disinherit OWizardPage and SfxTabPage from vcl TabPage

Now that there's no need to support weld/unwelded mixes of
pages in dialog any more.

inherit from a BuilderPage which contains a Builder and
Toplevel container

BuilderPage Activate and Deactivate replace TabPage ActivatePage and
DeactivatePage, allowing disambiguation wrt SfxTabPage ActivatePage and
DeactivatePage.

Change-Id: I5706e50fd92f712a25328ee9791e054bb9ad9812
Reviewed-on: https://gerrit.libreoffice.org/79317
Tested-by: Jenkins
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

14 files changed, 93 insertions, 71 deletions

diff --git a/include/sfx2/basedlgs.hxx b/include/sfx2/basedlgs.hxx
index 948b52f94d5a..c01d6bd72b73 100644
--- a/include/sfx2/basedlgs.hxx
+++ b/include/sfx2/basedlgs.hxx
@@ -182,7 +182,7 @@ public:
 
     virtual             ~SfxSingleTabDialogController() override;
 
-    void                SetTabPage(SfxTabPage* pTabPage);
+    void                SetTabPage(std::unique_ptr<SfxTabPage> xTabPage);
     SfxTabPage*         GetTabPage() const { return m_xSfxPage.get(); }
 
     virtual weld::Button& GetOKButton() const override { return *m_xOKBtn; }
@@ -192,7 +192,7 @@ public:
     const SfxItemSet*   GetInputItemSet() const { return m_pInputSet; }
 
 protected:
-    VclPtr<SfxTabPage> m_xSfxPage;
+    std::unique_ptr<SfxTabPage> m_xSfxPage;
     std::unique_ptr<weld::Container> m_xContainer;
     std::unique_ptr<weld::Button> m_xOKBtn;
     std::unique_ptr<weld::Button> m_xHelpBtn;
diff --git a/include/sfx2/dinfdlg.hxx b/include/sfx2/dinfdlg.hxx
index 87f83f339416..caa618f0466f 100644
--- a/include/sfx2/dinfdlg.hxx
+++ b/include/sfx2/dinfdlg.hxx
@@ -200,14 +200,13 @@ private:
     void                ImplCheckPasswordState();
 
 protected:
-    virtual ~SfxDocumentPage() override;
-
     virtual bool        FillItemSet( SfxItemSet* ) override;
     virtual void        Reset( const SfxItemSet* ) override;
 
 public:
     SfxDocumentPage(TabPageParent pParent, const SfxItemSet&);
-    static VclPtr<SfxTabPage> Create( TabPageParent pParent, const SfxItemSet* );
+    static std::unique_ptr<SfxTabPage> Create( TabPageParent pParent, const SfxItemSet* );
+    virtual ~SfxDocumentPage() override;
 
     void                EnableUseUserData();
 };
@@ -224,14 +223,13 @@ private:
     std::unique_ptr<weld::TextView> m_xCommentEd;
 
 protected:
-    virtual ~SfxDocumentDescPage() override;
-
     virtual bool            FillItemSet( SfxItemSet* ) override;
     virtual void            Reset( const SfxItemSet* ) override;
 
 public:
     SfxDocumentDescPage(TabPageParent pParent, const SfxItemSet&);
-    static VclPtr<SfxTabPage> Create( TabPageParent pParent, const SfxItemSet* );
+    virtual ~SfxDocumentDescPage() override;
+    static std::unique_ptr<SfxTabPage> Create( TabPageParent pParent, const SfxItemSet* );
 };
 
 // class SfxDocumentInfoDialog -------------------------------------------
@@ -447,22 +445,18 @@ class SfxCustomPropertiesPage : public SfxTabPage
 private:
     DECL_LINK(AddHdl, weld::Button&, void);
 
