/*jshint undef: true */ /*global jQuery: true */ /* -------------------------------- Infinite Scroll -------------------------------- + https://github.com/paulirish/infinite-scroll + version 2.0b2.120519 + Copyright 2011/12 Paul Irish & Luke Shumard + Licensed under the MIT license + Documentation: http://infinite-scroll.com/ */ (function (window, $, undefined) { "use strict"; $.infinitescroll = function infscr(options, callback, element) { this.element = $(element); // Flag the object in the event of a failed creation if (!this._create(options, callback)) { this.failed = true; } }; $.infinitescroll.defaults = { loading: { finished: undefined, finishedMsg: "貌似所有内容已经加载完毕了~~", img: 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", msg: null, msgText: "正在努力加载,请稍后......", selector: null, speed: 'low', start: undefined }, state: { isDuringAjax: false, isInvalidPage: false, isDestroyed: false, isDone: false, // For when it goes all the way through the archive. isPaused: false, isBeyondMaxPage: false, currPage: 1 }, debug: false, behavior: undefined, binder: $(window), // used to cache the selector nextSelector: "div.navigation a:first", navSelector: "div.navigation", contentSelector: null, // rename to pageFragment extraScrollPx: 150, itemSelector: "div.post", animate: false, pathParse: undefined, dataType: 'html', appendCallback: true, bufferPx: 40, errorCallback: function () { }, infid: 0, //Instance ID pixelsFromNavToBottom: undefined, path: undefined, // Either parts of a URL as an array (e.g. ["/page/", "/"] or a function that takes in the page number and returns a URL prefill: false, // When the document is smaller than the window, load data until the document is larger or links are exhausted maxPage: undefined // to manually control maximum page (when maxPage is undefined, maximum page limitation is not work) }; $.infinitescroll.prototype = { /* ---------------------------- Private methods ---------------------------- */ // Bind or unbind from scroll _binding: function infscr_binding(binding) { var instance = this, opts = instance.options; opts.v = '2.0b2.120520'; // if behavior is defined and this function is extended, call that instead of default if (!!opts.behavior && this['_binding_'+opts.behavior] !== undefined) { this['_binding_'+opts.behavior].call(this); return; } if (binding !== 'bind' && binding !== 'unbind') { this._debug('Binding value ' + binding + ' not valid'); return false; } if (binding === 'unbind') { (this.options.binder).unbind('smartscroll.infscr.' + instance.options.infid); } else { (this.options.binder)[binding]('smartscroll.infscr.' + instance.options.infid, function () { instance.scroll(); }); } this._debug('Binding', binding); }, // Fundamental aspects of the plugin are initialized _create: function infscr_create(options, callback) { // Add custom options to defaults var opts = $.extend(true, {}, $.infinitescroll.defaults, options); this.options = opts; var $window = $(window); var instance = this; // Validate selectors if (!instance._validate(options)) { return false; } // Validate page fragment path var path = $(opts.nextSelector).attr('href'); if (!path) { this._debug('Navigation selector not found'); return false; } // Set the path to be a relative URL from root. opts.path = opts.path || this._determinepath(path); // contentSelector is 'page fragment' option for .load() / .ajax() calls opts.contentSelector = opts.contentSelector || this.element; // loading.selector - if we want to place the load message in a specific selector, defaulted to the contentSelector opts.loading.selector = opts.loading.selector || opts.contentSelector; // Define loading.msg opts.loading.msg = opts.loading.msg || $('
Loading...
