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https://thecountbasieorchestra.com/wp-content/themes/rpf/assets/lightbox2/js/lightbox.js?ver=7.0.4

js thecountbasieorchestra.com collected 2026-10-02 11:04:55 UTC 17,108 bytes, 474 lines download raw bytes

vendor: 4,620 bytes, lines 1-113
1/*!
2 * Lightbox v2.8.2
3 * by Lokesh Dhakar
4 *
5 * More info:
6 * http://lokeshdhakar.com/projects/lightbox2/
7 *
8 * Copyright 2007, 2015 Lokesh Dhakar
9 * Released under the MIT license
10 * https://github.com/lokesh/lightbox2/blob/master/LICENSE
11 */
12
13// Uses Node, AMD or browser globals to create a module.
14(function (root, factory) {
15    if (typeof define === 'function' && define.amd) {
16        // AMD. Register as an anonymous module.
17        define(['jquery'], factory);
18    } else if (typeof exports === 'object') {
19        // Node. Does not work with strict CommonJS, but
20        // only CommonJS-like environments that support module.exports,
21        // like Node.
22        module.exports = factory(require('jquery'));
23    } else {
24        // Browser globals (root is window)
25        root.lightbox = factory(root.jQuery);
26    }
27}(this, function ($) {
28
29  function Lightbox(options) {
30    this.album = [];
31    this.currentImageIndex = void 0;
32    this.init();
33
34    // options
35    this.options = $.extend({}, this.constructor.defaults);
36    this.option(options);
37  }
38
39  // Descriptions of all options available on the demo site:
40  // http://lokeshdhakar.com/projects/lightbox2/index.html#options
41  Lightbox.defaults = {
42    albumLabel: '%1 / %2',
43    alwaysShowNavOnTouchDevices: false,
44    fadeDuration: 500,
45    fitImagesInViewport: true,
46    // maxWidth: 800,
47    // maxHeight: 600,
48    positionFromTop: 50,
49    resizeDuration: 700,
50    showImageNumberLabel: true,
51    wrapAround: false,
52    disableScrolling: false
53  };
54
55  Lightbox.prototype.option = function(options) {
56    $.extend(this.options, options);
57  };
58
59  Lightbox.prototype.imageCountLabel = function(currentImageNum, totalImages) {
60    return this.options.albumLabel.replace(/%1/g, currentImageNum).replace(/%2/g, totalImages);
61  };
62
63  Lightbox.prototype.init = function() {
64    this.enable();
65    this.build();
66  };
67
68  // Loop through anchors and areamaps looking for either data-lightbox attributes or rel attributes
69  // that contain 'lightbox'. When these are clicked, start lightbox.
70  Lightbox.prototype.enable = function() {
71    var self = this;
72    $('body').on('click', 'a[rel^=lightbox], area[rel^=lightbox], a[data-lightbox], area[data-lightbox]', function(event) {
73      self.start($(event.currentTarget));
74      return false;
75    });
76  };
77
78  // Build html for the lightbox and the overlay.
79  // Attach event handlers to the new DOM elements. click click click
80  Lightbox.prototype.build = function() {
81    var self = this;
82    $('<div id="lightboxOverlay" class="lightboxOverlay"></div><div id="lightbox" class="lightbox"><div class="lb-outerContainer"><div class="lb-container"><img class="lb-image" src="data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==" /><div class="lb-nav"><a class="lb-prev" href="" ></a><a class="lb-next" href="" ></a></div><div class="lb-loader"><a class="lb-cancel"></a></div></div></div><div class="lb-dataContainer"><div class="lb-data"><div class="lb-details"><span class="lb-caption"></span><span class="lb-number"></span></div><div class="lb-closeContainer"><a class="lb-close"></a></div></div></div></div>').appendTo($('body'));
83
84    // Cache jQuery objects
85    this.$lightbox       = $('#lightbox');
86    this.$overlay        = $('#lightboxOverlay');
87    this.$outerContainer = this.$lightbox.find('.lb-outerContainer');
88    this.$container      = this.$lightbox.find('.lb-container');
89
90    // Store css values for future lookup
91    this.containerTopPadding = parseInt(this.$container.css('padding-top'), 10);
92    this.containerRightPadding = parseInt(this.$container.css('padding-right'), 10);
93    this.containerBottomPadding = parseInt(this.$container.css('padding-bottom'), 10);
94    this.containerLeftPadding = parseInt(this.$container.css('padding-left'), 10);
95
96    // Attach event handlers to the newly minted DOM elements
97    this.$overlay.hide().on('click', function() {
98      self.end();
99      return false;
100    });
101
102    this.$lightbox.hide().on('click', function(event) {
103      if ($(event.target).attr('id') === 'lightbox') {
104        self.end();
105      }
106      /* SWP intercept the click on download button [[[ */
107      else if ($(event.target).attr('id') === 'swp_lightbox_downbutton') {
