r233: Tidied up choices.c quite a lot. Also, replaced the 'guess' file with a

[rox-filer/dt.git] / ROX-Filer / src / menu.c

/*
 * $Id$
 *
 * ROX-Filer, filer for the ROX desktop project
 * Copyright (C) 2000, Thomas Leonard, <tal197@ecs.soton.ac.uk>.
 *
 * 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
 */

/* menu.c - code for handling the popup menu */

#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <sys/param.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>

#include <gdk/gdkx.h>
#include <gtk/gtk.h>

#include "run.h"
#include "action.h"
#include "filer.h"
#include "type.h"
#include "support.h"
#include "gui_support.h"
#include "options.h"
#include "choices.h"
#include "gtksavebox.h"
#include "mount.h"
#include "minibuffer.h"

#define C_ "<control>"

#define MENU_MARGIN 32

GtkAccelGroup   *filer_keys;
GtkAccelGroup   *panel_keys;

static GtkWidget *popup_menu = NULL;    /* Currently open menu */

static gint updating_menu = 0;          /* Non-zero => ignore activations */

/* Options */
static GtkWidget *xterm_here_entry;
static char *xterm_here_value;

/* Static prototypes */

static void position_menu(GtkMenu *menu, gint *x, gint *y, gpointer data);
static void menu_closed(GtkWidget *widget);
static void items_sensitive(gboolean state);
static char *load_xterm_here(char *data);
static void savebox_show(guchar *title, guchar *path, MaskedPixmap *image,
                gboolean (*callback)(guchar *current, guchar *new));
static gint save_to_file(GtkSavebox *savebox, guchar *pathname);

/* Note that for these callbacks none of the arguments are used. */
static void not_yet(gpointer data, guint action, GtkWidget *widget);

static void large(gpointer data, guint action, GtkWidget *widget);
static void small(gpointer data, guint action, GtkWidget *widget);
static void full_info(gpointer data, guint action, GtkWidget *widget);

static void sort_name(gpointer data, guint action, GtkWidget *widget);
static void sort_type(gpointer data, guint action, GtkWidget *widget);
static void sort_size(gpointer data, guint action, GtkWidget *widget);
static void sort_date(gpointer data, guint action, GtkWidget *widget);

static void hidden(gpointer data, guint action, GtkWidget *widget);
static void refresh(gpointer data, guint action, GtkWidget *widget);

static void copy_item(gpointer data, guint action, GtkWidget *widget);
static void rename_item(gpointer data, guint action, GtkWidget *widget);
static void link_item(gpointer data, guint action, GtkWidget *widget);
static void open_file(gpointer data, guint action, GtkWidget *widget);
static void help(gpointer data, guint action, GtkWidget *widget);
static void show_file_info(gpointer data, guint action, GtkWidget *widget);
static void mount(gpointer data, guint action, GtkWidget *widget);
static void delete(gpointer data, guint action, GtkWidget *widget);
static void remove_link(gpointer data, guint action, GtkWidget *widget);
static void usage(gpointer data, guint action, GtkWidget *widget);
static void chmod_items(gpointer data, guint action, GtkWidget *widget);
static void find(gpointer data, guint action, GtkWidget *widget);

static void open_vfs_rpm(gpointer data, guint action, GtkWidget *widget);
static void open_vfs_utar(gpointer data, guint action, GtkWidget *widget);
static void open_vfs_uzip(gpointer data, guint action, GtkWidget *widget);

static void select_all(gpointer data, guint action, GtkWidget *widget);
static void clear_selection(gpointer data, guint action, GtkWidget *widget);
static void show_options(gpointer data, guint action, GtkWidget *widget);
static void new_directory(gpointer data, guint action, GtkWidget *widget);
static void xterm_here(gpointer data, guint action, GtkWidget *widget);

static void open_parent_same(gpointer data, guint action, GtkWidget *widget);
static void open_parent(gpointer data, guint action, GtkWidget *widget);
static void new_window(gpointer data, guint action, GtkWidget *widget);
static void close_window(gpointer data, guint action, GtkWidget *widget);
static void enter_path(gpointer data, guint action, GtkWidget *widget);
static void rox_help(gpointer data, guint action, GtkWidget *widget);

static void open_as_dir(gpointer data, guint action, GtkWidget *widget);
static void close_panel(gpointer data, guint action, GtkWidget *widget);

static GtkWidget *create_options();
static void update_options();
static void set_options();
static void save_options();

static OptionsSection options =
{
        "Menu options",
        create_options,
        update_options,
        set_options,
        save_options
};


static GtkWidget        *filer_menu;            /* The popup filer menu */
static GtkWidget        *filer_file_item;       /* The File '' label */
static GtkWidget        *filer_file_menu;       /* The File '' menu */
static GtkWidget        *filer_vfs_menu;        /* The Open VFS menu */
static GtkWidget        *filer_hidden_menu;     /* The Show Hidden item */
static GtkWidget        *filer_new_window;      /* The New Window item */
static GtkWidget        *panel_menu;            /* The popup panel menu */
static GtkWidget        *panel_hidden_menu;     /* The Show Hidden item */