' + opts.loading.msgText + '
'); // Preload loading.img (new Image()).src = opts.loading.img; // distance from nav links to bottom // computed as: height of the document + top offset of container - top offset of nav link if(opts.pixelsFromNavToBottom === undefined) { opts.pixelsFromNavToBottom = $(document).height() - $(opts.navSelector).offset().top; this._debug("pixelsFromNavToBottom: " + opts.pixelsFromNavToBottom); } var self = this; // determine loading.start actions opts.loading.start = opts.loading.start || function() { $(opts.navSelector).hide(); opts.loading.msg .appendTo(opts.loading.selector) .show(opts.loading.speed, $.proxy(function() { this.beginAjax(opts); }, self)); }; // determine loading.finished actions opts.loading.finished = opts.loading.finished || function() { if (!opts.state.isBeyondMaxPage) opts.loading.msg.fadeOut(opts.loading.speed); }; // callback loading opts.callback = function(instance, data, url) { if (!!opts.behavior && instance['_callback_'+opts.behavior] !== undefined) { instance['_callback_'+opts.behavior].call($(opts.contentSelector)[0], data, url); } if (callback) { callback.call($(opts.contentSelector)[0], data, opts, url); } if (opts.prefill) { $window.bind("resize.infinite-scroll", instance._prefill); } }; if (options.debug) { // Tell IE9 to use its built-in console if (Function.prototype.bind && (typeof console === 'object' || typeof console === 'function') && typeof console.log === "object") { ["log","info","warn","error","assert","dir","clear","profile","profileEnd"] .forEach(function (method) { console[method] = this.call(console[method], console); }, Function.prototype.bind); } } this._setup(); // Setups the prefill method for use if (opts.prefill) { this._prefill(); } // Return true to indicate successful creation return true; }, _prefill: function infscr_prefill() { var instance = this; var $window = $(window); function needsPrefill() { return (instance.options.contentSelector.height() <= $window.height()); } this._prefill = function() { if (needsPrefill()) { instance.scroll(); } $window.bind("resize.infinite-scroll", function() { if (needsPrefill()) { $window.unbind("resize.infinite-scroll"); instance.scroll(); } }); }; // Call self after setting up the new function this._prefill(); }, // Console log wrapper _debug: function infscr_debug() { if (true !== this.options.debug) { return; } if (typeof console !== 'undefined' && typeof console.log === 'function') { // Modern browsers // Single argument, which is a string if ((Array.prototype.slice.call(arguments)).length === 1 && typeof Array.prototype.slice.call(arguments)[0] === 'string') { console.log( (Array.prototype.slice.call(arguments)).toString() ); } else { console.log( Array.prototype.slice.call(arguments) ); } } else if (!Function.prototype.bind && typeof console !== 'undefined' && typeof console.log === 'object') { // IE8 Function.prototype.call.call(console.log, console, Array.prototype.slice.call(arguments)); } }, // find the number to increment in the path. _determinepath: function infscr_determinepath(path) { var opts = this.options; // if behavior is defined and this function is extended, call that instead of default if (!!opts.behavior && this['_determinepath_'+opts.behavior] !== undefined) { return this['_determinepath_'+opts.behavior].call(this,path); } if (!!opts.pathParse) { this._debug('pathParse manual'); return opts.pathParse(path, this.options.state.currPage+1); } else if (path.match(/^(.*?)\b2\b(.*?$)/)) { path = path.match(/^(.*?)\b2\b(.*?$)/).slice(1); // if there is any 2 in the url at all. } else if (path.match(/^(.*?)2(.*?$)/)) { // page= is used in django: // http://www.infinite-scroll.com/changelog/comment-page-1/#comment-127 if (path.match(/^(.*?page=)2(\/.*|$)/)) { path = path.match(/^(.*?page=)2(\/.*|$)/).slice(1); return path; } path = path.match(/^(.*?)2(.*?$)/).slice(1); } else { // page= is used in drupal too but second page is page=1 not page=2: // thx Jerod Fritz, vladikoff if (path.match(/^(.*?page=)1(\/.*|$)/)) { path = path.match(/^(.*?page=)1(\/.