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1// SPDX-License-Identifier: GPL-2.02#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 12static 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	else24		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 32static 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 82static 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 95int 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 125out:126	free(argv);127	free(ptr);128	return 0;129}130