path: root/calendar/gui/e-calendar-selector.c

/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/* e-calendar-selector.c
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of version 2 of the GNU General Public
 * License as published by the Free Software Foundation.
 *
 * 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., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */

#include "e-calendar-selector.h"

#include <libecal/e-cal.h>
#include "common/authentication.h"

#define E_CALENDAR_SELECTOR_GET_PRIVATE(obj) \
    (G_TYPE_INSTANCE_GET_PRIVATE \
    ((obj), E_TYPE_CALENDAR_SELECTOR, ECalendarSelectorPrivate))

struct _ECalendarSelectorPrivate {
    gint dummy_value;
};

enum {
    DND_TARGET_TYPE_CALENDAR_LIST
};

static GtkTargetEntry drag_types[] = {
    { "text/calendar", 0, DND_TARGET_TYPE_CALENDAR_LIST },
    { "text/x-calendar", 0, DND_TARGET_TYPE_CALENDAR_LIST }
};

static gpointer parent_class;

static gboolean
calendar_selector_update_single_object (ECal *client,
                                        icalcomponent *icalcomp)
{
    gchar *uid;
    icalcomponent *tmp_icalcomp;

    uid = (gchar *) icalcomponent_get_uid (icalcomp);

    if (e_cal_get_object (client, uid, NULL, &tmp_icalcomp, NULL))
        return e_cal_modify_object (
            client, icalcomp, CALOBJ_MOD_ALL, NULL);

    return e_cal_create_object (client, icalcomp, &uid, NULL);
}

static gboolean
calendar_selector_update_objects (ECal *client,
                                  icalcomponent *icalcomp)
{
    icalcomponent *subcomp;
    icalcomponent_kind kind;

    kind = icalcomponent_isa (icalcomp);
    if (kind == ICAL_VTODO_COMPONENT || kind == ICAL_VEVENT_COMPONENT)
        return calendar_selector_update_single_object (
            client, icalcomp);
    else if (kind != ICAL_VCALENDAR_COMPONENT)
        return FALSE;

    subcomp = icalcomponent_get_first_component (
        icalcomp, ICAL_ANY_COMPONENT);
    while (subcomp != NULL) {
        gboolean success;

        kind = icalcomponent_isa (subcomp);
        if (kind == ICAL_VTIMEZONE_COMPONENT) {
            icaltimezone *zone;

            zone = icaltimezone_new ();
            icaltimezone_set_component (zone, subcomp);

            success = e_cal_add_timezone (client, zone, NULL);
            icaltimezone_free (zone, 1);
            if (!success)
                return FALSE;
        } else if (kind == ICAL_VTODO_COMPONENT ||
            kind == ICAL_VEVENT_COMPONENT) {
            success = calendar_selector_update_single_object (
                client, subcomp);
            if (!success)
                return FALSE;
        }

        subcomp = icalcomponent_get_next_component (
            icalcomp, ICAL_ANY_COMPONENT);
    }

    return TRUE;
}

static void
calendar_selector_drag_leave (GtkWidget *widget,
                              GdkDragContext *context,
                              guint time_)
{
    /* XXX This is exactly the same as in EAddressbookSelector.
     *     Consider merging this callback into ESourceSelector. */

    GtkTreeView *tree_view;
    GtkTreeViewDropPosition pos;

    tree_view = GTK_TREE_VIEW (widget);
    pos = GTK_TREE_VIEW_DROP_BEFORE;

    gtk_tree_view_set_drag_dest_row (tree_view, NULL, pos);
}

static gboolean
calendar_selector_drag_motion (GtkWidget *widget,
                               GdkDragContext *context,
                               gint x,
                               gint y,
                               guint time_)
{
    /* XXX This is exactly the same as in EAddressbookSelector.
     *     Consider merging this callback into ESourceSelector. */

    GtkTreeView *tree_view;
    GtkTreeModel *model;
    GtkTreePath *path = NULL;
    GtkTreeIter iter;
    GtkTreeViewDropPosition pos;
    GdkDragAction action = 0;
    gpointer object;

    tree_view = GTK_TREE_VIEW (widget);
    model = gtk_tree_view_get_model (tree_view);

    if (!gtk_tree_view_get_dest_row_at_pos (tree_view, x, y, &path, NULL))
        goto exit;

    if (!gtk_tree_model_get_iter (model, &iter, path))
        goto exit;

    gtk_tree_model_get (model, &iter, 0, &object, -1);

    if (E_IS_SOURCE_GROUP (object) || e_source_get_readonly (object))
        goto exit;

    pos = GTK_TREE_VIEW_DROP_INTO_OR_BEFORE;
    gtk_tree_view_set_drag_dest_row (tree_view, path, pos);

    if (context->actions & GDK_ACTION_MOVE)
        action = GDK_ACTION_MOVE;
    else
        action = context->suggested_action;

exit:
    if (path != NULL)
        gtk_tree_path_free (path);

    if (object != NULL)
        g_object_unref (object);

    gdk_drag_status (context, action, time_);

    return TRUE;
}

static gboolean
calendar_selector_drag_drop (GtkWidget *widget,
                             GdkDragContext *context,
                             gint x,
                             gint y,
                             guint time_)
{
    /* XXX This is exactly the same as in EAddressbookSelector.
     *     Consider merging this callback into ESourceSelector. */

