vendor: 11,776 bytes, lines 1-388
1/** 2* jquery-match-height 0.7.2 by @liabru 3* http://brm.io/jquery-match-height/ 4* License: MIT 5*/ 6 7;(function(factory) { // eslint-disable-line no-extra-semi 8 'use strict'; 9 if (typeof define === 'function' && define.amd) { 10 // AMD 11 define(['jquery'], factory); 12 } else if (typeof module !== 'undefined' && module.exports) { 13 // CommonJS 14 module.exports = factory(require('jquery')); 15 } else { 16 // Global 17 factory(jQuery); 18 } 19})(function($) { 20 /* 21 * internal 22 */ 23 24 var _previousResizeWidth = -1, 25 _updateTimeout = -1; 26 27 /* 28 * _parse 29 * value parse utility function 30 */ 31 32 var _parse = function(value) { 33 // parse value and convert NaN to 0 34 return parseFloat(value) || 0; 35 }; 36 37 /* 38 * _rows 39 * utility function returns array of jQuery selections representing each row 40 * (as displayed after float wrapping applied by browser) 41 */ 42 43 var _rows = function(elements) { 44 var tolerance = 1, 45 $elements = $(elements), 46 lastTop = null, 47 rows = []; 48 49 // group elements by their top position 50 $elements.each(function(){ 51 var $that = $(this), 52 top = $that.offset().top - _parse($that.css('margin-top')), 53 lastRow = rows.length > 0 ? rows[rows.length - 1] : null; 54 55 if (lastRow === null) { 56 // first item on the row, so just push it 57 rows.push($that); 58 } else { 59 // if the row top is the same, add to the row group 60 if (Math.floor(Math.abs(lastTop - top)) <= tolerance) { 61 rows[rows.length - 1] = lastRow.add($that); 62 } else { 63 // otherwise start a new row group 64 rows.push($that); 65 } 66 } 67 68 // keep track of the last row top 69 lastTop = top; 70 }); 71 72 return rows; 73 }; 74 75 /* 76 * _parseOptions 77 * handle plugin options 78 */ 79 80 var _parseOptions = function(options) { 81 var opts = { 82 byRow: true, 83 property: 'height', 84 target: null, 85 remove: false 86 }; 87 88 if (typeof options === 'object') { 89 return $.extend(opts, options); 90 } 91 92 if (typeof options === 'boolean') { 93 opts.byRow = options; 94 } else if (options === 'remove') { 95 opts.remove = true; 96 } 97 98 return opts; 99 }; 100 101 /* 102 * matchHeight 103 * plugin definition 104 */ 105 106 var matchHeight = $.fn.matchHeight = function(options) { 107 var opts = _parseOptions(options); 108 109 // handle remove 110 if (opts.remove) { 111 var that = this; 112 113 // remove fixed height from all selected elements 114 this.css(opts.property, ''); 115 116 // remove selected elements from all groups 117 $.each(matchHeight._groups, function(key, group) { 118 group.elements = group.elements.not(that); 119 }); 120 121 // TODO: cleanup empty groups 122 123 return this; 124 } 125 126 if (this.length <= 1 && !opts.target) { 127 return this; 128 } 129 130 // keep track of this group so we can re-apply later on load and resize events 131 matchHeight._groups.push({ 132 elements: this, 133 options: opts 134 }); 135 136 // match each element's height to the tallest element in the selection 137 matchHeight._apply(this, opts); 138 139 return this; 140 }; 141 142 /* 143 * plugin global options 144 */ 145 146 matchHeight.version = '0.7.2'; 147 matchHeight._groups = []; 148 matchHeight._throttle = 80; 149 matchHeight._maintainScroll = false; 150 matchHeight._beforeUpdate = null; 151 matchHeight._afterUpdate = null; 152 matchHeight._rows = _rows; 153 matchHeight._parse = _parse; 154 matchHeight._parseOptions = _parseOptions; 155 156 /* 157 * matchHeight._apply 158 * apply matchHeight to given elements 159 */ 160 161 matchHeight._apply = function(elements, options) { 162 var opts = _parseOptions(options), 163 $elements = $(elements), 164 rows = [$elements]; 165 166 // take note of scroll position 167 var scrollTop = $(window).scrollTop(), 168 htmlHeight = $('html').outerHeight(true); 169 170 // get hidden parents 171 var $hiddenParents = $elements.parents().filter(':hidden'); 172 173 // cache the original inline style 174 $hiddenParents.each(function() { 175 var $that = $(this); 176 $that.data('style-cache', $that.attr('style')); 177 }); 178 179 // temporarily must force hidden parents visible 180 $hiddenParents.css('display', 'block'); 181 182 // get rows if using byRow, otherwise assume one row 183 if (opts.byRow && !opts.target) { 184 185 // must first force an arbitrary equal height so floating elements break evenly 186 $elements.each(function() { 187 var $that = $(this), 188 display = $that.css('display'); 189 190 // temporarily force a usable display value 191 if (display !== 'inline-block' && display !== 'flex' && display !