| 提交 | 用户 | 时间 | ||
| 58d006 | 1 | /*! |
| A | 2 | * Nestable jQuery Plugin - Copyright (c) 2012 David Bushell - http://dbushell.com/ |
| 3 | * Dual-licensed under the BSD or MIT licenses | |
| 4 | */ | |
| 5 | ;(function($, window, document, undefined) | |
| 6 | { | |
| 7 | var hasTouch = 'ontouchstart' in document.documentElement; | |
| 8 | ||
| 9 | /** | |
| 10 | * Detect CSS pointer-events property | |
| 11 | * events are normally disabled on the dragging element to avoid conflicts | |
| 12 | * https://github.com/ausi/Feature-detection-technique-for-pointer-events/blob/master/modernizr-pointerevents.js | |
| 13 | */ | |
| 14 | var hasPointerEvents = (function() | |
| 15 | { | |
| 16 | var el = document.createElement('div'), | |
| 17 | docEl = document.documentElement; | |
| 18 | if (!('pointerEvents' in el.style)) { | |
| 19 | return false; | |
| 20 | } | |
| 21 | el.style.pointerEvents = 'auto'; | |
| 22 | el.style.pointerEvents = 'x'; | |
| 23 | docEl.appendChild(el); | |
| 24 | var supports = window.getComputedStyle && window.getComputedStyle(el, '').pointerEvents === 'auto'; | |
| 25 | docEl.removeChild(el); | |
| 26 | return !!supports; | |
| 27 | })(); | |
| 28 | ||
| 29 | var eStart = 'mousedown touchstart MSPointerDown pointerdown',//ACE | |
| 30 | eMove = 'mousemove touchmove MSPointerMove pointermove',//ACE | |
| 31 | eEnd = 'mouseup touchend touchcancel MSPointerUp MSPointerCancel pointerup pointercancel';//ACE | |
| 32 | ||
| 33 | var defaults = { | |
| 34 | listNodeName : 'ol', | |
| 35 | itemNodeName : 'li', | |
| 36 | rootClass : 'dd', | |
| 37 | listClass : 'dd-list', | |
| 38 | itemClass : 'dd-item', | |
| 39 | dragClass : 'dd-dragel', | |
| 40 | handleClass : 'dd-handle', | |
| 41 | collapsedClass : 'dd-collapsed', | |
| 42 | placeClass : 'dd-placeholder', | |
| 43 | noDragClass : 'dd-nodrag', | |
| 44 | emptyClass : 'dd-empty', | |
| 45 | expandBtnHTML : '<button data-action="expand" type="button">Expand</button>', | |
| 46 | collapseBtnHTML : '<button data-action="collapse" type="button">Collapse</button>', | |
| 47 | group : 0, | |
| 48 | maxDepth : 5, | |
| 49 | threshold : 20 | |
| 50 | }; | |
| 51 | ||
| 52 | function Plugin(element, options) | |
| 53 | { | |
| 54 | this.w = $(window); | |
| 55 | this.el = $(element); | |
| 56 | this.options = $.extend({}, defaults, options); | |
| 57 | this.init(); | |
| 58 | } | |
| 59 | ||
| 60 | Plugin.prototype = { | |
| 61 | ||
| 62 | init: function() | |
| 63 | { | |
| 64 | var list = this; | |
| 65 | ||
| 66 | list.reset(); | |
| 67 | ||
| 68 | list.el.data('nestable-group', this.options.group); | |
| 69 | ||
| 70 | list.placeEl = $('<div class="' + list.options.placeClass + '"/>'); | |
| 71 | ||
| 72 | $.each(this.el.find(list.options.itemNodeName), function(k, el) { | |
| 73 | list.setParent($(el)); | |
| 74 | }); | |
| 75 | ||
| 76 | list.el.on('click', 'button', function(e) { | |
| 77 | if (list.dragEl || ('button' in e && e.button !== 0)) { | |
