Details | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1 | espaco | 1 | /*! |
| 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 window; |
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| 8 | |||
| 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 | |||
| 29 | var eStart = hasTouch ? 'touchstart' : 'mousedown', |
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| 30 | eMove = hasTouch ? 'touchmove' : 'mousemove', |
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| 31 | eEnd = hasTouch ? 'touchend' : 'mouseup'; |
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| 32 | eCancel = hasTouch ? 'touchcancel' : 'mouseup'; |
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| 33 | |||
| 34 | var defaults = { |
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| 35 | listNodeName : 'ol', |
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| 36 | itemNodeName : 'li', |
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| 37 | rootClass : 'dd', |
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| 38 | listClass : 'dd-list', |
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| 39 | itemClass : 'dd-item', |
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| 40 | dragClass : 'dd-dragel', |
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| 41 | handleClass : 'dd-handle', |
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| 42 | collapsedClass : 'dd-collapsed', |
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| 43 | placeClass : 'dd-placeholder', |
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| 44 | noDragClass : 'dd-nodrag', |
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| 45 | emptyClass : 'dd-empty', |
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| 46 | expandBtnHTML : '<button data-action="expand" type="button">Expand</button>', |
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| 47 | collapseBtnHTML : '<button data-action="collapse" type="button">Collapse</button>', |
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| 48 | group : 0, |
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| 49 | maxDepth : 5, |
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| 50 | threshold : 20, |
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| 51 | |||
| 52 | //method for call when an item has been successfully dropped |
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| 53 | //method has 1 argument in which sends an object containing all |
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| 54 | //necessary details |
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| 55 | dropCallback : null |
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| 56 | }; |
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| 57 | |||
| 58 | function Plugin(element, options) |
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| 59 | { |
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| 60 | this.w = $(window); |
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| 61 | this.el = $(element); |
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| 62 | this.options = $.extend({}, defaults, options); |
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| 63 | this.init(); |
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| 64 | } |
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| 65 | |||
| 66 | Plugin.prototype = { |
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| 67 | |||
| 68 | init: function() |
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| 69 | { |
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| 70 | var list = this; |
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| 71 | |||
| 72 | list.reset(); |
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| 73 | |||
| 74 | list.el.data('nestable-group', this.options.group); |
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| 75 | |||
| 76 | list.placeEl = $('<div class="' + list.options.placeClass + '"/>'); |
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| 77 | |||
| 78 | $.each(this.el.find(list.options.itemNodeName), function(k, el) { |
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| 79 | list.setParent($(el)); |
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| 80 | }); |
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| 81 | |||
| 82 | list.el.on('click', 'button', function(e) { |
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| 83 | if (list.dragEl || (!hasTouch && e.button !== 0)) { |
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| 84 | return; |
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| 85 | } |
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| 86 | var target = $(e.currentTarget), |
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| 87 | action = target.data('action'), |
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| 88 | item = target.parent(list.options.itemNodeName); |
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| 89 | if (action === 'collapse') { |
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| 90 | list.collapseItem(item); |
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| 91 | } |
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| 92 | if (action === 'expand') { |
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| 93 | list.expandItem(item); |
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| 94 | } |
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| 95 | }); |
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| 96 | |||
| 97 | var onStartEvent = function(e) |
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| 98 | { |
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| 99 | var handle = $(e.target); |
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| 100 | if (!handle.hasClass(list.options.handleClass)) { |
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| 101 | if (handle.closest('.' + list.options.noDragClass).length) { |
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| 102 | return; |
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| 103 | } |
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| 104 | handle = handle.closest('.' + list.options.handleClass); |
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| 105 | } |
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| 106 | if (!handle.length || list.dragEl || (!hasTouch && e.button !== 0) || (hasTouch && e.touches.length !== 1)) { |
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| 107 | return; |
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| 108 | } |
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| 109 | e.preventDefault(); |
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| 110 | list.dragStart(hasTouch ? e.touches[0] : e); |
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| 111 | }; |
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| 112 | |||
| 113 | var onMoveEvent = function(e) |
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| 114 | { |
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| 115 | if (list.dragEl) { |
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| 116 | e.preventDefault(); |
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| 117 | list.dragMove(hasTouch ? e.touches[0] : e); |
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| 118 | } |
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| 119 | }; |
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| 120 | |||
| 121 | var onEndEvent = function(e) |
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| 122 | { |
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| 123 | if (list.dragEl) { |
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| 124 | e.preventDefault(); |
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| 125 | list.dragStop(hasTouch ? e.touches[0] : e); |
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| 126 | } |
