/*jslint white: true, indent: 2, onevar: false, browser: true, undef: true, nomen: false, eqeqeq: true, plusplus: false, bitwise: true, regexp: true, strict: false, newcap: true, immed: true */
/*global window, console, jQuery, setTimeout */

/*
 Plugin: iframe autoheight jQuery Plugin
 Version: 1.5.0
 Author and Contributors
 ========================================
 NATHAN SMITH (http://sonspring.com/)
 Jesse House (https://github.com/house9)
 aaron manela (https://github.com/aaronmanela)
 Hideki Abe (https://github.com/hideki-a)
 Patrick Clark (https://github.com/hellopat)
 ChristineP2 (https://github.com/ChristineP2)
 Mmjavellana (https://github.com/Mmjavellana)

 File: jquery.iframe-auto-height.plugin.js
 Remarks: original code from http://sonspring.com/journal/jquery-iframe-sizing
 Description: when the page loads set the height of an iframe based on the height of its contents
 see README: http://github.com/house9/jquery-iframe-auto-height

 */
(function ($) {
    $.fn.iframeAutoHeight = function (spec) {

        // set default option values
        var options = $.extend({
            heightOffset:0,
            minHeight:0,
            callback:function (newHeight) {
            },
            debug:false,
            diagnostics:false // used for development only
        }, spec);

        // logging
        function debug(message) {
            if (options.debug && options.debug === true && window.console) {
                console.log(message);
            }
        }

        // not used by production code
        function showDiagnostics(iframe, calledFrom) {
            debug("Diagnostics from '" + calledFrom + "'");
            try {
                debug("  " + $(iframe, window.top.document).contents().find('body')[0].scrollHeight + " for ...find('body')[0].scrollHeight");
                debug("  " + $(iframe.contentWindow.document).height() + " for ...contentWindow.document).height()");
                debug("  " + $(iframe.contentWindow.document.body).height() + " for ...contentWindow.document.body).height()");
            } catch (ex) {
                // ie fails when called during for each, ok later on
                // probably not an issue if called in a document ready block
                debug("  unable to check in this state");
            }
            debug("End diagnostics -> results vary by browser and when diagnostics are requested");
        }

        // show all option values
        debug(options);

        // ******************************************************
        // iterate over the matched elements passed to the plugin
        $(this).each(function () {
            // for use by webkit only
            var loadCounter = 0;

            // resizeHeight
            function resizeHeight(iframe) {
                if (options.diagnostics) {
                    showDiagnostics(iframe, "resizeHeight");
                }

                // get the iframe body height and set inline style to that plus a little
                var $body = $(iframe).contents().find('body');
                var newHeight = $body[0].scrollHeight + options.heightOffset;

                if (newHeight < options.minHeight) {
                    debug("new height is less than minHeight");
                    newHeight = options.minHeight + options.heightOffset;
                }

                debug("New Height: " + newHeight);
                iframe.style.height = newHeight + 'px';
                options.callback({newFrameHeight:newHeight});
            }

            // debug me
            debug(this);
            if (options.diagnostics) {
                showDiagnostics(this, "each iframe");
            }

            // Check if browser is Opera or Safari (Webkit really, so includes Chrome)
            // if ($.browser.safari || $.browser.opera || $.browser.msie) {
            debug("browser is webkit or opera");

            // Start timer when loaded.
            $(this).load(function () {
                var delay = 0;
                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);
                };

                if (loadCounter === 0) {
                    delay = 500; // delay the first one
                }

                debug("load delay: " + delay);
                setTimeout(delayedResize, delay);
                loadCounter++;
            });

            // 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);
             });
             */
            // } // if browser

        }); // $(this).each(function () {
    }; // $.fn.iframeAutoHeight = function (options) {
}(jQuery)); // (function ($) {