https://asialearnhub.com/wp-content/themes/egrad/modules/blog/assets/js/jquery.bxslider.js?ver=7.0.3
vendor: 72,445 bytes, lines 1-1663
1/** 2 * bxSlider v4.2.1d 3 * Copyright 2013-2017 Steven Wanderski 4 * Written while drinking Belgian ales and listening to jazz 5 * Licensed under MIT (http://opensource.org/licenses/MIT) 6 */ 7 8 ;(function($) { 9 10 var defaults = { 11 12 // GENERAL 13 mode: 'horizontal', 14 slideSelector: '', 15 infiniteLoop: true, 16 hideControlOnEnd: false, 17 speed: 500, 18 easing: null, 19 slideMargin: 0, 20 startSlide: 0, 21 randomStart: false, 22 captions: false, 23 ticker: false, 24 tickerHover: false, 25 adaptiveHeight: false, 26 adaptiveHeightSpeed: 500, 27 video: false, 28 useCSS: true, 29 preloadImages: 'visible', 30 responsive: true, 31 slideZIndex: 50, 32 wrapperClass: 'bx-wrapper', 33 34 // TOUCH 35 touchEnabled: true, 36 swipeThreshold: 50, 37 oneToOneTouch: true, 38 preventDefaultSwipeX: true, 39 preventDefaultSwipeY: false, 40 41 // ACCESSIBILITY 42 ariaLive: true, 43 ariaHidden: true, 44 45 // KEYBOARD 46 keyboardEnabled: false, 47 48 // PAGER 49 pager: true, 50 pagerType: 'full', 51 pagerShortSeparator: ' / ', 52 pagerSelector: null, 53 buildPager: null, 54 pagerCustom: null, 55 56 // CONTROLS 57 controls: true, 58 nextText: 'Next', 59 prevText: 'Prev', 60 nextSelector: null, 61 prevSelector: null, 62 autoControls: false, 63 startText: 'Start', 64 stopText: 'Stop', 65 autoControlsCombine: false, 66 autoControlsSelector: null, 67 68 // AUTO 69 auto: false, 70 pause: 4000, 71 autoStart: true, 72 autoDirection: 'next', 73 stopAutoOnClick: false, 74 autoHover: false, 75 autoDelay: 0, 76 autoSlideForOnePage: false, 77 78 // CAROUSEL 79 minSlides: 1, 80 maxSlides: 1, 81 moveSlides: 0, 82 slideWidth: 0, 83 shrinkItems: false, 84 85 // CALLBACKS 86 onSliderLoad: function() { return true; }, 87 onSlideBefore: function() { return true; }, 88 onSlideAfter: function() { return true; }, 89 onSlideNext: function() { return true; }, 90 onSlidePrev: function() { return true; }, 91 onSliderResize: function() { return true; }, 92 onAutoChange: function() { return true; } //calls when auto slides starts and stops 93 }; 94 95 $.fn.bxSlider = function(options) { 96 97 if (this.length === 0) { 98 return this; 99 } 100 101 // support multiple elements 102 if (this.length > 1) { 103 this.each(function() { 104 $(this).bxSlider(options); 105 }); 106 return this; 107 } 108 109 // create a namespace to be used throughout the plugin 110 var slider = {}, 111 // set a reference to our slider element 112 el = this, 113 // get the original window dimens (thanks a lot IE) 114 windowWidth = $(window).width(), 115 windowHeight = $(window).height(); 116 117 // Return if slider is already initialized 118 if ($(el).data('bxSlider')) { return; } 119 120 /** 121 * =================================================================================== 122 * = PRIVATE FUNCTIONS 123 * =================================================================================== 124 */ 125 126 /** 127 * Initializes namespace settings to be used throughout plugin 128 */ 129 var init = function() { 130 // Return if slider is already initialized 131 if ($(el).data('bxSlider')) { return; } 132 // merge user-supplied options with the defaults 133 slider.settings = $.extend({}, defaults, options); 134 // parse slideWidth setting 135 slider.settings.slideWidth = parseInt(slider.settings.slideWidth); 136 // store the original children 137 slider.children = el.children(slider.settings.slideSelector); 138 // check if actual number of slides is less than minSlides / maxSlides 139 if (slider.children.length < slider.settings.minSlides) { slider.settings.minSlides = slider.children.length; } 140 if (slider.children.length < slider.settings.maxSlides) { slider.settings.maxSlides = slider.children.length; } 141 // if random start, set the startSlide setting to random number 142 if (slider.settings.randomStart) { slider.settings.startSlide = Math.floor(Math.random() * slider.children.length); } 143 // store active slide information 144 slider.active = { index: slider.settings.startSlide }; 145 // store if the slider is in carousel mode (displaying / moving multiple slides) 146 slider.carousel = slider.settings.minSlides > 1 || slider.settings.maxSlides > 1; 147 // if carousel, force preloadImages = 'all' 148 if (slider.carousel) { slider.settings.preloadImages = 'all'; } 149 // calculate the min / max width thresholds based on min / max number of slides 150 // used to setup and update carousel slides dimensions 151 slider.minThreshold = (slider.settings.minSlides * slider.settings.slideWidth) + ((slider.settings.minSlides - 1) * slider.settings.slideMargin); 152 slider.maxThreshold = (slider.settings.maxSlides * slider.settings.slideWidth) + ((slider.settings.maxSlides - 1) * slider.settings.slideMargin); 153 // store the current state of the slider (if currently animating, working is true) 154 slider.working = false; 155 // initialize the controls object 156 slider.controls = {}; 157 // initialize an auto interval 158 slider.interval = null; 159 // determine which property to use for transitions 160 slider.animProp = slider.settings.mode === 'vertical' ? 'top' : 'left'; 161 // determine if hardware acceleration can be used 162 slider.usingCSS = slider.settings.useCSS && slider.settings.mode !== 'fade' && (function() { 163 // create our test div element 164 var div = document.createElement('div'), 165 // css transition properties 166 props = ['WebkitPerspective', 'MozPerspective', 'OPerspective', 'msPerspective']; 167 // test for each property 168 for (var i = 0; i < props.length; i++) { 169 if (div.style[props[i]] !== undefined) { 170 slider.cssPrefix = props[i].replace('Perspective', '').toLowerCase(); 171 slider.animProp = '-' + slider.cssPrefix + '-transform'; 172 return true; 173 } 174 } 175 return false; 176 }()); 177 // if vertical mode always make maxSlides and minSlides equal 178 if (slider.settings.mode === 'vertical') { slider.settings.maxSlides = slider.settings.minSlides; } 179 // save original style data 180 el.data('origStyle', el.attr('style')); 181 el.children(slider.settings.slideSelector).each(function() { 182 $(this).data('origStyle', $(this).attr('style')); 183 }); 184 185 // perform all DOM / CSS modifications 186 setup(); 187 }; 188 189 /** 190 * Performs all DOM and CSS modifications 191 */ 192 var setup = function() { 193 var preloadSelector = slider.children.eq(slider.settings.startSlide); // set the default preload selector (visible) 194 195 // wrap el in a wrapper 196 el.wrap('<div class="' + slider.settings.wrapperClass + '"><div class="bx-viewport"></div></div>'); 197 // store a namespace reference to .bx-viewport 198 slider.viewport = el.parent(); 199 200 // add aria-live if the setting is enabled and ticker mode is disabled 201 if (slider.settings.ariaLive && !slider.settings.ticker) { 202 slider.viewport.attr('aria-live', 'polite'); 203 } 204 // add a loading div to display while images are loading 205 slider.loader = $('<div class="bx-loading" />'); 206 slider.viewport.prepend(slider.loader); 207 // set el to a massive width, to hold any needed slides 208 // also strip any margin and padding from el 209 el.css({ 210 width: slider.settings.mode === 'horizontal' ? (slider.children.length * 1000 + 215) + '%' : 'auto', 211 position: 'relative' 212 }); 213 // if using CSS, add the easing property 214 if (slider.usingCSS && slider.settings.easing) { 215 el.css('-' + slider.cssPrefix + '-transition-timing-function', slider.settings.easing); 216 // if not using CSS and no easing value was supplied, use the default JS animation easing (swing) 217 } else if (!slider.settings.easing) { 218 slider.settings.easing = 'swing'; 219 } 220 // make modifications to the viewport (.bx-viewport) 221 slider.viewport.css({ 222 width: '100%', 223 overflow: 'hidden', 224 position: 'relative' 225 }); 226 slider.viewport.parent().css({ 227 maxWidth: getViewportMaxWidth() 228 }); 229 // apply css to all slider children 230 slider.children.css({ 231 // the float attribute is a reserved word in compressors like YUI compressor and need to be quoted #48 232 'float': slider.settings.mode === 'horizontal' ? 