*|$)/).slice(1); return path; } else { this._debug('Sorry, we couldn\'t parse your Next (Previous Posts) URL. Verify your the css selector points to the correct A tag. If you still get this error: yell, scream, and kindly ask for help at infinite-scroll.com.'); // Get rid of isInvalidPage to allow permalink to state opts.state.isInvalidPage = true; //prevent it from running on this page. } } this._debug('determinePath', path); return path; }, // Custom error _error: function infscr_error(xhr) { var opts = this.options; // if behavior is defined and this function is extended, call that instead of default if (!!opts.behavior && this['_error_'+opts.behavior] !== undefined) { this['_error_'+opts.behavior].call(this,xhr); return; } if (xhr !== 'destroy' && xhr !== 'end') { xhr = 'unknown'; } this._debug('Error', xhr); if (xhr === 'end' || opts.state.isBeyondMaxPage) { this._showdonemsg(); } opts.state.isDone = true; opts.state.currPage = 1; // if you need to go back to this instance opts.state.isPaused = false; opts.state.isBeyondMaxPage = false; this._binding('unbind'); }, // Load Callback _loadcallback: function infscr_loadcallback(box, data, url) { var opts = this.options, callback = this.options.callback, // GLOBAL OBJECT FOR CALLBACK result = (opts.state.isDone) ? 'done' : (!opts.appendCallback) ? 'no-append' : 'append', frag; // if behavior is defined and this function is extended, call that instead of default if (!!opts.behavior && this['_loadcallback_'+opts.behavior] !== undefined) { this['_loadcallback_'+opts.behavior].call(this,box,data); return; } switch (result) { case 'done': this._showdonemsg(); return false; case 'no-append': if (opts.dataType === 'html') { data = '
' + data + '
'; data = $(data).find(opts.itemSelector); } break; case 'append': var children = box.children(); // if it didn't return anything if (children.length === 0) { return this._error('end'); } // use a documentFragment because it works when content is going into a table or UL frag = document.createDocumentFragment(); while (box[0].firstChild) { frag.appendChild(box[0].firstChild); } this._debug('contentSelector', $(opts.contentSelector)[0]); $(opts.contentSelector)[0].appendChild(frag); // previously, we would pass in the new DOM element as context for the callback // however we're now using a documentfragment, which doesn't have parents or children, // so the context is the contentContainer guy, and we pass in an array // of the elements collected as the first argument. data = children.get(); break; } // loadingEnd function opts.loading.finished.call($(opts.contentSelector)[0],opts); // smooth scroll to ease in the new content if (opts.animate) { var scrollTo = $(window).scrollTop() + $(opts.loading.msg).height() + opts.extraScrollPx + 'px'; $('html,body').animate({ scrollTop: scrollTo }, 800, function () { opts.state.isDuringAjax = false; }); } if (!opts.animate) { // once the call is done, we can allow it again. opts.state.isDuringAjax = false; } callback(this, data, url); if (opts.prefill) { this._prefill(); } }, _nearbottom: function infscr_nearbottom() { var opts = this.options, pixelsFromWindowBottomToBottom = 0 + $(document).height() - (opts.binder.scrollTop()) - $(window).height(); // if behavior is defined and this function is extended, call that instead of default if (!!opts.behavior && this['_nearbottom_'+opts.behavior] !== undefined) { return this['_nearbottom_'+opts.behavior].call(this); } this._debug('math:', pixelsFromWindowBottomToBottom, opts.pixelsFromNavToBottom); // if distance remaining in the scroll (including buffer) is less than the orignal nav to bottom.... return (pixelsFromWindowBottomToBottom - opts.bufferPx < opts.pixelsFromNavToBottom); }, // Pause / temporarily disable plugin from firing _pausing: function infscr_pausing(pause) { var opts = this.options; // if behavior is defined and this function is extended, call that instead of default if (!!opts.behavior && this['_pausing_'+opts.behavior] !== undefined) { this['_pausing_'+opts.behavior].call(this,pause); return; } // If pause is not 'pause' or 'resume', toggle it's value if (pause !== 'pause' && pause !== 'resume' && pause !