source: trunk/essentials/sys-libs/ncurses/c++/cursesm.cc@ 3180

Last change on this file since 3180 was 2621, checked in by bird, 20 years ago

GNU ncurses 5.5
File size: 9.7 KB
Line 
1// * this is for making emacs happy: -*-Mode: C++;-*-
2/****************************************************************************
3 * Copyright (c) 1998-2003,2005 Free Software Foundation, Inc. *
4 * *
5 * Permission is hereby granted, free of charge, to any person obtaining a *
6 * copy of this software and associated documentation files (the *
7 * "Software"), to deal in the Software without restriction, including *
8 * without limitation the rights to use, copy, modify, merge, publish, *
9 * distribute, distribute with modifications, sublicense, and/or sell *
10 * copies of the Software, and to permit persons to whom the Software is *
11 * furnished to do so, subject to the following conditions: *
12 * *
13 * The above copyright notice and this permission notice shall be included *
14 * in all copies or substantial portions of the Software. *
15 * *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
19 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
21 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
22 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
23 * *
24 * Except as contained in this notice, the name(s) of the above copyright *
25 * holders shall not be used in advertising or otherwise to promote the *
26 * sale, use or other dealings in this Software without prior written *
27 * authorization. *
28 ****************************************************************************/
29
30/****************************************************************************
31 * Author: Juergen Pfeifer, 1997 *
32 ****************************************************************************/
33
34#include "internal.h"
35#include "cursesm.h"
36#include "cursesapp.h"
37
38MODULE_ID("$Id: cursesm.cc,v 1.22 2005/04/02 20:39:05 tom Exp $")
39
40NCursesMenuItem::~NCursesMenuItem()
41{
42 if (item)
43 OnError(::free_item(item));
44}
45
46bool
47NCursesMenuItem::action()
48{
49 return FALSE;
50}
51
52NCursesMenuCallbackItem::~NCursesMenuCallbackItem()
53{
54}
55
56bool
57NCursesMenuCallbackItem::action()
58{
59 if (p_fct)
60 return p_fct (*this);
61 else
62 return FALSE;
63}
64
65/* Internal hook functions. They will route the hook
66 * calls to virtual methods of the NCursesMenu class,
67 * so in C++ providing a hook is done simply by
68 * implementing a virtual method in a derived class
69 */
70void
71_nc_xx_mnu_init(MENU *m)
72{
73 NCursesMenu::getHook(m)->On_Menu_Init();
74}
75
76void
77_nc_xx_mnu_term(MENU *m)
78{
79 NCursesMenu::getHook(m)->On_Menu_Termination();
80}
81
82void
83_nc_xx_itm_init(MENU *m)
84{
85 NCursesMenu* M = NCursesMenu::getHook(m);
86 M->On_Item_Init (*(M->current_item ()));
87}
88
89void
90_nc_xx_itm_term(MENU *m)
91{
92 NCursesMenu* M = NCursesMenu::getHook(m);
93 M->On_Item_Termination (*(M->current_item ()));
94}
95
96/* Construct an ITEM* array from an array of NCursesMenuItem
97 * objects.
