No real changes, just make wxWindow::CanScroll() virtual.

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

diff --git a/include/wx/gtk/clipbrd.h b/include/wx/gtk/clipbrd.h
index 913379cac7631cd26f89afb2ce9434d1f7d83165..28d84df8152445dba2dd47444de308a2b5b743d3 100644 (file)
--- a/include/wx/gtk/clipbrd.h
+++ b/include/wx/gtk/clipbrd.h
@@ -1,54 +1,33 @@
 /////////////////////////////////////////////////////////////////////////////
-// Name:        clipboard.h
-// Purpose:
-// Author:      Robert Roebling
-// Id:          $Id$
+// Name:        wx/gtk/clipbrd.h
+// Purpose:     wxClipboard for wxGTK
+// Author:      Robert Roebling, Vadim Zeitlin
 // Copyright:   (c) 1998 Robert Roebling
+//              (c) 2007 Vadim Zeitlin
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
+#ifndef _WX_GTK_CLIPBOARD_H_
+#define _WX_GTK_CLIPBOARD_H_
 
-#ifndef __GTKCLIPBOARDH__
-#define __GTKCLIPBOARDH__
-
-#ifdef __GNUG__
-#pragma interface
-#endif
-
-#include "wx/defs.h"
-
-#if wxUSE_CLIPBOARD
-
-#include "wx/object.h"
-#include "wx/list.h"
-#include "wx/dataobj.h"
-#include "wx/control.h"
-#include "wx/module.h"
-
-//-----------------------------------------------------------------------------
-// classes
-//-----------------------------------------------------------------------------
-
-class wxClipboard;
-class wxClipboardModule;
-
-//-----------------------------------------------------------------------------
-// global data
-//-----------------------------------------------------------------------------
-
-extern wxClipboard* wxTheClipboard;
-
-//-----------------------------------------------------------------------------
+// ----------------------------------------------------------------------------
 // wxClipboard
-//-----------------------------------------------------------------------------
+// ----------------------------------------------------------------------------
 
-class wxClipboard : public wxObject
-{
-    DECLARE_DYNAMIC_CLASS(wxClipboard)
+#include "wx/weakref.h"
 
+class WXDLLIMPEXP_CORE wxClipboard : public wxClipboardBase
+{
 public:
+    // there are several clipboards in X11 (and in GDK)
+    enum Kind
+    {
+        Primary,
+        Clipboard
+    };
+
     wxClipboard();
-    ~wxClipboard();
+    virtual ~wxClipboard();
 
     // open the clipboard before SetData() and GetData()
     virtual bool Open();
@@ -56,6 +35,9 @@ public:
     // close the clipboard after SetData() and GetData()
     virtual void Close();
 
+    // query whether the clipboard is opened
+    virtual bool IsOpened() const;
+
     // set the clipboard data. all other formats will be deleted.
     virtual bool SetData( wxDataObject *data );
 
@@ -63,47 +45,91 @@ public:
     virtual bool AddData( wxDataObject *data );
 
     // ask if data in correct format is available
-    virtual bool IsSupported( wxDataObject &data );
+    virtual bool IsSupported( const wxDataFormat& format );
+
+    // 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 );
+    virtual bool GetData( wxDataObject& data );
 
     // clears wxTheClipboard and the system's clipboard if possible
     virtual void Clear();
 
-    // implementation
 
-    bool              m_open;
 
-    bool              m_ownsClipboard;
-    bool              m_ownsPrimarySelection;
+    // implementation from now on
+    // --------------------------
 
-    wxDataBroker     *m_dataBroker;
-    GtkWidget        *m_clipboardWidget;
+    // get our clipboard item (depending on m_usePrimary value)
+    GdkAtom GTKGetClipboardAtom() const;
 
-    bool              m_formatSupported;
-    GdkAtom           m_targetRequested;
+    // get the data object currently being requested
+    wxDataObject *GTKGetDataObject( GdkAtom atom );
 
-    wxDataObject      *m_receivedData;
-};
+    // clear the data for the given clipboard kind
+    void GTKClearData(Kind kind);
 
-//-----------------------------------------------------------------------------
-// wxClipboardModule
-//-----------------------------------------------------------------------------
+    // called when selection data is received
+    void GTKOnSelectionReceived(const GtkSelectionData& sel);
 
-class wxClipboardModule: public wxModule
-{
-  DECLARE_DYNAMIC_CLASS(wxClipboardModule)
+    // called when available target information is received
+    bool GTKOnTargetReceived(const wxDataFormat& format);
 
-public:
-    wxClipboardModule() {}
-    bool OnInit();
-    void OnExit();
-};
+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;
 
-#endif
+    // this is used to temporarily hold the object passed to our GetData() so
+    // that GTK callbacks could access it
+    wxDataObject *m_receivedData;
 
-   // wxUSE_CLIPBOARD
+    // 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
+
+    // ID of the connection to "selection_get" signal, initially 0.
+    unsigned long m_idSelectionGetHandler;
+
+    bool m_open;
+    bool m_formatSupported;
+
+public:
+    // 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_