'left' : 'none', 233 listStyle: 'none', 234 position: 'relative' 235 }); 236 // apply the calculated width after the float is applied to prevent scrollbar interference 237 slider.children.css('width', getSlideWidth()); 238 // if slideMargin is supplied, add the css 239 if (slider.settings.mode === 'horizontal' && slider.settings.slideMargin > 0) { slider.children.css('marginRight', slider.settings.slideMargin); } 240 if (slider.settings.mode === 'vertical' && slider.settings.slideMargin > 0) { slider.children.css('marginBottom', slider.settings.slideMargin); } 241 // if "fade" mode, add positioning and z-index CSS 242 if (slider.settings.mode === 'fade') { 243 slider.children.css({ 244 position: 'absolute', 245 zIndex: 0, 246 display: 'none' 247 }); 248 // prepare the z-index on the showing element 249 slider.children.eq(slider.settings.startSlide).css({zIndex: slider.settings.slideZIndex, display: 'block'}); 250 } 251 // create an element to contain all slider controls (pager, start / stop, etc) 252 slider.controls.el = $('<div class="bx-controls" />'); 253 // if captions are requested, add them 254 if (slider.settings.captions) { appendCaptions(); } 255 // check if startSlide is last slide 256 slider.active.last = slider.settings.startSlide === getPagerQty() - 1; 257 // if video is true, set up the fitVids plugin 258 if (slider.settings.video) { el.fitVids(); } 259 //preloadImages 260 if (slider.settings.preloadImages === 'none') { 261 preloadSelector = null; 262 } 263 else if (slider.settings.preloadImages === 'all' || slider.settings.ticker) { 264 preloadSelector = slider.children; 265 } 266 // only check for control addition if not in "ticker" mode 267 if (!slider.settings.ticker) { 268 // if controls are requested, add them 269 if (slider.settings.controls) { appendControls(); } 270 // if auto is true, and auto controls are requested, add them 271 if (slider.settings.auto && slider.settings.autoControls) { appendControlsAuto(); } 272 // if pager is requested, add it 273 if (slider.settings.pager) { appendPager(); } 274 // if any control option is requested, add the controls wrapper 275 if (slider.settings.controls || slider.settings.autoControls || slider.settings.pager) { slider.viewport.after(slider.controls.el); } 276 // if ticker mode, do not allow a pager 277 } else { 278 slider.settings.pager = false; 279 } 280 if (preloadSelector === null) { 281 start(); 282 } else { 283 loadElements(preloadSelector, start); 284 } 285 }; 286 287 var loadElements = function(selector, callback) { 288 var total = selector.find('img:not([src=""]), iframe').length, 289 count = 0; 290 if (total === 0) { 291 callback(); 292 return; 293 } 294 selector.find('img:not([src=""]), iframe').each(function() { 295 $(this).one('load error', function() { 296 if (++count === total) { callback(); } 297 }).each(function() { 298 if (this.complete || this.src == '') { $(this).trigger('load'); } 299 }); 300 }); 301 }; 302 303 /** 304 * Start the slider 305 */ 306 var start = function() { 307 // if infinite loop, prepare additional slides 308 if (slider.settings.infiniteLoop && slider.settings.mode !== 'fade' && !slider.settings.ticker) { 309 var slice = slider.settings.mode === 'vertical' ? slider.settings.minSlides : slider.settings.maxSlides, 310 sliceAppend = slider.children.slice(0, slice).clone(true).addClass('bx-clone'), 311 slicePrepend = slider.children.slice(-slice).clone(true).addClass('bx-clone'); 312 if (slider.settings.ariaHidden) { 313 sliceAppend.attr('aria-hidden', true); 314 slicePrepend.attr('aria-hidden', true); 315 } 316 el.append(sliceAppend).prepend(slicePrepend); 317 } 318 // remove the loading DOM element 319 slider.loader.remove(); 320 // set the left / top position of "el" 321 setSlidePosition(); 322 // if "vertical" mode, always use adaptiveHeight to prevent odd behavior 323 if (slider.settings.mode === 'vertical') { slider.settings.adaptiveHeight = true; } 324 // set the viewport height 325 slider.viewport.height(getViewportHeight()); 326 // make sure everything is positioned just right (same as a window resize) 327 el.redrawSlider(); 328 // onSliderLoad callback 329 slider.settings.onSliderLoad.call(el, slider.active.index); 330 // slider has been fully initialized 331 slider.initialized = true; 332 // add the resize call to the window 333 if (slider.settings.responsive) { $(window).on('resize', resizeWindow); } 334 // if auto is true and has more than 1 page, start the show 335 if (slider.settings.auto && slider.settings.autoStart && (getPagerQty() > 1 || slider.settings.autoSlideForOnePage)) { initAuto(); } 336 // if ticker is true, start the ticker 337 if (slider.settings.ticker) { initTicker(); } 338 // if pager is requested, make the appropriate pager link active 339 if (slider.settings.pager) { updatePagerActive(slider.settings.startSlide); } 340 // check for any updates to the controls (like hideControlOnEnd updates) 341 if (slider.settings.controls) { updateDirectionControls(); } 342 // if touchEnabled is true, setup the touch events 343 if (slider.settings.touchEnabled && !slider.settings.ticker) { initTouch(); } 344 // if keyboardEnabled is true, setup the keyboard events 345 if (slider.settings.keyboardEnabled && !slider.settings.ticker) { 346 $(document).keydown(keyPress); 347 } 348 }; 349 350 /** 351 * Returns the calculated height of the viewport, used to determine either adaptiveHeight or the maxHeight value 352 */ 353 var getViewportHeight = function() { 354 var height = 0; 355 // first determine which children (slides) should be used in our height calculation 356 var children = $(); 357 // if mode is not "vertical" and adaptiveHeight is false, include all children 358 if (slider.settings.mode !== 'vertical' && !slider.settings.adaptiveHeight) { 359 children = slider.children; 360 } else { 361 // if not carousel, return the single active child 362 if (!slider.carousel) { 363 children = slider.children.eq(slider.active.index); 364 // if carousel, return a slice of children 365 } else { 366 // get the individual slide index 367 var currentIndex = slider.settings.moveSlides === 1 ? slider.active.index : slider.active.index * getMoveBy(); 368 // add the current slide to the children 369 children = slider.children.eq(currentIndex); 370 // cycle through the remaining "showing" slides 371 for (i = 1; i <= slider.settings.maxSlides - 1; i++) { 372 // if looped back to the start 373 if (currentIndex + i >= slider.children.length) { 374 children = children.add(slider.children.eq(i - 1)); 375 } else { 376 children = children.add(slider.children.eq(currentIndex + i)); 377 } 378 } 379 } 380 } 381 // if "vertical" mode, calculate the sum of the heights of the children 382 if (slider.settings.mode === 'vertical') { 383 children.each(function(index) { 384 height += $(this).outerHeight(); 385 }); 386 // add user-supplied margins 387 if (slider.settings.slideMargin > 0) { 388 height += slider.settings.slideMargin * (slider.settings.minSlides - 1); 389 } 390 // if not "vertical" mode, calculate the max height of the children 391 } else { 392 height = Math.max.apply(Math, children.map(function() { 393 return $(this).outerHeight(false); 394 }).get()); 395 } 396 397 if (slider.viewport.css('box-sizing') === 'border-box') { 398 height += parseFloat(slider.viewport.css('padding-top')) + parseFloat(slider.viewport.css('padding-bottom')) + 399 parseFloat(slider.viewport.css('border-top-width')) + parseFloat(slider.viewport.css('border-bottom-width')); 400 } else if (slider.viewport.css('box-sizing') === 'padding-box') { 401 height += parseFloat(slider.viewport.css('padding-top')) + parseFloat(slider.viewport.css('padding-bottom')); 402 } 403 404 return height; 405 }; 406 407 /** 408 * Returns the calculated width to be used for the outer wrapper / viewport 409 */ 410 var getViewportMaxWidth = function() { 411 var width = '100%'; 412 if (slider.settings.slideWidth > 0) { 413 if (slider.settings.mode === 'horizontal') { 414 width = (slider.settings.maxSlides * slider.settings.slideWidth) + ((slider.settings.maxSlides - 1) * slider.settings.slideMargin); 415 } else { 416 width = slider.settings.slideWidth; 417 } 418 } 419 return width; 420 }; 421 422 /** 423 * Returns the calculated width to be applied to each slide 424 */ 425 var getSlideWidth = function() { 426 var newElWidth = slider.settings.slideWidth, // start with any user-supplied slide width 427 wrapWidth = slider.viewport.width(); // get the current viewport width 428 // if slide width was not supplied, or is larger than the viewport use the viewport width 429 if (slider.settings.slideWidth === 0 || 430 (slider.settings.slideWidth > wrapWidth && !slider.carousel) || 431 slider.settings.mode === 'vertical') { 432 newElWidth = wrapWidth; 433 // if carousel, use the thresholds to determine the width 434 } else if (slider.settings.maxSlides > 1 && slider.settings.mode === 'horizontal') { 435 if (wrapWidth > slider.maxThreshold) { 436 return newElWidth; 437 } else if (wrapWidth < slider.minThreshold) { 438 newElWidth = (wrapWidth - (slider.settings.slideMargin * (slider.settings.minSlides - 1))) / slider.settings.minSlides; 439 } else if (slider.settings.shrinkItems) { 440 newElWidth = Math.floor((wrapWidth + slider.settings.slideMargin) / (Math.ceil((wrapWidth + slider.settings.slideMargin) / (newElWidth + slider.settings.slideMargin))) - slider.settings.slideMargin); 441 } 442 } 443 return newElWidth; 444 }; 445 446 /** 447 * Returns the number of slides currently visible in the viewport (includes partially visible slides) 448 */ 449 var getNumberSlidesShowing = function() { 450 var slidesShowing = 1, 451 childWidth = null; 452 if (slider.settings.mode === 'horizontal' && slider.settings.slideWidth > 0) { 453 // if viewport is smaller than minThreshold, return minSlides 454 if (slider.viewport.width() < slider.minThreshold) { 455 slidesShowing = slider.settings.minSlides; 456 // if viewport is larger than maxThreshold, return maxSlides 457 } else if (slider.viewport.width() > slider.maxThreshold) { 458 slidesShowing = slider.settings.maxSlides; 459 // if viewport is between min / max thresholds, divide viewport width by first child width 460 } else { 461 childWidth = slider.children.first().width() + slider.settings.slideMargin; 462 slidesShowing = Math.floor((slider.viewport.width() + 463 slider.settings.slideMargin) / childWidth) || 1; 464 } 465 // if "vertical" mode, slides showing will always be minSlides 466 } else if (slider.settings.mode === 'vertical') { 467 slidesShowing = slider.settings.minSlides; 468 } 469 return slidesShowing; 470 }; 471 472 /** 473 * Returns the number of pages (one full viewport of slides is one "page") 474 */ 475 var getPagerQty = function() { 476 var pagerQty = 0, 477 breakPoint = 0, 478 counter = 0; 479 // if moveSlides is specified by the user 480 if (slider.settings.moveSlides > 0) { 481 if (slider.settings.infiniteLoop) { 482 pagerQty = Math.ceil(slider.children.length / getMoveBy()); 483 } else { 484 // when breakpoint goes above children length, counter is the number of pages 485 while (breakPoint < slider.children.length) { 486 ++pagerQty; 487 breakPoint = counter + getNumberSlidesShowing(); 488 counter += slider.settings.moveSlides <= getNumberSlidesShowing() ? slider.settings.moveSlides : getNumberSlidesShowing(); 489 } 490 return counter; 491 } 492 // if moveSlides is 0 (auto) divide children length by sides showing, then round up 493 } else { 494 pagerQty = Math.ceil(slider.children.length / getNumberSlidesShowing()); 495 } 496 return pagerQty; 497 }; 498 499 /** 500 * Returns the number of individual slides by which to shift the slider 501 */ 502 var getMoveBy = function() { 503 // if moveSlides was set by the user and moveSlides is less than number of slides showing 504 if (slider.settings.moveSlides > 0 && slider.settings.moveSlides <= getNumberSlidesShowing()) { 505 return slider.settings.moveSlides; 506 } 507 // if moveSlides is 0 (auto) 508 return getNumberSlidesShowing(); 509 }; 510 511 /** 512 * Sets the slider's (el) left or top position 513 */ 514 var setSlidePosition = function() { 515 var position, lastChild, lastShowingIndex; 516 // if last slide, not infinite loop, and number of children is larger than specified maxSlides 517 if (slider.children.length > slider.settings.maxSlides && slider.active.last && !slider.settings.infiniteLoop) { 518 if (slider.settings.mode === 'horizontal') { 519 // get the last child's position 520 lastChild = slider.children.last(); 521 position = lastChild.position(); 522 // set the left position 523 setPositionProperty(-(position.left - (slider.viewport.width() - lastChild.outerWidth())), 'reset', 0); 524 } else if (slider.settings.mode === 'vertical') { 525 // get the last showing index's position 526 lastShowingIndex = slider.children.length - slider.settings.minSlides; 527 position = slider.children.eq(lastShowingIndex).position(); 528 // set the top position 529 setPositionProperty(-position.top, 'reset', 0); 530 } 531 // if not last slide 532 } else { 533 // get the position of the first showing slide 534 position = slider.children.eq(slider.active.index * getMoveBy()).position(); 535 // check for last slide 536 if (slider.active.index === getPagerQty() - 1) { slider.active.last = true; } 537 // set the respective position 538 if (position !== undefined) { 539 if (slider.settings.mode === 'horizontal') { setPositionProperty(-position.left, 'reset', 0); } 540 else if (slider.settings.mode === 'vertical') { setPositionProperty(-position.top, 'reset', 0); } 541 } 542 } 543 }; 544 545 /** 546 * Sets the el's animating property position (which in turn will sometimes animate el). 547 * If using CSS, sets the transform property. If not using CSS, sets the top / left property. 548 * 549 * @param value (int) 550 * - the animating property's value 551 * 552 * @param type (string) 'slide', 'reset', 'ticker' 553 * - the type of instance for which the function is being 554 * 555 * @param duration (int) 556 * - the amount of time (in ms) the transition should occupy 557 * 558 * @param params (array) optional 559 * - an optional parameter containing any variables that need to be passed in 560 */ 561 var setPositionProperty = function(value, type, duration, params) { 562 var animateObj, propValue; 563 // use CSS transform 564 if (slider.usingCSS) { 565 // determine the translate3d value 566 propValue = slider.settings.mode === 'vertical' ? 'translate3d(0, ' + value + 'px, 0)' : 'translate3d(' + value + 'px, 0, 0)'; 567 // add the CSS transition-duration 568 el.css('-' + slider.cssPrefix + '-transition-duration', duration / 1000 + 's'); 569 if (type === 'slide') { 570 // set the property value 571 el.css(slider.animProp, propValue); 572 if (duration !== 0) { 573 // add a callback method - executes when CSS transition completes 574 el.on('transitionend webkitTransitionEnd oTransitionEnd MSTransitionEnd', function(e) { 575 //make sure it's the correct one 576 if (!$(e.target).is(el)) { return; } 577 // remove the callback 578 el.off('transitionend webkitTransitionEnd oTransitionEnd MSTransitionEnd'); 579 updateAfterSlideTransition(); 580 }); 581 } else { //duration = 0 582 updateAfterSlideTransition(); 583 } 584 } else if (type === 'reset') { 585 el.css(slider.animProp, propValue); 586 } else if (type === 'ticker') { 587 // make the transition use 'linear' 588 el.css('-' + slider.cssPrefix + '-transition-timing-function', 'linear'); 589 el.css(slider.animProp, propValue); 590 if (duration !== 0) { 591 el.on('transitionend webkitTransitionEnd oTransitionEnd MSTransitionEnd', function(e) { 592 //make sure it's the correct one 593 if (!