Add two new APIs for currently active keyboard layout

Author: RaymondLim

appshell/appshell_extensions.js

@@ -747,6 +747,28 @@ if (!appshell.app) {
         configurable : false
     });
 
+    /**
+     * Return the user's keyboard layout language.
+     */
+    native function GetCurrentKeyboardLayout();
+    Object.defineProperty(appshell.app, "keyboard", {
+        writeable: false,
+        get : function() { return GetCurrentKeyboardLayout(); },
+        enumerable : true,
+        configurable : false
+    });
+ 
+    /**
+     * Return the user's keyboard layout device type.
+     */
+    native function GetKeyboardType();
+    Object.defineProperty(appshell.app, "keyboardType", {
+        writeable: false,
+        get : function() { return GetKeyboardType(); },
+        enumerable : true,
+        configurable : false
+    });
+ 
     /**
      * Returns the full path of the application support directory.
      * On the Mac, it's /Users/<user>/Library/Application Support[/GROUP_NAME]/APP_NAME

appshell/client_app.cpp

@@ -153,6 +153,10 @@ class AppShellExtensionHandler : public CefV8Handler {
           retval = CefV8Value::CreateDouble(client_app_->GetElapsedMilliseconds());
       } else if (name == "GetCurrentLanguage") {
           retval = CefV8Value::CreateString(client_app_->GetCurrentLanguage());
+      } else if (name == "GetCurrentKeyboardLayout") {
+          retval = CefV8Value::CreateString(client_app_->GetCurrentKeyboardLayout());
+      } else if (name == "GetKeyboardType") {
+          retval = CefV8Value::CreateString(client_app_->GetKeyboardType());
       } else if (name == "GetApplicationSupportDirectory") {
           retval = CefV8Value::CreateString(ClientApp::AppGetSupportDirectory());
       } else if (name == "GetUserDocumentsDirectory") {

appshell/client_app.h

@@ -90,6 +90,8 @@ class ClientApp : public CefApp,
   // Platform-specific methods implemented in client_app_mac/client_app_win
   double GetElapsedMilliseconds();
   CefString GetCurrentLanguage();
+  CefString GetCurrentKeyboardLayout();
+  CefString GetKeyboardType();
   std::string GetExtensionJSSource();
   static CefString AppGetSupportDirectory();
   static CefString AppGetDocumentsDirectory();

appshell/client_app_gtk.cpp

@@ -49,6 +49,19 @@ CefString ClientApp::GetCurrentLanguage()
     return CefString(loc);
 }
 
+CefString ClientApp::GetCurrentKeyboardLayout()
+{
+	// TODO: Get the user's active keyboard layout language
+	//       Returning the UI language for now
+    return GetCurrentLanguage();
+}
+
+CefString ClientApp::GetKeyboardType()
+{
+	// This API may not be needed for Linux. So just return an empty string for now.
+	return CefString("");
+}
+
 std::string ClientApp::GetExtensionJSSource()
 {
     //# We objcopy the appshell/appshell_extensions.js file, and link it directly into the binary.

appshell/client_app_mac.mm

@@ -55,6 +55,19 @@
     return result;
 }
 
+CefString ClientApp::GetCurrentKeyboardLayout()
+{
+	// TODO: Get the user's active keyboard layout language
+	//       Returning the UI language for now
+    return GetCurrentLanguage();
+}
+
+CefString ClientApp::GetKeyboardType()
+{
+	// This API is used for Windows only. So just return an empty string on Mac.
+	return CefString(@"");
+}
+
 std::string ClientApp::GetExtensionJSSource()
 {
     std::string result;

appshell/client_app_win.cpp

@@ -30,15 +30,12 @@
 #include <MMSystem.h>
 #include <ShlObj.h>
 #include <string>
+#include <stdio.h>
 
 extern DWORD g_appStartupTime;
 
-CefString ClientApp::GetCurrentLanguage()
+CefString GetLanguageFromId(LANGID langID)
 {
-	// Get the user's selected language
-	// Defaults to the system installed language if not using MUI.
-	LANGID langID = GetUserDefaultUILanguage();
-
 	// Convert LANGID to a RFC 4646 language tag (per navigator.language)
 	int langSize = GetLocaleInfo(langID, LOCALE_SISO639LANGNAME, NULL, 0);
 	int countrySize = GetLocaleInfo(langID, LOCALE_SISO3166CTRYNAME, NULL, 0);
@@ -59,6 +56,35 @@ CefString ClientApp::GetCurrentLanguage()
 	return CefString(locale);
 }
 
+CefString ClientApp::GetCurrentLanguage()
+{
+	// Get the user's selected language
+	// Defaults to the system installed language if not using MUI.
+	LANGID langID = GetUserDefaultUILanguage();
+    return GetLanguageFromId(langID);
+}
+
+
+CefString ClientApp::GetCurrentKeyboardLayout()
+{
+    // Get the user's active keyboard layout language
+	int kbd = (int)GetKeyboardLayout(0);
+    LANGID langID = MAKELANGID(kbd & 0xFFFF, kbd & 0xFFFF0000);
+    return GetLanguageFromId(langID);
+}
+
+CefString ClientApp::GetKeyboardType()
+{
+    // Get the user's active keyboard device type
+    int keyboardLayout = ((int)GetKeyboardLayout(0) & 0xFFFF0000) >> 16;
+    wchar_t *type = new wchar_t[10];
+    int len = swprintf_s(type, 10, L"%d", keyboardLayout);
+    std::wstring keyboardType(type);
+
+    delete [] type;
+    return CefString(keyboardType);
+}
+
 std::string ClientApp::GetExtensionJSSource()
 {
     extern HINSTANCE hInst;