    GtkTreeView *tree_view;
    GtkTreeModel *model;
    GtkTreePath *path;
    GtkTreeIter iter;
    gboolean drop_zone;
    gboolean valid;
    gpointer object;

    tree_view = GTK_TREE_VIEW (widget);
    model = gtk_tree_view_get_model (tree_view);

    if (!gtk_tree_view_get_path_at_pos (
        tree_view, x, y, &path, NULL, NULL, NULL))
        return FALSE;

    valid = gtk_tree_model_get_iter (model, &iter, path);
    gtk_tree_path_free (path);
    g_return_val_if_fail (valid, FALSE);

    gtk_tree_model_get (model, &iter, 0, &object, -1);
    drop_zone = E_IS_SOURCE (object);
    g_object_unref (object);

    return drop_zone;
}

static void
calendar_selector_drag_data_received (GtkWidget *widget,
                                      GdkDragContext *context,
                                      gint x,
                                      gint y,
                                      GtkSelectionData *selection_data,
                                      guint info,
                                      guint time_)
{
    /* XXX This is NEARLY the same as in EAddressbookSelector.
     *     Consider merging this callback into ESourceSelector.
     *     Use a callback to allow subclasses to handle the
     *     received selection data. */

    GtkTreeView *tree_view;
    GtkTreeModel *model;
    GtkTreePath *path = NULL;
    GtkTreeIter iter;
    ECal *client;
    icalcomponent *icalcomp;
    const gchar *string;
    gboolean remove_from_source;
    gboolean success = FALSE;
    gpointer object;

    tree_view = GTK_TREE_VIEW (widget);
    model = gtk_tree_view_get_model (tree_view);

    string = (const gchar *) selection_data->data;
    remove_from_source = (context->action == GDK_ACTION_MOVE);

    if (!gtk_tree_view_get_dest_row_at_pos (tree_view, x, y, &path, NULL))
        goto exit;

    if (!gtk_tree_model_get_iter (model, &iter, path))
        goto exit;

    gtk_tree_model_get (model, &iter, 0, &object, -1);

    if (!E_IS_SOURCE (object) || e_source_get_readonly (object))
        goto exit;

    icalcomp = icalparser_parse_string (string);

    if (icalcomp == NULL)
        goto exit;

    /* FIXME Deal with GDK_ACTION_ASK. */
    if (context->action == GDK_ACTION_COPY) {
        gchar *uid;

        uid = e_cal_component_gen_uid ();
        icalcomponent_set_uid (icalcomp, uid);
    }

    client = auth_new_cal_from_source (
        E_SOURCE (object), E_CAL_SOURCE_TYPE_EVENT);

    if (client != NULL) {
        if (e_cal_open (client, TRUE, NULL)) {
            success = TRUE;
            calendar_selector_update_objects (client, icalcomp);
        }

        g_object_unref (client);
    }

    icalcomponent_free (icalcomp);

exit:
    if (path != NULL)
        gtk_tree_path_free (path);

    if (object != NULL)
        g_object_unref (object);

    gtk_drag_finish (context, success, remove_from_source, time_);
}

static void
calendar_selector_class_init (ECalendarSelectorClass *class)
{
    GtkWidgetClass *widget_class;

    parent_class = g_type_class_peek_parent (class);
    g_type_class_add_private (class, sizeof (ECalendarSelectorPrivate));

    widget_class = GTK_WIDGET_CLASS (class);
    widget_class->drag_leave = calendar_selector_drag_leave;
    widget_class->drag_motion = calendar_selector_drag_motion;
    widget_class->drag_drop = calendar_selector_drag_drop;
    widget_class->drag_data_received = calendar_selector_drag_data_received;
}

static void
calendar_selector_init (ECalendarSelector *selector)
{
    selector->priv = E_CALENDAR_SELECTOR_GET_PRIVATE (selector);

    gtk_drag_dest_set (
        GTK_WIDGET (selector), GTK_DEST_DEFAULT_ALL,
        drag_types, G_N_ELEMENTS (drag_types),
        GDK_ACTION_COPY | GDK_ACTION_MOVE);
}

GType
e_calendar_selector_get_type (void)
{
    static GType type = 0;

    if (G_UNLIKELY (type == 0)) {
        const GTypeInfo type_info = {
            sizeof (ECalendarSelectorClass),
            (GBaseInitFunc) NULL,
            (GBaseFinalizeFunc) NULL,
            (GClassInitFunc) calendar_selector_class_init,
            (GClassFinalizeFunc) NULL,
            NULL,  /* class_data */
            sizeof (ECalendarSelector),
            0,     /* n_preallocs */
            (GInstanceInitFunc) calendar_selector_init,
            NULL   /* value_table */
        };

        type = g_type_register_static (
            E_TYPE_SOURCE_SELECTOR, "ECalendarSelector",
            &type_info, 0);
    }

    return type;
}

GtkWidget *
e_calendar_selector_new (ESourceList *source_list)
{
    g_return_val_if_fail (E_IS_SOURCE_LIST (source_list), NULL);

    return g_object_new (
        E_TYPE_CALENDAR_SELECTOR,
        "source-list", source_list, NULL);
}