mirror of
https://github.com/MidnightCommander/mc
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47590152fa
When listbox is updated, e.g. new file match add MSG_DRAW event is triggered but currently listbox re-draw has no knowledge about right focus state. Fix it by remember current focus state. Signed-off-by: Andreas Mohr <and@gmx.li> Signed-off-by: Andrew Borodin <aborodin@vmail.ru>
801 lines
20 KiB
C
801 lines
20 KiB
C
/*
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Widgets for the Midnight Commander
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Copyright (C) 1994-2016
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Free Software Foundation, Inc.
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Authors:
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Radek Doulik, 1994, 1995
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Miguel de Icaza, 1994, 1995
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Jakub Jelinek, 1995
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Andrej Borsenkow, 1996
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Norbert Warmuth, 1997
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Andrew Borodin <aborodin@vmail.ru>, 2009, 2010, 2013
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This file is part of the Midnight Commander.
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The Midnight Commander is free software: you can redistribute it
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and/or modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation, either version 3 of the License,
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or (at your option) any later version.
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The Midnight Commander is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/** \file listbox.c
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* \brief Source: WListbox widget
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*/
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#include <config.h>
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#include <stdlib.h>
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#include "lib/global.h"
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#include "lib/tty/tty.h"
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#include "lib/tty/mouse.h"
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#include "lib/skin.h"
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#include "lib/strutil.h"
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#include "lib/util.h" /* Q_() */
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#include "lib/keybind.h" /* global_keymap_t */
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#include "lib/widget.h"
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/*** global variables ****************************************************************************/
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const global_keymap_t *listbox_map = NULL;
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/*** file scope macro definitions ****************************************************************/
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/* Gives the position of the last item. */
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#define LISTBOX_LAST(l) (g_queue_is_empty ((l)->list) ? 0 : (int) g_queue_get_length ((l)->list) - 1)
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/*** file scope type declarations ****************************************************************/
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/*** file scope variables ************************************************************************/
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/*** file scope functions ************************************************************************/
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static int
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listbox_entry_cmp (const void *a, const void *b, void *user_data)
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{
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const WLEntry *ea = (const WLEntry *) a;
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const WLEntry *eb = (const WLEntry *) b;
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(void) user_data;
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return strcmp (ea->text, eb->text);
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}
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/* --------------------------------------------------------------------------------------------- */
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static void
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listbox_entry_free (void *data)
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{
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WLEntry *e = data;
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g_free (e->text);
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if (e->free_data)
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g_free (e->data);
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g_free (e);
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}
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/* --------------------------------------------------------------------------------------------- */
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static void
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listbox_drawscroll (WListbox * l)
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{
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Widget *w = WIDGET (l);
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int max_line = w->lines - 1;
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int line = 0;
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int i;
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int length;
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/* Are we at the top? */
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widget_move (w, 0, w->cols);
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if (l->top == 0)
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tty_print_one_vline (TRUE);
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else
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tty_print_char ('^');
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length = g_queue_get_length (l->list);
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/* Are we at the bottom? */
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widget_move (w, max_line, w->cols);
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if (l->top + w->lines == length || w->lines >= length)
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tty_print_one_vline (TRUE);
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else
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tty_print_char ('v');
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/* Now draw the nice relative pointer */
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if (!g_queue_is_empty (l->list))
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line = 1 + ((l->pos * (w->lines - 2)) / length);
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for (i = 1; i < max_line; i++)
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{
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widget_move (w, i, w->cols);
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if (i != line)
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tty_print_one_vline (TRUE);
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else
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tty_print_char ('*');
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}
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}
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/* --------------------------------------------------------------------------------------------- */
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static void
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listbox_draw (WListbox * l, gboolean focused)
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{