| 78 | return; | |
| 79 | } | |
| 80 | var target = $(e.currentTarget), | |
| 81 | action = target.data('action'), | |
| 82 | item = target.parent(list.options.itemNodeName); | |
| 83 | if (action === 'collapse') { | |
| 84 | list.collapseItem(item); | |
| 85 | } | |
| 86 | if (action === 'expand') { | |
| 87 | list.expandItem(item); | |
| 88 | } | |
| 89 | }); | |
| 90 | ||
| 91 | var onStartEvent = function(e) | |
| 92 | { | |
| 93 | e = e.originalEvent;//ACE | |
| 94 | var handle = $(e.target); | |
| 95 | if (!handle.hasClass(list.options.handleClass)) { | |
| 96 | if (handle.closest('.' + list.options.noDragClass).length) { | |
| 97 | return; | |
| 98 | } | |
| 99 | handle = handle.closest('.' + list.options.handleClass); | |
| 100 | } | |
| 101 | //ACE | |
| 102 | if (!handle.length || list.dragEl || ('button' in e && e.button !== 0) || ('touches' in e && e.touches.length !== 1)) { | |
| 103 | return; | |
| 104 | } | |
| 105 | e.preventDefault(); | |
| 106 | list.dragStart('touches' in e ? e.touches[0] : e);//ACE | |
| 107 | }; | |
| 108 | ||
| 109 | var onMoveEvent = function(e) | |
| 110 | { | |
| 111 | if (list.dragEl) { | |
| 112 | e = e.originalEvent;//ACE | |
| 113 | e.preventDefault(); | |
| 114 | list.dragMove('touches' in e ? e.touches[0] : e);//ACE | |
| 115 | } | |
| 116 | }; | |
| 117 | ||
| 118 | var onEndEvent = function(e) | |
| 119 | { | |
| 120 | if (list.dragEl) { | |
| 121 | e = e.originalEvent;//ACE | |
| 122 | e.preventDefault(); | |
| 123 | list.dragStop('touches' in e ? e.touches[0] : e);//ACE | |
| 124 | } | |
| 125 | }; | |
| 126 | ||
| 127 | //ACE | |
| 128 | /**if (hasTouch) { | |
| 129 | list.el[0].addEventListener(eStart, onStartEvent, false); | |
| 130 | window.addEventListener(eMove, onMoveEvent, false); | |
| 131 | window.addEventListener(eEnd, onEndEvent, false); | |
| 132 | //window.addEventListener(eCancel, onEndEvent, false); | |
| 133 | } else { | |
| 134 | */ | |
| 135 | list.el.on(eStart, onStartEvent); | |
| 136 | list.w.on(eMove, onMoveEvent); | |
| 137 | list.w.on(eEnd, onEndEvent); | |
| 138 | //} | |
| 139 | ||
| 140 | }, | |
| 141 | ||
| 142 | serialize: function() | |
| 143 | { | |
| 144 | var data, | |
| 145 | depth = 0, | |
| 146 | list = this; | |
| 147 | step = function(level, depth) | |
| 148 | { | |
| 149 | var array = [ ], | |
| 150 | items = level.children(list.options.itemNodeName); | |
| 151 | items.each(function() | |
| 152 | { | |
| 153 | var li = $(this), | |
| 154 | item = $.extend({}, li.data()), | |
| 155 | sub = li.children(list.options.listNodeName); | |
| 156 | if (sub.length) { | |
| 157 | item.children = step(sub, depth + 1); | |
| 158 | } | |
| 159 | array.push(item); | |
| 160 | }); | |
| 161 | return array; | |
| 162 | }; | |
| 163 | data = step(list.el.find(list.options.listNodeName).first(), depth); | |
| 164 | return data; | |
| 165 | }, | |
| 166 | ||
| 167 | serialise: function() | |
| 168 | { | |
