Improve wxTE_PROCESS_ENTER handling in wxUniv

include/wx/univ/textctrl.h

@@ -36,6 +36,7 @@ class WXDLLIMPEXP_FWD_CORE wxTextCtrlCommandProcessor;
 #define wxACTION_TEXT_WORD_RIGHT    wxT("wordright")
 #define wxACTION_TEXT_PAGE_UP       wxT("pageup")
 #define wxACTION_TEXT_PAGE_DOWN     wxT("pagedown")
+#define wxACTION_TEXT_RETURN        wxT("return")
 
 // clipboard operations
 #define wxACTION_TEXT_COPY          wxT("copy")
@@ -451,6 +452,8 @@ protected:
     bool DoCut();
     bool DoPaste();
 
+    bool ClickDefaultButtonIfPossible();
+
 private:
     // all these methods are for multiline text controls only
 

src/univ/dialog.cpp

@@ -96,8 +96,12 @@ void wxDialog::OnOK(wxCommandEvent &WXUNUSED(event))
         }
         else
         {
-            SetReturnCode(wxID_OK);
-            Show(false);
+            // don't change return code from event char if it was set earlier
+            if (GetReturnCode() == 0)
+            {
+                SetReturnCode(wxID_OK);
+                Show(false);
+            }
         }
     }
 }

src/univ/textctrl.cpp

@@ -4676,6 +4676,15 @@ bool wxTextCtrl::PerformAction(const wxControlAction& actionOrig,
         if ( CanRedo() )
             Redo();
     }
+    else if ( action == wxACTION_TEXT_RETURN )
+    {
+        // activate default button
+        if ( !HasFlag(wxTE_PROCESS_ENTER) && !HasFlag(wxTE_MULTILINE) )
+        {
+            return ClickDefaultButtonIfPossible();
+        }
+        return false;
+    }
     else
     {
         return wxControl::PerformAction(action, numArg, strArg);
@@ -4768,13 +4777,18 @@ void wxTextCtrl::OnChar(wxKeyEvent& event)
 #endif
         if ( keycode == WXK_RETURN )
         {
-            if ( IsSingleLine() || (GetWindowStyle() & wxTE_PROCESS_ENTER) )
+            if ( (GetWindowStyle() & wxTE_PROCESS_ENTER) )
             {
                 wxCommandEvent event(wxEVT_TEXT_ENTER, GetId());
                 InitCommandEvent(event);
                 event.SetString(GetValue());
                 GetEventHandler()->ProcessEvent(event);
             }
+
+            if ( IsSingleLine() )
+            {
+                ClickDefaultButtonIfPossible();
+            }
             else // interpret <Enter> normally: insert new line
             {
                 PerformAction(wxACTION_TEXT_INSERT, -1, wxT('\n'));
@@ -4805,6 +4819,23 @@ void wxTextCtrl::OnChar(wxKeyEvent& event)
     event.Skip();
 }
 
+bool wxTextCtrl::ClickDefaultButtonIfPossible()
+{
+    wxTopLevelWindow* tlw = wxDynamicCast(wxGetTopLevelParent(this), wxTopLevelWindow);
+    if ( tlw )
+    {
+        wxButton* btn = wxDynamicCast(tlw->GetDefaultItem(), wxButton);
+        if ( btn )
+        {
+            wxCommandEvent evt(wxEVT_BUTTON, btn->GetId());
+            evt.SetEventObject(btn);
+            btn->Command(evt);
+            return true;
+        }
+    }
+    return false;
+}
+
 /* static */
 wxInputHandler *wxTextCtrl::GetStdInputHandler(wxInputHandler *handlerDef)
 {
@@ -4922,6 +4953,9 @@ bool wxStdTextCtrlInputHandler::HandleKey(wxInputConsumer *consumer,
                 action << wxACTION_TEXT_PREFIX_DEL << wxACTION_TEXT_LEFT;
             break;
 
+        case WXK_RETURN:
+            action << wxACTION_TEXT_RETURN;
+            break;
         // something else
         default:
             // reset the action as it could be already set to one of the
@@ -4957,7 +4991,11 @@ bool wxStdTextCtrlInputHandler::HandleKey(wxInputConsumer *consumer,
 
     if ( (action != wxACTION_NONE) && (action != wxACTION_TEXT_PREFIX_SEL) )
     {
-        consumer->PerformAction(action, -1, str);
+        bool result = consumer->PerformAction(action, -1, str);
+        if ( !result && action == wxACTION_TEXT_RETURN )
+        {
+            return wxStdInputHandler::HandleKey(consumer, event, pressed);
+        }
 
         // the key down of WXK_UP/DOWN and WXK_PAGEUP/DOWN
         // must generate a wxEVT_TEXT event. For the controls