// Copyright (c) 2012 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 CONTENT_PUBLIC_BROWSER_WEB_UI_CONTROLLER_FACTORY_H_
#define CONTENT_PUBLIC_BROWSER_WEB_UI_CONTROLLER_FACTORY_H_
#pragma once

#include "content/common/content_export.h"
#include "content/public/browser/web_ui.h"

class GURL;

namespace content {

class BrowserContext;
class WebContents;
class WebUIController;

// Interface for an object which controls which URLs are considered WebUI URLs
// and creates WebUIController instances for given URLs.
class CONTENT_EXPORT WebUIControllerFactory {
 public:
  virtual ~WebUIControllerFactory() {}

  // Returns a WebUIController instance for the given URL, or NULL if the URL
  // doesn't correspond to a WebUI.
  virtual WebUIController* CreateWebUIControllerForURL(
      WebUI* web_ui, const GURL& url) const = 0;

  // Gets the WebUI type for the given URL. This will return kNoWebUI if the
  // corresponding call to CreateWebUIForURL would fail, or something non-NULL
  // if CreateWebUIForURL would succeed.
  virtual WebUI::TypeID GetWebUIType(BrowserContext* browser_context,
                                     const GURL& url) const = 0;

  // Shorthand for the above, but returns a simple yes/no.
  // See also ContentClient::HasWebUIScheme, which only checks the scheme
  // (faster) and can be used to determine security policy.
  virtual bool UseWebUIForURL(BrowserContext* browser_context,
                              const GURL& url) const = 0;

  // Returns true for the subset of WebUIs that actually need WebUI bindings.
  virtual bool UseWebUIBindingsForURL(BrowserContext* browser_context,
                                      const GURL& url) const = 0;

  // Returns true if the given URL can be loaded by Web UI system. This allows
  // URLs with WebUI types (as above) and also URLs that can be loaded by
  // normal tabs such as javascript: URLs or about:hang.
  virtual bool IsURLAcceptableForWebUI(BrowserContext* browser_context,
                                       const GURL& url,
                                       bool data_urls_allowed) const = 0;
};

}  // namespace content

#endif  // CONTENT_PUBLIC_BROWSER_WEB_UI_CONTROLLER_FACTORY_H_