Send message ack to devtools.

brightray/browser/devtools_embedder_message_dispatcher.cc

@@ -5,16 +5,12 @@
 #include "browser/devtools_embedder_message_dispatcher.h"
 
 #include "base/bind.h"
-#include "base/json/json_reader.h"
 #include "base/values.h"
 
 namespace brightray {
 
 namespace {
 
-static const char kFrontendHostMethod[] = "method";
-static const char kFrontendHostParams[] = "params";
-
 bool GetValue(const base::ListValue& list, int pos, std::string& value) {
   return list.GetString(pos, &value);
 }
@@ -250,30 +246,15 @@ DevToolsEmbedderMessageDispatcher::DevToolsEmbedderMessageDispatcher(
 
 DevToolsEmbedderMessageDispatcher::~DevToolsEmbedderMessageDispatcher() {}
 
-void DevToolsEmbedderMessageDispatcher::Dispatch(const std::string& message) {
-  std::string method;
-  base::ListValue empty_params;
-  base::ListValue* params = &empty_params;
-
-  base::DictionaryValue* dict;
-  scoped_ptr<base::Value> parsed_message(base::JSONReader::Read(message));
-  if (!parsed_message ||
-      !parsed_message->GetAsDictionary(&dict) ||
-      !dict->GetString(kFrontendHostMethod, &method) ||
-      (dict->HasKey(kFrontendHostParams) &&
-          !dict->GetList(kFrontendHostParams, &params))) {
-    LOG(ERROR) << "Cannot parse frontend host message: " << message;
-    return;
-  }
-
+std::string DevToolsEmbedderMessageDispatcher::Dispatch(
+    const std::string& method, base::ListValue* params) {
   HandlerMap::iterator it = handlers_.find(method);
-  if (it == handlers_.end()) {
-    LOG(ERROR) << "Unsupported frontend host method: " << message;
-    return;
-  }
+  if (it == handlers_.end())
+    return "Unsupported frontend host method: " + method;
 
   if (!it->second.Run(*params))
-    LOG(ERROR) << "Invalid frontend host message parameters: " << message;
+    return "Invalid frontend host message parameters: " + method;
+  return "";
 }
 
 void DevToolsEmbedderMessageDispatcher::RegisterHandler(

brightray/browser/devtools_embedder_message_dispatcher.h

@@ -63,7 +63,7 @@ class DevToolsEmbedderMessageDispatcher {
 
   ~DevToolsEmbedderMessageDispatcher();
 
-  void Dispatch(const std::string& message);
+  std::string Dispatch(const std::string& method, base::ListValue* params);
 
  private:
   typedef base::Callback<bool (const base::ListValue&)> Handler;

brightray/browser/inspectable_web_contents_impl.cc

@@ -11,6 +11,7 @@
 #include "browser/inspectable_web_contents_delegate.h"
 #include "browser/inspectable_web_contents_view.h"
 
+#include "base/json/json_reader.h"
 #include "base/prefs/pref_registry_simple.h"
 #include "base/prefs/pref_service.h"
 #include "base/strings/stringprintf.h"
@@ -21,6 +22,7 @@
 #include "content/public/browser/devtools_http_handler.h"
 #include "content/public/browser/devtools_manager.h"
 #include "content/public/browser/web_contents_view.h"
+#include "content/public/browser/render_frame_host.h"
 #include "content/public/browser/render_view_host.h"
 
 namespace brightray {
@@ -30,6 +32,10 @@ namespace {
 const char kChromeUIDevToolsURL[] = "chrome-devtools://devtools/devtools.html?can_dock=true";
 const char kDevToolsBoundsPref[] = "brightray.devtools.bounds";
 
+const char kFrontendHostId[] = "id";
+const char kFrontendHostMethod[] = "method";
+const char kFrontendHostParams[] = "params";
+
 void RectToDictionary(const gfx::Rect& bounds, base::DictionaryValue* dict) {
   dict->SetInteger("x", bounds.x());
   dict->SetInteger("y", bounds.y());
@@ -181,6 +187,8 @@ void InspectableWebContentsImpl::AppendToFile(
 }
 
 void InspectableWebContentsImpl::RequestFileSystems() {
+    devtools_web_contents()->GetMainFrame()->ExecuteJavaScript(
+        base::ASCIIToUTF16("InspectorFrontendAPI.fileSystemsLoaded([])"));
 }
 
 void InspectableWebContentsImpl::AddFileSystem() {
@@ -218,7 +226,30 @@ void InspectableWebContentsImpl::ResetZoom() {
 
 void InspectableWebContentsImpl::DispatchOnEmbedder(
     const std::string& message) {
-  embedder_message_dispatcher_->Dispatch(message);
+  std::string method;
+  base::ListValue empty_params;
+  base::ListValue* params = &empty_params;
+
+  base::DictionaryValue* dict = NULL;
+  scoped_ptr<base::Value> parsed_message(base::JSONReader::Read(message));
+  if (!parsed_message ||
+      !parsed_message->GetAsDictionary(&dict) ||
+      !dict->GetString(kFrontendHostMethod, &method) ||
+      (dict->HasKey(kFrontendHostParams) &&
+          !dict->GetList(kFrontendHostParams, &params))) {
+    LOG(ERROR) << "Invalid message was sent to embedder: " << message;
+    return;
+  }
+
+  int id = 0;
+  dict->GetInteger(kFrontendHostId, &id);
+
+  std::string error = embedder_message_dispatcher_->Dispatch(method, params);
+  if (id) {
+    std::string ack = base::StringPrintf(
+        "InspectorFrontendAPI.embedderMessageAck(%d, \"%s\");", id, error.c_str());
+    devtools_web_contents()->GetMainFrame()->ExecuteJavaScript(base::UTF8ToUTF16(ack));
+  }
 }
 
 void InspectableWebContentsImpl::InspectedContentsClosing() {