| // Copyright 2016 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| [DartPackage="mojo_services"] |
| module mojo.ui; |
| |
| // A view tree token is an opaque transferable reference to a view tree. |
| // |
| // The ViewManager provides each view tree with a unique view tree token when |
| // it is registered. The token can subsequently be passed to other |
| // applications and used as a way to refer to the tree. |
| // |
| // View tree tokens should be kept secret and should only be shared with |
| // trusted services. |
| // |
| // TODO(jeffbrown): This implementation is a temporary placeholder until |
| // we extend Mojo to provide a way to create tokens which cannot be forged. |
| struct ViewTreeToken { |
| uint32 value; |
| }; |