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| 127 | }; |
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| 128 | |||
| 129 | if (hasTouch) { |
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| 130 | list.el[0].addEventListener(eStart, onStartEvent, false); |
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| 131 | window.addEventListener(eMove, onMoveEvent, false); |
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| 132 | window.addEventListener(eEnd, onEndEvent, false); |
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| 133 | window.addEventListener(eCancel, onEndEvent, false); |
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| 134 | } else { |
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| 135 | list.el.on(eStart, onStartEvent); |
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| 136 | list.w.on(eMove, onMoveEvent); |
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| 137 | list.w.on(eEnd, onEndEvent); |
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| 138 | } |
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| 139 | |||
| 140 | }, |
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| 141 | |||
| 142 | serialize: function() |
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| 143 | { |
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| 144 | var data, |
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| 145 | depth = 0, |
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| 146 | list = this; |
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| 147 | step = function(level, depth) |
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| 148 | { |
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| 149 | var array = [ ], |
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| 150 | items = level.children(list.options.itemNodeName); |
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| 151 | items.each(function() |
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| 152 | { |
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| 153 | var li = $(this), |
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| 154 | item = $.extend({}, li.data()), |
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| 155 | sub = li.children(list.options.listNodeName); |
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| 156 | if (sub.length) { |
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| 157 | item.children = step(sub, depth + 1); |
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| 158 | } |
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| 159 | array.push(item); |
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| 160 | }); |
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| 161 | return array; |
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| 162 | }; |
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| 163 | data = step(list.el.find(list.options.listNodeName).first(), depth); |
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| 164 | return data; |
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| 165 | }, |
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| 166 | |||
| 167 | serialise: function() |
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| 168 | { |
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| 169 | return this.serialize(); |
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| 170 | }, |
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| 171 | |||
| 172 | reset: function() |
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| 173 | { |
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| 174 | this.mouse = { |
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| 175 | offsetX : 0, |
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| 176 | offsetY : 0, |
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| 177 | startX : 0, |
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| 178 | startY : 0, |
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| 179 | lastX : 0, |
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| 180 | lastY : 0, |
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| 181 | nowX : 0, |
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| 182 | nowY : 0, |
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| 183 | distX : 0, |
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| 184 | distY : 0, |
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| 185 | dirAx : 0, |
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| 186 | dirX : 0, |
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| 187 | dirY : 0, |
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| 188 | lastDirX : 0, |
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| 189 | lastDirY : 0, |
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| 190 | distAxX : 0, |
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| 191 | distAxY : 0 |
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| 192 | }; |
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| 193 | this.moving = false; |
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| 194 | this.dragEl = null; |
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| 195 | this.dragRootEl = null; |
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| 196 | this.dragDepth = 0; |
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| 197 | this.hasNewRoot = false; |
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| 198 | this.pointEl = null; |
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| 199 | this.sourceRoot = null; |
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| 200 | }, |
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| 201 | |||
| 202 | expandItem: function(li) |
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| 203 | { |
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| 204 | li.removeClass(this.options.collapsedClass); |
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| 205 | li.children('[data-action="expand"]').hide(); |
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| 206 | li.children('[data-action="collapse"]').show(); |
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| 207 | li.children(this.options.listNodeName).show(); |
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| 208 | }, |
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| 209 | |||
| 210 | collapseItem: function(li) |
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| 211 | { |
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| 212 | var lists = li.children(this.options.listNodeName); |
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| 213 | if (lists.length) { |
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| 214 | li.addClass(this.options.collapsedClass); |
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| 215 | li.children('[data-action="collapse"]').hide(); |
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| 216 | li.children('[data-action="expand"]').show(); |
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| 217 | li.children(this.options.listNodeName).hide(); |
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| 218 | } |
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| 219 | }, |
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| 220 | |||
| 221 | expandAll: function() |
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| 222 | { |
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| 223 | var list = this; |
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| 224 | list.el.find(list.options.itemNodeName).each(function() { |
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| 225 | list.expandItem($(this)); |
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| 226 | }); |
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| 227 | }, |
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| 228 | |||
