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             "http://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" ';
  45          }
  46          for (id in booksInfo) {
  47              var book = booksInfo[id];
  48              $("[id^=gbs-thumbnail]."+book.bib_key).each(function() {
  49                  var a = document.createElement("a");
  50                  a.href = book.info_url;
  51                  if (typeof(book.thumbnail_url) != "undefined") {
  52                      var img = document.createElement("img");
  53                      img.src = book.thumbnail_url;
  54                      $(this).empty().append(img);
  55                      var re = /^gbs-thumbnail-preview/;
  56                      if ( re.exec($(this).attr("id")) ) {
  57                          $(this).append(
  58                              '<div style="margin-bottom:5px; margin-top:-5px;font-size:9px">' +
  59                              '<a '+target+'href="' +
  60                              book.info_url +
  61                              '"><img src="' +
  62                              'http://books.google.com/intl/en/googlebooks/images/gbs_preview_sticker1.gif' +
  63                              '"></a></div>'
  64                              );
  65                      }
  66                  } else {
  67                      var message = document.createElement("span");
  68                      $(message).attr("class","no-image");
  69                      $(message).html(NO_GOOGLE_JACKET);
  70                      $(this).empty().append(message);
  71                  }
  72              });
  73          }
  74
  75      }
  76 };