Open-ILS/web/opac/skin/default/js/cn_browse.js

   1 var cnBrowseCurrent;
   2 var cnBrowseTopCn;
   3 var cnBrowseTopId;
   4 var cnBrowseBottomCn;
   5 var cnBrowseBottomId;
   6 var cnBrowseDepth;
   7 var cnBrowseCache = {};
   8 var cnBrowseShowNext = false;
   9 var cnBrowseShowPrev = false;
  10 var MAX_CN = 9;
  11
  12 function cnBrowseGo(cn, depth) {
  13         if(depth == null) depth = getDepth();
  14         cnBrowseDepth = depth;
  15         cnBrowseCurrent = cn;
  16         var req = new Request( FETCH_CNBROWSE_TARGET,
  17                 'org_unit', getLocation(),
  18                 'depth', cnBrowseDepth,
  19                 'label', cnBrowseCurrent,
  20                 'page_size', MAX_CN );
  21         req.callback( cnBrowseDraw );
  22         req.send();
  23 }
  24
  25 function cnBrowseNext() {
  26         cnBrowseShowNext = true;
  27         if( cnBrowseCache.next )  /* if we have it, show it */
  28                 cnBrowseClearNext(cnBrowseCache.next);
  29 }
  30
  31 function cnBrowsePrev() {
  32         cnBrowseShowPrev = true;
  33         if( cnBrowseCache.prev )
  34                 cnBrowseClearPrev(cnBrowseCache.prev);
  35 }
  36
  37 function cnBrowseGrabNext() {
  38         var req = new Request( FETCH_CNBROWSE_NEXT,
  39                 'org_unit', getLocation(),
  40                 'depth', cnBrowseDepth,
  41                 'label', cnBrowseBottomCn,
  42                 'boundry_id', cnBrowseBottomId,
  43                 'page_size', MAX_CN );
  44         req.callback( cnBrowseCacheMe );
  45         req.request.next = true;
  46         req.send();
  47 }
  48
  49
  50 function cnBrowseGrabPrev() {
  51         var req = new Request( FETCH_CNBROWSE_PREV,
  52                 'org_unit', getLocation(),
  53                 'depth', cnBrowseDepth,
  54                 'label', cnBrowseTopCn,
  55                 'boundry_id', cnBrowseTopId,
  56                 'page_size', MAX_CN );
  57         req.callback( cnBrowseCacheMe );
  58         req.request.prev = true;
  59         req.send();
  60 }
  61
  62 function cnBrowseClearNext(list) {
  63         cnBrowseCache.next = null;
  64         cnBrowseShowNext = false;
  65         _cnBrowseDraw(list);
  66 }
  67
  68 function cnBrowseClearPrev(list) {
  69         cnBrowseCache.prev = null;
  70         cnBrowseShowPrev = false;
  71         _cnBrowseDraw(list);
  72 }
  73
  74 /* cache next and previous calls unless they are
  75 needed immediately */
  76 function cnBrowseCacheMe(r) {
  77         var list = r.getResultObject();
  78         if( r.next ) {
  79                 cnBrowseCache.next = list;
  80                 if( cnBrowseShowNext ) {
  81                         cnBrowseClearNext(list);
  82                 }
  83
  84         } else if( r.prev ) {
  85                 cnBrowseCache.prev = list;
  86                 if( cnBrowseShowPrev )  {
  87                         cnBrowseClearPrev(list);
  88                 }
  89         }
  90 }
  91
  92
  93 function cnBrowseDraw( r ) {
  94         var list = r.getResultObject();
  95         _cnBrowseDraw(list);
  96 }
  97
  98
  99 var cnTbody;
 100 var cnRowT;
 101 var cnTdT;
 102 function _cnBrowseDraw( list ) {
 103
 104         if(!cnTbody) {
 105                 cnTbody = $('cn_tbody');
 106                 cnRowT = $('cn_browse_row');
 107                 cnTdT = cnRowT.removeChild($('cn_browse_td'));
 108                 cnTbody.removeChild(cnRowT);
 109         }
 110         removeChildren(cnTbody);
 111
 112         var counter = 1;
 113         var currentRow = cnRowT.cloneNode(true);
 114         cnTbody.appendChild(currentRow);
 115
 116         for( var idx in list ) {
 117
 118
 119                 var currentTd = cnTdT.cloneNode(true);
 120                 currentRow.appendChild(currentTd);
 121
 122                 var td = cnTdT.cloneNode(true);
 123                 var label       = list[idx][0];
 124                 var lib         = list[idx][1];
 125                 var record      = list[idx][2];
 126                 var id          = list[idx][3];
 127
 128                 /*
 129                 if( label != cnBrowseCurrent ) {
 130                         removeCSSClass( td, 'cn_browse_home_cn' );
 131                 }
 132                 */
 133
 134                 if( idx == 0 ) { cnBrowseTopCn = label; cnBrowseTopId = id; }
 135                 cnBrowseBottomCn = label;
 136                 cnBrowseBottomId = id;
 137
 138                 var cn_td                       = $n(currentTd, 'cn_browse_cn');
 139                 var lib_td                      = $n(currentTd, 'cn_browse_lib');
 140                 var title_td            = $n(currentTd, 'cn_browse_title');
 141                 var author_td           = $n(currentTd, 'cn_browse_author');
 142                 var pic_td                      = $n(currentTd, 'cn_browse_pic');
 143
 144                 cn_td.appendChild(text(label));
 145                 lib_td.appendChild(text(findOrgUnit(lib).name()));
 146
 147                 var req = new Request( FETCH_RMODS, record );
 148                 req.request.title_td            = title_td;
 149                 req.request.author_td   = author_td;
 150                 req.request.pic_td              = pic_td;
 151                 req.callback( cnBrowseDrawTitle );
 152                 req.send();
 153
 154
 155                 if( counter++ % 3 == 0 ) {
 156                         counter = 1;
 157                         currentRow = cnRowT.cloneNode(true);
 158                         cnTbody.appendChild(currentRow);
 159                 }
 160         }
 161         cnBrowseGrabNext();
 162         cnBrowseGrabPrev();
 163 }
 164
 165 function cnBrowseDrawTitle(r) {
 166         var mods = r.getResultObject();
 167         buildTitleDetailLink(mods, r.title_td);
 168         buildSearchLink(STYPE_AUTHOR, mods.author(), r.author_td);
 169         r.pic_td.setAttribute("src", buildISBNSrc(cleanISBN(mods.isbn())));
 170
 171         var args = {};
 172         args.page = RDETAIL;
 173         args[PARAM_OFFSET] = 0;
 174         args[PARAM_RID] = mods.doc_id();
 175         args[PARAM_MRID] = 0;
 176         r.pic_td.parentNode.setAttribute("href", buildOPACLink(args));
 177 }
 178