1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 /* ***** BEGIN LICENSE BLOCK *****
3 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
5 * The contents of this file are subject to the Mozilla Public License Version
6 * 1.1 (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 * http://www.mozilla.org/MPL/
10 * Software distributed under the License is distributed on an "AS IS" basis,
11 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
12 * for the specific language governing rights and limitations under the
15 * The Original Code is Mozilla.org code.
17 * The Initial Developer of the Original Code is
18 * Boris Zbarsky <bzbarsky@mit.edu>.
19 * Portions created by the Initial Developer are Copyright (C) 2005
20 * the Initial Developer. All Rights Reserved.
24 * Alternatively, the contents of this file may be used under the terms of
25 * either the GNU General Public License Version 2 or later (the "GPL"), or
26 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
27 * in which case the provisions of the GPL or the LGPL are applicable instead
28 * of those above. If you wish to allow use of your version of this file only
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30 * use your version of this file under the terms of the MPL, indicate your
31 * decision by deleting the provisions above and replace them with the notice
32 * and other provisions required by the GPL or the LGPL. If you do not delete
33 * the provisions above, a recipient may use your version of this file under
34 * the terms of any one of the MPL, the GPL or the LGPL.
36 * ***** END LICENSE BLOCK ***** */
38 #include "nsWebNavigationInfo.h"
39 #include "nsIWebNavigation.h"
41 #include "nsServiceManagerUtils.h"
42 #include "nsIDocumentLoaderFactory.h"
43 #include "nsIPluginHost.h"
45 NS_IMPL_ISUPPORTS1(nsWebNavigationInfo
, nsIWebNavigationInfo
)
47 #define CONTENT_DLF_CONTRACT "@mozilla.org/content/document-loader-factory;1"
48 #define PLUGIN_DLF_CONTRACT \
49 "@mozilla.org/content/plugin/document-loader-factory;1"
52 nsWebNavigationInfo::Init()
55 mCategoryManager
= do_GetService(NS_CATEGORYMANAGER_CONTRACTID
, &rv
);
56 NS_ENSURE_SUCCESS(rv
, rv
);
58 mImgLoader
= do_GetService("@mozilla.org/image/loader;1", &rv
);
64 nsWebNavigationInfo::IsTypeSupported(const nsACString
& aType
,
65 nsIWebNavigation
* aWebNav
,
66 PRUint32
* aIsTypeSupported
)
68 NS_PRECONDITION(aIsTypeSupported
, "null out param?");
70 // Note to self: aWebNav could be an nsWebBrowser or an nsDocShell here (or
71 // an nsSHistory, but not much we can do with that). So if we start using
72 // it here, we need to be careful to get to the docshell correctly.
74 // For now just report what the Gecko-Content-Viewers category has
76 *aIsTypeSupported
= nsIWebNavigationInfo::UNSUPPORTED
;
78 const nsCString
& flatType
= PromiseFlatCString(aType
);
79 nsresult rv
= IsTypeSupportedInternal(flatType
, aIsTypeSupported
);
80 NS_ENSURE_SUCCESS(rv
, rv
);
82 if (*aIsTypeSupported
) {
86 // Try reloading plugins in case they've changed.
87 nsCOMPtr
<nsIPluginHost
> pluginHost
=
88 do_GetService(MOZ_PLUGIN_HOST_CONTRACTID
);
90 // PR_FALSE will ensure that currently running plugins will not
92 rv
= pluginHost
->ReloadPlugins(PR_FALSE
);
93 if (NS_SUCCEEDED(rv
)) {
94 // OK, we reloaded plugins and there were new ones
95 // (otherwise NS_ERROR_PLUGINS_PLUGINSNOTCHANGED would have
96 // been returned). Try checking whether we can handle the
98 return IsTypeSupportedInternal(flatType
, aIsTypeSupported
);
106 nsWebNavigationInfo::IsTypeSupportedInternal(const nsCString
& aType
,
107 PRUint32
* aIsSupported
)
109 NS_PRECONDITION(mCategoryManager
, "Must have category manager");
110 NS_PRECONDITION(aIsSupported
, "Null out param?");
112 nsXPIDLCString value
;
113 nsresult rv
= mCategoryManager
->GetCategoryEntry("Gecko-Content-Viewers",
115 getter_Copies(value
));
117 // If the category manager can't find what we're looking for
118 // it returns NS_ERROR_NOT_AVAILABLE, we don't want to propagate
119 // that to the caller since it's really not a failure
121 if (NS_FAILED(rv
) && rv
!= NS_ERROR_NOT_AVAILABLE
)
124 // Now try to get an actual document loader factory for this contractid. If
125 // there is no contractid, don't try and just return false for *aIsSupported.
126 nsCOMPtr
<nsIDocumentLoaderFactory
> docLoaderFactory
;
127 if (!value
.IsEmpty()) {
128 docLoaderFactory
= do_GetService(value
.get());
131 // If we got a factory, we should be able to handle this type
132 if (!docLoaderFactory
) {
133 *aIsSupported
= nsIWebNavigationInfo::UNSUPPORTED
;
135 else if (value
.EqualsLiteral(CONTENT_DLF_CONTRACT
)) {
136 PRBool isImage
= PR_FALSE
;
137 mImgLoader
->SupportImageWithMimeType(aType
.get(), &isImage
);
139 *aIsSupported
= nsIWebNavigationInfo::IMAGE
;
142 *aIsSupported
= nsIWebNavigationInfo::OTHER
;
145 else if (value
.EqualsLiteral(PLUGIN_DLF_CONTRACT
)) {
146 *aIsSupported
= nsIWebNavigationInfo::PLUGIN
;
149 *aIsSupported
= nsIWebNavigationInfo::OTHER
;