git.ozlabs.org Git - petitboot/blob - ui/ncurses/nc-add-url.c

   1 /*
   2  *  Copyright (C) 2013 IBM Corporation
   3  *
   4  *  This program is free software; you can redistribute it and/or modify
   5  *  it under the terms of the GNU General Public License as published by
   6  *  the Free Software Foundation; version 2 of the License.
   7  *
   8  *  This program is distributed in the hope that it will be useful,
   9  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  *  GNU General Public License for more details.
  12  *
  13  *  You should have received a copy of the GNU General Public License
  14  *  along with this program; if not, write to the Free Software
  15  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  16  */
  17
  18 #if defined(HAVE_CONFIG_H)
  19 #include "config.h"
  20 #endif
  21
  22 #include <errno.h>
  23 #include <stdlib.h>
  24 #include <string.h>
  25
  26 #include <talloc/talloc.h>
  27 #include <types/types.h>
  28 #include <i18n/i18n.h>
  29 #include <log/log.h>
  30
  31 #include "nc-cui.h"
  32 #include "nc-add-url.h"
  33 #include "nc-widgets.h"
  34
  35 #define N_FIELDS        5
  36
  37 extern const struct help_text add_url_help_text;
  38
  39 struct add_url_screen {
  40         struct nc_scr           scr;
  41         struct cui              *cui;
  42         struct nc_widgetset     *widgetset;
  43
  44         bool                    exit;
  45         bool                    show_help;
  46         void                    (*on_exit)(struct cui *);
  47
  48         int                     label_x;
  49         int                     field_x;
  50
  51         struct {
  52                 struct nc_widget_textbox        *url_f;
  53                 struct nc_widget_label          *url_l;
  54
  55                 struct nc_widget_button         *ok_b;
  56                 struct nc_widget_button         *help_b;
  57                 struct nc_widget_button         *cancel_b;
  58         } widgets;
  59 };
  60
  61 static struct add_url_screen *add_url_screen_from_scr(struct nc_scr *scr)
  62 {
  63         struct add_url_screen *add_url_screen;
  64
  65         assert(scr->sig == pb_add_url_screen_sig);
  66         add_url_screen = (struct add_url_screen *)
  67                 ((char *)scr - (size_t)&((struct add_url_screen *)0)->scr);
  68         assert(add_url_screen->scr.sig == pb_add_url_screen_sig);
  69         return add_url_screen;
  70 }
  71
  72 static void add_url_screen_process_key(struct nc_scr *scr, int key)
  73 {
  74         struct add_url_screen *screen = add_url_screen_from_scr(scr);
  75         bool handled;
  76
  77         handled = widgetset_process_key(screen->widgetset, key);
  78
  79         if (!handled) {
  80                 switch (key) {
  81                 case 'x':
  82                 case 27: /* esc */
  83                         screen->exit = true;
  84                         break;
  85                 case 'h':
  86                         screen->show_help = true;
  87                         break;
  88                 }
  89         }
  90
  91         if (screen->exit) {
  92                 screen->on_exit(screen->cui);
  93
  94         } else if (screen->show_help) {
  95                 screen->show_help = false;
  96                 cui_show_help(screen->cui, _("Retrieve Config"),
  97                         &add_url_help_text);
  98
  99         } else if (handled) {
 100                 wrefresh(screen->scr.main_ncw);
 101         }
 102 }
 103
 104 static int add_url_screen_post(struct nc_scr *scr)
 105 {
 106         struct add_url_screen *screen = add_url_screen_from_scr(scr);
 107         widgetset_post(screen->widgetset);
 108         nc_scr_frame_draw(scr);
 109         redrawwin(scr->main_ncw);
 110         wrefresh(screen->scr.main_ncw);
 111         return 0;
 112 }
 113
 114 static int add_url_screen_unpost(struct nc_scr *scr)
 115 {
 116         struct add_url_screen *screen = add_url_screen_from_scr(scr);
 117         widgetset_unpost(screen->widgetset);
 118         return 0;
 119 }
 120
 121 struct nc_scr *add_url_screen_scr(struct add_url_screen *screen)
 122 {
 123         return &screen->scr;
 124 }
 125
 126 static int screen_process_form(struct add_url_screen *screen)
 127 {
 128         char *url;
 129         int rc;
 130
