/* @license 
 * jQuery.print, version 1.6.2
 * Licence: CC-By (http://creativecommons.org/licenses/by/3.0/)
 *--------------------------------------------------------------------------*/
(function ($) {
    'use strict';

    // A nice closure for our definitions

    function jQueryCloneWithSelectAndTextAreaValues(
        elmToClone, withDataAndEvents, deepWithDataAndEvents) {
        // Replacement jQuery clone that also clones the values in selects and textareas as jQuery doesn't for performance reasons - https://stackoverflow.com/questions/742810/clone-isnt-cloning-select-values
        // Based on https://github.com/spencertipping/jquery.fix.clone
        var $elmToClone = $(elmToClone),
            $result = $elmToClone.clone(withDataAndEvents, deepWithDataAndEvents),
            $myTextareas = $elmToClone.find('textarea').add($elmToClone.filter('textarea')),
            $resultTextareas = $result.find('textarea').add($result.filter('textarea')),
            $mySelects = $elmToClone.find('select').add($elmToClone.filter('select')),
            $resultSelects = $result.find('select').add($result.filter('select')),
            $myCanvas = $elmToClone.find('canvas').add($elmToClone.filter('canvas')),
            $resultCanvas = $result.find('canvas').add($result.filter('canvas')),
            i, l, j, m, myCanvasContext;

        for (i = 0, l = $myTextareas.length; i < l; ++i) {
            $($resultTextareas[i]).val($($myTextareas[i]).val());
        }
        for (i = 0, l = $mySelects.length; i < l; ++i) {
            for (j = 0, m = $mySelects[i].options.length; j < m; ++j) {
                if ($mySelects[i].options[j].selected === true) {
                    $resultSelects[i].options[j].selected = true;
                }
            }
        }
        for (i = 0, l = $myCanvas.length; i < l; ++i) {
            // https://stackoverflow.com/a/41242597
            myCanvasContext = $myCanvas[i].getContext('2d');
            if (myCanvasContext) {
                $resultCanvas[i].getContext('2d').drawImage($myCanvas[i], 0, 0);
                $($resultCanvas[i]).attr('data-jquery-print', myCanvasContext.canvas.toDataURL());
            }
        }
        return $result;
    }

    function getjQueryObject(string) {
        // Make string a vaild jQuery thing
        var jqObj = $('');
        try {
            jqObj = jQueryCloneWithSelectAndTextAreaValues(string);
        } catch (e) {
            jqObj = $('<span />').html(string);
        }
        return jqObj;
    }

    function printFrame(frameWindow, content, options) {
        // Print the selected window/iframe
        var def = $.Deferred();
        try {
            frameWindow = frameWindow.contentWindow || frameWindow.contentDocument ||
                frameWindow;
            try {
                frameWindow.resizeTo(window.innerWidth, window.innerHeight);
            } catch (err) {
                console.warn(err);
            }
            var wdoc = frameWindow.document || frameWindow.contentDocument ||
                frameWindow;
            if (options.doctype) {
                wdoc.write(options.doctype);
            }
            wdoc.write(content);
            try {
                var canvas = wdoc.querySelectorAll('canvas');
                for (var i = 0; i < canvas.length; i++) {
                    var ctx = canvas[i].getContext('2d');
                    var image = new Image();
                    image.onload = function () {
                        ctx.drawImage(image, 0, 0);
                    };
                    image.src = canvas[i].getAttribute('data-jquery-print');
                }
            } catch (err) {
                console.warn(err);
            }
            wdoc.close();
            var printed = false,
                callPrint = function () {
                    if (printed) {
                        return;
                    }
                    // Fix for IE : Allow it to render the iframe
                    frameWindow.focus();
                    try {
                        // Fix for IE11 - printng the whole page instead of the iframe content
                        if (!frameWindow.document.execCommand('print', false, null)) {
                            // document.execCommand returns false if it failed -http://stackoverflow.com/a/21336448/937891
                            frameWindow.print();
                        }
                        // focus body as it is losing focus in iPad and content not getting printed
                        $('body').focus();
                    } catch (e) {
                        frameWindow.print();
                    }
                    frameWindow.close();
                    printed = true;
                    def.resolve();
                };
            // Print once the frame window loads - seems to work for the new-window option but unreliable for the iframe
            $(frameWindow).on('load', callPrint);
            // Fallback to printing directly if the frame doesn't fire the load event for whatever reason
            setTimeout(callPrint, options.timeout);
        } catch (err) {
            def.reject(err);
        }
        return def;
    }

    function printContentInIFrame(content, options) {
        var $iframe = $(options.iframe + '');
        var iframeCount = $iframe.length;
        if (iframeCount === 0) {
            // Create a new iFrame if none is given
            $iframe = $('<iframe height="0" width="0" border="0" wmode="Opaque"/>').prependTo('body').css({
                'position': 'absolute',
                'top': -999,
                'left': -999,
            });
        }
        var frameWindow = $iframe.get(0);
        return printFrame(frameWindow, content, options).done(function () {
            // Success
            setTimeout(function () {
                // Wait for IE
                if (iframeCount === 0) {
                    // Destroy the iframe if created here
                    $iframe.remove();
                }
            }, 1000);
        }).fail(function (err) {
            // Use the pop-up method if iframe fails for some reason
            console.error('Failed to print from iframe', err);
            printContentInNewWindow(content, options);
        }).always(function () {
            try {
                options.deferred.resolve();
            } catch (err) {
                console.warn('Error notifying deferred', err);
            }
        });
    }