== null) { this._debug('Invalid argument. Toggling pause value instead'); } pause = (pause && (pause === 'pause' || pause === 'resume')) ? pause : 'toggle'; switch (pause) { case 'pause': opts.state.isPaused = true; break; case 'resume': opts.state.isPaused = false; break; case 'toggle': opts.state.isPaused = !opts.state.isPaused; break; } this._debug('Paused', opts.state.isPaused); return false; }, // Behavior is determined // If the behavior option is undefined, it will set to default and bind to scroll _setup: function infscr_setup() { var opts = this.options; // if behavior is defined and this function is extended, call that instead of default if (!!opts.behavior && this['_setup_'+opts.behavior] !== undefined) { this['_setup_'+opts.behavior].call(this); return; } this._binding('bind'); return false; }, // Show done message _showdonemsg: function infscr_showdonemsg() { var opts = this.options; // if behavior is defined and this function is extended, call that instead of default if (!!opts.behavior && this['_showdonemsg_'+opts.behavior] !== undefined) { this['_showdonemsg_'+opts.behavior].call(this); return; } opts.loading.msg .find('img') .hide() .parent() .find('div').html(opts.loading.finishedMsg).animate({ opacity: 1 }, 2000, function () { $(this).parent().fadeOut(opts.loading.speed); }); // user provided callback when done opts.errorCallback.call($(opts.contentSelector)[0],'done'); }, // grab each selector option and see if any fail _validate: function infscr_validate(opts) { for (var key in opts) { if (key.indexOf && key.indexOf('Selector') > -1 && $(opts[key]).length === 0) { this._debug('Your ' + key + ' found no elements.'); return false; } } return true; }, /* ---------------------------- Public methods ---------------------------- */ // Bind to scroll bind: function infscr_bind() { this._binding('bind'); }, // Destroy current instance of plugin destroy: function infscr_destroy() { this.options.state.isDestroyed = true; this.options.loading.finished(); return this._error('destroy'); }, // Set pause value to false pause: function infscr_pause() { this._pausing('pause'); }, // Set pause value to false resume: function infscr_resume() { this._pausing('resume'); }, beginAjax: function infscr_ajax(opts) { var instance = this, path = opts.path, box, desturl, method, condition; // increment the URL bit. e.g. /page/3/ opts.state.currPage++; // Manually control maximum page if ( opts.maxPage != undefined && opts.state.currPage > opts.maxPage ){ opts.state.isBeyondMaxPage = true; this.destroy(); return; } // if we're dealing with a table we can't use DIVs box = $(opts.contentSelector).is('table, tbody') ? $('') : $('
'); desturl = (typeof path === 'function') ? path(opts.state.currPage) : path.join(opts.state.currPage); instance._debug('heading into ajax', desturl); method = (opts.dataType === 'html' || opts.dataType === 'json' ) ? opts.dataType : 'html+callback'; if (opts.appendCallback && opts.dataType === 'html') { method += '+callback'; } switch (method) { case 'html+callback': instance._debug('Using HTML via .load() method'); box.load(desturl + ' ' + opts.itemSelector, undefined, function infscr_ajax_callback(responseText) { instance._loadcallback(box, responseText, desturl); }); break; case 'html': instance._debug('Using ' + (method.toUpperCase()) + ' via $.ajax() method'); $.ajax({ // params url: desturl, dataType: opts.dataType, complete: function infscr_ajax_callback(jqXHR, textStatus) { condition = (typeof (jqXHR.isResolved) !== 'undefined') ? (jqXHR.isResolved()) : (textStatus === "success" || textStatus === "notmodified"); if (condition) { instance._loadcallback(box, jqXHR.responseText, desturl); } else { instance._error('end'); } } }); break; case 'json': instance._debug('Using ' + (method.toUpperCase()) + ' via $.ajax() method'); $.ajax({ dataType: 'json', type: 'GET', url: desturl, success: function (data, textStatus, jqXHR) { condition = (typeof (jqXHR.isResolved) !== 'undefined') ? (jqXHR.isResolved()) : (textStatus === "success" || textStatus === "notmodified"); if (opts.appendCallback) { // if appendCallback is true, you must defined template in options. // note that data passed into _loadcallback is already an html (after processed in opts.template(data)). if (opts.template !