| 169 | return this.serialize(); | |
| 170 | }, | |
| 171 | ||
| 172 | reset: function() | |
| 173 | { | |
| 174 | this.mouse = { | |
| 175 | offsetX : 0, | |
| 176 | offsetY : 0, | |
| 177 | startX : 0, | |
| 178 | startY : 0, | |
| 179 | lastX : 0, | |
| 180 | lastY : 0, | |
| 181 | nowX : 0, | |
| 182 | nowY : 0, | |
| 183 | distX : 0, | |
| 184 | distY : 0, | |
| 185 | dirAx : 0, | |
| 186 | dirX : 0, | |
| 187 | dirY : 0, | |
| 188 | lastDirX : 0, | |
| 189 | lastDirY : 0, | |
| 190 | distAxX : 0, | |
| 191 | distAxY : 0 | |
| 192 | }; | |
| 193 | this.moving = false; | |
| 194 | this.dragEl = null; | |
| 195 | this.dragRootEl = null; | |
| 196 | this.dragDepth = 0; | |
| 197 | this.hasNewRoot = false; | |
| 198 | this.pointEl = null; | |
| 199 | }, | |
| 200 | ||
| 201 | expandItem: function(li) | |
| 202 | { | |
| 203 | li.removeClass(this.options.collapsedClass); | |
| 204 | li.children('[data-action="expand"]').hide(); | |
| 205 | li.children('[data-action="collapse"]').show(); | |
| 206 | li.children(this.options.listNodeName).show(); | |
| 207 | }, | |
| 208 | ||
| 209 | collapseItem: function(li) | |
| 210 | { | |
| 211 | var lists = li.children(this.options.listNodeName); | |
| 212 | if (lists.length) { | |
| 213 | li.addClass(this.options.collapsedClass); | |
| 214 | li.children('[data-action="collapse"]').hide(); | |
| 215 | li.children('[data-action="expand"]').show(); | |
| 216 | li.children(this.options.listNodeName).hide(); | |
| 217 | } | |
| 218 | }, | |
| 219 | ||
| 220 | expandAll: function() | |
| 221 | { | |
| 222 | var list = this; | |
| 223 | list.el.find(list.options.itemNodeName).each(function() { | |
| 224 | list.expandItem($(this)); | |
| 225 | }); | |
| 226 | }, | |
| 227 | ||
| 228 | collapseAll: function() | |
| 229 | { | |
| 230 | var list = this; | |
| 231 | list.el.find(list.options.itemNodeName).each(function() { | |
| 232 | list.collapseItem($(this)); | |
| 233 | }); | |
| 234 | }, | |
| 235 | ||
| 236 | setParent: function(li) | |
| 237 | { | |
| 238 | if (li.children(this.options.listNodeName).length) { | |
| 239 | li.prepend($(this.options.expandBtnHTML)); | |
| 240 | li.prepend($(this.options.collapseBtnHTML)); | |
| 241 | } | |
| 242 | li.children('[data-action="expand"]').hide(); | |
| 243 | }, | |
| 244 | ||
| 245 | unsetParent: function(li) | |
| 246 | { | |
| 247 | li.removeClass(this.options.collapsedClass); | |
| 248 | li.children('[data-action]').remove(); | |
| 249 | li.children(this.options.listNodeName).remove(); | |
| 250 | }, | |
| 251 | ||
| 252 | dragStart: function(e) | |
| 253 | { | |
| 254 | var mouse = this.mouse, | |
| 255 | target = $(e.target), | |
| 256 | dragItem = target.closest(this.options.itemNodeName); | |
| 257 | ||
| 258 | this.placeEl.css('height', dragItem.height()); | |
| 259 | ||
| 260 | mouse.offsetX = e.offsetX !== undefined ? e.offsetX : e.pageX - target.offset().left; | |
| 261 | mouse.offsetY = e.offsetY !== undefined ? e.offsetY : e.pageY - target.offset().top; | |
