diff js/foundation/foundation.clearing.js @ 0:7abe02bf29ec

initial commit
author Alex Krolick <whokilledtheelectricmonk@gmail.com>
date Sat, 07 Nov 2015 18:04:42 -0800
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/foundation/foundation.clearing.js	Sat Nov 07 18:04:42 2015 -0800
@@ -0,0 +1,586 @@
+;(function ($, window, document, undefined) {
+  'use strict';
+
+  Foundation.libs.clearing = {
+    name : 'clearing',
+
+    version : '5.5.3',
+
+    settings : {
+      templates : {
+        viewing : '<a href="#" class="clearing-close">&times;</a>' +
+          '<div class="visible-img" style="display: none"><div class="clearing-touch-label"></div><img src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" alt="" />' +
+          '<p class="clearing-caption"></p><a href="#" class="clearing-main-prev"><span></span></a>' +
+          '<a href="#" class="clearing-main-next"><span></span></a></div>' +
+          '<img class="clearing-preload-next" style="display: none" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" alt="" />' +
+          '<img class="clearing-preload-prev" style="display: none" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" alt="" />'
+      },
+
+      // comma delimited list of selectors that, on click, will close clearing,
+      // add 'div.clearing-blackout, div.visible-img' to close on background click
+      close_selectors : '.clearing-close, div.clearing-blackout',
+
+      // Default to the entire li element.
+      open_selectors : '',
+
+      // Image will be skipped in carousel.
+      skip_selector : '',
+
+      touch_label : '',
+
+      // event initializer and locks
+      init : false,
+      locked : false
+    },
+
+    init : function (scope, method, options) {
+      var self = this;
+      Foundation.inherit(this, 'throttle image_loaded');
+
+      this.bindings(method, options);
+
+      if (self.S(this.scope).is('[' + this.attr_name() + ']')) {
+        this.assemble(self.S('li', this.scope));
+      } else {
+        self.S('[' + this.attr_name() + ']', this.scope).each(function () {
+          self.assemble(self.S('li', this));
+        });
+      }
+    },
+
+    events : function (scope) {
+      var self = this,
+          S = self.S,
+          $scroll_container = $('.scroll-container');
+
+      if ($scroll_container.length > 0) {
+        this.scope = $scroll_container;
+      }
+
+      S(this.scope)
+        .off('.clearing')
+        .on('click.fndtn.clearing', 'ul[' + this.attr_name() + '] li ' + this.settings.open_selectors,
+          function (e, current, target) {
+            var current = current || S(this),
+                target = target || current,
+                next = current.next('li'),
+                settings = current.closest('[' + self.attr_name() + ']').data(self.attr_name(true) + '-init'),
+                image = S(e.target);
+
+            e.preventDefault();
+
+            if (!settings) {
+              self.init();
+              settings = current.closest('[' + self.attr_name() + ']').data(self.attr_name(true) + '-init');
+            }
+
+            // if clearing is open and the current image is
+            // clicked, go to the next image in sequence
+            if (target.hasClass('visible') &&
+              current[0] === target[0] &&
+              next.length > 0 && self.is_open(current)) {
+              target = next;
+              image = S('img', target);
+            }
+
+            // set current and target to the clicked li if not otherwise defined.
