DevTools: make pause work for script evaluations

webkit/glue/devtools/debugger_agent_impl.cc

Index: webkit/glue/devtools/debugger_agent_impl.cc
===================================================================
--- webkit/glue/devtools/debugger_agent_impl.cc	(revision 21636)
+++ webkit/glue/devtools/debugger_agent_impl.cc	(working copy)
@@ -158,6 +158,9 @@
     return "";
   }
   v8::Context::Scope context_scope(context);
+
+  DebuggerAgentManager::UtilityContextScope utility_scope;
+
   v8::Handle<v8::Function> function = v8::Local<v8::Function>::Cast(
       context->Global()->Get(v8::String::New("devtools$$dispatch")));
 
@@ -180,6 +183,62 @@
   }
 }
 
+String DebuggerAgentImpl::EvaluateJavaScript(
+    v8::Handle<v8::Context> utility_context,
+    const String& source,
+    String* exception) {
+  v8::HandleScope scope;
+  ASSERT(!utility_context.IsEmpty());
+  if (utility_context.IsEmpty()) {
+    *exception = "No window utility context.";
+    return "";
+  }
+
+  v8::Handle<v8::Value> res_obj;
+  { // Do evaluate.
+    DebuggerAgentManager::UtilityContextScope utility_scope;
+    v8::Handle<v8::Context> v8Context =
+        V8Proxy::context(GetPage()->mainFrame());
+    if (v8Context.IsEmpty()) {
+      *exception = "No window context.";
+      return "";
+    }
+    V8Proxy* proxy = V8Proxy::retrieve(GetPage()->mainFrame());
+    v8::Context::Scope context_scope(v8Context);
+    v8::TryCatch try_catch;
+    v8::Handle<v8::Script> script = proxy->compileScript(
+        v8ExternalString(source),
+        String(),  // url
+        0);  // source start
+    res_obj = proxy->runScript(script, true);
+    if (try_catch.HasCaught()) {
+      v8::Handle<v8::String> msg = try_catch.Message()->Get();
+      if (!msg.IsEmpty()) {
+        *exception = WebCore::toWebCoreString(msg);
+      } else {
+        *exception = "Failed to evaluate.";
+      }
+      return "";
+    }
+    DCHECK(!res_obj.IsEmpty());
+  }
+
+  { // Wrap the result.
+    v8::Context::Scope context_scope(utility_context);
+
+    v8::Handle<v8::Object> devtools = v8::Local<v8::Object>::Cast(
+        utility_context->Global()->Get(v8::String::New("devtools$$obj")));
+    v8::Handle<v8::Function> function = v8::Local<v8::Function>::Cast(
+        devtools->Get(v8::String::New("serializeConsoleObject")));
+
+    v8::Handle<v8::Value> args[] = {
+      res_obj
+    };
+    res_obj = function->Call(devtools, 1, args);
+    return WebCore::toWebCoreStringWithNullCheck(res_obj);
+  }
+}
+
 WebCore::Page* DebuggerAgentImpl::GetPage() {
   return web_view_impl_->page();
 }