koha-tmpl/intranet-tmpl/prog/js/localcovers.js

   1 /* global _ */
   2
   3 if (typeof KOHA == "undefined" || !KOHA) {
   4     var KOHA = {};
   5 }
   6
   7 /**
   8  * A namespace for local cover related functions.
   9  */
  10 KOHA.LocalCover = {
  11
  12
  13     /**
  14      * Search all:
  15      *    <div title="biblionumber" id="isbn" class="openlibrary-thumbnail"></div>
  16      * or
  17      *    <div title="biblionumber" id="isbn" class="openlibrary-thumbnail-preview"></div>
  18      * and run a search with all collected isbns to Open Library Book Search.
  19      * The result is asynchronously returned by OpenLibrary and catched by
  20      * olCallBack().
  21      */
  22     GetCoverFromBibnumber: function(uselink) {
  23         var mydiv = $("#local-thumbnail-preview");
  24         var biblionumber = mydiv.data("biblionumber");
  25         var img = document.createElement("img");
  26         img.src = "/cgi-bin/koha/catalogue/image.pl?thumbnail=1&biblionumber=" + biblionumber;
  27         img.onload = function() {
  28             // image dimensions can't be known until image has loaded
  29             if ( (img.complete != null) && (!img.complete) ) {
  30                 mydiv.remove();
  31             }
  32         };
  33         if (uselink) {
  34             var a = $("<a />").attr('href', '/cgi-bin/koha/catalogue/imageviewer.pl?biblionumber=' + $(mydiv).attr("class"));
  35             $(a).append(img);
  36             mydiv.append(a);
  37         } else {
  38             mydiv.append(img);
  39         }
  40     },
  41     LoadResultsCovers: function(){
  42         $("div [id^=local-thumbnail]").each(function(i) {
  43             var mydiv = this;
  44             var message = document.createElement("span");
  45             $(message).attr("class","no-image thumbnail");
  46             $(message).html( _("No cover image available") );
  47             $(mydiv).append(message);
  48             var img = $("<img />");
  49             img.attr('src','/cgi-bin/koha/catalogue/image.pl?thumbnail=1&biblionumber=' + $(mydiv).attr("class"))
  50                 .addClass("thumbnail")
  51                 .load(function () {
  52                     if (!this.complete || typeof this.naturalWidth == "undefined" || this.naturalWidth <= 1) {
  53                         //IE HACK
  54                         try {
  55                             var otherCovers = $(mydiv).closest('td').find('img');
  56                             var nbCovers = otherCovers.length;
  57                             if(nbCovers > 0){
  58                                 var badCovers = 0;
  59                                 otherCovers.each(function(){
  60                                     if(this.naturalWidth <= 1){
  61                                         $(this).parent().remove();
  62                                         badCovers++;
  63                                     }
  64                                 });
  65                                 if(badCovers < nbCovers){
  66                                     $(mydiv).parent().remove();
  67                                 }
  68                             }
  69                         }
  70                         catch(err){
  71                         }
  72                     } else {
  73                         $(mydiv).append(img);
  74                         $(mydiv).children('.no-image').remove();
  75                     }
  76                 });
  77         });
  78     }
  79 };