preparation for allowing to use wxTimer in wxBase (heavily modified patch 1113088):

1. Changed wxTimer to use wxTimerImpl
2. Added Unix-specific generic timer implementation
3. Added wxAppTraits::CreateTimerImpl()


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@45544 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/private/timer.h

@@ -0,0 +1,73 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        wx/private/timerimpl.h
+// Purpose:     Base class for wxTimer implementations
+// Author:      Lukasz Michalski <lmichalski@sf.net>
+// Created:     31.10.2006
+// RCS-ID:      $Id$
+// Copyright:   (c) 2006-2007 wxWidgets dev team
+// Licence:     wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+#ifndef _WX_TIMERIMPL_H_BASE_
+#define _WX_TIMERIMPL_H_BASE_
+
+#include "wx/defs.h"
+#include "wx/event.h"
+#include "wx/timer.h"
+
+// ----------------------------------------------------------------------------
+// wxTimerImpl: abstract base class for wxTimer implementations
+// ----------------------------------------------------------------------------
+
+class WXDLLIMPEXP_BASE wxTimerImpl
+{
+public:
+    // default ctor, SetOwner() must be called after it (wxTimer does it)
+    wxTimerImpl(wxTimer *owner);
+
+    // this must be called initially but may be also called later
+    void SetOwner(wxEvtHandler *owner, int timerid);
+
+    // empty but virtual base class dtor, the caller is responsible for
+    // stopping the timer before it's destroyed (it can't be done from here as
+    // it's too late)
+    virtual ~wxTimerImpl() { }
+
+
+    // start the timer. When overriding call base version first.
+    virtual bool Start(int milliseconds = -1, bool oneShot = false);
+
+    // stop the timer, only called if the timer is really running (unlike
+    // wxTimer::Stop())
+    virtual void Stop() = 0;
+
+    // return true if the timer is running
+    virtual bool IsRunning() const = 0;
+
+    // this should be called by the port-specific code when the timer expires
+    virtual void Notify() { m_timer->Notify(); }
+
+    // the default implementation of wxTimer::Notify(): generate a wxEVT_TIMER
+    void SendEvent();
+
+
+    // accessors for wxTimer:
+    wxEvtHandler *GetOwner() const { return m_owner; }
+    int GetId() const { return m_idTimer; }
+    int GetInterval() const { return m_milli; }
+    bool IsOneShot() const { return m_oneShot; }
+
+protected:
+    wxTimer *m_timer;
+
+    wxEvtHandler *m_owner;
+
+    int     m_idTimer;      // id passed to wxTimerEvent
+    int     m_milli;        // the timer interval
+    bool    m_oneShot;      // true if one shot
+
+
+    DECLARE_NO_COPY_CLASS(wxTimerImpl);
+};
+
+#endif // _WX_TIMERIMPL_H_BASE_