synchronize GTK2 minimum version in docs

[wxWidgets.git] / include / wx / containr.h

diff --git a/include/wx/containr.h b/include/wx/containr.h
index 34823cfab31c839b280b31835c3912c0ffab301b..d4eb907682fd0b18309322f7ecb99ceaffa77cee 100644 (file)
--- a/include/wx/containr.h
+++ b/include/wx/containr.h
@@ -1,84 +1,94 @@
 ///////////////////////////////////////////////////////////////////////////////
 // Name:        wx/containr.h
 ///////////////////////////////////////////////////////////////////////////////
 // Name:        wx/containr.h

-// Purpose:     wxControlContainer class declration: a "mix-in" class which
-//              implements the TAB navigation between the controls
+// Purpose:     wxControlContainer and wxNavigationEnabled declarations

 // Author:      Vadim Zeitlin
 // Modified by:
 // Created:     06.08.01
 // RCS-ID:      $Id$
 // Author:      Vadim Zeitlin
 // Modified by:
 // Created:     06.08.01
 // RCS-ID:      $Id$

-// Copyright:   (c) 2001 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
+// Copyright:   (c) 2001, 2011 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>

 // Licence:     wxWindows licence
 ///////////////////////////////////////////////////////////////////////////////
 
 #ifndef _WX_CONTAINR_H_
 #define _WX_CONTAINR_H_
 
 // Licence:     wxWindows licence
 ///////////////////////////////////////////////////////////////////////////////
 
 #ifndef _WX_CONTAINR_H_
 #define _WX_CONTAINR_H_
 

-class WXDLLEXPORT wxFocusEvent;
-class WXDLLEXPORT wxNavigationKeyEvent;
-class WXDLLEXPORT wxWindow;
-class WXDLLEXPORT wxWindowBase;
+#include "wx/defs.h"
+
+#ifndef wxHAS_NATIVE_TAB_TRAVERSAL
+    // We need wxEVT_XXX declarations in this case.
+    #include "wx/event.h"
+#endif
+
+class WXDLLIMPEXP_FWD_CORE wxWindow;
+class WXDLLIMPEXP_FWD_CORE wxWindowBase;

 
 /*
 
 /*

-   Implementation note: wxControlContainer is not a real mix-in but rather
-   a class meant to be agregated with (and not inherited from). Although
-   logically it should be a mix-in, doing it like this has no advantage from
-   the point of view of the existing code but does have some problems (we'd
-   need to play tricks with event handlers which may be difficult to do
-   safely). The price we pay for this simplicity is the ugly macros below.
+    This header declares wxControlContainer class however it's not a real
+    container of controls but rather just a helper used to implement TAB
+    navigation among the window children. You should rarely need to use it
+    directly, derive from the documented public wxNavigationEnabled<> class to
+    implement TAB navigation in a custom composite window.

  */
 
 // ----------------------------------------------------------------------------
  */
 
 // ----------------------------------------------------------------------------

-// wxControlContainer
+// wxControlContainerBase: common part used in both native and generic cases

 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------
 

-class WXDLLEXPORT wxControlContainer
+class WXDLLIMPEXP_CORE wxControlContainerBase

 {
 public:
 {
 public:

-    // ctors and such
-    wxControlContainer(wxWindow *winParent = NULL);
-    void SetContainerWindow(wxWindow *winParent) { m_winParent = winParent; }
-
-    // default item access: we have a permanent default item which is the one
-    // set by the user code but we may also have a temporary default item which
-    // would be chosen if the user pressed "Enter" now but the default action
-    // reverts to the "permanent" default as soon as this temporary default
-    // item lsoes focus
-
-    // get the default item, temporary or permanent
-    wxWindow *GetDefaultItem() const
-        { return m_winTmpDefault ? m_winTmpDefault : m_winDefault; }
-
-    // set the permanent default item, return its old value
-    wxWindow *SetDefaultItem(wxWindow *win)
-        { wxWindow *winOld = m_winDefault; m_winDefault = win; return winOld; }
-
-    // set a temporary default item, SetTmpDefaultItem(NULL) should be called
-    // soon after a call to SetTmpDefaultItem(window)
-    void SetTmpDefaultItem(wxWindow *win) { m_winTmpDefault = win; }
+    // default ctor, SetContainerWindow() must be called later
+    wxControlContainerBase()
+    {
+        m_winParent = NULL;

 
 

