/* @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);