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//
// Fl_Check_Browser header file for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998-2020 by Bill Spitzak and others.
//
// This library is free software. Distribution and use rights are outlined in
// the file "COPYING" which should have been included with this file. If this
// file is missing or damaged, see the license at:
//
// https://www.fltk.org/COPYING.php
//
// Please see the following page on how to report bugs and issues:
//
// https://www.fltk.org/bugs.php
//
/* \file
Fl_Check_Browser widget . */
#ifndef Fl_Check_Browser_H
#define Fl_Check_Browser_H
#include "Fl.H"
#include "Fl_Browser_.H"
/**
The Fl_Check_Browser widget displays a scrolling list of text
lines that may be selected and/or checked by the user.
*/
class FL_EXPORT Fl_Check_Browser : public Fl_Browser_ {
protected:
/* required routines for Fl_Browser_ subclass: */
void *item_first() const override;
void *item_next(void *) const override;
void *item_prev(void *) const override;
int item_height(void *) const override;
int item_width(void *) const override;
void item_draw(void *, int, int, int, int) const override;
void item_select(void *, int);
int item_selected(void *) const override;
const char *item_text(void *item) const override;
public:
void *item_at(int index) const override;
void item_swap(int ia, int ib);
void item_swap(void *a, void *b);
/* private data */
public: // IRIX 5.3 C++ compiler doesn't support private structures...
#ifndef FL_DOXYGEN
/** For internal use only. */
struct cb_item {
cb_item *next; /**< For internal use only. */
cb_item *prev; /**< For internal use only. */
char checked; /**< For internal use only. */
char selected; /**< For internal use only. */
char *text; /**< For internal use only. */
};
#endif // !FL_DOXYGEN
private:
cb_item *first;
cb_item *last;
cb_item *cache;
int cached_item;
int nitems_;
int nchecked_;
cb_item *find_item(int) const;
int lineno(cb_item *) const;
public:
Fl_Check_Browser(int x, int y, int w, int h, const char *l = 0);
/** The destructor deletes all list items and destroys the browser. */
~Fl_Check_Browser() { clear(); }
int add(char *s); // add an (unchecked) item
int add(char *s, int b); // add an item and set checked
// both return the new nitems()
int remove(int item); // delete an item. Returns nitems()
// inline const char * methods to avoid breaking binary compatibility...
/** See int Fl_Check_Browser::add(char *s) */
int add(const char *s) { return add((char *)s); }
/** See int Fl_Check_Browser::add(char *s) */
int add(const char *s, int b) { return add((char *)s, b); }
void clear(); // delete all items
/**
Returns how many lines are in the browser. The last line number is equal to
this.
*/
int nitems() const { return nitems_; }
/** Returns how many items are currently checked. */
int nchecked() const { return nchecked_; }
int checked(int item) const;
void checked(int item, int b);
/** Equivalent to Fl_Check_Browser::checked(item, 1). */
void set_checked(int item) { checked(item, 1); }
void check_all();
void check_none();
int value() const; // currently selected item
char *text(int item) const; // returns pointer to internal buffer
protected:
int handle(int);
};
#endif // Fl_Check_Browser_H
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