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Widget *w = WIDGET (l);
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const WDialog *h = w->owner;
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const gboolean disabled = (w->options & W_DISABLED) != 0;
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const int normalc = disabled ? DISABLED_COLOR : h->color[DLG_COLOR_NORMAL];
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/* *INDENT-OFF* */
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int selc = disabled
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? DISABLED_COLOR
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: focused
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? h->color[DLG_COLOR_HOT_FOCUS]
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: h->color[DLG_COLOR_FOCUS];
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/* *INDENT-ON* */
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int length = 0;
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GList *le = NULL;
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int pos;
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int i;
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int sel_line = -1;
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if (l->list != NULL)
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{
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length = g_queue_get_length (l->list);
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le = g_queue_peek_nth_link (l->list, (guint) l->top);
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}
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/* pos = (le == NULL) ? 0 : g_list_position (l->list, le); */
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pos = (le == NULL) ? 0 : l->top;
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for (i = 0; i < w->lines; i++)
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{
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const char *text = "";
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/* Display the entry */
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if (pos == l->pos && sel_line == -1)
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{
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sel_line = i;
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tty_setcolor (selc);
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}
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else
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tty_setcolor (normalc);
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widget_move (l, i, 1);
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if (l->list != NULL && le != NULL && (i == 0 || pos < length))
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{
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WLEntry *e = LENTRY (le->data);
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text = e->text;
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le = g_list_next (le);
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pos++;
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}
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tty_print_string (str_fit_to_term (text, w->cols - 2, J_LEFT_FIT));
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}
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l->cursor_y = sel_line;
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if (l->scrollbar && length > w->lines)
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{
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tty_setcolor (normalc);
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listbox_drawscroll (l);
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}
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}
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/* --------------------------------------------------------------------------------------------- */
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static int
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listbox_check_hotkey (WListbox * l, int key)
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{
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if (!listbox_is_empty (l))
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{
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int i;
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GList *le;
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for (i = 0, le = g_queue_peek_head_link (l->list); le != NULL; i++, le = g_list_next (le))
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{
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WLEntry *e = LENTRY (le->data);
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if (e->hotkey == key)
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return i;
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}
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}
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return (-1);
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}
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/* --------------------------------------------------------------------------------------------- */
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/* Calculates the item displayed at screen row 'y' (y==0 being the widget's 1st row). */
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static int
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listbox_y_pos (WListbox * l, int y)
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{
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return min (l->top + y, LISTBOX_LAST (l));
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}
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/* --------------------------------------------------------------------------------------------- */
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static void
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listbox_fwd (WListbox * l, gboolean wrap)
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{
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if ((guint) l->pos + 1 < g_queue_get_length (l->list))
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listbox_select_entry (l, l->pos + 1);
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else if (wrap)
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listbox_select_first (l);
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}
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/* --------------------------------------------------------------------------------------------- */
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static void
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listbox_fwd_n (WListbox * l, int n)
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{
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listbox_select_entry (l, min (l->pos + n, LISTBOX_LAST (l)));
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}
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/* --------------------------------------------------------------------------------------------- */
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static void
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listbox_back (WListbox * l, gboolean wrap)
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{
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if (l->pos > 0)
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listbox_select_entry (l, l->pos - 1);
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else if (wrap)
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listbox_select_last (l);
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}
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/* --------------------------------------------------------------------------------------------- */
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static void
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listbox_back_n (WListbox * l, int n)
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{
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listbox_select_entry (l, max (l->pos - n, 0));
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}
