
li.children('[data-action]').remove();
|
||
|
|
li.children(this.options.listNodeName).remove();
|
||
|
|
},
|
||
|
|
|
||
|
|
dragStart: function(e)
|
||
|
|
{
|
||
|
|
var mouse = this.mouse,
|
||
|
|
target = $(e.target),
|
||
|
|
dragItem = target.closest(this.options.itemNodeName);
|
||
|
|
|
||
|
|
this.placeEl.css('height', dragItem.height());
|
||
|
|
|
||
|
|
mouse.offsetX = e.offsetX !== undefined ? e.offsetX : e.pageX - target.offset().left;
|
||
|
|
mouse.offsetY = e.offsetY !== undefined ? e.offsetY : e.pageY - target.offset().top;
|
||
|
|
mouse.startX = mouse.lastX = e.pageX;
|
||
|
|
mouse.startY = mouse.lastY = e.pageY;
|
||
|
|
|
||
|
|
this.dragRootEl = this.el;
|
||
|
|
|
||
|
|
this.dragEl = $(document.createElement(this.options.listNodeName)).addClass(this.options.listClass + ' ' + this.options.dragClass);
|
||
|
|
this.dragEl.css('width', dragItem.width());
|
||
|
|
|
||
|
|
// 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' : e.pageX - mouse.offsetX,
|
||
|
|
'top' : e.pageY - mouse.offsetY
|
||
|
|
});
|
||
|
|
// 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;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
},
|
||
|
|
|
||
|
|
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();
|
||
|
|
this.el.trigger('change');
|
||
|
|
if (this.hasNewRoot) {
|
||
|
|
this.dragRootEl.trigger('change');
|
||
|
|
}
|
||
|
|
this.reset();
|
||
|
|
},
|
||
|
|
|
||
|
|
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.parent(opt.itemNodeName);
|
||
|
|
}
|
||
|
|
if (this.pointEl.hasClass(opt.emptyClass)) {
|
||
|
|
isEmpty = true;
|
||
|
|
}
|
||
|
|
else if (!this.pointEl.length || !this.pointEl.hasClass(opt.itemClass)) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
// find parent list of item under cursor
|
||
|
|
var pointElRoot = this.pointEl.closest('.' + opt.rootClass),
|
||
|
|
isNewRoot = this.dragRootEl.data('nestable-id') !== pointElRoot.data('nestable-id');
|
||
|
|
|
||
|
|
/**
|
||
|
|
* move vertical
|
||
|
|
*/
|
||
|
|
if (!mouse.dirAx || isNewRoot || isEmpty) {
|
||
|
|
// check if groups match if dragging over new root
|
||
|
|
if (isNewRoot && opt.group !== pointElRoot.data('nestable-group')) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
// 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) {
|
||
|
|
list = $(document.createElement(opt.listNodeName)).addClass(opt.listClass);
|
||
|
|
list.append(this.placeEl);
|
||
|
|
this.pointEl.replaceWith(list);
|
||
|
|
}
|
||
|
|
else if (before) {
|
||
|
|
this.pointEl.before(this.placeEl);
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
this.pointEl.after(this.placeEl);
|
||
|
|
}
|
||
|
|
if (!parent.children().length) {
|
||
|
|
this.unsetParent(parent.parent());
|
||
|
|
}
|
||
|
|
if (!this.dragRootEl.find(opt.itemNodeName).length) {
|
||
|
|
this.dragRootEl.append('<div class="' + opt.emptyClass + '"/>');
|
||
|
|
}
|
||
|
|
// parent root list has changed
|
||
|
|
if (isNewRoot) {
|
||
|
|
this.dragRootEl = pointElRoot;
|
||
|
|
this.hasNewRoot = this.el[0] !== this.dragRootEl[0];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
};
|
||
|
|
|
||
|
|
$.fn.nestable = function(params)
|
||
|
|
{
|
||
|
|
var lists = this,
|
||
|
|
retval = this;
|
||
|
|
|
||
|
|
lists.each(function()
|
||
|
|
{
|
||
|
|
var plugin = $(this).data("nestable");
|
||
|
|
|
||
|
|
if (!plugin) {
|
||
|
|
$(this).data("nestable", new Plugin(this, params));
|
||
|
|
$(this).data("nestable-id", new Date().getTime());
|
||
|
|
} else {
|
||
|
|
if (typeof params === 'string' && typeof plugin[params] === 'function') {
|
||
|
|
retval = plugin[params]();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
});
|
||
|
|
|
||
|
|
return retval || lists;
|
||
|
|
};
|
||
|
|
|
||
|
|
})(window.jQuery || window.Zepto, window, document);
|