// FrameManager.js -- Must be added in Hosting window
var FrameManager =
{
    currentFrameId : '',
    currentFrameHeight : 0,
    currentFrameUrl : '',
    lastFrameId : '',
    lastFrameHeight : 0,
    lastFrameUrl : '',
    resizeTimerId : null,

    init : function()
    {
        if (FrameManager.resizeTimerId == null)
        {
            FrameManager.resizeTimerId = window.setInterval(FrameManager.resizeFrames, 500);
        }
    },

    resizeFrames : function()
    {
        FrameManager.retrieveFrameIdAndHeight();

        var changed = false;
        
        var currentFrameId = FrameManager.currentFrameId;
        var currentFrameHeight = FrameManager.currentFrameHeight;
        var currentFrameUrl = FrameManager.currentFrameUrl;
        
        if ((currentFrameId != FrameManager.lastFrameId) ||
            (currentFrameHeight != FrameManager.lastFrameHeight) ||
            (currentFrameUrl != FrameManager.lastFrameUrl))
        {
            FrameManager.lastFrameId = currentFrameId;
            FrameManager.lastFrameHeight = currentFrameHeight;
            FrameManager.lastFrameUrl = currentFrameUrl;

            var iframe = document.getElementById(currentFrameId.toString());

            if ((iframe != null) && (currentFrameHeight > 0))
            {
                iframe.style.height = currentFrameHeight.toString() + "px";
            }

            window.location.hash = '#';
        }
    },

    retrieveFrameIdAndHeight : function()
    {
        if (window.location.hash.length == 0) return;

        var hashValue = window.location.hash.substring(1);

        if ((hashValue == null) || (hashValue.length == 0)) return;

        var pairs = hashValue.split('&');

        if ((pairs != null) && (pairs.length > 0))
        {
            for(var i = 0; i < pairs.length; i++)
            {
                var pair = pairs[i].split('=');

                if ((pair != null) && (pair.length > 0))
                {
                    if (pair[0] == 'frameId')
                    {
                        if ((pair[1] != null) && (pair[1].length > 0))
                        {
                            FrameManager.currentFrameId = pair[1];
                        }
                    }
                    else if (pair[0] == 'height')
                    {
                        var height = parseInt(pair[1]);

                        if (!isNaN(height))
                        {
                            FrameManager.currentFrameHeight = height;
                            FrameManager.currentFrameHeight += 15;
                        }
                    }
                    else if (pair[0] == 'url')
                    {
                        if ((pair[1] != null) && (pair[1].length > 0))
                        {
                            FrameManager.currentFrameUrl = decodeURIComponent(pair[1]);
                        }
                    }
                }
            }
        }
    },

    registerFrame : function(frame)
    {
        FrameManager.currentFrameId = frame.id;

//        var currentLocation = location.href.split("#")[0];
//        
//        if (FrameManager.currentFrameUrl == "-") return;

//        var frameSrc = frame.src;
//        if (FrameManager.currentFrameUrl != "")
//            frameSrc = FrameManager.currentFrameUrl;
//        
//        frameSrc = frameSrc.split("?frameId")[0];
//        frameSrc = frameSrc.split("&frameId")[0];
//        alert("register: " + frameSrc);
//        
//        frame.contentWindow.location = frameSrc + (frameSrc.indexOf('?') > 0 ? '&' : '?') + 'frameId=' + frame.id + '&TopLocation=' + currentLocation;

    }
};

window.setTimeout(FrameManager.init, 300);