/* @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);