$(e.target).is(el)) { return; } 594 // remove the callback 595 el.off('transitionend webkitTransitionEnd oTransitionEnd MSTransitionEnd'); 596 // reset the position 597 setPositionProperty(params.resetValue, 'reset', 0); 598 // start the loop again 599 tickerLoop(); 600 }); 601 } else { //duration = 0 602 setPositionProperty(params.resetValue, 'reset', 0); 603 tickerLoop(); 604 } 605 } 606 // use JS animate 607 } else { 608 animateObj = {}; 609 animateObj[slider.animProp] = value; 610 if (type === 'slide') { 611 el.animate(animateObj, duration, slider.settings.easing, function() { 612 updateAfterSlideTransition(); 613 }); 614 } else if (type === 'reset') { 615 el.css(slider.animProp, value); 616 } else if (type === 'ticker') { 617 el.animate(animateObj, duration, 'linear', function() { 618 setPositionProperty(params.resetValue, 'reset', 0); 619 // run the recursive loop after animation 620 tickerLoop(); 621 }); 622 } 623 } 624 }; 625 626 /** 627 * Populates the pager with proper amount of pages 628 */ 629 var populatePager = function() { 630 var pagerHtml = '', 631 linkContent = '', 632 pagerQty = getPagerQty(); 633 // loop through each pager item 634 for (var i = 0; i < pagerQty; i++) { 635 linkContent = ''; 636 // if a buildPager function is supplied, use it to get pager link value, else use index + 1 637 if (slider.settings.buildPager && $.isFunction(slider.settings.buildPager) || slider.settings.pagerCustom) { 638 linkContent = slider.settings.buildPager(i); 639 slider.pagerEl.addClass('bx-custom-pager'); 640 } else { 641 linkContent = i + 1; 642 slider.pagerEl.addClass('bx-default-pager'); 643 } 644 // var linkContent = slider.settings.buildPager && $.isFunction(slider.settings.buildPager) ? slider.settings.buildPager(i) : i + 1; 645 // add the markup to the string 646 pagerHtml += '<div class="bx-pager-item"><a href="" data-slide-index="' + i + '" class="bx-pager-link">' + linkContent + '</a></div>'; 647 } 648 // populate the pager element with pager links 649 slider.pagerEl.html(pagerHtml); 650 }; 651 652 /** 653 * Appends the pager to the controls element 654 */ 655 var appendPager = function() { 656 if (!slider.settings.pagerCustom) { 657 // create the pager DOM element 658 slider.pagerEl = $('<div class="bx-pager" />'); 659 // if a pager selector was supplied, populate it with the pager 660 if (slider.settings.pagerSelector) { 661 $(slider.settings.pagerSelector).html(slider.pagerEl); 662 // if no pager selector was supplied, add it after the wrapper 663 } else { 664 slider.controls.el.addClass('bx-has-pager').append(slider.pagerEl); 665 } 666 // populate the pager 667 populatePager(); 668 } else { 669 slider.pagerEl = $(slider.settings.pagerCustom); 670 } 671 // assign the pager click binding 672 slider.pagerEl.on('click touchend', 'a', clickPagerBind); 673 }; 674 675 /** 676 * Appends prev / next controls to the controls element 677 */ 678 var appendControls = function() { 679 slider.controls.next = $('<a class="bx-next" href="">' + slider.settings.nextText + '</a>'); 680 slider.controls.prev = $('<a class="bx-prev" href="">' + slider.settings.prevText + '</a>'); 681 // add click actions to the controls 682 slider.controls.next.on('click touchend', clickNextBind); 683 slider.controls.prev.on('click touchend', clickPrevBind); 684 // if nextSelector was supplied, populate it 685 if (slider.settings.nextSelector) { 686 $(slider.settings.nextSelector).append(slider.controls.next); 687 } 688 // if prevSelector was supplied, populate it 689 if (slider.settings.prevSelector) { 690 $(slider.settings.prevSelector).append(slider.controls.prev); 691 } 692 // if no custom selectors were supplied 693 if (!slider.settings.nextSelector && !slider.settings.prevSelector) { 694 // add the controls to the DOM 695 slider.controls.directionEl = $('<div class="bx-controls-direction" />'); 696 // add the control elements to the directionEl 697 slider.controls.directionEl.append(slider.controls.prev).append(slider.controls.next); 698 // slider.viewport.append(slider.controls.directionEl); 699 slider.controls.el.addClass('bx-has-controls-direction').append(slider.controls.directionEl); 700 } 701 }; 702 703 /** 704 * Appends start / stop auto controls to the controls element 705 */ 706 var appendControlsAuto = function() { 707 slider.controls.start = $('<div class="bx-controls-auto-item"><a class="bx-start" href="">' + slider.settings.startText + '</a></div>'); 708 slider.controls.stop = $('<div class="bx-controls-auto-item"><a class="bx-stop" href="">' + slider.settings.stopText + '</a></div>'); 709 // add the controls to the DOM 710 slider.controls.autoEl = $('<div class="bx-controls-auto" />'); 711 // on click actions to the controls 712 slider.controls.autoEl.on('click', '.bx-start', clickStartBind); 713 slider.controls.autoEl.on('click', '.bx-stop', clickStopBind); 714 // if autoControlsCombine, insert only the "start" control 715 if (slider.settings.autoControlsCombine) { 716 slider.controls.autoEl.append(slider.controls.start); 717 // if autoControlsCombine is false, insert both controls 718 } else { 719 slider.controls.autoEl.append(slider.controls.start).append(slider.controls.stop); 720 } 721 // if auto controls selector was supplied, populate it with the controls 722 if (slider.settings.autoControlsSelector) { 723 $(slider.settings.autoControlsSelector).html(slider.controls.autoEl); 724 // if auto controls selector was not supplied, add it after the wrapper 725 } else { 726 slider.controls.el.addClass('bx-has-controls-auto').append(slider.controls.autoEl); 727 } 728 // update the auto controls 729 updateAutoControls(slider.settings.autoStart ? 'stop' : 'start'); 730 }; 731 732 /** 733 * Appends image captions to the DOM 734 */ 735 var appendCaptions = function() { 736 // cycle through each child 737 slider.children.each(function(index) { 738 // get the image title attribute 739 var title = $(this).find('img:first').attr('title'); 740 // append the caption 741 if (title !== undefined && ('' + title).length) { 742 $(this).append('<div class="bx-caption"><span>' + title + '</span></div>'); 743 } 744 }); 745 }; 746 747 /** 748 * Click next binding 749 * 750 * @param e (event) 751 * - DOM event object 752 */ 753 var clickNextBind = function(e) { 754 e.preventDefault(); 755 if (slider.controls.el.hasClass('disabled')) { return; } 756 // if auto show is running, stop it 757 if (slider.settings.auto && slider.settings.stopAutoOnClick) { el.stopAuto(); } 758 el.goToNextSlide(); 759 }; 760 761 /** 762 * Click prev binding 763 * 764 * @param e (event) 765 * - DOM event object 766 */ 767 var clickPrevBind = function(e) { 768 e.preventDefault(); 769 if (slider.controls.el.hasClass('disabled')) { return; } 770 // if auto show is running, stop it 771 if (slider.settings.auto && slider.settings.stopAutoOnClick) { el.stopAuto(); } 772 el.goToPrevSlide(); 773 }; 774 775 /** 776 * Click start binding 777 * 778 * @param e (event) 779 * - DOM event object 780 */ 781 var clickStartBind = function(e) { 782 el.startAuto(); 783 e.preventDefault(); 784 }; 785 786 /** 787 * Click stop binding 788 * 789 * @param e (event) 790 * - DOM event object 791 */ 792 var clickStopBind = function(e) { 793 el.stopAuto(); 794 e.preventDefault(); 795 }; 796 797 /** 798 * Click pager binding 799 * 800 * @param e (event) 801 * - DOM event object 802 */ 803 var clickPagerBind = function(e) { 804 var pagerLink, pagerIndex; 805 e.preventDefault(); 806 if (slider.controls.el.hasClass('disabled')) { 807 return; 808 } 809 // if auto show is running, stop it 810 if (slider.settings.auto && slider.settings.stopAutoOnClick) { el.stopAuto(); } 811 pagerLink = $(e.currentTarget); 812 if (pagerLink.attr('data-slide-index') !== undefined) { 813 pagerIndex = parseInt(pagerLink.attr('data-slide-index')); 814 // if clicked pager link is not active, continue with the goToSlide call 815 if (pagerIndex !