[7304c7f] | 1 | /*!
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| 2 | * Nestable jQuery Plugin - Copyright (c) 2012 David Bushell - http://dbushell.com/
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| 3 | * Dual-licensed under the BSD or MIT licenses
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| 4 | */
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| 5 | ;(function($, window, document, undefined)
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| 6 | {
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| 7 | var hasTouch = 'ontouchstart' in document;
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| 8 |
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| 9 | /**
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| 10 | * Detect CSS pointer-events property
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| 11 | * events are normally disabled on the dragging element to avoid conflicts
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| 12 | * https://github.com/ausi/Feature-detection-technique-for-pointer-events/blob/master/modernizr-pointerevents.js
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| 13 | */
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| 14 | var hasPointerEvents = (function()
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| 15 | {
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| 16 | var el = document.createElement('div'),
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| 17 | docEl = document.documentElement;
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| 18 | if (!('pointerEvents' in el.style)) {
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| 19 | return false;
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| 20 | }
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| 21 | el.style.pointerEvents = 'auto';
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| 22 | el.style.pointerEvents = 'x';
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| 23 | docEl.appendChild(el);
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| 24 | var supports = window.getComputedStyle && window.getComputedStyle(el, '').pointerEvents === 'auto';
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| 25 | docEl.removeChild(el);
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| 26 | return !!supports;
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| 27 | })();
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| 28 |
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| 29 | var defaults = {
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| 30 | listNodeName : 'ol',
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| 31 | itemNodeName : 'li',
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| 32 | rootClass : 'dd',
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| 33 | listClass : 'dd-list',
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| 34 | itemClass : 'dd-item',
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| 35 | dragClass : 'dd-dragel',
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| 36 | handleClass : 'dd-handle',
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| 37 | collapsedClass : 'dd-collapsed',
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| 38 | placeClass : 'dd-placeholder',
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| 39 | noDragClass : 'dd-nodrag',
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| 40 | emptyClass : 'dd-empty',
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| 41 | expandBtnHTML : '<button data-action="expand" type="button">Expand</button>',
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| 42 | collapseBtnHTML : '<button data-action="collapse" type="button">Collapse</button>',
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| 43 | group : 0,
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| 44 | maxDepth : 5,
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| 45 | threshold : 20
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| 46 | };
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| 47 |
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| 48 | function Plugin(element, options)
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| 49 | {
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| 50 | this.w = $(document);
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| 51 | this.el = $(element);
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| 52 | this.options = $.extend({}, defaults, options);
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| 53 | this.init();
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| 54 | }
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| 55 |
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| 56 | Plugin.prototype = {
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| 57 |
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| 58 | init: function()
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| 59 | {
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| 60 | var list = this;
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| 61 |
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| 62 | list.reset();
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| 63 |
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| 64 | list.el.data('nestable-group', this.options.group);
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| 65 |
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| 66 | list.placeEl = $('<div class="' + list.options.placeClass + '"/>');
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| 67 |
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| 68 | $.each(this.el.find(list.options.itemNodeName), function(k, el) {
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| 69 | list.setParent($(el));
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| 70 | });
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| 71 |
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| 72 | list.el.on('click', 'button', function(e) {
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| 73 | if (list.dragEl) {
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| 74 | return;
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| 75 | }
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| 76 | var target = $(e.currentTarget),
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| 77 | action = target.data('action'),
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| 78 | item = target.parent(list.options.itemNodeName);
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| 79 | if (action === 'collapse') {
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| 80 | list.collapseItem(item);
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| 81 | }
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| 82 | if (action === 'expand') {
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| 83 | list.expandItem(item);
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| 84 | }
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| 85 | });
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| 86 |
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| 87 | var onStartEvent = function(e)
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| 88 | {
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| 89 | var handle = $(e.target);
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| 90 | if (!handle.hasClass(list.options.handleClass)) {
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| 91 | if (handle.closest('.' + list.options.noDragClass).length) {
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| 92 | return;
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| 93 | }
