diff options
author | Lars Henrik Mai <lars.mai@kontinui.de> | 2014-09-21 12:25:47 +0200 |
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committer | Lars Henrik Mai <lars.mai@kontinui.de> | 2014-09-21 12:25:47 +0200 |
commit | 7cc7910df63d19e7ebc67bb1156437f0559712d7 (patch) | |
tree | 66f972354559fe05b7a97efccd08fc363c91cf4d /source/bower_components/foundation/js/foundation/foundation.magellan.js | |
parent | 450a01136a510adc4c96ff12e05e00a2ce550c8f (diff) |
add foundation via bower
Diffstat (limited to 'source/bower_components/foundation/js/foundation/foundation.magellan.js')
-rw-r--r-- | source/bower_components/foundation/js/foundation/foundation.magellan.js | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/source/bower_components/foundation/js/foundation/foundation.magellan.js b/source/bower_components/foundation/js/foundation/foundation.magellan.js new file mode 100644 index 0000000..fa22617 --- /dev/null +++ b/source/bower_components/foundation/js/foundation/foundation.magellan.js @@ -0,0 +1,189 @@ +;(function ($, window, document, undefined) { + 'use strict'; + + Foundation.libs['magellan-expedition'] = { + name : 'magellan-expedition', + + version : '5.4.3', + + settings : { + active_class: 'active', + threshold: 0, // pixels from the top of the expedition for it to become fixes + destination_threshold: 20, // pixels from the top of destination for it to be considered active + throttle_delay: 30, // calculation throttling to increase framerate + fixed_top: 0 // top distance in pixels assigend to the fixed element on scroll + }, + + init : function (scope, method, options) { + Foundation.inherit(this, 'throttle'); + this.bindings(method, options); + }, + + events : function () { + var self = this, + S = self.S, + settings = self.settings; + + // initialize expedition offset + self.set_expedition_position(); + + S(self.scope) + .off('.magellan') + .on('click.fndtn.magellan', '[' + self.add_namespace('data-magellan-arrival') + '] a[href^="#"]', function (e) { + e.preventDefault(); + var expedition = $(this).closest('[' + self.attr_name() + ']'), + settings = expedition.data('magellan-expedition-init'), + hash = this.hash.split('#').join(''), + target = $("a[name='"+hash+"']"); + + if (target.length === 0) { + target = $('#'+hash); + + } + + + // Account for expedition height if fixed position + var scroll_top = target.offset().top - settings.destination_threshold + 1; + scroll_top = scroll_top - expedition.outerHeight(); + + $('html, body').stop().animate({ + 'scrollTop': scroll_top + }, 700, 'swing', function () { + if(history.pushState) { + history.pushState(null, null, '#'+hash); + } + else { + location.hash = '#'+hash; + } + }); + }) + .on('scroll.fndtn.magellan', self.throttle(this.check_for_arrivals.bind(this), settings.throttle_delay)); + + $(window) + .on('resize.fndtn.magellan', self.throttle(this.set_expedition_position.bind(this), settings.throttle_delay)); + }, + + check_for_arrivals : function() { + var self = this; + self.update_arrivals(); + self.update_expedition_positions(); + }, + + set_expedition_position : function() { + var self = this; + $('[' + this.attr_name() + '=fixed]', self.scope).each(function(idx, el) { + var expedition = $(this), + settings = expedition.data('magellan-expedition-init'), + styles = expedition.attr('styles'), // save styles + top_offset, fixed_top; + + expedition.attr('style', ''); + top_offset = expedition.offset().top + settings.threshold; + + //set fixed-top by attribute + fixed_top = parseInt(expedition.data('magellan-fixed-top')); + if(!isNaN(fixed_top)) + self.settings.fixed_top = fixed_top; + + expedition.data(self.data_attr('magellan-top-offset'), top_offset); + expedition.attr('style', styles); + }); + }, + + update_expedition_positions : function() { + var self = this, + window_top_offset = $(window).scrollTop(); + + $('[' + this.attr_name() + '=fixed]', self.scope).each(function() { + var expedition = $(this), + settings = expedition.data('magellan-expedition-init'), + styles = expedition.attr('style'), // save styles + top_offset = expedition.data('magellan-top-offset'); + + //scroll to the top distance + if (window_top_offset+self.settings.fixed_top >= top_offset) { + // Placeholder allows height calculations to be consistent even when + // appearing to switch between fixed/non-fixed placement + var placeholder = expedition.prev('[' + self.add_namespace('data-magellan-expedition-clone') + ']'); + if (placeholder.length === 0) { + placeholder = expedition.clone(); + placeholder.removeAttr(self.attr_name()); + placeholder.attr(self.add_namespace('data-magellan-expedition-clone'),''); + expedition.before(placeholder); + } + expedition.css({position:'fixed', top: settings.fixed_top}).addClass('fixed'); + } else { + expedition.prev('[' + self.add_namespace('data-magellan-expedition-clone') + ']').remove(); + expedition.attr('style',styles).css('position','').css('top','').removeClass('fixed'); + } + }); + }, + + update_arrivals : function() { + var self = this, + window_top_offset = $(window).scrollTop(); + + $('[' + this.attr_name() + ']', self.scope).each(function() { + var expedition = $(this), + settings = expedition.data(self.attr_name(true) + '-init'), + offsets = self.offsets(expedition, window_top_offset), + arrivals = expedition.find('[' + self.add_namespace('data-magellan-arrival') + ']'), + active_item = false; + offsets.each(function(idx, item) { + if (item.viewport_offset >= item.top_offset) { + var arrivals = expedition.find('[' + self.add_namespace('data-magellan-arrival') + ']'); + arrivals.not(item.arrival).removeClass(settings.active_class); + item.arrival.addClass(settings.active_class); + active_item = true; + return true; + } + }); + + if (!active_item) arrivals.removeClass(settings.active_class); + }); + }, + + offsets : function(expedition, window_offset) { + var self = this, + settings = expedition.data(self.attr_name(true) + '-init'), + viewport_offset = window_offset; + + return expedition.find('[' + self.add_namespace('data-magellan-arrival') + ']').map(function(idx, el) { + var name = $(this).data(self.data_attr('magellan-arrival')), + dest = $('[' + self.add_namespace('data-magellan-destination') + '=' + name + ']'); + if (dest.length > 0) { + var top_offset = Math.floor(dest.offset().top - settings.destination_threshold - expedition.outerHeight()); + return { + destination : dest, + arrival : $(this), + top_offset : top_offset, + viewport_offset : viewport_offset + } + } + }).sort(function(a, b) { + if (a.top_offset < b.top_offset) return -1; + if (a.top_offset > b.top_offset) return 1; + return 0; + }); + }, + + data_attr: function (str) { + if (this.namespace.length > 0) { + return this.namespace + '-' + str; + } + + return str; + }, + + off : function () { + this.S(this.scope).off('.magellan'); + this.S(window).off('.magellan'); + }, + + reflow : function () { + var self = this; + // remove placeholder expeditions used for height calculation purposes + $('[' + self.add_namespace('data-magellan-expedition-clone') + ']', self.scope).remove(); + } + }; +}(jQuery, window, window.document)); |