/*
Plugin: iframe autoheight jQuery Plugin
Author and Contributors
========================================
NATHAN SMITH (original code)
Jesse House (converted to plugin)
aaron manela (https://github.com/aaronmanela)
Hideki Abe (https://github.com/hideki-a)
Patrick Clark (https://github.com/hellopat)
File: jquery.iframe-auto-height.plugin.js
Description: when the page loads set the height of an iframe based on the height of its contents
Remarks: original code from http://sonspring.com/journal/jquery-iframe-sizing
Version: 1.4.0 - see README: http://github.com/house9/jquery-iframe-auto-height
*/
(function ($) {
    $.fn.iframeAutoHeight = function (options) {
      
        // set default option values
        var options = $.extend({
            heightOffset: 0,
            callback: function(newHeight) {},
            debug: false
        }, options);
        debug(options);

        // iterate over the matched elements passed to the plugin
        $(this).each(function () {
            debug(this);
            
            // Check if browser is Opera or Safari (Webkit really, so includes Chrome)
            if ($.browser.safari || $.browser.opera) {
                debug("browser is webkit or opera");
                
                // Start timer when loaded.
                $(this).load(function () {
                    var iframe = this;
                    // Reset iframe height to 0 to force new frame size to fit window properly
                    iframe.style.height = '0px';
                    var delayedResize = function () {
                        resizeHeight(iframe);
                    };
                    setTimeout(delayedResize, 0);
                });

                // Safari and Opera need a kick-start.
                var source = $(this).attr('src');
                $(this).attr('src', '');
                $(this).attr('src', source);
            }
            else {
                // For other browsers.
                $(this).load(function () {
                    resizeHeight(this);
                });
            }

            // resizeHeight
            function resizeHeight(iframe) {
                // Set inline style to equal the body height of the iframed content plus a little
                var newHeight;
                if (isQuirksMode(iframe)) {
                    newHeight = iframe.contentWindow.document.body.scrollHeight + options.heightOffset;
                } else {
                    newHeight = iframe.contentWindow.document.body.offsetHeight + options.heightOffset;
                }
                debug("New Height: " + newHeight);
                iframe.style.height = newHeight + 'px';
                options.callback({newFrameHeight:newHeight});
            }
            
            function isQuirksMode(iframe) {
                if (iframe.contentWindow.document.compatMode && 'ActiveXObject' in window && 'function' === typeof window.ActiveXObject) {
                    debug("IE Quirks mode");
                    return true;
                }
                // else
                return false;
            }
            
        }); // $(this).each(function () {
        
        // logging
        function debug(message) {
            if (window.console && options.debug && options.debug == true) {
                console.log(message);
            }
        }
    } // $.fn.iframeAutoHeight = function (options) {
})(jQuery); // (function ($) {