108        $(event.target).attr('href', $(event.target).closest('#lightbox').find('.lb-image').attr('src'));
109        $(event.target).dispatchEvent('onclick');        
110      }      
111      /* SWP intercept the click on download button ]]] */
112      return false;
113    });
114
115    this.$outerContainer.on('click', function(event) {
116      if ($(event.target).attr('id') === 'lightbox') {
117        self.end();
118      }
119      return false;
120    });
121
122    this.$lightbox.find('.lb-prev').on('click', function() {
123      if (self.currentImageIndex === 0) {
124        self.changeImage(self.album.length - 1);
125      } else {
126        self.changeImage(self.currentImageIndex - 1);
127      }
128      return false;
129    });
130
131    this.$lightbox.find('.lb-next').on('click', function() {
132      if (self.currentImageIndex === self.album.length - 1) {
133        self.changeImage(0);
134      } else {
135        self.changeImage(self.currentImageIndex + 1);
136      }
137      return false;
138    });
139
140    this.$lightbox.find('.lb-loader, .lb-close').on('click', function() {
141      self.end();
142      return false;
143    });
144  };
145
146  // Show overlay and lightbox. If the image is part of a set, add siblings to album array.
147  Lightbox.prototype.start = function($link) {
148    var self    = this;
149    var $window = $(window);
150
151    $window.on('resize', $.proxy(this.sizeOverlay, this));
152
153    $('select, object, embed').css({
154      visibility: 'hidden'
155    });
156
157    this.sizeOverlay();
158
159    this.album = [];
160    var imageNumber = 0;
161
162    function addToAlbum($link) {
163      self.album.push({
164        link: $link.attr('href'),
165        title: $link.attr('data-title') || $link.attr('title')
166      });
167    }
168
169    // Support both data-lightbox attribute and rel attribute implementations
170    var dataLightboxValue = $link.attr('data-lightbox');
171    var $links;
172
173    if (dataLightboxValue) {
174      $links = $($link.prop('tagName') + '[data-lightbox="' + dataLightboxValue + '"]');
175      for (var i = 0; i < $links.length; i = ++i) {
176        addToAlbum($($links[i]));
177        if ($links[i] === $link[0]) {
178          imageNumber = i;
179        }
180      }
181    } else {
182      if ($link.attr('rel') === 'lightbox') {
183        // If image is not part of a set
184        addToAlbum($link);
185      } else {
186        // If image is part of a set
187        $links = $($link.prop('tagName') + '[rel="' + $link.attr('rel') + '"]');
188        for (var j = 0; j < $links.length; j = ++j) {
189          addToAlbum($($links[j]));
190          if ($links[j] === $link[0]) {
191            imageNumber = j;
192          }
193        }
194      }
195    }
196
197    // Position Lightbox
198    var top  = $window.scrollTop() + this.options.positionFromTop;
199    var left = $window.scrollLeft();
200    this.$lightbox.css({
201      top: top + 'px',
202      left: left + 'px'
203    }).fadeIn(this.options.fadeDuration);
204
205    /* SWP add download button [[[*/
206    if(IsDownloadButtonEnabled($link))
207    {
208      $('.lb-details').find('.swp_lightbox_downbutton').remove();
209      $('.lb-number').before('<div class="swp_lightbox_downbutton"><a id="swp_lightbox_downbutton" href="" download>Download</a></div>');      
210    }
211    /* SWP add download button ]]]*/
212
213    // Disable scrolling of the page while open
214    if (this.options.disableScrolling) {
215      $('body').addClass('lb-disable-scrolling');
216    }
217
218    this.changeImage(imageNumber);
219  };
220
221  // Hide most UI elements in preparation for the animated resizing of the lightbox.
222  Lightbox.prototype.changeImage = function(imageNumber) {
223    var self = this;
224
225    this.disableKeyboardNav();
226    var $image = this.$lightbox.find('.lb-image');
227
228    this.$overlay.fadeIn(this.options.fadeDuration);
229
230    $('.lb-loader').fadeIn('slow');
231    this.$lightbox.find('.lb-image, .lb-nav, .lb-prev, .lb-next, .lb-dataContainer, .lb-numbers, .lb-caption').hide();
232
233    this.$outerContainer.addClass('animating');
234
235    // When image to show is preloaded, we send the width and height to sizeContainer()
236    var preloader = new Image();
237    preloader.onload = function() {
238      var $preloader;
239      var imageHeight;
240      var imageWidth;
241      var maxImageHeight;
242      var maxImageWidth;
243      var windowHeight;
244      var windowWidth;
245
246      $image.attr('src', self.album[imageNumber].link);
247
248      $preloader = $(preloader);
249
250      $image.width(preloader.width);
251      $image.height(preloader.height);
252
253      if (self.options.fitImagesInViewport) {
254        // Fit image inside the viewport.
