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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 <memory>
#include <string>
#include "base/macros.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 "mojo/public/cpp/system/core.h"
#include "services/service_manager/public/cpp/binder_registry.h"
class MojoWebUIControllerBase : public content::WebUIController {
public:
explicit MojoWebUIControllerBase(content::WebUI* contents);
~MojoWebUIControllerBase() override;
// WebUIController overrides:
void RenderFrameCreated(content::RenderFrameHost* render_frame_host) override;
private:
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 BindUIHandler() to create and bind the implementation of the
// bindings.
template <typename Interface>
class MojoWebUIController : public MojoWebUIControllerBase {
public:
explicit MojoWebUIController(content::WebUI* contents)
: MojoWebUIControllerBase(contents), weak_factory_(this) {}
~MojoWebUIController() override {}
void RenderFrameCreated(
content::RenderFrameHost* render_frame_host) override {
MojoWebUIControllerBase::RenderFrameCreated(render_frame_host);
// Right now, this is expected to be called only for main frames.
DCHECK(!render_frame_host->GetParent());
render_frame_host->GetInterfaceRegistry()->
AddInterface<Interface>(
base::Bind(&MojoWebUIController::BindUIHandler,
weak_factory_.GetWeakPtr()));
}
protected:
// Invoked to create the specific bindings implementation.
virtual void BindUIHandler(mojo::InterfaceRequest<Interface> request) = 0;
private:
base::WeakPtrFactory<MojoWebUIController> weak_factory_;
DISALLOW_COPY_AND_ASSIGN(MojoWebUIController);
};
#endif // CHROME_BROWSER_UI_WEBUI_MOJO_WEB_UI_CONTROLLER_H_
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