 131         url = widget_textbox_get_value(screen->widgets.url_f);
 132         if (!url || !strlen(url))
 133                 return 0;
 134
 135         /* Once we have all the info we need, tell the server */
 136         rc = cui_send_url(screen->cui, url);
 137
 138         if (rc)
 139                 pb_log("cui_send_retreive failed!\n");
 140         else
 141                 pb_debug("add_url url sent!\n");
 142         return 0;
 143 }
 144
 145 static void ok_click(void *arg)
 146 {
 147         struct add_url_screen *screen = arg;
 148         if (screen_process_form(screen))
 149                 /* errors are written to the status line, so we'll need
 150                  * to refresh */
 151                 wrefresh(screen->scr.main_ncw);
 152         else
 153                 screen->exit = true;
 154 }
 155
 156 static void help_click(void *arg)
 157 {
 158         struct add_url_screen *screen = arg;
 159         screen->show_help = true;
 160 }
 161
 162 static void cancel_click(void *arg)
 163 {
 164         struct add_url_screen *screen = arg;
 165         screen->exit = true;
 166 }
 167
 168 static int layout_pair(struct add_url_screen *screen, int y,
 169         struct nc_widget_label *label,
 170         struct nc_widget *field)
 171 {
 172         struct nc_widget *label_w = widget_label_base(label);
 173         widget_move(label_w, y, screen->label_x);
 174         widget_move(field, y, screen->field_x);
 175         return max(widget_height(label_w), widget_height(field));
 176 }
 177
 178 static void add_url_screen_layout_widgets(struct add_url_screen *screen)
 179 {
 180         int y = 2;
 181
 182         /* url field */
 183         y += layout_pair(screen, y, screen->widgets.url_l,
 184                          widget_textbox_base(screen->widgets.url_f));
 185
 186         /* ok, help, cancel */
 187         y += 1;
 188
 189         widget_move(widget_button_base(screen->widgets.ok_b),
 190                 y, screen->field_x);
 191         widget_move(widget_button_base(screen->widgets.help_b),
 192                 y, screen->field_x + 10);
 193         widget_move(widget_button_base(screen->widgets.cancel_b),
 194                 y, screen->field_x + 23);
 195 }
 196
 197 static void add_url_screen_setup_widgets(struct add_url_screen *screen)
 198 {
 199         struct nc_widgetset *set = screen->widgetset;
 200
 201         build_assert(sizeof(screen->widgets) / sizeof(struct widget *)
 202                         == N_FIELDS);
 203
 204         screen->widgets.url_l = widget_new_label(set, 0, 0,
 205                         _("Configuration URL:"));
 206         screen->widgets.url_f = widget_new_textbox(set, 0, 0, 50, NULL);
 207
 208         screen->widgets.ok_b = widget_new_button(set, 0, 0, 6, _("OK"),
 209                         ok_click, screen);
 210         screen->widgets.help_b = widget_new_button(set, 0, 0, 9, _("Help"),
 211                         help_click, screen);
 212         screen->widgets.cancel_b = widget_new_button(set, 0, 0, 9, _("Cancel"),
 213                         cancel_click, screen);
 214 }
 215
 216 struct add_url_screen *add_url_screen_init(struct cui *cui,
 217                 void (*on_exit)(struct cui *))
 218 {
 219         struct add_url_screen *screen;
 220
 221         screen = talloc_zero(cui, struct add_url_screen);
 222
 223         screen->cui = cui;
 224         screen->on_exit = on_exit;
 225         screen->label_x = 2;
 226         screen->field_x = 22;
 227
 228         nc_scr_init(&screen->scr, pb_add_url_screen_sig, 0,
 229                 cui, add_url_screen_process_key,
 230                 add_url_screen_post, add_url_screen_unpost,
 231                 NULL);
 232
 233         screen->scr.frame.ltitle = talloc_strdup(screen,
 234                         _("Petitboot Config Retrieval"));
 235         screen->scr.frame.rtitle = NULL;
 236         screen->scr.frame.help = talloc_strdup(screen,
 237                         _("tab=next, shift+tab=previous, x=exit, h=help"));
 238         nc_scr_frame_draw(&screen->scr);
 239
 240         screen->widgetset = widgetset_create(screen, screen->scr.main_ncw,
 241                         NULL);
 242
 243         add_url_screen_setup_widgets(screen);
 244         add_url_screen_layout_widgets(screen);
 245
 246         return screen;
 247 }
 248