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| 94 | handle = handle.closest('.' + list.options.handleClass);
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| 95 | }
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| 96 |
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| 97 | if (!handle.length || list.dragEl) {
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| 98 | return;
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| 99 | }
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| 100 |
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| 101 | list.isTouch = /^touch/.test(e.type);
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| 102 | if (list.isTouch && e.touches.length !== 1) {
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| 103 | return;
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| 104 | }
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| 105 |
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| 106 | e.preventDefault();
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| 107 | list.dragStart(e.touches ? e.touches[0] : e);
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| 108 | };
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| 109 |
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| 110 | var onMoveEvent = function(e)
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| 111 | {
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| 112 | if (list.dragEl) {
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| 113 | e.preventDefault();
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| 114 | list.dragMove(e.touches ? e.touches[0] : e);
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| 115 | }
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| 116 | };
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| 117 |
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| 118 | var onEndEvent = function(e)
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| 119 | {
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| 120 | if (list.dragEl) {
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| 121 | e.preventDefault();
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| 122 | list.dragStop(e.touches ? e.touches[0] : e);
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| 123 | }
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| 124 | };
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| 125 |
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| 126 | if (hasTouch) {
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| 127 | list.el[0].addEventListener('touchstart', onStartEvent, false);
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| 128 | window.addEventListener('touchmove', onMoveEvent, false);
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| 129 | window.addEventListener('touchend', onEndEvent, false);
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| 130 | window.addEventListener('touchcancel', onEndEvent, false);
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| 131 | }
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| 132 |
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| 133 | list.el.on('mousedown', onStartEvent);
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| 134 | list.w.on('mousemove', onMoveEvent);
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| 135 | list.w.on('mouseup', onEndEvent);
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| 136 |
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| 137 | },
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| 138 |
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| 139 | serialize: function()
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| 140 | {
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| 141 | var data,
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| 142 | depth = 0,
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| 143 | list = this;
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| 144 | step = function(level, depth)
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| 145 | {
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| 146 | var array = [ ],
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| 147 | items = level.children(list.options.itemNodeName);
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| 148 | items.each(function()
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| 149 | {
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| 150 | var li = $(this),
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| 151 | item = $.extend({}, li.data()),
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| 152 | sub = li.children(list.options.listNodeName);
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| 153 | if (sub.length) {
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| 154 | item.children = step(sub, depth + 1);
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| 155 | }
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| 156 | array.push(item);
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| 157 | });
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| 158 | return array;
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| 159 | };
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| 160 | data = step(list.el.find(list.options.listNodeName).first(), depth);
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| 161 | return data;
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| 162 | },
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| 163 |
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| 164 | serialise: function()
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| 165 | {
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| 166 | return this.serialize();
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| 167 | },
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| 168 |
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| 169 | reset: function()
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| 170 | {
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| 171 | this.mouse = {
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| 172 | offsetX : 0,
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| 173 | offsetY : 0,
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| 174 | startX : 0,
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| 175 | startY : 0,
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| 176 | lastX : 0,
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| 177 | lastY : 0,
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| 178 | nowX : 0,
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| 179 | nowY : 0,
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| 180 | distX : 0,
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| 181 | distY : 0,
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| 182 | dirAx : 0,
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| 183 | dirX : 0,
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| 184 | dirY : 0,
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| 185 | lastDirX : 0,
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| 186 | lastDirY : 0,
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| 187 | distAxX : 0,
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| 188 | distAxY : 0
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| 189 | };
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| 190 | this.isTouch = false;
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| 191 | this.moving = false;
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| 192 | this.dragEl = null;
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| 193 | this.dragRootEl = null;
