jlukic
10 years ago
4 changed files with 515 additions and 19 deletions
Split View
Diff Options
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471src/behaviors/visibility.js
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13src/collections/grid.less
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41src/modules/popup.js
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9src/modules/transition.js
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/* |
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* # Semantic - Visibility |
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* http://github.com/jlukic/semantic-ui/
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* |
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* |
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* Copyright 2013 Contributors |
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* Released under the MIT license |
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* http://opensource.org/licenses/MIT
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* |
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*/ |
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;(function ( $, window, document, undefined ) { |
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|
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$.fn.visibility = function(parameters) { |
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var |
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$allModules = $(this), |
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moduleSelector = $allModules.selector || '', |
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|
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time = new Date().getTime(), |
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performance = [], |
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query = arguments[0], |
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methodInvoked = (typeof query == 'string'), |
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queryArguments = [].slice.call(arguments, 1), |
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returnedValue |
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; |
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$allModules |
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.each(function() { |
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var |
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settings = $.extend(true, {}, $.fn.visibility.settings, parameters), |
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className = settings.className, |
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namespace = settings.namespace, |
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error = settings.error, |
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eventNamespace = '.' + namespace, |
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moduleNamespace = 'module-' + namespace, |
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$module = $(this), |
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$window = $(window), |
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$container = $module.offsetParent(), |
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$context, |
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selector = $module.selector || '', |
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instance = $module.data(moduleNamespace), |
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requestAnimationFrame = window.requestAnimationFrame |
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|| window.mozRequestAnimationFrame |
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|| window.webkitRequestAnimationFrame |
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|| window.msRequestAnimationFrame |
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|| function(callback) { setTimeout(callback, 0); }, |
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element = this, |
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module |
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; |
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module = { |
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initialize: function() { |
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module.verbose('Initializing visibility', settings); |
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module.reset(); |
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module.save.position(); |
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module.bindEvents(); |
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module.instantiate(); |
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}, |
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instantiate: function() { |
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module.verbose('Storing instance of module', module); |
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instance = module; |
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$module |
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.data(moduleNamespace, module) |
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; |
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}, |
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destroy: function() { |
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module.verbose('Destroying previous module'); |
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$window |
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.off(eventNamespace) |
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; |
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$module |
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.off(eventNamespace) |
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.removeData(moduleNamespace) |
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; |
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}, |
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bindEvents: function() { |
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$window |
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.on('resize', module.event.resize) |
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.on('scroll', module.event.scroll) |
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; |
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}, |
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event: { |
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resize: function() { |
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requestAnimationFrame(module.refresh); |
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}, |
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scroll: function() { |
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requestAnimationFrame(function() { |
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module.checkVisibility(); |
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$.proxy(settings.onScroll, element)(); |
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}); |
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} |
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}, |
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refresh: function() { |
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module.save.position(); |
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module.checkVisibility(); |
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$.proxy(settings.onRefresh, element)(); |
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}, |
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reset: function() { |
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module.cache = { |
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screen : {}, |
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element : {} |
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}; |
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}, |
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checkVisibility: function() { |
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module.save.scroll(); |
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module.save.direction(); |
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module.save.screenCalculations(); |
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module.save.elementCalculations(); |
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module.debug('Updating visibility of element', module.cache.element); |
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}, |
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save: { |
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scroll: function() { |
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module.cache.scroll = $window.scrollTop() + settings.offset; |
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}, |
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direction: function() { |
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var |
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scroll = module.get.scroll(), |
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lastScroll = module.get.lastScroll(), |
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direction |
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; |
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if(scroll > lastScroll && lastScroll) { |
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direction = 'down'; |
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} |
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else if(scroll < lastScroll && lastScroll) { |
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direction = 'up'; |
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} |
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else { |
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direction = 'static'; |
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} |
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module.cache.direction = direction; |
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return module.cache.direction; |
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}, |
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elementPosition: function() { |
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var |
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screen = module.get.screenSize() |
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; |
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module.verbose('Saving element position'); |
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$.extend(module.cache.element, { |
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margin : { |
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top : parseInt($module.css('margin-top'), 10), |
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bottom : parseInt($module.css('margin-bottom'), 10) |
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}, |
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fits : (element.height < screen.height), |
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offset : $module.offset(), |
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width : $module.outerWidth(), |
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height : $module.outerHeight() |
