Qt: don't attach the core dialogs to the Main Interface but to the Dialog Provider.

This fix all the dialogs (Fix AVI, HTTP login) that didn't show in skins interface.
Manual port of [3b2f1606]

modules/gui/qt4/dialogs/external.cpp

@@ -36,8 +36,8 @@
 #include <QProgressDialog>
 #include <QMutex>
 
-DialogHandler::DialogHandler (intf_thread_t *intf)
-    : intf (intf),
+DialogHandler::DialogHandler (intf_thread_t *intf, QObject *_parent)
+    : intf (intf), QObject( _parent ),
       message (VLC_OBJECT(intf), "dialog-fatal", VLC_VAR_ADDRESS),
       login (VLC_OBJECT(intf), "dialog-login", VLC_VAR_ADDRESS),
       question (VLC_OBJECT(intf), "dialog-question", VLC_VAR_ADDRESS),

modules/gui/qt4/dialogs/external.hpp

@@ -35,7 +35,7 @@ class DialogHandler : public QObject
     friend class QVLCProgressDialog;
 
 public:
-    DialogHandler (intf_thread_t *);
+    DialogHandler (intf_thread_t *, QObject *parent);
     ~DialogHandler (void);
 
 private:

modules/gui/qt4/dialogs_provider.cpp

@@ -52,6 +52,7 @@
 #include "dialogs/podcast_configuration.hpp"
 #include "dialogs/toolbar.hpp"
 #include "dialogs/plugins.hpp"
+#include "dialogs/external.hpp"
 
 #include <QEvent>
 #include <QApplication>
@@ -76,6 +77,8 @@ DialogsProvider::DialogsProvider( intf_thread_t *_p_intf ) :
 
     SDMapper = new QSignalMapper();
     CONNECT( SDMapper, mapped (QString), this, SDMenuAction( QString ) );
+
+    DialogHandler *dialogHandler = new DialogHandler (p_intf, this );
 }
 
 DialogsProvider::~DialogsProvider()

modules/gui/qt4/main_interface.cpp

@@ -206,8 +206,6 @@ MainInterface::MainInterface( intf_thread_t *_p_intf ) : QVLCMW( _p_intf )
 
     /* END CONNECTS ON IM */
 
-    dialogHandler = new DialogHandler (p_intf);
-
     /************
      * Callbacks
      ************/
@@ -284,8 +282,6 @@ MainInterface::~MainInterface()
 {
     msg_Dbg( p_intf, "Destroying the main interface" );
 
-    delete dialogHandler;
-
     /* Unsure we hide the videoWidget before destroying it */
     if( videoIsActive ) videoWidget->hide();
 

modules/gui/qt4/main_interface.hpp

@@ -49,7 +49,6 @@ class FullscreenControllerWidget;
 class SpeedControlWidget;
 class QMenu;
 class QSize;
-class DialogHandler;
 
 enum {
     CONTROLS_VISIBLE = 0x1,
@@ -110,7 +109,6 @@ private:
     ControlsWidget      *controls;
     InputControlsWidget *inputC;
     FullscreenControllerWidget *fullscreenControls;
-    DialogHandler       *dialogHandler;
 
     void createMainWidget( QSettings* );
     void createStatusBar();