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/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/* e-shortcuts-view.c
 *
 * Copyright (C) 2000, 2001 Ximian, Inc.
 *
 * 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.
 *
 * Author: Ettore Perazzoli
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <glib.h>
#include <gtk/gtkcheckmenuitem.h>
#include <gtk/gtkentry.h>
#include <gtk/gtklabel.h>
#include <libgnome/gnome-defs.h>
#include <libgnome/gnome-i18n.h>
#include <libgnomeui/gnome-app.h>
#include <libgnomeui/gnome-app-helper.h>
#include <libgnomeui/gnome-dialog.h>
#include <libgnomeui/gnome-messagebox.h>
#include <libgnomeui/gnome-popup-menu.h>
#include <libgnomeui/gnome-stock.h>
#include <libgnomeui/gnome-uidefs.h>
#include <gal/util/e-util.h>

#include "e-shortcuts-view-model.h"

#include "e-shortcuts-view.h"


#define PARENT_TYPE E_TYPE_SHORTCUT_BAR
static EShortcutBarClass *parent_class = NULL;

struct _EShortcutsViewPrivate {
    EShortcuts *shortcuts;
};

enum {
    ACTIVATE_SHORTCUT,
    HIDE_REQUESTED,
    LAST_SIGNAL
};

static guint signals[LAST_SIGNAL] = { 0 };


/* FIXME this should all be in the model.  */

static const char *
get_storage_set_path_from_uri (const char *uri)
{
    const char *colon;

    if (g_path_is_absolute (uri))
        return NULL;

    colon = strchr (uri, ':');
    if (colon == NULL || colon == uri || colon[1] == '\0')
        return NULL;

    if (! g_path_is_absolute (colon + 1))
        return NULL;

    if (g_strncasecmp (uri, "evolution", colon - uri) != 0)
        return NULL;

    return colon + 1;
}

/* Icon callback for the shortcut bar.  */
static GdkPixbuf *
icon_callback (EShortcutBar *shortcut_bar,
           const char *uri,
           gpointer data)
{
    EFolderTypeRegistry *folder_type_registry;
    EShortcuts *shortcuts;
    EStorageSet *storage_set;
    EFolder *folder;
    GdkPixbuf *pixbuf;
    const char *type;

    shortcuts = E_SHORTCUTS (data);

    storage_set = e_shortcuts_get_storage_set (shortcuts);
    folder_type_registry = e_storage_set_get_folder_type_registry (storage_set);

    folder = e_storage_set_get_folder (storage_set,
                       get_storage_set_path_from_uri (uri));

    if (folder == NULL)
        return NULL;

    type = e_folder_get_type_string (folder);
    if (type == NULL)
        return NULL;

    /* FIXME mini icons?  */
    pixbuf = e_folder_type_registry_get_icon_for_type (folder_type_registry, type, FALSE);
    if (pixbuf != NULL)
        gdk_pixbuf_ref (pixbuf);

    return pixbuf;
}


static void
show_new_group_dialog (EShortcutsView *view)
{
    GtkWidget *dialog;
    GtkWidget *label;
    GtkWidget *entry;
    GtkWidget *box;
    const char *group_name;
    int button_num;

    dialog = gnome_dialog_new (_("Create new shortcut group"),
                   GNOME_STOCK_BUTTON_OK, GNOME_STOCK_BUTTON_CANCEL, NULL);

    label = gtk_label_new (_("Group name:"));
    gtk_widget_show (label);

    entry = gtk_entry_new ();
    gtk_widget_show (entry);

    box = gtk_hbox_new (FALSE, GNOME_PAD_SMALL);
    gtk_widget_show (box);

    gtk_box_pack_start (GTK_BOX (box), label, FALSE, TRUE, 0);
    gtk_box_pack_start (GTK_BOX (box), entry, TRUE, TRUE, 0);

    gtk_box_pack_start (GTK_BOX (GNOME_DIALOG (dialog)->vbox), box, FALSE, TRUE, 0);

    gnome_dialog_set_parent (GNOME_DIALOG (dialog), GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (view))));
    gnome_dialog_set_default (GNOME_DIALOG (dialog), 0);

    gtk_widget_grab_focus (entry);
    gnome_dialog_editable_enters (GNOME_DIALOG (dialog), GTK_EDITABLE (entry));

    gtk_widget_show (dialog);

    button_num = gnome_dialog_run (GNOME_DIALOG (dialog));
    if (button_num == -1)
        return;
    if (button_num != 0) {
        gtk_widget_destroy (dialog);
        return;
    }

    group_name = gtk_entry_get_text (GTK_ENTRY (entry));
    e_shortcuts_add_group (view->priv->shortcuts, -1, group_name);