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| 194 | this.dragDepth = 0;
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| 195 | this.hasNewRoot = false;
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| 196 | this.pointEl = null;
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| 197 | },
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| 198 |
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| 199 | expandItem: function(li)
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| 200 | {
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| 201 | li.removeClass(this.options.collapsedClass);
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| 202 | li.children('[data-action="expand"]').hide();
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| 203 | li.children('[data-action="collapse"]').show();
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| 204 | li.children(this.options.listNodeName).show();
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| 205 | },
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| 206 |
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| 207 | collapseItem: function(li)
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| 208 | {
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| 209 | var lists = li.children(this.options.listNodeName);
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| 210 | if (lists.length) {
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| 211 | li.addClass(this.options.collapsedClass);
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| 212 | li.children('[data-action="collapse"]').hide();
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| 213 | li.children('[data-action="expand"]').show();
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| 214 | li.children(this.options.listNodeName).hide();
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| 215 | }
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| 216 | },
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| 217 |
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| 218 | expandAll: function()
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| 219 | {
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| 220 | var list = this;
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| 221 | list.el.find(list.options.itemNodeName).each(function() {
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| 222 | list.expandItem($(this));
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| 223 | });
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| 224 | },
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| 225 |
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| 226 | collapseAll: function()
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| 227 | {
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| 228 | var list = this;
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| 229 | list.el.find(list.options.itemNodeName).each(function() {
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| 230 | list.collapseItem($(this));
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| 231 | });
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| 232 | },
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| 233 |
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| 234 | setParent: function(li)
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| 235 | {
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| 236 | if (li.children(this.options.listNodeName).length) {
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| 237 | li.prepend($(this.options.expandBtnHTML));
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| 238 | li.prepend($(this.options.collapseBtnHTML));
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| 239 | }
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| 240 | li.children('[data-action="expand"]').hide();
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| 241 | },
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| 242 |
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| 243 | unsetParent: function(li)
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| 244 | {
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| 245 | li.removeClass(this.options.collapsedClass);
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| 246 | li.children('[data-action]').remove();
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| 247 | li.children(this.options.listNodeName).remove();
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| 248 | },
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| 249 |
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| 250 | dragStart: function(e)
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| 251 | {
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| 252 | var mouse = this.mouse,
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| 253 | target = $(e.target),
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| 254 | dragItem = target.closest(this.options.itemNodeName);
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| 255 |
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| 256 | this.placeEl.css('height', dragItem.height());
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| 257 |
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| 258 | mouse.offsetX = e.offsetX !== undefined ? e.offsetX : e.pageX - target.offset().left;
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| 259 | mouse.offsetY = e.offsetY !== undefined ? e.offsetY : e.pageY - target.offset().top;
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| 260 | mouse.startX = mouse.lastX = e.pageX;
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| 261 | mouse.startY = mouse.lastY = e.pageY;
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| 262 |
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| 263 | this.dragRootEl = this.el;
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| 264 |
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| 265 | this.dragEl = $(document.createElement(this.options.listNodeName)).addClass(this.options.listClass + ' ' + this.options.dragClass);
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| 266 | this.dragEl.css('width', dragItem.width());
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| 267 |
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| 268 | dragItem.after(this.placeEl);
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| 269 | dragItem[0].parentNode.removeChild(dragItem[0]);
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| 270 | dragItem.appendTo(this.dragEl);
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| 271 |
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| 272 | $(document.body).append(this.dragEl);
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| 273 | this.dragEl.css({
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| 274 | 'left' : e.pageX - mouse.offsetX,
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| 275 | 'top' : e.pageY - mouse.offsetY
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| 276 | });
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| 277 | // total depth of dragging item
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| 278 | var i, depth,
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| 279 | items = this.dragEl.find(this.options.itemNodeName);
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| 280 | for (i = 0; i < items.length; i++) {
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| 281 | depth = $(items[i]).parents(this.options.listNodeName).length;
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| 282 | if (depth > this.dragDepth) {
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| 283 | this.dragDepth = depth;
