inputbox.c revision 52bf5abd924bc78494905f16ffbd4bd67062240c
1/*
2 *  $Id: inputbox.c,v 1.67 2011/06/29 09:48:34 tom Exp $
3 *
4 *  inputbox.c -- implements the input 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#define sTEXT -1
31
32#define NAVIGATE_BINDINGS \
33	DLG_KEYS_DATA( DLGK_FIELD_NEXT,	KEY_DOWN ), \
34	DLG_KEYS_DATA( DLGK_FIELD_NEXT,	KEY_RIGHT ), \
35	DLG_KEYS_DATA( DLGK_FIELD_NEXT,	TAB ), \
36	DLG_KEYS_DATA( DLGK_FIELD_PREV,	KEY_BTAB ), \
37	DLG_KEYS_DATA( DLGK_FIELD_PREV,	KEY_LEFT ), \
38	DLG_KEYS_DATA( DLGK_FIELD_PREV,	KEY_UP )
39
40/*
41 * Display a dialog box for entering a string
42 */
43int
44dialog_inputbox(const char *title, const char *cprompt, int height, int width,
45		const char *init, const int password)
46{
47    /* *INDENT-OFF* */
48    static DLG_KEYS_BINDING binding[] = {
49	HELPKEY_BINDINGS,
50	ENTERKEY_BINDINGS,
51	NAVIGATE_BINDINGS,
52	END_KEYS_BINDING
53    };
54    static DLG_KEYS_BINDING binding2[] = {
55	INPUTSTR_BINDINGS,
56	HELPKEY_BINDINGS,
57	ENTERKEY_BINDINGS,
58	NAVIGATE_BINDINGS,
59	END_KEYS_BINDING
60    };
61    /* *INDENT-ON* */
62
63#ifdef KEY_RESIZE
64    int old_height = height;
65    int old_width = width;
66#endif
67    int xorg, yorg;
68    int x, y, box_y, box_x, box_width;
69    int show_buttons;
70    int col_offset = 0;
71    int chr_offset = 0;
72    int key, fkey, code;
73    int result = DLG_EXIT_UNKNOWN;
74    int state;
75    int first;
76    char *input;
77    WINDOW *dialog;
78    WINDOW *editor;
79    char *prompt = dlg_strclone(cprompt);
80    const char **buttons = dlg_ok_labels();
81
82    dlg_does_output();
83
84    dlg_tab_correct_str(prompt);
85
86    /* Set up the initial value */
87    input = dlg_set_result(init);
88
89#ifdef KEY_RESIZE
90  retry:
91#endif
92    show_buttons = TRUE;
93    state = dialog_vars.defaultno ? dlg_defaultno_button() : sTEXT;
94    first = (state == sTEXT);
95    key = fkey = 0;