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}); |
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return module.cache.element; |
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}, |
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elementCalculations: function() { |
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var |
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screen = module.get.screenCalculations(), |
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element = module.get.elementPosition() |
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; |
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// offset
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if(settings.includeMargin) { |
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$.extend(module.cache.element, { |
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top : element.offset.top - element.margin.top, |
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bottom : element.offset.top + element.height + element.margin.bottom |
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}); |
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} |
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else { |
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$.extend(module.cache.element, { |
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top : element.offset.top, |
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bottom : element.offset.top + element.height |
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}); |
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} |
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// visibility
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$.extend(module.cache.element, { |
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topVisible : (screen.bottom > element.top), |
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topPassed : (screen.top > element.top), |
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bottomVisible : (screen.bottom > element.bottom), |
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bottomPassed : (screen.top > element.bottom) |
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}); |
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// meta calculations
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$.extend(module.cache.element, { |
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visible : (module.cache.element.topVisible || module.cache.element.bottomVisible), |
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hidden : (!module.cache.element.topVisible && !module.cache.element.bottomVisible) |
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}); |
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}, |
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screenCalculations: function() { |
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var |
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scroll = $window.scrollTop() |
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; |
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if(module.cache.scroll === undefined) { |
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module.cache.scroll = $window.scrollTop(); |
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} |
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module.save.direction(); |
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$.extend(module.cache.screen, { |
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top : scroll + settings.offset, |
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bottom : scroll + settings.offset + module.cache.screen.height |
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}); |
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return module.cache.screen; |
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}, |
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screenSize: function() { |
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module.verbose('Saving window position'); |
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module.cache.screen = { |
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height: $window.height() |
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}; |
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}, |
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position: function() { |
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module.save.screenSize(); |
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module.save.elementPosition(); |
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} |
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}, |
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get: { |
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direction: function() { |
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if(module.cache.direction === undefined) { |
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module.save.direction(); |
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} |
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return module.cache.direction; |
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}, |
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elementPosition: function() { |
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if(module.cache.element === undefined) { |
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module.save.elementPosition(); |
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} |
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return module.cache.element; |
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}, |
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elementCalculations: function() { |
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if(module.cache.element === undefined) { |
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module.save.elementCalculations(); |
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} |
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return module.cache.element; |
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}, |
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screenCalculations: function() { |
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if(module.cache.screen === undefined) { |
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module.save.screenCalculations(); |
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} |
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return module.cache.screen; |
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}, |
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screenSize: function() { |
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if(module.cache.screen === undefined) { |
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module.save.screenSize(); |
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} |
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return module.cache.screen; |
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}, |
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scroll: function() { |
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if(module.cache.scroll === undefined) { |
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module.save.scroll(); |
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} |
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return module.cache.scroll; |
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}, |
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lastScroll: function() { |
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if(module.cache.screen === undefined) { |
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module.debug('First scroll event, no last scroll could be found'); |
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return false; |
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} |
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return module.cache.screen.top; |
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} |
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}, |
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setting: function(name, value) { |
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if( $.isPlainObject(name) ) { |
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$.extend(true, settings, name); |
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} |
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else if(value !== undefined) { |
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settings[name] = value; |
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} |
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else { |
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return settings[name]; |
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} |
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}, |
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internal: function(name, value) { |
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if( $.isPlainObject(name) ) { |
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$.extend(true, module, name); |
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} |
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else if(value !== undefined) { |
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module[name] = value; |
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} |
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else { |
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return module[name]; |
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} |
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}, |
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debug: function() { |
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if(settings.debug) { |
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if(settings.performance) { |
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module.performance.log(arguments); |
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} |
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else { |
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module.debug = Function.prototype.bind.call(console.info, console, settings.name + ':'); |
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module.debug.apply(console, arguments); |
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} |
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} |
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}, |
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verbose: function() { |
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if(settings.verbose && settings.debug) { |
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if(settings.performance) { |
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module.performance.log(arguments); |
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} |
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else { |
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module.verbose = Function.prototype.bind.call(console.info, console, settings.name + ':'); |
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module.verbose.apply(console, arguments); |
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} |
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} |