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/* --------------------------------------------------------------------------------------------- */
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static cb_ret_t
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listbox_execute_cmd (WListbox * l, long command)
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{
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cb_ret_t ret = MSG_HANDLED;
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Widget *w = WIDGET (l);
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if (l->list == NULL || g_queue_is_empty (l->list))
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return MSG_NOT_HANDLED;
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switch (command)
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{
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case CK_Up:
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listbox_back (l, TRUE);
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break;
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case CK_Down:
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listbox_fwd (l, TRUE);
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break;
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case CK_Top:
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listbox_select_first (l);
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break;
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case CK_Bottom:
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listbox_select_last (l);
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break;
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case CK_PageUp:
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listbox_back_n (l, w->lines - 1);
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break;
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case CK_PageDown:
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listbox_fwd_n (l, w->lines - 1);
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break;
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case CK_Delete:
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if (l->deletable)
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{
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gboolean is_last, is_more;
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int length;
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length = g_queue_get_length (l->list);
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is_last = (l->pos + 1 >= length);
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is_more = (l->top + w->lines >= length);
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listbox_remove_current (l);
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if ((l->top > 0) && (is_last || is_more))
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l->top--;
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}
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break;
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case CK_Clear:
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if (l->deletable && mc_global.widget.confirm_history_cleanup
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/* TRANSLATORS: no need to translate 'DialogTitle', it's just a context prefix */
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&& (query_dialog (Q_ ("DialogTitle|History cleanup"),
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_("Do you want clean this history?"),
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D_ERROR, 2, _("&Yes"), _("&No")) == 0))
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listbox_remove_list (l);
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break;
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default:
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ret = MSG_NOT_HANDLED;
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}
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return ret;
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}
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/* --------------------------------------------------------------------------------------------- */
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/* Return MSG_HANDLED if we want a redraw */
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static cb_ret_t
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listbox_key (WListbox * l, int key)
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{
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long command;
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if (l->list == NULL)
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return MSG_NOT_HANDLED;
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/* focus on listbox item N by '0'..'9' keys */
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if (key >= '0' && key <= '9')
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{
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listbox_select_entry (l, key - '0');
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return MSG_HANDLED;
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}
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command = keybind_lookup_keymap_command (listbox_map, key);
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if (command == CK_IgnoreKey)
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return MSG_NOT_HANDLED;
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return listbox_execute_cmd (l, command);
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}
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/* --------------------------------------------------------------------------------------------- */
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/* Listbox item adding function */
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static inline void
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listbox_append_item (WListbox * l, WLEntry * e, listbox_append_t pos)
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{
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if (l->list == NULL)
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{
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l->list = g_queue_new ();
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pos = LISTBOX_APPEND_AT_END;
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}
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switch (pos)
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{
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case LISTBOX_APPEND_AT_END:
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g_queue_push_tail (l->list, e);
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break;
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case LISTBOX_APPEND_BEFORE:
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g_queue_insert_before (l->list, g_queue_peek_nth_link (l->list, (guint) l->pos), e);
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break;
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case LISTBOX_APPEND_AFTER:
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g_queue_insert_after (l->list, g_queue_peek_nth_link (l->list, (guint) l->pos), e);
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break;
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case LISTBOX_APPEND_SORTED:
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g_queue_insert_sorted (l->list, e, (GCompareDataFunc) listbox_entry_cmp, NULL);
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break;
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default:
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break;
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}
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}
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/* --------------------------------------------------------------------------------------------- */
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/* Call this whenever the user changes the selected item. */
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static void
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listbox_on_change (WListbox * l)