    gtk_widget_destroy (dialog);
}


/* Shortcut bar right-click menu.  */

struct _RightClickMenuData {
    EShortcutsView *shortcuts_view;
    int group_num;
};
typedef struct _RightClickMenuData RightClickMenuData;

static void
toggle_large_icons_cb (GtkWidget *widget,
               void *data)
{
    RightClickMenuData *menu_data;

    menu_data = (RightClickMenuData *) data;

    if (menu_data == NULL)
        return;

    if (! GTK_CHECK_MENU_ITEM (widget)->active)
        return;

    e_shortcut_bar_set_view_type (E_SHORTCUT_BAR (menu_data->shortcuts_view),
                      menu_data->group_num,
                      E_ICON_BAR_LARGE_ICONS);
}

static void
toggle_small_icons_cb (GtkWidget *widget,
               void *data)
{
    RightClickMenuData *menu_data;

    menu_data = (RightClickMenuData *) data;
    if (menu_data == NULL)
        return;

    if (! GTK_CHECK_MENU_ITEM (widget)->active)
        return;

    e_shortcut_bar_set_view_type (E_SHORTCUT_BAR (menu_data->shortcuts_view),
                      menu_data->group_num,
                      E_ICON_BAR_SMALL_ICONS);
}

static void
hide_shortcut_bar_cb (GtkWidget *widget,
              void *data)
{
    RightClickMenuData *menu_data;
    EShortcutsView *shortcut_view;

    menu_data = (RightClickMenuData *) data;

    shortcut_view = E_SHORTCUTS_VIEW (menu_data->shortcuts_view);

    gtk_signal_emit (GTK_OBJECT (shortcut_view), signals[HIDE_REQUESTED]);
}

static void
create_new_group_cb (GtkWidget *widget,
             void *data)
{
    RightClickMenuData *menu_data;

    menu_data = (RightClickMenuData *) data;

    show_new_group_dialog (menu_data->shortcuts_view);
}

static void
destroy_group_cb (GtkWidget *widget,
          void *data)
{
    RightClickMenuData *menu_data;
    EShortcuts *shortcuts;
    EShortcutsView *shortcuts_view;
    EShortcutsViewPrivate *priv;
    GtkWidget *message_box;
    char *question;

    menu_data = (RightClickMenuData *) data;
    shortcuts_view = menu_data->shortcuts_view;
    priv = shortcuts_view->priv;
    shortcuts = priv->shortcuts;

    question = g_strdup_printf (_("Do you really want to remove group\n"
                      "`%s' from the shortcut bar?"),
                    e_shortcuts_get_group_title (shortcuts, menu_data->group_num));

    message_box = gnome_message_box_new (question, GNOME_MESSAGE_BOX_QUESTION,
                         _("Remove"), _("Don't remove"), NULL);
    gnome_dialog_set_parent (GNOME_DIALOG (message_box),
                 GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (shortcuts_view))));

    if (gnome_dialog_run_and_close (GNOME_DIALOG (message_box)) != 0)
        return;

    e_shortcuts_remove_group (shortcuts, menu_data->group_num);
}

static GnomeUIInfo icon_size_radio_group_uiinfo[] = {
    { GNOME_APP_UI_ITEM, N_("_Small Icons"),
      N_("Show the shortcuts as small icons"), toggle_small_icons_cb, NULL,
      NULL, 0, 0, 0, 0 },
    { GNOME_APP_UI_ITEM, N_("_Large Icons"),
      N_("Show the shortcuts as large icons"), toggle_large_icons_cb, NULL,
      NULL, 0, 0, 0, 0 },

    GNOMEUIINFO_END
};

static GnomeUIInfo right_click_menu_uiinfo[] = {
    GNOMEUIINFO_RADIOLIST (icon_size_radio_group_uiinfo),

    GNOMEUIINFO_SEPARATOR,

    { GNOME_APP_UI_ITEM, N_("_New Group..."),
      N_("Create a new shortcut group"), create_new_group_cb, NULL,
      NULL, 0, 0, 0, 0 },
    { GNOME_APP_UI_ITEM, N_("_Remove This Group..."),
      N_("Remove this shortcut group"), destroy_group_cb, NULL,
      NULL, 0, 0, 0, 0 },

    GNOMEUIINFO_SEPARATOR,

    { GNOME_APP_UI_ITEM, N_("_Hide the Shortcut Bar"), 
      N_("Hide the shortcut bar"), hide_shortcut_bar_cb, NULL,
      NULL, 0, 0, 0, 0 },

