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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright 2017 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 <ucx/list.h>
#include "../common/context.h"

#ifdef	__cplusplus
extern "C" {
#endif

#define UI_TEXTBUF_INSERT 0
#define UI_TEXTBUF_DELETE 1
typedef struct UiTextBufOp {
    int  type; // UI_TEXTBUF_INSERT, UI_TEXTBUF_DELETE
    int  start;
    int  end;
    int  len;
    char *text;
} UiTextBufOp;

typedef struct UiUndoMgr {
    UcxList *begin;
    UcxList *cur;
    int     length;
    int     event;
} UiUndoMgr;

typedef struct UiTextArea {
    UiContext *ctx;
    UiVar    *var;
    int       last_selection_state;
} UiTextArea;

typedef struct UiTextField {
    UiContext *ctx;
    UiVar    *var;
    // TODO: validatefunc
} UiTextField;

UIWIDGET ui_textarea_var(UiObject *obj, UiVar *var);
void ui_textarea_destroy(GtkWidget *object, UiTextArea *textarea);

char* ui_textarea_get(UiText *text);
void ui_textarea_set(UiText *text, 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);
void ui_textarea_remove(UiText *text, int begin, int end);

void ui_textarea_realize_event(GtkWidget *widget, gpointer data);
void ui_textbuf_changed(GtkTextBuffer *textbuffer, UiTextArea *textarea);

void ui_textbuf_insert(
        GtkTextBuffer *textbuffer,
        GtkTextIter *location,
        char *text,
        int len,
        void *data);
void ui_textbuf_delete(
        GtkTextBuffer *textbuffer,
        GtkTextIter *start,
        GtkTextIter *end,
        void *data);
UiUndoMgr* ui_create_undomgr();
void ui_free_textbuf_op(UiTextBufOp *op);
int ui_check_insertstr(char *oldstr, int oldlen, char *newstr, int newlen);

void ui_textfield_destroy(GtkWidget *object, UiTextField *textfield);
void ui_textfield_changed(GtkEditable *editable, UiTextField *textfield);

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

#ifdef	__cplusplus
}
#endif

#endif	/* TEXT_H */