koha-tmpl/opac-tmpl/prog/en/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      * and run a search with all collected isbns to Google Book Search.
  15      * The result is asynchronously returned by Google and catched by
  16      * gbsCallBack().
  17      */
  18     GetCoverFromIsbn: function() {
  19         var bibkeys = [];
  20         $("div [id^=gbs-thumbnail]").each(function(i) {
  21             bibkeys.push($(this).attr("class")); // id=isbn
  22         });
  23         bibkeys = bibkeys.join(',');
  24         var scriptElement = document.createElement("script");
  25         scriptElement.setAttribute("id", "jsonScript");
  26         scriptElement.setAttribute("src",
  27             "http://books.google.com/books?bibkeys=" + escape(bibkeys) +
  28             "&jscmd=viewapi&callback=KOHA.Google.gbsCallBack");
  29         scriptElement.setAttribute("type", "text/javascript");
  30         document.documentElement.firstChild.appendChild(scriptElement);
  31
  32     },
  33
  34     /**
  35      * Add cover pages and links to Google detail in <div
  36      */
  37     gbsCallBack: function(booksInfo) {
  38         for (id in booksInfo) {
  39             var book = booksInfo[id];
  40             $("."+book.bib_key).each(function() {
  41                 var a = document.createElement("a");
  42                 a.href = book.info_url;
  43                                 if (typeof(book.thumbnail_url) != "undefined") {
  44                         var img = document.createElement("img");
  45                         img.src = book.thumbnail_url;
  46                                         $(this).append(img);
  47                     $(this).append(
  48                         '<div style="margin-bottom:5px; margin-top:-5px;font-size:9px">' +
  49                         '<a href="' +
  50                         book.info_url +
  51                         '">Source Google</a></div>'
  52                         );
  53                                 } else {
  54                                         var message = document.createElement("span");
  55                                         $(message).attr("class","no-image");
  56                                         $(message).html(NO_GOOGLE_JACKET);
  57                                         $(this).append(message);
  58                                 }
  59             });
  60         }
  61     }
  62 };