    GNOMEUIINFO_END
};

static void
pop_up_right_click_menu_for_group (EShortcutsView *shortcuts_view,
                   GdkEventButton *event,
                   int group_num)
{
    RightClickMenuData *menu_data;
    GtkWidget *popup_menu;

    menu_data = g_new (RightClickMenuData, 1);
    menu_data->shortcuts_view = shortcuts_view;
    menu_data->group_num      = group_num;

    popup_menu = gnome_popup_menu_new (right_click_menu_uiinfo);

    if (e_shortcut_bar_get_view_type (E_SHORTCUT_BAR (shortcuts_view), group_num)
        == E_ICON_BAR_SMALL_ICONS)
        gtk_check_menu_item_set_active (GTK_CHECK_MENU_ITEM (icon_size_radio_group_uiinfo[0].widget),
                        TRUE);
    else
        gtk_check_menu_item_set_active (GTK_CHECK_MENU_ITEM (icon_size_radio_group_uiinfo[1].widget),
                        TRUE);

    if (group_num == 0)
        gtk_widget_set_sensitive (right_click_menu_uiinfo[3].widget, FALSE);

    gnome_popup_menu_do_popup_modal (popup_menu, NULL, NULL, event, menu_data);

    g_free (menu_data);
    gtk_widget_destroy (popup_menu);
}


/* Shortcut right-click menu.  */

struct _ShortcutRightClickMenuData {
    EShortcutsView *shortcuts_view;
    int group_num;
    int item_num;
};
typedef struct _ShortcutRightClickMenuData ShortcutRightClickMenuData;

static void
activate_shortcut_cb (GtkWidget *widget,
              void *data)
{
    ShortcutRightClickMenuData *menu_data;
    EShortcutsView *shortcuts_view;
    EShortcuts *shortcuts;
    const EShortcutItem *shortcut_item;

    menu_data = (ShortcutRightClickMenuData *) data;
    shortcuts_view = menu_data->shortcuts_view;
    shortcuts = shortcuts_view->priv->shortcuts;

    shortcut_item = e_shortcuts_get_shortcut (shortcuts, menu_data->group_num, menu_data->item_num);
    if (shortcut_item == NULL)
        return;

    gtk_signal_emit (GTK_OBJECT (shortcuts_view), signals[ACTIVATE_SHORTCUT],
             shortcuts, shortcut_item->uri);
}

static void
remove_shortcut_cb (GtkWidget *widget,
            void *data)
{
    ShortcutRightClickMenuData *menu_data;
    EShortcutsView *shortcuts_view;
    EShortcuts *shortcuts;

    menu_data = (ShortcutRightClickMenuData *) data;
    shortcuts_view = menu_data->shortcuts_view;
    shortcuts = shortcuts_view->priv->shortcuts;

    e_shortcuts_remove_shortcut (shortcuts, menu_data->group_num, menu_data->item_num);
}

static GnomeUIInfo shortcut_right_click_menu_uiinfo[] = {
    GNOMEUIINFO_ITEM       (N_("Activate"), N_("Activate this shortcut"),
                activate_shortcut_cb, NULL),
    GNOMEUIINFO_SEPARATOR,
    GNOMEUIINFO_ITEM_STOCK (N_("Remove"), N_("Remove this shortcut from the shortcut bar"),
                remove_shortcut_cb, GNOME_STOCK_MENU_CLOSE),
    GNOMEUIINFO_END
};

static void
pop_up_right_click_menu_for_shortcut (EShortcutsView *shortcuts_view,
                      GdkEventButton *event,
                      int group_num,
                      int item_num)
{
    ShortcutRightClickMenuData *menu_data;
    GtkWidget *popup_menu;

    menu_data = g_new (ShortcutRightClickMenuData, 1);
    menu_data->shortcuts_view = shortcuts_view;
    menu_data->group_num      = group_num;
    menu_data->item_num       = item_num;

    popup_menu = gnome_popup_menu_new (shortcut_right_click_menu_uiinfo);

    gnome_popup_menu_do_popup_modal (popup_menu, NULL, NULL, event, menu_data);

    g_free (menu_data);
    gtk_widget_destroy (popup_menu);
}


/* GtkObject methods.  */

static void
destroy (GtkObject *object)
{
    EShortcutsViewPrivate *priv;
    EShortcutsView *shortcuts_view;

    shortcuts_view = E_SHORTCUTS_VIEW (object);

    priv = shortcuts_view->priv;

    gtk_object_unref (GTK_OBJECT (priv->shortcuts));

    g_free (priv);