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{
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listbox_draw (l, TRUE);
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send_message (WIDGET (l)->owner, l, MSG_ACTION, l->pos, NULL);
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}
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/* --------------------------------------------------------------------------------------------- */
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static void
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listbox_run_hotkey (WListbox * l, int pos)
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{
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WDialog *h = WIDGET (l)->owner;
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int action;
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listbox_select_entry (l, pos);
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listbox_on_change (l);
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if (l->callback != NULL)
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action = l->callback (l);
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else
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action = LISTBOX_DONE;
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if (action == LISTBOX_DONE)
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{
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h->ret_value = B_ENTER;
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dlg_stop (h);
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}
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}
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/* --------------------------------------------------------------------------------------------- */
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static inline void
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listbox_destroy (WListbox * l)
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{
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listbox_remove_list (l);
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}
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/* --------------------------------------------------------------------------------------------- */
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static cb_ret_t
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listbox_callback (Widget * w, Widget * sender, widget_msg_t msg, int parm, void *data)
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{
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WListbox *l = LISTBOX (w);
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cb_ret_t ret_code;
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switch (msg)
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{
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case MSG_INIT:
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return MSG_HANDLED;
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case MSG_HOTKEY:
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{
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int pos;
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pos = listbox_check_hotkey (l, parm);
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if (pos < 0)
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return MSG_NOT_HANDLED;
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listbox_run_hotkey (l, pos);
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return MSG_HANDLED;
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}
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case MSG_KEY:
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ret_code = listbox_key (l, parm);
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if (ret_code != MSG_NOT_HANDLED)
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listbox_on_change (l);
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return ret_code;
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case MSG_ACTION:
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return listbox_execute_cmd (l, parm);
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case MSG_CURSOR:
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widget_move (l, l->cursor_y, 0);
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return MSG_HANDLED;
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case MSG_FOCUS:
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case MSG_UNFOCUS:
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l->focused = msg == MSG_FOCUS;
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/* fall through */
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case MSG_DRAW:
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listbox_draw (l, l->focused);
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return MSG_HANDLED;
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case MSG_DESTROY:
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listbox_destroy (l);
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return MSG_HANDLED;
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case MSG_RESIZE:
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return MSG_HANDLED;
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default:
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return widget_default_callback (w, sender, msg, parm, data);
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}
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}
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/* --------------------------------------------------------------------------------------------- */
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static int
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listbox_event (Gpm_Event * event, void *data)
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{
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WListbox *l = LISTBOX (data);
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Widget *w = WIDGET (data);
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if (!mouse_global_in_widget (event, w))
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return MOU_UNHANDLED;
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/* Single click */
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if ((event->type & GPM_DOWN) != 0)
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dlg_select_widget (l);
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if (listbox_is_empty (l))
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return MOU_NORMAL;
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if ((event->type & (GPM_DOWN | GPM_DRAG)) != 0)
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{
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int ret = MOU_REPEAT;
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Gpm_Event local;
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local = mouse_get_local (event, w);
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if (local.y < 1)
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listbox_back_n (l, -local.y + 1);
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else if (local.y > w->lines)
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listbox_fwd_n (l, local.y - w->lines);
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else if ((local.buttons & GPM_B_UP) != 0)
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{
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listbox_back (l, FALSE);
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ret = MOU_NORMAL;
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}
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else if ((local.buttons & GPM_B_DOWN) != 0)
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{
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listbox_fwd (l, FALSE);
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ret = MOU_NORMAL;
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}
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else
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listbox_select_entry (l, listbox_y_pos (l, local.y - 1));
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listbox_on_change (l);
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return ret;
