Google 2FA: better info for user

Google sends SMS with code in format "G-XXXXXX".
User should enter only numbers wihout "G-".

+ added "G-" label which is shown in the Google
  authentication code request before PIN field

Change-Id: I8eaecbbe7b8803269444f947e97ee67c33db61b2

uui/source/authfallbackdlg.cxx

@@ -23,6 +23,7 @@ AuthFallbackDlg::AuthFallbackDlg(Window* pParent, const OUString& instructions,
     get( m_pEDCode, "code" );
     get( m_pBTOk, "ok" );
     get( m_pBTCancel, "cancel" );
+    get( m_pFTGooglePrefixLabel, "google_prefix_label" );
 
     m_pBTOk->SetClickHdl( LINK( this, AuthFallbackDlg, OKHdl) );
     m_pBTCancel->SetClickHdl( LINK( this, AuthFallbackDlg, CancelHdl) );
@@ -30,9 +31,17 @@ AuthFallbackDlg::AuthFallbackDlg(Window* pParent, const OUString& instructions,
 
     m_pTVInstructions->SetText( instructions );
     if( url.isEmpty() )
+    {
+        // Google 2FA
+        m_pFTGooglePrefixLabel->Show();
         m_pEDUrl->Hide();
+    }
     else
+    {
+        // OneDrive
+        m_pFTGooglePrefixLabel->Hide();
         m_pEDUrl->SetText( url );
+    }
 }
 
 AuthFallbackDlg::~AuthFallbackDlg()

uui/source/authfallbackdlg.hxx

@@ -14,6 +14,7 @@
 #include <vcl/dialog.hxx>
 #include <vcl/edit.hxx>
 #include <vcl/vclmedit.hxx>
+#include <vcl/fixed.hxx>
 
 
 class AuthFallbackDlg : public ModalDialog
@@ -24,6 +25,7 @@ private:
     VclPtr<Edit> m_pEDCode;
     VclPtr<PushButton> m_pBTOk;
     VclPtr<PushButton> m_pBTCancel;
+    VclPtr<FixedText> m_pFTGooglePrefixLabel;
 
 public:
     AuthFallbackDlg(Window* pParent, const OUString& instructions,

uui/uiconfig/ui/authfallback.ui

@@ -92,10 +92,32 @@
               </packing>
             </child>
             <child>
-              <object class="GtkEntry" id="code">
+              <object class="GtkBox" id="box1">
                 <property name="visible">True</property>
                 <property name="can_focus">False</property>
-                <property name="invisible_char">●</property>
+                <child>
+                  <object class="GtkLabel" id="google_prefix_label">
+                    <property name="can_focus">False</property>
+                    <property name="label" translatable="yes">G-</property>
+                  </object>
+                  <packing>
+                    <property name="expand">False</property>
+                    <property name="fill">True</property>
+                    <property name="position">0</property>
+                  </packing>
+                </child>
+                <child>
+                  <object class="GtkEntry" id="code">
+                    <property name="visible">True</property>
+                    <property name="can_focus">False</property>
+                    <property name="invisible_char">●</property>
+                  </object>
+                  <packing>
+                    <property name="expand">False</property>
+                    <property name="fill">True</property>
+                    <property name="position">1</property>
+                  </packing>
+                </child>
               </object>
               <packing>
                 <property name="expand">False</property>