+            self.open(image, current, target);
+            self.update_paddles(target);
+          })
+
+        .on('click.fndtn.clearing', '.clearing-main-next',
+          function (e) { self.nav(e, 'next') })
+        .on('click.fndtn.clearing', '.clearing-main-prev',
+          function (e) { self.nav(e, 'prev') })
+        .on('click.fndtn.clearing', this.settings.close_selectors,
+          function (e) { Foundation.libs.clearing.close(e, this) });
+
+      $(document).on('keydown.fndtn.clearing',
+          function (e) { self.keydown(e) });
+
+      S(window).off('.clearing').on('resize.fndtn.clearing',
+        function () { self.resize() });
+
+      this.swipe_events(scope);
+    },
+
+    swipe_events : function (scope) {
+      var self = this,
+      S = self.S;
+
+      S(this.scope)
+        .on('touchstart.fndtn.clearing', '.visible-img', function (e) {
+          if (!e.touches) { e = e.originalEvent; }
+          var data = {
+                start_page_x : e.touches[0].pageX,
+                start_page_y : e.touches[0].pageY,
+                start_time : (new Date()).getTime(),
+                delta_x : 0,
+                is_scrolling : undefined
+              };
+
+          S(this).data('swipe-transition', data);
+          e.stopPropagation();
+        })
+        .on('touchmove.fndtn.clearing', '.visible-img', function (e) {
+          if (!e.touches) {
+            e = e.originalEvent;
+          }
+          // Ignore pinch/zoom events
+          if (e.touches.length > 1 || e.scale && e.scale !== 1) {
+            return;
+          }
+
+          var data = S(this).data('swipe-transition');
+
+          if (typeof data === 'undefined') {
+            data = {};
+          }
+
+          data.delta_x = e.touches[0].pageX - data.start_page_x;
+
+          if (Foundation.rtl) {
+            data.delta_x = -data.delta_x;
+          }
+
+          if (typeof data.is_scrolling === 'undefined') {
+            data.is_scrolling = !!( data.is_scrolling || Math.abs(data.delta_x) < Math.abs(e.touches[0].pageY - data.start_page_y) );
+          }
+
+          if (!data.is_scrolling && !data.active) {
+            e.preventDefault();
+            var direction = (data.delta_x < 0) ? 'next' : 'prev';
+            data.active = true;
+            self.nav(e, direction);
+          }
+        })
+        .on('touchend.fndtn.clearing', '.visible-img', function (e) {
+          S(this).data('swipe-transition', {});
+          e.stopPropagation();
+        });
+    },
+
+    assemble : function ($li) {
+      var $el = $li.parent();
+
+      if ($el.parent().hasClass('carousel')) {
+        return;
+      }
+
+      $el.after('<div id="foundationClearingHolder"></div>');
+
+      var grid = $el.detach(),
+          grid_outerHTML = '';
+
+      if (grid[0] == null) {
+        return;
+      } else {
+        grid_outerHTML = grid[0].outerHTML;
+      }
+
+      var holder = this.S('#foundationClearingHolder'),
+          settings = $el.data(this.attr_name(true) + '-init'),
+          data = {
+            grid : '<div class="carousel">' + grid_outerHTML + '</div>',
+            viewing : settings.templates.viewing
+          },
+          wrapper = '<div class="clearing-assembled"><div>' + data.viewing +
+            data.grid + '</div></div>',
+          touch_label = this.settings.touch_label;
+
+      if (Modernizr.touch) {
+        wrapper = $(wrapper).find('.clearing-touch-label').html(touch_label).end();
+      }
+
+      holder.after(wrapper).remove();
+    },
+
+    open : function ($image, current, target) {
+      var self = this,
+          body = $(document.body),
+          root = target.closest('.clearing-assembled'),
+          container = self.S('div', root).first(),
+          visible_image = self.S('.visible-img', container),
+          image = self.S('img', visible_image).not($image),
+          label = self.S('.clearing-touch-label', container),
+          error = false,
+          loaded = {};
+
+      // Event to disable scrolling on touch devices when Clearing is activated
+      $('body').on('touchmove', function (e) {
+        e.preventDefault();
+      });
+
+      image.error(function () {
+        error = true;
+      });
+
+      function startLoad() {
+        setTimeout(function () {
+          this.image_loaded(image, function () {
+            if (image.outerWidth() === 1 && !error) {
+              startLoad.call(this);
+            } else {
+              cb.call(this, image);
+            }
+          }.bind(this));
+        }.bind(this), 100);
+      }
+
+      function cb (image) {
+        var $image = $(image);
+        $image.css('visibility', 'visible');
+        $image.trigger('imageVisible');
+        // toggle the gallery
+        body.css('overflow', 'hidden');
+        root.addClass('clearing-blackout');
+        container.addClass('clearing-container');
+        visible_image.show();
+        this.fix_height(target)
+          .caption(self.S('.clearing-caption', visible_image), self.S('img', target))
+          .center_and_label(image, label)
+          .shift(current, target, function () {
+            target.closest('li').siblings().removeClass('visible');
+            target.closest('li').addClass('visible');
+          });
+        visible_image.trigger('opened.fndtn.clearing')
+      }
+
+      if (!this.locked()) {
+        visible_image.trigger('open.fndtn.clearing');
+        // set the image to the selected thumbnail
+        loaded = this.load($image);
+        if (loaded.interchange) {
+          image
+            .attr('data-interchange', loaded.interchange)
+            .foundation('interchange', 'reflow');
+        } else {
+          image
+            .attr('src', loaded.src)
+            .attr('data-interchange', '');
+        }
+        image.css('visibility', 'hidden');
+
+        startLoad.call(this);
+      }
+    },