255        // Take into account the border around the image and an additional 10px gutter on each side.
256
257        windowWidth    = $(window).width();
258        windowHeight   = $(window).height();
259        maxImageWidth  = windowWidth - self.containerLeftPadding - self.containerRightPadding - 20;
260        maxImageHeight = windowHeight - self.containerTopPadding - self.containerBottomPadding - 120;
261
262        // Check if image size is larger then maxWidth|maxHeight in settings
263        if (self.options.maxWidth && self.options.maxWidth < maxImageWidth) {
264          maxImageWidth = self.options.maxWidth;
265        }
266        if (self.options.maxHeight && self.options.maxHeight < maxImageWidth) {
267          maxImageHeight = self.options.maxHeight;
268        }
269
270        // Is there a fitting issue?
271        if ((preloader.width > maxImageWidth) || (preloader.height > maxImageHeight)) {
272          if ((preloader.width / maxImageWidth) > (preloader.height / maxImageHeight)) {
273            imageWidth  = maxImageWidth;
274            imageHeight = parseInt(preloader.height / (preloader.width / imageWidth), 10);
275            $image.width(imageWidth);
276            $image.height(imageHeight);
277          } else {
278            imageHeight = maxImageHeight;
279            imageWidth = parseInt(preloader.width / (preloader.height / imageHeight), 10);
280            $image.width(imageWidth);
281            $image.height(imageHeight);
282          }
283        }
284      }
285      self.sizeContainer($image.width(), $image.height());
286    };
287
288    preloader.src          = this.album[imageNumber].link;
289    this.currentImageIndex = imageNumber;
290  };
291
292  // Stretch overlay to fit the viewport
293  Lightbox.prototype.sizeOverlay = function() {
294    this.$overlay
295      .width($(document).width())
296      .height($(document).height());
297  };
298
299  // Animate the size of the lightbox to fit the image we are showing
300  Lightbox.prototype.sizeContainer = function(imageWidth, imageHeight) {
301    var self = this;
302
303    var oldWidth  = this.$outerContainer.outerWidth();
304    var oldHeight = this.$outerContainer.outerHeight();
305    var newWidth  = imageWidth + this.containerLeftPadding + this.containerRightPadding;
306    var newHeight = imageHeight + this.containerTopPadding + this.containerBottomPadding;
307
308    function postResize() {
309      self.$lightbox.find('.lb-dataContainer').width(newWidth);
310      self.$lightbox.find('.lb-prevLink').height(newHeight);
311      self.$lightbox.find('.lb-nextLink').height(newHeight);
312      self.showImage();
313    }
314
315    if (oldWidth !== newWidth || oldHeight !== newHeight) {
316      this.$outerContainer.animate({
317        width: newWidth,
318        height: newHeight
319      }, this.options.resizeDuration, 'swing', function() {
320        postResize();
321      });
322    } else {
323      postResize();
324    }
325  };
326
327  // Display the image and its details and begin preload neighboring images.
328  Lightbox.prototype.showImage = function() {
329    this.$lightbox.find('.lb-loader').stop(true).hide();
330    this.$lightbox.find('.lb-image').fadeIn('slow');
331
332    this.updateNav();
333    this.updateDetails();
334    this.preloadNeighboringImages();
335    this.enableKeyboardNav();
336  };
337
338  // Display previous and next navigation if appropriate.
339  Lightbox.prototype.updateNav = function() {
340    // Check to see if the browser supports touch events. If so, we take the conservative approach
341    // and assume that mouse hover events are not supported and always show prev/next navigation
342    // arrows in image sets.
