/*  Glimmer - linebar.c
 *
 *  This program 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 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program 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, write to the Free Software
 *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */

#include "declarations.h"
#include "linebar.h"
#include "main.h"
#include "misc.h"
#include "settings.h"
#include "widgets/gdsfile.h"

static void check_line_button_cb (GtkWidget * widget, GtkWidget * target);

GtkWidget *linebar = NULL;
GtkWidget *line_combo;
GtkWidget *line_entry;

static GList *line_history = NULL;

void
make_line_toolbar (void)
{
    GtkWidget *line_button;
    GtkWidget *pixmapwid;

    linebar = gtk_toolbar_new (GTK_ORIENTATION_HORIZONTAL, GTK_TOOLBAR_ICONS);
    gtk_container_set_border_width (GTK_CONTAINER (linebar), 2);
    gtk_toolbar_set_button_relief (GTK_TOOLBAR (linebar), GTK_RELIEF_NONE);
    gtk_widget_show (linebar);

    line_combo = gtk_combo_new ();
    gtk_widget_set_usize (line_combo, 100, 23);
    gtk_combo_disable_activate (GTK_COMBO (line_combo));
    gtk_combo_set_case_sensitive (GTK_COMBO (line_combo), TRUE);
    gtk_toolbar_append_widget (GTK_TOOLBAR (linebar), line_combo,
                               _("Line Number"), NULL);
    line_entry = GTK_COMBO (line_combo)->entry;
    gtk_signal_connect (GTK_OBJECT (line_entry), "activate",
                        GTK_SIGNAL_FUNC (execute_line_cb), NULL);
    line_combo_set_history (build_glist_from_file
                            ("line.hist", general_preferences.history));
    gtk_widget_show (line_combo);
    gtk_toolbar_append_space (GTK_TOOLBAR (linebar));
    pixmapwid =
        gnome_stock_pixmap_widget_at_size (window, GNOME_STOCK_PIXMAP_JUMP_TO,
                                           24, 24);
    line_button =
        gtk_toolbar_append_item (GTK_TOOLBAR (linebar), 0, _("Jump to a line."),
                                 0, pixmapwid,
                                 GTK_SIGNAL_FUNC (execute_line_cb), 0);
    gtk_widget_set_sensitive (line_button, FALSE);
    gtk_signal_connect (GTK_OBJECT (line_entry), "changed",
                        GTK_SIGNAL_FUNC (check_line_button_cb), line_button);
    gnome_app_add_docked (GNOME_APP (app), linebar, "LineBar",
                          GNOME_DOCK_ITEM_BEH_NORMAL |
                          GNOME_DOCK_ITEM_BEH_NEVER_VERTICAL, GNOME_DOCK_TOP, 2,
                          7, 0);
}

void
execute_line_cb (GtkWidget * widget, gpointer data)
{
    GtkExText *extext;
    gchar *text;
    gint line_num;

    extext = GTK_EXTEXT (cur_file->text);

    text = gtk_entry_get_text (GTK_ENTRY (line_entry));
    if (strlen (text) > 0) {
        if (sscanf (text, "%d", &line_num) && line_num >= 1
            && line_num <= extext->line_count) {
            add_string_to_file ("line.hist", text);
            line_combo_add_string (text);
            gtk_extext_set_line (extext, line_num - 1);
            gtk_widget_grab_focus (GTK_WIDGET (extext));
        } else
            display_message ("Line not found.", FLASH);
    }
}

static void
check_line_button_cb (GtkWidget * widget, GtkWidget * target)
{
    gchar *text;
    gint line_num;

    text = gtk_entry_get_text (GTK_ENTRY (line_entry));
    if (text && strlen (text) > 0 && sscanf (text, "%d", &line_num)
        && line_num >= 1)
        gtk_widget_set_sensitive (target, TRUE);
    else
        gtk_widget_set_sensitive (target, FALSE);
}

void
line_combo_set_history (GList * history)
{
    if (history == NULL)
        return;
    line_history = history;
    gtk_combo_set_popdown_strings (GTK_COMBO (line_combo), line_history);
    gtk_entry_set_text (GTK_ENTRY (line_entry), "");
}

gboolean
line_combo_add_string (gchar * string)
{
    gint pos;
    gpointer temp;
    GList *ptr;
    gboolean success = FALSE;

    pos = check_list_for_string (line_history, string);
    if (pos) {
        temp = g_list_nth_data (line_history, pos - 1);
        line_history = g_list_remove (line_history, temp);
    } else {
        temp = g_new (char, strlen (string) + 1);

        strcpy ((gchar *) temp, string);
    }

    line_history = g_list_prepend (line_history, temp);

    while (g_list_length (line_history) > general_preferences.history) {
        ptr = g_list_nth (line_history, g_list_length (line_history) - 1);
        if (ptr) {
            temp = ptr->data;
            line_history = g_list_remove (line_history, ptr->data);
            g_free (ptr->data);
        }
    }
    gtk_combo_set_popdown_strings (GTK_COMBO (line_combo), line_history);
    return (success);
}