// -*- C++ -*-
/*
* Combox: A combination of two objects (a button and a browser) is
* encapsulated to get a combobox-like object. All XForms
* functions are hidden.
*
* GNU Copyleft (C) 1996 Alejandro Aguilar Sierra <[email protected]>
* and the LyX Team.
*
* Dependencies: Only XForms, but created to be used with LyX.
*
*/
/* Change log:
*
* 2/06/1996, Alejandro Aguilar Sierra
* Created and tested.
*
* 4/06/1996, Alejandro Aguilar Sierra
* Added droplist mode (a button with a black down arrow at right)
* and support for middle and right buttons, as XForms choice object.
*/
#ifndef _COMBOX_H_
#define _COMBOX_H_
#ifdef __GNUG__
#pragma interface
#endif
#include FORMS_H_LOCATION
#include <stdlib.h>
///
enum combox_type {
///
FL_COMBOX_NORMAL,
///
FL_COMBOX_DROPLIST,
///
FL_COMBOX_INPUT
};
/// callback prototype
typedef void (*FL_COMBO_CB) (int, void*);
/// pre post prototype
typedef void (*FL_COMBO_PRE_POST) ();
///
class Combox {
public:
///
Combox(combox_type t=FL_COMBOX_NORMAL);
///
~Combox();
/** To add this object to a form. Note that there are two heights
for normal (button) and expanded (browser) mode each. */
void add(int x, int y, int w, int hmin, int hmax);
/// Add lines. Same as for fl_browser object
void addline(char const*);
/// Add lines. Same as for fl_browser object
void addto(char const*);
/// Returns the selected item
int get();
/// Returns a pointer to the selected line of text
char const*getline();
/// Select an arbitrary item
void select(int);
///
bool select_text(char const*);
/// Clear all the list
void clear();
/// Is the combox cleared (empty)
bool empty() { return is_empty; }
/// Remove the objects from the form they are in.
void remove();
/** Assign a callback to this object. The callback should be a void
function with a int and a void pointer as parameters. */
void setcallback(FL_COMBO_CB, void *);
/// Pre handler
void setpre(FL_COMBO_PRE_POST);
/// Post handler
void setpost(FL_COMBO_PRE_POST);
/// XForms attributes
void resize(unsigned);
///
void gravity(unsigned, unsigned);
///
void activate();
///
void deactivate();
///
void shortcut(char const*, int);
///
void Redraw();
///
void Show();
protected:
/// At least Hide should not be public
void Hide(int who = 0);
///
FL_OBJECT *browser;
private:
///
combox_type type;
///
int bw, bh;
///
int sel;
///
bool is_empty;
///
static void combo_cb(FL_OBJECT *, long);
///
static void input_cb(FL_OBJECT *, long);
///
static int peek_event(FL_FORM *, void *);
///
FL_COMBO_CB callback;
///
void *cb_arg;
///
FL_COMBO_PRE_POST _pre;
///
FL_COMBO_PRE_POST _post;
///
FL_OBJECT *button;
///
FL_OBJECT *label;
///
FL_FORM* form;
};
//----------------- Inline methods ---------------------------
inline
void Combox::addto(char const* text)
{
if (browser) {
fl_addto_browser(browser, text);
is_empty = false;
}
}
inline
void Combox::resize(unsigned r)
{
fl_set_object_resize(button, r);
if (label!=button) fl_set_object_resize(label, r);
}
inline
void Combox::gravity(unsigned g1, unsigned g2)
{
fl_set_object_gravity(button, g1, g2);
if (label!=button) fl_set_object_gravity(label, g1, g2);
}
inline
void Combox::shortcut(char const* s, int i)
{
if (button)
fl_set_object_shortcut(button,s,i);
}
inline
void Combox::setcallback(FL_COMBO_CB cb, void *a = NULL)
{
callback = cb;
cb_arg = a;
}
inline
void Combox::setpre(FL_COMBO_PRE_POST cb)
{
_pre = cb;
}
inline
void Combox::setpost(FL_COMBO_PRE_POST cb)
{
_post = cb;
}
inline
int Combox::get()
{
return sel;
}
inline
char const*Combox::getline()
{
if (type==FL_COMBOX_INPUT)
return fl_get_input(label);
else
return ((browser) ? fl_get_browser_line(browser, sel): (char const*)NULL);
}
#endif
¤ Dauer der Verarbeitung: 0.14 Sekunden
(vorverarbeitet)
¤
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