Resolves #181 share levels easily with gist IDs and jsonp

src/js/app/index.js

@@ -202,6 +202,30 @@ var initDemo = function(sandbox) {
     tryLocaleDetect();
   }
 
+  if (params.gist_level_id) {
+    $.ajax({
+      url: 'https://api.github.com/gists/' + params.gist_level_id,
+      type: 'GET',
+      dataType: 'jsonp',
+      success: function(response) {
+        var data = response.data || {};
+        var files = data.files || {};
+        if (!Object.keys(files).length) {
+          console.warn('no files found');
+          return;
+        }
+        var file = files[Object.keys(files)[0]];
+        if (!file.content) {
+          console.warn('file empty');
+        }
+        eventBaton.trigger(
+          'commandSubmitted',
+          'importLevelNow ' + escape(file.content) + '; clear'
+        );
+      }
+    });
+  }
+
   if (params.command) {
     var command = unescape(params.command);
     sandbox.mainVis.customEvents.on('gitEngineReady', function() {

src/js/sandbox/commands.js

@@ -120,6 +120,7 @@ var regexMap = {
   'build level': /^build +level($|\s)/,
   'export tree': /^export +tree$/,
   'importTreeNow': /^importTreeNow($|\s)/,
+  'importLevelNow': /^importLevelNow($|\s)/,
   'import tree': /^import +tree$/,
   'import level': /^import +level$/,
   'undo': /^undo($|\s)/

src/js/sandbox/index.js

@@ -249,7 +249,8 @@ var Sandbox = Backbone.View.extend({
       'export tree': this.exportTree,
       'import tree': this.importTree,
       'importTreeNow': this.importTreeNow,
-      'import level': this.importLevel
+      'import level': this.importLevel,
+      'importLevelNow': this.importLevelNow,
     };
 
     var method = commandMap[command.get('method')];
@@ -270,13 +271,47 @@ var Sandbox = Backbone.View.extend({
     this.mainVis.show();
   },
 
+  importLevelNow: function(command, deferred) {
+    var options = command.get('regexResults') || [];
+    if (options.length < 2) {
+      command.set('error', new Errors.GitError({
+        msg: intl.str('git-error-options')
+      }));
+      command.finishWith(deferred);
+      return;
+    }
+    var string = options.input.replace(/importLevelNow\s+/g, '');
+    var Level = require('../level').Level;
+    try {
+      var levelJSON = JSON.parse(unescape(string));
+      console.log(levelJSON);
+      var whenLevelOpen = Q.defer();
+      this.currentLevel = new Level({
+        level: levelJSON,
+        deferred: whenLevelOpen,
+        command: command
+      });
+      this.hide();
+
+      whenLevelOpen.promise.then(function() {
+        command.finishWith(deferred);
+      });
+    } catch(e) {
+      command.set('error', new Errors.GitError({
+        msg: 'Something went wrong ' + String(e)
+      }));
+    }
+    command.finishWith(deferred);
+  },
+
   importTreeNow: function(command, deferred) {
     var options = command.get('regexResults') || [];
     if (options.length < 2) {
       command.set('error', new Errors.GitError({
         msg: intl.str('git-error-options')
       }));
-    } else {
+      command.finishWith(deferred);
+    }
     var string = options.input.replace(/importTreeNow\s+/g, '');
     try {
       this.mainVis.gitEngine.loadTreeFromString(string);
@@ -285,8 +320,6 @@ var Sandbox = Backbone.View.extend({
         msg: String(e)
       }));
     }
-    }
-
     command.finishWith(deferred);
   },