/* Used for Copy, etc */
static GtkWidget        *savebox = NULL;        
static guchar           *current_path = NULL;
static gboolean (*current_savebox_callback)(guchar *current, guchar *new);

static gint             screen_width, screen_height;

static GtkItemFactoryEntry filer_menu_def[] = {
{"/Display",                    NULL,   NULL, 0, "<Branch>"},
{"/Display/Large Icons",        NULL,   large, 0, NULL},
{"/Display/Small Icons",        NULL,   small, 0, NULL},
{"/Display/Full Info",          NULL,   full_info, 0, NULL},
{"/Display/Separator",          NULL,   NULL, 0, "<Separator>"},
{"/Display/Sort by Name",       NULL,   sort_name, 0, NULL},
{"/Display/Sort by Type",       NULL,   sort_type, 0, NULL},
{"/Display/Sort by Date",       NULL,   sort_date, 0, NULL},
{"/Display/Sort by Size",       NULL,   sort_size, 0, NULL},
{"/Display/Separator",          NULL,   NULL, 0, "<Separator>"},
{"/Display/Show Hidden",        C_"H",  hidden, 0, "<ToggleItem>"},
{"/Display/Refresh",            C_"L",  refresh, 0,     NULL},
{"/File",                       NULL,   NULL, 0, "<Branch>"},
{"/File/Copy...",               NULL,   copy_item, 0, NULL},
{"/File/Rename...",             NULL,   rename_item, 0, NULL},
{"/File/Link...",               NULL,   link_item, 0, NULL},
{"/File/Shift Open",            NULL,   open_file, 0, NULL},
{"/File/Help",                  "F1",   help, 0, NULL},
{"/File/Info",                  "I",    show_file_info, 0, NULL},
{"/File/Open VFS",              NULL,   NULL, 0, "<Branch>"},
{"/File/Open VFS/Unzip",        NULL,   open_vfs_uzip, 0, NULL},
{"/File/Open VFS/Untar",        NULL,   open_vfs_utar, 0, NULL},
{"/File/Open VFS/RPM",          NULL,   open_vfs_rpm, 0, NULL},
{"/File/Separator",             NULL,   NULL, 0, "<Separator>"},
{"/File/Mount",                 "M",    mount, 0,       NULL},
{"/File/Delete",                C_"X",  delete, 0,      NULL},
{"/File/Disk Usage",            "U",    usage, 0, NULL},
{"/File/Permissions",           NULL,   chmod_items, 0, NULL},
{"/File/Touch",                 NULL,   not_yet, 0, NULL},
{"/File/Find",                  NULL,   find, 0, NULL},
{"/Select All",                 C_"A",  select_all, 0, NULL},
{"/Clear Selection",            C_"Z",  clear_selection, 0, NULL},
{"/Options...",                 NULL,   show_options, 0, NULL},
{"/New Directory...",           NULL,   new_directory, 0, NULL},
{"/Xterm Here",                 NULL,   xterm_here, 0, NULL},
{"/Window",                     NULL,   NULL, 0, "<Branch>"},
{"/Window/Parent, New Window",  NULL,   open_parent, 0, NULL},
{"/Window/Parent, Same Window", NULL,   open_parent_same, 0, NULL},
{"/Window/New Window",          NULL,   new_window, 0, NULL},
{"/Window/Close Window",        C_"Q",  close_window, 0, NULL},
{"/Window/Enter Path",          NULL,   enter_path, 0, NULL},
{"/Window/Separator",           NULL,   NULL, 0, "<Separator>"},
{"/Window/Show ROX-Filer help", NULL,   rox_help, 0, NULL},
};

static GtkItemFactoryEntry panel_menu_def[] = {
{"/Display",                    NULL,   NULL, 0, "<Branch>"},
{"/Display/Sort by Name",       NULL,   sort_name, 0, NULL},
{"/Display/Sort by Type",       NULL,   sort_type, 0, NULL},
{"/Display/Sort by Date",       NULL,   sort_date, 0, NULL},
{"/Display/Sort by Size",       NULL,   sort_size, 0, NULL},
{"/Display/Separator",          NULL,   NULL, 0, "<Separator>"},
{"/Display/Show Hidden",        NULL,   hidden, 0, "<ToggleItem>"},
{"/Display/Refresh",            NULL,   refresh, 0,     NULL},
{"/Open Panel as Directory",    NULL,   open_as_dir, 0, NULL},
{"/Close Panel",                NULL,   close_panel, 0, NULL},
{"/Separator",                  NULL,   NULL, 0, "<Separator>"},
{"/ROX-Filer Help",             NULL,   rox_help, 0, NULL},
{"/ROX-Filer Options...",       NULL,   show_options, 0, NULL},
{"/Separator",                  NULL,   NULL, 0, "<Separator>"},
{"/Show Help",                  NULL,   help, 0, NULL},
{"/Remove Item",                NULL,   remove_link, 0, NULL},
};

typedef struct _FileStatus FileStatus;

/* This is for the 'file(1) says...' thing */
struct _FileStatus
{
        int     fd;     /* FD to read from, -1 if closed */
        int     input;  /* Input watcher tag if fd valid */
        GtkLabel *label;        /* Widget to output to */
        gboolean        start;  /* No output yet */
};

void menu_init()
{
        GtkItemFactory          *item_factory;
        char                    *menurc;
        GList                   *items;

        /* This call starts returning strange values after a while, so get
         * the result here during init.
         */
        gdk_window_get_size(GDK_ROOT_PARENT(), &screen_width, &screen_height);

        filer_keys = gtk_accel_group_new();
        item_factory = gtk_item_factory_new(GTK_TYPE_MENU,
                                            "<filer>",
                                            filer_keys);
        gtk_item_factory_create_items(item_factory,
                        sizeof(filer_menu_def) / sizeof(*filer_menu_def),
                        filer_menu_def,
                        NULL);
        filer_menu = gtk_item_factory_get_widget(item_factory, "<filer>");
        filer_file_menu = gtk_item_factory_get_widget(item_factory,
                        "<filer>/File");
        filer_vfs_menu = gtk_item_factory_get_widget(item_factory,
                        "<filer>/File/Open VFS");
        filer_hidden_menu = gtk_item_factory_get_widget(item_factory,
                        "<filer>/Display/Show Hidden");
        items = gtk_container_children(GTK_CONTAINER(filer_menu));
        filer_file_item = GTK_BIN(g_list_nth(items, 1)->data)->child;
        g_list_free(items);
        filer_new_window = GTK_BIN(gtk_item_factory_get_widget(item_factory,
                        "<filer>/Window/New Window"))->child;

