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 tmp = new YAHOO.widget.HTMLNode('<div>'+data[i].icon+'&nbsp;<a href="'+data[i].url+'">'+data[i].filename+'</a></div>', node, false);
  32                             if (data[i].isdir) {
  33                                 tmp.isLeaf = false;
  34                                 tmp.isDir = true;
  35                             } else {
  36                                 tmp.isLeaf = true;
  37                                 tmp.isFile = true;
  38                             }
  39                         }
  40                     }
  41                     cb();
  42                 }
  43             },
  44             arguments: {
  45                 scope: scope
  46             },
  47             headers: {
  48                 'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8'
  49             },
  50             data: build_querystring(params),
  51             context: this
  52         };
  53         this.y3.io(api, cfg);
  54     },
  55     init : function(Y){
  56         var tree = new YAHOO.widget.TreeView('course-file-tree-view');
  57         tree.setDynamicLoad(this.dynload);
  58         tree.subscribe("clickEvent", this.onclick);
  59         var root = tree.getRoot();
  60         var children = root.children;
  61         for (i in children) {
  62             if (children[i].className == 'file-tree-folder') {
  63                 children[i].isLeaf = false;
  64                 children[i].isDir = true;
  65             } else {
  66                 children[i].isLeaf = true;
  67                 children[i].isFile = true;
  68             }
  69         }
  70         tree.render();
  71         this.y3 = Y;
  72     },
  73     dynload: function(node, oncompletecb) {
  74         var tmp = document.createElement('p');
  75         tmp.innerHTML = node.html;
  76         var links = tmp.getElementsByTagName('a');
  77         var link = links[0].href;
  78         M.core_filetree.request(link, node, oncompletecb);
  79     },
  80     onclick: function(e) {
  81         YAHOO.util.Event.preventDefault(e);
  82         if (e.node.isFile) {
  83             var tmp = document.createElement('p');
  84             tmp.innerHTML = e.node.html;
  85             var links = tmp.getElementsByTagName('a');
  86             var link = links[0].href;
  87             window.location = link;
  88         }
  89     },
  90     get_param: function(url, name, val) {
  91         name = name.replace(/[\[]/,"\\\[").replace(/[\]]/,"\\\]");
  92         var regexS = "[\\?&]"+name+"=([^&#]*)";
  93         var regex = new RegExp( regexS );
  94         var results = regex.exec(url);
  95         if( results == null ) {
  96             return val;
  97         } else {
  98             return unescape(results[1]);
  99         }
 100     }
 101 };