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///////////////////////////////////////////////////////////////////////////////
// Name: wx/osx/private/datatransfer.h
// Purpose: OS X specific data transfer implementation
// Author: Stefan Csomor
// Created: 2019-03-29
// Copyright: (c) 2019 Stefan Csomor <vadim@wxwidgets.org>
// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
#ifndef _WX_OSX_PRIVATE_DATATRANSFER_H_
#define _WX_OSX_PRIVATE_DATATRANSFER_H_
#include "wx/osx/private.h"
#include "wx/osx/dataform.h"
class WXDLLIMPEXP_FWD_CORE wxDataObject;
class WXDLLIMPEXP_CORE wxOSXDataSourceItem
{
public:
virtual ~wxOSXDataSourceItem();
virtual wxDataFormat::NativeFormat AvailableType(CFArrayRef types) const = 0;
virtual bool GetData( const wxDataFormat& dataFormat, wxMemoryBuffer& target) = 0;
virtual bool GetData( wxDataFormat::NativeFormat type, wxMemoryBuffer& target) = 0;
virtual CFDataRef DoGetData(wxDataFormat::NativeFormat type) const = 0;
};
class WXDLLIMPEXP_CORE wxOSXDataSource
{
public:
// the number of source items
virtual size_t GetItemCount() const = 0;
// get source item by index, needs to be deleted after use
virtual const wxOSXDataSourceItem* GetItem(size_t pos) const = 0;
// returns true if there is any data in this source conforming to dataFormat
virtual bool IsSupported(const wxDataFormat &dataFormat);
// returns true if there is any data in this source supported by dataobj
virtual bool IsSupported(const wxDataObject &dataobj);
// returns true if there is any data in this source of types
virtual bool HasData(CFArrayRef types) const = 0;
};
class WXDLLIMPEXP_CORE wxOSXDataSinkItem
{
public:
virtual ~wxOSXDataSinkItem();
virtual void SetFilename(const wxString& filename);
// translating from wx into native representation
virtual void SetData(const wxDataFormat& format, const void *buf, size_t size) = 0;
// translating from wx into native representation
virtual void SetData(wxDataFormat::NativeFormat format, const void *buf, size_t size) = 0;
// native implementation for setting data
virtual void DoSetData(wxDataFormat::NativeFormat format, CFDataRef data) = 0;
};
class WXDLLIMPEXP_CORE wxOSXDataSink
{
public:
// delete all created sink items
virtual void Clear() = 0;
// create a new sink item
virtual wxOSXDataSinkItem* CreateItem() = 0;
// flush the created sink items into the system sink representation
virtual void Flush() = 0 ;
};
class WXDLLIMPEXP_CORE wxOSXPasteboard : public wxOSXDataSink, public wxOSXDataSource
{
public:
wxOSXPasteboard(OSXPasteboard native);
~wxOSXPasteboard();
// sink methods
virtual wxOSXDataSinkItem* CreateItem() wxOVERRIDE;
void Clear() wxOVERRIDE;
void Flush() wxOVERRIDE;
// source methods
virtual size_t GetItemCount() const wxOVERRIDE;
virtual const wxOSXDataSourceItem* GetItem(size_t pos) const wxOVERRIDE;
virtual bool HasData(CFArrayRef types) const wxOVERRIDE;
static wxOSXPasteboard* GetGeneralClipboard();
private:
void DeleteSinkItems();
OSXPasteboard m_pasteboard;
wxVector<wxOSXDataSinkItem*> m_sinkItems;
};
#endif
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