-    using TabPage::DeactivatePage;
-
     std::unique_ptr<CustomPropertiesControl> m_xPropertiesCtrl;
     std::unique_ptr<weld::Button> m_xAdd;
 
 protected:
-    virtual ~SfxCustomPropertiesPage() override;
-    virtual void dispose() override;
-
     virtual bool        FillItemSet( SfxItemSet* ) override;
     virtual void        Reset( const SfxItemSet* ) override;
     virtual DeactivateRC DeactivatePage( SfxItemSet* pSet ) override;
 
 public:
     SfxCustomPropertiesPage(TabPageParent pParent, const SfxItemSet&);
-    static VclPtr<SfxTabPage> Create( TabPageParent pParent, const SfxItemSet* );
+    static std::unique_ptr<SfxTabPage> Create( TabPageParent pParent, const SfxItemSet* );
+    virtual ~SfxCustomPropertiesPage() override;
 };
 
 struct CmisValue
@@ -569,7 +563,6 @@ class SfxCmisPropertiesPage : public SfxTabPage
 {
 private:
     std::unique_ptr<CmisPropertiesControl> m_xPropertiesCtrl;
-    using TabPage::DeactivatePage;
 
 protected:
     virtual bool        FillItemSet( SfxItemSet* ) override;
@@ -578,9 +571,8 @@ protected:
 
 public:
     SfxCmisPropertiesPage(TabPageParent pParent, const SfxItemSet&);
-    virtual void dispose() override;
     virtual ~SfxCmisPropertiesPage() override;
-    static VclPtr<SfxTabPage> Create( TabPageParent pParent, const SfxItemSet* );
+    static std::unique_ptr<SfxTabPage> Create(TabPageParent pParent, const SfxItemSet*);
 };
 
 #endif // #ifndef _ INCLUDED_SFX2_DINFDLG_HXX
diff --git a/include/sfx2/mgetempl.hxx b/include/sfx2/mgetempl.hxx
index 86764728d8de..1f40b35bb958 100644
--- a/include/sfx2/mgetempl.hxx
+++ b/include/sfx2/mgetempl.hxx
@@ -62,7 +62,7 @@ class SfxManageStyleSheetPage final : public SfxTabPage
     std::unique_ptr<weld::Label> m_xDescFt;
     std::unique_ptr<weld::Label> m_xNameFt;
 
-friend class SfxStyleDialogController;
+    friend class SfxStyleDialogController;
 
     DECL_LINK(GetFocusHdl, weld::Widget&, void);
     DECL_LINK(LoseFocusHdl, weld::Widget&, void);
@@ -74,22 +74,19 @@ friend class SfxStyleDialogController;
     void    UpdateName_Impl(weld::ComboBox*, const OUString &rNew);
     void    SetDescriptionText_Impl();
 
-    virtual ~SfxManageStyleSheetPage() override;
-    virtual void dispose() override;
 
-    static VclPtr<SfxTabPage> Create( TabPageParent pParent, const SfxItemSet* );
+    static std::unique_ptr<SfxTabPage> Create( TabPageParent pParent, const SfxItemSet* );
 
     virtual bool        FillItemSet(SfxItemSet *) override;
     virtual void        Reset(const SfxItemSet *) override;
 
     static bool    Execute_Impl( sal_uInt16 nId, const OUString& rStr, sal_uInt16 nFamily );
-    using TabPage::ActivatePage;
     virtual void        ActivatePage(const SfxItemSet &) override;
-    using TabPage::DeactivatePage;
     virtual DeactivateRC DeactivatePage(SfxItemSet *) override;
 
 public:
     SfxManageStyleSheetPage(TabPageParent pParent, const SfxItemSet &rAttrSet);
+    virtual ~SfxManageStyleSheetPage() override;
 };
 
 #endif
diff --git a/include/sfx2/module.hxx b/include/sfx2/module.hxx
index c4ad3d89aebf..78d159d75236 100644
--- a/include/sfx2/module.hxx
+++ b/include/sfx2/module.hxx
@@ -73,7 +73,7 @@ public:
     void                        RegisterChildWindow(std::unique_ptr<SfxChildWinFactory>);
     void                        RegisterStatusBarControl(const SfxStbCtrlFactory&);
 
-    virtual VclPtr<SfxTabPage>  CreateTabPage( sal_uInt16 nId,
+    virtual std::unique_ptr<SfxTabPage>  CreateTabPage( sal_uInt16 nId,
                                                TabPageParent pParent,
                                                const SfxItemSet& rSet );
     virtual void                Invalidate(sal_uInt16 nId = 0) override;
diff --git a/include/sfx2/printopt.hxx b/include/sfx2/printopt.hxx
index a30fba19b292..c6b47b88a1ea 100644
--- a/include/sfx2/printopt.hxx
+++ b/include/sfx2/printopt.hxx
@@ -72,7 +72,6 @@ private:
 
 protected:
 