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| 284 | }
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| 285 | }
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| 286 | },
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| 287 |
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| 288 | dragStop: function(e)
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| 289 | {
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| 290 | var el = this.dragEl.children(this.options.itemNodeName).first();
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| 291 | el[0].parentNode.removeChild(el[0]);
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| 292 | this.placeEl.replaceWith(el);
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| 293 |
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| 294 | this.dragEl.remove();
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| 295 | this.el.trigger('change');
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| 296 | if (this.hasNewRoot) {
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| 297 | this.dragRootEl.trigger('change');
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| 298 | }
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| 299 | this.reset();
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| 300 | },
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| 301 |
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| 302 | dragMove: function(e)
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| 303 | {
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| 304 | var list, parent, prev, next, depth,
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| 305 | opt = this.options,
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| 306 | mouse = this.mouse;
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| 307 |
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| 308 | this.dragEl.css({
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| 309 | 'left' : e.pageX - mouse.offsetX,
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| 310 | 'top' : e.pageY - mouse.offsetY
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| 311 | });
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| 312 |
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| 313 | // mouse position last events
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| 314 | mouse.lastX = mouse.nowX;
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| 315 | mouse.lastY = mouse.nowY;
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| 316 | // mouse position this events
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| 317 | mouse.nowX = e.pageX;
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| 318 | mouse.nowY = e.pageY;
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| 319 | // distance mouse moved between events
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| 320 | mouse.distX = mouse.nowX - mouse.lastX;
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| 321 | mouse.distY = mouse.nowY - mouse.lastY;
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| 322 | // direction mouse was moving
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| 323 | mouse.lastDirX = mouse.dirX;
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| 324 | mouse.lastDirY = mouse.dirY;
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| 325 | // direction mouse is now moving (on both axis)
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| 326 | mouse.dirX = mouse.distX === 0 ? 0 : mouse.distX > 0 ? 1 : -1;
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| 327 | mouse.dirY = mouse.distY === 0 ? 0 : mouse.distY > 0 ? 1 : -1;
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| 328 | // axis mouse is now moving on
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| 329 | var newAx = Math.abs(mouse.distX) > Math.abs(mouse.distY) ? 1 : 0;
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| 330 |
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| 331 | // do nothing on first move
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| 332 | if (!mouse.moving) {
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| 333 | mouse.dirAx = newAx;
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| 334 | mouse.moving = true;
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| 335 | return;
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| 336 | }
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| 337 |
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| 338 | // calc distance moved on this axis (and direction)
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| 339 | if (mouse.dirAx !== newAx) {
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| 340 | mouse.distAxX = 0;
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| 341 | mouse.distAxY = 0;
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| 342 | } else {
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| 343 | mouse.distAxX += Math.abs(mouse.distX);
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| 344 | if (mouse.dirX !== 0 && mouse.dirX !== mouse.lastDirX) {
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| 345 | mouse.distAxX = 0;
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| 346 | }
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| 347 | mouse.distAxY += Math.abs(mouse.distY);
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| 348 | if (mouse.dirY !== 0 && mouse.dirY !== mouse.lastDirY) {
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| 349 | mouse.distAxY = 0;
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| 350 | }
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| 351 | }
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| 352 | mouse.dirAx = newAx;
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| 353 |
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| 354 | /**
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| 355 | * move horizontal
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| 356 | */
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| 357 | if (mouse.dirAx && mouse.distAxX >= opt.threshold) {
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| 358 | // reset move distance on x-axis for new phase
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| 359 | mouse.distAxX = 0;
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| 360 | prev = this.placeEl.prev(opt.itemNodeName);
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| 361 | // increase horizontal level if previous sibling exists and is not collapsed
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| 362 | if (mouse.distX > 0 && prev.length && !prev.hasClass(opt.collapsedClass)) {
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| 363 | // cannot increase level when item above is collapsed
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| 364 | list = prev.find(opt.listNodeName).last();
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| 365 | // check if depth limit has reached
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| 366 | depth = this.placeEl.parents(opt.listNodeName).length;
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| 367 | if (depth + this.dragDepth <= opt.maxDepth) {
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| 368 | // create new sub-level if one doesn't exist
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| 369 | if (!list.length) {
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| 370 | list = $('<' + opt.listNodeName + '/>').addClass(opt.listClass);
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| 371 | list.append(this.placeEl);
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| 372 | prev.append(list);
