зеркало из https://github.com/mozilla/gecko-dev.git
113 строки
3.4 KiB
C++
113 строки
3.4 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsWebNavigationInfo.h"
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#include "nsIWebNavigation.h"
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#include "nsString.h"
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#include "nsServiceManagerUtils.h"
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#include "nsIDocumentLoaderFactory.h"
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#include "nsIPluginHost.h"
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#include "nsContentUtils.h"
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NS_IMPL_ISUPPORTS1(nsWebNavigationInfo, nsIWebNavigationInfo)
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#define CONTENT_DLF_CONTRACT "@mozilla.org/content/document-loader-factory;1"
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#define PLUGIN_DLF_CONTRACT \
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"@mozilla.org/content/plugin/document-loader-factory;1"
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nsresult
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nsWebNavigationInfo::Init()
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{
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nsresult rv;
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mCategoryManager = do_GetService(NS_CATEGORYMANAGER_CONTRACTID, &rv);
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NS_ENSURE_SUCCESS(rv, rv);
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mImgLoader = do_GetService("@mozilla.org/image/loader;1", &rv);
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return rv;
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}
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NS_IMETHODIMP
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nsWebNavigationInfo::IsTypeSupported(const nsACString& aType,
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nsIWebNavigation* aWebNav,
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uint32_t* aIsTypeSupported)
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{
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NS_PRECONDITION(aIsTypeSupported, "null out param?");
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// Note to self: aWebNav could be an nsWebBrowser or an nsDocShell here (or
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// an nsSHistory, but not much we can do with that). So if we start using
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// it here, we need to be careful to get to the docshell correctly.
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// For now just report what the Gecko-Content-Viewers category has
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// to say for itself.
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*aIsTypeSupported = nsIWebNavigationInfo::UNSUPPORTED;
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const nsCString& flatType = PromiseFlatCString(aType);
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nsresult rv = IsTypeSupportedInternal(flatType, aIsTypeSupported);
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NS_ENSURE_SUCCESS(rv, rv);
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if (*aIsTypeSupported) {
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return rv;
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}
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// Try reloading plugins in case they've changed.
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nsCOMPtr<nsIPluginHost> pluginHost =
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do_GetService(MOZ_PLUGIN_HOST_CONTRACTID);
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if (pluginHost) {
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// false will ensure that currently running plugins will not
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// be shut down
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rv = pluginHost->ReloadPlugins(false);
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if (NS_SUCCEEDED(rv)) {
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// OK, we reloaded plugins and there were new ones
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// (otherwise NS_ERROR_PLUGINS_PLUGINSNOTCHANGED would have
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// been returned). Try checking whether we can handle the
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// content now.
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return IsTypeSupportedInternal(flatType, aIsTypeSupported);
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}
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}
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return NS_OK;
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}
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nsresult
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nsWebNavigationInfo::IsTypeSupportedInternal(const nsCString& aType,
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uint32_t* aIsSupported)
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{
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NS_PRECONDITION(aIsSupported, "Null out param?");
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nsContentUtils::ContentViewerType vtype = nsContentUtils::TYPE_UNSUPPORTED;
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nsCOMPtr<nsIDocumentLoaderFactory> docLoaderFactory =
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nsContentUtils::FindInternalContentViewer(aType.get(), &vtype);
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switch (vtype) {
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case nsContentUtils::TYPE_UNSUPPORTED:
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*aIsSupported = nsIWebNavigationInfo::UNSUPPORTED;
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break;
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case nsContentUtils::TYPE_PLUGIN:
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*aIsSupported = nsIWebNavigationInfo::PLUGIN;
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break;
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case nsContentUtils::TYPE_UNKNOWN:
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*aIsSupported = nsIWebNavigationInfo::OTHER;
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break;
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case nsContentUtils::TYPE_CONTENT:
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bool isImage = false;
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mImgLoader->SupportImageWithMimeType(aType.get(), &isImage);
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if (isImage) {
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*aIsSupported = nsIWebNavigationInfo::IMAGE;
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}
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else {
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*aIsSupported = nsIWebNavigationInfo::OTHER;
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}
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break;
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}
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return NS_OK;
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}
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