-    using TabPage::DeactivatePage;
     virtual DeactivateRC DeactivatePage( SfxItemSet* pSet ) override;
 
 public:
@@ -82,7 +81,7 @@ public:
     virtual bool        FillItemSet( SfxItemSet* rSet ) override;
     virtual void        Reset( const SfxItemSet* rSet ) override;
 
-    static VclPtr<SfxTabPage> Create( TabPageParent pParent, const SfxItemSet* );
+    static std::unique_ptr<SfxTabPage> Create( TabPageParent pParent, const SfxItemSet* );
 };
 
 #endif // INCLUDED_SFX2_PRINTOPT_HXX
diff --git a/include/sfx2/prnmon.hxx b/include/sfx2/prnmon.hxx
index 5e877532ef43..298aeac049ac 100644
--- a/include/sfx2/prnmon.hxx
+++ b/include/sfx2/prnmon.hxx
@@ -36,9 +36,9 @@ class SfxPrintOptionsDialog : public weld::GenericDialogController
 private:
     std::unique_ptr<SfxPrintOptDlg_Impl>   pDlgImpl;
     std::unique_ptr<SfxItemSet>            pOptions;
-    VclPtr<SfxTabPage>      pPage;
     std::unique_ptr<weld::Widget>    m_xHelpBtn;
     std::unique_ptr<weld::Container> m_xContainer;
+    std::unique_ptr<SfxTabPage> m_xPage;
 
     DECL_LINK(HelpRequestHdl, weld::Widget&, bool);
 public:
diff --git a/include/sfx2/securitypage.hxx b/include/sfx2/securitypage.hxx
index deb7fe6d8f8c..14478eaf063c 100644
--- a/include/sfx2/securitypage.hxx
+++ b/include/sfx2/securitypage.hxx
@@ -34,7 +34,7 @@ protected:
 
 public:
     SfxSecurityPage(TabPageParent pParent, const SfxItemSet&);
-    static VclPtr<SfxTabPage> Create(TabPageParent pParent, const SfxItemSet*);
+    static std::unique_ptr<SfxTabPage> Create(TabPageParent pParent, const SfxItemSet*);
     weld::Builder& GetBuilder() const { return *m_xBuilder; }
 };
 
diff --git a/include/sfx2/tabdlg.hxx b/include/sfx2/tabdlg.hxx
index f8a0f99d0e5b..1ff48d364bfe 100644
--- a/include/sfx2/tabdlg.hxx
+++ b/include/sfx2/tabdlg.hxx
@@ -24,6 +24,7 @@
 #include <sfx2/dllapi.h>
 #include <sfx2/basedlgs.hxx>
 #include <sal/types.h>
+#include <vcl/builderpage.hxx>
 #include <vcl/tabpage.hxx>
 #include <svl/itempool.hxx>
 #include <svl/itemset.hxx>
@@ -31,7 +32,7 @@
 
 class SfxTabPage;
 
-typedef VclPtr<SfxTabPage> (*CreateTabPage)(TabPageParent pParent, const SfxItemSet *rAttrSet);
+typedef std::unique_ptr<SfxTabPage> (*CreateTabPage)(TabPageParent pParent, const SfxItemSet *rAttrSet);
 typedef const sal_uInt16*     (*GetTabPageRanges)(); // provides international Which-value
 struct TabPageImpl;
 
@@ -162,7 +163,7 @@ namespace o3tl {
     template<> struct typed_flags<DeactivateRC> : is_typed_flags<DeactivateRC, 0x03> {};
 }
 
