if (typeof NEWSBLUR == 'undefined') NEWSBLUR = {};
if (typeof NEWSBLUR.Globals == 'undefined') NEWSBLUR.Globals = {};

/* ============================= */
/* = Core NewsBlur Javascript = */
/* ============================= */

NEWSBLUR.log = function(msg) {
    try {
        if (typeof o == "object")
        {
            var new_m = [];
            for (var i=0; i < msg.length; i++) {
                if (i!=0) new_m.push(msg[i]);
            }
            console.debug(msg[0], new_m);
        }
        else
        {
            console.log(msg);  
        }      
    } catch(e) {
        console = 
        { 
            log: function() {} 
        };
    }
};

(function($) {

    $.fn.extend({
        
        isScrollVisible: function($elem) {
            var docViewTop = 0; // $(this).scrollTop();
            var docViewBottom = docViewTop + $(this).height();
            var docOffset = $(this).offset().top;

            var elemTop = $elem.offset().top - docOffset;
            var elemBottom = elemTop + $elem.outerHeight();

            // NEWSBLUR.log(['isScrollVisible', docViewTop, docViewBottom, docOffset, elemTop, elemBottom]);
            
            return ((elemTop >= docViewTop) && (elemBottom <= docViewBottom));
        }
        
    });
    
    $.extend({

		deepCopy: function(obj) {
			var type = $.typeOf(obj);
			switch (type) {
				case 'object':
					var o = {};
					for (key in obj) {
						o[key] = $.deepCopy(obj[key]);
					};
					return o;
				case 'array':
					var a = [];
					for (var i = 0; i < obj.length; i++) {
						a.push($.deepCopy(obj[i]));
					}
					return a;
				default:
					return obj;
			};
		},

		typeOf: function(value) {
		    var s = typeof value;
		    if (s == 'object') {
		        if (value) {
		            if (typeof value.length == 'number' &&
		                !(value.propertyIsEnumerable('length')) &&
		                typeof value.splice == 'function') {
		                    s = 'array';
		            }
		        } else {
		            s = 'null';
		        }
		    }
		    return s;
		},

		targetIs: function(e, opts, callback){
			if(!e || !opts){ return false; }
			// defaults
			// (want to make this explicit, since it's a little weird)
			opts = {
				childOf: opts.childOf || null,
				tagSelector: opts.tagSelector || null,
				cancelBubbling: opts.cancelBubbling || false
			};
			var target = e.target;
			var $t = $(target);
			var $p = null;
			var fails = false;
			if(opts.childOf){
				$p = $t.parents(opts.childOf).eq(0);
				if(!$p[0]){
					fails = true;
				}
			}
			if(opts.tagSelector){
				var ts = opts.tagSelector;
				if(!$t.is(ts)){
					if(opts.cancelBubbling){
						fails = true;
					}else{
						$tp = $t.parents(ts).eq(0);
						if(!$tp[0]){
							fails = true;
						}else{
							// we are going to assume dev
							// wants the $elem we bubbled to
							$t = $tp;
						}
					}
				};
			}
			if(fails){
				return false;
			}else{
				if(callback && typeof callback == 'function'){
					callback($t, $p);
				}
				return true;
			}
		},

		make: function(){
			var $elem,text,children,type,name,props;
			var args = arguments;
			var tagname = args[0];
			if(args[1]){
				if (typeof args[1]=='string'){
					text = args[1];
				}else if(typeof args[1]=='object' && args[1].push){
				  children = args[1];
				}else{
					props = args[1];
				}
			}
			if(args[2]){
				if(typeof args[2]=='string'){
					text = args[2];
				}else if(typeof args[1]=='object' && args[2].push){
				  children = args[2];
				}
			}
			if(tagname == 'text' && text){
			    return document.createTextNode(text);
			}else{
    			$elem = $(document.createElement(tagname));
    			if(props){
    				for(var propname in props){
    				  if (props.hasOwnProperty(propname)) {
    				        if($elem.is(':input') && propname == 'value'){
    				            $elem.val(props[propname]);
    				        } else {
    				            $elem.attr(propname, props[propname]);
    				        }
    					}
    				}
    			}
    			if(children){
    				for(var i=0;i<children.length;i++){
    					if(children[i]){
    						$elem.append(children[i]);
    					}
    				}
    			}
    			if(text){
    				$elem.html(text);
    			}
    			return $elem;
    		}
		},
		
		rescope: function(func, thisArg){
			return function(a, b, c, d, e, f){
				func.call(thisArg, this, a, b, c, d, e, f);
			};
		}

	});
})(jQuery);

// ------- IE Debug -------- //

(function($) {
	var _$ied;
    $.extend({
		iedebug: function(msg){
			if(!_$ied){
				_$ied = $.make('div', [
					$.make('ol')
				]).css({
					'position': 'absolute',
					'top': 10,
					'left': 10,
					'zIndex': 20000,
					'border': '1px solid #000',
					'padding': '10px',
					'backgroundColor': '#fff',
					'fontFamily': 'arial,helvetica,sans-serif',
					'fontSize': '11px'
				});
				$('body').append(_$ied);
				_$ied.draggable();
			}
			_$ied.find('ol').append($.make('li', msg).css({
				'borderBottom': '1px solid #999999'
			}));
		}
	});
})(jQuery);