        panel_keys = gtk_accel_group_new();
        item_factory = gtk_item_factory_new(GTK_TYPE_MENU,
                                            "<panel>",
                                            panel_keys);
        gtk_item_factory_create_items(item_factory,
                        sizeof(panel_menu_def) / sizeof(*panel_menu_def),
                        panel_menu_def,
                        NULL);
        panel_menu = gtk_item_factory_get_widget(item_factory, "<panel>");
        panel_hidden_menu = gtk_item_factory_get_widget(item_factory,
                        "<panel>/Display/Show Hidden");

        menurc = choices_find_path_load("menus", "ROX-Filer");
        if (menurc)
                gtk_item_factory_parse_rc(menurc);

        gtk_accel_group_lock(panel_keys);

        gtk_signal_connect(GTK_OBJECT(filer_menu), "unmap_event",
                        GTK_SIGNAL_FUNC(menu_closed), NULL);
        gtk_signal_connect(GTK_OBJECT(panel_menu), "unmap_event",
                        GTK_SIGNAL_FUNC(menu_closed), NULL);
        gtk_signal_connect(GTK_OBJECT(filer_file_menu), "unmap_event",
                        GTK_SIGNAL_FUNC(menu_closed), NULL);

        options_sections = g_slist_prepend(options_sections, &options);
        xterm_here_value = g_strdup("xterm");
        option_register("xterm_here", load_xterm_here);

        savebox = gtk_savebox_new();
        gtk_signal_connect_object(GTK_OBJECT(savebox), "save_to_file",
                                GTK_SIGNAL_FUNC(save_to_file), NULL);
        gtk_signal_connect_object(GTK_OBJECT(savebox), "save_done",
                                GTK_SIGNAL_FUNC(gtk_widget_hide),
                                GTK_OBJECT(savebox));
}
 
/* Build up some option widgets to go in the options dialog, but don't
 * fill them in yet.
 */
static GtkWidget *create_options()
{
        GtkWidget       *table, *label;

        table = gtk_table_new(2, 2, FALSE);
        gtk_container_set_border_width(GTK_CONTAINER(table), 4);

        label = gtk_label_new("To set the keyboard short-cuts you simply open "
                        "the menu over a filer window, move the pointer over "
                        "the item you want to use and press a key. The key "
                        "will appear next to the menu item and you can just "
                        "press that key without opening the menu in future. "
                        "To save the current menu short-cuts for next time, "
                        "click the Save button at the bottom of this window.");
        gtk_label_set_line_wrap(GTK_LABEL(label), TRUE);
        gtk_table_attach_defaults(GTK_TABLE(table), label, 0, 2, 0, 1);

        label = gtk_label_new("'Xterm here' program:");
        gtk_table_attach_defaults(GTK_TABLE(table), label, 0, 1, 1, 2);
        xterm_here_entry = gtk_entry_new();
        gtk_table_attach_defaults(GTK_TABLE(table), xterm_here_entry,
                        1, 2, 1, 2);

        return table;
}

static char *load_xterm_here(char *data)
{
        g_free(xterm_here_value);
        xterm_here_value = g_strdup(data);
        return NULL;
}

static void update_options()
{
        gtk_entry_set_text(GTK_ENTRY(xterm_here_entry), xterm_here_value);
}

static void set_options()
{
        g_free(xterm_here_value);
        xterm_here_value = g_strdup(gtk_entry_get_text(
                                GTK_ENTRY(xterm_here_entry)));
}

static void save_options()
{
        char    *menurc;

        menurc = choices_find_path_save("menus", "ROX-Filer", TRUE);
        if (menurc)
                gtk_item_factory_dump_rc(menurc, NULL, TRUE);

        option_write("xterm_here", xterm_here_value);
}


static void items_sensitive(gboolean state)
{
        int     n = 7;
        GList   *items, *item;

        items = item = gtk_container_children(GTK_CONTAINER(filer_file_menu));
        while (item && n--)
        {
                gtk_widget_set_sensitive(GTK_BIN(item->data)->child, state);
                item = item->next;
        }
        g_list_free(items);

        items = item = gtk_container_children(GTK_CONTAINER(filer_vfs_menu));
        while (item)
        {
                gtk_widget_set_sensitive(GTK_BIN(item->data)->child, state);
                item = item->next;
        }
        g_list_free(items);
}

static void position_menu(GtkMenu *menu, gint *x, gint *y, gpointer data)
{
        int             *pos = (int *) data;
        GtkRequisition  requisition;

        gtk_widget_size_request(GTK_WIDGET(menu), &requisition);

        if (pos[0] == -1)
                *x = screen_width - MENU_MARGIN - requisition.width;
        else if (pos[0] == -2)
                *x = MENU_MARGIN;
        else
                *x = pos[0] - (requisition.width >> 2);
                
        if (pos[1] == -1)
                *y = screen_height - MENU_MARGIN - requisition.height;
        else if (pos[1] == -2)
                *y = MENU_MARGIN;
        else
                *y = pos[1] - (requisition.height >> 2);