-class SFX2_DLLPUBLIC SfxTabPage: public TabPage
+class SFX2_DLLPUBLIC SfxTabPage : public BuilderPage
 {
 friend class SfxTabDialog;
 friend class SfxTabDialogController;
@@ -174,10 +175,6 @@ private:
     std::unique_ptr< TabPageImpl >        pImpl;
 
 protected:
-    std::unique_ptr<weld::Builder> m_xBuilder;
-    std::unique_ptr<weld::Container> m_xContainer;
-
-protected:
     SfxTabPage(TabPageParent pParent, const OUString& rUIXMLDescription, const OString& rID, const SfxItemSet *rAttrSet);
 
     sal_uInt16          GetWhich( sal_uInt16 nSlot, bool bDeep = true ) const
@@ -193,12 +190,10 @@ public:
     void                SetDialogController(SfxOkDialogController* pDialog);
 public:
     virtual             ~SfxTabPage() override;
-    virtual void        dispose() override;
 
     void set_visible(bool bVisible)
     {
         m_xContainer->set_visible(bVisible);
-        Show(bVisible);
     }
 
     const SfxItemSet&   GetItemSet() const { return *pSet; }
@@ -211,8 +206,6 @@ public:
     void                SetExchangeSupport()
                             { bHasExchangeSupport = true; }
 
-        using TabPage::ActivatePage;
-        using TabPage::DeactivatePage;
     virtual void            ActivatePage( const SfxItemSet& );
     virtual DeactivateRC    DeactivatePage( SfxItemSet* pSet );
     void                    SetUserData(const OUString& rString)
@@ -233,7 +226,9 @@ public:
 
     const SfxItemSet* GetDialogExampleSet() const;
 
-    OString         GetConfigId() const;
+    OString         GetHelpId() const;
+    OString         GetConfigId() const { return GetHelpId(); }
+    bool            IsVisible() const { return m_xContainer->get_visible(); }
 
     //TODO rename to GetFrameWeld when SfxTabPage doesn't inherit from anything
     weld::Window*   GetDialogFrameWeld() const;
diff --git a/include/sfx2/viewsh.hxx b/include/sfx2/viewsh.hxx
index 9d3312b2fa60..0463c3a1eaa5 100644
--- a/include/sfx2/viewsh.hxx
+++ b/include/sfx2/viewsh.hxx
@@ -237,7 +237,7 @@ public:
     virtual SfxPrinter*         GetPrinter( bool bCreate = false );
     virtual sal_uInt16          SetPrinter( SfxPrinter *pNewPrinter, SfxPrinterChangeFlags nDiffFlags = SFX_PRINTER_ALL );
     virtual bool                HasPrintOptionsPage() const;
-    virtual VclPtr<SfxTabPage>  CreatePrintOptionsPage(TabPageParent pParent, const SfxItemSet &rOptions);
+    virtual std::unique_ptr<SfxTabPage>  CreatePrintOptionsPage(TabPageParent pParent, const SfxItemSet &rOptions);
     Printer*                    GetActivePrinter() const;
 
     // Working set
diff --git a/include/svx/dlgctrl.hxx b/include/svx/dlgctrl.hxx
index 3f31a827a35b..f2053d4b9c09 100644
--- a/include/svx/dlgctrl.hxx
+++ b/include/svx/dlgctrl.hxx
@@ -74,7 +74,7 @@ class SvxPixelCtlAccessible;
 class SAL_WARN_UNUSED SVX_DLLPUBLIC SvxRectCtl : public weld::CustomWidgetController
 {
 private:
-    VclPtr<SvxTabPage> m_pPage;
+    SvxTabPage* m_pPage;
 
     SVX_DLLPRIVATE static void      InitSettings(vcl::RenderContext& rRenderContext);
     SVX_DLLPRIVATE void             InitRectBitmap();
@@ -148,7 +148,7 @@ private:
     static sal_uInt16 constexpr nLines = 8;
     static sal_uInt16 constexpr nSquares = nLines * nLines;
 
-    VclPtr<SvxTabPage> m_pPage;
+    SvxTabPage* m_pPage;
 
