Sofware carpentry tags for greg wilson

custom.example.js

@@ -32,6 +32,18 @@ $([IPython.events]).on('app_initialized.NotebookApp', function(){
     //     // do stuff
     // })
 
+    // software carpentry tags example.
+    /*  require(['custom/swc/main'],function(m){
+     *
+     *       // param1 : Name of the preset in the dropdown selector
+     *       // param2 : namespace to use in metadata
+     *       // param3 : list of tags name to use both in UI in front of checkboxes and in metadata
+     *
+     *       m.new_tag_set('Software Carpentry Tags', 'swc' ,['instructor','learner','exercise'])
+     *
+     *       console.log('Sofware carpentry tags extension loaded corectly')
+     *  })
+     */
 
 
 });

swc/main.js

@@ -0,0 +1,37 @@
+define(function() {
+    var CellToolbar = IPython.CellToolbar;
+
+    // generate a checkbox for <tagname> bound to 
+    // cell.metadata.<namespace>.<tagname>
+    // and return the key to register for it a a preset.
+    var tagg = function (namespace, tagname){
+        var local = CellToolbar.utils.checkbox_ui_generator(tagname,
+             function(cell, value){
+                 if (cell.metadata[namespace] == undefined){cell.metadata[namespace] = {}}
+                 cell.metadata[namespace][tagname] = value
+                 },
+             function(cell){ var ns = cell.metadata[namespace];
+                 return (ns == undefined)? undefined: ns[tagname]
+                 }
+        );
+        var cname = namespace+'_'+tagname
+        CellToolbar.register_callback(namespace+'_'+tagname,local);
+        return cname
+    }
+
+    // generate a preset with name <UIname>
+    // that register a bunch of tags [<tagsname>,...]s
+    // bound to cell.metadata.<namespace>.<tagname> = [Bool|unset]
+    var new_tag_set = function(UIname, namespace, tagsnames){
+        var taglistname = []
+        for( var i in tagsnames){
+            taglistname.push(tagg(namespace, tagsnames[i]))
+        }
+        CellToolbar.register_preset(UIname, taglistname)
+    }
+
+    // 
+    //taggl('Software Carpentry Tags', 'swc' ,['instructor','learner','exercise'])
+    //
+    return {new_tag_set:new_tag_set}
+})