look for backtrace() in -lexecinfo, fixes #9783

[wxWidgets.git] / include / wx / gtk / clipbrd.h

diff --git a/include/wx/gtk/clipbrd.h b/include/wx/gtk/clipbrd.h
index aa46abbb0057ddc26e5a382339936a152105a581..548e911743adbb7fd2ed5375c3403c9743644511 100644 (file)
--- a/include/wx/gtk/clipbrd.h
+++ b/include/wx/gtk/clipbrd.h
@@ -1,71 +1,133 @@
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////

-// Name:        clipboard.h
-// Purpose:
-// Author:      Robert Roebling
+// Name:        wx/gtk/clipboard.h
+// Purpose:     wxClipboard for wxGTK
+// Author:      Robert Roebling, Vadim Zeitlin

 // Id:          $Id$
 // Copyright:   (c) 1998 Robert Roebling
 // Id:          $Id$
 // Copyright:   (c) 1998 Robert Roebling

-// Licence:    wxWindows licence
+//              (c) 2007 Vadim Zeitlin
+// Licence:     wxWindows licence

 /////////////////////////////////////////////////////////////////////////////
 
 /////////////////////////////////////////////////////////////////////////////
 

+#ifndef _WX_GTK_CLIPBOARD_H_
+#define _WX_GTK_CLIPBOARD_H_

 
 

-#ifndef __GTKCLIPBOARDH__
-#define __GTKCLIPBOARDH__
+// ----------------------------------------------------------------------------
+// wxClipboard
+// ----------------------------------------------------------------------------

 
 

-#ifdef __GNUG__
-#pragma interface
-#endif
+#include "wx/weakref.h"

 
 

-#include "wx/defs.h"
-#include "wx/object.h"
-#include "wx/list.h"
-#include "wx/control.h"
-#include "wx/dnd.h"      // for wxDataObject
+class WXDLLIMPEXP_CORE wxClipboard : public wxClipboardBase
+{
+public:
+    // there are several clipboards in X11 (and in GDK)
+    enum Kind
+    {
+        Primary,
+        Clipboard
+    };

 
 

-//-----------------------------------------------------------------------------
-// classes
-//-----------------------------------------------------------------------------
+    wxClipboard();
+    virtual ~wxClipboard();

 
 

-class wxClipboard;
+    // open the clipboard before SetData() and GetData()
+    virtual bool Open();

 
 

-//-----------------------------------------------------------------------------
-// global functions
-//-----------------------------------------------------------------------------
+    // close the clipboard after SetData() and GetData()
+    virtual void Close();

 
 

-void wxInitClipboard();
-void wxDoneClipboard();
+    // query whether the clipboard is opened
+    virtual bool IsOpened() const;

 
 

-//-----------------------------------------------------------------------------
-// global data
-//-----------------------------------------------------------------------------
+    // set the clipboard data. all other formats will be deleted.
+    virtual bool SetData( wxDataObject *data );

 
 

-extern wxClipboard* wxTheClipboard;
+    // add to the clipboard data.
+    virtual bool AddData( wxDataObject *data );

 
 

-//-----------------------------------------------------------------------------
-// wxClipboard
-//-----------------------------------------------------------------------------
+    // ask if data in correct format is available
+    virtual bool IsSupported( const wxDataFormat& format );

 
 

-class  wxClipboard: public wxObject
-{
-  DECLARE_DYNAMIC_CLASS(wxClipboard)
+    // ask if data in correct format is available
+    virtual bool IsSupportedAsync( wxEvtHandler *sink );
+
+    // fill data with data on the clipboard (if available)
+    virtual bool GetData( wxDataObject& data );
+
+    // clears wxTheClipboard and the system's clipboard if possible
+    virtual void Clear();
+
+
+
+    // implementation from now on
+    // --------------------------
+
+    // get our clipboard item (depending on m_usePrimary value)
+    GdkAtom GTKGetClipboardAtom() const;
+
+    // get the data object currently being used
+    wxDataObject *GTKGetDataObject() { return Data(); }
+
+    // clear the data for the given clipboard kind
+    void GTKClearData(Kind kind);
+
+    // called when selection data is received
+    void GTKOnSelectionReceived(const GtkSelectionData& sel);
+
+    // called when available target information is received
+    bool GTKOnTargetReceived(const wxDataFormat& format);
+
+private:
+    // the data object for the specific selection
+    wxDataObject *& Data(Kind kind)
+    {
+        return kind == Primary ? m_dataPrimary : m_dataClipboard;
+    }
+
+    // the data object we're currently using
+    wxDataObject *& Data()
+    {
+        return Data(m_usePrimary ? Primary : Clipboard);
+    }
+
+
+    // set or unset selection ownership
+    bool SetSelectionOwner(bool set = true);
+
+    // add atom to the list of supported targets
+    void AddSupportedTarget(GdkAtom atom);
+
+    // check if the given format is supported
+    bool DoIsSupported(const wxDataFormat& format);
+
+
+    // both of these pointers can be non-NULL simultaneously but we only use
+    // one of them at any moment depending on m_usePrimary value, use Data()
+    // (from inside) or GTKGetDataObject() (from outside) accessors
+    wxDataObject *m_dataPrimary,
+                 *m_dataClipboard;
+
+    // this is used to temporarily hold the object passed to our GetData() so
+    // that GTK callbacks could access it
+    wxDataObject *m_receivedData;
+
+    // used to pass information about the format we need from DoIsSupported()
+    // to GTKOnTargetReceived()
+    GdkAtom m_targetRequested;
+
+    GtkWidget *m_clipboardWidget;  // for getting and offering data
+    GtkWidget *m_targetsWidget;    // for getting list of supported formats
+
+    bool m_open;
+    bool m_formatSupported;

 
 public:
 
 public:

- 
-  wxClipboard();
-  ~wxClipboard();
-
-  virtual void SetData( wxDataObject *data );
-  virtual void *GetData( wxDataFormat format, size_t *length );
-  virtual bool IsAvailable( wxDataFormat format );
-
- // implementation 
-  
-  wxDataObject  *m_data;
-  char          *m_sentString, 
-               *m_receivedString;
-  void          *m_receivedTargets;
-  size_t         m_receivedLength;
-  GtkWidget     *m_clipboardWidget;
+    // async stuff
+    wxEvtHandlerRef    m_sink;
+private:
+    GtkWidget         *m_targetsWidgetAsync;  // for getting list of supported formats
+
+    DECLARE_DYNAMIC_CLASS(wxClipboard)

 };
 
 };
 

-#endif
-    // __GTKCLIPBOARDH__
+#endif // _WX_GTK_CLIPBOARD_H_