msgbox.c revision 244850 
1/*
2 *  $Id: msgbox.c,v 1.66 2011/06/27 08:36:28 tom Exp $
3 *
4 *  msgbox.c -- implements the message box and info box
5 *
6 *  Copyright 2000-2010,2011	Thomas E. Dickey
7 *
8 *  This program is free software; you can redistribute it and/or modify
9 *  it under the terms of the GNU Lesser General Public License, version 2.1
10 *  as published by the Free Software Foundation.
11 *
12 *  This program is distributed in the hope that it will be useful, but
13 *  WITHOUT ANY WARRANTY; without even the implied warranty of
14 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15 *  Lesser General Public License for more details.
16 *
17 *  You should have received a copy of the GNU Lesser General Public
18 *  License along with this program; if not, write to
19 *	Free Software Foundation, Inc.
20 *	51 Franklin St., Fifth Floor
21 *	Boston, MA 02110, USA.
22 *
23 *  An earlier version of this program lists as authors:
24 *	Savio Lam (lam836@cs.cuhk.hk)
25 */
26
27#include <dialog.h>
28#include <dlg_keys.h>
29
30/*
31 * Display a message box. Program will pause and display an "OK" button
32 * if the parameter 'pauseopt' is non-zero.
33 */
34int
35dialog_msgbox(const char *title, const char *cprompt, int height, int width,
36	      int pauseopt)
37{
38    /* *INDENT-OFF* */
39    static DLG_KEYS_BINDING binding[] = {
40	HELPKEY_BINDINGS,
41	ENTERKEY_BINDINGS,
42	DLG_KEYS_DATA( DLGK_ENTER,	' ' ),
43	SCROLLKEY_BINDINGS,
44	DLG_KEYS_DATA( DLGK_FIELD_NEXT,	KEY_DOWN ),
45	DLG_KEYS_DATA( DLGK_FIELD_NEXT, KEY_RIGHT ),
46	DLG_KEYS_DATA( DLGK_FIELD_NEXT, TAB ),
47	DLG_KEYS_DATA( DLGK_FIELD_PREV,	KEY_UP ),
48	DLG_KEYS_DATA( DLGK_FIELD_PREV, KEY_BTAB ),
49	DLG_KEYS_DATA( DLGK_FIELD_PREV, KEY_LEFT ),
50	END_KEYS_BINDING
51    };
52    /* *INDENT-ON* */
53
54    int x, y, last = 0, page;
55    int button = 0;
56    int key = 0, fkey;
57    int result = DLG_EXIT_UNKNOWN;
58    WINDOW *dialog = 0;
59    char *prompt = dlg_strclone(cprompt);
60    const char **buttons = dlg_ok_label();
61    int offset = 0;
62    int check;
63    bool show = TRUE;
64    int min_width = (pauseopt == 1 ? 12 : 0);
65
66#ifdef KEY_RESIZE
67    int req_high = height;
68    int req_wide = width;
69  restart:
70#endif
71
72    dlg_button_layout(buttons, &min_width);
73
74    dlg_tab_correct_str(prompt);
75    dlg_auto_size(title, prompt, &height, &width,
76		  (pauseopt == 1 ? 2 : 0),
77		  min_width);
78    dlg_print_size(height, width);
79    dlg_ctl_size(height, width);
80
81    x = dlg_box_x_ordinate(width);
82    y = dlg_box_y_ordinate(height);
83
84#ifdef KEY_RESIZE
85    if (dialog != 0)
86	dlg_move_window(dialog, height, width, y, x);
87    else
88#endif
89    {
90	dialog = dlg_new_window(height, width, y, x);
91	dlg_register_window(dialog, "msgbox", binding);
92	dlg_register_buttons(dialog, "msgbox", buttons);
93    }
94    page = height - (1 + 3 * MARGIN);
95
96    dlg_mouse_setbase(x, y);
97
98    dlg_draw_box(dialog, 0, 0, height, width, dialog_attr, border_attr);
99    dlg_draw_title(dialog, title);
100
101    wattrset(dialog, dialog_attr);
102
103    if (pauseopt) {
104	dlg_draw_bottom_box(dialog);
105	mouse_mkbutton(height - 2, width / 2 - 4, 6, '\n');
106	dlg_draw_buttons(dialog, height - 2, 0, buttons, button, FALSE, width);
107	dlg_draw_helpline(dialog, FALSE);
108
109	while (result == DLG_EXIT_UNKNOWN) {
110	    if (show) {
111		last = dlg_print_scrolled(dialog, prompt, offset,
112					  page, width, pauseopt);
113		show = FALSE;
114	    }
115	    key = dlg_mouse_wgetch(dialog, &fkey);
116	    if (dlg_result_key(key, fkey, &result))
117		break;
118
119	    if (!fkey && (check = dlg_char_to_button(key, buttons)) >= 0) {
120		result = check ? DLG_EXIT_HELP : DLG_EXIT_OK;
121		break;
122	    }
123
124	    if (fkey) {
125		switch (key) {
126#ifdef KEY_RESIZE
127		case KEY_RESIZE:
128		    dlg_clear();
129		    height = req_high;
130		    width = req_wide;
131		    show = TRUE;
132		    goto restart;
133#endif
134		case DLGK_FIELD_NEXT:
135		    button = dlg_next_button(buttons, button);
136		    if (button < 0)
137			button = 0;
138		    dlg_draw_buttons(dialog,
139				     height - 2, 0,
140				     buttons, button,
141				     FALSE, width);
142		    break;
143		case DLGK_FIELD_PREV:
144		    button = dlg_prev_button(buttons, button);
145		    if (button < 0)
146			button = 0;
147		    dlg_draw_buttons(dialog,
148				     height - 2, 0,
149				     buttons, button,
150				     FALSE, width);
151		    break;
152		case DLGK_ENTER:
153		    result = button ? DLG_EXIT_HELP : DLG_EXIT_OK;
154		    break;
155		case DLGK_MOUSE(0):
156		    result = DLG_EXIT_OK;
157		    break;
158		case DLGK_MOUSE(1):
159		    result = DLG_EXIT_HELP;
160		    break;
161		default:
162		    if (dlg_check_scrolled(key,
163					   last,
164					   page,
165					   &show,
166					   &offset) == 0)
167			break;
168		    beep();
169		    break;
170		}
171	    } else {
172		beep();
173	    }
174	}
175    } else {
176	dlg_print_scrolled(dialog, prompt, offset, page, width, pauseopt);
177	dlg_draw_helpline(dialog, FALSE);
178	wrefresh(dialog);
179	result = DLG_EXIT_OK;
180    }
181
182    dlg_del_window(dialog);
183    dlg_mouse_free_regions();
184    free(prompt);
185    return result;
186}
187