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Diffstat (limited to 'src/learn.c')
| -rw-r--r-- | src/learn.c | 421 |
1 files changed, 421 insertions, 0 deletions
diff --git a/src/learn.c b/src/learn.c new file mode 100644 index 0000000..91cd338 --- /dev/null +++ b/src/learn.c @@ -0,0 +1,421 @@ +/* + Learn keys + + Copyright (C) 1995-2022 + Free Software Foundation, Inc. + + Written by: + Jakub Jelinek, 1995 + Andrew Borodin <aborodin@vmail.ru>, 2012, 2013 + + This file is part of the Midnight Commander. + + The Midnight Commander 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. + + The Midnight Commander 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 this program. If not, see <http://www.gnu.org/licenses/>. + */ + +/** \file learn.c + * \brief Source: learn keys module + */ + +#include <config.h> + +#include <stdlib.h> + +#include "lib/global.h" + +#include "lib/tty/tty.h" +#include "lib/tty/key.h" +#include "lib/mcconfig.h" +#include "lib/strescape.h" +#include "lib/strutil.h" +#include "lib/util.h" /* convert_controls() */ +#include "lib/widget.h" + +#include "setup.h" +#include "learn.h" + +/*** global variables ****************************************************************************/ + +/*** file scope macro definitions ****************************************************************/ + +#define UX 4 +#define UY 2 + +#define ROWS 13 +#define COLSHIFT 23 + +/*** file scope type declarations ****************************************************************/ + +typedef struct +{ + Widget *button; + Widget *label; + gboolean ok; + char *sequence; +} learnkey_t; + +/*** file scope variables ************************************************************************/ + +static WDialog *learn_dlg; +static const char *learn_title = N_("Learn keys"); + +static learnkey_t *learnkeys = NULL; +static int learn_total; +static int learnok; +static gboolean learnchanged = FALSE; + +/*** file scope functions ************************************************************************/ +/* --------------------------------------------------------------------------------------------- */ + +static int +learn_button (WButton * button, int action) +{ + WDialog *d; + char *seq; + + (void) button; + + d = create_message (D_ERROR, _("Teach me a key"), + _("Please press the %s\n" + "and then wait until this message disappears.\n\n" + "Then, press it again to see if OK appears\n" + "next to its button.\n\n" + "If you want to escape, press a single Escape key\n" + "and wait as well."), _(key_name_conv_tab[action - B_USER].longname)); + mc_refresh (); + if (learnkeys[action - B_USER].sequence != NULL) + MC_PTR_FREE (learnkeys[action - B_USER].sequence); + + seq = learn_key (); + if (seq != NULL) + { + /* Esc hides the dialog and do not allow definitions of + * regular characters + */ + gboolean seq_ok = FALSE; + + if (strcmp (seq, "\\e") != 0 && strcmp (seq, "\\e\\e") != 0 + && strcmp (seq, "^m") != 0 && strcmp (seq, "^i") != 0 + && (seq[1] != '\0' || *seq < ' ' || *seq > '~')) + { + learnchanged = TRUE; + learnkeys[action - B_USER].sequence = seq; + seq = convert_controls (seq); + seq_ok = define_sequence (key_name_conv_tab[action - B_USER].code, seq, MCKEY_NOACTION); + } + + if (!seq_ok) + message (D_NORMAL, _("Cannot accept this key"), _("You have entered \"%s\""), seq); + + g_free (seq); + } + + dlg_run_done (d); + widget_destroy (WIDGET (d)); + + widget_select (learnkeys[action - B_USER].button); + + return 0; /* Do not kill learn_dlg */ +} + +/* --------------------------------------------------------------------------------------------- */ + +static