/**
* SRAX Anchor Mix v0.9 beta (build 1)
* Mix of AJAX & Standard Anchors - MASA
* http://www.fullajax.ru
* Copyright(c) 2008-2009, Ruslan Sinitskiy.
* http://fullajax.ru/#:license
**/

(function($){
    var D = $.Default;
    D.ANCHOR = {
        ANIM_SCROLL : 0,
        RECURSIVE : 0,
        prefix : 'anchor',
        id : '_GLOBAL_'
    }
    var getPos = function(obj) {
        obj = $.get(obj);
        var x = 0, y = 0;
        while (obj) {
            x += obj.offsetLeft;
            y += obj.offsetTop;            
            obj = obj.offsetParent; 
        }                      
        return {x:x, y:y}
    }
        
    //SCROLL
    
    function anchor2target(anchor, add2history, id){
        var el = $.get(anchor);
        if (!el){
          var trgt = document.getElementsByName(anchor);
          for (var i = 0; i < trgt.length; i++){
              if (trgt[i].nodeName == 'A'){
                  el = trgt[i];
              }            
          }
        }
        if (el){
          //scroll(el, 0, 1)
          if (add2history) $.History.add(id || D.ANCHOR.id, anchor, D.ANCHOR.prefix);
          return false;
        }
    }
    
    $.Filter.on('beforewrap', function(ops){
        var el = ops.el;
        if (el.nodeName == 'A' && !el.anchored){
            var uri = $.parseUri(el.href),
                anchor = uri.anchor;
            if (anchor){
                el.onclick = function(){
                    var id;
                    if (el.options) {
                        id = el.options.id;
                        //el.href = el.href.replace('#' + anchor, '#:' + D.ANCHOR.prefix + ':' + id + ':' + anchor);
                        var thread = $.Html.thread[id],
                            path = $.delHost($.parseUri(el.href).path);
                        if (thread && path == $.delHost($.parseUri(thread.history.currentUrl()).path)){
                        } else if (path != $.delHost($.parseUri(location.href).path)) return;
                    } else {
                        id = ops.layer == document ? null : ops.layer.id;
                    }
                    var useHistory = ops.ops ? !ops.ops.nohistory : 1;
                    return anchor2target(anchor, useHistory, id);
                }
                el.anchored = 1;
            }
        }
    })
    
    var anchorListener = function(ops){
        var hash = $.getHash(),
            prevAx = $.parseAxHash($.History.previous, D.ANCHOR.prefix);
            curAx = $.parseAxHash(hash, D.ANCHOR.prefix);
        for (var id in curAx){            
            var anchor = curAx[id];
            var ownerAnchor = ops && ops.owner ? $.parseUri(ops.url).anchor : 1;
            if (ops && ops.id == id ? ownerAnchor: prevAx[id] != anchor) {
                anchor2target(anchor);
            }
        }
    }

    $.linkEqual[D.ANCHOR.prefix+':'+D.ANCHOR.id+':']= '$';     
    $.onReady(function(){
        $.History.prefixListener[D.ANCHOR.prefix] = anchorListener;
        anchorListener({id:D.ANCHOR.id});
        $.Html.onall('load', anchorListener);
        $.History.on('beforeadd', function(ops){
            log(ops)
            var hash = ops.hash.replaceAll('#:',':');
            var anchor = $.parseUri(ops.url).anchor;
            log(hash)
            hash = hash.replace('#' + anchor, ':' + D.ANCHOR.prefix + ':' + ops.id + ':' + anchor);
            log(hash)
            if (!hash.startWith('#')) hash = '#' + hash;
            return hash;
        })
    })
    
   // $.scroll = function(el, anim, recursive){
   //     scroll($.get(el), 0, 1, anim, recursive)
   // }
    
})(SRAX)