1// Copyright 2014 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#ifndef CHROME_BROWSER_UI_WEBUI_MOJO_WEB_UI_CONTROLLER_H_
6#define CHROME_BROWSER_UI_WEBUI_MOJO_WEB_UI_CONTROLLER_H_
7
8#include <string>
9
10#include "base/memory/scoped_ptr.h"
11#include "content/public/browser/web_ui_controller.h"
12#include "mojo/public/cpp/system/core.h"
13
14class MojoWebUIHandler;
15
16namespace content {
17class WebUIDataSource;
18}
19
20// MojoWebUIController is intended for web ui pages that use mojo. It is
21// expected that subclasses will do two things:
22// . In the constructor invoke AddMojoResourcePath() to register the bindings
23//   files, eg:
24//     AddMojoResourcePath("chrome/browser/ui/webui/omnibox/omnibox.mojom",
25//                         IDR_OMNIBOX_MOJO_JS);
26// . Override CreateUIHandler() to create the implementation of the bindings.
27class MojoWebUIController : public content::WebUIController {
28 public:
29  explicit MojoWebUIController(content::WebUI* contents);
30  virtual ~MojoWebUIController();
31
32  // WebUIController overrides:
33  virtual void RenderViewCreated(
34      content::RenderViewHost* render_view_host) OVERRIDE;
35
36 protected:
37  // Invoke to register mapping between binding file and resource id (IDR_...).
38  void AddMojoResourcePath(const std::string& path, int resource_id);
39
40  // Invoked to create the specific bindings implementation.
41  virtual scoped_ptr<MojoWebUIHandler> CreateUIHandler(
42      mojo::ScopedMessagePipeHandle handle_to_page) = 0;
43
44 private:
45  // Bindings files are registered here.
46  content::WebUIDataSource* mojo_data_source_;
47
48  scoped_ptr<MojoWebUIHandler> ui_handler_;
49
50  DISALLOW_COPY_AND_ASSIGN(MojoWebUIController);
51};
52
53#endif  // CHROME_BROWSER_UI_WEBUI_MOJO_WEB_UI_CONTROLLER_H_
54