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| 373 | this.setParent(prev);
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| 374 | } else {
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| 375 | // else append to next level up
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| 376 | list = prev.children(opt.listNodeName).last();
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| 377 | list.append(this.placeEl);
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| 378 | }
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| 379 | }
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| 380 | }
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| 381 | // decrease horizontal level
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| 382 | if (mouse.distX < 0) {
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| 383 | // we can't decrease a level if an item preceeds the current one
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| 384 | next = this.placeEl.next(opt.itemNodeName);
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| 385 | if (!next.length) {
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| 386 | parent = this.placeEl.parent();
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| 387 | this.placeEl.closest(opt.itemNodeName).after(this.placeEl);
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| 388 | if (!parent.children().length) {
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| 389 | this.unsetParent(parent.parent());
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| 390 | }
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| 391 | }
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| 392 | }
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| 393 | }
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| 394 |
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| 395 | var isEmpty = false;
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| 396 |
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| 397 | // find list item under cursor
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| 398 | if (!hasPointerEvents) {
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| 399 | this.dragEl[0].style.visibility = 'hidden';
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| 400 | }
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| 401 | this.pointEl = $(document.elementFromPoint(e.pageX - document.body.scrollLeft, e.pageY - (window.pageYOffset || document.documentElement.scrollTop)));
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| 402 | if (!hasPointerEvents) {
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| 403 | this.dragEl[0].style.visibility = 'visible';
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| 404 | }
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| 405 | if (this.pointEl.hasClass(opt.handleClass)) {
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| 406 | this.pointEl = this.pointEl.parent(opt.itemNodeName);
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| 407 | }
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| 408 | if (this.pointEl.hasClass(opt.emptyClass)) {
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| 409 | isEmpty = true;
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| 410 | }
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| 411 | else if (!this.pointEl.length || !this.pointEl.hasClass(opt.itemClass)) {
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| 412 | return;
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| 413 | }
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| 414 |
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| 415 | // find parent list of item under cursor
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| 416 | var pointElRoot = this.pointEl.closest('.' + opt.rootClass),
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| 417 | isNewRoot = this.dragRootEl.data('nestable-id') !== pointElRoot.data('nestable-id');
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| 418 |
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| 419 | /**
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| 420 | * move vertical
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| 421 | */
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| 422 | if (!mouse.dirAx || isNewRoot || isEmpty) {
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| 423 | // check if groups match if dragging over new root
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| 424 | if (isNewRoot && opt.group !== pointElRoot.data('nestable-group')) {
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| 425 | return;
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| 426 | }
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| 427 | // check depth limit
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| 428 | depth = this.dragDepth - 1 + this.pointEl.parents(opt.listNodeName).length;
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| 429 | if (depth > opt.maxDepth) {
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| 430 | return;
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| 431 | }
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| 432 | var before = e.pageY < (this.pointEl.offset().top + this.pointEl.height() / 2);
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| 433 | parent = this.placeEl.parent();
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| 434 | // if empty create new list to replace empty placeholder
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| 435 | if (isEmpty) {
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| 436 | list = $(document.createElement(opt.listNodeName)).addClass(opt.listClass);
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| 437 | list.append(this.placeEl);
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| 438 | this.pointEl.replaceWith(list);
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| 439 | }
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| 440 | else if (before) {
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| 441 | this.pointEl.before(this.placeEl);
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| 442 | }
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| 443 | else {
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---|
| 444 | this.pointEl.after(this.placeEl);
|
---|
| 445 | }
|
---|
| 446 | if (!parent.children().length) {
|
---|
| 447 | this.unsetParent(parent.parent());
|
---|
| 448 | }
|
---|
| 449 | if (!this.dragRootEl.find(opt.itemNodeName).length) {
|
---|
| 450 | this.dragRootEl.append('<div class="' + opt.emptyClass + '"/>');
|
---|
| 451 | }
|
---|
| 452 | // parent root list has changed
|
---|
| 453 | if (isNewRoot) {
|
---|
| 454 | this.dragRootEl = pointElRoot;
|
---|
| 455 | this.hasNewRoot = this.el[0] !== this.dragRootEl[0];
|
---|
| 456 | }
|
---|
| 457 | }
|
---|
| 458 | }
|
---|
| 459 |
|
---|
| 460 | };
|
---|
| 461 |
|
---|
| 462 | $.fn.nestable = function(params)
|
---|
| 463 | {
|
---|
| 464 | var lists = this,
|
---|
| 465 | retval = this;
|
---|
| 466 |
|
---|
| 467 | lists.each(function()
|
---|
| 468 | {
|
---|
| 469 | var plugin = $(this).data("nestable");
|
---|
| 470 |
|
---|
| 471 | if (!plugin) {
|
---|
| 472 | $(this).data("nestable", new Plugin(this, params));
|
---|
| 473 | $(this).data("nestable-id", new Date().getTime());
|
---|
| 474 | } else {
|
---|
| 475 | if (typeof params === 'string' && typeof plugin[params] === 'function') {
|
---|
| 476 | retval = plugin[params]();
|
---|
| 477 | }
|
---|
| 478 | }
|
---|
| 479 | });
|
---|
| 480 |
|
---|
| 481 | return retval || lists;
|
---|
| 482 | };
|
---|
| 483 |
|
---|
| 484 | })(window.jQuery || window.Zepto, window, document);
|
---|