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Diffstat (limited to 'media/feincms/jquery.livequery.js')
| -rw-r--r-- | media/feincms/jquery.livequery.js | 250 |
1 files changed, 250 insertions, 0 deletions
diff --git a/media/feincms/jquery.livequery.js b/media/feincms/jquery.livequery.js new file mode 100644 index 0000000..dde8ad8 --- /dev/null +++ b/media/feincms/jquery.livequery.js @@ -0,0 +1,250 @@ +/*! Copyright (c) 2008 Brandon Aaron (http://brandonaaron.net) + * Dual licensed under the MIT (http://www.opensource.org/licenses/mit-license.php) + * and GPL (http://www.opensource.org/licenses/gpl-license.php) licenses. + * + * Version: 1.0.3 + * Requires jQuery 1.1.3+ + * Docs: http://docs.jquery.com/Plugins/livequery + */ + +(function($) { + +$.extend($.fn, { + livequery: function(type, fn, fn2) { + var self = this, q; + + // Handle different call patterns + if ($.isFunction(type)) + fn2 = fn, fn = type, type = undefined; + + // See if Live Query already exists + $.each( $.livequery.queries, function(i, query) { + if ( self.selector == query.selector && self.context == query.context && + type == query.type && (!fn || fn.$lqguid == query.fn.$lqguid) && (!fn2 || fn2.$lqguid == query.fn2.$lqguid) ) + // Found the query, exit the each loop + return (q = query) && false; + }); + + // Create new Live Query if it wasn't found + q = q || new $.livequery(this.selector, this.context, type, fn, fn2); + + // Make sure it is running + q.stopped = false; + + // Run it immediately for the first time + q.run(); + + // Contnue the chain + return this; + }, + + expire: function(type, fn, fn2) { + var self = this; + + // Handle different call patterns + if ($.isFunction(type)) + fn2 = fn, fn = type, type = undefined; + + // Find the Live Query based on arguments and stop it + $.each( $.livequery.queries, function(i, query) { + if ( self.selector == query.selector && self.context == query.context && + (!type || type == query.type) && (!fn || fn.$lqguid == query.fn.$lqguid) && (!fn2 || fn2.$lqguid == query.fn2.$lqguid) && !this.stopped ) + $.livequery.stop(query.id); + }); + + // Continue the chain + return this; + } +}); + +$.livequery = function(selector, context, type, fn, fn2) { + this.selector = selector; + this.context = context || document; + this.type = type; + this.fn = fn; + this.fn2 = fn2; + this.elements = []; + this.stopped = false; + + // The id is the index of the Live Query in $.livequery.queries + this.id = $.livequery.queries.push(this)-1; + + // Mark the functions for matching later on + fn.$lqguid = fn.$lqguid || $.livequery.guid++; + if (fn2) fn2.$lqguid = fn2.$lqguid || $.livequery.guid++; + + // Return the Live Query + return this; +}; + +$.livequery.prototype = { + stop: function() { + var query = this; + + if ( this.type ) + // Unbind all bound events + this.elements.unbind(this.type, this.fn); + else if (this.fn2) + // Call the second function for all matched elements + this.elements.each(function(i, el) { + query.fn2.apply(el); + }); + + // Clear out matched elements + this.elements = []; + + // Stop the Live Query from running until restarted + this.stopped = true; + }, + + run: function() { + // Short-circuit if stopped + if ( this.stopped ) return; + var query = this; + + var oEls = this.elements, + els = $(this.selector, this.context), + nEls = els.not(oEls); + + // Set elements to the latest set of matched elements + this.elements = els; + + if (this.type) { + // Bind events to newly matched elements + nEls.bind(this.type, this.fn); + + // Unbind events to elements no longer matched + if (oEls.length > 0) + $.each(oEls, function(i, el) { + if ( $.inArray(el, els) < 0 ) + $.event.remove(el, query.type, query.fn); + }); + } + else { + // Call the first function for newly matched elements + nEls.each(function() { + query.fn.apply(this); + }); + + // Call the second function for elements no longer matched + if ( this.fn2 && oEls.length > 0 ) + $.each(oEls, function(i, el) { + if ( $.inArray(el, els) < 0 ) + query.fn2.apply(el); + }); + } + } +}; + +$.extend($.livequery, { + guid: 0, + queries: [], + queue: [], + running: false, + timeout: null, + + checkQueue: function() { + if ( $.livequery.running && $.livequery.queue.length ) { + var length = $.livequery.queue.length; + // Run each Live Query currently in the queue + while ( length-- ) + $.livequery.queries[ $.livequery.queue.shift() ].run(); + } + }, + + pause: function() { + // Don't run anymore Live Queries until restarted + $.livequery.running = false; + }, + + play: function() { + // Restart Live Queries + $.livequery.running = true; + // Request a run of the Live Queries + $.livequery.run(); + }, + + registerPlugin: function() { + $.each( arguments, function(i,n) { + // Short-circuit if the method doesn't exist + if (!$.fn[n]) return; + + // Save a reference to the original method + var old = $.fn[n]; + + // Create a new method + $.fn[n] = function() { + // Call the original method + var r = old.apply(this, arguments); + + // Request a run of the Live Queries + $.livequery.run(); + + // Return the original methods result + return r; + } + }); + }, + + run: function(id) { + if (id != undefined) { + // Put the particular Live Query in the queue if it doesn't already exist + if ( $.inArray(id, $.livequery.queue) < 0 ) + $.livequery.queue.push( id ); + } + else + // Put each Live Query in the queue if it doesn't already exist + $.each( $.livequery.queries, function(id) { + if ( $.inArray(id, $.livequery.queue) < 0 ) + $.livequery.queue.push( id ); + }); + + // Clear timeout if it already exists + if ($.livequery.timeout) clearTimeout($.livequery.timeout); + // Create a timeout to check the queue and actually run the Live Queries + $.livequery.timeout = setTimeout($.livequery.checkQueue, 20); + }, + + stop: function(id) { + if (id != undefined) + // Stop are particular Live Query + $.livequery.queries[ id ].stop(); + else + // Stop all Live Queries + $.each( $.livequery.queries, function(id) { + $.livequery.queries[ id ].stop(); + }); + } +}); + +// Register core DOM manipulation methods +$.livequery.registerPlugin('append', 'prepend', 'after', 'before', 'wrap', 'attr', 'removeAttr', 'addClass', 'removeClass', 'toggleClass', 'empty', 'remove'); + +// Run Live Queries when the Document is ready +$(function() { $.livequery.play(); }); + + +// Save a reference to the original init method +var init = $.prototype.init; + +// Create a new init method that exposes two new properties: selector and context +$.prototype.init = function(a,c) { + // Call the original init and save the result + var r = init.apply(this, arguments); + + // Copy over properties if they exist already + if (a && a.selector) + r.context = a.context, r.selector = a.selector; + + // Set properties + if ( typeof a == 'string' ) + r.context = c || document, r.selector = a; + + // Return the result + return r; +}; + +// Give the init function the jQuery prototype for later instantiation (needed after Rev 4091) +$.prototype.init.prototype = $.prototype; + +})(jQuery);
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