-    // return the temporary default item, can be NULL
-    wxWindow *GetTmpDefaultItem() const { return m_winTmpDefault; }
+        // do accept focus initially, we'll stop doing it if/when any children
+        // are added
+        m_acceptsFocus = true;
+        m_inSetFocus = false;
+        m_winLastFocused = NULL;
+    }
+    virtual ~wxControlContainerBase() {}

 
 

+    void SetContainerWindow(wxWindow *winParent)
+    {
+        wxASSERT_MSG( !m_winParent, wxT("shouldn't be called twice") );

 
 

-    // the methods to be called from the window event handlers
-    void HandleOnNavigationKey(wxNavigationKeyEvent& event);
-    void HandleOnFocus(wxFocusEvent& event);
-    void HandleOnWindowDestroy(wxWindowBase *child);
+        m_winParent = winParent;
+    }

 
     // should be called from SetFocus(), returns false if we did nothing with
     // the focus and the default processing should take place
     bool DoSetFocus();
 
 
     // should be called from SetFocus(), returns false if we did nothing with
     // the focus and the default processing should take place
     bool DoSetFocus();
 

-    // can our child get the focus?
-    bool AcceptsFocus() const;
+    // should be called when we decide that we should [stop] accepting focus
+    void SetCanFocus(bool acceptsFocus);

 
 

-    // called from OnChildFocus() handler, i.e. when one of our (grand)
-    // children gets the focus
-    void SetLastFocus(wxWindow *win);
+    // returns whether we should accept focus ourselves or not
+    bool AcceptsFocus() const { return m_acceptsFocus; }
+
+    // returns whether we or one of our children accepts focus: we always do
+    // because if we don't have any focusable children it probably means that
+    // we're not being used as a container at all (think of wxGrid or generic
+    // wxListCtrl) and so should get focus for ourselves
+    bool AcceptsFocusRecursively() const { return true; }
+
+    // this is used to determine whether we can accept focus when Tab or
+    // another navigation key is pressed -- we alsways can, for the same reason
+    // as mentioned above for AcceptsFocusRecursively()
+    bool AcceptsFocusFromKeyboard() const { return true; }
+
+    // Call this when the number of children of the window changes.
+    // If we have any children, this panel (used just as container for
+    // them) shouldn't get focus for itself.
+    void UpdateCanFocus() { SetCanFocus(!HasAnyFocusableChildren()); }

 
 protected:
     // set the focus to the child which had it the last time
 
 protected:
     // set the focus to the child which had it the last time

-    bool SetFocusToChild();
+    virtual bool SetFocusToChild();
+
+    // return true if we have any children accepting focus
+    bool HasAnyFocusableChildren() const;

 
     // the parent window we manage the children for
     wxWindow *m_winParent;
 
     // the parent window we manage the children for
     wxWindow *m_winParent;


@@ -86,44 +96,257 @@ protected:
     // the child which had the focus last time this panel was activated
     wxWindow *m_winLastFocused;
 
     // the child which had the focus last time this panel was activated
     wxWindow *m_winLastFocused;
 

-    // a default window (usually a button) or NULL
-    wxWindow *m_winDefault;
-
-    // a temporary override of m_winDefault, use the latter if NULL
-    wxWindow *m_winTmpDefault;
+private:
+    // value returned by AcceptsFocus(), should be changed using SetCanFocus()
+    // only
+    bool m_acceptsFocus;

 
     // a guard against infinite recursion
     bool m_inSetFocus;
 
     // a guard against infinite recursion
     bool m_inSetFocus;

+};
+
+#ifdef wxHAS_NATIVE_TAB_TRAVERSAL
+
+// ----------------------------------------------------------------------------
+// wxControlContainer for native TAB navigation
+// ----------------------------------------------------------------------------

 
 

-    DECLARE_NO_COPY_CLASS(wxControlContainer)
+// this must be a real class as we forward-declare it elsewhere
+class WXDLLIMPEXP_CORE wxControlContainer : public wxControlContainerBase
+{
+protected:
+    // set the focus to the child which had it the last time
+    virtual bool SetFocusToChild();

 };
 
 };
 

+#else // !wxHAS_NATIVE_TAB_TRAVERSAL
+
+// ----------------------------------------------------------------------------
+// wxControlContainer for TAB navigation implemented in wx itself
+// ----------------------------------------------------------------------------
+
+class WXDLLIMPEXP_CORE wxControlContainer : public wxControlContainerBase
+{
+public:
+    // default ctor, SetContainerWindow() must be called later
+    wxControlContainer();
+
+    // the methods to be called from the window event handlers
+    void HandleOnNavigationKey(wxNavigationKeyEvent& event);
+    void HandleOnFocus(wxFocusEvent& event);
+    void HandleOnWindowDestroy(wxWindowBase *child);
+
+    // called from OnChildFocus() handler, i.e. when one of our (grand)
+    // children gets the focus
+    void SetLastFocus(wxWindow *win);
+
+protected:
+
+    wxDECLARE_NO_COPY_CLASS(wxControlContainer);
+};
+
+#endif // wxHAS_NATIVE_TAB_TRAVERSAL/!wxHAS_NATIVE_TAB_TRAVERSAL
+

