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/*
* Copyright (C) 2012-2023 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/>.
*/
#pragma once
#include <string.h>
#include <glib.h>
#include <Scintilla.h>
#include "sciteco.h"
#include "view.h"
#include "undo.h"
/**
* Scintilla document type.
* The struct is never defined and only exists for improved
* type safety.
*/
typedef struct teco_doc_scintilla_t teco_doc_scintilla_t;
/**
* A Scintilla document.
*
* Also contains other attributes required to restore
* the overall editor state when loading it into a Scintilla view.
*/
typedef struct {
/**
* Underlying Scintilla document.
* It is created on demand in teco_doc_maybe_create_document(),
* so that we don't waste memory on integer-only Q-Registers.
*/
teco_doc_scintilla_t *doc;
/*
* The so called "parameters".
* Updated/restored only when required
*/
gint anchor, dot;
gint first_line, xoffset;
} teco_doc_t;
/** @memberof teco_doc_t */
static inline void
teco_doc_init(teco_doc_t *ctx)
{
memset(ctx, 0, sizeof(*ctx));
}
void teco_doc_edit(teco_doc_t *ctx);
void teco_doc_undo_edit(teco_doc_t *ctx);
void teco_doc_set_string(teco_doc_t *ctx, const gchar *str, gsize len);
void teco_doc_undo_set_string(teco_doc_t *ctx);
void teco_doc_get_string(teco_doc_t *ctx, gchar **str, gsize *len);
void teco_doc_update_from_view(teco_doc_t *ctx, teco_view_t *from);
void teco_doc_update_from_doc(teco_doc_t *ctx, const teco_doc_t *from);
/** @memberof teco_doc_t */
#define teco_doc_update(CTX, FROM) \
(_Generic((FROM), teco_view_t * : teco_doc_update_from_view, \
teco_doc_t * : teco_doc_update_from_doc, \
const teco_doc_t * : teco_doc_update_from_doc)((CTX), (FROM)))
/** @memberof teco_doc_t */
static inline void
teco_doc_reset(teco_doc_t *ctx)
{
ctx->anchor = ctx->dot = 0;
ctx->first_line = ctx->xoffset = 0;
}
/** @memberof teco_doc_t */
static inline void
teco_doc_undo_reset(teco_doc_t *ctx)
{
/*
* NOTE: Could be rolled into one function
* and called with teco_undo_call() if we really
* wanted to save more memory.
*/
teco_undo_gint(ctx->anchor);
teco_undo_gint(ctx->dot);
teco_undo_gint(ctx->first_line);
teco_undo_gint(ctx->xoffset);
}
void teco_doc_exchange(teco_doc_t *ctx, teco_doc_t *other);
/** @memberof teco_doc_t */
static inline void
teco_doc_undo_exchange(teco_doc_t *ctx)
{
teco_undo_ptr(ctx->doc);
teco_doc_undo_reset(ctx);
}
void teco_doc_clear(teco_doc_t *ctx);
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