Commit aa49f6ec authored by Namhyung Kim's avatar Namhyung Kim Committed by Arnaldo Carvalho de Melo
Browse files

perf ui browser: Introduce ui_browser__input_window 

The ui_browser__input_window() function is to get user's key input.
Current implementation can handle maximum 49 characters.

Cc: Ingo Molnar <mingo@elte.hu>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1331887855-874-2-git-send-email-namhyung.kim@lge.com


Signed-off-by: default avatarNamhyung Kim <namhyung.kim@lge.com>
Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent e94d53eb

tools/perf/util/ui/browser.h

+2 −0
Original line number Diff line number Diff line
@@ -49,6 +49,8 @@ int ui_browser__warning(struct ui_browser *browser, int timeout, 
			const char *format, ...);

int ui_browser__help_window(struct ui_browser *browser, const char *text);

bool ui_browser__dialog_yesno(struct ui_browser *browser, const char *text);

int ui_browser__input_window(const char *title, const char *text, char *input,

			     const char *exit_msg, int delay_sec);



void ui_browser__argv_seek(struct ui_browser *browser, off_t offset, int whence);

unsigned int ui_browser__argv_refresh(struct ui_browser *browser);

tools/perf/util/ui/keysyms.h

+2 −0
Original line number Diff line number Diff line
@@ -16,6 +16,8 @@ 
#define K_TAB	'\t'

#define K_UNTAB	SL_KEY_UNTAB

#define K_UP	SL_KEY_UP

#define K_BKSPC 0x7f

#define K_DEL	SL_KEY_DELETE



/* Not really keys */

#define K_TIMER	 -1

tools/perf/util/ui/util.c

+78 −0
Original line number Diff line number Diff line
@@ -69,6 +69,84 @@ int ui__popup_menu(int argc, char * const argv[]) 
	return popup_menu__run(&menu);

}



int ui_browser__input_window(const char *title, const char *text, char *input,

			     const char *exit_msg, int delay_secs)

{

	int x, y, len, key;

	int max_len = 60, nr_lines = 0;

	static char buf[50];

	const char *t;



	t = text;

	while (1) {

		const char *sep = strchr(t, '\n');



		if (sep == NULL)

			sep = strchr(t, '\0');

		len = sep - t;

		if (max_len < len)

			max_len = len;

		++nr_lines;

		if (*sep == '\0')

			break;

		t = sep + 1;

	}



	max_len += 2;

	nr_lines += 8;

	y = SLtt_Screen_Rows / 2 - nr_lines / 2;

	x = SLtt_Screen_Cols / 2 - max_len / 2;



	SLsmg_set_color(0);

	SLsmg_draw_box(y, x++, nr_lines, max_len);

	if (title) {

		SLsmg_gotorc(y, x + 1);

		SLsmg_write_string((char *)title);

	}

	SLsmg_gotorc(++y, x);

	nr_lines -= 7;

	max_len -= 2;

	SLsmg_write_wrapped_string((unsigned char *)text, y, x,

				   nr_lines, max_len, 1);

	y += nr_lines + 1;

	SLsmg_set_color(0);

	SLsmg_draw_box(y - 1, x + 1, 3, max_len - 2);



	SLsmg_gotorc(y + 3, x);

	SLsmg_write_nstring((char *)exit_msg, max_len);

	SLsmg_refresh();



	x += 2;

	len = 0;

	key = ui__getch(delay_secs);

	while (key != K_TIMER && key != K_ENTER && key != K_ESC) {

		if (key == K_BKSPC) {

			if (len == 0)

				goto next_key;

			SLsmg_gotorc(y, x + --len);

			SLsmg_write_char(' ');

		} else {

			buf[len] = key;

			SLsmg_gotorc(y, x + len++);

			SLsmg_write_char(key);

		}

		SLsmg_refresh();



		/* XXX more graceful overflow handling needed */

		if (len == sizeof(buf) - 1) {

			ui_helpline__push("maximum size of symbol name reached!");

			key = K_ENTER;

			break;

		}

next_key:

		key = ui__getch(delay_secs);

	}



	buf[len] = '\0';

	strncpy(input, buf, len+1);

	return key;

}



int ui__question_window(const char *title, const char *text,

			const char *exit_msg, int delay_secs)

{

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