        *x = CLAMP(*x, 0, screen_width - requisition.width);
        *y = CLAMP(*y, 0, screen_height - requisition.height);
}

void show_filer_menu(FilerWindow *filer_window, GdkEventButton *event,
                     int item)
{
        DirItem         *file_item;
        int             pos[2];

        updating_menu++;
        
        pos[0] = event->x_root;
        pos[1] = event->y_root;

        window_with_focus = filer_window;

        switch (filer_window->panel_type)
        {
                case PANEL_TOP:
                        pos[1] = -2;
                        break;
                case PANEL_BOTTOM:
                        pos[1] = -1;
                        break;
                default:
                        break;
        }

        if (filer_window->panel_type)
                collection_clear_selection(filer_window->collection); /* ??? */

        if (filer_window->collection->number_selected == 0 && item >= 0)
        {
                collection_select_item(filer_window->collection, item);
                filer_window->temp_item_selected = TRUE;
        }
        else
                filer_window->temp_item_selected = FALSE;

        if (filer_window->panel_type)
        {
                gtk_check_menu_item_set_active(
                                GTK_CHECK_MENU_ITEM(panel_hidden_menu),
                                filer_window->show_hidden);
        }
        else
        {
                GtkWidget       *file_label, *file_menu;
                Collection      *collection = filer_window->collection;
                GString         *buffer;

                file_label = filer_file_item;
                file_menu = filer_file_menu;
                gtk_check_menu_item_set_active(
                                GTK_CHECK_MENU_ITEM(filer_hidden_menu),
                                filer_window->show_hidden);
                buffer = g_string_new(NULL);
                switch (collection->number_selected)
                {
                        case 0:
                                g_string_assign(buffer, "Next Click");
                                items_sensitive(TRUE);
                                break;
                        case 1:
                                items_sensitive(TRUE);
                                file_item = selected_item(
                                                filer_window->collection);
                                g_string_sprintf(buffer, "%s '%s'",
                                                basetype_name(file_item),
                                                file_item->leafname);
                                break;
                        default:
                                items_sensitive(FALSE);
                                g_string_sprintf(buffer, "%d items",
                                                collection->number_selected);
                                break;
                }
                gtk_label_set_text(GTK_LABEL(file_label), buffer->str);
                g_string_free(buffer, TRUE);
        }


        gtk_widget_set_sensitive(filer_new_window, !o_unique_filer_windows);

        if (filer_window->panel_type)
                popup_menu = panel_menu;
        else
                popup_menu = (event->state & GDK_CONTROL_MASK)
                                ? filer_file_menu
                                : filer_menu;

        updating_menu--;
        
        gtk_menu_popup(GTK_MENU(popup_menu), NULL, NULL, position_menu,
                        (gpointer) pos, event->button, event->time);
}

static void menu_closed(GtkWidget *widget)
{
        if (window_with_focus == NULL || widget != popup_menu)
                return;                 /* Close panel item chosen? */

        if (window_with_focus->temp_item_selected)
        {
                collection_clear_selection(window_with_focus->collection);
                window_with_focus->temp_item_selected = FALSE;
        }
}

void target_callback(Collection *collection, gint item, gpointer real_fn)
{
        g_return_if_fail(window_with_focus != NULL);
        g_return_if_fail(window_with_focus->collection == collection);
        g_return_if_fail(real_fn != NULL);
        
        collection_wink_item(collection, item);
        collection_clear_selection(collection);
        collection_select_item(collection, item);
        ((CollectionTargetFunc)real_fn)(NULL, 0, collection);
        if (item < collection->number_of_items)
                collection_unselect_item(collection, item);
}

/* Actions */

/* Fake action to warn when a menu item does nothing */
static void not_yet(gpointer data, guint action, GtkWidget *widget)
{
        delayed_error("ROX-Filer", "Sorry, that feature isn't implemented yet");
}

static void large(gpointer data, guint action, GtkWidget *widget)
{
        g_return_if_fail(window_with_focus != NULL);

        filer_style_set(window_with_focus, LARGE_ICONS);
}

static void small(gpointer data, guint action, GtkWidget *widget)
{
        g_return_if_fail(window_with_focus != NULL);

        filer_style_set(window_with_focus, SMALL_ICONS);
}

static void full_info(gpointer data, guint action, GtkWidget *widget)
{
        g_return_if_fail(window_with_focus != NULL);

        filer_style_set(window_with_focus, FULL_INFO);
}

static void sort_name(gpointer data, guint action, GtkWidget *widget)
{
        g_return_if_fail(window_with_focus != NULL);

        filer_set_sort_fn(window_with_focus, sort_by_name);
}

static void sort_type(gpointer data, guint action, GtkWidget *widget)
{
        g_return_if_fail(window_with_focus != NULL);

        filer_set_sort_fn(window_with_focus, sort_by_type);
}

static void sort_date(gpointer data, guint action, GtkWidget *widget)
{
        g_return_if_fail(window_with_focus != NULL);

        filer_set_sort_fn(window_with_focus, sort_by_date);
}

static void sort_size(gpointer data, guint action, GtkWidget *widget)
{
        g_return_if_fail(window_with_focus != NULL);

        filer_set_sort_fn(window_with_focus, sort_by_size);
}

static void hidden(gpointer data, guint action, GtkWidget *widget)
{
        if (updating_menu)
                return;

        g_return_if_fail(window_with_focus != NULL);

        filer_set_hidden(window_with_focus, !window_with_focus->show_hidden);
}

static void refresh(gpointer data, guint action, GtkWidget *widget)
{
        g_return_if_fail(window_with_focus != NULL);

        full_refresh();
        update_dir(window_with_focus, TRUE);
}

static void mount(gpointer data, guint action, GtkWidget *widget)
{
        g_return_if_fail(window_with_focus != NULL);

        if (window_with_focus->collection->number_selected == 0)
                collection_target(window_with_focus->collection,
                                target_callback, mount);
        else
                action_mount(window_with_focus, NULL);
}

static void delete(gpointer data, guint action, GtkWidget *widget)
{
        g_return_if_fail(window_with_focus != NULL);

        if (window_with_focus->collection->number_selected == 0)
                collection_target(window_with_focus->collection,
                                target_callback, delete);
        else
                action_delete(window_with_focus);
}

static void remove_link(gpointer data, guint action, GtkWidget *widget)
{
        g_return_if_fail(window_with_focus != NULL);

