Merge branch 'Sigill-removefolder'

src/dat/gui/GUI.js

@@ -628,6 +628,29 @@ common.extend(
       return gui;
     },
 
+    /**
+     * Removes a subfolder GUI instance.
+     * {dat.gui.GUI} folder The folder to remove.
+     * @instance
+     */
+    removeFolder: function(folder) {
+      this.__ul.removeChild(folder.domElement.parentElement);
+
+      delete this.__folders[folder.name];
+
+      // Do we have saved appearance data for this folder?
+      if (this.load && // Anything loaded?
+        this.load.folders && // Was my parent a dead-end?
+        this.load.folders[folder.name]) {
+        delete this.load.folders[folder.name];
+      }
+
+      const _this = this;
+      common.defer(function() {
+        _this.onResize();
+      });
+    },
+
     /**
      * Opens the GUI.
      */

tests/index.html

@@ -1187,6 +1187,20 @@ console.log(c2.__checkbox.getAttribute('checked'));
 
     });
 
+    test('removeFolder', function() {
+
+      var gui = new GUI();
+
+      var f = gui.addFolder('Temporary folder');
+
+      ok($.contains(gui.domElement, f.domElement), "Now you see it");
+      gui.removeFolder(f);
+
+      ok(!$.contains(gui.domElement, f.domElement), "Now you don't.");
+
+      gui.destroy();
+
+    });
 
     test('min, max & step', function() {