jquery/src/deprecated.js

// Limit scope pollution from any deprecated API
(function() {

var matched, browser, eventAdd, eventRemove,
	oldToggle = jQuery.fn.toggle,
	rhoverHack = /(?:^|\s)hover(\.\S+|)\b/,
	hoverHack = function( events ) {
		return jQuery.event.special.hover ? events : events.replace( rhoverHack, "mouseenter$1 mouseleave$1" );
	};

// Use of jQuery.browser is frowned upon.
// More details: http://api.jquery.com/jQuery.browser
// jQuery.uaMatch maintained for back-compat
jQuery.uaMatch = function( ua ) {
	ua = ua.toLowerCase();

	var match = /(chrome)[ \/]([\w.]+)/.exec( ua ) ||
		/(webkit)[ \/]([\w.]+)/.exec( ua ) ||
		/(opera)(?:.*version|)[ \/]([\w.]+)/.exec( ua ) ||
		/(msie) ([\w.]+)/.exec( ua ) ||
		ua.indexOf("compatible") < 0 && /(mozilla)(?:.*? rv:([\w.]+)|)/.exec( ua ) ||
		[];

	return {
		browser: match[ 1 ] || "",
		version: match[ 2 ] || "0"
	};
};

matched = jQuery.uaMatch( navigator.userAgent );
browser = {};

if ( matched.browser ) {
	browser[ matched.browser ] = true;
	browser.version = matched.version;
}

// Chrome is Webkit, but Webkit is also Safari.
if ( browser.chrome ) {
	browser.webkit = true;
} else if ( browser.webkit ) {
	browser.safari = true;
}

jQuery.browser = browser;

jQuery.sub = function() {
	function jQuerySub( selector, context ) {
		return new jQuerySub.fn.init( selector, context );
	}
	jQuery.extend( true, jQuerySub, this );
	jQuerySub.superclass = this;
	jQuerySub.fn = jQuerySub.prototype = this();
	jQuerySub.fn.constructor = jQuerySub;
	jQuerySub.sub = this.sub;
	jQuerySub.fn.init = function init( selector, context ) {
		if ( context && context instanceof jQuery && !(context instanceof jQuerySub) ) {
			context = jQuerySub( context );
		}

		return jQuery.fn.init.call( this, selector, context, rootjQuerySub );
	};
	jQuerySub.fn.init.prototype = jQuerySub.fn;
	var rootjQuerySub = jQuerySub(document);
	return jQuerySub;
};

jQuery.fn.toggle = function( fn, fn2 ) {

	if ( !jQuery.isFunction( fn ) || !jQuery.isFunction( fn2 ) ) {
		return oldToggle.apply( this, arguments );
	}

	// Save reference to arguments for access in closure
	var args = arguments,
			guid = fn.guid || jQuery.guid++,
			i = 0,
			toggler = function( event ) {
				// Figure out which function to execute
				var lastToggle = ( jQuery._data( this, "lastToggle" + fn.guid ) || 0 ) % i;
				jQuery._data( this, "lastToggle" + fn.guid, lastToggle + 1 );

				// Make sure that clicks stop
				event.preventDefault();

				// and execute the function
				return args[ lastToggle ].apply( this, arguments ) || false;
			};

	// link all the functions, so any of them can unbind this click handler
	toggler.guid = guid;
	while ( i < args.length ) {
		args[ i++ ].guid = guid;
	}

	return this.click( toggler );
};


// Support for 'hover' type
eventAdd = jQuery.event.add;

//	Duck punch jQuery.event.add, and jquery.event.remove
//	Signatures:
//	jQuery.event = {
//	add: function( elem, types, handler, data, selector ) {
//	remove: function( elem, types, handler, selector, mappedTypes ) {
jQuery.event.add = function( elem, types, handler, data, selector ){
	if ( types ) {
		types = hoverHack( types );
	}
	eventAdd.call( this, elem, types, handler, data, selector );
};

eventRemove = jQuery.event.remove;

jQuery.event.remove = function( elem, types, handler, selector, mappedTypes ){
	if ( types ) {
		types = hoverHack( types );
	}
	eventRemove.call( this, elem, types, handler, selector, mappedTypes );
};

// Unused in 1.8, left in so attrFn-stabbers won't die; remove in 1.9
jQuery.attrFn = {};

})();