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/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/* e-shortcuts-view-model.c
 *
 * Copyright (C) 2000  Helix Code, 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
 */

/* FIXME.  This really sucks.  We are using the model/view approach in the
   dumbest possible way.  */

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

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

#include <glib.h>
#include <gtk/gtksignal.h>
#include <gal/util/e-util.h>


#define PARENT_TYPE e_shortcut_model_get_type ()
static EShortcutModelClass *parent_class = NULL;

struct _EShortcutsViewModelPrivate {
    EShortcuts *shortcuts;
};


/* View initialization.  */

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;
}

static void
load_group_into_model (EShortcutsViewModel *shortcuts_view_model,
               const char *group_title,
               int group_num)
{
    EShortcutsViewModelPrivate *priv;
    EStorageSet *storage_set;
    GList *shortcut_list;
    GList *p;

    priv = shortcuts_view_model->priv;

    storage_set = e_shortcuts_get_storage_set (priv->shortcuts);
    g_assert (storage_set != NULL);

    shortcut_list = e_shortcuts_get_shortcuts_in_group (priv->shortcuts, group_title);
    if (shortcut_list == NULL)
        return;

    for (p = shortcut_list; p != NULL; p = p->next) {
        EFolder *folder = NULL;
        const char *path;
        const char *uri;
        const char *name;

        uri = (const char *) p->data;
        path = get_storage_set_path_from_uri (uri);
        if (path != NULL)
            folder = e_storage_set_get_folder (storage_set, path);

        if (path == NULL || folder == NULL) {
            /* FIXME */
            g_warning ("Invalid link while loading shortcut bar view -- %s\n",
                   uri);
            continue;
        }

        name = e_folder_get_name (folder);
        e_shortcut_model_add_item (E_SHORTCUT_MODEL (shortcuts_view_model), group_num, -1, uri, name);
    }

    e_free_string_list (shortcut_list);
}

static void
load_all_shortcuts_into_model (EShortcutsViewModel *shortcuts_view_model)
{
    EShortcutsViewModelPrivate *priv;
    GList *group_titles;
    GList *p;
    int group_num;

    priv = shortcuts_view_model->priv;

    group_titles = e_shortcuts_get_group_titles (priv->shortcuts);

    for (p = group_titles; p != NULL; p = p->next) {
        const char *group_title;

        group_title = (const char *) p->data;
        group_num = e_shortcut_model_add_group (E_SHORTCUT_MODEL (shortcuts_view_model), -1, group_title);

        load_group_into_model (shortcuts_view_model, group_title, group_num);
    }

    e_free_string_list (group_titles);
}


/* EShortcuts callbacks.  */

static void
shortcuts_new_group_cb (EShortcuts *shortcuts,
            int group_num,
            void *data)
{
    EShortcutsViewModel *shortcuts_view_model;
    EShortcutsViewModelPrivate *priv;
    const char *title;

    shortcuts_view_model = E_SHORTCUTS_VIEW_MODEL (data);
    priv = shortcuts_view_model->priv;

    title = e_shortcuts_get_group_title (priv->shortcuts, group_num);
    e_shortcut_model_add_group (E_SHORTCUT_MODEL (shortcuts_view_model), group_num, title);
}

static void
shortcuts_remove_group_cb (EShortcuts *shortcuts,
               int group_num,
               void *data)
{
    EShortcutsViewModel *shortcuts_view_model;

    shortcuts_view_model = E_SHORTCUTS_VIEW_MODEL (data);
    e_shortcut_model_remove_group (E_SHORTCUT_MODEL (shortcuts_view_model), group_num);
}

static void
shortcuts_new_shortcut_cb (EShortcuts *shortcuts,
               int group_num,
               int item_num,
               void *data)
{
    EShortcutsViewModel *shortcuts_view_model;
    EShortcutsViewModelPrivate *priv;
    EStorageSet *storage_set;
    EFolder *folder;
    const char *uri;
    const char *storage_set_path;
    const char *folder_name;

    shortcuts_view_model = E_SHORTCUTS_VIEW_MODEL (data);
    priv = shortcuts_view_model->priv;

    uri = e_shortcuts_get_uri (priv->shortcuts, group_num, item_num);
    g_assert (uri != NULL);

    storage_set_path = get_storage_set_path_from_uri (uri);
    if (storage_set_path == NULL)
        return;

    storage_set = e_shortcuts_get_storage_set (priv->shortcuts);
    folder = e_storage_set_get_folder (storage_set, storage_set_path);
    folder_name = e_folder_get_name (folder);

    e_shortcut_model_add_item (E_SHORTCUT_MODEL (shortcuts_view_model),
                   group_num, item_num, uri, folder_name);
}

static void
shortcuts_remove_shortcut_cb (EShortcuts *shortcuts,
                  int group_num,
                  int item_num,
                  void *data)
{
    EShortcutsViewModel *shortcuts_view_model;

    shortcuts_view_model = E_SHORTCUTS_VIEW_MODEL (data);
    e_shortcut_model_remove_item (E_SHORTCUT_MODEL (shortcuts_view_model), group_num, item_num);
}


/* GtkObject methods.  */

static void
impl_destroy (GtkObject *object)
{
    EShortcutsViewModel *view_model;
    EShortcutsViewModelPrivate *priv;

    view_model = E_SHORTCUTS_VIEW_MODEL (object);
    priv = view_model->priv;

    g_free (priv);
}


static void
class_init (EShortcutsViewModelClass *klass)
{
    GtkObjectClass *object_class;

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

    parent_class = gtk_type_class (e_shortcut_model_get_type ());
}

static void
init (EShortcutsViewModel *shortcuts_view_model)
{
    EShortcutsViewModelPrivate *priv;

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

    shortcuts_view_model->priv = priv;
}


void
e_shortcuts_view_model_construct (EShortcutsViewModel *model,
                  EShortcuts *shortcuts)
{
    EShortcutsViewModelPrivate *priv;

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

    priv = model->priv;
    g_return_if_fail (priv->shortcuts == NULL);

    priv->shortcuts = shortcuts;

    load_all_shortcuts_into_model (model);

    gtk_signal_connect_while_alive (GTK_OBJECT (priv->shortcuts),
                    "new_group", GTK_SIGNAL_FUNC (shortcuts_new_group_cb), model,
                    GTK_OBJECT (model));
    gtk_signal_connect_while_alive (GTK_OBJECT (priv->shortcuts),
                    "remove_group", GTK_SIGNAL_FUNC (shortcuts_remove_group_cb), model,
                    GTK_OBJECT (model));
    gtk_signal_connect_while_alive (GTK_OBJECT (priv->shortcuts),
                    "new_shortcut", GTK_SIGNAL_FUNC (shortcuts_new_shortcut_cb), model,
                    GTK_OBJECT (model));
    gtk_signal_connect_while_alive (GTK_OBJECT (priv->shortcuts),
                    "remove_shortcut", GTK_SIGNAL_FUNC (shortcuts_remove_shortcut_cb), model,
                    GTK_OBJECT (model));
}

EShortcutsViewModel *
e_shortcuts_view_model_new (EShortcuts *shortcuts)
{
    EShortcutsViewModel *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_model_get_type ());

    e_shortcuts_view_model_construct (new, shortcuts);

    return new;
}


E_MAKE_TYPE (e_shortcuts_view_model, "EShortcutsViewModel", EShortcutsViewModel, class_init, init, PARENT_TYPE)