        if (window_with_focus->collection->number_selected > 1)
        {
                report_error("ROX-Filer", "You can only remove one link "
                                "at a time");
                return;
        }
        else if (window_with_focus->collection->number_selected == 0)
                collection_target(window_with_focus->collection,
                                target_callback, remove_link);
        else
        {
                struct stat info;
                DirItem *item;
                guchar  *path;
                
                item = selected_item(window_with_focus->collection);

                path = make_path(window_with_focus->path, item->leafname)->str;
                if (lstat(path, &info))
                        report_error("ROX-Filer", g_strerror(errno));
                else if (!S_ISLNK(info.st_mode))
                        report_error("ROX-Filer",
                                "You can only remove symbolic links this way - "
                                "try the 'Open Panel as Directory' item.");
                else if (unlink(path))
                        report_error("ROX-Filer", g_strerror(errno));
                else
                        update_dir(window_with_focus, TRUE);
        }
}

static void usage(gpointer data, guint action, GtkWidget *widget)
{
        g_return_if_fail(window_with_focus != NULL);

        if (window_with_focus->collection->number_selected == 0)
                collection_target(window_with_focus->collection,
                                target_callback, usage);
        else
                action_usage(window_with_focus);
}

static void chmod_items(gpointer data, guint action, GtkWidget *widget)
{
        g_return_if_fail(window_with_focus != NULL);

        if (window_with_focus->collection->number_selected == 0)
                collection_target(window_with_focus->collection,
                                target_callback, chmod_items);
        else
                action_chmod(window_with_focus);
}

static void find(gpointer data, guint action, GtkWidget *widget)
{
        g_return_if_fail(window_with_focus != NULL);

        if (window_with_focus->collection->number_selected == 0)
                collection_target(window_with_focus->collection,
                                target_callback, find);
        else
                action_find(window_with_focus);
}

/* This pops up our savebox widget, cancelling any currently open one,
 * and allows the user to pick a new path for it.
 * Once the new path has been picked, the callback will be called with
 * both the current and new paths.
 */
static void savebox_show(guchar *title, guchar *path, MaskedPixmap *image,
                gboolean (*callback)(guchar *current, guchar *new))
{
        if (GTK_WIDGET_VISIBLE(savebox))
                gtk_widget_hide(savebox);

        if (current_path)
                g_free(current_path);
        current_path = g_strdup(path);
        current_savebox_callback = callback;

        gtk_window_set_title(GTK_WINDOW(savebox), title);
        gtk_savebox_set_pathname(GTK_SAVEBOX(savebox), current_path);
        gtk_savebox_set_icon(GTK_SAVEBOX(savebox), image->pixmap, image->mask);
                                
        gtk_widget_grab_focus(GTK_SAVEBOX(savebox)->entry);
        gtk_widget_show(savebox);
}

static gint save_to_file(GtkSavebox *savebox, guchar *pathname)
{
        g_return_val_if_fail(current_savebox_callback != NULL,
                        GTK_XDS_SAVE_ERROR);

        return current_savebox_callback(current_path, pathname)
                        ? GTK_XDS_SAVED : GTK_XDS_SAVE_ERROR;
}

static gboolean copy_cb(guchar *current, guchar *new)
{
        char    *new_dir, *leaf;
        GSList  *local_paths;

        if (new[0] != '/')
        {
                report_error("ROX-Filer", "New pathname is not absolute");
                return FALSE;
        }

        if (new[strlen(new) - 1] == '/')
        {
                new_dir = g_strdup(new);
                leaf = NULL;
        }
        else
        {
                guchar *slash;
                
                slash = strrchr(new, '/');
                new_dir = g_strndup(new, slash - new);
                leaf = slash + 1;
        }

        local_paths = g_slist_append(NULL, current);
        action_copy(local_paths, new_dir, leaf);
        g_slist_free(local_paths);

        g_free(new_dir);

        return TRUE;
}

#define SHOW_SAVEBOX(title, callback)   \
{       \
        DirItem *item;  \
        guchar  *path;  \
        item = selected_item(collection);       \
        path = make_path(window_with_focus->path, item->leafname)->str; \
        savebox_show(title, path, item->image, callback);       \
}

static void copy_item(gpointer data, guint action, GtkWidget *widget)
{
        Collection *collection;
        
        g_return_if_fail(window_with_focus != NULL);

        collection = window_with_focus->collection;
        if (collection->number_selected > 1)
        {
                report_error("ROX-Filer", "You cannot do this to more than "
                                "one item at a time");
                return;
        }
        else if (collection->number_selected != 1)
                collection_target(collection, target_callback, copy_item);
        else
                SHOW_SAVEBOX("Copy", copy_cb);
}

static gboolean rename_cb(guchar *current, guchar *new)
{
        if (rename(current, new))
        {
                report_error("ROX-Filer: rename()", g_strerror(errno));
                return FALSE;
        }
        return TRUE;
}

static void rename_item(gpointer data, guint action, GtkWidget *widget)
{
        Collection *collection;
        
        g_return_if_fail(window_with_focus != NULL);

        collection = window_with_focus->collection;
        if (collection->number_selected > 1)
        {
                report_error("ROX-Filer", "You cannot do this to more than "
                                "one item at a time");
                return;
        }
        else if (collection->number_selected != 1)
                collection_target(collection, target_callback, rename_item);
        else
                SHOW_SAVEBOX("Rename", rename_cb);
}

static gboolean link_cb(guchar *initial, guchar *path)
{
        if (symlink(initial, path))
        {
                report_error("ROX-Filer: symlink()", g_strerror(errno));
                return FALSE;
        }
        return TRUE;
}

static void link_item(gpointer data, guint action, GtkWidget *widget)
{
        Collection *collection;
        
        g_return_if_fail(window_with_focus != NULL);

        collection = window_with_focus->collection;
        if (collection->number_selected > 1)
        {
                report_error("ROX-Filer", "You cannot do this to more than "
                                "one item at a time");
                return;
        }
        else if (collection->number_selected != 1)
                collection_target(collection, target_callback, link_item);
        else
                SHOW_SAVEBOX("Symlink", link_cb);
}

static void open_file(gpointer data, guint action, GtkWidget *widget)
{
        Collection *collection;
        
        g_return_if_fail(window_with_focus != NULL);

        collection = window_with_focus->collection;
        if (collection->number_selected > 1)
        {
                report_error("ROX-Filer", "You cannot do this to more than "
                                "one item at a time");
                return;
        }
        else if (collection->number_selected != 1)
                collection_target(collection, target_callback, open_file);
        else
                filer_openitem(window_with_focus,
                                selected_item_number(collection),
                                OPEN_SAME_WINDOW | OPEN_SHIFT);
}

