blob: f2fa12905df94fcac3fccde586fa3f7c3966bf04 (
plain)
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
135
136
137
138
139
140
141
142
143
144
145
146
147
|
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/renderer/external_extension.h"
#include "base/command_line.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/render_messages.h"
#include "chrome/common/search_provider.h"
#include "content/public/renderer/render_view.h"
#include "third_party/WebKit/public/web/WebDocument.h"
#include "third_party/WebKit/public/web/WebFrame.h"
#include "third_party/WebKit/public/web/WebView.h"
#include "v8/include/v8.h"
using WebKit::WebFrame;
using WebKit::WebView;
using content::RenderView;
namespace extensions_v8 {
static const char* const kSearchProviderApi =
"var external;"
"if (!external)"
" external = {};"
"external.AddSearchProvider = function(name) {"
" native function NativeAddSearchProvider();"
" NativeAddSearchProvider(name);"
"};"
"external.IsSearchProviderInstalled = function(name) {"
" native function NativeIsSearchProviderInstalled();"
" return NativeIsSearchProviderInstalled(name);"
"};";
const char* const kExternalExtensionName = "v8/External";
class ExternalExtensionWrapper : public v8::Extension {
public:
ExternalExtensionWrapper();
// Allows v8's javascript code to call the native functions defined
// in this class for window.external.
virtual v8::Handle<v8::FunctionTemplate> GetNativeFunction(
v8::Handle<v8::String> name) OVERRIDE;
// Helper function to find the RenderView. May return NULL.
static RenderView* GetRenderView();
// Implementation of window.external.AddSearchProvider.
static void AddSearchProvider(
const v8::FunctionCallbackInfo<v8::Value>& args);
// Implementation of window.external.IsSearchProviderInstalled.
static void IsSearchProviderInstalled(
const v8::FunctionCallbackInfo<v8::Value>& args);
private:
DISALLOW_COPY_AND_ASSIGN(ExternalExtensionWrapper);
};
ExternalExtensionWrapper::ExternalExtensionWrapper()
: v8::Extension(
kExternalExtensionName,
kSearchProviderApi) {
}
v8::Handle<v8::FunctionTemplate> ExternalExtensionWrapper::GetNativeFunction(
v8::Handle<v8::String> name) {
if (name->Equals(v8::String::New("NativeAddSearchProvider")))
return v8::FunctionTemplate::New(AddSearchProvider);
if (name->Equals(v8::String::New("NativeIsSearchProviderInstalled")))
return v8::FunctionTemplate::New(IsSearchProviderInstalled);
return v8::Handle<v8::FunctionTemplate>();
}
// static
RenderView* ExternalExtensionWrapper::GetRenderView() {
WebFrame* webframe = WebFrame::frameForCurrentContext();
DCHECK(webframe) << "There should be an active frame since we just got "
"a native function called.";
if (!webframe) return NULL;
WebView* webview = webframe->view();
if (!webview) return NULL; // can happen during closing
return RenderView::FromWebView(webview);
}
// static
void ExternalExtensionWrapper::AddSearchProvider(
const v8::FunctionCallbackInfo<v8::Value>& args) {
if (!args.Length()) return;
std::string name = std::string(*v8::String::Utf8Value(args[0]));
if (!name.length()) return;
RenderView* render_view = GetRenderView();
if (!render_view) return;
GURL osd_url(name);
if (!osd_url.is_empty() && osd_url.is_valid()) {
render_view->Send(new ChromeViewHostMsg_PageHasOSDD(
render_view->GetRoutingID(), render_view->GetPageId(), osd_url,
search_provider::EXPLICIT_PROVIDER));
}
}
// static
void ExternalExtensionWrapper::IsSearchProviderInstalled(
const v8::FunctionCallbackInfo<v8::Value>& args) {
if (!args.Length()) return;
v8::String::Utf8Value utf8name(args[0]);
if (!utf8name.length()) return;
std::string name = std::string(*utf8name);
RenderView* render_view = GetRenderView();
if (!render_view) return;
WebFrame* webframe = WebFrame::frameForCurrentContext();
if (!webframe) return;
search_provider::InstallState install = search_provider::DENIED;
GURL inquiry_url = GURL(name);
if (!inquiry_url.is_empty()) {
render_view->Send(new ChromeViewHostMsg_GetSearchProviderInstallState(
render_view->GetRoutingID(),
webframe->document().url(),
inquiry_url,
&install));
}
if (install == search_provider::DENIED) {
// FIXME: throw access denied exception.
v8::ThrowException(v8::Exception::Error(v8::String::Empty()));
return;
}
args.GetReturnValue().Set(static_cast<int32_t>(install));
}
v8::Extension* ExternalExtension::Get() {
return new ExternalExtensionWrapper();
}
} // namespace extensions_v8
|