| 229 | collapseAll: function() |
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| 230 | { |
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| 231 | var list = this; |
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| 232 | list.el.find(list.options.itemNodeName).each(function() { |
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| 233 | list.collapseItem($(this)); |
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| 234 | }); |
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| 235 | }, |
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| 236 | |||
| 237 | setParent: function(li) |
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| 238 | { |
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| 239 | if (li.children(this.options.listNodeName).length) { |
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| 240 | li.prepend($(this.options.expandBtnHTML)); |
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| 241 | li.prepend($(this.options.collapseBtnHTML)); |
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| 242 | } |
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| 243 | li.children('[data-action="expand"]').hide(); |
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| 244 | }, |
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| 245 | |||
| 246 | unsetParent: function(li) |
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| 247 | { |
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| 248 | li.removeClass(this.options.collapsedClass); |
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| 249 | li.children('[data-action]').remove(); |
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| 250 | li.children(this.options.listNodeName).remove(); |
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| 251 | }, |
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| 252 | |||
| 253 | dragStart: function(e) |
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| 254 | { |
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| 255 | var mouse = this.mouse, |
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| 256 | target = $(e.target), |
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| 257 | dragItem = target.closest(this.options.itemNodeName); |
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| 258 | |||
| 259 | this.sourceRoot = target.closest('.' + this.options.rootClass); |
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| 260 | this.placeEl.css('height', dragItem.height()); |
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| 261 | |||
| 262 | mouse.offsetX = e.offsetX !== undefined ? e.offsetX : e.pageX - target.offset().left; |
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| 263 | mouse.offsetY = e.offsetY !== undefined ? e.offsetY : e.pageY - target.offset().top; |
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| 264 | mouse.startX = mouse.lastX = e.pageX; |
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| 265 | mouse.startY = mouse.lastY = e.pageY; |
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| 266 | |||
| 267 | this.dragRootEl = this.el; |
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| 268 | |||
| 269 | this.dragEl = $(document.createElement(this.options.listNodeName)).addClass(this.options.listClass + ' ' + this.options.dragClass); |
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| 270 | this.dragEl.css('width', dragItem.width()); |
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| 271 | |||
| 272 | // fix for zepto.js |
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| 273 | //dragItem.after(this.placeEl).detach().appendTo(this.dragEl); |
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| 274 | dragItem.after(this.placeEl); |
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| 275 | dragItem[0].parentNode.removeChild(dragItem[0]); |
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| 276 | dragItem.appendTo(this.dragEl); |
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| 277 | |||
| 278 | $(document.body).append(this.dragEl); |
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| 279 | this.dragEl.css({ |
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| 280 | 'left' : e.pageX - mouse.offsetX, |
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| 281 | 'top' : e.pageY - mouse.offsetY |
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| 282 | }); |
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| 283 | // total depth of dragging item |
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| 284 | var i, depth, |
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| 285 | items = this.dragEl.find(this.options.itemNodeName); |
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| 286 | for (i = 0; i < items.length; i++) { |
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| 287 | depth = $(items[i]).parents(this.options.listNodeName).length; |
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| 288 | if (depth > this.dragDepth) { |
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| 289 | this.dragDepth = depth; |
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| 290 | } |
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| 291 | } |
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| 292 | }, |
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| 293 | |||
| 294 | dragStop: function(e) |
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| 295 | { |
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| 296 | // fix for zepto.js |
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| 297 | //this.placeEl.replaceWith(this.dragEl.children(this.options.itemNodeName + ':first').detach()); |
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| 298 | var el = this.dragEl.children(this.options.itemNodeName).first(); |
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| 299 | el[0].parentNode.removeChild(el[0]); |
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| 300 | this.placeEl.replaceWith(el); |
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| 301 | |||
| 302 | this.dragEl.remove(); |
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| 303 | this.el.trigger('change'); |
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| 304 | |||
| 305 | //Let's find out new parent id |
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| 306 | var parentItem = el.parent().parent(); |
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| 307 | var parentId = null; |
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| 308 | if(parentItem !== null && !parentItem.is('.' + this.options.rootClass)) |
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| 309 | parentId = parentItem.data('id'); |
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| 310 | |||
| 311 | if($.isFunction(this.options.dropCallback)) { |
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| 312 | var details = { |
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| 313 | sourceId : el.data('id'), |
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| 314 | destId : parentId, |
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| 315 | sourceEl : el, |
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| 316 | destParent : parentItem, |
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| 317 | destRoot : el.closest('.' + this.options.rootClass), |
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| 318 | sourceRoot : this.sourceRoot |
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| 319 | }; |
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| 320 | this.options.dropCallback.call(this, details); |
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| 321 | } |
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| 322 | |||
| 323 | if (this.hasNewRoot) { |
