/*
 *	HT Editor
 *	htclipboard.h
 *
 *	Copyright (C) 1999-2002 Stefan Weyergraf
 *
 *	This program is free software; you can redistribute it and/or modify
 *	it under the terms of the GNU General Public License version 2 as
 *	published by the Free Software Foundation.
 *
 *	This program is distributed in the hope that it will be useful,
 *	but WITHOUT ANY WARRANTY; without even the implied warranty of
 *	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *	GNU General Public License for more details.
 *
 *	You should have received a copy of the GNU General Public License
 *	along with this program; if not, write to the Free Software
 *	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#ifndef __HTCLIPBOARD_H__
#define __HTCLIPBOARD_H__

#include "io/types.h"
#include "stream.h"
#include "htformat.h"

/*
 *	CLASS ht_clipboard
 */

class ht_clipboard: public MemoryFile {
public:
	List *copy_history;
	FileOfs select_start, select_len;

		ht_clipboard();
	virtual	~ht_clipboard();
/* overwritten */
	virtual	uint write(const void *buf, uint size);
/* new */
		void clear();
};

/*
 *	CLASS ht_clipboard_viewer
 */

class ht_clipboard_viewer: public ht_uformat_viewer {
protected:
	uint lastwritecount;
	uint lastentrycount;

		int get_pindicator_str(char *buf, int max_len);
		void selection_changed();
public:
		void init(Bounds *b, const char *desc, int caps, ht_clipboard *clipboard, ht_format_group *format_group);
/* overwritten */
	virtual	void draw();
	virtual void handlemsg(htmsg *msg);
	virtual	void pselect_add(FileOfs start, FileOfs end);
	virtual	void pselect_set(FileOfs start, FileOfs end);
/* new */
			void update_content();
};

/* clipboard functions */

void clipboard_add_copy_history_entry(const char *source, FileOfs start, FileOfs size, time_t time);
FileOfs clipboard_copy(const char *source_desc, void *buf, uint len);
FileOfs clipboard_copy(const char *source_desc, File *streamfile, FileOfs offset, FileOfs len);
FileOfs clipboard_paste(void *buf, FileOfs maxlen);
FileOfs clipboard_paste(File *streamfile, FileOfs offset);
bool clipboard_clear();
FileOfs clipboard_getsize();

/*
 *	INIT
 */

bool init_clipboard();

/*
 *	DONE
 */

void done_clipboard();

extern ht_clipboard *clipboard;

#endif /* __HTCLIPBOARD_H__ */