343    var alwaysShowNav = false;
344    try {
345      document.createEvent('TouchEvent');
346      alwaysShowNav = (this.options.alwaysShowNavOnTouchDevices) ? true : false;
347    } catch (e) {}
348
349    this.$lightbox.find('.lb-nav').show();
350
351    if (this.album.length > 1) {
352      if (this.options.wrapAround) {
353        if (alwaysShowNav) {
354          this.$lightbox.find('.lb-prev, .lb-next').css('opacity', '1');
355        }
356        this.$lightbox.find('.lb-prev, .lb-next').show();
357      } else {
358        if (this.currentImageIndex > 0) {
359          this.$lightbox.find('.lb-prev').show();
360          if (alwaysShowNav) {
361            this.$lightbox.find('.lb-prev').css('opacity', '1');
362          }
363        }
364        if (this.currentImageIndex < this.album.length - 1) {
365          this.$lightbox.find('.lb-next').show();
366          if (alwaysShowNav) {
367            this.$lightbox.find('.lb-next').css('opacity', '1');
368          }
369        }
370      }
371    }
372  };
373
374  // Display caption, image number, and closing button.
375  Lightbox.prototype.updateDetails = function() {
376    var self = this;
377
378    // Enable anchor clicks in the injected caption html.
379    // Thanks Nate Wright for the fix. @https://github.com/NateWr
380    if (typeof this.album[this.currentImageIndex].title !== 'undefined' &&
381      this.album[this.currentImageIndex].title !== '') {
382      this.$lightbox.find('.lb-caption')
383        .html(this.album[this.currentImageIndex].title)
384        .fadeIn('fast')
385        .find('a').on('click', function(event) {
386          if ($(this).attr('target') !== undefined) {
387            window.open($(this).attr('href'), $(this).attr('target'));
388          } else {
389            location.href = $(this).attr('href');
390          }
391        });
392    }
393
394    if (this.album.length > 1 && this.options.showImageNumberLabel) {
395      var labelText = this.imageCountLabel(this.currentImageIndex + 1, this.album.length);
396      this.$lightbox.find('.lb-number').text(labelText).fadeIn('fast');
397    } else {
398      this.$lightbox.find('.lb-number').hide();
399    }
400
401    this.$outerContainer.removeClass('animating');
402
403    this.$lightbox.find('.lb-dataContainer').fadeIn(this.options.resizeDuration, function() {
404      return self.sizeOverlay();
405    });
406  };
407
408  // Preload previous and next images in set.
409  Lightbox.prototype.preloadNeighboringImages = function() {
410    if (this.album.length > this.currentImageIndex + 1) {
411      var preloadNext = new Image();
412      preloadNext.src = this.album[this.currentImageIndex + 1].link;
413    }
414    if (this.currentImageIndex > 0) {
415      var preloadPrev = new Image();
416      preloadPrev.src = this.album[this.currentImageIndex - 1].link;
417    }
418  };
419
420  Lightbox.prototype.enableKeyboardNav = function() {
421    $(document).on('keyup.keyboard', $.proxy(this.keyboardAction, this));
422  };
423
424  Lightbox.prototype.disableKeyboardNav = function() {
425    $(document).off('.keyboard');
426  };
427
428  Lightbox.prototype.keyboardAction = function(event) {
429    var KEYCODE_ESC        = 27;
430    var KEYCODE_LEFTARROW  = 37;
431    var KEYCODE_RIGHTARROW = 39;
432
433    var keycode = event.keyCode;
434    var key     = String.fromCharCode(keycode).toLowerCase();
435    if (keycode === KEYCODE_ESC || key.match(/x|o|c/)) {
436      this.end();
437    } else if (key === 'p' || keycode === KEYCODE_LEFTARROW) {
438      if (this.currentImageIndex !== 0) {
439        this.changeImage(this.currentImageIndex - 1);
440      } else if (this.options.wrapAround && this.album.length > 1) {
441        this.changeImage(this.album.length - 1);
442      }
443    } else if (key === 'n' || keycode === KEYCODE_RIGHTARROW) {
444      if (this.currentImageIndex !== this.album.length - 1) {
445        this.changeImage(this.currentImageIndex + 1);
446      } else if (this.options.wrapAround && this.album.length > 1) {
447        this.changeImage(0);
448      }
449    }
450  };
451
452  // Closing time. :-(
453  Lightbox.prototype.end = function() {
454    this.disableKeyboardNav();
455    $(window).off('resize', this.sizeOverlay);
456    this.$lightbox.fadeOut(this.options.fadeDuration);
457    this.$overlay.fadeOut(this.options.fadeDuration);
458    $('select, object, embed').css({
459      visibility: 'visible'
460    });
461    if (this.options.disableScrolling) {
462      $('body').removeClass('lb-disable-scrolling');
463    }
464  };
465
466  /* SWP check if we should show download button [[[ */
467  function IsDownloadButtonEnabled($link) {
468    var dataShowDownButton = $link.attr('data-download-button');
469    return (dataShowDownButton && dataShowDownButton==='true') ;
470  }
471  /* SWP check if we should show download button ]]] */
472
473  return new Lightbox();
474}));

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