 // this function is for wxWidgets internal use only
 // this function is for wxWidgets internal use only

-extern bool wxSetFocusToChild(wxWindow *win, wxWindow **child);
+extern WXDLLIMPEXP_CORE bool wxSetFocusToChild(wxWindow *win, wxWindow **child);

 
 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------

-// macros which may be used by the classes wishing to implement TAB navigation
-// among their children
+// wxNavigationEnabled: Derive from this class to support keyboard navigation
+// among window children in a wxWindow-derived class. The details of this class
+// don't matter, you just need to derive from it to make navigation work.

 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------
 

-// declare the methods to be forwarded
-#define WX_DECLARE_CONTROL_CONTAINER() \
-public: \
-    void OnNavigationKey(wxNavigationKeyEvent& event); \
-    void OnFocus(wxFocusEvent& event); \
-    virtual void OnChildFocus(wxChildFocusEvent& event); \
-    virtual void SetFocus(); \
-    virtual void SetFocusIgnoringChildren(); \
-    virtual void RemoveChild(wxWindowBase *child); \
-    virtual wxWindow *GetDefaultItem() const; \
-    virtual wxWindow *SetDefaultItem(wxWindow *child); \
-    virtual void SetTmpDefaultItem(wxWindow *win); \
-    virtual wxWindow *GetTmpDefaultItem() const; \
-    virtual bool AcceptsFocus() const; \
-\
-protected: \
+// The template parameter W must be a wxWindow-derived class.
+template <class W>
+class wxNavigationEnabled : public W
+{
+public:
+    typedef W BaseWindowClass;
+
+    wxNavigationEnabled()
+    {
+        m_container.SetContainerWindow(this);
+
+#ifndef wxHAS_NATIVE_TAB_TRAVERSAL
+        BaseWindowClass::Connect(wxEVT_NAVIGATION_KEY,
+                wxNavigationKeyEventHandler(wxNavigationEnabled::OnNavigationKey));
+
+        BaseWindowClass::Connect(wxEVT_SET_FOCUS,
+                wxFocusEventHandler(wxNavigationEnabled::OnFocus));
+
+        BaseWindowClass::Connect(wxEVT_CHILD_FOCUS,
+                wxChildFocusEventHandler(wxNavigationEnabled::OnChildFocus));
+#endif // !wxHAS_NATIVE_TAB_TRAVERSAL
+    }
+
+    WXDLLIMPEXP_INLINE_CORE virtual bool AcceptsFocus() const
+    {
+        return m_container.AcceptsFocus();
+    }
+
+    WXDLLIMPEXP_INLINE_CORE virtual bool AcceptsFocusRecursively() const
+    {
+        return m_container.AcceptsFocusRecursively();
+    }
+
+    WXDLLIMPEXP_INLINE_CORE virtual bool AcceptsFocusFromKeyboard() const
+    {
+        return m_container.AcceptsFocusFromKeyboard();
+    }
+
+    WXDLLIMPEXP_INLINE_CORE virtual void AddChild(wxWindowBase *child)
+    {
+        BaseWindowClass::AddChild(child);
+
+        m_container.UpdateCanFocus();
+    }
+
+    WXDLLIMPEXP_INLINE_CORE virtual void RemoveChild(wxWindowBase *child)
+    {
+#ifndef wxHAS_NATIVE_TAB_TRAVERSAL
+        m_container.HandleOnWindowDestroy(child);
+#endif // !wxHAS_NATIVE_TAB_TRAVERSAL
+
+        BaseWindowClass::RemoveChild(child);
+
+        m_container.UpdateCanFocus();
+    }
+
+    WXDLLIMPEXP_INLINE_CORE virtual void SetFocus()
+    {
+        if ( !m_container.DoSetFocus() )
+            BaseWindowClass::SetFocus();
+    }
+
+    void SetFocusIgnoringChildren()
+    {
+        BaseWindowClass::SetFocus();
+    }
+
+    void AcceptFocus(bool acceptFocus)
+    {
+        m_container.SetCanFocus(acceptFocus);
+    }
+
+protected:
+#ifndef wxHAS_NATIVE_TAB_TRAVERSAL
+    void OnNavigationKey(wxNavigationKeyEvent& event)
+    {
+        m_container.HandleOnNavigationKey(event);
+    }
+
+    void OnFocus(wxFocusEvent& event)
+    {
+        m_container.HandleOnFocus(event);
+    }
+
+    void OnChildFocus(wxChildFocusEvent& event)
+    {
+        m_container.SetLastFocus(event.GetWindow());
+        event.Skip();
+    }
+#endif // !wxHAS_NATIVE_TAB_TRAVERSAL
+
+    wxControlContainer m_container;
+
+
+    wxDECLARE_NO_COPY_TEMPLATE_CLASS(wxNavigationEnabled, W);
+};
+
+// ----------------------------------------------------------------------------
+// Compatibility macros from now on, do NOT use them and preferably do not even
+// look at them.
+// ----------------------------------------------------------------------------
+
+#if WXWIN_COMPATIBILITY_2_8
+
+// common part of WX_DECLARE_CONTROL_CONTAINER in the native and generic cases,
+// it should be used in the wxWindow-derived class declaration
+#define WX_DECLARE_CONTROL_CONTAINER_BASE()                                   \
+public:                                                                       \
+    virtual bool AcceptsFocus() const;                                        \
+    virtual bool AcceptsFocusRecursively() const;                             \
+    virtual bool AcceptsFocusFromKeyboard() const;                            \
+    virtual void AddChild(wxWindowBase *child);                               \
+    virtual void RemoveChild(wxWindowBase *child);                            \
+    virtual void SetFocus();                                                  \
+    void SetFocusIgnoringChildren();                                          \
+    void AcceptFocus(bool acceptFocus)                                        \
+    {                                                                         \
+        m_container.SetCanFocus(acceptFocus);                                 \
+    }                                                                         \
+                                                                              \
+protected:                                                                    \

