1 // SPDX-License-Identifier: GPL-2.0
2 #include "ui/browser.h"
3 #include "ui/keysyms.h"
4 #include "ui/ui.h"
5 #include "ui/util.h"
6 #include "ui/libslang.h"
7 #include "util/header.h"
8 #include "util/session.h"
9 
10 #include <sys/ttydefaults.h>
11 
ui_browser__argv_write(struct ui_browser * browser,void * entry,int row)12 static void ui_browser__argv_write(struct ui_browser *browser,
13 				   void *entry, int row)
14 {
15 	char **arg = entry;
16 	char *str = *arg;
17 	char empty[] = " ";
18 	bool current_entry = ui_browser__is_current_entry(browser, row);
19 	unsigned long offset = (unsigned long)browser->priv;
20 
21 	if (offset >= strlen(str))
22 		str = empty;
23 	else
24 		str = str + offset;
25 
26 	ui_browser__set_color(browser, current_entry ? HE_COLORSET_SELECTED :
27 						       HE_COLORSET_NORMAL);
28 
29 	ui_browser__write_nstring(browser, str, browser->width);
30 }
31 
list_menu__run(struct ui_browser * menu)32 static int list_menu__run(struct ui_browser *menu)
33 {
34 	int key;
35 	unsigned long offset;
36 	static const char help[] =
37 	"h/?/F1        Show this window\n"
38 	"UP/DOWN/PGUP\n"
39 	"PGDN/SPACE\n"
40 	"LEFT/RIGHT    Navigate\n"
41 	"q/ESC/CTRL+C  Exit browser";
42 
43 	if (ui_browser__show(menu, "Header information", "Press 'q' to exit") < 0)
44 		return -1;
45 
46 	while (1) {
47 		key = ui_browser__run(menu, 0);
48 
49 		switch (key) {
50 		case K_RIGHT:
51 			offset = (unsigned long)menu->priv;
52 			offset += 10;
53 			menu->priv = (void *)offset;
54 			continue;
55 		case K_LEFT:
56 			offset = (unsigned long)menu->priv;
57 			if (offset >= 10)
58 				offset -= 10;
59 			menu->priv = (void *)offset;
60 			continue;
61 		case K_F1:
62 		case 'h':
63 		case '?':
64 			ui_browser__help_window(menu, help);
65 			continue;
66 		case K_ESC:
67 		case 'q':
68 		case CTRL('c'):
69 			key = -1;
70 			break;
71 		default:
72 			continue;
73 		}
74 
75 		break;
76 	}
77 
78 	ui_browser__hide(menu);
79 	return key;
80 }
81 
ui__list_menu(int argc,char * const argv[])82 static int ui__list_menu(int argc, char * const argv[])
83 {
84 	struct ui_browser menu = {
85 		.entries    = (void *)argv,
86 		.refresh    = ui_browser__argv_refresh,
87 		.seek	    = ui_browser__argv_seek,
88 		.write	    = ui_browser__argv_write,
89 		.nr_entries = argc,
90 	};
91 
92 	return list_menu__run(&menu);
93 }
94 
tui__header_window(struct perf_env * env)95 int tui__header_window(struct perf_env *env)
96 {
97 	int i, argc = 0;
98 	char **argv;
99 	struct perf_session *session;
100 	char *ptr, *pos;
101 	size_t size;
102 	FILE *fp = open_memstream(&ptr, &size);
103 
104 	session = container_of(env, struct perf_session, header.env);
105 	perf_header__fprintf_info(session, fp, true);
106 	fclose(fp);
107 
108 	for (pos = ptr, argc = 0; (pos = strchr(pos, '\n')) != NULL; pos++)
109 		argc++;
110 
111 	argv = calloc(argc + 1, sizeof(*argv));
112 	if (argv == NULL)
113 		goto out;
114 
115 	argv[0] = pos = ptr;
116 	for (i = 1; (pos = strchr(pos, '\n')) != NULL; i++) {
117 		*pos++ = '\0';
118 		argv[i] = pos;
119 	}
120 
121 	BUG_ON(i != argc + 1);
122 
123 	ui__list_menu(argc, argv);
124 
125 out:
126 	free(argv);
127 	free(ptr);
128 	return 0;
129 }
130