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/*
* hyptop - Show hypervisor performance data on System z
*
* Window "help": Show online help text.
*
* Copyright IBM Corp. 2010, 2017
*
* s390-tools is free software; you can redistribute it and/or modify
* it under the terms of the MIT license. See LICENSE for details.
*/
#include "helper.h"
#include "hyptop.h"
#include "sd.h"
#include "table.h"
#include "win_help.h"
/*
* Print help text to screen
*/
static void l_update_term(struct hyptop_win *win)
{
struct win_help *win_help = (struct win_help *) win;
tbox_print(win_help->tb);
}
/*
* Process input and switch window if necessary
*/
static enum hyptop_win_action l_process_input(struct hyptop_win *win, int c)
{
struct win_help *win_help = (struct win_help *) win;
switch (c) {
case 'h':
case KEY_RETURN:
case KEY_ENTER:
case KEY_LEFT:
case '?':
case 'q':
return win_back();
case 'G':
tbox_scroll_down(win_help->tb, TBOX_SCROLL_LAST);
break;
case 'g':
tbox_scroll_up(win_help->tb, TBOX_SCROLL_LAST);
break;
case KEY_NPAGE:
tbox_scroll_down(win_help->tb, TBOX_SCROLL_PAGE);
break;
case KEY_PPAGE:
tbox_scroll_up(win_help->tb, TBOX_SCROLL_PAGE);
break;
case 'k':
case KEY_UP:
tbox_scroll_up(win_help->tb, TBOX_SCROLL_LINE);
break;
case 'j':
case KEY_DOWN:
tbox_scroll_down(win_help->tb, TBOX_SCROLL_LINE);
break;
case ERR:
return WIN_KEEP;
default:
break;
}
hyptop_update_term();
return WIN_KEEP;
}
/*
* Event loop: wait for input and print help text
*/
static void l_run(struct hyptop_win *win)
{
(void) win;
while (1) {
hyptop_update_term();
if (hyptop_process_input() == WIN_SWITCH)
return;
}
}
/*
* Add text to text box
*/
static void l_add_text(struct tbox *tb, const char *str)
{
char *line, *line_end, *str_cpy;
str_cpy = line_end = ht_strdup(str);
for (line = str_cpy; line_end != NULL; line = line_end + 1) {
line_end = strchr(line, '\n');
if (line_end)
*line_end = 0;
tbox_line_add(tb, line);
}
ht_free(str_cpy);
}
/*
* Create new help window for "win" and init window description
*/
struct hyptop_win *win_help_new(struct hyptop_win *win)
{
struct win_help *win_help;
win_help = ht_zalloc(sizeof(*win_help));
win_help->tb = tbox_new();
tbox_printf(win_help->tb, "\\BWindow: %s\\B", win->id);
tbox_printf(win_help->tb, " ");
l_add_text(win_help->tb, win->desc);
nav_desc_add(win_help->tb, win->desc_normal_vec, win->desc_select_vec,
win->desc_general_vec);
tbox_finish(win_help->tb);
win_help->win.process_input = l_process_input;
win_help->win.update_term = l_update_term;
win_help->win.run = l_run;
return (struct hyptop_win *) win_help;
}
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