Add notifications for when V8Proxy creates or destroys a V8 Context.

BUG=no
TEST=no

Review URL: http://codereview.chromium.org/147124


git-svn-id: svn://svn.chromium.org/chrome/trunk/src@19424 0039d316-1c4b-4281-b951-d872f2087c98

2 files changed, 22 insertions, 0 deletions

diff --git a/chrome/renderer/extensions/event_bindings.cc b/chrome/renderer/extensions/event_bindings.cc
index 576beba..7c988e2 100644
--- a/chrome/renderer/extensions/event_bindings.cc
+++ b/chrome/renderer/extensions/event_bindings.cc
@@ -12,6 +12,7 @@
 #include "chrome/renderer/js_only_v8_extensions.h"
 #include "chrome/renderer/render_thread.h"
 #include "grit/renderer_resources.h"
+#include "webkit/glue/webframe.h"
 
 namespace {
 
@@ -164,6 +165,22 @@ void EventBindings::SetRenderThread(RenderThreadBase* thread) {
   render_thread = thread;
 }
 
+// static
+void EventBindings::HandleContextCreated(WebFrame* frame) {
+  v8::HandleScope handle_scope;
+  v8::Local<v8::Context> context = frame->GetScriptContext();
+  DCHECK(!context.IsEmpty());
+  // TODO(mpcomplete): register it
+}
+
+// static
+void EventBindings::HandleContextDestroyed(WebFrame* frame) {
+  v8::HandleScope handle_scope;
+  v8::Local<v8::Context> context = frame->GetScriptContext();
+  DCHECK(!context.IsEmpty());
+  // TODO(mpcomplete): unregister it, dispatch event
+}
+
 void EventBindings::CallFunction(const std::string& function_name,
                                  int argc, v8::Handle<v8::Value>* argv) {
   for (ContextList::iterator it = GetRegisteredContexts().begin();
diff --git a/chrome/renderer/extensions/event_bindings.h b/chrome/renderer/extensions/event_bindings.h
index 0ca59c0..a026c19 100644
--- a/chrome/renderer/extensions/event_bindings.h
+++ b/chrome/renderer/extensions/event_bindings.h
@@ -10,6 +10,7 @@
 #include <string>
 
 class RenderThreadBase;
+class WebFrame;
 
 // This class deals with the javascript bindings related to Event objects.
 class EventBindings {
@@ -20,6 +21,10 @@ class EventBindings {
   // Allow RenderThread to be mocked out.
   static void SetRenderThread(RenderThreadBase* thread);
 
+  // Handle a script context coming / going away.
+  static void HandleContextCreated(WebFrame* frame);
+  static void HandleContextDestroyed(WebFrame* frame);
+
   // Calls the given function in each registered context which is listening
   // for events.  The function can be an object property, ie:
   // "chromium.Event.dispatch_".