libreofficekit: send show/hide messages for dialogs

Change-Id: I2b3ff5e5122b2be099be500ac544bf81f8d1b2ae
Reviewed-on: https://gerrit.libreoffice.org/71544
Tested-by: Jenkins
Reviewed-by: Jan Holesovsky <kendy@collabora.com>

include/LibreOfficeKit/LibreOfficeKitEnums.h

@@ -575,6 +575,8 @@ typedef enum
      * - "cursor_visible" - cursor visible status is changed. Status is available
      *    in "visible" field
      * - "close" - window is closed
+     * - "show" - show the window
+     * - "hide" - hide the window
      */
     LOK_CALLBACK_WINDOW = 36,
 

vcl/source/window/dialog.cxx

@@ -799,6 +799,16 @@ void Dialog::StateChanged( StateChangedType nType )
         ImplInitSettings();
         Invalidate();
     }
+
+    if (!mbModalMode && nType == StateChangedType::Visible)
+    {
+        if (const vcl::ILibreOfficeKitNotifier* pNotifier = GetLOKNotifier())
+        {
+            std::vector<vcl::LOKPayloadItem> aPayload;
+            aPayload.emplace_back("title", GetText().toUtf8());
+            pNotifier->notifyWindow(GetLOKWindowId(), IsVisible()? OUString("show"): OUString("hide"), aPayload);
+        }
+    }
 }
 
 void Dialog::DataChanged( const DataChangedEvent& rDCEvt )