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- /*
- Widgets for the Midnight Commander
- Copyright (C) 1994-2021
- Free Software Foundation, Inc.
- Authors:
- Radek Doulik, 1994, 1995
- Miguel de Icaza, 1994, 1995
- Jakub Jelinek, 1995
- Andrej Borsenkow, 1996
- Norbert Warmuth, 1997
- Andrew Borodin <aborodin@vmail.ru>, 2009, 2010, 2013, 2016
- 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 button.c
- * \brief Source: WButton widget
- */
- #include <config.h>
- #include <stdlib.h>
- #include "lib/global.h"
- #include "lib/tty/tty.h"
- #include "lib/strutil.h"
- #include "lib/widget.h"
- /*** global variables ****************************************************************************/
- /*** file scope macro definitions ****************************************************************/
- /*** file scope type declarations ****************************************************************/
- /*** file scope variables ************************************************************************/
- /* --------------------------------------------------------------------------------------------- */
- /*** file scope functions ************************************************************************/
- /* --------------------------------------------------------------------------------------------- */
- /* --------------------------------------------------------------------------------------------- */
- /*** public functions ****************************************************************************/
- /* --------------------------------------------------------------------------------------------- */
- cb_ret_t
- button_default_callback (Widget * w, Widget * sender, widget_msg_t msg, int parm, void *data)
- {
- WButton *b = BUTTON (w);
- WGroup *g = w->owner;
- WDialog *h = DIALOG (g);
- int off = 0;
- switch (msg)
- {
- case MSG_HOTKEY:
- /*
- * Don't let the default button steal Enter from the current
- * button. This is a workaround for the flawed event model
- * when hotkeys are sent to all widgets before the key is
- * handled by the current widget.
- */
- if (parm == '\n' && WIDGET (g->current->data) == w)
- {
- send_message (w, sender, MSG_KEY, ' ', data);
- return MSG_HANDLED;
- }
- if (parm == '\n' && b->flags == DEFPUSH_BUTTON)
- {
- send_message (w, sender, MSG_KEY, ' ', data);
- return MSG_HANDLED;
- }
- if (b->text.hotkey != NULL && g_ascii_tolower ((gchar) b->text.hotkey[0]) == parm)
- {
- send_message (w, sender, MSG_KEY, ' ', data);
- return MSG_HANDLED;
- }
- return MSG_NOT_HANDLED;
- case MSG_KEY:
- if (parm != ' ' && parm != '\n')
- return MSG_NOT_HANDLED;
- h->ret_value = b->action;
- if (b->callback == NULL || b->callback (b, b->action) != 0)
- dlg_stop (h);
- return MSG_HANDLED;
- case MSG_CURSOR:
- switch (b->flags)
- {
- case DEFPUSH_BUTTON:
- off = 3;
- break;
- case NORMAL_BUTTON:
- off = 2;
- break;
- case NARROW_BUTTON:
- off = 1;
- break;
- case HIDDEN_BUTTON:
- default:
- off = 0;
- break;
- }
- widget_gotoyx (w, 0, b->hotpos + off);
- return MSG_HANDLED;
- case MSG_DRAW:
- {
- gboolean focused;
- focused = widget_get_state (w, WST_FOCUSED);
- widget_selectcolor (w, focused, FALSE);
- widget_gotoyx (w, 0, 0);
- switch (b->flags)
- {
- case DEFPUSH_BUTTON:
- tty_print_string ("[< ");
- break;
- case NORMAL_BUTTON:
- tty_print_string ("[ ");
- break;
- case NARROW_BUTTON:
- tty_print_string ("[");
- break;
- case HIDDEN_BUTTON:
- default:
- return MSG_HANDLED;
- }
- hotkey_draw (w, b->text, focused);
- switch (b->flags)
- {
- case DEFPUSH_BUTTON:
- tty_print_string (" >]");
- break;
- case NORMAL_BUTTON:
- tty_print_string (" ]");
- break;
- case NARROW_BUTTON:
- tty_print_string ("]");
- break;
- default:
- break;
- }
- return MSG_HANDLED;
- }
- case MSG_DESTROY:
- hotkey_free (b->text);
- return MSG_HANDLED;
- default:
- return widget_default_callback (w, sender, msg, parm, data);
- }
- }
- /* --------------------------------------------------------------------------------------------- */
- void
- button_mouse_default_callback (Widget * w, mouse_msg_t msg, mouse_event_t * event)
- {
- (void) event;
- switch (msg)
- {
- case MSG_MOUSE_DOWN:
- widget_select (w);
- break;
- case MSG_MOUSE_CLICK:
- send_message (w, NULL, MSG_KEY, ' ', NULL);
- send_message (w->owner, w, MSG_POST_KEY, ' ', NULL);
- break;
- default:
- break;
- }
- }
- /* --------------------------------------------------------------------------------------------- */
- WButton *
- button_new (int y, int x, int action, button_flags_t flags, const char *text, bcback_fn callback)
- {
- WButton *b;
- Widget *w;
- b = g_new (WButton, 1);
- w = WIDGET (b);
- b->action = action;
- b->flags = flags;
- b->text = hotkey_new (text);
- widget_init (w, y, x, 1, button_get_len (b), button_default_callback,
- button_mouse_default_callback);
- w->options |= WOP_SELECTABLE | WOP_WANT_CURSOR | WOP_WANT_HOTKEY;
- b->callback = callback;
- b->hotpos = (b->text.hotkey != NULL) ? str_term_width1 (b->text.start) : -1;
- return b;
- }
- /* --------------------------------------------------------------------------------------------- */
- char *
- button_get_text (const WButton * b)
- {
- return hotkey_get_text (b->text);
- }
- /* --------------------------------------------------------------------------------------------- */
- void
- button_set_text (WButton * b, const char *text)
- {
- Widget *w = WIDGET (b);
- hotkey_t hk;
- hk = hotkey_new (text);
- if (hotkey_equal (b->text, hk))
- {
- hotkey_free (hk);
- return;
- }
- hotkey_free (b->text);
- b->text = hk;
- b->hotpos = (b->text.hotkey != NULL) ? str_term_width1 (b->text.start) : -1;
- w->cols = button_get_len (b);
- widget_draw (w);
- }
- /* --------------------------------------------------------------------------------------------- */
- int
- button_get_len (const WButton * b)
- {
- int ret = hotkey_width (b->text);
- switch (b->flags)
- {
- case DEFPUSH_BUTTON:
- ret += 6;
- break;
- case NORMAL_BUTTON:
- ret += 4;
- break;
- case NARROW_BUTTON:
- ret += 2;
- break;
- case HIDDEN_BUTTON:
- default:
- return 0;
- }
- return ret;
- }
- /* --------------------------------------------------------------------------------------------- */
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