Tilorswift levels will be loaded asynchronously now

js/FileLoader.js

@@ -4,7 +4,8 @@ export default class FileLoader
     {
         this.filename = filename;
         this.content = '';
-        this.loadContent();
+
+        this.onLoad = () => {};
     }
 
     getContent()
@@ -19,10 +20,11 @@ export default class FileLoader
         request.onreadystatechange = () => {
             if (request.status === 200 && request.readyState === 4) {
                 this.content = request.responseText;
+                this.onLoad(this.content);
             }
         };
 
         request.open('GET', this.filename, false);
         request.send();
     }
-}
+}

js/Level.js

@@ -74,15 +74,17 @@ export default class Level
         this.gravity = gravity;
     }
 
-    static createFromFile(filename)
+    static createFromFile(filename, callback = () => {})
     {
         let loader = new FileLoader(filename);
-        let levelData = JSON.parse(loader.getContent());
-        let terrain = Terrain.createFromJson(levelData);
-        let level =  new Level(terrain);
-        level.setGravity(levelData.gravity);
+        loader.onLoad = (data) => {
+            const json = JSON.parse(data);
+            const level =  new Level(Terrain.createFromJson(json));
+            level.setGravity(json.gravity);
 
-        return level;
+            callback(level);
+        }
+        loader.loadContent();
     }
 
     static createFromJson(json)

js/ui/LoadLevelDialog.js

@@ -36,4 +36,9 @@ export class LoadLevelDialog extends Dialog
             }
         );
     }
+
+    openFileBrowser()
+    {
+        this.fileInput.click();
+    }
 }