gboolean +learn_move (gboolean right) +{ + int i, totalcols; + + totalcols = (learn_total - 1) / ROWS + 1; + for (i = 0; i < learn_total; i++) + if (learnkeys[i].button == WIDGET (GROUP (learn_dlg)->current->data)) + { + if (right) + { + if (i < learn_total - ROWS) + i += ROWS; + else + i %= ROWS; + } + else + { + if (i / ROWS != 0) + i -= ROWS; + else if (i + (totalcols - 1) * ROWS >= learn_total) + i += (totalcols - 2) * ROWS; + else + i += (totalcols - 1) * ROWS; + } + widget_select (learnkeys[i].button); + return TRUE; + } + + return FALSE; +} + +/* --------------------------------------------------------------------------------------------- */ + +static gboolean +learn_check_key (int c) +{ + int i; + + for (i = 0; i < learn_total; i++) + { + if (key_name_conv_tab[i].code != c || learnkeys[i].ok) + continue; + + widget_select (learnkeys[i].button); + /* TRANSLATORS: This label appears near learned keys. Keep it short. */ + label_set_text (LABEL (learnkeys[i].label), _("OK")); + learnkeys[i].ok = TRUE; + learnok++; + if (learnok >= learn_total) + { + learn_dlg->ret_value = B_CANCEL; + if (learnchanged) + { + if (query_dialog (learn_title, + _ + ("It seems that all your keys already\n" + "work fine. That's great."), D_ERROR, 2, + _("&Save"), _("&Discard")) == 0) + learn_dlg->ret_value = B_ENTER; + } + else + { + message (D_ERROR, learn_title, "%s", + _ + ("Great! You have a complete terminal database!\n" + "All your keys work well.")); + } + dlg_stop (learn_dlg); + } + return TRUE; + } + + switch (c) + { + case KEY_LEFT: + case 'h': + return learn_move (FALSE); + case KEY_RIGHT: + case 'l': + return learn_move (TRUE); + case 'j': + group_select_next_widget (GROUP (learn_dlg)); + return TRUE; + case 'k': + group_select_prev_widget (GROUP (learn_dlg)); + return TRUE; + default: + break; + } + + /* Prevent from disappearing if a non-defined sequence is pressed + and contains a button hotkey. Only recognize hotkeys with ALT. */ + return (c < 255 && g_ascii_isalnum (c)); +} + +/* --------------------------------------------------------------------------------------------- */ + +static cb_ret_t +learn_callback (Widget * w, Widget * sender, widget_msg_t msg, int parm, void *data) +{ + switch (msg) + { + case MSG_KEY: + return learn_check_key (parm) ? MSG_HANDLED : MSG_NOT_HANDLED; + + default: + return dlg_default_callback (w, sender, msg, parm, data); + } +} + +/* --------------------------------------------------------------------------------------------- */ + +static void +init_learn (void) +{ + WGroup *g; + + const int dlg_width = 78; + const int dlg_height = 23; + + /* buttons */ + int bx0, bx1; + const char *b0 = N_("&Save"); + const char *b1 = N_("&Cancel"); + int bl0, bl1; + + int x, y, i; + const key_code_name_t *key; + +#ifdef ENABLE_NLS + static gboolean i18n_flag = FALSE; + if (!i18n_flag) + { + learn_title = _(learn_title); + i18n_flag = TRUE; + } + + b0 = _(b0); + b1 = _(b1); +#endif /* ENABLE_NLS */ + + do_refresh (); + + learn_dlg = + dlg_create (TRUE, 0, 0, dlg_height, dlg_width, WPOS_CENTER, FALSE, dialog_colors, + learn_callback, NULL, "[Learn keys]", learn_title); + g = GROUP (learn_dlg); + + /* find first unshown button */ + for (key = key_name_conv_tab, learn_total = 0; + key->name != NULL && strcmp (key->name, "kpleft") != 0; key++, learn_total++) + ; + + learnok = 0; + learnchanged = FALSE; + + learnkeys = g_new (learnkey_t, learn_total); + + x = UX; + y = UY; + + /* add buttons and "OK" labels */ + for (i = 0; i < learn_total; i++) + { + char buffer[BUF_TINY]; + const char *label; + int padding; + + learnkeys[i].ok = FALSE; + learnkeys[i].sequence = NULL; + + label = _(key_name_conv_tab[i].longname); + padding = 16 - str_term_width1 (label); + padding = MAX (0, padding); + g_snprintf (buffer, sizeof (buffer), "%s%*s", label, padding, ""); + + learnkeys[i].button = + WIDGET (button_new (y, x, B_USER + i, NARROW_BUTTON, buffer, learn_button)); + learnkeys[i].label = WIDGET (label_new (y, x + 19, "")); + group_add_widget (g, learnkeys[i].button); + group_add_widget (g, learnkeys[i].label); + + y++; + if (y == UY + ROWS) + { + x += COLSHIFT; + y = UY; + } + } + + group_add_widget (g, hline_new (dlg_height - 8, -1, -1)); + group_add_widget (g, label_new (dlg_height - 7, 5, + _ + ("Press all the keys mentioned here. After you have done it, check\n" + "which keys are not marked with OK. Press space on the missing\n" + "key, or click with the mouse to define it. Move around with Tab."))); + group_add_widget (g, hline_new (dlg_height - 4, -1, -1)); + /* buttons */ + bl0 = str_term_width1 (b0) + 5; /* default button */ + bl1 = str_term_width1 (b1) + 3; /* normal button */ + bx0 = (dlg_width - (bl0 + bl1 + 1)) / 2; + bx1 = bx0 + bl0 + 1; + group_add_widget (g, button_new (dlg_height - 3, bx0, B_ENTER, DEFPUSH_BUTTON, b0, NULL)); + group_add_widget (g, button_new (dlg_height - 3, bx1, B_CANCEL, NORMAL_BUTTON, b1, NULL)); +} + +/* --------------------------------------------------------------------------------------------- */ + +static void +learn_done (void) +{ + widget_destroy (WIDGET (learn_dlg)); + repaint_screen (); +} + +/* --------------------------------------------------------------------------------------------- */ + +static void +learn_save (void) +{ + int i; + char *section; + gboolean profile_changed = FALSE; + + section = g_strconcat ("terminal:", getenv ("TERM"), (char *) NULL); + + for (i = 0; i < learn_total; i++) + if (learnkeys[i].sequence != NULL) + { + char *esc_str; + + esc_str = strutils_escape (learnkeys[i].sequence, -1, ";\\", TRUE); + mc_config_set_string_raw_value (mc_global.main_config, section, + key_name_conv_tab[i].name, esc_str); + g_free (esc_str); + + profile_changed = TRUE; + } + + /* On the one hand no good idea to save the complete setup but + * without 'Auto save setup' the new key-definitions will not be + * saved unless the user does an 'Options/Save Setup'. + * On the other hand a save-button that does not save anything to + * disk is much worse. + */ + if (profile_changed) + mc_config_save_file (mc_global.main_config, NULL); + + g_free (section); +} + +/* --------------------------------------------------------------------------------------------- */ +/*** public functions ****************************************************************************/ +/* --------------------------------------------------------------------------------------------- */ + +void +learn_keys (void) +{ + gboolean save_old_esc_mode = old_esc_mode; + gboolean save_alternate_plus_minus = mc_global.tty.alternate_plus_minus; + int result; + + /* old_esc_mode cannot work in learn keys dialog */ + old_esc_mode = 0; + + /* don't translate KP_ADD, KP_SUBTRACT and + KP_MULTIPLY to '+', '-' and '*' in + correct_key_code */ + mc_global.tty.alternate_plus_minus = TRUE; + application_keypad_mode (); + + init_learn (); + result = dlg_run (learn_dlg); + + old_esc_mode = save_old_esc_mode; + mc_global.tty.alternate_plus_minus = save_alternate_plus_minus; + + if (!mc_global.tty.alternate_plus_minus) + numeric_keypad_mode (); + + if (result == B_ENTER) + learn_save (); + + learn_done (); +} + +/* --------------------------------------------------------------------------------------------- */ |