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// Copyright (c) 2009 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.
#include "chrome/browser/dom_ui/dom_ui_factory.h"
#include "chrome/browser/chrome_thread.h"
#include "chrome/browser/dom_ui/bookmarks_ui.h"
#include "chrome/browser/dom_ui/downloads_ui.h"
#include "chrome/browser/dom_ui/devtools_ui.h"
#include "chrome/browser/dom_ui/history_ui.h"
#include "chrome/browser/dom_ui/filebrowse_ui.h"
#include "chrome/browser/dom_ui/html_dialog_ui.h"
#include "chrome/browser/dom_ui/mediaplayer_ui.h"
#include "chrome/browser/dom_ui/net_internals_ui.h"
#include "chrome/browser/dom_ui/new_tab_ui.h"
#include "chrome/browser/dom_ui/print_ui.h"
#include "chrome/browser/extensions/extension_dom_ui.h"
#include "chrome/browser/extensions/extensions_service.h"
#include "chrome/browser/extensions/extensions_ui.h"
#include "chrome/browser/profile.h"
#include "chrome/browser/tab_contents/tab_contents.h"
#include "chrome/common/url_constants.h"
#include "googleurl/src/gurl.h"
const DOMUITypeID DOMUIFactory::kNoDOMUI = NULL;
// A function for creating a new DOMUI. The caller owns the return value, which
// may be NULL (for example, if the URL refers to an non-existent extension).
typedef DOMUI* (*DOMUIFactoryFunction)(TabContents* tab_contents,
const GURL& url);
// Template for defining DOMUIFactoryFunction.
template<class T>
DOMUI* NewDOMUI(TabContents* contents, const GURL& url) {
return new T(contents);
}
// Special case for extensions.
template<>
DOMUI* NewDOMUI<ExtensionDOMUI>(TabContents* contents, const GURL& url) {
// Don't use a DOMUI for non-existent extensions or for incognito tabs. The
// latter restriction is because we require extensions to run within a single
// process.
ExtensionsService* service = contents->profile()->GetExtensionsService();
bool valid_extension =
(service && service->GetExtensionById(url.host(), false));
if (valid_extension && !contents->profile()->IsOffTheRecord())
return new ExtensionDOMUI(contents);
return NULL;
}
// Returns a function that can be used to create the right type of DOMUI for a
// tab, based on its URL. Returns NULL if the URL doesn't have DOMUI associated
// with it. Even if the factory function is valid, it may yield a NULL DOMUI
// when invoked for a particular tab - see NewDOMUI<ExtensionDOMUI>.
static DOMUIFactoryFunction GetDOMUIFactoryFunction(const GURL& url) {
// Currently, any gears: URL means an HTML dialog.
if (url.SchemeIs(chrome::kGearsScheme))
return &NewDOMUI<HtmlDialogUI>;
if (url.SchemeIs(chrome::kExtensionScheme))
return &NewDOMUI<ExtensionDOMUI>;
// TODO(mhm) Make sure this ifdef is removed once print is complete.
#if !defined(GOOGLE_CHROME_BUILD)
if (url.SchemeIs(chrome::kPrintScheme))
return &NewDOMUI<PrintUI>;
#endif
// This will get called a lot to check all URLs, so do a quick check of other
// schemes (gears was handled above) to filter out most URLs.
if (!url.SchemeIs(chrome::kChromeInternalScheme) &&
!url.SchemeIs(chrome::kChromeUIScheme))
return NULL;
if (url.host() == chrome::kSyncResourcesHost)
return &NewDOMUI<HtmlDialogUI>;
// Special case the new tab page. In older versions of Chrome, the new tab
// page was hosted at chrome-internal:<blah>. This might be in people's saved
// sessions or bookmarks, so we say any URL with that scheme triggers the new
// tab page.
if (url.host() == chrome::kChromeUINewTabHost ||
url.SchemeIs(chrome::kChromeInternalScheme))
return &NewDOMUI<NewTabUI>;
// We must compare hosts only since some of the DOM UIs append extra stuff
// after the host name.
if (url.host() == chrome::kChromeUIBookmarksHost)
return &NewDOMUI<BookmarksUI>;
if (url.host() == chrome::kChromeUIDevToolsHost)
return &NewDOMUI<DevToolsUI>;
if (url.host() == chrome::kChromeUIDownloadsHost)
return &NewDOMUI<DownloadsUI>;
if (url.host() == chrome::kChromeUIExtensionsHost)
return &NewDOMUI<ExtensionsUI>;
if (url.host() == chrome::kChromeUIHistoryHost)
return &NewDOMUI<HistoryUI>;
if (url.host() == chrome::kChromeUINetInternalsHost)
return &NewDOMUI<NetInternalsUI>;
#if defined(OS_CHROMEOS)
if (url.host() == chrome::kChromeUIFileBrowseHost)
return &NewDOMUI<FileBrowseUI>;
if (url.host() == chrome::kChromeUIMediaplayerHost)
return &NewDOMUI<MediaplayerUI>;
#endif
return NULL;
}
// static
DOMUITypeID DOMUIFactory::GetDOMUIType(const GURL& url) {
DOMUIFactoryFunction function = GetDOMUIFactoryFunction(url);
return function ? reinterpret_cast<DOMUITypeID>(function) : kNoDOMUI;
}
// static
bool DOMUIFactory::HasDOMUIScheme(const GURL& url) {
return url.SchemeIs(chrome::kChromeInternalScheme) ||
url.SchemeIs(chrome::kChromeUIScheme) ||
url.SchemeIs(chrome::kExtensionScheme) ||
url.SchemeIs(chrome::kPrintScheme);
}
// static
bool DOMUIFactory::UseDOMUIForURL(const GURL& url) {
return GetDOMUIFactoryFunction(url) != NULL;
}
// static
DOMUI* DOMUIFactory::CreateDOMUIForURL(TabContents* tab_contents,
const GURL& url) {
DOMUIFactoryFunction function = GetDOMUIFactoryFunction(url);
if (!function)
return NULL;
return (*function)(tab_contents, url);
}
// static
RefCountedMemory* DOMUIFactory::GetFaviconResourceBytes(Profile* profile,
const GURL& page_url) {
// The extensions DOM UI might need to load the favicon file so we alwyas run
// this on the FILE thread.
DCHECK(ChromeThread::CurrentlyOn(ChromeThread::FILE));
if (page_url.SchemeIs(chrome::kExtensionScheme))
return ExtensionDOMUI::GetFaviconResourceBytes(profile, page_url);
if (!HasDOMUIScheme(page_url))
return NULL;
if (page_url.host() == chrome::kChromeUIBookmarksHost)
return BookmarksUI::GetFaviconResourceBytes();
if (page_url.host() == chrome::kChromeUIDownloadsHost)
return DownloadsUI::GetFaviconResourceBytes();
if (page_url.host() == chrome::kChromeUIExtensionsHost)
return ExtensionsUI::GetFaviconResourceBytes();
if (page_url.host() == chrome::kChromeUIHistoryHost)
return HistoryUI::GetFaviconResourceBytes();
return NULL;
}
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