    function printContentInNewWindow(content, options) {
        // Open a new window and print selected content
        var frameWindow = window.open();
        return printFrame(frameWindow, content, options).always(function () {
            try {
                options.deferred.resolve();
            } catch (err) {
                console.warn('Error notifying deferred', err);
            }
        });
    }

    function isNode(o) {
        /* http://stackoverflow.com/a/384380/937891 */
        return !!(typeof Node === 'object' ? o instanceof Node : o && typeof o ===
            'object' && typeof o.nodeType === 'number' && typeof o.nodeName ===
            'string');
    }

    $.print = $.fn.print = function () {
        // Print a given set of elements
        var options, $this, self = this;
        // console.log("Printing", this, arguments);
        if (self instanceof $) {
            // Get the node if it is a jQuery object
            self = self.get(0);
        }
        if (isNode(self)) {
            // If `this` is a HTML element, i.e. for
            // $(selector).print()
            $this = $(self);
            if (arguments.length > 0) {
                options = arguments[0];
            }
        } else {
            if (arguments.length > 0) {
                // $.print(selector,options)
                $this = $(arguments[0]);
                if (isNode($this[0])) {
                    if (arguments.length > 1) {
                        options = arguments[1];
                    }
                } else {
                    // $.print(options)
                    options = arguments[0];
                    $this = $('html');
                }
            } else {
                // $.print()
                $this = $('html');
            }
        }
        // Default options
        var defaults = {
            globalStyles: true,
            mediaPrint: false,
            stylesheet: null,
            noPrintSelector: '.no-print',
            iframe: true,
            append: null,
            prepend: null,
            manuallyCopyFormValues: true,
            deferred: $.Deferred(),
            timeout: 750,
            title: null,
            doctype: '<!doctype html>',
        };
        // Merge with user-options
        options = $.extend({}, defaults, (options || {}));
        var $styles = $('');
        if (options.globalStyles) {
            // Apply the stlyes from the current sheet to the printed page
            $styles = $('style, link, meta, base, title');
        } else if (options.mediaPrint) {
            // Apply the media-print stylesheet
            $styles = $('link[media=print]');
        }
        if (options.stylesheet) {
            // Add a custom stylesheet(s) if given
            if (!(($.isArray ? $.isArray : Array.isArray)(options.stylesheet))) {
                options.stylesheet = [options.stylesheet];
            }
            for (var i = 0; i < options.stylesheet.length; i++) {
                $styles = $.merge($styles,
                    $('<link rel="stylesheet" href="' + options.stylesheet[i] + '">'));
            }
        }
        // Create a copy of the element to print
        var copy = jQueryCloneWithSelectAndTextAreaValues($this, true, true);
        // Wrap it in a span to get the HTML markup string
        copy = $('<span/>').append(copy);
        // Remove unwanted elements
        copy.find(options.noPrintSelector).remove();
        // Add in the styles
        copy.append(jQueryCloneWithSelectAndTextAreaValues($styles));
        // Update title
        if (options.title) {
            var title = $('title', copy);
            if (title.length === 0) {
                title = $('<title />');
                copy.append(title);
            }
            title.text(options.title);
        }
        // Appedned content
        copy.append(getjQueryObject(options.append));
        // Prepended content
        copy.prepend(getjQueryObject(options.prepend));
        if (options.manuallyCopyFormValues) {
            // Manually copy form values into the HTML for printing user-modified input fields
            // http://stackoverflow.com/a/26707753
            copy.find('input').each(function () {
                var $field = $(this);
                if ($field.is('[type=\'radio\']') || $field.is('[type=\'checkbox\']')) {
                    if ($field.prop('checked')) {
                        $field.attr('checked', 'checked');
                    }
                } else {
                    $field.attr('value', $field.val());
                }
            });
            copy.find('select').each(function () {
                var $field = $(this);
                $field.find(':selected').attr('selected', 'selected');
            });
            copy.find('textarea').each(function () {
                // Fix for https://github.com/DoersGuild/jQuery.print/issues/18#issuecomment-96451589
                var $field = $(this);
                $field.text($field.val());
            });
        }
        // Get the HTML markup string
        var content = copy.html();
        // Notify with generated markup & cloned elements - useful for logging, etc
        try {
            options.deferred.notify('generated_markup', content, copy);
        } catch (err) {
            console.warn('Error notifying deferred', err);
        }
        // Destroy the copy
        copy.remove();
        if (options.iframe) {
            // Use an iframe for printing
            try {
                printContentInIFrame(content, options);
            } catch (e) {
                // Use the pop-up method if iframe fails for some reason
                console.error('Failed to print from iframe', e.stack, e.message);
                printContentInNewWindow(content, options);
            }
        } else {
            // Use a new window for printing
            printContentInNewWindow(content, options);
        }
        return this;
    };
})(jQuery);
