зеркало из https://github.com/mozilla/gecko-dev.git
121 строка
3.8 KiB
C++
121 строка
3.8 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#include "nsWebNavigationInfo.h"
|
|
#include "nsIWebNavigation.h"
|
|
#include "nsServiceManagerUtils.h"
|
|
#include "nsIDocumentLoaderFactory.h"
|
|
#include "nsIPluginHost.h"
|
|
#include "nsIDocShell.h"
|
|
#include "nsContentUtils.h"
|
|
#include "imgLoader.h"
|
|
|
|
NS_IMPL_ISUPPORTS(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);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsWebNavigationInfo::IsTypeSupported(const nsACString& aType,
|
|
nsIWebNavigation* aWebNav,
|
|
uint32_t* 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;
|
|
}
|
|
|
|
// If this request is for a docShell that isn't going to allow plugins,
|
|
// there's no need to try and find a plugin to handle it.
|
|
nsCOMPtr<nsIDocShell> docShell(do_QueryInterface(aWebNav));
|
|
bool allowed;
|
|
if (docShell && NS_SUCCEEDED(docShell->GetAllowPlugins(&allowed)) && !allowed) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// Try reloading plugins in case they've changed.
|
|
nsCOMPtr<nsIPluginHost> pluginHost =
|
|
do_GetService(MOZ_PLUGIN_HOST_CONTRACTID);
|
|
if (pluginHost) {
|
|
// false will ensure that currently running plugins will not
|
|
// be shut down
|
|
rv = pluginHost->ReloadPlugins();
|
|
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,
|
|
uint32_t* aIsSupported)
|
|
{
|
|
NS_PRECONDITION(aIsSupported, "Null out param?");
|
|
|
|
|
|
nsContentUtils::ContentViewerType vtype = nsContentUtils::TYPE_UNSUPPORTED;
|
|
|
|
nsCOMPtr<nsIDocumentLoaderFactory> docLoaderFactory =
|
|
nsContentUtils::FindInternalContentViewer(aType.get(), &vtype);
|
|
|
|
switch (vtype) {
|
|
case nsContentUtils::TYPE_UNSUPPORTED:
|
|
*aIsSupported = nsIWebNavigationInfo::UNSUPPORTED;
|
|
break;
|
|
|
|
case nsContentUtils::TYPE_PLUGIN:
|
|
*aIsSupported = nsIWebNavigationInfo::PLUGIN;
|
|
break;
|
|
|
|
case nsContentUtils::TYPE_UNKNOWN:
|
|
*aIsSupported = nsIWebNavigationInfo::OTHER;
|
|
break;
|
|
|
|
case nsContentUtils::TYPE_CONTENT:
|
|
// XXXbz we only need this because images register for the same
|
|
// contractid as documents, so we can't tell them apart based on
|
|
// contractid.
|
|
if (imgLoader::SupportImageWithMimeType(aType.get())) {
|
|
*aIsSupported = nsIWebNavigationInfo::IMAGE;
|
|
}
|
|
else {
|
|
*aIsSupported = nsIWebNavigationInfo::OTHER;
|
|
}
|
|
break;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|