/* Got some data from file(1) - stick it in the window. */
static void add_file_output(FileStatus *fs,
                            gint source, GdkInputCondition condition)
{
        char    buffer[20];
        char    *str;
        int     got;

        got = read(source, buffer, sizeof(buffer) - 1);
        if (got <= 0)
        {
                int     err = errno;
                gtk_input_remove(fs->input);
                close(source);
                fs->fd = -1;
                if (got < 0)
                        delayed_error("ROX-Filer: file(1) says...",
                                        g_strerror(err));
                return;
        }
        buffer[got] = '\0';

        if (fs->start)
        {
                str = "";
                fs->start = FALSE;
        }
        else
                gtk_label_get(fs->label, &str);

        str = g_strconcat(str, buffer, NULL);
        gtk_label_set_text(fs->label, str);
        g_free(str);
}

static void file_info_destroyed(GtkWidget *widget, FileStatus *fs)
{
        if (fs->fd != -1)
        {
                gtk_input_remove(fs->input);
                close(fs->fd);
        }

        g_free(fs);
}

/* g_free() the result */
guchar *pretty_type(DirItem *file, guchar *path)
{
        if (file->mime_type)
                return g_strconcat(file->mime_type->media_type, "/",
                                file->mime_type->subtype, NULL);

        if (file->flags & ITEM_FLAG_APPDIR)
                return g_strdup("ROX application");

        if (file->flags & ITEM_FLAG_SYMLINK)
        {
                char    p[MAXPATHLEN + 1];
                int     got;
                got = readlink(path, p, MAXPATHLEN);
                if (got > 0 && got <= MAXPATHLEN)
                {
                        p[got] = '\0';
                        return g_strconcat("Symbolic link to ", p, NULL);
                }

                return g_strdup("Symbolic link");
        }

        if (file->flags & ITEM_FLAG_MOUNT_POINT)
        {
                MountPoint *mp;
                if ((file->flags & ITEM_FLAG_MOUNTED) &&
                        (mp = g_hash_table_lookup(mtab_mounts, path)))
                        return g_strconcat("Mount point for ", mp->name, NULL);

                return g_strdup("Mount point");
        }

        return g_strdup("-");
}

#define LABEL(text, row)                                                \
        label = gtk_label_new(text ":");                                \
        gtk_misc_set_alignment(GTK_MISC(label), 1, .5);                 \
        gtk_label_set_justify(GTK_LABEL(label), GTK_JUSTIFY_RIGHT);     \
        gtk_table_attach_defaults(GTK_TABLE(table), label, 0, 1, row, row + 1);

#define VALUE(label, row)                                               \
        gtk_misc_set_alignment(GTK_MISC(label), 0, .5);                 \
        gtk_table_attach_defaults(GTK_TABLE(table), label, 1, 2, row, row + 1);

static void show_file_info(gpointer data, guint action, GtkWidget *widget)
{
        GtkWidget       *window, *table, *label, *button, *frame, *value;
        GtkWidget       *file_label;
        GString         *gstring;
        int             file_data[2];
        guchar          *path, *tmp;
        char            *argv[] = {"file", "-b", NULL, NULL};
        Collection      *collection;
        DirItem         *file;
        struct stat     info;
        FileStatus      *fs = NULL;
        guint           perm;
        
        g_return_if_fail(window_with_focus != NULL);

        collection = window_with_focus->collection;
        if (collection->number_selected > 1)
        {
                report_error("ROX-Filer", "You cannot do this to more than "
                                "one item at a time");
                return;
        }
        else if (collection->number_selected != 1)
        {
                collection_target(collection, target_callback, show_file_info);
                return;
        }
        file = selected_item(collection);
        path = make_path(window_with_focus->path,
                        file->leafname)->str;
        if (lstat(path, &info))
        {
                delayed_error("ROX-Filer", g_strerror(errno));
                return;
        }
        
        gstring = g_string_new(NULL);

        window = gtk_window_new(GTK_WINDOW_DIALOG);
        gtk_window_set_position(GTK_WINDOW(window), GTK_WIN_POS_MOUSE);
        gtk_container_set_border_width(GTK_CONTAINER(window), 4);
        gtk_window_set_title(GTK_WINDOW(window), path);

        table = gtk_table_new(10, 2, FALSE);
        gtk_container_add(GTK_CONTAINER(window), table);
        gtk_table_set_row_spacings(GTK_TABLE(table), 8);
        gtk_table_set_col_spacings(GTK_TABLE(table), 4);
        
        value = gtk_label_new(file->leafname);
        LABEL("Name", 0);
        VALUE(value, 0);

        g_string_sprintf(gstring, "%s, %s", user_name(info.st_uid),
                                            group_name(info.st_gid));
        value = gtk_label_new(gstring->str);
        LABEL("Owner, Group", 1);
        VALUE(value, 1);
        