     Color       aPixelColor;
     Color       aBackgroundColor;
diff --git a/include/svx/hdft.hxx b/include/svx/hdft.hxx
index a062476931a5..177323136b34 100644
--- a/include/svx/hdft.hxx
+++ b/include/svx/hdft.hxx
@@ -36,9 +36,6 @@ namespace svx
 
 class SVX_DLLPUBLIC SvxHFPage : public SfxTabPage
 {
-    using TabPage::ActivatePage;
-    using TabPage::DeactivatePage;
-
 public:
 
     virtual bool    FillItemSet( SfxItemSet* rOutSet ) override;
@@ -98,7 +95,7 @@ private:
 class SVX_DLLPUBLIC SvxHeaderPage : public SvxHFPage
 {
 public:
-    static VclPtr<SfxTabPage> Create( TabPageParent pParent, const SfxItemSet* rSet );
+    static std::unique_ptr<SfxTabPage> Create( TabPageParent pParent, const SfxItemSet* rSet );
     // returns the Which values to the range
     static const sal_uInt16*  GetRanges() { return pRanges; }
     SVX_DLLPRIVATE SvxHeaderPage(TabPageParent pParent, const SfxItemSet& rSet);
@@ -107,7 +104,7 @@ public:
 class SVX_DLLPUBLIC SvxFooterPage : public SvxHFPage
 {
 public:
-    static VclPtr<SfxTabPage> Create( TabPageParent pParent, const SfxItemSet* rSet );
+    static std::unique_ptr<SfxTabPage> Create( TabPageParent pParent, const SfxItemSet* rSet );
     static const sal_uInt16*  GetRanges() { return pRanges; }
     SVX_DLLPRIVATE SvxFooterPage(TabPageParent pParent, const SfxItemSet& rSet);
 };
diff --git a/include/svx/optgrid.hxx b/include/svx/optgrid.hxx
index df86d3240391..5339bfd55ef3 100644
--- a/include/svx/optgrid.hxx
+++ b/include/svx/optgrid.hxx
@@ -88,14 +88,11 @@ public:
 
 class SVX_DLLPUBLIC SvxGridTabPage : public SfxTabPage
 {
-    using TabPage::ActivatePage;
-    using TabPage::DeactivatePage;
-
 public:
     SvxGridTabPage(TabPageParent pParent, const SfxItemSet& rSet);
     virtual ~SvxGridTabPage() override;
 
-    static VclPtr<SfxTabPage> Create(TabPageParent pParent, const SfxItemSet& rAttrSet);
+    static std::unique_ptr<SfxTabPage> Create(TabPageParent pParent, const SfxItemSet& rAttrSet);
 
     virtual bool        FillItemSet( SfxItemSet* rSet ) override;
     virtual void        Reset( const SfxItemSet* rSet ) override;
diff --git a/include/vcl/builderpage.hxx b/include/vcl/builderpage.hxx
new file mode 100644
index 000000000000..c29cc1a7b079
--- /dev/null
+++ b/include/vcl/builderpage.hxx
@@ -0,0 +1,51 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#ifndef INCLUDED_VCL_BUILDERPAGE_HXX
+#define INCLUDED_VCL_BUILDERPAGE_HXX
+
+#include <vcl/weld.hxx>
+
+class VCL_DLLPUBLIC BuilderPage
+{
+public:
+    BuilderPage(weld::Widget* pParent, weld::DialogController* pController,
+                const OUString& rUIXMLDescription, const OString& rID);
+    virtual ~BuilderPage();
+
+    /* The title of the page, in an Assistant the dialog may append this page title to the
+       dialog title.
+
+       While in a Dialog hosting a single Page it may use the title as
+       the dialog title.
+    */
+    void SetPageTitle(const OUString& rPageTitle) { m_aPageTitle = rPageTitle; }
+    const OUString& GetPageTitle() const { return m_aPageTitle; }
+
+    // In a Notebook or Assistant the controller typically calls Activate on entering
+    // this page, and Deactivate on leaving
+    virtual void Activate();
+    virtual void Deactivate();
+
+    OString GetHelpId() const { return m_xContainer->get_help_id(); }
+
+    weld::DialogController* GetController() const { return m_pDialogController; }
+
+protected:
+    weld::DialogController* m_pDialogController;
+    std::unique_ptr<weld::Builder> m_xBuilder;
+    std::unique_ptr<weld::Container> m_xContainer;
+
+private:
+    OUString m_aPageTitle;
+};
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/include/vcl/wizardmachine.hxx b/include/vcl/wizardmachine.hxx
index 0ca764ce97bf..88788fdc549c 100644
--- a/include/vcl/wizardmachine.hxx
+++ b/include/vcl/wizardmachine.hxx
@@ -21,8 +21,7 @@
 