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| 324 | this.dragRootEl.trigger('change'); |
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| 325 | } |
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| 326 | this.reset(); |
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| 327 | }, |
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| 328 | |||
| 329 | dragMove: function(e) |
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| 330 | { |
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| 331 | var list, parent, prev, next, depth, |
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| 332 | opt = this.options, |
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| 333 | mouse = this.mouse; |
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| 334 | |||
| 335 | this.dragEl.css({ |
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| 336 | 'left' : e.pageX - mouse.offsetX, |
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| 337 | 'top' : e.pageY - mouse.offsetY |
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| 338 | }); |
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| 339 | |||
| 340 | // mouse position last events |
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| 341 | mouse.lastX = mouse.nowX; |
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| 342 | mouse.lastY = mouse.nowY; |
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| 343 | // mouse position this events |
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| 344 | mouse.nowX = e.pageX; |
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| 345 | mouse.nowY = e.pageY; |
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| 346 | // distance mouse moved between events |
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| 347 | mouse.distX = mouse.nowX - mouse.lastX; |
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| 348 | mouse.distY = mouse.nowY - mouse.lastY; |
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| 349 | // direction mouse was moving |
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| 350 | mouse.lastDirX = mouse.dirX; |
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| 351 | mouse.lastDirY = mouse.dirY; |
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| 352 | // direction mouse is now moving (on both axis) |
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| 353 | mouse.dirX = mouse.distX === 0 ? 0 : mouse.distX > 0 ? 1 : -1; |
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| 354 | mouse.dirY = mouse.distY === 0 ? 0 : mouse.distY > 0 ? 1 : -1; |
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| 355 | // axis mouse is now moving on |
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| 356 | var newAx = Math.abs(mouse.distX) > Math.abs(mouse.distY) ? 1 : 0; |
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| 357 | |||
| 358 | // do nothing on first move |
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| 359 | if (!mouse.moving) { |
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| 360 | mouse.dirAx = newAx; |
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| 361 | mouse.moving = true; |
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| 362 | return; |
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| 363 | } |
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| 364 | |||
| 365 | // calc distance moved on this axis (and direction) |
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| 366 | if (mouse.dirAx !== newAx) { |
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| 367 | mouse.distAxX = 0; |
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| 368 | mouse.distAxY = 0; |
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| 369 | } else { |
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| 370 | mouse.distAxX += Math.abs(mouse.distX); |
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| 371 | if (mouse.dirX !== 0 && mouse.dirX !== mouse.lastDirX) { |
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| 372 | mouse.distAxX = 0; |
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| 373 | } |
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| 374 | mouse.distAxY += Math.abs(mouse.distY); |
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| 375 | if (mouse.dirY !== 0 && mouse.dirY !== mouse.lastDirY) { |
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| 376 | mouse.distAxY = 0; |
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| 377 | } |
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| 378 | } |
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| 379 | mouse.dirAx = newAx; |
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| 380 | |||
| 381 | /** |
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| 382 | * move horizontal |
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| 383 | */ |
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| 384 | if (mouse.dirAx && mouse.distAxX >= opt.threshold) { |
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| 385 | // reset move distance on x-axis for new phase |
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| 386 | mouse.distAxX = 0; |
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| 387 | prev = this.placeEl.prev(opt.itemNodeName); |
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| 388 | // increase horizontal level if previous sibling exists and is not collapsed |
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| 389 | if (mouse.distX > 0 && prev.length && !prev.hasClass(opt.collapsedClass)) { |
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| 390 | // cannot increase level when item above is collapsed |
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| 391 | list = prev.find(opt.listNodeName).last(); |
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| 392 | // check if depth limit has reached |
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| 393 | depth = this.placeEl.parents(opt.listNodeName).length; |
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| 394 | if (depth + this.dragDepth <= opt.maxDepth) { |
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| 395 | // create new sub-level if one doesn't exist |
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| 396 | if (!list.length) { |
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| 397 | list = $('<' + opt.listNodeName + '/>').addClass(opt.listClass); |
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| 398 | list.append(this.placeEl); |
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| 399 | prev.append(list); |
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| 400 | this.setParent(prev); |
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| 401 | } else { |
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| 402 | // else append to next level up |
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| 403 | list = prev.children(opt.listNodeName).last(); |
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| 404 | list.append(this.placeEl); |
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| 405 | } |
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| 406 | } |
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| 407 | } |
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| 408 | // decrease horizontal level |
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| 409 | if (mouse.distX < 0) { |
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| 410 | // we can't decrease a level if an item preceeds the current one |
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| 411 | next = this.placeEl.next(opt.itemNodeName); |
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| 412 | if (!next.length) { |
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| 413 | parent = this.placeEl.parent(); |
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| 414 | this.placeEl.closest(opt.itemNodeName).after(this.placeEl); |
