files/module.js

   1 // File Tree Viewer
   2 // Author: Dongsheng Cai <dongsheng@moodle.com>
   3 M.core_filetree = {
   4     y3: null,
   5     api: M.cfg.wwwroot+'/files/filebrowser_ajax.php',
   6     request: function(url, node, cb) {
   7         var api = this.api + '?action=getfiletree';
   8         var params = [];
   9         params['contextid'] = this.get_param(url, 'contextid', -1);
  10         params['component'] = this.get_param(url, 'component', null);
  11         params['filearea'] = this.get_param(url, 'filearea', null);
  12         params['itemid'] = this.get_param(url, 'itemid', -1);
  13         params['filepath'] = this.get_param(url, 'filepath', null);
  14         params['filename'] = this.get_param(url, 'filename', null);
  15         var scope = this;
  16         params['sesskey']=M.cfg.sesskey;
  17         var cfg = {
  18             method: 'POST',
  19             on: {
  20                 complete: function(id,o,p) {
  21                     try {
  22                         var data = this.y3.JSON.parse(o.responseText);
  23                     } catch(e) {
  24                         alert(e.toString());
  25                         return;
  26                     }
  27                     if (data && data.length==0) {
  28                         node.isLeaf = true;
  29                     } else {
  30                         for (i in data) {
  31                             var mynode = {
  32                                 label: data[i].filename,
  33                                 href: data[i].url
  34                             };
  35                             var tmp = new YAHOO.widget.TextNode(mynode, node, false);
  36                             if (data[i].isdir) {
  37                                 tmp.isLeaf = false;
  38                             } else {
  39                                 tmp.isLeaf = true;
  40                                 tmp.target = '_blank';
  41                             }
  42                         }
  43                     }
  44                     cb();
  45                 }
  46             },
  47             arguments: {
  48                 scope: scope
  49             },
  50             headers: {
  51                 'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8',
  52             },
  53             data: build_querystring(params),
  54             context: this
  55         };
  56         this.y3.io(api, cfg);
  57     },
  58     init : function(Y){
  59         var tree = new YAHOO.widget.TreeView('course-file-tree-view');
  60         tree.setDynamicLoad(this.dynload);
  61         tree.subscribe("clickEvent", this.onclick);
  62         var root = tree.getRoot();
  63         var children = root.children;
  64         for (i in children) {
  65             if (children[i].className == 'file-tree-folder') {
  66                 children[i].isLeaf = false;
  67             } else {
  68                 children[i].isLeaf = true;
  69             }
  70         }
  71         tree.render();
  72         this.y3 = Y;
  73     },
  74     dynload: function(node, oncompletecb) {
  75         M.core_filetree.request(node.href, node, oncompletecb);
  76     },
  77     onclick: function(e) {
  78         YAHOO.util.Event.preventDefault(e);
  79     },
  80     get_param: function(url, name, val) {
  81         name = name.replace(/[\[]/,"\\\[").replace(/[\]]/,"\\\]");
  82         var regexS = "[\\?&]"+name+"=([^&#]*)";
  83         var regex = new RegExp( regexS );
  84         var results = regex.exec(url);
  85         if( results == null ) {
  86             return val;
  87         } else {
  88             return unescape(results[1]);
  89         }
  90     }
  91 }