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         $("div [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");
  31         scriptElement.setAttribute("type", "text/javascript");
  32         document.documentElement.firstChild.appendChild(scriptElement);
  33
  34     },
  35
  36     /**
  37      * Add cover pages <div
  38      * and link to preview if div id is gbs-thumbnail-preview
  39      */
  40     olCallBack: function(booksInfo) {
  41        for (id in booksInfo) {
  42           var book = booksInfo[id];
  43           var isbn = book.bib_key.substring(5);
  44
  45           $("."+isbn).each(function() {
  46               var a = document.createElement("a");
  47               a.href = book.info_url;
  48                                       if (typeof(book.thumbnail_url) != "undefined") {
  49                         var img = document.createElement("img");
  50                         img.src = book.thumbnail_url;
  51                                                 $(this).append(img);
  52                   var re = /^openlibrary-thumbnail-preview/;
  53                   if ( re.exec($(this).attr("id")) ) {
  54                       $(this).append(
  55                         '<div style="margin-bottom:5px; margin-top:-5px;font-size:9px">' +
  56                         '<a href="' +
  57                         book.info_url +
  58                         '">Preview</a></div>'
  59                       );
  60                   }
  61                                 } else {
  62                                         var message = document.createElement("span");
  63                                             $(message).attr("class","no-image");
  64                                             $(message).html(NO_OL_JACKET);
  65                                             $(this).append(message);
  66                                     }
  67         });
  68       }
  69     }
  70 };