ui/motif/text.h

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright 2014 Olaf Wintermann. All rights reserved.
 *
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 THE COPYRIGHT HOLDER OR CONTRIBUTORS 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 OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef TEXT_H
#define	TEXT_H

#include "../ui/text.h"
#include "toolkit.h"
#include <cx/list.h>

#ifdef	__cplusplus
extern "C" {
#endif

#define UI_TEXTBUF_INSERT 0
#define UI_TEXTBUF_DELETE 1
typedef struct UiTextBufOp UiTextBufOp;
struct UiTextBufOp {
    UiTextBufOp *prev;
    UiTextBufOp *next;
    int  type; // UI_TEXTBUF_INSERT, UI_TEXTBUF_DELETE
    int  start;
    int  end;
    int  len;
    char *text;
};
    
typedef struct UiUndoMgr {
    UiTextBufOp *begin;
    UiTextBufOp *end;
    UiTextBufOp *cur;
    int         length;
    int         event;
} UiUndoMgr;

typedef struct UiTextArea {
    UiContext *ctx;
    int last_selection_state;
} UiTextArea;
    
char* ui_textarea_get(UiText *text);
void ui_textarea_set(UiText *text, const char *str);
char* ui_textarea_getsubstr(UiText *text, int begin, int end);
void ui_textarea_insert(UiText *text, int pos, char *str);
void ui_textarea_setposition(UiText *text, int pos);
int ui_textarea_position(UiText *text);
void ui_textarea_selection(UiText *text, int *begin, int *end);
int ui_textarea_length(UiText *text);

UiUndoMgr* ui_create_undomgr();
void ui_destroy_undomgr(UiUndoMgr *mgr);
void ui_text_selection_callback(
        Widget widget,
        UiTextArea *textarea,
        XtPointer data);
void ui_text_modify_callback(Widget widget, UiVar *var, XtPointer data);
int ui_check_insertstr(char *oldstr, int oldlen, char *newstr, int newlen);
void ui_free_textbuf_op(UiTextBufOp *op);

char* ui_textfield_get(UiString *str);
void ui_textfield_set(UiString *str, char *value);

#ifdef	__cplusplus
}
#endif

#endif	/* TEXT_H */