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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla.org code.
*
* The Initial Developer of the Original Code is
* Boris Zbarsky <bzbarsky@mit.edu>.
* Portions created by the Initial Developer are Copyright (C) 2005
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "nsWebNavigationInfo.h"
#include "nsIWebNavigation.h"
#include "nsString.h"
#include "nsServiceManagerUtils.h"
#include "nsIDocumentLoaderFactory.h"
#include "nsIPluginManager.h"
NS_IMPL_ISUPPORTS1(nsWebNavigationInfo, nsIWebNavigationInfo)
#define CONTENT_DLF_CONTRACT "@mozilla.org/content/document-loader-factory;1"
#define PLUGIN_DLF_CONTRACT \
"@mozilla.org/content/plugin/document-loader-factory;1"
nsresult
nsWebNavigationInfo::Init()
{
nsresult rv;
mCategoryManager = do_GetService(NS_CATEGORYMANAGER_CONTRACTID, &rv);
NS_ENSURE_SUCCESS(rv, rv);
mImgLoader = do_GetService("@mozilla.org/image/loader;1", &rv);
return rv;
}
NS_IMETHODIMP
nsWebNavigationInfo::IsTypeSupported(const nsACString& aType,
nsIWebNavigation* aWebNav,
PRUint32* aIsTypeSupported)
{
NS_PRECONDITION(aIsTypeSupported, "null out param?");
// Note to self: aWebNav could be an nsWebBrowser or an nsDocShell here (or
// an nsSHistory, but not much we can do with that). So if we start using
// it here, we need to be careful to get to the docshell correctly.
// For now just report what the Gecko-Content-Viewers category has
// to say for itself.
*aIsTypeSupported = nsIWebNavigationInfo::UNSUPPORTED;
const nsCString& flatType = PromiseFlatCString(aType);
nsresult rv = IsTypeSupportedInternal(flatType, aIsTypeSupported);
NS_ENSURE_SUCCESS(rv, rv);
if (*aIsTypeSupported) {
return rv;
}
// Try reloading plugins in case they've changed.
nsCOMPtr<nsIPluginManager> pluginManager =
do_GetService("@mozilla.org/plugin/manager;1");
if (pluginManager) {
// PR_FALSE will ensure that currently running plugins will not
// be shut down
rv = pluginManager->ReloadPlugins(PR_FALSE);
if (NS_SUCCEEDED(rv)) {
// OK, we reloaded plugins and there were new ones
// (otherwise NS_ERROR_PLUGINS_PLUGINSNOTCHANGED would have
// been returned). Try checking whether we can handle the
// content now.
return IsTypeSupportedInternal(flatType, aIsTypeSupported);
}
}
return NS_OK;
}
nsresult
nsWebNavigationInfo::IsTypeSupportedInternal(const nsCString& aType,
PRUint32* aIsSupported)
{
NS_PRECONDITION(mCategoryManager, "Must have category manager");
NS_PRECONDITION(aIsSupported, "Null out param?");
nsXPIDLCString value;
nsresult rv = mCategoryManager->GetCategoryEntry("Gecko-Content-Viewers",
aType.get(),
getter_Copies(value));
// If the category manager can't find what we're looking for
// it returns NS_ERROR_NOT_AVAILABLE, we don't want to propagate
// that to the caller since it's really not a failure
if (NS_FAILED(rv) && rv != NS_ERROR_NOT_AVAILABLE)
return rv;
// Now try to get an actual document loader factory for this contractid. If
// there is no contractid, don't try and just return false for *aIsSupported.
nsCOMPtr<nsIDocumentLoaderFactory> docLoaderFactory;
if (!value.IsEmpty()) {
docLoaderFactory = do_GetService(value.get());
}
// If we got a factory, we should be able to handle this type
if (!docLoaderFactory) {
*aIsSupported = nsIWebNavigationInfo::UNSUPPORTED;
}
else if (value.EqualsLiteral(CONTENT_DLF_CONTRACT)) {
PRBool isImage = PR_FALSE;
mImgLoader->SupportImageWithMimeType(aType.get(), &isImage);
if (isImage) {
*aIsSupported = nsIWebNavigationInfo::IMAGE;
}
else {
*aIsSupported = nsIWebNavigationInfo::OTHER;
}
}
else if (value.EqualsLiteral(PLUGIN_DLF_CONTRACT)) {
*aIsSupported = nsIWebNavigationInfo::PLUGIN;
}
else {
*aIsSupported = nsIWebNavigationInfo::OTHER;
}
return NS_OK;
}
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