Add support for ShowDevelopmentTools

appshell/appshell_extensions.cpp

@@ -41,7 +41,7 @@ class ProcessMessageDelegate : public ClientHandler::ProcessMessageDelegate {
                       CefRefPtr<CefProcessMessage> message) OVERRIDE {
         std::string message_name = message->GetName();
         CefRefPtr<CefListValue> argList = message->GetArgumentList();
-        int32 callbackId;
+        int32 callbackId = -1;
         int32 error = NO_ERROR;
         CefRefPtr<CefProcessMessage> response = 
             CefProcessMessage::Create("invokeCallback");
@@ -53,12 +53,13 @@ class ProcessMessageDelegate : public ClientHandler::ProcessMessageDelegate {
         //   argument0 - the id of this message. This id is passed back to the
         //               render process in order to execute callbacks
         //   argument1 - argumentN - the arguments for the function
+        //
+        // Note: Functions without callback can be specified, but they *cannot*
+        // take any arguments.
 
-        if (argList->GetSize() < 1) {
-            fprintf(stderr, "No callback id specified for function %s\n", message_name.c_str());
-            return false;
-        }
-        callbackId = argList->GetInt(0);
+        // If we have any arguments, the first is the callbackId
+        if (argList->GetSize() > 0)
+            callbackId = argList->GetInt(0);
 
         if (message_name == "ShowOpenDialog") {
             // Parameters:
@@ -212,17 +213,24 @@ class ProcessMessageDelegate : public ClientHandler::ProcessMessageDelegate {
 
                 // No additional response args for this function
             }
+        } else if (message_name == "ShowDeveloperTools") {
+            // Parameters - none
+
+            handler->ShowDevTools(browser);
+
         } else {
             fprintf(stderr, "Native function not implemented yet: %s\n", message_name.c_str());
             return false;
         }
 
-        // Set common response args (callbackId and error)
-        responseArgs->SetInt(0, callbackId);
-        responseArgs->SetInt(1, error);
-
-        // Send response
-        browser->SendProcessMessage(PID_RENDERER, response);
+        if (callbackId != -1) {
+            // Set common response args (callbackId and error)
+            responseArgs->SetInt(0, callbackId);
+            responseArgs->SetInt(1, error);
+
+            // Send response
+            browser->SendProcessMessage(PID_RENDERER, response);
+        }
 
         return true;
     }

appshell/cefclient.cpp

@@ -156,6 +156,9 @@ void AppGetSettings(CefSettings& settings, CefRefPtr<ClientApp> app) {
     // Provide a ClientApp instance to handle proxy resolution.
     app->SetProxyConfig(proxy_type, proxy_config);
   }
+
+  // Enable dev tools
+  settings.remote_debugging_port = 9234;
 }
 
 // Returns the application browser settings based on command line arguments.

appshell/client_app.cpp

@@ -144,30 +144,32 @@ class AppShellExtensionHandler : public CefV8Handler {
                        const CefV8ValueList& arguments,
                        CefRefPtr<CefV8Value>& retval,
                        CefString& exception) {
-
+      
       // The only message that is handled here is getElapsedMilliseconds(). All other
       // messages are passed to the browser process.
       if (name == "GetElapsedMilliseconds") {
           retval = CefV8Value::CreateDouble(client_app_->GetElapsedMilliseconds());
       } else {
           // Pass all messages to the browser process. Look in appshell_extensions.cpp for implementation.
           CefRefPtr<CefBrowser> browser = 
-          CefV8Context::GetCurrentContext()->GetBrowser();
+                CefV8Context::GetCurrentContext()->GetBrowser();
           ASSERT(browser.get());
           CefRefPtr<CefProcessMessage> message = 
                 CefProcessMessage::Create(name);
           CefRefPtr<CefListValue> messageArgs = message->GetArgumentList();
 
           // The first argument must be a callback function
-          if (arguments.size() < 1 || !arguments[0]->IsFunction()) {
+          if (arguments.size() > 0 && !arguments[0]->IsFunction()) {
               std::string functionName = name;
               fprintf(stderr, "Function called without callback param: %s\n", functionName.c_str());
               return false;
           } 
 
-          // The first argument is the message id
-          client_app_->AddCallback(messageId, CefV8Context::GetCurrentContext(), arguments[0]);
-          SetListValue(messageArgs, 0, CefV8Value::CreateInt(messageId));
+          if (arguments.size() > 0) {
+              // The first argument is the message id
+              client_app_->AddCallback(messageId, CefV8Context::GetCurrentContext(), arguments[0]);
+              SetListValue(messageArgs, 0, CefV8Value::CreateInt(messageId));
+          }
 
           // Pass the rest of the arguments
           for (unsigned int i = 1; i < arguments.size(); i++)

appshell/client_handler.cpp

@@ -14,7 +14,6 @@
 #include "string_util.h"
 #include "appshell/appshell_extensions.h"
 
-
 // Custom menu command Ids.
 enum client_menu_ids {
   CLIENT_ID_SHOW_DEVTOOLS   = MENU_ID_USER_FIRST,
@@ -292,6 +291,13 @@ void ClientHandler::ShowDevTools(CefRefPtr<CefBrowser> browser) {
   }
 }
 
+bool ClientHandler::OnBeforeUnloadDialog(CefRefPtr<CefBrowser> browser,
+                                  const CefString& message_text,
+                                  bool is_reload,
+                                  CefRefPtr<CefJSDialogCallback> callback) {
+    return false;
+}
+
 // static
 void ClientHandler::CreateProcessMessageDelegates(
       ProcessMessageDelegateSet& delegates) {

appshell/client_handler.h

@@ -25,7 +25,8 @@ class ClientHandler : public CefClient,
                       public CefRequestHandler,
                       public CefDisplayHandler,
                       public CefGeolocationHandler,
-                      public CefContextMenuHandler {
+                      public CefContextMenuHandler,
+                      public CefJSDialogHandler {
  public:
   // Interface for process message delegates. Do not perform work in the
   // RenderDelegate constructor.
@@ -85,6 +86,10 @@ class ClientHandler : public CefClient,
   virtual CefRefPtr<CefContextMenuHandler> GetContextMenuHandler() OVERRIDE {
     return this;
   }
+  virtual CefRefPtr<CefJSDialogHandler> GetJSDialogHandler() OVERRIDE {
+    return this;
+  }
+
   virtual bool OnProcessMessageRecieved(CefRefPtr<CefBrowser> browser,
                                         CefProcessId source_process,
                                         CefRefPtr<CefProcessMessage> message)
@@ -180,6 +185,12 @@ class ClientHandler : public CefClient,
 
   void ShowDevTools(CefRefPtr<CefBrowser> browser);
 
+  // CefJSDialogHandler methods
+  virtual bool OnBeforeUnloadDialog(CefRefPtr<CefBrowser> browser,
+                                    const CefString& message_text,
+                                    bool is_reload,
+                                    CefRefPtr<CefJSDialogCallback> callback);
+
  protected:
   void SetLoading(bool isLoading);
   void SetNavState(bool canGoBack, bool canGoForward);
@@ -217,7 +228,7 @@ class ClientHandler : public CefClient,
   CefWindowHandle m_ForwardHwnd;
   CefWindowHandle m_StopHwnd;
   CefWindowHandle m_ReloadHwnd;
-
+                          
   // Support for logging.
   std::string m_LogFile;