1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
|
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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;
// We want to claim that the type for PDF documents is unsupported,
// so that the internal PDF viewer's stream converted will get used.
if (aType.LowerCaseEqualsLiteral("application/pdf") &&
nsContentUtils::IsPDFJSEnabled()) {
return NS_OK;
}
// We want to claim that the type for SWF movies is unsupported,
// so that the internal SWF player's stream converter will get used.
if (aType.LowerCaseEqualsLiteral("application/x-shockwave-flash") &&
nsContentUtils::IsSWFPlayerEnabled()) {
return NS_OK;
}
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, &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;
}
|