+
+    close : function (e, el) {
+      e.preventDefault();
+
+      var root = (function (target) {
+            if (/blackout/.test(target.selector)) {
+              return target;
+            } else {
+              return target.closest('.clearing-blackout');
+            }
+          }($(el))),
+          body = $(document.body), container, visible_image;
+
+      if (el === e.target && root) {
+        body.css('overflow', '');
+        container = $('div', root).first();
+        visible_image = $('.visible-img', container);
+        visible_image.trigger('close.fndtn.clearing');
+        this.settings.prev_index = 0;
+        $('ul[' + this.attr_name() + ']', root)
+          .attr('style', '').closest('.clearing-blackout')
+          .removeClass('clearing-blackout');
+        container.removeClass('clearing-container');
+        visible_image.hide();
+        visible_image.trigger('closed.fndtn.clearing');
+      }
+
+      // Event to re-enable scrolling on touch devices
+      $('body').off('touchmove');
+
+      return false;
+    },
+
+    is_open : function (current) {
+      return current.parent().prop('style').length > 0;
+    },
+
+    keydown : function (e) {
+      var clearing = $('.clearing-blackout ul[' + this.attr_name() + ']'),
+          NEXT_KEY = this.rtl ? 37 : 39,
+          PREV_KEY = this.rtl ? 39 : 37,
+          ESC_KEY = 27;
+
+      if (e.which === NEXT_KEY) {
+        this.go(clearing, 'next');
+      }
+      if (e.which === PREV_KEY) {
+        this.go(clearing, 'prev');
+      }
+      if (e.which === ESC_KEY) {
+        this.S('a.clearing-close').trigger('click.fndtn.clearing');
+      }
+    },
+
+    nav : function (e, direction) {
+      var clearing = $('ul[' + this.attr_name() + ']', '.clearing-blackout');
+
+      e.preventDefault();
+      this.go(clearing, direction);
+    },
+
+    resize : function () {
+      var image = $('img', '.clearing-blackout .visible-img'),
+          label = $('.clearing-touch-label', '.clearing-blackout');
+
+      if (image.length) {
+        this.center_and_label(image, label);
+        image.trigger('resized.fndtn.clearing')
+      }
+    },
+
+    // visual adjustments
+    fix_height : function (target) {
+      var lis = target.parent().children(),
+          self = this;
+
+      lis.each(function () {
+        var li = self.S(this),
+            image = li.find('img');
+
+        if (li.height() > image.outerHeight()) {
+          li.addClass('fix-height');
+        }
+      })
+      .closest('ul')
+      .width(lis.length * 100 + '%');
+
+      return this;
+    },
+
+    update_paddles : function (target) {
+      target = target.closest('li');
+      var visible_image = target
+        .closest('.carousel')
+        .siblings('.visible-img');
+
+      if (target.next().length > 0) {
+        this.S('.clearing-main-next', visible_image).removeClass('disabled');
+      } else {
+        this.S('.clearing-main-next', visible_image).addClass('disabled');
+      }
+
+      if (target.prev().length > 0) {
+        this.S('.clearing-main-prev', visible_image).removeClass('disabled');
+      } else {
+        this.S('.clearing-main-prev', visible_image).addClass('disabled');
+      }
+    },
+
+    center_and_label : function (target, label) {
+      if (!this.rtl && label.length > 0) {
+        label.css({
+          marginLeft : -(label.outerWidth() / 2),
+          marginTop : -(target.outerHeight() / 2)-label.outerHeight()-10
+        });
+      } else {
+        label.css({
+          marginRight : -(label.outerWidth() / 2),
+          marginTop : -(target.outerHeight() / 2)-label.outerHeight()-10,
+          left: 'auto',
+          right: '50%'
+        });
+      }
+      return this;
+    },
+
+    // image loading and preloading
+
+    load : function ($image) {
+      var href,
+          interchange,
+          closest_a;
+
+      if ($image[0].nodeName === 'A') {
+        href = $image.attr('href');
+        interchange = $image.data('clearing-interchange');
+      } else {
+        closest_a = $image.closest('a');
+        href = closest_a.attr('href');
+        interchange = closest_a.data('clearing-interchange');
+      }
+
+      this.preload($image);
+
+      return {
+        'src': href ? href : $image.attr('src'),
+        'interchange': href ? interchange : $image.data('clearing-interchange')
+      }
+    },
+
+    preload : function ($image) {
+      this
+        .img($image.closest('li').next(), 'next')
+        .img($image.closest('li').prev(), 'prev');
+    },
+
+    img : function (img, sibling_type) {
+      if (img.length) {
+        var preload_img = $('.clearing-preload-' + sibling_type),
+            new_a = this.S('a', img),
+            src,
+            interchange,
+            image;
+
+        if (new_a.length) {
+          src = new_a.attr('href');
+          interchange = new_a.data('clearing-interchange');
+        } else {
+          image = this.S('img', img);
+          src = image.attr('src');
+          interchange = image.data('clearing-interchange');
+        }
+
+        if (interchange) {
+          preload_img.attr('data-interchange', interchange);
+        } else {
+          preload_img.attr('src', src);
+          preload_img.attr('data-interchange', '');
+        }
+      }
+      return this;
+    },
+
+    // image caption
+
+    caption : function (container, $image) {
+      var caption = $image.attr('data-caption');
+
+      if (caption) {
+      	var containerPlain = container.get(0);
+      	containerPlain.innerHTML = caption;
+        container.show();
+      } else {
+        container
+          .text('')
+          .hide();
+      }
+      return this;
+    },
+
+    // directional methods
+
+    go : function ($ul, direction) {
+      var current = this.S('.visible', $ul),
+          target = current[direction]();
+
+      // Check for skip selector.