     wxControlContainer m_container
 
     wxControlContainer m_container
 

+// this macro must be used in the derived class ctor
+#define WX_INIT_CONTROL_CONTAINER() \
+    m_container.SetContainerWindow(this)
+
+// common part of WX_DELEGATE_TO_CONTROL_CONTAINER in the native and generic
+// cases, must be used in the wxWindow-derived class implementation
+#define WX_DELEGATE_TO_CONTROL_CONTAINER_BASE(classname, basename)            \
+    void classname::AddChild(wxWindowBase *child)                             \
+    {                                                                         \
+        basename::AddChild(child);                                            \
+                                                                              \
+        m_container.UpdateCanFocus();                                         \
+    }                                                                         \
+                                                                              \
+    bool classname::AcceptsFocusRecursively() const                           \
+    {                                                                         \
+        return m_container.AcceptsFocusRecursively();                         \
+    }                                                                         \
+                                                                              \
+    void classname::SetFocus()                                                \
+    {                                                                         \
+        if ( !m_container.DoSetFocus() )                                      \
+            basename::SetFocus();                                             \
+    }                                                                         \
+                                                                              \
+    bool classname::AcceptsFocus() const                                      \
+    {                                                                         \
+        return m_container.AcceptsFocus();                                    \
+    }                                                                         \
+                                                                              \
+    bool classname::AcceptsFocusFromKeyboard() const                          \
+    {                                                                         \
+        return m_container.AcceptsFocusFromKeyboard();                        \
+    }
+
+
+#ifdef wxHAS_NATIVE_TAB_TRAVERSAL
+
+#define WX_EVENT_TABLE_CONTROL_CONTAINER(classname)
+
+#define WX_DECLARE_CONTROL_CONTAINER WX_DECLARE_CONTROL_CONTAINER_BASE
+
+#define WX_DELEGATE_TO_CONTROL_CONTAINER(classname, basename)                 \
+    WX_DELEGATE_TO_CONTROL_CONTAINER_BASE(classname, basename)                \
+                                                                              \
+    void classname::RemoveChild(wxWindowBase *child)                          \
+    {                                                                         \
+        basename::RemoveChild(child);                                         \
+                                                                              \
+        m_container.UpdateCanFocus();                                         \
+    }                                                                         \
+                                                                              \
+    void classname::SetFocusIgnoringChildren()                                \
+    {                                                                         \
+        basename::SetFocus();                                                 \
+    }
+
+#else // !wxHAS_NATIVE_TAB_TRAVERSAL
+
+// declare the methods to be forwarded
+#define WX_DECLARE_CONTROL_CONTAINER()                                        \
+    WX_DECLARE_CONTROL_CONTAINER_BASE();                                      \
+                                                                              \
+public:                                                                       \
+    void OnNavigationKey(wxNavigationKeyEvent& event);                        \
+    void OnFocus(wxFocusEvent& event);                                        \
+    virtual void OnChildFocus(wxChildFocusEvent& event)
+

