1#include "util/cache.h"
  2#include "util/debug.h"
  3#include "ui/browser.h"
  4#include "ui/keysyms.h"
  5#include "ui/ui.h"
  6#include "ui/util.h"
  7#include "ui/libslang.h"
  8#include "util/header.h"
  9#include "util/session.h"
 10
 11static void ui_browser__argv_write(struct ui_browser *browser,
 12				   void *entry, int row)
 13{
 14	char **arg = entry;
 15	char *str = *arg;
 16	char empty[] = " ";
 17	bool current_entry = ui_browser__is_current_entry(browser, row);
 18	unsigned long offset = (unsigned long)browser->priv;
 19
 20	if (offset >= strlen(str))
 21		str = empty;
 22	else
 23		str = str + offset;
 24
 25	ui_browser__set_color(browser, current_entry ? HE_COLORSET_SELECTED :
 26						       HE_COLORSET_NORMAL);
 27
 28	ui_browser__write_nstring(browser, str, browser->width);
 29}
 30
 31static int list_menu__run(struct ui_browser *menu)
 32{
 33	int key;
 34	unsigned long offset;
 35	const char help[] =
 36	"h/?/F1        Show this window\n"
 37	"UP/DOWN/PGUP\n"
 38	"PGDN/SPACE\n"
 39	"LEFT/RIGHT    Navigate\n"
 40	"q/ESC/CTRL+C  Exit browser";
 41
 42	if (ui_browser__show(menu, "Header information", "Press 'q' to exit") < 0)
 43		return -1;
 44
 45	while (1) {
 46		key = ui_browser__run(menu, 0);
 47
 48		switch (key) {
 49		case K_RIGHT:
 50			offset = (unsigned long)menu->priv;
 51			offset += 10;
 52			menu->priv = (void *)offset;
 53			continue;
 54		case K_LEFT:
 55			offset = (unsigned long)menu->priv;
 56			if (offset >= 10)
 57				offset -= 10;
 58			menu->priv = (void *)offset;
 59			continue;
 60		case K_F1:
 61		case 'h':
 62		case '?':
 63			ui_browser__help_window(menu, help);
 64			continue;
 65		case K_ESC:
 66		case 'q':
 67		case CTRL('c'):
 68			key = -1;
 69			break;
 70		default:
 71			continue;
 72		}
 73
 74		break;
 75	}
 76
 77	ui_browser__hide(menu);
 78	return key;
 79}
 80
 81static int ui__list_menu(int argc, char * const argv[])
 82{
 83	struct ui_browser menu = {
 84		.entries    = (void *)argv,
 85		.refresh    = ui_browser__argv_refresh,
 86		.seek	    = ui_browser__argv_seek,
 87		.write	    = ui_browser__argv_write,
 88		.nr_entries = argc,
 89	};
 90
 91	return list_menu__run(&menu);
 92}
 93
 94int tui__header_window(struct perf_env *env)
 95{
 96	int i, argc = 0;
 97	char **argv;
 98	struct perf_session *session;
 99	char *ptr, *pos;
100	size_t size;
101	FILE *fp = open_memstream(&ptr, &size);
102
103	session = container_of(env, struct perf_session, header.env);
104	perf_header__fprintf_info(session, fp, true);
105	fclose(fp);
106
107	for (pos = ptr, argc = 0; (pos = strchr(pos, '\n')) != NULL; pos++)
108		argc++;
109
110	argv = calloc(argc + 1, sizeof(*argv));
111	if (argv == NULL)
112		goto out;
113
114	argv[0] = pos = ptr;
115	for (i = 1; (pos = strchr(pos, '\n')) != NULL; i++) {
116		*pos++ = '\0';
117		argv[i] = pos;
118	}
119
120	BUG_ON(i != argc + 1);
121
122	ui__list_menu(argc, argv);
123
124out:
125	free(argv);
126	free(ptr);
127	return 0;
128}