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docshell/base/nsWebNavigationInfo.cpp@6474c204b198 (annotated)

docshell/base/nsWebNavigationInfo.cpp

Wed, 31 Dec 2014 06:09:35 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Wed, 31 Dec 2014 06:09:35 +0100

changeset 0

6474c204b198

permissions

-rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

michael@0	1	/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0	2	/* This Source Code Form is subject to the terms of the Mozilla Public
michael@0	3	* License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0	4	* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0	5
michael@0	6	#include "nsWebNavigationInfo.h"
michael@0	7	#include "nsIWebNavigation.h"
michael@0	8	#include "nsServiceManagerUtils.h"
michael@0	9	#include "nsIDocumentLoaderFactory.h"
michael@0	10	#include "nsIPluginHost.h"
michael@0	11	#include "nsIDocShell.h"
michael@0	12	#include "nsContentUtils.h"
michael@0	13	#include "imgLoader.h"
michael@0	14
michael@0	15	NS_IMPL_ISUPPORTS(nsWebNavigationInfo, nsIWebNavigationInfo)
michael@0	16
michael@0	17	#define CONTENT_DLF_CONTRACT "@mozilla.org/content/document-loader-factory;1"
michael@0	18	#define PLUGIN_DLF_CONTRACT \
michael@0	19	"@mozilla.org/content/plugin/document-loader-factory;1"
michael@0	20
michael@0	21	nsresult
michael@0	22	nsWebNavigationInfo::Init()
michael@0	23	{
michael@0	24	nsresult rv;
michael@0	25	mCategoryManager = do_GetService(NS_CATEGORYMANAGER_CONTRACTID, &rv);
michael@0	26	NS_ENSURE_SUCCESS(rv, rv);
michael@0	27
michael@0	28	return NS_OK;
michael@0	29	}
michael@0	30
michael@0	31	NS_IMETHODIMP
michael@0	32	nsWebNavigationInfo::IsTypeSupported(const nsACString& aType,
michael@0	33	nsIWebNavigation* aWebNav,
michael@0	34	uint32_t* aIsTypeSupported)
michael@0	35	{
michael@0	36	NS_PRECONDITION(aIsTypeSupported, "null out param?");
michael@0	37
michael@0	38	// Note to self: aWebNav could be an nsWebBrowser or an nsDocShell here (or
michael@0	39	// an nsSHistory, but not much we can do with that). So if we start using
michael@0	40	// it here, we need to be careful to get to the docshell correctly.
michael@0	41
michael@0	42	// For now just report what the Gecko-Content-Viewers category has
michael@0	43	// to say for itself.
michael@0	44	*aIsTypeSupported = nsIWebNavigationInfo::UNSUPPORTED;
michael@0	45
michael@0	46	const nsCString& flatType = PromiseFlatCString(aType);
michael@0	47	nsresult rv = IsTypeSupportedInternal(flatType, aIsTypeSupported);
michael@0	48	NS_ENSURE_SUCCESS(rv, rv);
michael@0	49
michael@0	50	if (*aIsTypeSupported) {
michael@0	51	return rv;
michael@0	52	}
michael@0	53
michael@0	54	// If this request is for a docShell that isn't going to allow plugins,
michael@0	55	// there's no need to try and find a plugin to handle it.
michael@0	56	nsCOMPtr<nsIDocShell> docShell(do_QueryInterface(aWebNav));
michael@0	57	bool allowed;
michael@0	58	if (docShell && NS_SUCCEEDED(docShell->GetAllowPlugins(&allowed)) && !allowed) {
michael@0	59	return NS_OK;
michael@0	60	}
michael@0	61
michael@0	62	// Try reloading plugins in case they've changed.
michael@0	63	nsCOMPtr<nsIPluginHost> pluginHost =
michael@0	64	do_GetService(MOZ_PLUGIN_HOST_CONTRACTID);
michael@0	65	if (pluginHost) {
michael@0	66	// false will ensure that currently running plugins will not
michael@0	67	// be shut down
michael@0	68	rv = pluginHost->ReloadPlugins();
michael@0	69	if (NS_SUCCEEDED(rv)) {
michael@0	70	// OK, we reloaded plugins and there were new ones
michael@0	71	// (otherwise NS_ERROR_PLUGINS_PLUGINSNOTCHANGED would have
michael@0	72	// been returned). Try checking whether we can handle the
michael@0	73	// content now.
michael@0	74	return IsTypeSupportedInternal(flatType, aIsTypeSupported);
michael@0	75	}
michael@0	76	}
michael@0	77
michael@0	78	return NS_OK;
michael@0	79	}
michael@0	80
michael@0	81	nsresult
michael@0	82	nsWebNavigationInfo::IsTypeSupportedInternal(const nsCString& aType,
michael@0	83	uint32_t* aIsSupported)
michael@0	84	{
michael@0	85	NS_PRECONDITION(aIsSupported, "Null out param?");
michael@0	86
michael@0	87
michael@0	88	nsContentUtils::ContentViewerType vtype = nsContentUtils::TYPE_UNSUPPORTED;
michael@0	89
michael@0	90	nsCOMPtr<nsIDocumentLoaderFactory> docLoaderFactory =
michael@0	91	nsContentUtils::FindInternalContentViewer(aType.get(), &vtype);
michael@0	92
michael@0	93	switch (vtype) {
michael@0	94	case nsContentUtils::TYPE_UNSUPPORTED:
michael@0	95	*aIsSupported = nsIWebNavigationInfo::UNSUPPORTED;
michael@0	96	break;
michael@0	97
michael@0	98	case nsContentUtils::TYPE_PLUGIN:
michael@0	99	*aIsSupported = nsIWebNavigationInfo::PLUGIN;
michael@0	100	break;
michael@0	101
michael@0	102	case nsContentUtils::TYPE_UNKNOWN:
michael@0	103	*aIsSupported = nsIWebNavigationInfo::OTHER;
michael@0	104	break;
michael@0	105
michael@0	106	case nsContentUtils::TYPE_CONTENT:
michael@0	107	// XXXbz we only need this because images register for the same
michael@0	108	// contractid as documents, so we can't tell them apart based on
michael@0	109	// contractid.
michael@0	110	if (imgLoader::SupportImageWithMimeType(aType.get())) {
michael@0	111	*aIsSupported = nsIWebNavigationInfo::IMAGE;
michael@0	112	}
michael@0	113	else {
michael@0	114	*aIsSupported = nsIWebNavigationInfo::OTHER;
michael@0	115	}
michael@0	116	break;
michael@0	117	}
michael@0	118
michael@0	119	return NS_OK;
michael@0	120	}