== slider.active.index) { el.goToSlide(pagerIndex); } 816 } 817 }; 818 819 /** 820 * Updates the pager links with an active class 821 * 822 * @param slideIndex (int) 823 * - index of slide to make active 824 */ 825 var updatePagerActive = function(slideIndex) { 826 // if "short" pager type 827 var len = slider.children.length; // nb of children 828 if (slider.settings.pagerType === 'short') { 829 if (slider.settings.maxSlides > 1) { 830 len = Math.ceil(slider.children.length / slider.settings.maxSlides); 831 } 832 slider.pagerEl.html((slideIndex + 1) + slider.settings.pagerShortSeparator + len); 833 return; 834 } 835 // remove all pager active classes 836 slider.pagerEl.find('a').removeClass('active'); 837 // apply the active class for all pagers 838 slider.pagerEl.each(function(i, el) { $(el).find('a').eq(slideIndex).addClass('active'); }); 839 }; 840 841 /** 842 * Performs needed actions after a slide transition 843 */ 844 var updateAfterSlideTransition = function() { 845 // if infinite loop is true 846 if (slider.settings.infiniteLoop) { 847 var position = ''; 848 // first slide 849 if (slider.active.index === 0) { 850 // set the new position 851 position = slider.children.eq(0).position(); 852 // carousel, last slide 853 } else if (slider.active.index === getPagerQty() - 1 && slider.carousel) { 854 position = slider.children.eq((getPagerQty() - 1) * getMoveBy()).position(); 855 // last slide 856 } else if (slider.active.index === slider.children.length - 1) { 857 position = slider.children.eq(slider.children.length - 1).position(); 858 } 859 if (position) { 860 if (slider.settings.mode === 'horizontal') { setPositionProperty(-position.left, 'reset', 0); } 861 else if (slider.settings.mode === 'vertical') { setPositionProperty(-position.top, 'reset', 0); } 862 } 863 } 864 // declare that the transition is complete 865 slider.working = false; 866 // onSlideAfter callback 867 slider.settings.onSlideAfter.call(el, slider.children.eq(slider.active.index), slider.oldIndex, slider.active.index); 868 }; 869 870 /** 871 * Updates the auto controls state (either active, or combined switch) 872 * 873 * @param state (string) "start", "stop" 874 * - the new state of the auto show 875 */ 876 var updateAutoControls = function(state) { 877 // if autoControlsCombine is true, replace the current control with the new state 878 if (slider.settings.autoControlsCombine) { 879 slider.controls.autoEl.html(slider.controls[state]); 880 // if autoControlsCombine is false, apply the "active" class to the appropriate control 881 } else { 882 slider.controls.autoEl.find('a').removeClass('active'); 883 slider.controls.autoEl.find('a:not(.bx-' + state + ')').addClass('active'); 884 } 885 }; 886 887 /** 888 * Updates the direction controls (checks if either should be hidden) 889 */ 890 var updateDirectionControls = function() { 891 if (getPagerQty() === 1) { 892 slider.controls.prev.addClass('disabled'); 893 slider.controls.next.addClass('disabled'); 894 } else if (!slider.settings.infiniteLoop && slider.settings.hideControlOnEnd) { 895 // if first slide 896 if (slider.active.index === 0) { 897 slider.controls.prev.addClass('disabled'); 898 slider.controls.next.removeClass('disabled'); 899 // if last slide 900 } else if (slider.active.index === getPagerQty() - 1) { 901 slider.controls.next.addClass('disabled'); 902 slider.controls.prev.removeClass('disabled'); 903 // if any slide in the middle 904 } else { 905 slider.controls.prev.removeClass('disabled'); 906 slider.controls.next.removeClass('disabled'); 907 } 908 } 909 }; 910 /* auto start and stop functions */ 911 var windowFocusHandler = function() { el.startAuto(); }; 912 var windowBlurHandler = function() { el.stopAuto(); }; 913 /** 914 * Initializes the auto process 915 */ 916 var initAuto = function() { 917 // if autoDelay was supplied, launch the auto show using a setTimeout() call 918 if (slider.settings.autoDelay > 0) { 919 setTimeout(el.startAuto, slider.settings.autoDelay); 920 // if autoDelay was not supplied, start the auto show normally 921 } else { 922 el.startAuto(); 923 924 //add focus and blur events to ensure its running if timeout gets paused 925 $(window).focus(windowFocusHandler).blur(windowBlurHandler); 926 } 927 // if autoHover is requested 928 if (slider.settings.autoHover) { 929 // on el hover 930 el.hover(function() { 931 // if the auto show is currently playing (has an active interval) 932 if (slider.interval) { 933 // stop the auto show and pass true argument which will prevent control update 934 el.stopAuto(true); 935 // create a new autoPaused value which will be used by the relative "mouseout" event 936 slider.autoPaused = true; 937 } 938 }, function() { 939 // if the autoPaused value was created be the prior "mouseover" event 940 if (slider.autoPaused) { 941 // start the auto show and pass true argument which will prevent control update 942 el.startAuto(true); 943 // reset the autoPaused value 944 slider.autoPaused = null; 945 } 946 }); 947 } 948 }; 949 950 /** 951 * Initializes the ticker process 952 */ 953 var initTicker = function() { 954 var startPosition = 0, 955 position, transform, value, idx, ratio, property, newSpeed, totalDimens; 956 // if autoDirection is "next", append a clone of the entire slider 957 if (slider.settings.autoDirection === 'next') { 958 el.append(slider.children.clone().addClass('bx-clone')); 959 // if autoDirection is "prev", prepend a clone of the entire slider, and set the left position 960 } else { 961 el.prepend(slider.children.clone().addClass('bx-clone')); 962 position = slider.children.first().position(); 963 startPosition = slider.settings.mode === 'horizontal' ? -position.left : -position.top; 964 } 965 setPositionProperty(startPosition, 'reset', 0); 966 // do not allow controls in ticker mode 967 slider.settings.pager = false; 968 slider.settings.controls = false; 969 slider.settings.autoControls = false; 970 // if autoHover is requested 971 if (slider.settings.tickerHover) { 972 if (slider.usingCSS) { 973 idx = slider.settings.mode === 'horizontal' ? 4 : 5; 974 slider.viewport.hover(function() { 975 transform = el.css('-' + slider.cssPrefix + '-transform'); 976 value = parseFloat(transform.split(',')[idx]); 977 setPositionProperty(value, 'reset', 0); 978 }, function() { 979 totalDimens = 0; 980 slider.children.each(function(index) { 981 totalDimens += slider.settings.mode === 'horizontal' ? $(this).outerWidth(true) : $(this).outerHeight(true); 982 }); 983 // calculate the speed ratio (used to determine the new speed to finish the paused animation) 984 ratio = slider.settings.speed / totalDimens; 985 // determine which property to use 986 property = slider.settings.mode === 'horizontal' ? 'left' : 'top'; 987 // calculate the new speed 988 newSpeed = ratio * (totalDimens - (Math.abs(parseInt(value)))); 989 tickerLoop(newSpeed); 990 }); 991 } else { 992 // on el hover 993 slider.viewport.hover(function() { 994 el.stop(); 995 }, function() { 996 // calculate the total width of children (used to calculate the speed ratio) 997 totalDimens = 0; 998 slider.children.each(function(index) { 999 totalDimens += slider.settings.mode === 'horizontal' ? $(this).outerWidth(true) : $(this).outerHeight(true); 1000 }); 1001 // calculate the speed ratio (used to determine the new speed to finish the paused animation) 1002 ratio = slider.settings.speed / totalDimens; 1003 // determine which property to use 1004 property = slider.settings.mode === 'horizontal' ? 'left' : 'top'; 1005 // calculate the new speed 1006 newSpeed = ratio * (totalDimens - (Math.abs(parseInt(el.css(property))))); 1007 tickerLoop(newSpeed); 1008 }); 1009 } 1010 } 1011 // start the ticker loop 1012 tickerLoop(); 1013 }; 1014 1015 /** 1016 * Runs a continuous loop, news ticker-style 1017 */ 1018 var tickerLoop = function(resumeSpeed) { 1019 var speed = resumeSpeed ? resumeSpeed : slider.settings.speed, 1020 position = {left: 0, top: 0}, 1021 reset = {left: 0, top: 0}, 1022 animateProperty, resetValue, params; 1023 1024 // if "next" animate left position to last child, then reset left to 0 1025 if (slider.settings.autoDirection === 'next') { 1026 position = el.find('.bx-clone').first().position(); 1027 // if "prev" animate left position to 0, then reset left to first non-clone child 1028 } else { 1029 reset = slider.children.first().position(); 1030 } 1031 animateProperty = slider.settings.mode === 'horizontal' ? -position.left : -position.top; 1032 resetValue = slider.settings.mode === 'horizontal' ? -reset.left : -reset.top; 1033 params = {resetValue: resetValue}; 1034 setPositionProperty(animateProperty, 'ticker', speed, params); 1035 }; 1036 1037 /** 1038 * Check if el is on screen 1039 */ 1040 var isOnScreen = function(el) { 1041 var win = $(window), 1042 viewport = { 1043 top: win.scrollTop(), 1044 left: win.scrollLeft() 1045 }, 1046 bounds = el.offset(); 1047 1048 viewport.right = viewport.left + win.width(); 1049 viewport.bottom = viewport.top + win.height(); 1050 bounds.right = bounds.left + el.outerWidth(); 1051 bounds.bottom = bounds.top + el.outerHeight(); 1052 1053 return (!