path: root/calendar/gui/tasks-component.c

/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/* tasks-component.c
 *
 * Copyright (C) 2003  Rodrigo Moya
 *
 * 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., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 * Author: Rodrigo Moya <rodrigo@ximian.com>
 */

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

#include <errno.h>
#include <string.h>
#include <bonobo/bonobo-control.h>
#include <bonobo/bonobo-i18n.h>
#include <gconf/gconf-client.h>
#include <libecal/e-cal.h>
#include "e-cal-model.h"
#include "e-tasks.h"
#include "tasks-component.h"
#include "tasks-control.h"
#include "widgets/misc/e-source-selector.h"


#define CREATE_TASK_ID "task"


#define PARENT_TYPE bonobo_object_get_type ()

static BonoboObjectClass *parent_class = NULL;

struct _TasksComponentPrivate {
    char *config_directory;
    GConfClient *gconf_client;
    ESourceList *source_list;
    GSList *source_selection;
    GtkWidget *tasks;
};

/* Utility functions.  */

static void
add_uri_for_source (ESource *source, ETasks *tasks)
{
    ECal *client;
    ECalModel *model;
    GError *error = NULL;
    char *uri = e_source_get_uri (source);

    model = e_calendar_table_get_model (e_tasks_get_calendar_table (tasks));
    client = e_cal_model_get_client_for_uri (model, uri);
    if (!client) {
        client = e_cal_new (uri, CALOBJ_TYPE_TODO);
        if (e_cal_open (client, FALSE, &error)) {
            e_cal_model_add_client (model, client);
        } else {
            g_warning (G_STRLOC ": Could not open tasks at %s: %s", uri, error->message);
            g_error_free (error);
            g_object_unref (client);
        }
    }

    g_free (uri);
}

static void
remove_uri_for_source (ESource *source, ETasks *tasks)
{
    ECal *client;
    ECalModel *model;
    char *uri = e_source_get_uri (source);

    model = e_calendar_table_get_model (e_tasks_get_calendar_table (tasks));
    client = e_cal_model_get_client_for_uri (model, uri);
    if (client)
        e_cal_model_remove_client (model, client);

    g_free (uri);
}

static gboolean
is_in_selection (GSList *selection, ESource *source)
{
    GSList *l;
    
    for (l = selection; l; l = l->next) {
        ESource *selected_source = l->data;
        
        if (!strcmp (e_source_peek_uid (selected_source), e_source_peek_uid (source)))
            return TRUE;
    }

    return FALSE;
}

static void
update_uris_for_selection (ESourceSelector *selector, TasksComponent *component)
{
    TasksComponentPrivate *priv;
    GSList *selection, *l;
    
    selection = e_source_selector_get_selection (selector);

    priv = component->priv;
    
    for (l = priv->source_selection; l; l = l->next) {
        ESource *old_selected_source = l->data;

        if (!is_in_selection (selection, old_selected_source))
            remove_uri_for_source (old_selected_source, E_TASKS (priv->tasks));
    }   
    
    for (l = selection; l; l = l->next) {
        ESource *selected_source = l->data;
        
        add_uri_for_source (selected_source, E_TASKS (priv->tasks));
    }

    e_source_selector_free_selection (priv->source_selection);
    priv->source_selection = selection;
}

/* Callbacks.  */
static void
source_selection_changed_cb (ESourceSelector *selector, TasksComponent *component)
{
    update_uris_for_selection (selector, component);
}

static void
primary_source_selection_changed_cb (ESourceSelector *selector, TasksComponent *component)
{
    TasksComponentPrivate *priv;
    ESource *source;
    ECal *client;
    char *uri;
    ECalModel *model;

    priv = component->priv;
    
    source = e_source_selector_peek_primary_selection (selector);
    if (!source)
        return;

    /* Set the default */
    uri = e_source_get_uri (source);
    model = e_calendar_table_get_model (e_tasks_get_calendar_table (E_TASKS (priv->tasks)));
    client = e_cal_model_get_client_for_uri (model, uri);
    if (client)
        e_cal_model_set_default_client (model, client);

    g_free (uri);

}

/* GObject methods */

static void
impl_dispose (GObject *object)
{
    TasksComponentPrivate *priv = TASKS_COMPONENT (object)->priv;

    if (priv->source_list != NULL) {
        g_object_unref (priv->source_list);
        priv->source_list = NULL;
    }

    if (priv->source_selection != NULL) {
        e_source_selector_free_selection (priv->source_selection);
        priv->source_selection = NULL;
    }

    if (priv->gconf_client != NULL) {
        g_object_unref (priv->gconf_client);
        priv->gconf_client = NULL;
    }

    (* G_OBJECT_CLASS (parent_class)->dispose) (object);
}

static void
impl_finalize (GObject *object)
{
    TasksComponentPrivate *priv = TASKS_COMPONENT (object)->priv;

    g_free (priv->config_directory);
    g_free (priv);

    (* G_OBJECT_CLASS (parent_class)->finalize) (object);
}

/* Evolution::Component CORBA methods */

static void
control_activate_cb (BonoboControl *control, gboolean activate, gpointer data)
{
    ETasks *tasks = data;

    if (activate)
        tasks_control_activate (control, tasks);
    else
        tasks_control_deactivate (control, tasks);
}

static void
impl_createControls (PortableServer_Servant servant,
             Bonobo_Control *corba_sidebar_control,
             Bonobo_Control *corba_view_control,
             CORBA_Environment *ev)
{
    TasksComponent *component = TASKS_COMPONENT (bonobo_object_from_servant (servant));
    TasksComponentPrivate *priv;
    GtkWidget *selector;
    GtkWidget *selector_scrolled_window;
    BonoboControl *sidebar_control, *view_control;

    priv = component->priv;