| 262 | mouse.startX = mouse.lastX = e.pageX; | |
| 263 | mouse.startY = mouse.lastY = e.pageY; | |
| 264 | ||
| 265 | this.dragRootEl = this.el; | |
| 266 | ||
| 267 | this.dragEl = $(document.createElement(this.options.listNodeName)).addClass(this.options.listClass + ' ' + this.options.dragClass); | |
| 268 | this.dragEl.css('width', dragItem.width()); | |
| 269 | ||
| 270 | // fix for zepto.js | |
| 271 | //dragItem.after(this.placeEl).detach().appendTo(this.dragEl); | |
| 272 | dragItem.after(this.placeEl); | |
| 273 | dragItem[0].parentNode.removeChild(dragItem[0]); | |
| 274 | dragItem.appendTo(this.dragEl); | |
| 275 | ||
| 276 | $(document.body).append(this.dragEl); | |
| 277 | this.dragEl.css({ | |
| 278 | 'left' : e.pageX - mouse.offsetX, | |
| 279 | 'top' : e.pageY - mouse.offsetY | |
| 280 | }); | |
| 281 | // total depth of dragging item | |
| 282 | var i, depth, | |
| 283 | items = this.dragEl.find(this.options.itemNodeName); | |
| 284 | for (i = 0; i < items.length; i++) { | |
| 285 | depth = $(items[i]).parents(this.options.listNodeName).length; | |
| 286 | if (depth > this.dragDepth) { | |
| 287 | this.dragDepth = depth; | |
| 288 | } | |
| 289 | } | |
| 290 | }, | |
| 291 | ||
| 292 | dragStop: function(e) | |
| 293 | { | |
| 294 | // fix for zepto.js | |
| 295 | //this.placeEl.replaceWith(this.dragEl.children(this.options.itemNodeName + ':first').detach()); | |
| 296 | var el = this.dragEl.children(this.options.itemNodeName).first(); | |
| 297 | el[0].parentNode.removeChild(el[0]); | |
| 298 | this.placeEl.replaceWith(el); | |
| 299 | ||
| 300 | this.dragEl.remove(); | |
| 301 | this.el.trigger('change'); | |
| 302 | if (this.hasNewRoot) { | |
| 303 | this.dragRootEl.trigger('change'); | |
| 304 | } | |
| 305 | this.reset(); | |
| 306 | }, | |
| 307 | ||
| 308 | dragMove: function(e) | |
| 309 | { | |
| 310 | var list, parent, prev, next, depth, | |
| 311 | opt = this.options, | |
| 312 | mouse = this.mouse; | |
| 313 | ||
| 314 | this.dragEl.css({ | |
| 315 | 'left' : e.pageX - mouse.offsetX, | |
| 316 | 'top' : e.pageY - mouse.offsetY | |
| 317 | }); | |
| 318 | ||
| 319 | // mouse position last events | |
| 320 | mouse.lastX = mouse.nowX; | |
| 321 | mouse.lastY = mouse.nowY; | |
| 322 | // mouse position this events | |
| 323 | mouse.nowX = e.pageX; | |
| 324 | mouse.nowY = e.pageY; | |
| 325 | // distance mouse moved between events | |
| 326 | mouse.distX = mouse.nowX - mouse.lastX; | |
| 327 | mouse.distY = mouse.nowY - mouse.lastY; | |
| 328 | // direction mouse was moving | |
| 329 | mouse.lastDirX = mouse.dirX; | |
| 330 | mouse.lastDirY = mouse.dirY; | |
| 331 | // direction mouse is now moving (on both axis) | |
| 332 | mouse.dirX = mouse.distX === 0 ? 0 : mouse.distX > 0 ? 1 : -1; | |
| 333 | mouse.dirY = mouse.distY === 0 ? 0 : mouse.distY > 0 ? 1 : -1; | |
| 334 | // axis mouse is now moving on | |
| 335 | var newAx = Math.abs(mouse.distX) > Math.abs(mouse.distY) ? 1 : 0; | |
