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// Copyright (c) 2011 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_BROWSER_WEBUI_WEB_UI_FACTORY_H_
#define CONTENT_BROWSER_WEBUI_WEB_UI_FACTORY_H_
#pragma once
#include "base/basictypes.h"
#include "chrome/browser/favicon_service.h"
class WebUI;
class GURL;
class Profile;
class RefCountedMemory;
class TabContents;
// An opaque identifier used to identify a WebUI. This can only be compared to
// kNoWebUI or other WebUI types. See GetWebUIType.
typedef void* WebUITypeID;
class WebUIFactory {
public:
// A special WebUI type that signifies that a given page would not use the
// Web UI system.
static const WebUITypeID kNoWebUI;
// Returns a type identifier indicating what WebUI we would use for the
// given URL. This is useful for comparing the potential WebUIs for two URLs.
// Returns kNoWebUI if the given URL will not use the Web UI system.
static WebUITypeID GetWebUIType(Profile* profile, const GURL& url);
// Returns true if the given URL's scheme would trigger the Web UI system.
// This is a less precise test than UseDONUIForURL, which tells you whether
// that specific URL matches a known one. This one is faster and can be used
// to determine security policy.
static bool HasWebUIScheme(const GURL& url);
// Returns true if the given URL must use the Web UI system.
static bool UseWebUIForURL(Profile* profile, const GURL& url);
// Returns true if the given URL can be loaded by Web UI system. This
// includes URLs that can be loaded by normal tabs as well, such as
// javascript: URLs or about:hang.
static bool IsURLAcceptableForWebUI(Profile* profile, const GURL& url);
// Allocates a new WebUI object for the given URL, and returns it. If the URL
// is not a Web UI URL, then it will return NULL. When non-NULL, ownership of
// the returned pointer is passed to the caller.
static WebUI* CreateWebUIForURL(TabContents* tab_contents, const GURL& url);
// Get the favicon for |page_url| and forward the result to the |request|
// when loaded.
static void GetFaviconForURL(Profile* profile,
FaviconService::GetFaviconRequest* request,
const GURL& page_url);
private:
// Gets the data for the favicon for a WebUI page. Returns NULL if the WebUI
// does not have a favicon.
static RefCountedMemory* GetFaviconResourceBytes(Profile* profile,
const GURL& page_url);
DISALLOW_IMPLICIT_CONSTRUCTORS(WebUIFactory);
};
#endif // CONTENT_BROWSER_WEBUI_WEB_UI_FACTORY_H_
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