kernel/tools/perf/ui/tui/util.c

   1 #include "../../util/util.h"
   2 #include <signal.h>
   3 #include <stdbool.h>
   4 #include <string.h>
   5 #include <sys/ttydefaults.h>
   6
   7 #include "../../util/cache.h"
   8 #include "../../util/debug.h"
   9 #include "../browser.h"
  10 #include "../keysyms.h"
  11 #include "../helpline.h"
  12 #include "../ui.h"
  13 #include "../util.h"
  14 #include "../libslang.h"
  15
  16 static void ui_browser__argv_write(struct ui_browser *browser,
  17                                    void *entry, int row)
  18 {
  19         char **arg = entry;
  20         bool current_entry = ui_browser__is_current_entry(browser, row);
  21
  22         ui_browser__set_color(browser, current_entry ? HE_COLORSET_SELECTED :
  23                                                        HE_COLORSET_NORMAL);
  24         slsmg_write_nstring(*arg, browser->width);
  25 }
  26
  27 static int popup_menu__run(struct ui_browser *menu)
  28 {
  29         int key;
  30
  31         if (ui_browser__show(menu, " ", "ESC: exit, ENTER|->: Select option") < 0)
  32                 return -1;
  33
  34         while (1) {
  35                 key = ui_browser__run(menu, 0);
  36
  37                 switch (key) {
  38                 case K_RIGHT:
  39                 case K_ENTER:
  40                         key = menu->index;
  41                         break;
  42                 case K_LEFT:
  43                 case K_ESC:
  44                 case 'q':
  45                 case CTRL('c'):
  46                         key = -1;
  47                         break;
  48                 default:
  49                         continue;
  50                 }
  51
  52                 break;
  53         }
  54
  55         ui_browser__hide(menu);
  56         return key;
  57 }
  58
  59 int ui__popup_menu(int argc, char * const argv[])
  60 {
  61         struct ui_browser menu = {
  62                 .entries    = (void *)argv,
  63                 .refresh    = ui_browser__argv_refresh,
  64                 .seek       = ui_browser__argv_seek,
  65                 .write      = ui_browser__argv_write,
  66                 .nr_entries = argc,
  67         };
  68
  69         return popup_menu__run(&menu);
  70 }
  71
  72 int ui_browser__input_window(const char *title, const char *text, char *input,
  73                              const char *exit_msg, int delay_secs)
  74 {
  75         int x, y, len, key;
  76         int max_len = 60, nr_lines = 0;
  77         static char buf[50];
  78         const char *t;
  79
  80         t = text;
  81         while (1) {
  82                 const char *sep = strchr(t, '\n');
  83
  84                 if (sep == NULL)
  85                         sep = strchr(t, '\0');
  86                 len = sep - t;
  87                 if (max_len < len)
  88                         max_len = len;
  89                 ++nr_lines;
  90                 if (*sep == '\0')
  91                         break;
  92                 t = sep + 1;
  93         }
  94
  95         pthread_mutex_lock(&ui__lock);
  96
  97         max_len += 2;
  98         nr_lines += 8;
  99         y = SLtt_Screen_Rows / 2 - nr_lines / 2;
 100         x = SLtt_Screen_Cols / 2 - max_len / 2;
 101
 102         SLsmg_set_color(0);
 103         SLsmg_draw_box(y, x++, nr_lines, max_len);
 104         if (title) {
 105                 SLsmg_gotorc(y, x + 1);
 106                 SLsmg_write_string((char *)title);
 107         }
 108         SLsmg_gotorc(++y, x);
 109         nr_lines -= 7;
 110         max_len -= 2;
 111         SLsmg_write_wrapped_string((unsigned char *)text, y, x,
 112                                    nr_lines, max_len, 1);
 113         y += nr_lines;
 114         len = 5;
 115         while (len--) {
 116                 SLsmg_gotorc(y + len - 1, x);
 117                 SLsmg_write_nstring((char *)" ", max_len);
 118         }
 119         SLsmg_draw_box(y++, x + 1, 3, max_len - 2);
 120
 121         SLsmg_gotorc(y + 3, x);
 122         SLsmg_write_nstring((char *)exit_msg, max_len);
 123         SLsmg_refresh();
 124
 125         pthread_mutex_unlock(&ui__lock);
 126
 127         x += 2;
 128         len = 0;
 129         key = ui__getch(delay_secs);