96
97    if (init != NULL) {
98	dlg_auto_size(title, prompt, &height, &width, 5,
99		      MIN(MAX(dlg_count_columns(init) + 7, 26),
100			  SCOLS - (dialog_vars.begin_set ?
101				   dialog_vars.begin_x : 0)));
102	chr_offset = (int) strlen(init);
103    } else {
104	dlg_auto_size(title, prompt, &height, &width, 5, 26);
105    }
106    dlg_button_layout(buttons, &width);
107    dlg_print_size(height, width);
108    dlg_ctl_size(height, width);
109
110    xorg = dlg_box_x_ordinate(width);
111    yorg = dlg_box_y_ordinate(height);
112
113    dialog = dlg_new_window(height, width, yorg, xorg);
114    dlg_register_window(dialog, "inputbox", binding);
115    dlg_register_buttons(dialog, "inputbox", buttons);
116
117    dlg_mouse_setbase(xorg, yorg);
118
119    dlg_draw_box(dialog, 0, 0, height, width, dialog_attr, border_attr);
120    dlg_draw_bottom_box(dialog);
121    dlg_draw_title(dialog, title);
122
123    wattrset(dialog, dialog_attr);
124    dlg_draw_helpline(dialog, FALSE);
125    dlg_print_autowrap(dialog, prompt, height, width);
126
127    /* Draw the input field box */
128    box_width = width - 6;
129    getyx(dialog, y, x);
130    box_y = y + 2;
131    box_x = (width - box_width) / 2;
132    dlg_mouse_mkregion(y + 1, box_x - 1, 3, box_width + 2, 'i');
133    dlg_draw_box(dialog, y + 1, box_x - 1, 3, box_width + 2,
134		 border_attr, dialog_attr);
135
136    /* Make a window for the input-field, to associate bindings */
137    editor = dlg_sub_window(dialog, 1, box_width, yorg + box_y, xorg + box_x);
138    dlg_register_window(editor, "inputbox", binding2);
139
140    while (result == DLG_EXIT_UNKNOWN) {
141	int edit = 0;
142
143	/*
144	 * The last field drawn determines where the cursor is shown:
145	 */
146	if (show_buttons) {
147	    show_buttons = FALSE;
148	    col_offset = dlg_edit_offset(input, chr_offset, box_width);
149	    (void) wmove(dialog, box_y, box_x + col_offset);
150	    dlg_draw_buttons(dialog, height - 2, 0, buttons, state, FALSE, width);
151	}
152
153	if (!first) {
154	    key = dlg_mouse_wgetch((state == sTEXT) ? editor : dialog, &fkey);
155	    if (dlg_result_key(key, fkey, &result))
156		break;
157	}
158
159	/*
160	 * Handle mouse clicks first, since we want to know if this is a button,
161	 * or something that dlg_edit_string() should handle.
162	 */
163	if (fkey
164	    && is_DLGK_MOUSE(key)
165	    && (code = dlg_ok_buttoncode(key - M_EVENT)) >= 0) {
166	    result = code;
167	    continue;
168	}
169
170	if (state == sTEXT) {	/* Input box selected */
171	    edit = dlg_edit_string(input, &chr_offset, key, fkey, first);
172
173	    if (edit) {
174		dlg_show_string(dialog, input, chr_offset, inputbox_attr,
175				box_y, box_x, box_width, password, first);
176		first = FALSE;
177		continue;
178	    } else if (first) {
179		first = FALSE;
180		continue;
181	    }
182	}
183
184	/* handle non-functionkeys */
185	if (!fkey && (code = dlg_char_to_button(key, buttons)) >= 0) {
186	    dlg_del_window(dialog);
187	    result = dlg_ok_buttoncode(code);
188	    continue;
189	}
190
191	/* handle functionkeys */
192	if (fkey) {
193	    switch (key) {
194	    case DLGK_MOUSE('i'):	/* mouse enter events */
195		state = 0;
196		/* FALLTHRU */
197	    case DLGK_FIELD_PREV:
198		show_buttons = TRUE;
199		state = dlg_prev_ok_buttonindex(state, sTEXT);
200		break;
201	    case DLGK_FIELD_NEXT:
202		show_buttons = TRUE;
203		state = dlg_next_ok_buttonindex(state, sTEXT);
204		break;
205	    case ' ':		/* FIXME: conflict with inputstr.c */
206	    case DLGK_ENTER:
207		dlg_del_window(dialog);
208		result = (state >= 0) ? dlg_enter_buttoncode(state) : DLG_EXIT_OK;
209		break;
210#ifdef KEY_RESIZE
211	    case KEY_RESIZE:
212		/* reset data */
213		height = old_height;
214		width = old_width;
215		/* repaint */
216		dlg_clear();
217		dlg_del_window(dialog);
218		refresh();
219		dlg_mouse_free_regions();
220		goto retry;
221#endif
222	    default:
223		beep();
224		break;
225	    }
226	} else {
227	    beep();
228	}
229    }
230
231    dlg_unregister_window(editor);
232    dlg_del_window(dialog);
233    dlg_mouse_free_regions();
234    free(prompt);
235    return result;
236}
237