/*
* input_win.c
*
* Copyright (C) 2012 James Booth <boothj5@gmail.com>
*
* This file is part of Profanity.
*
* Profanity is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Profanity is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Profanity. If not, see <http://www.gnu.org/licenses/>.
*
*/
/*
* Non blocking input char handling
*
* *size - holds the current size of input
* *input - holds the current input string, NOT null terminated at this point
* *ch - getch will put a charater here if there was any input
*
* The example below shows the values of size, input, a call to wgetyx to
* find the current cursor location, and the index of the input string.
*
* size : " 7 "
* input : " example "
* inp_x : "012345678"
* index : " 0123456 " (inp_x - 1)
*/
#include <string.h>
#include <stdlib.h>
#include <ncurses.h>
#include "windows.h"
#include "history.h"
static WINDOW *inp_win;
static int _handle_edit(const int ch, char *input, int *size);
static int _printable(const int ch);
static void _replace_input(char *input, const char * const new_input, int *size);
void create_input_window(void)
{
int rows, cols;
getmaxyx(stdscr, rows, cols);
inp_win = newwin(1, cols, rows-1, 0);
keypad(inp_win, TRUE);
wattrset(inp_win, A_BOLD);
wmove(inp_win, 0, 1);
wrefresh(inp_win);
}
void inp_win_resize(const char * const input, const int size)
{
int rows, cols;
getmaxyx(stdscr, rows, cols);
mvwin(inp_win, rows-1, 0);
wresize(inp_win, 1, cols);
wrefresh(inp_win);
}
void inp_clear(void)
{
wclear(inp_win);
wmove(inp_win, 0, 1);
wrefresh(inp_win);
}
void inp_non_block(void)
{
wtimeout(inp_win, 0);
}
void inp_block(void)
{
wtimeout(inp_win, -1);
}
void inp_get_char(int *ch, char *input, int *size)
{
int inp_y = 0;
int inp_x = 0;
int i;
// echo off, and get some more input
noecho();
*ch = wgetch(inp_win);
// if it wasn't an arrow key etc
if (!_handle_edit(*ch, input, size)) {
if (_printable(*ch)) {
getyx(inp_win, inp_y, inp_x);
// handle insert if not at end of input
if (inp_x <= *size) {
winsch(inp_win, *ch);
wmove(inp_win, inp_y, inp_x+1);
for (i = *size; i > inp_x -1; i--)
input[i] = input[i-1];
input[inp_x -1] = *ch;
(*size)++;
// otherwise just append
} else {
waddch(inp_win, *ch);
input[(*size)++] = *ch;
}
reset_search_attempts();
}
}
echo();
}
void inp_get_password(char *passwd)
{
wclear(inp_win);
noecho();
mvwgetnstr(inp_win, 0, 1, passwd, 20);
wmove(inp_win, 0, 1);
echo();
status_bar_clear();
}
void inp_put_back(void)
{
wrefresh(inp_win);
}
/*
* Deal with command editing, return 1 if ch was an edit
* key press: up, down, left, right or backspace
* return 0 if it wasnt
*/
static int _handle_edit(const int ch, char *input, int *size)
{
int i;
char *prev = NULL;
char *next = NULL;
char *found = NULL;
char *auto_msg = NULL;
int inp_y = 0;
int inp_x = 0;
char inp_cpy[*size];
getyx(inp_win, inp_y, inp_x);
switch(ch) {
case 127:
case KEY_BACKSPACE:
reset_search_attempts();
if (*size > 0) {
// if at end, delete last char
if (inp_x > *size) {
wmove(inp_win, inp_y, inp_x-1);
wdelch(inp_win);
(*size)--;
// if in middle, delete and shift chars left
} else if (inp_x > 1 && inp_x <= *size) {
for (i = inp_x-1; i < *size; i++)
input[i-1] = input[i];
(*size)--;
inp_clear();
for (i = 0; i < *size; i++)
waddch(inp_win, input[i]);
wmove(inp_win, 0, inp_x -1);
}
}
return 1;
case KEY_DC: // DEL
if (inp_x <= *size) {
wdelch(inp_win);
// if not last char, shift chars left
if (inp_x < *size)
for (i = inp_x-1; i < *size; i++)
input[i] = input[i+1];
(*size)--;
}
return 1;
case KEY_LEFT:
if (inp_x > 1)
wmove(inp_win, inp_y, inp_x-1);
return 1;
case KEY_RIGHT:
if (inp_x <= *size )
wmove(inp_win, inp_y, inp_x+1);
return 1;
case KEY_UP:
prev = history_previous();
if (prev)
_replace_input(input, prev, size);
return 1;
case KEY_DOWN:
next = history_next();
if (next)
_replace_input(input, next, size);
return 1;
case KEY_HOME:
wmove(inp_win, inp_y, 1);
return 1;
case KEY_END:
wmove(inp_win, inp_y, (*size) + 1);
return 1;
case 9: // tab
if ((strncmp(input, "/msg ", 5) == 0) && (*size > 5)) {
for(i = 5; i < *size; i++) {
inp_cpy[i-5] = input[i];
}
inp_cpy[(*size) - 5] = '\0';
found = find_contact(inp_cpy);
if (found != NULL) {
auto_msg = (char *) malloc((5 + (strlen(found) + 1)) * sizeof(char));
strcpy(auto_msg, "/msg ");
strcat(auto_msg, found);
_replace_input(input, auto_msg, size);
free(auto_msg);
free(found);
}
}
return 1;
default:
return 0;
}
}
static int _printable(const int ch)
{
return (ch != ERR && ch != '\n' &&
ch != KEY_PPAGE && ch != KEY_NPAGE &&
ch != KEY_F(1) && ch != KEY_F(2) && ch != KEY_F(3) &&
ch != KEY_F(4) && ch != KEY_F(5) && ch != KEY_F(6) &&
ch != KEY_F(7) && ch != KEY_F(8) && ch != KEY_F(9) &&
ch != KEY_F(10) && ch!= KEY_F(11) && ch != KEY_F(12) &&
ch != KEY_IC && ch != KEY_EIC && ch != KEY_RESIZE);
}
static void _replace_input(char *input, const char * const new_input, int *size)
{
int i;
strcpy(input, new_input);
*size = strlen(input);
inp_clear();
for (i = 0; i < *size; i++)
waddch(inp_win, input[i]);
}