== undefined) { var theData = opts.template(data); box.append(theData); if (condition) { instance._loadcallback(box, theData); } else { instance._error('end'); } } else { instance._debug("template must be defined."); instance._error('end'); } } else { // if appendCallback is false, we will pass in the JSON object. you should handle it yourself in your callback. if (condition) { instance._loadcallback(box, data, desturl); } else { instance._error('end'); } } }, error: function() { instance._debug("JSON ajax request failed."); instance._error('end'); } }); break; } }, // Retrieve next set of content items retrieve: function infscr_retrieve(pageNum) { pageNum = pageNum || null; var instance = this, opts = instance.options; // if behavior is defined and this function is extended, call that instead of default if (!!opts.behavior && this['retrieve_'+opts.behavior] !== undefined) { this['retrieve_'+opts.behavior].call(this,pageNum); return; } // for manual triggers, if destroyed, get out of here if (opts.state.isDestroyed) { this._debug('Instance is destroyed'); return false; } // we dont want to fire the ajax multiple times opts.state.isDuringAjax = true; opts.loading.start.call($(opts.contentSelector)[0],opts); }, // Check to see next page is needed scroll: function infscr_scroll() { var opts = this.options, state = opts.state; // if behavior is defined and this function is extended, call that instead of default if (!!opts.behavior && this['scroll_'+opts.behavior] !== undefined) { this['scroll_'+opts.behavior].call(this); return; } if (state.isDuringAjax || state.isInvalidPage || state.isDone || state.isDestroyed || state.isPaused) { return; } if (!this._nearbottom()) { return; } this.retrieve(); }, // Toggle pause value toggle: function infscr_toggle() { this._pausing(); }, // Unbind from scroll unbind: function infscr_unbind() { this._binding('unbind'); }, // update options update: function infscr_options(key) { if ($.isPlainObject(key)) { this.options = $.extend(true,this.options,key); } } }; /* ---------------------------- Infinite Scroll function ---------------------------- Borrowed logic from the following... jQuery UI - https://github.com/jquery/jquery-ui/blob/master/ui/jquery.ui.widget.js jCarousel - https://github.com/jsor/jcarousel/blob/master/lib/jquery.jcarousel.js Masonry - https://github.com/desandro/masonry/blob/master/jquery.masonry.js */ $.fn.infinitescroll = function infscr_init(options, callback) { var thisCall = typeof options; switch (thisCall) { // method case 'string': var args = Array.prototype.slice.call(arguments, 1); this.each(function () { var instance = $.data(this, 'infinitescroll'); if (!instance) { // not setup yet // return $.error('Method ' + options + ' cannot be called until Infinite Scroll is setup'); return false; } if (!$.isFunction(instance[options]) || options.charAt(0) === "_") { // return $.error('No such method ' + options + ' for Infinite Scroll'); return false; } // no errors! instance[options].apply(instance, args); }); break; // creation case 'object': this.each(function () { var instance = $.data(this, 'infinitescroll'); if (instance) { // update options of current instance instance.update(options); } else { // initialize new instance instance = new $.infinitescroll(options, callback, this); // don't attach if instantiation failed if (!instance.failed) { $.data(this, 'infinitescroll', instance); } } }); break; } return this; }; /* * smartscroll: debounced scroll event for jQuery * * https://github.com/lukeshumard/smartscroll * Based on smartresize by @louis_remi: https://github.com/lrbabe/jquery.smartresize.js * * Copyright 2011 Louis-Remi & Luke Shumard * Licensed under the MIT license. * */ var event = $.event, scrollTimeout; event.special.smartscroll = { setup: function () { $(this).bind("scroll", event.special.smartscroll.handler); }, teardown: function () { $(this).unbind("scroll", event.special.smartscroll.handler); }, handler: function (event, execAsap) { // Save the context var context = this, args = arguments; // set correct event type event.type = "smartscroll"; if (scrollTimeout) { clearTimeout(scrollTimeout); } scrollTimeout = setTimeout(function () { $(context).trigger('smartscroll', args); }, execAsap === "execAsap" ? 0 : 100); } }; $.fn.smartscroll = function (fn) { return fn ? this.bind("smartscroll", fn) : this.trigger("smartscroll", ["execAsap"]); }; })(window, jQuery);