QPlatformDialogHelper: Split class hierarchy, decouple from Dialog

- Introduce hierarchy of QPlatformDialogHelper-derived classes
  for font, color and file dialogs.
- Start reducing dependencies on QDialog:
  * Remove QDialog-specifics from interface, introduce enumeration
    for DialogCode
  * Make the helpers Q_OBJECTS to be able to add the signals
    passed on to the QDialogs
  * Remove QDialogPrivate pointer
- Split setVisible_sys() in show_sys() (factory method for native
  dialogs) and hide_sys(). Pass parent window to  show_sys(),
  removing the necessity to query the QDialog for it
- Introduce a styleHint() similar to QGuiApplication's for
  platform-specific
- Fix compile in cocoa/windows, reduce depency on QDialog
  (-private) classes.

Change-Id: Ic1cb715e1edf767f2cb18b9780341d189339ef1d
Reviewed-by: Morten Johan Sørvig <morten.sorvig@nokia.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/src/plugins/platforms/windows/qwindowsintegration.cpp b/src/plugins/platforms/windows/qwindowsintegration.cpp
index 4975347748..4ffbdb7491 100644
--- a/src/plugins/platforms/windows/qwindowsintegration.cpp
+++ b/src/plugins/platforms/windows/qwindowsintegration.cpp
@@ -325,12 +325,12 @@ QAbstractEventDispatcher * QWindowsIntegration::guiThreadEventDispatcher() const
 #ifdef QT_WIDGETS_LIB
 bool QWindowsIntegration::usePlatformNativeDialog(QDialog *dialog) const
 {
-    return QWindowsDialogHelperBase::useHelper(dialog);
+    return QWindowsDialogs::useHelper(dialog);
 }
 
 QPlatformDialogHelper *QWindowsIntegration::createPlatformDialogHelper(QDialog *dialog) const
 {
-    return QWindowsDialogHelperBase::create(dialog);
+    return QWindowsDialogs::createHelper(dialog);
 }
 
 #endif // QT_WIDGETS_LIB