== 'inline-flex') { 192 display = 'block'; 193 } 194 195 // cache the original inline style 196 $that.data('style-cache', $that.attr('style')); 197 198 $that.css({ 199 'display': display, 200 'padding-top': '0', 201 'padding-bottom': '0', 202 'margin-top': '0', 203 'margin-bottom': '0', 204 'border-top-width': '0', 205 'border-bottom-width': '0', 206 'height': '100px', 207 'overflow': 'hidden' 208 }); 209 }); 210 211 // get the array of rows (based on element top position) 212 rows = _rows($elements); 213 214 // revert original inline styles 215 $elements.each(function() { 216 var $that = $(this); 217 $that.attr('style', $that.data('style-cache') || ''); 218 }); 219 } 220 221 $.each(rows, function(key, row) { 222 var $row = $(row), 223 targetHeight = 0; 224 225 if (!opts.target) { 226 // skip apply to rows with only one item 227 if (opts.byRow && $row.length <= 1) { 228 $row.css(opts.property, ''); 229 return; 230 } 231 232 // iterate the row and find the max height 233 $row.each(function(){ 234 var $that = $(this), 235 style = $that.attr('style'), 236 display = $that.css('display'); 237 238 // temporarily force a usable display value 239 if (display !== 'inline-block' && display !== 'flex' && display !== 'inline-flex') { 240 display = 'block'; 241 } 242 243 // ensure we get the correct actual height (and not a previously set height value) 244 var css = { 'display': display }; 245 css[opts.property] = ''; 246 $that.css(css); 247 248 // find the max height (including padding, but not margin) 249 if ($that.outerHeight(false) > targetHeight) { 250 targetHeight = $that.outerHeight(false); 251 } 252 253 // revert styles 254 if (style) { 255 $that.attr('style', style); 256 } else { 257 $that.css('display', ''); 258 } 259 }); 260 } else { 261 // if target set, use the height of the target element 262 targetHeight = opts.target.outerHeight(false); 263 } 264 265 // iterate the row and apply the height to all elements 266 $row.each(function(){ 267 var $that = $(this), 268 verticalPadding = 0; 269 270 // don't apply to a target 271 if (opts.target && $that.is(opts.target)) { 272 return; 273 } 274 275 // handle padding and border correctly (required when not using border-box) 276 if ($that.css('box-sizing') !== 'border-box') { 277 verticalPadding += _parse($that.css('border-top-width')) + _parse($that.css('border-bottom-width')); 278 verticalPadding += _parse($that.css('padding-top')) + _parse($that.css('padding-bottom')); 279 } 280 281 // set the height (accounting for padding and border) 282 $that.css(opts.property, (targetHeight - verticalPadding) + 'px'); 283 }); 284 }); 285 286 // revert hidden parents 287 $hiddenParents.each(function() { 288 var $that = $(this); 289 $that.attr('style', $that.data('style-cache') || null); 290 }); 291 292 // restore scroll position if enabled 293 if (matchHeight._maintainScroll) { 294 $(window).scrollTop((scrollTop / htmlHeight) * $('html').outerHeight(true)); 295 } 296 297 return this; 298 }; 299 300 /* 301 * matchHeight._applyDataApi 302 * applies matchHeight to all elements with a data-match-height attribute 303 */ 304 305 matchHeight._applyDataApi = function() { 306 var groups = {}; 307 308 // generate groups by their groupId set by elements using data-match-height 309 $('[data-match-height], [data-mh]').each(function() { 310 var $this = $(this), 311 groupId = $this.attr('data-mh') || $this.attr('data-match-height'); 312 313 if (groupId in groups) { 314 groups[groupId] = groups[groupId].add($this); 315 } else { 316 groups[groupId] = $this; 317 } 318 }); 319 320 // apply matchHeight to each group 321 $.each(groups, function() { 322 this.matchHeight(true); 323 }); 324 }; 325 326 /* 327 * matchHeight._update 328 * updates matchHeight on all current groups with their correct options 329 */ 330 331 var _update = function(event) { 332 if (matchHeight._beforeUpdate) { 333 matchHeight._beforeUpdate(event, matchHeight._groups); 334 } 335 336 $.each(matchHeight._groups, function() { 337 matchHeight._apply(this.elements, this.options); 338 }); 339 340 if (matchHeight._afterUpdate) { 341 matchHeight._afterUpdate(event, matchHeight._groups); 342 } 343 }; 344 345 matchHeight._update = function(throttle, event) { 346 // prevent update if fired from a resize event 347 // where the viewport width hasn't actually changed 348 // fixes an event looping bug in IE8 349 if (event && event.type === 'resize') { 350 var windowWidth = $(window).width(); 351 if (windowWidth === _previousResizeWidth) { 352 return; 353 } 354 _previousResizeWidth = windowWidth; 355 } 356 357 // throttle updates 358 if (!throttle) { 359 _update(event); 360 } else if (_updateTimeout === -1) { 361 _updateTimeout = setTimeout(function() { 362 _update(event); 363 _updateTimeout = -1; 364 }, matchHeight._throttle); 365 } 366 }; 367 368 /* 369 * bind events 370 */ 371 372 // apply on DOM ready event 373 $(matchHeight._applyDataApi); 374 375 // use on or bind where supported 376 var on = $.fn.on ? 'on' : 'bind'; 377 378 // update heights on load and resize events 379 $(window)[on]('load', function(event) { 380 matchHeight._update(false, event); 381 }); 382 383 // throttled update heights on resize events 384 $(window)[on]('resize orientationchange', function(event) { 385 matchHeight._update(true, event); 386 }); 387 388});
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