(viewport.right < bounds.left || viewport.left > bounds.right || viewport.bottom < bounds.top || viewport.top > bounds.bottom)); 1054 }; 1055 1056 /** 1057 * Initializes keyboard events 1058 */ 1059 var keyPress = function(e) { 1060 var activeElementTag = document.activeElement.tagName.toLowerCase(), 1061 tagFilters = 'input|textarea', 1062 p = new RegExp(activeElementTag,['i']), 1063 result = p.exec(tagFilters); 1064 1065 if (result == null && isOnScreen(el)) { 1066 if (e.keyCode === 39) { 1067 clickNextBind(e); 1068 return false; 1069 } else if (e.keyCode === 37) { 1070 clickPrevBind(e); 1071 return false; 1072 } 1073 } 1074 }; 1075 1076 /** 1077 * Initializes touch events 1078 */ 1079 var initTouch = function() { 1080 // initialize object to contain all touch values 1081 slider.touch = { 1082 start: {x: 0, y: 0}, 1083 end: {x: 0, y: 0} 1084 }; 1085 slider.viewport.on('touchstart MSPointerDown pointerdown', onTouchStart); 1086 1087 //for browsers that have implemented pointer events and fire a click after 1088 //every pointerup regardless of whether pointerup is on same screen location as pointerdown or not 1089 slider.viewport.on('click', '.bxslider a', function(e) { 1090 if (slider.viewport.hasClass('click-disabled')) { 1091 e.preventDefault(); 1092 slider.viewport.removeClass('click-disabled'); 1093 } 1094 }); 1095 }; 1096 1097 /** 1098 * Event handler for "touchstart" 1099 * 1100 * @param e (event) 1101 * - DOM event object 1102 */ 1103 var onTouchStart = function(e) { 1104 // watch only for left mouse, touch contact and pen contact 1105 // touchstart event object doesn`t have button property 1106 if (e.type !== 'touchstart' && e.button !== 0) { 1107 return; 1108 } 1109 e.preventDefault(); 1110 //disable slider controls while user is interacting with slides to avoid slider freeze that happens on touch devices when a slide swipe happens immediately after interacting with slider controls 1111 slider.controls.el.addClass('disabled'); 1112 1113 if (slider.working) { 1114 slider.controls.el.removeClass('disabled'); 1115 } else { 1116 // record the original position when touch starts 1117 slider.touch.originalPos = el.position(); 1118 var orig = e.originalEvent, 1119 touchPoints = (typeof orig.changedTouches !== 'undefined') ? orig.changedTouches : [orig]; 1120 var chromePointerEvents = typeof PointerEvent === 'function'; 1121 if (chromePointerEvents) { 1122 if (orig.pointerId === undefined) { 1123 return; 1124 } 1125 } 1126 // record the starting touch x, y coordinates 1127 slider.touch.start.x = touchPoints[0].pageX; 1128 slider.touch.start.y = touchPoints[0].pageY; 1129 1130 if (slider.viewport.get(0).setPointerCapture) { 1131 slider.pointerId = orig.pointerId; 1132 slider.viewport.get(0).setPointerCapture(slider.pointerId); 1133 } 1134 // store original event data for click fixation 1135 slider.originalClickTarget = orig.originalTarget || orig.target; 1136 slider.originalClickButton = orig.button; 1137 slider.originalClickButtons = orig.buttons; 1138 slider.originalEventType = orig.type; 1139 // at this moment we don`t know what it is click or swipe 1140 slider.hasMove = false; 1141 // on a "touchmove" event to the viewport 1142 slider.viewport.on('touchmove MSPointerMove pointermove', onTouchMove); 1143 // on a "touchend" event to the viewport 1144 slider.viewport.on('touchend MSPointerUp pointerup', onTouchEnd); 1145 slider.viewport.on('MSPointerCancel pointercancel', onPointerCancel); 1146 } 1147 }; 1148 1149 /** 1150 * Cancel Pointer for Windows Phone 1151 * 1152 * @param e (event) 1153 * - DOM event object 1154 */ 1155 var onPointerCancel = function(e) { 1156 e.preventDefault(); 1157 /* onPointerCancel handler is needed to deal with situations when a touchend 1158 doesn't fire after a touchstart (this happens on windows phones only) */ 1159 setPositionProperty(slider.touch.originalPos.left, 'reset', 0); 1160 1161 //remove handlers 1162 slider.controls.el.removeClass('disabled'); 1163 slider.viewport.off('MSPointerCancel pointercancel', onPointerCancel); 1164 slider.viewport.off('touchmove MSPointerMove pointermove', onTouchMove); 1165 slider.viewport.off('touchend MSPointerUp pointerup', onTouchEnd); 1166 if (slider.viewport.get(0).releasePointerCapture) { 1167 slider.viewport.get(0).releasePointerCapture(slider.pointerId); 1168 } 1169 }; 1170 1171 /** 1172 * Event handler for "touchmove" 1173 * 1174 * @param e (event) 1175 * - DOM event object 1176 */ 1177 var onTouchMove = function(e) { 1178 var orig = e.originalEvent, 1179 touchPoints = (typeof orig.changedTouches !== 'undefined') ? orig.changedTouches : [orig], 1180 // if scrolling on y axis, do not prevent default 1181 xMovement = Math.abs(touchPoints[0].pageX - slider.touch.start.x), 1182 yMovement = Math.abs(touchPoints[0].pageY - slider.touch.start.y), 1183 value = 0, 1184 change = 0; 1185 // this is swipe 1186 slider.hasMove = true; 1187 1188 // x axis swipe 1189 if ((xMovement * 3) > yMovement && slider.settings.preventDefaultSwipeX) { 1190 e.preventDefault(); 1191 // y axis swipe 1192 } else if ((yMovement * 3) > xMovement && slider.settings.preventDefaultSwipeY) { 1193 e.preventDefault(); 1194 } 1195 if (e.type !== 'touchmove') { 1196 e.preventDefault(); 1197 } 1198 1199 if (slider.settings.mode !== 'fade' && slider.settings.oneToOneTouch) { 1200 // if horizontal, drag along x axis 1201 if (slider.settings.mode === 'horizontal') { 1202 change = touchPoints[0].pageX - slider.touch.start.x; 1203 value = slider.touch.originalPos.left + change; 1204 // if vertical, drag along y axis 1205 } else { 1206 change = touchPoints[0].pageY - slider.touch.start.y; 1207 value = slider.touch.originalPos.top + change; 1208 } 1209 setPositionProperty(value, 'reset', 0); 1210 } 1211 }; 1212 1213 /** 1214 * Event handler for "touchend" 1215 * 1216 * @param e (event) 1217 * - DOM event object 1218 */ 1219 var onTouchEnd = function(e) { 1220 e.preventDefault(); 1221 slider.viewport.off('touchmove MSPointerMove pointermove', onTouchMove); 1222 //enable slider controls as soon as user stops interacing with slides 1223 slider.controls.el.removeClass('disabled'); 1224 var orig = e.originalEvent, 1225 touchPoints = (typeof orig.changedTouches !== 'undefined') ? orig.changedTouches : [orig], 1226 value = 0, 1227 distance = 0; 1228 // record end x, y positions 1229 slider.touch.end.x = touchPoints[0].pageX; 1230 slider.touch.end.y = touchPoints[0].pageY; 1231 // if fade mode, check if absolute x distance clears the threshold 1232 if (slider.settings.mode === 'fade') { 1233 distance = Math.abs(slider.touch.start.x - slider.touch.end.x); 1234 if (distance >= slider.settings.swipeThreshold) { 1235 if (slider.touch.start.x > slider.touch.end.x) { 1236 el.goToNextSlide(); 1237 } else { 1238 el.goToPrevSlide(); 1239 } 1240 el.stopAuto(); 1241 } 1242 // not fade mode 1243 } else { 1244 // calculate distance and el's animate property 1245 if (slider.settings.mode === 'horizontal') { 1246 distance = slider.touch.end.x - slider.touch.start.x; 1247 value = slider.touch.originalPos.left; 1248 } else { 1249 distance = slider.touch.end.y - slider.touch.start.y; 1250 value = slider.touch.originalPos.top; 1251 } 1252 // if not infinite loop and first / last slide, do not attempt a slide transition 1253 if (!slider.settings.infiniteLoop && ((slider.active.index === 0 && distance > 0) || (slider.active.last && distance < 0))) { 1254 setPositionProperty(value, 'reset', 200); 1255 } else { 1256 // check if distance clears threshold 1257 if (Math.abs(distance) >= slider.settings.swipeThreshold) { 1258 if (distance < 0) { 1259 el.goToNextSlide(); 1260 } else { 1261 el.goToPrevSlide(); 1262 } 1263 el.stopAuto(); 1264 } else { 1265 // el.animate(property, 200); 1266 setPositionProperty(value, 'reset', 200); 1267 } 1268 } 1269 } 1270 slider.viewport.off('touchend MSPointerUp pointerup', onTouchEnd); 1271 1272 if (slider.viewport.get(0).releasePointerCapture) { 1273 slider.viewport.get(0).releasePointerCapture(slider.pointerId); 1274 } 1275 // if slider had swipe with left mouse, touch contact and pen contact 1276 if (slider.hasMove === false && (slider.originalClickButton === 0 || slider.originalEventType === 'touchstart')) { 1277 // trigger click event (fix for Firefox59 and PointerEvent standard compatibility) 1278 $(slider.originalClickTarget).trigger({ 1279 type: 'click', 1280 button: slider.originalClickButton, 1281 buttons: slider.originalClickButtons 1282 }); 1283 } 1284 }; 1285 1286 /** 1287 * Window resize event callback 1288 */ 1289 var resizeWindow = function(e) { 1290 // don't do anything if slider isn't initialized. 