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// Copyright 2014 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.
#ifndef CHROME_BROWSER_UI_WEBUI_MOJO_WEB_UI_CONTROLLER_H_
#define CHROME_BROWSER_UI_WEBUI_MOJO_WEB_UI_CONTROLLER_H_
#include <string>
#include "base/memory/scoped_ptr.h"
#include "base/memory/weak_ptr.h"
#include "chrome/browser/ui/webui/mojo_web_ui_handler.h"
#include "content/public/browser/render_frame_host.h"
#include "content/public/browser/render_view_host.h"
#include "content/public/browser/web_ui_controller.h"
#include "content/public/common/service_registry.h"
#include "mojo/public/cpp/system/core.h"
class MojoWebUIHandler;
namespace content {
class WebUIDataSource;
}
class MojoWebUIControllerBase : public content::WebUIController {
public:
explicit MojoWebUIControllerBase(content::WebUI* contents);
virtual ~MojoWebUIControllerBase();
// WebUIController overrides:
virtual void RenderViewCreated(
content::RenderViewHost* render_view_host) OVERRIDE;
protected:
// Invoke to register mapping between binding file and resource id (IDR_...).
void AddMojoResourcePath(const std::string& path, int resource_id);
private:
// Bindings files are registered here.
content::WebUIDataSource* mojo_data_source_;
DISALLOW_COPY_AND_ASSIGN(MojoWebUIControllerBase);
};
// MojoWebUIController is intended for web ui pages that use mojo. It is
// expected that subclasses will do two things:
// . In the constructor invoke AddMojoResourcePath() to register the bindings
// files, eg:
// AddMojoResourcePath("chrome/browser/ui/webui/omnibox/omnibox.mojom",
// IDR_OMNIBOX_MOJO_JS);
// . Override CreateUIHandler() to create the implementation of the bindings.
template <typename Interface>
class MojoWebUIController : public MojoWebUIControllerBase {
public:
explicit MojoWebUIController(content::WebUI* contents)
: MojoWebUIControllerBase(contents), weak_factory_(this) {}
virtual ~MojoWebUIController() {}
virtual void RenderViewCreated(
content::RenderViewHost* render_view_host) OVERRIDE {
MojoWebUIControllerBase::RenderViewCreated(render_view_host);
render_view_host->GetMainFrame()->GetServiceRegistry()->
AddService<Interface>(
base::Bind(&MojoWebUIController::CreateAndStoreUIHandler,
weak_factory_.GetWeakPtr()));
}
protected:
// Invoked to create the specific bindings implementation.
virtual scoped_ptr<MojoWebUIHandler> CreateUIHandler(
mojo::InterfaceRequest<Interface> request) = 0;
private:
void CreateAndStoreUIHandler(mojo::InterfaceRequest<Interface> request) {
ui_handler_ = CreateUIHandler(request.Pass());
}
scoped_ptr<MojoWebUIHandler> ui_handler_;
base::WeakPtrFactory<MojoWebUIController> weak_factory_;
DISALLOW_COPY_AND_ASSIGN(MojoWebUIController);
};
#endif // CHROME_BROWSER_UI_WEBUI_MOJO_WEB_UI_CONTROLLER_H_
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