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// Copyright (c) 2010 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_DOM_UI_DOM_UI_FACTORY_H_
#define CHROME_BROWSER_DOM_UI_DOM_UI_FACTORY_H_
#pragma once
#include "chrome/browser/favicon_service.h"
class DOMUI;
class GURL;
class Profile;
class RefCountedMemory;
class TabContents;
// An opaque identifier used to identify a DOMUI. This can only be compared to
// kNoDOMUI or other DOMUI types. See GetDOMUIType.
typedef void* DOMUITypeID;
class DOMUIFactory {
public:
// A special DOMUI type that signifies that a given page would not use the
// DOM UI system.
static const DOMUITypeID kNoDOMUI;
// Returns a type identifier indicating what DOMUI we would use for the
// given URL. This is useful for comparing the potential DOMUIs for two URLs.
// Returns kNoDOMUI if the given URL will not use the DOM UI system.
static DOMUITypeID GetDOMUIType(Profile* profile, const GURL& url);
// Returns true if the given URL's scheme would trigger the DOM 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 HasDOMUIScheme(const GURL& url);
// Returns true if the given URL must use the DOM UI system.
static bool UseDOMUIForURL(Profile* profile, const GURL& url);
// Returns true if the given URL can be loaded by DOM UI system. This
// includes URLs that can be loaded by normal tabs as well, such as
// javascript: URLs or about:hang.
static bool IsURLAcceptableForDOMUI(Profile* profile, const GURL& url);
// Allocates a new DOMUI object for the given URL, and returns it. If the URL
// is not a DOM UI URL, then it will return NULL. When non-NULL, ownership of
// the returned pointer is passed to the caller.
static DOMUI* CreateDOMUIForURL(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:
// Class is for scoping only.
DOMUIFactory() {}
// Gets the data for the favicon for a DOMUI page. Returns NULL if the DOMUI
// does not have a favicon.
static RefCountedMemory* GetFaviconResourceBytes(Profile* profile,
const GURL& page_url);
};
#endif // CHROME_BROWSER_DOM_UI_DOM_UI_FACTORY_H_
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