added wxNotificationMessage and implemented it generically and natively for Maemo

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@50205 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/generic/notifmsgg.cpp

@@ -0,0 +1,211 @@
+///////////////////////////////////////////////////////////////////////////////
+// Name:        src/generic/notifmsgg.cpp
+// Purpose:     generic implementation of wxNotificationMessage
+// Author:      Vadim Zeitlin
+// Created:     2007-11-24
+// RCS-ID:      $Id$
+// Copyright:   (c) 2007 Vadim Zeitlin <vadim@wxwindows.org>
+// Licence:     wxWindows licence
+///////////////////////////////////////////////////////////////////////////////
+
+// ============================================================================
+// declarations
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
+
+// for compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
+
+#ifdef __BORLANDC__
+    #pragma hdrstop
+#endif
+
+// include this before the test below, wxUSE_GENERIC_NOTIFICATION_MESSAGE is
+// defined in this header
+#include "wx/notifmsg.h"
+
+#if wxUSE_GENERIC_NOTIFICATION_MESSAGE
+
+#ifndef WX_PRECOMP
+    #include "wx/dialog.h"
+    #include "wx/timer.h"
+#endif //WX_PRECOMP
+
+// ----------------------------------------------------------------------------
+// wxNotificationMessageDialog
+// ----------------------------------------------------------------------------
+
+class wxNotificationMessageDialog : public wxDialog
+{
+public:
+    wxNotificationMessageDialog(wxWindow *parent,
+                                const wxString& text,
+                                int timeout);
+
+    void Set(wxWindow *parent,
+             const wxString& text,
+             int timeout);
+
+    bool IsAutomatic() const { return m_timer.IsRunning(); }
+    void SetDeleteOnHide() { m_deleteOnHide = true; }
+
+private:
+    void OnClose(wxCloseEvent& event);
+    void OnTimer(wxTimerEvent& event);
+
+    // if true, delete the dialog when it should disappear, otherwise just hide
+    // it (initially false)
+    bool m_deleteOnHide;
+
+    // timer which will hide this dialog when it expires, if it's not running
+    // it means we were created without timeout
+    wxTimer m_timer;
+
+
+    DECLARE_EVENT_TABLE()
+    DECLARE_NO_COPY_CLASS(wxNotificationMessageDialog)
+};
+
+// ============================================================================
+// wxNotificationMessageDialog implementation
+// ============================================================================
+
+BEGIN_EVENT_TABLE(wxNotificationMessageDialog, wxDialog)
+    EVT_CLOSE(wxNotificationMessageDialog::OnClose)
+
+    EVT_TIMER(wxID_ANY, wxNotificationMessageDialog::OnTimer)
+END_EVENT_TABLE()
+
+wxNotificationMessageDialog::wxNotificationMessageDialog(wxWindow *parent,
+                                                         const wxString& text,
+                                                         int timeout)
+                           : wxDialog(parent, wxID_ANY, _("Notice"),
+                                      wxDefaultPosition, wxDefaultSize,
+                                      0 /* no caption, no border styles */),
+                             m_timer(this)
+{
+    m_deleteOnHide = false;
+
+    Set(parent, text, timeout);
+}
+
+void
+wxNotificationMessageDialog::Set(wxWindow * WXUNUSED(parent),
+                                 const wxString& text,
+                                 int timeout)
+{
+    wxSizer *sizer = CreateTextSizer(text);
+    SetSizerAndFit(sizer);
+
+    if ( timeout != wxNotificationMessage::Timeout_Never )
+    {
+        // wxTimer uses ms, timeout is in seconds
+        m_timer.Start(timeout*1000, true /* one shot only */);
+    }
+    else if ( m_timer.IsRunning() )
+    {
+        m_timer.Stop();
+    }
+}
+
+void wxNotificationMessageDialog::OnClose(wxCloseEvent& event)
+{
+    if ( m_deleteOnHide )
+    {
+        // we don't need to keep this dialog alive any more
+        Destroy();
+    }
+    else // don't really close, just hide, as we can be shown again later
+    {
+        event.Veto();
+
+        Hide();
+    }
+}
+
+void wxNotificationMessageDialog::OnTimer(wxTimerEvent& WXUNUSED(event))
+{
+    if ( m_deleteOnHide )
+        Destroy();
+    else
+        Hide();
+}
+
+// ============================================================================
+// wxNotificationMessage implementation
+// ============================================================================
+
+int wxNotificationMessage::ms_timeout = 10;
+
+/* static */ void wxNotificationMessage::SetDefaultTimeout(int timeout)
+{
+    wxASSERT_MSG( timeout > 0,
+                "negative or zero default timeout doesn't make sense" );
+
+    ms_timeout = timeout;
+}
+
+void wxNotificationMessage::Init()
+{
+    m_dialog = NULL;
+}
+
+wxNotificationMessage::~wxNotificationMessage()
+{
+    if ( m_dialog->IsAutomatic() )
+    {
+        // we want to allow the user to create an automatically hidden
+        // notification just by creating a local wxNotificationMessage object
+        // and so we shouldn't hide the notification when this object goes out
+        // of scope
+        m_dialog->SetDeleteOnHide();
+    }
+    else // manual dialog, hide it immediately
+    {
+        // OTOH for permanently shown dialogs only the code can hide them and
+        // if the object is deleted, we must do it now as it won't be
+        // accessible programmatically any more
+        delete m_dialog;
+    }
+}
+
+bool wxNotificationMessage::Show(int timeout)
+{
+    if ( timeout == Timeout_Auto )
+    {
+        timeout = GetDefaultTimeout();
+    }
+
+    if ( !m_dialog )
+    {
+        m_dialog = new wxNotificationMessageDialog
+                       (
+                        GetParent(),
+                        GetFullMessage(),
+                        timeout
+                       );
+    }
+    else // update the existing dialog
+    {
+        m_dialog->Set(GetParent(), GetFullMessage(), timeout);
+    }
+
+    m_dialog->Show();
+
+    return true;
+}
+
+bool wxNotificationMessage::Close()
+{
+    if ( !m_dialog )
+        return false;
+
+    m_dialog->Hide();
+
+    return true;
+}
+
+#endif // wxUSE_GENERIC_NOTIFICATION_MESSAGE