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+/*
+ Widgets for the Midnight Commander
+
+ Copyright (C) 1994-2022
+ 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>, 2009-2022
+
+ 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)
+{
+ WRect r = { y, x, 1, 1 };
+ WButton *b;
+ Widget *w;
+
+ b = g_new (WButton, 1);
+ w = WIDGET (b);
+
+ b->action = action;
+ b->flags = flags;
+ b->text = hotkey_new (text);
+ r.cols = button_get_len (b);
+ widget_init (w, &r, 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->rect.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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