98 */
99ITEM**
100NCursesMenu::mapItems(NCursesMenuItem* nitems[])
101{
102 int itemCount = 0,lcv;
103
104 for (lcv=0; nitems[lcv]->item; ++lcv)
105 ++itemCount;
106
107 ITEM** itemArray = new ITEM*[itemCount + 1];
108
109 for (lcv=0;nitems[lcv]->item;++lcv) {
110 itemArray[lcv] = nitems[lcv]->item;
111 }
112 itemArray[lcv] = NULL;
113
114 my_items = nitems;
115
116 if (menu)
117 delete[] ::menu_items(menu);
118 return itemArray;
119}
120
121void
122NCursesMenu::InitMenu(NCursesMenuItem* nitems[],
123 bool with_frame,
124 bool autoDelete_Items)
125{
126 int mrows, mcols;
127
128 keypad(TRUE);
129 meta(TRUE);
130
131 b_framed = with_frame;
132 b_autoDelete = autoDelete_Items;
133
134 menu = static_cast<MENU*>(0);
135 menu = ::new_menu(mapItems(nitems));
136 if (!menu)
137 OnError (E_SYSTEM_ERROR);
138
139 UserHook* hook = new UserHook;
140 hook->m_user = NULL;
141 hook->m_back = this;
142 hook->m_owner = menu;
143 ::set_menu_userptr(menu, static_cast<void*>(hook));
144
145 ::set_menu_init (menu, _nc_xx_mnu_init);
146 ::set_menu_term (menu, _nc_xx_mnu_term);
147 ::set_item_init (menu, _nc_xx_itm_init);
148 ::set_item_term (menu, _nc_xx_itm_term);
149
150 scale(mrows, mcols);
151 ::set_menu_win(menu, w);
152
153 if (with_frame) {
154 if ((mrows > height()-2) || (mcols > width()-2))
155 OnError(E_NO_ROOM);
156 sub = new NCursesWindow(*this,mrows,mcols,1,1,'r');
157 ::set_menu_sub(menu, sub->w);
158 b_sub_owner = TRUE;
159 }
160 else {
161 sub = static_cast<NCursesWindow*>(0);
162 b_sub_owner = FALSE;
163 }
164 setDefaultAttributes();
165}
166
167void
168NCursesMenu::setDefaultAttributes()
169{
170 NCursesApplication* S = NCursesApplication::getApplication();
171 if (S) {
172 ::set_menu_fore(menu, S->foregrounds());
173 ::set_menu_back(menu, S->backgrounds());
174 ::set_menu_grey(menu, S->inactives());
175 }
176}
177
178NCursesMenu::~NCursesMenu()
179{
180 UserHook* hook = reinterpret_cast<UserHook*>(::menu_userptr(menu));
181 delete hook;
182 if (b_sub_owner) {
183 delete sub;
184 ::set_menu_sub(menu, static_cast<WINDOW *>(0));
185 }
186 if (menu) {
187 ITEM** itms = ::menu_items(menu);
188 int cnt = count();
189
190 OnError(::set_menu_items(menu, static_cast<ITEM**>(0)));
191
192 if (b_autoDelete) {
193 if (cnt>0) {
194 for (int i=0; i <= cnt; i++)
195 delete my_items[i];
196 }
197 delete[] my_items;
198 }
199
200 ::free_menu(menu);
201 // It's essential to do this after free_menu()
202 delete[] itms;
203 }
204}
205
206void
207NCursesMenu::setSubWindow(NCursesWindow& nsub)
208{
209 if (!isDescendant(nsub))
210 OnError(E_SYSTEM_ERROR);
211 else {
212 if (b_sub_owner)
213 delete sub;
214 sub = &nsub;
215 ::set_menu_sub(menu,sub->w);
216 }
217}
218
219bool
220NCursesMenu::set_pattern (const char *pat)
221{
222 int res = ::set_menu_pattern (menu, pat);
223 switch(res) {
224 case E_OK:
225 break;
226 case E_NO_MATCH:
227 return FALSE;
228 default:
229 OnError (res);
230 }
231 return TRUE;
232}
233
234// call the menu driver and do basic error checking.
235int
236NCursesMenu::driver (int c)
237{
238 int res = ::menu_driver (menu, c);
239 switch (res) {
240 case E_OK:
241 case E_REQUEST_DENIED:
242 case E_NOT_SELECTABLE:
243 case E_UNKNOWN_COMMAND:
244 case E_NO_MATCH:
245 break;
246 default:
247 OnError (res);
248 }
249 return (res);
250}
251
252static const int CMD_QUIT = MAX_COMMAND + 1;
253static const int CMD_ACTION = MAX_COMMAND + 2;
254//
255// -------------------------------------------------------------------------
256// Provide a default key virtualization. Translate the keyboard
257// code c into a menu request code.
258// The default implementation provides a hopefully straightforward
259// mapping for the most common keystrokes and menu requests.