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}
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/* Double click */
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if ((event->type & (GPM_DOUBLE | GPM_UP)) == (GPM_UP | GPM_DOUBLE))
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{
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Gpm_Event local;
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local = mouse_get_local (event, w);
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dlg_select_widget (l);
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listbox_run_hotkey (l, listbox_y_pos (l, local.y - 1));
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}
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return MOU_NORMAL;
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}
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/* --------------------------------------------------------------------------------------------- */
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/*** public functions ****************************************************************************/
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/* --------------------------------------------------------------------------------------------- */
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WListbox *
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listbox_new (int y, int x, int height, int width, gboolean deletable, lcback_fn callback)
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{
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WListbox *l;
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Widget *w;
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if (height <= 0)
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height = 1;
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l = g_new (WListbox, 1);
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w = WIDGET (l);
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widget_init (w, y, x, height, width, listbox_callback, listbox_event);
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l->list = NULL;
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l->top = l->pos = 0;
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l->deletable = deletable;
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l->callback = callback;
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l->allow_duplicates = TRUE;
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l->scrollbar = !mc_global.tty.slow_terminal;
|
|
l->focused = FALSE;
|
|
widget_want_hotkey (w, TRUE);
|
|
widget_want_cursor (w, FALSE);
|
|
|
|
return l;
|
|
}
|
|
|
|
/* --------------------------------------------------------------------------------------------- */
|
|
|
|
int
|
|
listbox_search_text (WListbox * l, const char *text)
|
|
{
|
|
if (!listbox_is_empty (l))
|
|
{
|
|
int i;
|
|
GList *le;
|
|
|
|
for (i = 0, le = g_queue_peek_head_link (l->list); le != NULL; i++, le = g_list_next (le))
|
|
{
|
|
WLEntry *e = LENTRY (le->data);
|
|
|
|
if (strcmp (e->text, text) == 0)
|
|
return i;
|
|
}
|
|
}
|
|
|
|
return (-1);
|
|
}
|
|
|
|
/* --------------------------------------------------------------------------------------------- */
|
|
|
|
/* Selects the first entry and scrolls the list to the top */
|
|
void
|
|
listbox_select_first (WListbox * l)
|
|
{
|
|
l->pos = l->top = 0;
|
|
}
|
|
|
|
/* --------------------------------------------------------------------------------------------- */
|
|
|
|
/* Selects the last entry and scrolls the list to the bottom */
|
|
void
|
|
listbox_select_last (WListbox * l)
|
|
{
|
|
int lines = WIDGET (l)->lines;
|
|
int length = 0;
|
|
|
|
if (!listbox_is_empty (l))
|
|
length = g_queue_get_length (l->list);
|
|
|
|
l->pos = length > 0 ? length - 1 : 0;
|
|
l->top = length > lines ? length - lines : 0;
|
|
}
|
|
|
|
/* --------------------------------------------------------------------------------------------- */
|
|
|
|
void
|
|
listbox_select_entry (WListbox * l, int dest)
|
|
{
|
|
GList *le;
|
|
int pos;
|
|
gboolean top_seen = FALSE;
|
|
|
|
if (listbox_is_empty (l) || dest < 0)
|
|
return;
|
|
|
|
/* Special case */
|
|
for (pos = 0, le = g_queue_peek_head_link (l->list); le != NULL; pos++, le = g_list_next (le))
|
|
{
|
|
if (pos == l->top)
|
|
top_seen = TRUE;
|
|
|
|
if (pos == dest)
|
|
{
|
|
l->pos = dest;
|
|
if (!top_seen)
|
|
l->top = l->pos;
|
|
else
|
|
{
|
|
int lines = WIDGET (l)->lines;
|
|
|
|
if (l->pos - l->top >= lines)
|
|
l->top = l->pos - lines + 1;
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
|
|
/* If we are unable to find it, set decent values */
|
|
l->pos = l->top = 0;
|
|
}
|
|
|
|
/* --------------------------------------------------------------------------------------------- */
|
|
|
|
/* Returns the current string text as well as the associated extra data */
|
|
void
|
|
listbox_get_current (WListbox * l, char **string, void **extra)
|
|
{
|
|
WLEntry *e = NULL;
|
|
gboolean ok;
|
|
|
|
if (l != NULL)
|
|
e = listbox_get_nth_item (l, l->pos);
|
|
|
|
ok = (e != NULL);
|
|
|
|
if (string != NULL)
|
|
*string = ok ? e->text : NULL;
|
|
|
|
if (extra != NULL)
|
|
*extra = ok ? e->data : NULL;
|
|
}
|
|
|
|
/* --------------------------------------------------------------------------------------------- */
|
|
|
|
WLEntry *
|
|
listbox_get_nth_item (const WListbox * l, int pos)
|
|
{
|
|
if (!listbox_is_empty (l) && pos >= 0)
|
|
{
|
|
GList *item;
|
|
|
|
item = g_queue_peek_nth_link (l->list, (guint) pos);
|
|
if (item != NULL)
|
|
return LENTRY (item->data);
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/* --------------------------------------------------------------------------------------------- */
|
|
|
|
GList *
|
|
listbox_get_first_link (const WListbox * l)
|
|
{
|
|
return (l == NULL || l->list == NULL) ? NULL : g_queue_peek_head_link (l->list);
|
|
}
|
|
|
|
/* --------------------------------------------------------------------------------------------- */
|
|
|
|
void
|
|
listbox_remove_current (WListbox * l)
|
|
{
|
|
if (!listbox_is_empty (l))
|
|
{
|
|
GList *current;
|
|
int length;
|
|
|
|
current = g_queue_peek_nth_link (l->list, (guint) l->pos);
|
|
listbox_entry_free (LENTRY (current->data));
|
|
g_queue_delete_link (l->list, current);
|
|
|
|
length = g_queue_get_length (l->list);
|
|
|
|
if (length == 0)
|
|
l->top = l->pos = 0;
|
|
else if (l->pos >= length)
|
|
l->pos = length - 1;
|
|
}
|
|
}
|
|
|
|
/* --------------------------------------------------------------------------------------------- */
|
|
|
|
gboolean
|
|
listbox_is_empty (const WListbox * l)
|
|
{
|
|
return (l == NULL || l->list == NULL || g_queue_is_empty (l->list));
|
|
}
|
|
|
|
/* --------------------------------------------------------------------------------------------- */
|
|
|
|
void
|
|
listbox_set_list (WListbox * l, GList * list)
|
|
{
|
|
listbox_remove_list (l);
|
|
|
|
if (l != NULL)
|
|
{
|
|
GList *ll;
|
|
|
|
l->list = g_queue_new ();
|
|
|
|
for (ll = list; ll != NULL; ll = g_list_next (ll))
|
|
g_queue_push_tail (l->list, ll->data);
|
|
|
|
g_list_free (list);
|
|
}
|
|
}
|
|
|
|
/* --------------------------------------------------------------------------------------------- */
|
|
|
|
void
|
|
listbox_remove_list (WListbox * l)
|
|
{
|
|
if (l != NULL)
|
|
{
|
|
if (l->list != NULL)
|
|
{
|
|
g_queue_foreach (l->list, (GFunc) listbox_entry_free, NULL);
|
|
g_queue_free (l->list);
|
|
}
|
|
|
|
l->list = NULL;
|
|
l->pos = l->top = 0;
|
|
}
|
|
}
|
|
|
|
/* --------------------------------------------------------------------------------------------- */
|
|
|
|
char *
|
|
listbox_add_item (WListbox * l, listbox_append_t pos, int hotkey, const char *text, void *data,
|
|
gboolean free_data)
|
|
{
|
|
WLEntry *entry;
|
|
|
|
if (l == NULL)
|
|
return NULL;
|
|
|
|
if (!l->allow_duplicates && (listbox_search_text (l, text) >= 0))
|
|
return NULL;
|
|
|
|
entry = g_new (WLEntry, 1);
|
|
entry->text = g_strdup (text);
|
|
entry->data = data;
|
|
entry->free_data = free_data;
|
|
entry->hotkey = hotkey;
|
|
|
|
listbox_append_item (l, entry, pos);
|
|
|
|
return entry->text;
|
|
}
|
|
|
|
/* --------------------------------------------------------------------------------------------- */
|