Add CefSetOSModalLoop function (issue #194).

git-svn-id: https://chromiumembedded.googlecode.com/svn/trunk@1384 5089003a-bbd8-11dd-ad1f-f1f9622dbc98

include/capi/cef_app_capi.h

@@ -100,6 +100,12 @@ CEF_EXPORT void cef_run_message_loop();
 ///
 CEF_EXPORT void cef_quit_message_loop();
 
+///
+// Set to true (1) before calling Windows APIs like TrackPopupMenu that enter a
+// modal message loop. Set to false (0) after exiting the modal message loop.
+///
+CEF_EXPORT void cef_set_osmodal_loop(int osModalLoop);
+
 ///
 // Implement this structure to provide handler implementations. Methods will be
 // called by the process and/or thread indicated.

include/cef_app.h

@@ -107,6 +107,13 @@ void CefRunMessageLoop();
 /*--cef()--*/
 void CefQuitMessageLoop();
 
+///
+// Set to true before calling Windows APIs like TrackPopupMenu that enter a
+// modal message loop. Set to false after exiting the modal message loop.
+///
+/*--cef()--*/
+void CefSetOSModalLoop(bool osModalLoop);
+
 ///
 // Implement this interface to provide handler implementations. Methods will be
 // called by the process and/or thread indicated.

libcef/browser/context.cc

@@ -160,6 +160,21 @@ void CefQuitMessageLoop() {
   CefBrowserMessageLoop::current()->Quit();
 }
 
+void CefSetOSModalLoop(bool osModalLoop) {
+#if defined(OS_WIN)
+  // Verify that the context is in a valid state.
+  if (!CONTEXT_STATE_VALID()) {
+    NOTREACHED() << "context not valid";
+    return;
+  }
+
+  if (CEF_CURRENTLY_ON_UIT())
+    MessageLoop::current()->set_os_modal_loop(osModalLoop);
+  else
+    CEF_POST_TASK(CEF_UIT, base::Bind(CefSetOSModalLoop, osModalLoop));
+#endif  // defined(OS_WIN)
+}
+
 
 // CefContext
 

libcef_dll/libcef_dll.cc

@@ -267,6 +267,14 @@ CEF_EXPORT void cef_quit_message_loop() {
   CefQuitMessageLoop();
 }
 
+CEF_EXPORT void cef_set_osmodal_loop(int osModalLoop) {
+  // AUTO-GENERATED CONTENT - DELETE THIS COMMENT BEFORE MODIFYING
+
+  // Execute
+  CefSetOSModalLoop(
+      osModalLoop?true:false);
+}
+
 CEF_EXPORT int cef_get_geolocation(
     struct _cef_get_geolocation_callback_t* callback) {
   // AUTO-GENERATED CONTENT - DELETE THIS COMMENT BEFORE MODIFYING

libcef_dll/wrapper/libcef_dll_wrapper.cc

@@ -259,6 +259,14 @@ CEF_GLOBAL void CefQuitMessageLoop() {
   cef_quit_message_loop();
 }
 
+CEF_GLOBAL void CefSetOSModalLoop(bool osModalLoop) {
+  // AUTO-GENERATED CONTENT - DELETE THIS COMMENT BEFORE MODIFYING
+
+  // Execute
+  cef_set_osmodal_loop(
+      osModalLoop);
+}
+
 CEF_GLOBAL bool CefGetGeolocation(
     CefRefPtr<CefGetGeolocationCallback> callback) {
   // AUTO-GENERATED CONTENT - DELETE THIS COMMENT BEFORE MODIFYING

tests/cefclient/cefclient_win.cpp

@@ -492,6 +492,20 @@ LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam,
       }
       break;
 
+    case WM_ENTERMENULOOP:
+      if (!wParam) {
+        // Entering the menu loop for the application menu.
+        CefSetOSModalLoop(true);
+      }
+      break;
+
+    case WM_EXITMENULOOP:
+      if (!wParam) {
+        // Exiting the menu loop for the application menu.
+        CefSetOSModalLoop(false);
+      }
+      break;
+
     case WM_CLOSE:
       if (g_handler.get() && !g_handler->IsClosing()) {
         CefRefPtr<CefBrowser> browser = g_handler->GetBrowser();