    /* create sidebar selector */
    selector = e_source_selector_new (priv->source_list);
    gtk_widget_show (selector);

    selector_scrolled_window = gtk_scrolled_window_new (NULL, NULL);
    gtk_container_add (GTK_CONTAINER (selector_scrolled_window), selector);
    gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (selector_scrolled_window),
                    GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
    gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (selector_scrolled_window),
                         GTK_SHADOW_IN);
    gtk_widget_show (selector_scrolled_window);

    sidebar_control = bonobo_control_new (selector_scrolled_window);

    /* create the tasks view */
    view_control = tasks_control_new ();
    priv->tasks = bonobo_control_get_widget (view_control);
    g_signal_connect (view_control, "activate", G_CALLBACK (control_activate_cb), priv->tasks);

    g_signal_connect_object (selector, "selection_changed",
                 G_CALLBACK (source_selection_changed_cb),
                 G_OBJECT (component), 0);
    g_signal_connect_object (selector, "primary_selection_changed",
                 G_CALLBACK (primary_source_selection_changed_cb),
                 G_OBJECT (component), 0);

    update_uris_for_selection (E_SOURCE_SELECTOR (selector), component);

    *corba_sidebar_control = CORBA_Object_duplicate (BONOBO_OBJREF (sidebar_control), ev);
    *corba_view_control = CORBA_Object_duplicate (BONOBO_OBJREF (view_control), ev);
}

static GNOME_Evolution_CreatableItemTypeList *
impl__get_userCreatableItems (PortableServer_Servant servant,
                  CORBA_Environment *ev)
{
    GNOME_Evolution_CreatableItemTypeList *list = GNOME_Evolution_CreatableItemTypeList__alloc ();

    list->_length  = 1;
    list->_maximum = list->_length;
    list->_buffer  = GNOME_Evolution_CreatableItemTypeList_allocbuf (list->_length);

    CORBA_sequence_set_release (list, FALSE);

    list->_buffer[0].id = CREATE_TASK_ID;
    list->_buffer[0].description = _("New task");
    list->_buffer[0].menuDescription = _("_Task");
    list->_buffer[0].tooltip = _("Create a new task");
    list->_buffer[0].menuShortcut = 't';
    list->_buffer[0].iconName = "new_task-16.png";

    return list;
}

static void
impl_requestCreateItem (PortableServer_Servant servant,
            const CORBA_char *item_type_name,
            CORBA_Environment *ev)
{
    /* FIXME: fill me in */

    CORBA_exception_set (ev, CORBA_USER_EXCEPTION, ex_GNOME_Evolution_Component_UnknownType, NULL);
}

/* Initialization */

static void
tasks_component_class_init (TasksComponentClass *klass)
{
    POA_GNOME_Evolution_Component__epv *epv = &klass->epv;
    GObjectClass *object_class = G_OBJECT_CLASS (klass);

    parent_class = g_type_class_peek_parent (klass);

    epv->createControls          = impl_createControls;
    epv->_get_userCreatableItems = impl__get_userCreatableItems;
    epv->requestCreateItem       = impl_requestCreateItem;

    object_class->dispose = impl_dispose;
    object_class->finalize = impl_finalize;
}

static void
tasks_component_init (TasksComponent *component, TasksComponentClass *klass)
{
    TasksComponentPrivate *priv;
    GSList *groups;

    priv = g_new0 (TasksComponentPrivate, 1);
    priv->config_directory = g_build_filename (g_get_home_dir (),
                           ".evolution", "tasks", "config",
                           NULL);

    /* load the groups from the configuration */
    priv->gconf_client = gconf_client_get_default ();
    priv->source_list = e_source_list_new_for_gconf (priv->gconf_client,
                             "/apps/evolution/tasks/sources");

    /* create default tasks folders if there are no groups */
    groups = e_source_list_peek_groups (priv->source_list);
    if (!groups) {
        ESourceGroup *group;
        ESource *source;
        char *base_uri, *new_dir;

        /* create the source group */
        base_uri = g_build_filename (g_get_home_dir (),
                         ".evolution/tasks/local/OnThisComputer/",
                         NULL);
        group = e_source_group_new (_("On This Computer"), base_uri);
        e_source_list_add_group (priv->source_list, group, -1);

        /* migrate tasks from older setup */
        if (!migrate_old_tasks (group)) {
            /* create default tasks folders */
            new_dir = g_build_filename (base_uri, "Personal/", NULL);
            if (!e_mkdir_hier (new_dir, 0700)) {
                source = e_source_new (_("Personal"), "Personal");
                e_source_group_add_source (group, source, -1);
            }

            g_free (new_dir);
        }

        g_free (base_uri);
    }

    component->priv = priv;
}

/* Public API */

TasksComponent *
tasks_component_peek (void)
{
    static TasksComponent *component = NULL;

    if (component == NULL) {
        component = g_object_new (tasks_component_get_type (), NULL);

        if (e_mkdir_hier (component->priv->config_directory, 0777) != 0) {
            g_warning (G_STRLOC ": Cannot create directory %s: %s",
                   component->priv->config_directory, g_strerror (errno));
            g_object_unref (component);
            component = NULL;
        }
    }

    return component;
}

const char *
tasks_component_peek_config_directory (TasksComponent *component)
{
    return (const char *) component->priv->config_directory;
}

BONOBO_TYPE_FUNC_FULL (TasksComponent, GNOME_Evolution_Component, PARENT_TYPE, tasks_component)