        if (info.st_size >= PRETTY_SIZE_LIMIT)
        {
                g_string_sprintf(gstring, "%s (%ld bytes)",
                                format_size((unsigned long) info.st_size),
                                (unsigned long) info.st_size);
        }
        else
        {
                g_string_sprintf(gstring, "%ld byte%s",
                                (unsigned long) info.st_size,
                                info.st_size == 1 ? "" : "s");
        }
        value = gtk_label_new(gstring->str);
        LABEL("Size", 2);
        VALUE(value, 2);
        
        value = gtk_label_new(pretty_time(&info.st_ctime));
        LABEL("Change time", 3);
        VALUE(value, 3);
        
        value = gtk_label_new(pretty_time(&info.st_mtime));
        LABEL("Modify time", 4);
        VALUE(value, 4);
        
        value = gtk_label_new(pretty_time(&info.st_atime));
        LABEL("Access time", 5);
        VALUE(value, 5);
        
        value = gtk_label_new(pretty_permissions(info.st_mode));
        perm = applicable(info.st_uid, info.st_gid);
        gtk_label_set_pattern(GTK_LABEL(value),
                        perm == 0 ? "___        " :
                        perm == 1 ? "    ___    " :
                                    "        ___");
        gtk_widget_set_style(value, fixed_style);
        LABEL("Permissions", 6);
        VALUE(value, 6);
        
        tmp = pretty_type(file, path);
        value = gtk_label_new(tmp);
        g_free(tmp);
        LABEL("Type", 7);
        VALUE(value, 7);

        frame = gtk_frame_new("file(1) says...");
        gtk_table_attach_defaults(GTK_TABLE(table), frame, 0, 2, 8, 9);
        file_label = gtk_label_new("<nothing yet>");
        gtk_misc_set_padding(GTK_MISC(file_label), 4, 4);
        gtk_label_set_line_wrap(GTK_LABEL(file_label), TRUE);
        gtk_container_add(GTK_CONTAINER(frame), file_label);
        
        button = gtk_button_new_with_label("OK");
        gtk_window_set_focus(GTK_WINDOW(window), button);
        gtk_table_attach(GTK_TABLE(table), button, 0, 2, 10, 11,
                        GTK_EXPAND | GTK_FILL | GTK_SHRINK, 0, 40, 4);
        gtk_signal_connect_object(GTK_OBJECT(button), "clicked",
                        gtk_widget_destroy, GTK_OBJECT(window));

        gtk_widget_show_all(window);
        gdk_flush();

        if (pipe(file_data))
        {
                g_string_sprintf(gstring, "pipe(): %s", g_strerror(errno));
                g_string_free(gstring, TRUE);
                return;
        }
        switch (fork())
        {
                case -1:
                        g_string_sprintf(gstring, "fork(): %s",
                                        g_strerror(errno));
                        gtk_label_set_text(GTK_LABEL(file_label), gstring->str);
                        g_string_free(gstring, TRUE);
                        close(file_data[0]);
                        close(file_data[1]);
                        break;
                case 0:
                        /* We are the child */
                        close(file_data[0]);
                        dup2(file_data[1], STDOUT_FILENO);
                        dup2(file_data[1], STDERR_FILENO);
#ifdef FILE_B_FLAG
                        argv[2] = path;
#else
                        argv[1] = file->leafname;
                        chdir(window_with_focus->path);
#endif
                        if (execvp(argv[0], argv))
                                fprintf(stderr, "execvp() error: %s\n",
                                                g_strerror(errno));
                        _exit(0);
                default:
                        /* We are the parent */
                        close(file_data[1]);
                        fs = g_new(FileStatus, 1);
                        fs->label = GTK_LABEL(file_label);
                        fs->fd = file_data[0];
                        fs->start = TRUE;
                        fs->input = gdk_input_add(fs->fd, GDK_INPUT_READ,
                                (GdkInputFunction) add_file_output, fs);
                        gtk_signal_connect(GTK_OBJECT(window), "destroy",
                                GTK_SIGNAL_FUNC(file_info_destroyed), fs);
                        g_string_free(gstring, TRUE);
                        break;
        }
}

static void app_show_help(char *path)
{
        char            *help_dir;
        struct stat     info;

        help_dir = g_strconcat(path, "/Help", NULL);
        
        if (mc_stat(help_dir, &info))
                delayed_error("Application",
                        "This is an application directory - you can "
                        "run it as a program, or open it (hold down "
                        "Shift while you open it). Most applications provide "
                        "their own help here, but this one doesn't.");
        else
                filer_opendir(help_dir, PANEL_NO);
}

static void help(gpointer data, guint action, GtkWidget *widget)
{
        Collection      *collection;
        DirItem *item;
        
        g_return_if_fail(window_with_focus != NULL);

        collection = window_with_focus->collection;
        if (collection->number_selected > 1)
        {
                report_error("ROX-Filer", "You cannot do this to more than "
                                "one item at a time");
                return;
        }
        else if (collection->number_selected != 1)
        {
                collection_target(collection, target_callback, help);
                return;
        }
        item = selected_item(collection);
        switch (item->base_type)
        {
                case TYPE_FILE:
                        if (item->flags & ITEM_FLAG_EXEC_FILE)
                                delayed_error("Executable file",
                                        "This is a file with an eXecute bit "
                                        "set - it can be run as a program.");
                        else
                                delayed_error("File",
                                        "This is a data file. Try using the "
                                        "Info menu item to find out more...");
                        break;
                case TYPE_DIRECTORY:
                        if (item->flags & ITEM_FLAG_APPDIR)
                                app_show_help(
                                        make_path(window_with_focus->path,
                                          item->leafname)->str);
                        else if (item->flags & ITEM_FLAG_MOUNT_POINT)
                                delayed_error("Mount point",
                                "A mount point is a directory which another "
                                "filing system can be mounted on. Everything "
                                "on the mounted filesystem then appears to be "
                                "inside the directory.");
                        else
                                delayed_error("Directory",
                                "This is a directory. It contains an index to "
                                "other items - open it to see the list.");
                        break;
                case TYPE_CHAR_DEVICE:
                case TYPE_BLOCK_DEVICE:
                        delayed_error("Device file",
                                "Device files allow you to read from or write "
                                "to a device driver as though it was an "
                                "ordinary file.");
                        break;
                case TYPE_PIPE:
                        delayed_error("Named pipe",
                                "Pipes allow different programs to "
                                "communicate. One program writes data to the "
                                "pipe while another one reads it out again.");
                        break;
                case TYPE_SOCKET:
                        delayed_error("Socket",
                                "Sockets allow processes to communicate.");
                        break;
                default:
                        delayed_error("Unknown type", 
                                "I couldn't find out what kind of file this "
                                "is. Maybe it doesn't exist anymore or you "
                                "don't have search permission on the directory "
                                "it's in?");
                        break;
        }
}

