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/*******************************************************************************
* Copyright (c) 2013-2021, Andrés Martinelli <andmarti@gmail.com> *
* All rights reserved. *
* *
* This file is a part of SC-IM *
* *
* SC-IM is a spreadsheet program that is based on SC. The original authors *
* of SC are James Gosling and Mark Weiser, and mods were later added by *
* Chuck Martin. *
* *
* Redistribution and use in source and binary forms, with or without *
* modification, are permitted provided that the following conditions are met: *
* 1. Redistributions of source code must retain the above copyright *
* notice, this list of conditions and the following disclaimer. *
* 2. Redistributions in binary form must reproduce the above copyright *
* notice, this list of conditions and the following disclaimer in the *
* documentation and/or other materials provided with the distribution. *
* 3. All advertising materials mentioning features or use of this software *
* must display the following acknowledgement: *
* This product includes software developed by Andrés Martinelli *
* <andmarti@gmail.com>. *
* 4. Neither the name of the Andrés Martinelli nor the *
* names of other contributors may be used to endorse or promote products *
* derived from this software without specific prior written permission. *
* *
* THIS SOFTWARE IS PROVIDED BY ANDRES MARTINELLI ''AS IS'' AND ANY *
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED *
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE *
* DISCLAIMED. IN NO EVENT SHALL ANDRES MARTINELLI BE LIABLE FOR ANY *
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES *
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;*
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND *
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT *
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE *
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *
*******************************************************************************/
/**
* \file undo.h
* \author Andrés Martinelli <andmarti@gmail.com>
* \date 2017-07-18
* \brief Header file for undo.c
*/
#define UNDO_ADD 'a'
#define UNDO_DEL 'd'
#define HANDLE_DEPS 1
#define IGNORE_DEPS 0
struct undo {
struct undo * p_ant;
struct ent * added;
struct ent * removed;
struct undo_range_shift * range_shift;
struct undo_cols_format * cols_format;
struct undo * p_sig;
struct ent_ptr * allocations;
int alloc_size;
int * row_hidded;
int * row_showed;
int * col_hidded;
int * col_showed;
};
struct undo_range_shift {
int delta_rows;
int delta_cols;
int tlrow;
int tlcol;
int brrow;
int brcol;
};
//These two structures are for undo / redo changes in column format
struct undo_col_info {
char type; // a column can be 'R' (removed) or 'A' (added) because of change
int col;
int fwidth;
int precision;
int realfmt;
};
struct undo_cols_format {
size_t length; // keep the number of elements (cols)
struct undo_col_info * cols;
};
void create_undo_action();
void end_undo_action();
void copy_to_undostruct (int ri, int ci, int rf, int cf, char type, short handle_deps, struct ent ** destination);
void save_undo_range_shift(int delta_rows, int delta_cols, int tlrow, int tlcol, int brrow, int brcol);
void undo_hide_show(int row, int col, char type, int arg);
void add_undo_col_format(int col, int type, int fwidth, int precision, int realfmt);
void add_to_undolist(struct undo u);
void do_undo();
void do_redo();
void clear_undo_list ();
void clear_from_current_pos();
int len_undo_list();
void free_undo_node(struct undo * ul);
void dismiss_undo_item(struct undo * ul);
void copy_cell_to_undostruct (struct ent * new, struct ent * ori, char type);
void save_pointer_after_calloc(struct ent * e);
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