    (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
}


/* EShortcutBar methods.  */

static void
item_selected (EShortcutBar *shortcut_bar,
           GdkEvent *event,
           int group_num,
           int item_num)
{
    EShortcuts *shortcuts;
    EShortcutsView *shortcuts_view;
    const EShortcutItem *shortcut_item;

    shortcuts_view = E_SHORTCUTS_VIEW (shortcut_bar);
    shortcuts = shortcuts_view->priv->shortcuts;

    if (event->button.button == 3) {
        if (item_num < 0)
            pop_up_right_click_menu_for_group (shortcuts_view, &event->button,
                               group_num);
        else
            pop_up_right_click_menu_for_shortcut (shortcuts_view, &event->button,
                                  group_num, item_num);
        return;
    } else if (event->button.button != 1) {
        return;
    }

    if (item_num < 0)
        return;

    shortcut_item = e_shortcuts_get_shortcut (shortcuts, group_num, item_num);
    if (shortcut_item == NULL)
        return;

    gtk_signal_emit (GTK_OBJECT (shortcuts_view), signals[ACTIVATE_SHORTCUT],
             shortcuts, shortcut_item->uri);
}

static void
impl_shortcut_dropped (EShortcutBar *shortcut_bar,
               int group_num,
               int position,
               const char *item_url,
               const char *item_name)
{
    EShortcutsView *shortcuts_view;
    EShortcutsViewPrivate *priv;

    shortcuts_view = E_SHORTCUTS_VIEW (shortcut_bar);
    priv = shortcuts_view->priv;

    e_shortcuts_add_shortcut (priv->shortcuts, group_num, position, item_url, NULL, NULL);
}

static void
impl_shortcut_dragged (EShortcutBar *shortcut_bar,
               gint group_num,
               gint item_num)
{
    EShortcutsView *shortcuts_view;
    EShortcutsViewPrivate *priv;

    shortcuts_view = E_SHORTCUTS_VIEW (shortcut_bar);
    priv = shortcuts_view->priv;

    e_shortcuts_remove_shortcut (priv->shortcuts, group_num, item_num);
}


static void
class_init (EShortcutsViewClass *klass)
{
    GtkObjectClass *object_class;
    EShortcutBarClass *shortcut_bar_class;

    object_class = GTK_OBJECT_CLASS (klass);
    object_class->destroy = destroy;

    shortcut_bar_class = E_SHORTCUT_BAR_CLASS (klass);
    shortcut_bar_class->item_selected    = item_selected;
    shortcut_bar_class->shortcut_dropped = impl_shortcut_dropped;
    shortcut_bar_class->shortcut_dragged = impl_shortcut_dragged;

    parent_class = gtk_type_class (e_shortcut_bar_get_type ());

    signals[ACTIVATE_SHORTCUT] =
        gtk_signal_new ("activate_shortcut",
                GTK_RUN_LAST | GTK_RUN_ACTION,
                object_class->type,
                GTK_SIGNAL_OFFSET (EShortcutsViewClass, activate_shortcut),
                gtk_marshal_NONE__POINTER_POINTER,
                GTK_TYPE_NONE, 2,
                GTK_TYPE_POINTER,
                GTK_TYPE_STRING);

    signals[HIDE_REQUESTED] =
        gtk_signal_new ("hide_requested",
                GTK_RUN_LAST,
                object_class->type,
                GTK_SIGNAL_OFFSET (EShortcutsViewClass,
                           hide_requested),
                gtk_marshal_NONE__NONE,
                GTK_TYPE_NONE, 0);

    gtk_object_class_add_signals (object_class, signals, LAST_SIGNAL);
}

static void
init (EShortcutsView *shortcuts_view)
{
    EShortcutsViewPrivate *priv;

    priv = g_new (EShortcutsViewPrivate, 1);
    priv->shortcuts = NULL;

    shortcuts_view->priv = priv;
}


void
e_shortcuts_view_construct (EShortcutsView *shortcuts_view,
                EShortcuts *shortcuts)
{
    EShortcutsViewPrivate *priv;

    g_return_if_fail (shortcuts != NULL);
    g_return_if_fail (E_IS_SHORTCUTS (shortcuts));

    priv = shortcuts_view->priv;

    priv->shortcuts = shortcuts;
    gtk_object_ref (GTK_OBJECT (priv->shortcuts));

    e_shortcut_bar_set_icon_callback (E_SHORTCUT_BAR (shortcuts_view), icon_callback,
                      shortcuts);

    e_shortcut_bar_set_model (E_SHORTCUT_BAR (shortcuts_view),
                  E_SHORTCUT_MODEL (e_shortcuts_view_model_new (shortcuts)));
}

GtkWidget *
e_shortcuts_view_new (EShortcuts *shortcuts)
{
    GtkWidget *new;

    g_return_val_if_fail (shortcuts != NULL, NULL);
    g_return_val_if_fail (E_IS_SHORTCUTS (shortcuts), NULL);

    new = gtk_type_new (e_shortcuts_view_get_type ());
    e_shortcuts_view_construct (E_SHORTCUTS_VIEW (new), shortcuts);

    return new;
}


E_MAKE_TYPE (e_shortcuts_view, "EShortcutsView", EShortcutsView, class_init, init, PARENT_TYPE)