sazze/node-pm

/*!
 * jQuery.LocalScroll
 * Copyright (c) 2007-2013 Ariel Flesler - aflesler<a>gmail<d>com | http://flesler.blogspot.com
 * Dual licensed under MIT and GPL.
 * http://flesler.blogspot.com/2007/10/jquerylocalscroll-10.html
 * @author Ariel Flesler
 * @version 1.2.8
 *
 * @id jQuery.fn.localScroll
 * @param {Object} settings Hash of settings, it is passed in to jQuery.ScrollTo, none is required.
 * @return {jQuery} Returns the same jQuery object, for chaining.
 *
 * @example $('ul.links').localScroll();
 *
 * @example $('ul.links').localScroll({ filter:'.animated', duration:400, axis:'x' });
 *
 * @example $.localScroll({ target:'#pane', axis:'xy', queue:true, event:'mouseover' });
 *
 * Notes:
 *    - The plugin requires jQuery.ScrollTo.
 *    - The hash of settings, is passed to jQuery.ScrollTo, so the settings are valid for that plugin as well.
 *    - jQuery.localScroll can be used if the desired links, are all over the document, it accepts the same settings.
 *  - If the setting 'lazy' is set to true, then the binding will still work for later added anchors.
 *    - If onBefore returns false, the event is ignored.
 */
;(function( $ ){
    var URI = location.href.replace(/#.*/,''); // local url without hash

    var $localScroll = $.localScroll = function( settings ){
        $('body').localScroll( settings );
    };

    // Many of these defaults, belong to jQuery.ScrollTo, check it's demo for an example of each option.
    // @see http://flesler.demos.com/jquery/scrollTo/
    // The defaults are public and can be overriden.
    $localScroll.defaults = {
        duration:1000, // How long to animate.
        axis:'y', // Which of top and left should be modified.
        event:'click', // On which event to react.
        stop:true, // Avoid queuing animations 
        target: window, // What to scroll (selector or element). The whole window by default.
        reset: true // Used by $.localScroll.hash. If true, elements' scroll is resetted before actual scrolling
        /*
        lock:false, // ignore events if already animating
        lazy:false, // if true, links can be added later, and will still work.
        filter:null, // filter some anchors out of the matched elements.
        hash: false // if true, the hash of the selected link, will appear on the address bar.
        */
    };

    // If the URL contains a hash, it will scroll to the pointed element
    $localScroll.hash = function( settings ){
        if( location.hash ){
            settings = $.extend( {}, $localScroll.defaults, settings );
            settings.hash = false; // can't be true
            
            if( settings.reset ){
                var d = settings.duration;
                delete settings.duration;
                $(settings.target).scrollTo( 0, settings );
                settings.duration = d;
            }
            scroll( 0, location, settings );
        }
    };

    $.fn.localScroll = function( settings ){
        settings = $.extend( {}, $localScroll.defaults, settings );

        return settings.lazy ?
            // use event delegation, more links can be added later.        
            this.bind( settings.event, function( e ){
                // Could use closest(), but that would leave out jQuery -1.3.x
                var a = $([e.target, e.target.parentNode]).filter(filter)[0];
                // if a valid link was clicked
                if( a )
                    scroll( e, a, settings ); // do scroll.
            }) :
            // bind concretely, to each matching link
            this.find('a,area')
                .filter( filter ).bind( settings.event, function(e){
                    scroll( e, this, settings );
                }).end()
            .end();

        function filter(){// is this a link that points to an anchor and passes a possible filter ? href is checked to avoid a bug in FF.
            return !!this.href && !!this.hash && this.href.replace(this.hash,'') == URI && (!settings.filter || $(this).is( settings.filter ));
        };
    };

    function scroll( e, link, settings ){
        var id = link.hash.slice(1),
            elem = document.getElementById(id) || document.getElementsByName(id)[0];

        if ( !elem )
            return;

        if( e )
            e.preventDefault();

        var $target = $( settings.target );

        if( settings.lock && $target.is(':animated') ||
            settings.onBefore && settings.onBefore(e, elem, $target) === false ) 
            return;

        if( settings.stop )
            $target._scrollable().stop(true); // remove all its animations

        if( settings.hash ){
            var attr = elem.id == id ? 'id' : 'name',
                $a = $('<a> </a>').attr(attr, id).css({
                    position:'absolute',
                    top: $(window).scrollTop(),
                    left: $(window).scrollLeft()
                });

            elem[attr] = '';
            $('body').prepend($a);
            location = link.hash;
            $a.remove();
            elem[attr] = id;
        }
            
        $target
            .scrollTo( elem, settings ) // do scroll
            .trigger('notify.serialScroll',[elem]); // notify serialScroll about this change
    };

})( jQuery );