 130         while (key != K_TIMER && key != K_ENTER && key != K_ESC) {
 131                 pthread_mutex_lock(&ui__lock);
 132
 133                 if (key == K_BKSPC) {
 134                         if (len == 0) {
 135                                 pthread_mutex_unlock(&ui__lock);
 136                                 goto next_key;
 137                         }
 138                         SLsmg_gotorc(y, x + --len);
 139                         SLsmg_write_char(' ');
 140                 } else {
 141                         buf[len] = key;
 142                         SLsmg_gotorc(y, x + len++);
 143                         SLsmg_write_char(key);
 144                 }
 145                 SLsmg_refresh();
 146
 147                 pthread_mutex_unlock(&ui__lock);
 148
 149                 /* XXX more graceful overflow handling needed */
 150                 if (len == sizeof(buf) - 1) {
 151                         ui_helpline__push("maximum size of symbol name reached!");
 152                         key = K_ENTER;
 153                         break;
 154                 }
 155 next_key:
 156                 key = ui__getch(delay_secs);
 157         }
 158
 159         buf[len] = '\0';
 160         strncpy(input, buf, len+1);
 161         return key;
 162 }
 163
 164 int ui__question_window(const char *title, const char *text,
 165                         const char *exit_msg, int delay_secs)
 166 {
 167         int x, y;
 168         int max_len = 0, nr_lines = 0;
 169         const char *t;
 170
 171         t = text;
 172         while (1) {
 173                 const char *sep = strchr(t, '\n');
 174                 int len;
 175
 176                 if (sep == NULL)
 177                         sep = strchr(t, '\0');
 178                 len = sep - t;
 179                 if (max_len < len)
 180                         max_len = len;
 181                 ++nr_lines;
 182                 if (*sep == '\0')
 183                         break;
 184                 t = sep + 1;
 185         }
 186
 187         pthread_mutex_lock(&ui__lock);
 188
 189         max_len += 2;
 190         nr_lines += 4;
 191         y = SLtt_Screen_Rows / 2 - nr_lines / 2,
 192         x = SLtt_Screen_Cols / 2 - max_len / 2;
 193
 194         SLsmg_set_color(0);
 195         SLsmg_draw_box(y, x++, nr_lines, max_len);
 196         if (title) {
 197                 SLsmg_gotorc(y, x + 1);
 198                 SLsmg_write_string((char *)title);
 199         }
 200         SLsmg_gotorc(++y, x);
 201         nr_lines -= 2;
 202         max_len -= 2;
 203         SLsmg_write_wrapped_string((unsigned char *)text, y, x,
 204                                    nr_lines, max_len, 1);
 205         SLsmg_gotorc(y + nr_lines - 2, x);
 206         SLsmg_write_nstring((char *)" ", max_len);
 207         SLsmg_gotorc(y + nr_lines - 1, x);
 208         SLsmg_write_nstring((char *)exit_msg, max_len);
 209         SLsmg_refresh();
 210
 211         pthread_mutex_unlock(&ui__lock);
 212
 213         return ui__getch(delay_secs);
 214 }
 215
 216 int ui__help_window(const char *text)
 217 {
 218         return ui__question_window("Help", text, "Press any key...", 0);
 219 }
 220
 221 int ui__dialog_yesno(const char *msg)
 222 {
 223         return ui__question_window(NULL, msg, "Enter: Yes, ESC: No", 0);
 224 }
 225
 226 static int __ui__warning(const char *title, const char *format, va_list args)
 227 {
 228         char *s;
 229
 230         if (vasprintf(&s, format, args) > 0) {
 231                 int key;
 232
 233                 key = ui__question_window(title, s, "Press any key...", 0);
 234                 free(s);
 235                 return key;
 236         }
 237
 238         fprintf(stderr, "%s\n", title);
 239         vfprintf(stderr, format, args);
 240         return K_ESC;
 241 }
 242
 243 static int perf_tui__error(const char *format, va_list args)
 244 {
 245         return __ui__warning("Error:", format, args);
 246 }
 247
 248 static int perf_tui__warning(const char *format, va_list args)
 249 {
 250         return __ui__warning("Warning:", format, args);
 251 }
 252
 253 struct perf_error_ops perf_tui_eops = {
 254         .error          = perf_tui__error,
 255         .warning        = perf_tui__warning,
 256 };