 #include <memory>
 #include <vcl/dllapi.h>
-#include <vcl/button.hxx>
-#include <vcl/dialog.hxx>
+#include <vcl/builderpage.hxx>
 #include <vcl/idle.hxx>
 #include <vcl/tabpage.hxx>
 
@@ -31,7 +30,7 @@ namespace weld {
     class Container;
 }
 
-struct ImplWizPageData;
+struct WizPageData;
 struct ImplWizButtonData;
 
 // wizard states
@@ -79,11 +78,10 @@ namespace vcl
     };
 
     //= OWizardPage
-    class VCL_DLLPUBLIC OWizardPage : public TabPage, public IWizardPageController
+    class VCL_DLLPUBLIC OWizardPage : public BuilderPage, public IWizardPageController
     {
     public:
         OWizardPage(TabPageParent pParent, const OUString& rUIXMLDescription, const OString& rID);
-        virtual void dispose() override;
         virtual ~OWizardPage() override;
 
         // IWizardPageController overridables
@@ -92,11 +90,8 @@ namespace vcl
         virtual bool        canAdvance() const override;
 
     protected:
-        std::unique_ptr<weld::Builder> m_xBuilder;
-        std::unique_ptr<weld::Container> m_xContainer;
-
-        // TabPage overridables
-        virtual void        ActivatePage() override;
+        // BuilderPage overridables
+        virtual void        Activate() override;
 
         /** updates the travel-related UI elements of the OWizardMachine we live in (if any)
 
@@ -126,10 +121,10 @@ namespace vcl
     class VCL_DLLPUBLIC WizardMachine : public weld::AssistantController
     {
     private:
-        VclPtr<TabPage> m_xCurTabPage;
+        BuilderPage* m_pCurTabPage;
 
         WizardTypes::WizardState m_nCurState;
-        ImplWizPageData* m_pFirstPage;
+        WizPageData* m_pFirstPage;
 
     protected:
         std::unique_ptr<weld::Button> m_xFinish;
@@ -152,10 +147,10 @@ namespace vcl
         bool ShowNextPage();
         bool ShowPrevPage();
 
-        void                AddPage( TabPage* pPage );
-        void                RemovePage( TabPage* pPage );
-        void                SetPage( WizardTypes::WizardState nLevel, TabPage* pPage );
-        TabPage*            GetPage( WizardTypes::WizardState eState ) const;
+        void                AddPage( std::unique_ptr<BuilderPage> xPage );
+        void                RemovePage( BuilderPage* pPage );
+        void                SetPage( WizardTypes::WizardState nLevel, std::unique_ptr<BuilderPage> xPage );
+        BuilderPage*        GetPage( WizardTypes::WizardState eState ) const;
 
         /// enable (or disable) buttons
         void                enableButtons(WizardButtonFlags _nWizardButtonFlags, bool _bEnable);
@@ -185,7 +180,7 @@ namespace vcl
         // our own overridables
 
         /// to override to create new pages
-        virtual VclPtr<TabPage> createPage(WizardTypes::WizardState _nState) = 0;
+        virtual std::unique_ptr<BuilderPage> createPage(WizardTypes::WizardState _nState) = 0;
 
         /// will be called when a new page is about to be displayed
         virtual void        enterState(WizardTypes::WizardState _nState);
@@ -303,8 +298,7 @@ namespace vcl
         */
         WizardTypes::WizardState getCurrentState() const { return m_nCurState; }
 
-        virtual IWizardPageController*
-                                getPageController( TabPage* _pCurrentPage ) const;
+        virtual IWizardPageController* getPageController(BuilderPage* pCurrentPage) const;
 
         /** retrieves a copy of the state history, i.e. all states we already visited
         */
@@ -323,7 +317,7 @@ namespace vcl
         bool                   isTravelingSuspended() const;
 
     protected:
-        TabPage* GetOrCreatePage(const WizardTypes::WizardState i_nState);
+        BuilderPage* GetOrCreatePage(const WizardTypes::WizardState i_nState);
 
     private:
         DECL_DLLPRIVATE_LINK(OnNextPage, weld::Button&, void);