| 336 | ||
| 337 | // do nothing on first move | |
| 338 | if (!mouse.moving) { | |
| 339 | mouse.dirAx = newAx; | |
| 340 | mouse.moving = true; | |
| 341 | return; | |
| 342 | } | |
| 343 | ||
| 344 | // calc distance moved on this axis (and direction) | |
| 345 | if (mouse.dirAx !== newAx) { | |
| 346 | mouse.distAxX = 0; | |
| 347 | mouse.distAxY = 0; | |
| 348 | } else { | |
| 349 | mouse.distAxX += Math.abs(mouse.distX); | |
| 350 | if (mouse.dirX !== 0 && mouse.dirX !== mouse.lastDirX) { | |
| 351 | mouse.distAxX = 0; | |
| 352 | } | |
| 353 | mouse.distAxY += Math.abs(mouse.distY); | |
| 354 | if (mouse.dirY !== 0 && mouse.dirY !== mouse.lastDirY) { | |
| 355 | mouse.distAxY = 0; | |
| 356 | } | |
| 357 | } | |
| 358 | mouse.dirAx = newAx; | |
| 359 | ||
| 360 | /** | |
| 361 | * move horizontal | |
| 362 | */ | |
| 363 | if (mouse.dirAx && mouse.distAxX >= opt.threshold) { | |
| 364 | // reset move distance on x-axis for new phase | |
| 365 | mouse.distAxX = 0; | |
| 366 | prev = this.placeEl.prev(opt.itemNodeName); | |
| 367 | // increase horizontal level if previous sibling exists and is not collapsed | |
| 368 | if (mouse.distX > 0 && prev.length && !prev.hasClass(opt.collapsedClass)) { | |
| 369 | // cannot increase level when item above is collapsed | |
| 370 | list = prev.find(opt.listNodeName).last(); | |
| 371 | // check if depth limit has reached | |
| 372 | depth = this.placeEl.parents(opt.listNodeName).length; | |
| 373 | if (depth + this.dragDepth <= opt.maxDepth) { | |
| 374 | // create new sub-level if one doesn't exist | |
| 375 | if (!list.length) { | |
| 376 | list = $('<' + opt.listNodeName + '/>').addClass(opt.listClass); | |
| 377 | list.append(this.placeEl); | |
| 378 | prev.append(list); | |
| 379 | this.setParent(prev); | |
| 380 | } else { | |
| 381 | // else append to next level up | |
| 382 | list = prev.children(opt.listNodeName).last(); | |
| 383 | list.append(this.placeEl); | |
| 384 | } | |
| 385 | } | |
| 386 | } | |
| 387 | // decrease horizontal level | |
| 388 | if (mouse.distX < 0) { | |
| 389 | // we can't decrease a level if an item preceeds the current one | |
| 390 | next = this.placeEl.next(opt.itemNodeName); | |
| 391 | if (!next.length) { | |
| 392 | parent = this.placeEl.parent(); | |
| 393 | this.placeEl.closest(opt.itemNodeName).after(this.placeEl); | |
| 394 | if (!parent.children().length) { | |
| 395 | this.unsetParent(parent.parent()); | |
| 396 | } | |
| 397 | } | |
| 398 | } | |
| 399 | } | |
| 400 | ||
| 401 | var isEmpty = false; | |
| 402 | ||
| 403 | // find list item under cursor | |
| 404 | if (!hasPointerEvents) { | |
| 405 | this.dragEl[0].style.visibility = 'hidden'; | |
| 406 | } | |
| 407 | this.pointEl = $(document.elementFromPoint(e.pageX - document.body.scrollLeft, e.pageY - (window.pageYOffset || document.documentElement.scrollTop))); | |
| 408 | if (!hasPointerEvents) { | |
| 409 | this.dragEl[0].style.visibility = 'visible'; | |