1291 if (!slider.initialized) { return; } 1292 // Delay if slider working. 1293 if (slider.working) { 1294 window.setTimeout(resizeWindow, 10); 1295 } else { 1296 // get the new window dimens (again, thank you IE) 1297 var windowWidthNew = $(window).width(), 1298 windowHeightNew = $(window).height(); 1299 // make sure that it is a true window resize 1300 // *we must check this because our dinosaur friend IE fires a window resize event when certain DOM elements 1301 // are resized. Can you just die already?* 1302 if (windowWidth !== windowWidthNew || windowHeight !== windowHeightNew) { 1303 // set the new window dimens 1304 windowWidth = windowWidthNew; 1305 windowHeight = windowHeightNew; 1306 // update all dynamic elements 1307 el.redrawSlider(); 1308 // Call user resize handler 1309 slider.settings.onSliderResize.call(el, slider.active.index); 1310 } 1311 } 1312 }; 1313 1314 /** 1315 * Adds an aria-hidden=true attribute to each element 1316 * 1317 * @param startVisibleIndex (int) 1318 * - the first visible element's index 1319 */ 1320 var applyAriaHiddenAttributes = function(startVisibleIndex) { 1321 var numberOfSlidesShowing = getNumberSlidesShowing(); 1322 // only apply attributes if the setting is enabled and not in ticker mode 1323 if (slider.settings.ariaHidden && !slider.settings.ticker) { 1324 // add aria-hidden=true to all elements 1325 slider.children.attr('aria-hidden', 'true'); 1326 // get the visible elements and change to aria-hidden=false 1327 slider.children.slice(startVisibleIndex, startVisibleIndex + numberOfSlidesShowing).attr('aria-hidden', 'false'); 1328 } 1329 }; 1330 1331 /** 1332 * Returns index according to present page range 1333 * 1334 * @param slideOndex (int) 1335 * - the desired slide index 1336 */ 1337 var setSlideIndex = function(slideIndex) { 1338 if (slideIndex < 0) { 1339 if (slider.settings.infiniteLoop) { 1340 return getPagerQty() - 1; 1341 }else { 1342 //we don't go to undefined slides 1343 return slider.active.index; 1344 } 1345 // if slideIndex is greater than children length, set active index to 0 (this happens during infinite loop) 1346 } else if (slideIndex >= getPagerQty()) { 1347 if (slider.settings.infiniteLoop) { 1348 return 0; 1349 } else { 1350 //we don't move to undefined pages 1351 return slider.active.index; 1352 } 1353 // set active index to requested slide 1354 } else { 1355 return slideIndex; 1356 } 1357 }; 1358 1359 /** 1360 * =================================================================================== 1361 * = PUBLIC FUNCTIONS 1362 * =================================================================================== 1363 */ 1364 1365 /** 1366 * Performs slide transition to the specified slide 1367 * 1368 * @param slideIndex (int) 1369 * - the destination slide's index (zero-based) 1370 * 1371 * @param direction (string) 1372 * - INTERNAL USE ONLY - the direction of travel ("prev" / "next") 1373 */ 1374 el.goToSlide = function(slideIndex, direction) { 1375 // onSlideBefore, onSlideNext, onSlidePrev callbacks 1376 // Allow transition canceling based on returned value 1377 var performTransition = true, 1378 moveBy = 0, 1379 position = {left: 0, top: 0}, 1380 lastChild = null, 1381 lastShowingIndex, eq, value, requestEl; 1382 // store the old index 1383 slider.oldIndex = slider.active.index; 1384 //set new index 1385 slider.active.index = setSlideIndex(slideIndex); 1386 1387 // if plugin is currently in motion, ignore request 1388 if (slider.working || slider.active.index === slider.oldIndex) { return; } 1389 // declare that plugin is in motion 1390 slider.working = true; 1391 1392 performTransition = slider.settings.onSlideBefore.call(el, slider.children.eq(slider.active.index), slider.oldIndex, slider.active.index); 1393 1394 // If transitions canceled, reset and return 1395 if (typeof (performTransition) !== 'undefined' && !performTransition) { 1396 slider.active.index = slider.oldIndex; // restore old index 1397 slider.working = false; // is not in motion 1398 return; 1399 } 1400 1401 if (direction === 'next') { 1402 // Prevent canceling in future functions or lack there-of from negating previous commands to cancel 1403 if (!slider.settings.onSlideNext.call(el, slider.children.eq(slider.active.index), slider.oldIndex, slider.active.index)) { 1404 performTransition = false; 1405 } 1406 } else if (direction === 'prev') { 1407 // Prevent canceling in future functions or lack there-of from negating previous commands to cancel 1408 if (!slider.settings.onSlidePrev.call(el, slider.children.eq(slider.active.index), slider.oldIndex, slider.active.index)) { 1409 performTransition = false; 1410 } 1411 } 1412 1413 // check if last slide 1414 slider.active.last = slider.active.index >= getPagerQty() - 1; 1415 // update the pager with active class 1416 if (slider.settings.pager || slider.settings.pagerCustom) { updatePagerActive(slider.active.index); } 1417 // // check for direction control update 1418 if (slider.settings.controls) { updateDirectionControls(); } 1419 // if slider is set to mode: "fade" 1420 if (slider.settings.mode === 'fade') { 1421 // if adaptiveHeight is true and next height is different from current height, animate to the new height 1422 if (slider.settings.adaptiveHeight && slider.viewport.height() !== getViewportHeight()) { 1423 slider.viewport.animate({height: getViewportHeight()}, slider.settings.adaptiveHeightSpeed); 1424 } 1425 // fade out the visible child and reset its z-index value 1426 slider.children.filter(':visible').fadeOut(slider.settings.speed).css({zIndex: 0}); 1427 // fade in the newly requested slide 1428 slider.children.eq(slider.active.index).css('zIndex', slider.settings.slideZIndex + 1).fadeIn(slider.settings.speed, function() { 1429 $(this).css('zIndex', slider.settings.slideZIndex); 1430 updateAfterSlideTransition(); 1431 }); 1432 // slider mode is not "fade" 1433 } else { 1434 // if adaptiveHeight is true and next height is different from current height, animate to the new height 1435 if (slider.settings.adaptiveHeight && slider.viewport.height() !