260// -------------------------------------------------------------------------
261int
262NCursesMenu::virtualize(int c)
263{
264 switch(c) {
265 case CTRL('X') : return(CMD_QUIT); // eXit
266
267 case KEY_DOWN : return(REQ_DOWN_ITEM);
268 case CTRL('N') : return(REQ_NEXT_ITEM); // Next
269 case KEY_UP : return(REQ_UP_ITEM);
270 case CTRL('P') : return(REQ_PREV_ITEM); // Previous
271
272 case CTRL('U') : return(REQ_SCR_ULINE); // Up
273 case CTRL('D') : return(REQ_SCR_DLINE); // Down
274 case CTRL('F') : return(REQ_SCR_DPAGE); // Forward
275 case CTRL('B') : return(REQ_SCR_UPAGE); // Backward
276
277 case CTRL('Y') : return(REQ_CLEAR_PATTERN);
278 case CTRL('H') : return(REQ_BACK_PATTERN);
279 case CTRL('A') : return(REQ_NEXT_MATCH);
280 case CTRL('E') : return(REQ_PREV_MATCH);
281 case CTRL('T') : return(REQ_TOGGLE_ITEM);
282
283 case CTRL('J') :
284 case CTRL('M') : return(CMD_ACTION);
285
286 case KEY_HOME : return(REQ_FIRST_ITEM);
287 case KEY_LEFT : return(REQ_LEFT_ITEM);
288 case KEY_RIGHT : return(REQ_RIGHT_ITEM);
289 case KEY_END : return(REQ_LAST_ITEM);
290 case KEY_BACKSPACE : return(REQ_BACK_PATTERN);
291 case KEY_NPAGE : return(REQ_SCR_DPAGE);
292 case KEY_PPAGE : return(REQ_SCR_UPAGE);
293
294 default:
295 return(c);
296 }
297}
298
299NCursesMenuItem*
300NCursesMenu::operator()(void)
301{
302 int drvCmnd;
303 int err;
304 int c;
305 bool b_action = FALSE;
306
307 post();
308 show();
309 refresh();
310
311 while (!b_action && ((drvCmnd = virtualize((c=getKey()))) != CMD_QUIT)) {
312
313 switch((err=driver(drvCmnd))) {
314 case E_REQUEST_DENIED:
315 On_Request_Denied(c);
316 break;
317 case E_NOT_SELECTABLE:
318 On_Not_Selectable(c);
319 break;
320 case E_UNKNOWN_COMMAND:
321 if (drvCmnd == CMD_ACTION) {
322 if (options() & O_ONEVALUE) {
323 NCursesMenuItem* itm = current_item();
324 assert(itm != 0);
325 if (itm->options() & O_SELECTABLE)
326 {
327 b_action = itm->action();
328 refresh();
329 }
330 else
331 On_Not_Selectable(c);
332 }
333 else {
334 int n = count();
335 for(int i=0; i<n; i++) {
336 NCursesMenuItem* itm = my_items[i];
337 if (itm->value()) {
338 b_action |= itm->action();
339 refresh();
340 }
341 }
342 }
343 } else
344 On_Unknown_Command(c);
345 break;
346 case E_NO_MATCH:
347 On_No_Match(c);
348 break;
349 case E_OK:
350 break;
351 default:
352 OnError(err);
353 }
354 }
355
356 unpost();
357 hide();
358 refresh();
359 if (options() & O_ONEVALUE)
360 return my_items[::item_index (::current_item (menu))];
361 else
362 return NULL;
363}
364
365void
366NCursesMenu::On_Menu_Init()
367{
368}
369
370void
371NCursesMenu::On_Menu_Termination()
372{
373}
374
375void
376NCursesMenu::On_Item_Init(NCursesMenuItem& item)
377{
378}
379
380void
381NCursesMenu::On_Item_Termination(NCursesMenuItem& item)
382{
383}
384
385void
386NCursesMenu::On_Request_Denied(int c) const
387{
388 ::beep();
389}
390
391void
392NCursesMenu::On_Not_Selectable(int c) const
393{
394 ::beep();
395}
396
397void
398NCursesMenu::On_No_Match(int c) const
399{
400 ::beep();
401}
402
403void
404NCursesMenu::On_Unknown_Command(int c) const
405{
406 ::beep();
407}
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