 // implement the event table entries for wxControlContainer
 #define WX_EVENT_TABLE_CONTROL_CONTAINER(classname) \
     EVT_SET_FOCUS(classname::OnFocus) \
 // implement the event table entries for wxControlContainer
 #define WX_EVENT_TABLE_CONTROL_CONTAINER(classname) \
     EVT_SET_FOCUS(classname::OnFocus) \


@@ -131,63 +354,41 @@ protected: \
     EVT_NAVIGATION_KEY(classname::OnNavigationKey)
 
 // implement the methods forwarding to the wxControlContainer
     EVT_NAVIGATION_KEY(classname::OnNavigationKey)
 
 // implement the methods forwarding to the wxControlContainer

-#define WX_DELEGATE_TO_CONTROL_CONTAINER(classname)  \
-wxWindow *classname::SetDefaultItem(wxWindow *child) \
-{ \
-    return m_container.SetDefaultItem(child); \
-} \
- \
-void classname::SetTmpDefaultItem(wxWindow *child) \
-{ \
-    m_container.SetTmpDefaultItem(child); \
-} \
- \
-wxWindow *classname::GetDefaultItem() const \
-{ \
-    return m_container.GetDefaultItem(); \
-} \
- \
-wxWindow *classname::GetTmpDefaultItem() const \
-{ \
-    return m_container.GetTmpDefaultItem(); \
-} \
- \
-void classname::OnNavigationKey( wxNavigationKeyEvent& event ) \
-{ \
-    m_container.HandleOnNavigationKey(event); \
-} \
- \
-void classname::RemoveChild(wxWindowBase *child) \
-{ \
-    m_container.HandleOnWindowDestroy(child); \
- \
-    wxWindow::RemoveChild(child); \
-} \
- \
-void classname::SetFocus() \
-{ \
-    if ( !m_container.DoSetFocus() ) \
-        wxWindow::SetFocus(); \
-} \
- \
-void classname::SetFocusIgnoringChildren() \
-{ \
-        wxWindow::SetFocus(); \
-} \
- \
-void classname::OnChildFocus(wxChildFocusEvent& event) \
-{ \
-    m_container.SetLastFocus(event.GetWindow()); \
-} \
- \
-void classname::OnFocus(wxFocusEvent& event) \
-{ \
-    m_container.HandleOnFocus(event); \
-} \
-bool classname::AcceptsFocus() const \
-{ \
-    return m_container.AcceptsFocus(); \
-}
+#define WX_DELEGATE_TO_CONTROL_CONTAINER(classname, basename)                 \
+    WX_DELEGATE_TO_CONTROL_CONTAINER_BASE(classname, basename)                \
+                                                                              \
+    void classname::RemoveChild(wxWindowBase *child)                          \
+    {                                                                         \
+        m_container.HandleOnWindowDestroy(child);                             \
+                                                                              \
+        basename::RemoveChild(child);                                         \
+                                                                              \
+        m_container.UpdateCanFocus();                                         \
+    }                                                                         \
+                                                                              \
+    void classname::OnNavigationKey( wxNavigationKeyEvent& event )            \
+    {                                                                         \
+        m_container.HandleOnNavigationKey(event);                             \
+    }                                                                         \
+                                                                              \
+    void classname::SetFocusIgnoringChildren()                                \
+    {                                                                         \
+        basename::SetFocus();                                                 \
+    }                                                                         \
+                                                                              \
+    void classname::OnChildFocus(wxChildFocusEvent& event)                    \
+    {                                                                         \
+        m_container.SetLastFocus(event.GetWindow());                          \
+        event.Skip();                                                         \
+    }                                                                         \
+                                                                              \
+    void classname::OnFocus(wxFocusEvent& event)                              \
+    {                                                                         \
+        m_container.HandleOnFocus(event);                                     \
+    }
+
+#endif // wxHAS_NATIVE_TAB_TRAVERSAL/!wxHAS_NATIVE_TAB_TRAVERSAL

 
 

+#endif // WXWIN_COMPATIBILITY_2_8

 
 #endif // _WX_CONTAINR_H_
 
 #endif // _WX_CONTAINR_H_