Revert 125801 - Implement a module system for the extension bindings JS.

chrome/renderer/extensions/chrome_v8_extension.cc

-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Copyright (c) 2011 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/chrome_v8_extension.h"
 
 #include "base/logging.h"
 #include "base/lazy_instance.h"
 #include "base/stringprintf.h"
 #include "base/string_util.h"
 #include "chrome/common/extensions/extension.h"
@@ skipping 14 matching lines @@
 
 namespace {
 
 static base::LazyInstance<ChromeV8Extension::InstanceSet> g_instances =
     LAZY_INSTANCE_INITIALIZER;
 
 }  // namespace
 
 
 // static
+base::StringPiece ChromeV8Extension::GetStringResource(int resource_id) {
+  return ResourceBundle::GetSharedInstance().GetRawDataResource(resource_id);
+}
+
+// static
 content::RenderView* ChromeV8Extension::GetCurrentRenderView() {
   WebFrame* webframe = WebFrame::frameForCurrentContext();
   DCHECK(webframe) << "RetrieveCurrentFrame called when not in a V8 context.";
   if (!webframe)
     return NULL;
 
   WebView* webview = webframe->view();
   if (!webview)
     return NULL;  // can happen during closing
 
   content::RenderView* renderview = content::RenderView::FromWebView(webview);
   DCHECK(renderview) << "Encountered a WebView without a WebViewDelegate";
   return renderview;
 }
 
-ChromeV8Extension::ChromeV8Extension(ExtensionDispatcher* extension_dispatcher)
-    : extension_dispatcher_(extension_dispatcher) {
+ChromeV8Extension::ChromeV8Extension(const char* name, int resource_id,
+                                     ExtensionDispatcher* extension_dispatcher)
+    : v8::Extension(name,
+                    GetStringResource(resource_id).data(),
+                    0,     // num dependencies
+                    NULL,  // dependencies array
+                    GetStringResource(resource_id).size()),  // source length
+      extension_dispatcher_(extension_dispatcher) {
+  g_instances.Get().insert(this);
+}
+
+ChromeV8Extension::ChromeV8Extension(const char* name, int resource_id,
+                                     int dependency_count,
+                                     const char** dependencies,
+                                     ExtensionDispatcher* extension_dispatcher)
+    : v8::Extension(name,
+                    GetStringResource(resource_id).data(),
+                    dependency_count,
+                    dependencies,
+                    GetStringResource(resource_id).size()),
+      extension_dispatcher_(extension_dispatcher) {
   g_instances.Get().insert(this);
 }
 
 ChromeV8Extension::~ChromeV8Extension() {
   g_instances.Get().erase(this);
 }
 
 // static
 const ChromeV8Extension::InstanceSet& ChromeV8Extension::GetAll() {
   return g_instances.Get();
 }
 
+void ChromeV8Extension::ContextWillBeReleased(ChromeV8Context* context) {
+  handlers_.erase(context);
+}
+
+ChromeV8ExtensionHandler* ChromeV8Extension::GetHandler(
+    ChromeV8Context* context) const {
+  HandlerMap::const_iterator iter = handlers_.find(context);
+  if (iter == handlers_.end())
+    return NULL;
+  else
+    return iter->second.get();
+}
+
 const Extension* ChromeV8Extension::GetExtensionForCurrentRenderView() const {
   content::RenderView* renderview = GetCurrentRenderView();
   if (!renderview)
     return NULL;  // this can happen as a tab is closing.
 
   WebDocument document = renderview->GetWebView()->mainFrame()->document();
   GURL url = document.url();
   const ExtensionSet* extensions = extension_dispatcher_->extensions();
   if (!extensions->ExtensionBindingsAllowed(
       ExtensionURLInfo(document.securityOrigin(), url)))
@@ skipping 33 matching lines @@
     static const char kMessage[] =
         "%s can only be used in an extension process.";
     std::string error_msg = base::StringPrintf(kMessage, function_name.c_str());
     v8::ThrowException(
         v8::Exception::Error(v8::String::New(error_msg.c_str())));
     return false;
   }
 
   return true;
 }
+
+v8::Handle<v8::FunctionTemplate>
+    ChromeV8Extension::GetNativeFunction(v8::Handle<v8::String> name) {
+  if (name->Equals(v8::String::New("GetChromeHidden"))) {
+    return v8::FunctionTemplate::New(GetChromeHidden);
+  }
+
+  if (name->Equals(v8::String::New("Print"))) {
+    return v8::FunctionTemplate::New(Print);
+  }
+
+  return v8::FunctionTemplate::New(HandleNativeFunction,
+                                   v8::External::New(this));
+}
+
+// static
+v8::Handle<v8::Value> ChromeV8Extension::HandleNativeFunction(
+    const v8::Arguments& arguments) {
+  ChromeV8Extension* self = GetFromArguments<ChromeV8Extension>(arguments);
+  ChromeV8Context* context =
+      self->extension_dispatcher()->v8_context_set().GetCurrent();
+  CHECK(context) << "Unknown V8 context. Maybe a native function is getting "
+                 << "called during parse of a v8 extension, before the context "
+                 << "has been registered.";
+
+  ChromeV8ExtensionHandler* handler = self->GetHandler(context);
+  if (!handler) {
+    handler = self->CreateHandler(context);
+    if (handler)
+      self->handlers_[context] = linked_ptr<ChromeV8ExtensionHandler>(handler);
+  }
+  CHECK(handler) << "No handler for v8 extension: " << self->name();
+
+  std::string name = *v8::String::AsciiValue(arguments.Callee()->GetName());
+  return handler->HandleNativeFunction(name, arguments);
+}
+
+ChromeV8ExtensionHandler* ChromeV8Extension::CreateHandler(
+    ChromeV8Context* context) {
+  return NULL;
+}
+
+v8::Handle<v8::Value> ChromeV8Extension::GetChromeHidden(
+    const v8::Arguments& args) {
+  return ChromeV8Context::GetOrCreateChromeHidden(v8::Context::GetCurrent());
+}
+
+v8::Handle<v8::Value> ChromeV8Extension::Print(const v8::Arguments& args) {
+  if (args.Length() < 1)
+    return v8::Undefined();
+
+  std::vector<std::string> components;
+  for (int i = 0; i < args.Length(); ++i)
+    components.push_back(*v8::String::Utf8Value(args[i]->ToString()));
+
+  LOG(ERROR) << JoinString(components, ',');
+  return v8::Undefined();
+}