koha-tmpl/opac-tmpl/bootstrap/js/google-jackets.js

   1 if (typeof KOHA == "undefined" || !KOHA) {
   2     var KOHA = {};
   3 }
   4
   5 /**
   6  * A namespace for Google related functions.
   7  */
   8 KOHA.Google = {
   9
  10
  11     /**
  12      * Search all:
  13      *    <div title="biblionumber" id="isbn" class="gbs-thumbnail"></div>
  14      * or
  15      *    <div title="biblionumber" id="isbn" class="gbs-thumbnail-preview"></div>
  16      * and run a search with all collected isbns to Google Book Search.
  17      * The result is asynchronously returned by Google and catched by
  18      * gbsCallBack().
  19      */
  20     GetCoverFromIsbn: function(newWindow) {
  21         var bibkeys = [];
  22         $("[id^=gbs-thumbnail]").each(function(i) {
  23             bibkeys.push($(this).attr("class")); // id=isbn
  24         });
  25         bibkeys = bibkeys.join(',');
  26         var scriptElement = document.createElement("script");
  27         this.openInNewWindow=newWindow;
  28         scriptElement.setAttribute("id", "jsonScript");
  29         scriptElement.setAttribute("src",
  30             "https://books.google.com/books?bibkeys=" + escape(bibkeys) +
  31             "&jscmd=viewapi&callback=KOHA.Google.gbsCallBack");
  32         scriptElement.setAttribute("type", "text/javascript");
  33         document.documentElement.firstChild.appendChild(scriptElement);
  34
  35     },
  36
  37     /**
  38      * Add cover pages <div
  39      * and link to preview if div id is gbs-thumbnail-preview
  40      */
  41     gbsCallBack: function(booksInfo) {
  42          var target = '';
  43          if (this.openInNewWindow) {
  44             target = 'target="_blank" rel="noreferrer" ';
  45          }
  46          for (id in booksInfo) {
  47              var book = booksInfo[id];
  48              $("[id^=gbs-thumbnail]."+book.bib_key).each(function() {
  49                  if (typeof(book.thumbnail_url) != "undefined") {
  50                      if ( $(this).data('use-data-link') ) {
  51                          var a = document.createElement("a");
  52                          a.href = book.thumbnail_url;
  53                          var img = document.createElement("img");
  54                          img.src = book.thumbnail_url;
  55                          img.setAttribute('data-link', book.info_url);
  56                          a.append(img)
  57                          $(this).empty().append(a);
  58                      } else {
  59                          var img = document.createElement("img");
  60                          img.src = book.thumbnail_url;
  61                          $(this).empty().append(img);
  62                          var re = /^gbs-thumbnail-preview/;
  63                          if ( re.exec($(this).attr("id")) ) {
  64                              $(this).append(
  65                                  '<div class="google-books-preview">' +
  66                                  '<a '+target+'href="' +
  67                                  book.info_url +
  68                                  '"><img src="' +
  69                                  'https://books.google.com/intl/en/googlebooks/images/gbs_preview_sticker1.gif' +
  70                                  '"></a></div>'
  71                                  );
  72                          }
  73                      }
  74                  } else {
  75                      var message = document.createElement("span");
  76                      $(message).attr("class","no-image");
  77                      $(message).html(NO_GOOGLE_JACKET);
  78                      $(this).empty().append(message);
  79                  }
  80              });
  81         }
  82         this.done = 1;
  83     }
  84 };