| 410 | } | |
| 411 | if (this.pointEl.hasClass(opt.handleClass)) { | |
| 412 | this.pointEl = this.pointEl.parent(opt.itemNodeName); | |
| 413 | } | |
| 414 | if (this.pointEl.hasClass(opt.emptyClass)) { | |
| 415 | isEmpty = true; | |
| 416 | } | |
| 417 | else if (!this.pointEl.length || !this.pointEl.hasClass(opt.itemClass)) { | |
| 418 | return; | |
| 419 | } | |
| 420 | ||
| 421 | // find parent list of item under cursor | |
| 422 | var pointElRoot = this.pointEl.closest('.' + opt.rootClass), | |
| 423 | isNewRoot = this.dragRootEl.data('nestable-id') !== pointElRoot.data('nestable-id'); | |
| 424 | ||
| 425 | /** | |
| 426 | * move vertical | |
| 427 | */ | |
| 428 | if (!mouse.dirAx || isNewRoot || isEmpty) { | |
| 429 | // check if groups match if dragging over new root | |
| 430 | if (isNewRoot && opt.group !== pointElRoot.data('nestable-group')) { | |
| 431 | return; | |
| 432 | } | |
| 433 | // check depth limit | |
| 434 | depth = this.dragDepth - 1 + this.pointEl.parents(opt.listNodeName).length; | |
| 435 | if (depth > opt.maxDepth) { | |
| 436 | return; | |
| 437 | } | |
| 438 | var before = e.pageY < (this.pointEl.offset().top + this.pointEl.height() / 2); | |
| 439 | parent = this.placeEl.parent(); | |
| 440 | // if empty create new list to replace empty placeholder | |
| 441 | if (isEmpty) { | |
| 442 | list = $(document.createElement(opt.listNodeName)).addClass(opt.listClass); | |
| 443 | list.append(this.placeEl); | |
| 444 | this.pointEl.replaceWith(list); | |
| 445 | } | |
| 446 | else if (before) { | |
| 447 | this.pointEl.before(this.placeEl); | |
| 448 | } | |
| 449 | else { | |
| 450 | this.pointEl.after(this.placeEl); | |
| 451 | } | |
| 452 | if (!parent.children().length) { | |
| 453 | this.unsetParent(parent.parent()); | |
| 454 | } | |
| 455 | if (!this.dragRootEl.find(opt.itemNodeName).length) { | |
| 456 | this.dragRootEl.append('<div class="' + opt.emptyClass + '"/>'); | |
| 457 | } | |
| 458 | // parent root list has changed | |
| 459 | if (isNewRoot) { | |
| 460 | this.dragRootEl = pointElRoot; | |
| 461 | this.hasNewRoot = this.el[0] !== this.dragRootEl[0]; | |
| 462 | } | |
| 463 | } | |
| 464 | } | |
| 465 | ||
| 466 | }; | |
| 467 | ||
| 468 | $.fn.nestable = function(params) | |
| 469 | { | |
| 470 | var lists = this, | |
| 471 | retval = this; | |
| 472 | ||
| 473 | lists.each(function() | |
| 474 | { | |
| 475 | var plugin = $(this).data("nestable"); | |
| 476 | ||
| 477 | if (!plugin) { | |
| 478 | $(this).data("nestable", new Plugin(this, params)); | |
| 479 | $(this).data("nestable-id", new Date().getTime()); | |
| 480 | } else { | |
| 481 | if (typeof params === 'string' && typeof plugin[params] === 'function') { | |
| 482 | retval = plugin[params](); | |
| 483 | } | |
| 484 | } | |
| 485 | }); | |
| 486 | ||
| 487 | return retval || lists; | |
| 488 | }; | |
| 489 | ||
| 490 | })(window.jQuery || window.Zepto, window, document); | |