+      if (this.settings.skip_selector && target.find(this.settings.skip_selector).length != 0) {
+        target = target[direction]();
+      }
+
+      if (target.length) {
+        this.S('img', target)
+          .trigger('click.fndtn.clearing', [current, target])
+          .trigger('change.fndtn.clearing');
+      }
+    },
+
+    shift : function (current, target, callback) {
+      var clearing = target.parent(),
+          old_index = this.settings.prev_index || target.index(),
+          direction = this.direction(clearing, current, target),
+          dir = this.rtl ? 'right' : 'left',
+          left = parseInt(clearing.css('left'), 10),
+          width = target.outerWidth(),
+          skip_shift;
+
+      var dir_obj = {};
+
+      // we use jQuery animate instead of CSS transitions because we
+      // need a callback to unlock the next animation
+      // needs support for RTL **
+      if (target.index() !== old_index && !/skip/.test(direction)) {
+        if (/left/.test(direction)) {
+          this.lock();
+          dir_obj[dir] = left + width;
+          clearing.animate(dir_obj, 300, this.unlock());
+        } else if (/right/.test(direction)) {
+          this.lock();
+          dir_obj[dir] = left - width;
+          clearing.animate(dir_obj, 300, this.unlock());
+        }
+      } else if (/skip/.test(direction)) {
+        // the target image is not adjacent to the current image, so
+        // do we scroll right or not
+        skip_shift = target.index() - this.settings.up_count;
+        this.lock();
+
+        if (skip_shift > 0) {
+          dir_obj[dir] = -(skip_shift * width);
+          clearing.animate(dir_obj, 300, this.unlock());
+        } else {
+          dir_obj[dir] = 0;
+          clearing.animate(dir_obj, 300, this.unlock());
+        }
+      }
+
+      callback();
+    },
+
+    direction : function ($el, current, target) {
+      var lis = this.S('li', $el),
+          li_width = lis.outerWidth() + (lis.outerWidth() / 4),
+          up_count = Math.floor(this.S('.clearing-container').outerWidth() / li_width) - 1,
+          target_index = lis.index(target),
+          response;
+
+      this.settings.up_count = up_count;
+
+      if (this.adjacent(this.settings.prev_index, target_index)) {
+        if ((target_index > up_count) && target_index > this.settings.prev_index) {
+          response = 'right';
+        } else if ((target_index > up_count - 1) && target_index <= this.settings.prev_index) {
+          response = 'left';
+        } else {
+          response = false;
+        }
+      } else {
+        response = 'skip';
+      }
+
+      this.settings.prev_index = target_index;
+
+      return response;
+    },
+
+    adjacent : function (current_index, target_index) {
+      for (var i = target_index + 1; i >= target_index - 1; i--) {
+        if (i === current_index) {
+          return true;
+        }
+      }
+      return false;
+    },
+
+    // lock management
+
+    lock : function () {
+      this.settings.locked = true;
+    },
+
+    unlock : function () {
+      this.settings.locked = false;
+    },
+
+    locked : function () {
+      return this.settings.locked;
+    },
+
+    off : function () {
+      this.S(this.scope).off('.fndtn.clearing');
+      this.S(window).off('.fndtn.clearing');
+    },
+
+    reflow : function () {
+      this.init();
+    }
+  };
+
+}(jQuery, window, window.document));