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| 415 | if (!parent.children().length) { |
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| 416 | this.unsetParent(parent.parent()); |
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| 417 | } |
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| 418 | } |
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| 419 | } |
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| 420 | } |
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| 421 | |||
| 422 | var isEmpty = false; |
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| 423 | |||
| 424 | // find list item under cursor |
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| 425 | if (!hasPointerEvents) { |
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| 426 | this.dragEl[0].style.visibility = 'hidden'; |
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| 427 | } |
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| 428 | this.pointEl = $(document.elementFromPoint(e.pageX - document.body.scrollLeft, e.pageY - (window.pageYOffset || document.documentElement.scrollTop))); |
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| 429 | if (!hasPointerEvents) { |
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| 430 | this.dragEl[0].style.visibility = 'visible'; |
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| 431 | } |
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| 432 | if (this.pointEl.hasClass(opt.handleClass)) { |
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| 433 | this.pointEl = this.pointEl.parent(opt.itemNodeName); |
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| 434 | } |
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| 435 | if (this.pointEl.hasClass(opt.emptyClass)) { |
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| 436 | isEmpty = true; |
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| 437 | } |
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| 438 | else if (!this.pointEl.length || !this.pointEl.hasClass(opt.itemClass)) { |
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| 439 | return; |
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| 440 | } |
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| 441 | |||
| 442 | // find parent list of item under cursor |
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| 443 | var pointElRoot = this.pointEl.closest('.' + opt.rootClass), |
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| 444 | isNewRoot = this.dragRootEl.data('nestable-id') !== pointElRoot.data('nestable-id'); |
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| 445 | |||
| 446 | /** |
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| 447 | * move vertical |
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| 448 | */ |
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| 449 | if (!mouse.dirAx || isNewRoot || isEmpty) { |
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| 450 | // check if groups match if dragging over new root |
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| 451 | if (isNewRoot && opt.group !== pointElRoot.data('nestable-group')) { |
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| 452 | return; |
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| 453 | } |
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| 454 | // check depth limit |
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| 455 | depth = this.dragDepth - 1 + this.pointEl.parents(opt.listNodeName).length; |
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| 456 | if (depth > opt.maxDepth) { |
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| 457 | return; |
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| 458 | } |
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| 459 | var before = e.pageY < (this.pointEl.offset().top + this.pointEl.height() / 2); |
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| 460 | parent = this.placeEl.parent(); |
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| 461 | // if empty create new list to replace empty placeholder |
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| 462 | if (isEmpty) { |
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| 463 | list = $(document.createElement(opt.listNodeName)).addClass(opt.listClass); |
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| 464 | list.append(this.placeEl); |
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| 465 | this.pointEl.replaceWith(list); |
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| 466 | } |
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| 467 | else if (before) { |
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| 468 | this.pointEl.before(this.placeEl); |
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| 469 | } |
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| 470 | else { |
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| 471 | this.pointEl.after(this.placeEl); |
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| 472 | } |
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| 473 | if (!parent.children().length) { |
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| 474 | this.unsetParent(parent.parent()); |
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| 475 | } |
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| 476 | if (!this.dragRootEl.find(opt.itemNodeName).length) { |
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| 477 | this.dragRootEl.append('<div class="' + opt.emptyClass + '"/>'); |
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| 478 | } |
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| 479 | // parent root list has changed |
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| 480 | if (isNewRoot) { |
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| 481 | this.dragRootEl = pointElRoot; |
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| 482 | this.hasNewRoot = this.el[0] !== this.dragRootEl[0]; |
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| 483 | } |
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| 484 | } |
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| 485 | } |
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| 486 | |||
| 487 | }; |
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| 488 | |||
| 489 | $.fn.nestable = function(params) |
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| 490 | { |
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| 491 | var lists = this, |
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| 492 | retval = this; |
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| 493 | |||
| 494 | lists.each(function() |
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| 495 | { |
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| 496 | var plugin = $(this).data("nestable"); |
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| 497 | |||
| 498 | if (!plugin) { |
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| 499 | $(this).data("nestable", new Plugin(this, params)); |
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| 500 | $(this).data("nestable-id", new Date().getTime()); |
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| 501 | } else { |
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| 502 | if (typeof params === 'string' && typeof plugin[params] === 'function') { |
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| 503 | retval = plugin[params](); |
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| 504 | } |
||
| 505 | } |
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| 506 | }); |
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| 507 | |||
| 508 | return retval || lists; |
||
| 509 | }; |
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| 510 | |||
| 511 | })(window.jQuery || window.Zepto, window, document); |