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}, |
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error: function() { |
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module.error = Function.prototype.bind.call(console.error, console, settings.name + ':'); |
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module.error.apply(console, arguments); |
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}, |
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performance: { |
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log: function(message) { |
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var |
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currentTime, |
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executionTime, |
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previousTime |
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; |
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if(settings.performance) { |
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currentTime = new Date().getTime(); |
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previousTime = time || currentTime; |
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executionTime = currentTime - previousTime; |
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time = currentTime; |
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performance.push({ |
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'Element' : element, |
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'Name' : message[0], |
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'Arguments' : [].slice.call(message, 1) || '', |
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'Execution Time' : executionTime |
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}); |
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} |
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clearTimeout(module.performance.timer); |
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module.performance.timer = setTimeout(module.performance.display, 100); |
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}, |
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display: function() { |
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var |
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title = settings.name + ':', |
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totalTime = 0 |
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; |
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time = false; |
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clearTimeout(module.performance.timer); |
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$.each(performance, function(index, data) { |
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totalTime += data['Execution Time']; |
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}); |
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title += ' ' + totalTime + 'ms'; |
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if(moduleSelector) { |
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title += ' \'' + moduleSelector + '\''; |
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} |
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if( (console.group !== undefined || console.table !== undefined) && performance.length > 0) { |
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console.groupCollapsed(title); |
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if(console.table) { |
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console.table(performance); |
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} |
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else { |
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$.each(performance, function(index, data) { |
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console.log(data['Name'] + ': ' + data['Execution Time']+'ms'); |
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}); |
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} |
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console.groupEnd(); |
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} |
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performance = []; |
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} |
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}, |
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invoke: function(query, passedArguments, context) { |
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var |
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object = instance, |
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maxDepth, |
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found, |
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response |
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; |
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passedArguments = passedArguments || queryArguments; |
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context = element || context; |
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if(typeof query == 'string' && object !== undefined) { |
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query = query.split(/[\. ]/); |
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maxDepth = query.length - 1; |
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$.each(query, function(depth, value) { |
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var camelCaseValue = (depth != maxDepth) |
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? value + query[depth + 1].charAt(0).toUpperCase() + query[depth + 1].slice(1) |
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: query |
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; |
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if( $.isPlainObject( object[camelCaseValue] ) && (depth != maxDepth) ) { |
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object = object[camelCaseValue]; |
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} |
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else if( object[camelCaseValue] !== undefined ) { |
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found = object[camelCaseValue]; |
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return false; |
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} |
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else if( $.isPlainObject( object[value] ) && (depth != maxDepth) ) { |
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object = object[value]; |
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} |
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else if( object[value] !== undefined ) { |
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found = object[value]; |
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return false; |
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} |
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else { |
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return false; |
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} |
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}); |
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} |
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if ( $.isFunction( found ) ) { |
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response = found.apply(context, passedArguments); |
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} |
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else if(found !== undefined) { |
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response = found; |
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} |
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if($.isArray(returnedValue)) { |
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returnedValue.push(response); |
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} |
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else if(returnedValue !== undefined) { |
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returnedValue = [returnedValue, response]; |
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} |
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else if(response !== undefined) { |
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returnedValue = response; |
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} |
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return found; |
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} |
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}; |
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if(methodInvoked) { |
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if(instance === undefined) { |
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module.initialize(); |
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} |
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module.invoke(query); |
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} |
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else { |
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if(instance !== undefined) { |
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module.destroy(); |
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} |
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module.initialize(); |
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} |
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}) |
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; |
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return (returnedValue !== undefined) |
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? returnedValue |
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: this |
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; |
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}; |
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$.fn.visibility.settings = { |
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name : 'Visibility', |
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namespace : 'visibility', |
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verbose : false, |
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debug : false, |
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performance : true, |
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offset : 0, |
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includeMargin : false, |
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onTopVisible : function(){}, |
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onBottomVisible : function(){}, |
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onTopPassed : function(){}, |
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onBottomPassed : function(){}, |
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onRefresh : function(){}, |
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onScroll : function(){}, |
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error : { |
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method : 'The method you called is not defined.' |
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} |
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}; |
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})( jQuery, window , document ); |
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