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freebsd-skq/contrib/ncurses/c++/cursesm.cc
Peter Wemm 0e3d540892 Import unmodified (but trimmed) ncurses 5.0 prerelease 990821. 
This contains the full eti (panel, form, menu) extensions.
bmake glue to follow.

Obtained from:	ftp://ftp.clark.net/pub/dickey/ncurses
1999-08-24 01:06:48 +00:00

384 lines
9.7 KiB
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// * this is for making emacs happy: -*-Mode: C++;-*-
/****************************************************************************
* Copyright (c) 1998 Free Software Foundation, Inc. *
* *
* Permission is hereby granted, free of charge, to any person obtaining a *
* copy of this software and associated documentation files (the *
* "Software"), to deal in the Software without restriction, including *
* without limitation the rights to use, copy, modify, merge, publish, *
* distribute, distribute with modifications, sublicense, and/or sell *
* copies of the Software, and to permit persons to whom the Software is *
* furnished to do so, subject to the following conditions: *
* *
* The above copyright notice and this permission notice shall be included *
* in all copies or substantial portions of the Software. *
* *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
* *
* Except as contained in this notice, the name(s) of the above copyright *
* holders shall not be used in advertising or otherwise to promote the *
* sale, use or other dealings in this Software without prior written *
* authorization. *
****************************************************************************/
/****************************************************************************
* Author: Juergen Pfeifer <juergen.pfeifer@gmx.net> 1997 *
****************************************************************************/
#include "cursesm.h"
#include "cursesapp.h"
#include "internal.h"
MODULE_ID("$Id: cursesm.cc,v 1.11 1999/07/31 09:45:23 juergen Exp $")
NCursesMenuItem::~NCursesMenuItem() {
if (item)
OnError(::free_item(item));
}
bool
NCursesMenuItem::action() {
return FALSE;
};
NCursesMenuCallbackItem::~NCursesMenuCallbackItem() {
}
bool
NCursesMenuCallbackItem::action() {
if (p_fct)
return p_fct (*this);
else
return FALSE;
}
/* Internal hook functions. They will route the hook
* calls to virtual methods of the NCursesMenu class,
* so in C++ providing a hook is done simply by
* implementing a virtual method in a derived class
*/
void
NCursesMenu::mnu_init(MENU *m) {
getHook(m)->On_Menu_Init();
}
void
NCursesMenu::mnu_term(MENU *m) {
getHook(m)->On_Menu_Termination();
}
void
NCursesMenu::itm_init(MENU *m) {
NCursesMenu* M = getHook(m);
M->On_Item_Init (*(M->current_item ()));
}
void
NCursesMenu::itm_term(MENU *m) {
NCursesMenu* M = getHook(m);
M->On_Item_Termination (*(M->current_item ()));
}
/* Construct an ITEM* array from an array of NCursesMenuItem
* objects.
*/
ITEM**
NCursesMenu::mapItems(NCursesMenuItem* nitems[]) {
int itemCount = 0,lcv;
for (lcv=0; nitems[lcv]->item; ++lcv)
++itemCount;
ITEM** items = new ITEM*[itemCount + 1];
for (lcv=0;nitems[lcv]->item;++lcv) {
items[lcv] = nitems[lcv]->item;
}
items[lcv] = NULL;
my_items = nitems;
if (menu)
delete[] ::menu_items(menu);
return items;
}
void
NCursesMenu::InitMenu(NCursesMenuItem* nitems[],
bool with_frame,
bool autoDelete_Items) {
int mrows, mcols;
keypad(TRUE);
meta(TRUE);
b_framed = with_frame;
b_autoDelete = autoDelete_Items;
menu = (MENU*)0;
menu = ::new_menu(mapItems(nitems));
if (!menu)
OnError (E_SYSTEM_ERROR);
UserHook* hook = new UserHook;
hook->m_user = NULL;
hook->m_back = this;
hook->m_owner = menu;
::set_menu_userptr(menu,(void*)hook);
::set_menu_init (menu, NCursesMenu::mnu_init);
::set_menu_term (menu, NCursesMenu::mnu_term);
::set_item_init (menu, NCursesMenu::itm_init);
::set_item_term (menu, NCursesMenu::itm_term);
scale(mrows, mcols);
::set_menu_win(menu, w);
if (with_frame) {
if ((mrows > height()-2) || (mcols > width()-2))
OnError(E_NO_ROOM);
sub = new NCursesWindow(*this,mrows,mcols,1,1,'r');
::set_menu_sub(menu, sub->w);
b_sub_owner = TRUE;
}
else {
sub = (NCursesWindow*)0;
b_sub_owner = FALSE;
}
setDefaultAttributes();
}
void
NCursesMenu::setDefaultAttributes() {
NCursesApplication* S = NCursesApplication::getApplication();
if (S) {
::set_menu_fore(menu, S->foregrounds());
::set_menu_back(menu, S->backgrounds());
::set_menu_grey(menu, S->inactives());
}
}
NCursesMenu::~NCursesMenu() {
UserHook* hook = (UserHook*)::menu_userptr(menu);
delete hook;
if (b_sub_owner) {
delete sub;
::set_menu_sub(menu,(WINDOW *)0);
}
if (menu) {
ITEM** itms = ::menu_items(menu);
int cnt = count();
OnError(::set_menu_items(menu,(ITEM**)0));
if (b_autoDelete) {
if (cnt>0) {
for (int i=0; i <= cnt; i++)
delete my_items[i];
}
delete[] my_items;
}
::free_menu(menu);
// It's essential to do this after free_menu()
delete[] itms;
}
}
void
NCursesMenu::setSubWindow(NCursesWindow& nsub) {
if (!isDescendant(nsub))
OnError(E_SYSTEM_ERROR);
else {
if (b_sub_owner)
delete sub;
sub = &nsub;
::set_menu_sub(menu,sub->w);
}
}
bool
NCursesMenu::set_pattern (const char *pat) {
int res = ::set_menu_pattern (menu, pat);
switch(res) {
case E_OK:
break;
case E_NO_MATCH:
return FALSE;
default:
OnError (res);
}
return TRUE;
}
// call the menu driver and do basic error checking.
