share/static/js/cascaded.js

   1 function filter_cascade_by_id (id, vals, is_hierarchical) {
   2     var select = document.getElementById(id);
   3     var complete_select = document.getElementById(id + "-Complete" );
   4     return filter_cascade(select, complete_select, vals, is_hierarchical);
   5 }
   6
   7 function filter_cascade (select, complete_select, vals, is_hierarchical) {
   8     if ( !( vals instanceof Array ) ) {
   9         vals = [vals];
  10     }
  11
  12     if (!select) { return };
  13     var i;
  14     var children = select.childNodes;
  15
  16     if ( complete_select ) {
  17         while (select.hasChildNodes()){
  18             select.removeChild(select.firstChild);
  19         }
  20
  21         var complete_children = complete_select.childNodes;
  22
  23         var cloned_labels = {};
  24         var cloned_empty_label;
  25         for ( var j = 0; j < vals.length; j++ ) {
  26             var val = vals[j];
  27             if ( val == '' && is_hierarchical ) {
  28                 // no category, and the category is from a hierchical cf;
  29                 // leave this set of options empty
  30             } else if ( val == '' ) {
  31                 // no category, let's clone all node
  32                 for (i = 0; i < complete_children.length; i++) {
  33                     if ( complete_children[i].cloneNode ) {
  34                         var new_option = complete_children[i].cloneNode(true);
  35                         select.appendChild(new_option);
  36                     }
  37                 }
  38                 break;
  39             }
  40             else {
  41                 var labels_to_clone = {};
  42                 for (i = 0; i < complete_children.length; i++) {
  43                     if (!complete_children[i].label ||
  44                           (complete_children[i].hasAttribute &&
  45                                 !complete_children[i].hasAttribute('label') ) ) {
  46                         if ( cloned_empty_label ) {
  47                             continue;
  48                         }
  49                     }
  50                     else if ( complete_children[i].label == val ) {
  51                         if ( cloned_labels[complete_children[i].label] ) {
  52                             continue;
  53                         }
  54                         labels_to_clone[complete_children[i].label] = true;
  55                     }
  56                     else {
  57                         continue;
  58                     }
  59
  60                     if ( complete_children[i].cloneNode ) {
  61                         var new_option = complete_children[i].cloneNode(true);
  62                         select.appendChild(new_option);
  63                     }
  64                 }
  65
  66                 if ( !cloned_empty_label )
  67                     cloned_empty_label = true;
  68
  69                 for ( label in labels_to_clone ) {
  70                     if ( !cloned_labels[label] )
  71                         cloned_labels[label] = true;
  72                 }
  73             }
  74         }
  75     }
  76     else {
  77 // for back compatibility
  78         for (i = 0; i < children.length; i++) {
  79             if (!children[i].label) { continue };
  80             if ( val == '' && is_hierarchical ) {
  81                 hide(children[i]);
  82                 continue;
  83             }
  84             if ( val == '' || children[i].label.substr(0, val.length) == val) {
  85                 show(children[i]);
  86                 continue;
  87             }
  88             hide(children[i]);
  89         }
  90     }
  91 }