blob: f57d5796ad1640cd5e8ae1bf6260ae4393c105f6 (
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
|
// 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/extensions/object_backed_native_handler.h"
#include "base/logging.h"
#include "base/memory/linked_ptr.h"
#include "chrome/renderer/extensions/module_system.h"
#include "v8/include/v8.h"
namespace extensions {
ObjectBackedNativeHandler::ObjectBackedNativeHandler(
v8::Handle<v8::Context> context)
: v8_context_(context),
object_template_(
v8::Persistent<v8::ObjectTemplate>::New(context->GetIsolate(),
v8::ObjectTemplate::New())),
is_valid_(true) {
}
ObjectBackedNativeHandler::~ObjectBackedNativeHandler() {
}
v8::Handle<v8::Object> ObjectBackedNativeHandler::NewInstance() {
return object_template_->NewInstance();
}
// static
v8::Handle<v8::Value> ObjectBackedNativeHandler::Router(
const v8::Arguments& args) {
// It is possible for JS code to execute after ModuleSystem has been deleted
// in which case the native handlers will also have been deleted, making
// HandlerFunction below point to freed memory.
if (!ModuleSystem::IsPresentInCurrentContext()) {
return v8::ThrowException(v8::Exception::Error(
v8::String::New("ModuleSystem has been deleted")));
}
HandlerFunction* handler_function = static_cast<HandlerFunction*>(
args.Data().As<v8::External>()->Value());
return handler_function->Run(args);
}
void ObjectBackedNativeHandler::RouteFunction(const std::string& name,
const HandlerFunction& handler_function) {
linked_ptr<HandlerFunction> function(new HandlerFunction(handler_function));
// TODO(koz): Investigate using v8's MakeWeak() function instead of holding
// on to these pointers here.
handler_functions_.push_back(function);
v8::Handle<v8::FunctionTemplate> function_template =
v8::FunctionTemplate::New(Router,
v8::External::New(function.get()));
object_template_->Set(name.c_str(), function_template);
}
void ObjectBackedNativeHandler::RouteStaticFunction(const std::string& name,
const HandlerFunc handler_func) {
v8::Handle<v8::FunctionTemplate> function_template =
v8::FunctionTemplate::New(handler_func, v8::External::New(this));
object_template_->Set(name.c_str(), function_template);
}
bool ObjectBackedNativeHandler::Invalidate() {
if (!is_valid_)
return false;
object_template_.Dispose(v8_context_->GetIsolate());
is_valid_ = false;
return true;
}
} // extensions
|