== getViewportHeight()) { 1436 slider.viewport.animate({height: getViewportHeight()}, slider.settings.adaptiveHeightSpeed); 1437 } 1438 // if carousel and not infinite loop 1439 if (!slider.settings.infiniteLoop && slider.carousel && slider.active.last) { 1440 if (slider.settings.mode === 'horizontal') { 1441 // get the last child position 1442 lastChild = slider.children.eq(slider.children.length - 1); 1443 position = lastChild.position(); 1444 // calculate the position of the last slide 1445 moveBy = slider.viewport.width() - lastChild.outerWidth(); 1446 } else { 1447 // get last showing index position 1448 lastShowingIndex = slider.children.length - slider.settings.minSlides; 1449 position = slider.children.eq(lastShowingIndex).position(); 1450 } 1451 // horizontal carousel, going previous while on first slide (infiniteLoop mode) 1452 } else if (slider.carousel && slider.active.last && direction === 'prev') { 1453 // get the last child position 1454 eq = slider.settings.moveSlides === 1 ? slider.settings.maxSlides - getMoveBy() : ((getPagerQty() - 1) * getMoveBy()) - (slider.children.length - slider.settings.maxSlides); 1455 lastChild = el.children('.bx-clone').eq(eq); 1456 position = lastChild.position(); 1457 // if infinite loop and "Next" is clicked on the last slide 1458 } else if (direction === 'next' && slider.active.index === 0) { 1459 // get the last clone position 1460 position = el.find('> .bx-clone').eq(slider.settings.maxSlides).position(); 1461 slider.active.last = false; 1462 // normal non-zero requests 1463 } else if (slideIndex >= 0) { 1464 //parseInt is applied to allow floats for slides/page 1465 requestEl = slideIndex * parseInt(getMoveBy()); 1466 position = slider.children.eq(requestEl).position(); 1467 } 1468 1469 /* If the position doesn't exist 1470 * (e.g. if you destroy the slider on a next click), 1471 * it doesn't throw an error. 1472 */ 1473 if (typeof (position) !== 'undefined') { 1474 value = slider.settings.mode === 'horizontal' ? -(position.left - moveBy) : -position.top; 1475 // plugin values to be animated 1476 setPositionProperty(value, 'slide', slider.settings.speed); 1477 } 1478 slider.working = false; 1479 } 1480 if (slider.settings.ariaHidden) { applyAriaHiddenAttributes(slider.active.index * getMoveBy()); } 1481 }; 1482 1483 /** 1484 * Transitions to the next slide in the show 1485 */ 1486 el.goToNextSlide = function() { 1487 // if infiniteLoop is false and last page is showing, disregard call 1488 if (!slider.settings.infiniteLoop && slider.active.last) { return; } 1489 if (slider.working === true){ return ;} 1490 var pagerIndex = parseInt(slider.active.index) + 1; 1491 el.goToSlide(pagerIndex, 'next'); 1492 }; 1493 1494 /** 1495 * Transitions to the prev slide in the show 1496 */ 1497 el.goToPrevSlide = function() { 1498 // if infiniteLoop is false and last page is showing, disregard call 1499 if (!slider.settings.infiniteLoop && slider.active.index === 0) { return; } 1500 if (slider.working === true){ return ;} 1501 var pagerIndex = parseInt(slider.active.index) - 1; 1502 el.goToSlide(pagerIndex, 'prev'); 1503 }; 1504 1505 /** 1506 * Starts the auto show 1507 * 1508 * @param preventControlUpdate (boolean) 1509 * - if true, auto controls state will not be updated 1510 */ 1511 el.startAuto = function(preventControlUpdate) { 1512 // if an interval already exists, disregard call 1513 if (slider.interval) { return; } 1514 // create an interval 1515 slider.interval = setInterval(function() { 1516 if (slider.settings.autoDirection === 'next') { 1517 el.goToNextSlide(); 1518 } else { 1519 el.goToPrevSlide(); 1520 } 1521 }, slider.settings.pause); 1522 //allback for when the auto rotate status changes 1523 slider.settings.onAutoChange.call(el, true); 1524 // if auto controls are displayed and preventControlUpdate is not true 1525 if (slider.settings.autoControls && preventControlUpdate !== true) { updateAutoControls('stop'); } 1526 }; 1527 1528 /** 1529 * Stops the auto show 1530 * 1531 * @param preventControlUpdate (boolean) 1532 * - if true, auto controls state will not be updated 1533 */ 1534 el.stopAuto = function(preventControlUpdate) { 1535 // if slider is auto paused, just clear that state 1536 if (slider.autoPaused) slider.autoPaused = false; 1537 // if no interval exists, disregard call 1538 if (!slider.interval) { return; } 1539 // clear the interval 1540 clearInterval(slider.interval); 1541 slider.interval = null; 1542 //allback for when the auto rotate status changes 1543 slider.settings.onAutoChange.call(el, false); 1544 // if auto controls are displayed and preventControlUpdate is not true 1545 if (slider.settings.autoControls && preventControlUpdate !== true) { updateAutoControls('start'); } 1546 }; 1547 1548 /** 1549 * Returns current slide index (zero-based) 1550 */ 1551 el.getCurrentSlide = function() { 1552 return slider.active.index; 1553 }; 1554 1555 /** 1556 * Returns current slide element 1557 */ 1558 el.getCurrentSlideElement = function() { 1559 return slider.children.eq(slider.active.index); 1560 }; 1561 1562 /** 1563 * Returns a slide element 1564 * @param index (int) 1565 * - The index (zero-based) of the element you want returned. 1566 */ 1567 el.getSlideElement = function(index) { 1568 return slider.children.eq(index); 1569 }; 1570 1571 /** 1572 * Returns number of slides in show 1573 */ 1574 el.getSlideCount = function() { 1575 return slider.children.length; 1576 }; 1577 1578 /** 1579 * Return slider.working variable 1580 */ 1581 el.isWorking = function() { 1582 return slider.working; 1583 }; 1584 1585 /** 1586 * Update all dynamic slider elements 1587 */ 1588 el.redrawSlider = function() { 1589 // resize all children in ratio to new screen size 1590 slider.children.add(el.find('.bx-clone')).outerWidth(getSlideWidth()); 1591 // adjust the height 1592 slider.viewport.css('height', getViewportHeight()); 1593 // update the slide position 1594 if (!slider.settings.ticker) { setSlidePosition(); } 1595 // if active.last was true before the screen resize, we want 1596 // to keep it last no matter what screen size we end on 1597 if (slider.active.last) { slider.active.index = getPagerQty() - 1; } 1598 // if the active index (page) no longer exists due to the resize, simply set the index as last 1599 if (slider.active.index >= getPagerQty()) { slider.active.last = true; } 1600 // if a pager is being displayed and a custom pager is not being used, update it 1601 if (slider.settings.pager && !slider.settings.pagerCustom) { 1602 populatePager(); 1603 updatePagerActive(slider.active.index); 1604 } 1605 if (slider.settings.ariaHidden) { applyAriaHiddenAttributes(slider.active.index * getMoveBy()); } 1606 }; 1607 1608 /** 1609 * Destroy the current instance of the slider (revert everything back to original state) 1610 */ 1611 el.destroySlider = function() { 1612 // don't do anything if slider has already been destroyed 1613 if (!slider.initialized) { return; } 1614 slider.initialized = false; 1615 $('.bx-clone', this).remove(); 1616 slider.children.each(function() { 1617 if ($(this).data('origStyle') !== undefined) { 1618 $(this).attr('style', $(this).data('origStyle')); 1619 } else { 1620 $(this).removeAttr('style'); 1621 } 1622 }); 1623 if ($(this).data('origStyle') !== undefined) { 1624 this.attr('style', $(this).data('origStyle')); 1625 } else { 1626 $(this).removeAttr('style'); 1627 } 1628 $(this).unwrap().unwrap(); 1629 if (slider.controls.el) { slider.controls.el.remove(); } 1630 if (slider.controls.next) { slider.controls.next.remove(); } 1631 if (slider.controls.prev) { slider.controls.prev.remove(); } 1632 if (slider.pagerEl && slider.settings.controls && !slider.settings.pagerCustom) { slider.pagerEl.remove(); } 1633 $('.bx-caption', this).remove(); 1634 if (slider.controls.autoEl) { slider.controls.autoEl.remove(); } 1635 clearInterval(slider.interval); 1636 if (slider.settings.responsive) { $(window).off('resize', resizeWindow); } 1637 if (slider.settings.keyboardEnabled) { $(document).off('keydown', keyPress); } 1638 //remove self reference in data 1639 $(this).removeData('bxSlider'); 1640 // remove global window handlers 1641 $(window).off('blur', windowBlurHandler).off('focus', windowFocusHandler); 1642 }; 1643 1644 /** 1645 * Reload the slider (revert all DOM changes, and re-initialize) 1646 */ 1647 el.reloadSlider = function(settings) { 1648 if (settings !== undefined) { options = settings; } 1649 el.destroySlider(); 1650 init(); 1651 //store reference to self in order to access public functions later 1652 $(el).data('bxSlider', this); 1653 }; 1654 1655 init(); 1656 1657 $(el).data('bxSlider', this); 1658 1659 // returns the current jQuery object 1660 return this; 1661 }; 1662 1663 })(jQuery);
Line numbers count LF bytes from the start of the resource, as the search results do. Vendor segments are library code the classifier recognised; they are stored but not indexed. Bytes are shown as Latin1 characters, one per byte.