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/*
* Copyright (C) 2012-2014 Robin Haberkorn
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef __RING_H
#define __RING_H
#include <bsd/sys/queue.h>
#include <glib.h>
#include <Scintilla.h>
#include "sciteco.h"
#include "interface.h"
#include "undo.h"
#include "qregisters.h"
#include "parser.h"
#include "ioview.h"
namespace SciTECO {
/*
* Classes
*/
class Buffer : private IOView {
TAILQ_ENTRY(Buffer) buffers;
class UndoTokenClose : public UndoToken {
Buffer *buffer;
public:
UndoTokenClose(Buffer *_buffer)
: UndoToken(), buffer(_buffer) {}
void run(void);
};
inline void
undo_close(void)
{
undo.push(new UndoTokenClose(this));
}
public:
gchar *filename;
bool dirty;
Buffer() : filename(NULL), dirty(false)
{
initialize();
/* only have to do this once: */
set_representations();
}
~Buffer()
{
g_free(filename);
}
inline Buffer *&
next(void)
{
return TAILQ_NEXT(this, buffers);
}
inline Buffer *&
prev(void)
{
TAILQ_HEAD(Head, Buffer);
return TAILQ_PREV(this, Head, buffers);
}
inline void
set_filename(const gchar *filename)
{
gchar *resolved = get_absolute_path(filename);
g_free(Buffer::filename);
Buffer::filename = resolved;
interface.info_update(this);
}
inline void
edit(void)
{
interface.show_view(this);
interface.info_update(this);
}
inline void
undo_edit(void)
{
interface.undo_info_update(this);
interface.undo_show_view(this);
}
inline void
load(const gchar *filename)
{
IOView::load(filename);
#if 0 /* NOTE: currently buffer cannot be dirty */
interface.undo_info_update(this);
undo.push_var(dirty) = false;
#endif
set_filename(filename);
}
void save(const gchar *filename = NULL);
/*
* Ring manages the buffer list and has privileged
* access.
*/
friend class Ring;
};
/* object declared in main.cpp */
extern class Ring {
/*
* Emitted after a buffer close
* The pointer is the only remaining reference to the buffer!
*/
class UndoTokenEdit : public UndoToken {
Ring *ring;
Buffer *buffer;
public:
UndoTokenEdit(Ring *_ring, Buffer *_buffer)
: UndoToken(), ring(_ring), buffer(_buffer) {}
~UndoTokenEdit()
{
if (buffer)
delete buffer;
}
void run(void);
};
TAILQ_HEAD(Head, Buffer) head;
public:
Buffer *current;
Ring() : current(NULL)
{
TAILQ_INIT(&head);
}
~Ring();
inline Buffer *
first(void)
{
return TAILQ_FIRST(&head);
}
inline Buffer *
last(void)
{
return TAILQ_LAST(&head, Head);
}
tecoInt get_id(Buffer *buffer);
inline tecoInt
get_id(void)
{
return get_id(current);
}
Buffer *find(const gchar *filename);
Buffer *find(tecoInt id);
void dirtify(void);
bool is_any_dirty(void);
bool edit(tecoInt id);
void edit(const gchar *filename);
inline void
undo_edit(void)
{
undo.push_var(QRegisters::current);
undo.push_var(current)->undo_edit();
}
void close(Buffer *buffer);
void close(void);
inline void
undo_close(void)
{
current->undo_close();
}
void set_scintilla_undo(bool state);
} ring;
/*
* Command states
*/
class StateEditFile : public StateExpectFile {
private:
bool allowFilename;
void do_edit(const gchar *filename);
void do_edit(tecoInt id);
void initial(void);
State *done(const gchar *str);
};
class StateSaveFile : public StateExpectFile {
private:
State *done(const gchar *str);
};
namespace States {
extern StateEditFile editfile;
extern StateSaveFile savefile;
}
/*
* Helper functions applying to any current
* document (whether a buffer or QRegister).
* There's currently no better place to put them.
*/
void current_doc_undo_edit(void);
static inline bool
current_doc_must_undo(void)
{
/*
* If there's no currently edited Q-Register
* we must be editing the current buffer
*/
return !QRegisters::current ||
QRegisters::current->must_undo;
}
} /* namespace SciTECO */
#endif
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