int
NCursesMenu::driver (int c) {
int res = ::menu_driver (menu, c);
switch (res) {
case E_OK:
case E_REQUEST_DENIED:
case E_NOT_SELECTABLE:
case E_UNKNOWN_COMMAND:
case E_NO_MATCH:
break;
default:
OnError (res);
}
return (res);
}
static const int CMD_QUIT = MAX_COMMAND + 1;
static const int CMD_ACTION = MAX_COMMAND + 2;
//
// -------------------------------------------------------------------------
// Provide a default key virtualization. Translate the keyboard
// code c into a menu request code.
// The default implementation provides a hopefully straightforward
// mapping for the most common keystrokes and menu requests.
// -------------------------------------------------------------------------
int
NCursesMenu::virtualize(int c) {
switch(c) {
case CTRL('X') : return(CMD_QUIT); // eXit
case KEY_DOWN : return(REQ_DOWN_ITEM);
case CTRL('N') : return(REQ_NEXT_ITEM); // Next
case KEY_UP : return(REQ_UP_ITEM);
case CTRL('P') : return(REQ_PREV_ITEM); // Previous
case CTRL('U') : return(REQ_SCR_ULINE); // Up
case CTRL('D') : return(REQ_SCR_DLINE); // Down
case CTRL('F') : return(REQ_SCR_DPAGE); // Forward
case CTRL('B') : return(REQ_SCR_UPAGE); // Backward
case CTRL('Y') : return(REQ_CLEAR_PATTERN);
case CTRL('H') : return(REQ_BACK_PATTERN);
case CTRL('A') : return(REQ_NEXT_MATCH);
case CTRL('E') : return(REQ_PREV_MATCH);
case CTRL('T') : return(REQ_TOGGLE_ITEM);
case CTRL('J') :
case CTRL('M') : return(CMD_ACTION);
case KEY_HOME : return(REQ_FIRST_ITEM);
case KEY_LEFT : return(REQ_LEFT_ITEM);
case KEY_RIGHT : return(REQ_RIGHT_ITEM);
case KEY_END : return(REQ_LAST_ITEM);
case KEY_BACKSPACE : return(REQ_BACK_PATTERN);
case KEY_NPAGE : return(REQ_SCR_DPAGE);
case KEY_PPAGE : return(REQ_SCR_UPAGE);
default:
return(c);
}
}
NCursesMenuItem*
NCursesMenu::operator()(void) {
int drvCmnd;
int err;
int c;
bool b_action = FALSE;
post();
show();
refresh();
while (!b_action && ((drvCmnd = virtualize((c=getch()))) != CMD_QUIT)) {
switch((err=driver(drvCmnd))) {
case E_REQUEST_DENIED:
On_Request_Denied(c);
break;
case E_NOT_SELECTABLE:
On_Not_Selectable(c);
break;
case E_UNKNOWN_COMMAND:
if (drvCmnd == CMD_ACTION) {
if (options() & O_ONEVALUE) {
NCursesMenuItem* itm = current_item();
assert(itm);
if (itm->options() & O_SELECTABLE)
{
b_action = itm->action();
refresh();
}
else
On_Not_Selectable(c);
}
else {
int n = count();
for(int i=0; i<n; i++) {
NCursesMenuItem* itm = my_items[i];
if (itm->value()) {
b_action |= itm->action();
refresh();
}
}
}
} else
On_Unknown_Command(c);
break;
case E_NO_MATCH:
On_No_Match(c);
break;
case E_OK:
break;
default:
OnError(err);
}
}
unpost();
hide();
refresh();
if (options() & O_ONEVALUE)
return my_items[::item_index (::current_item (menu))];
else
return NULL;
}
void
NCursesMenu::On_Menu_Init() {
}
void
NCursesMenu::On_Menu_Termination() {
}
void
NCursesMenu::On_Item_Init(NCursesMenuItem& item) {
}
void
NCursesMenu::On_Item_Termination(NCursesMenuItem& item) {
}
void
NCursesMenu::On_Request_Denied(int c) const {
beep();
}
void
NCursesMenu::On_Not_Selectable(int c) const {
beep();
}
void
NCursesMenu::On_No_Match(int c) const {
beep();
}
void
NCursesMenu::On_Unknown_Command(int c) const {
beep();
}
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