koha-tmpl/opac-tmpl/prog/en/js/openlibrary.js

   1 if (typeof KOHA == "undefined" || !KOHA) {
   2     var KOHA = {};
   3 }
   4
   5 /**
   6  * A namespace for OpenLibrary related functions.
   7  */
   8 KOHA.OpenLibrary = {
   9
  10
  11     /**
  12      * Search all:
  13      *    <div title="biblionumber" id="isbn" class="openlibrary-thumbnail"></div>
  14      * or
  15      *    <div title="biblionumber" id="isbn" class="openlibrary-thumbnail-preview"></div>
  16      * and run a search with all collected isbns to Open Library Book Search.
  17      * The result is asynchronously returned by OpenLibrary and catched by
  18      * olCallBack().
  19      */
  20     GetCoverFromIsbn: function() {
  21         var bibkeys = [];
  22         $("[id^=openlibrary-thumbnail]").each(function(i) {
  23             bibkeys.push("ISBN:" + $(this).attr("class")); // id=isbn
  24         });
  25         bibkeys = bibkeys.join(',');
  26         var scriptElement = document.createElement("script");
  27         scriptElement.setAttribute("id", "jsonScript");
  28         scriptElement.setAttribute("src",
  29             "http://openlibrary.org/api/books?bibkeys=" + escape(bibkeys) +
  30             "&callback=KOHA.OpenLibrary.olCallBack&jscmd=data");
  31         scriptElement.setAttribute("type", "text/javascript");
  32         document.documentElement.firstChild.appendChild(scriptElement);
  33     },
  34
  35     /**
  36      * Add cover pages <div
  37      * and link to preview if div id is gbs-thumbnail-preview
  38      */
  39     olCallBack: function(booksInfo) {
  40         for (id in booksInfo) {
  41             var book = booksInfo[id];
  42             var isbn = id.substring(5);
  43             $("[id^=openlibrary-thumbnail]."+isbn).each(function() {
  44                 var is_opacdetail = /openlibrary-thumbnail-preview/.exec($(this).attr("id"));
  45                 var a = document.createElement("a");
  46                 a.href = booksInfo.url;
  47                 if (book.cover) {
  48                     var img = document.createElement("img");
  49                     if (is_opacdetail) {
  50                         img.src = book.cover.medium;
  51                         $(this).append(img);
  52                         $(this).append('<div class="results_summary">' + '<a href="' + book.url + '">Preview</a></div>');
  53                     } else {
  54                         img.src = book.cover.medium;
  55                         img.height = '110';
  56                         $(this).append(img);
  57                     }
  58                 } else {
  59                     var message =  document.createElement("span");
  60                     $(message).attr("class","no-image");
  61                     $(message).html(NO_OL_JACKET);
  62                     $(this).append(message);
  63                 }
  64             });
  65         }
  66     }
  67 };