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	slsmg_write_nstring(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_session_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}
129