#define OPEN_VFS(fs)            \
static void open_vfs_ ## fs (gpointer data, guint action, GtkWidget *widget) \
{                                                       \
        Collection      *collection;                    \
                                                        \
        g_return_if_fail(window_with_focus != NULL);    \
                                                        \
        collection = window_with_focus->collection;     \
        if (collection->number_selected < 1)                    \
                collection_target(collection, target_callback,  \
                                                open_vfs_ ## fs);       \
        else                                                            \
                real_vfs_open(#fs);                     \
}

static void real_vfs_open(char *fs)
{
        gchar           *path;
        DirItem         *item;

        if (window_with_focus->collection->number_selected != 1)
        {
                report_error("ROX-Filer", "You must select a single file "
                                "to open as a Virtual File System");
                return;
        }

        item = selected_item(window_with_focus->collection);

        path = g_strconcat(window_with_focus->path,
                        "/",
                        item->leafname,
                        "#", fs, NULL);

        filer_change_to(window_with_focus, path, NULL);
        g_free(path);
}

OPEN_VFS(rpm)
OPEN_VFS(utar)
OPEN_VFS(uzip)

static void select_all(gpointer data, guint action, GtkWidget *widget)
{
        g_return_if_fail(window_with_focus != NULL);

        collection_select_all(window_with_focus->collection);
        window_with_focus->temp_item_selected = FALSE;
}

static void clear_selection(gpointer data, guint action, GtkWidget *widget)
{
        g_return_if_fail(window_with_focus != NULL);

        collection_clear_selection(window_with_focus->collection);
        window_with_focus->temp_item_selected = FALSE;
}

static void show_options(gpointer data, guint action, GtkWidget *widget)
{
        g_return_if_fail(window_with_focus != NULL);

        options_show(window_with_focus);
}

static gboolean new_directory_cb(guchar *initial, guchar *path)
{
        if (mkdir(path, S_IRWXU | S_IRWXG | S_IRWXO))
        {
                report_error("mkdir", g_strerror(errno));
                return FALSE;
        }
        return TRUE;
}

static void new_directory(gpointer data, guint action, GtkWidget *widget)
{
        g_return_if_fail(window_with_focus != NULL);

        savebox_show("New Directory",
                        make_path(window_with_focus->path, "NewDir")->str,
                        default_pixmap + TYPE_DIRECTORY,
                        new_directory_cb);
}

static void xterm_here(gpointer data, guint action, GtkWidget *widget)
{
        char    *argv[] = {NULL, NULL};

        argv[0] = xterm_here_value;

        g_return_if_fail(window_with_focus != NULL);

        if (!spawn_full(argv, window_with_focus->path))
                report_error("ROX-Filer", "Failed to fork() child "
                                        "process");
}

static void open_parent(gpointer data, guint action, GtkWidget *widget)
{
        char    *copy;
        char    *slash;

        g_return_if_fail(window_with_focus != NULL);

        if (window_with_focus->path[0] == '/'
                        && window_with_focus->path[1] == '\0')
                return;         /* Already in the root */
        
        copy = g_strdup(window_with_focus->path);
        slash = strrchr(copy, '/');

        if (slash)
        {
                *slash = '\0';
                filer_opendir(*copy ? copy : "/", PANEL_NO);
        }
        else
                g_warning("No / in directory path!\n");

        g_free(copy);
}

static void open_parent_same(gpointer data, guint action, GtkWidget *widget)
{
        g_return_if_fail(window_with_focus != NULL);

        change_to_parent(window_with_focus);
}

static void new_window(gpointer data, guint action, GtkWidget *widget)
{
        g_return_if_fail(window_with_focus != NULL);

        if (o_unique_filer_windows)
                report_error("ROX-Filer", "You can't open a second view onto "
                        "this directory because the `Unique Windows' option "
                        "is turned on in the Options window.");
        else
                filer_opendir(window_with_focus->path, PANEL_NO);
}

static void close_window(gpointer data, guint action, GtkWidget *widget)
{
        g_return_if_fail(window_with_focus != NULL);

        gtk_widget_destroy(window_with_focus->window);
}

static void enter_path(gpointer data, guint action, GtkWidget *widget)
{
        g_return_if_fail(window_with_focus != NULL);

        minibuffer_show(window_with_focus);
}

static void rox_help(gpointer data, guint action, GtkWidget *widget)
{
        g_return_if_fail(window_with_focus != NULL);
        
        filer_opendir(make_path(getenv("APP_DIR"), "Help")->str, PANEL_NO);
}

static void open_as_dir(gpointer data, guint action, GtkWidget *widget)
{
        g_return_if_fail(window_with_focus != NULL);
        
        filer_opendir(window_with_focus->path, PANEL_NO);
}

static void close_panel(gpointer data, guint action, GtkWidget *widget)
{
        g_return_if_fail(window_with_focus != NULL);
        
        gtk_widget_destroy(window_with_focus->window);
}