path: root/calendar/gui/dialogs/task-editor.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/* Evolution calendar - Task editor dialog
 *
 * Copyright (C) 2000 Ximian, Inc.
 * Copyright (C) 2001 Ximian, Inc.
 *
 * Authors: Miguel de Icaza <miguel@ximian.com>
 *          Federico Mena-Quintero <federico@ximian.com>
 *          Seth Alves <alves@hungry.com>
 *          JP Rosevear <jpr@ximian.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., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
 */

#include <config.h>
#include <string.h>
#include <glade/glade.h>
#include <gal/widgets/e-unicode.h>
#include <libgnome/gnome-i18n.h>

#include "task-page.h"
#include "task-details-page.h"
#include "meeting-page.h"
#include "cancel-comp.h"
#include "task-editor.h"

struct _TaskEditorPrivate {
    TaskPage *task_page;
    TaskDetailsPage *task_details_page;
    MeetingPage *meet_page;

    EMeetingModel *model;
    
    gboolean meeting_shown;
    gboolean existing_org;
    gboolean updating;  
};



static void task_editor_class_init (TaskEditorClass *class);
static void task_editor_init (TaskEditor *te);
static void task_editor_edit_comp (CompEditor *editor, CalComponent *comp);
static void task_editor_send_comp (CompEditor *editor, CalComponentItipMethod method);
static void task_editor_destroy (GtkObject *object);

static void assign_task_cmd (GtkWidget *widget, gpointer data);
static void refresh_task_cmd (GtkWidget *widget, gpointer data);
static void cancel_task_cmd (GtkWidget *widget, gpointer data);
static void forward_cmd (GtkWidget *widget, gpointer data);

static void model_row_changed_cb (ETableModel *etm, int row, gpointer data);
static void row_count_changed_cb (ETableModel *etm, int row, int count, gpointer data);

static BonoboUIVerb verbs [] = {
    BONOBO_UI_UNSAFE_VERB ("ActionAssignTask", assign_task_cmd),
    BONOBO_UI_UNSAFE_VERB ("ActionRefreshTask", refresh_task_cmd),
    BONOBO_UI_UNSAFE_VERB ("ActionCancelTask", cancel_task_cmd),
    BONOBO_UI_UNSAFE_VERB ("ActionForward", forward_cmd),

    BONOBO_UI_VERB_END
};

static CompEditorClass *parent_class;



/**
 * task_editor_get_type:
 *
 * Registers the #TaskEditor class if necessary, and returns the type ID
 * associated to it.
 *
 * Return value: The type ID of the #TaskEditor class.
 **/
GtkType
task_editor_get_type (void)
{
    static GtkType task_editor_type = 0;

    if (!task_editor_type) {
        static const GtkTypeInfo task_editor_info = {
            "TaskEditor",
            sizeof (TaskEditor),
            sizeof (TaskEditorClass),
            (GtkClassInitFunc) task_editor_class_init,
            (GtkObjectInitFunc) task_editor_init,
            NULL, /* reserved_1 */
            NULL, /* reserved_2 */
            (GtkClassInitFunc) NULL
        };

        task_editor_type = gtk_type_unique (TYPE_COMP_EDITOR,
                             &task_editor_info);
    }

    return task_editor_type;
}

/* Class initialization function for the event editor */
static void
task_editor_class_init (TaskEditorClass *klass)
{
    GtkObjectClass *object_class;
    CompEditorClass *editor_class;

    object_class = (GtkObjectClass *) klass;
    editor_class = (CompEditorClass *) klass;

    parent_class = gtk_type_class (TYPE_COMP_EDITOR);

    editor_class->edit_comp = task_editor_edit_comp;
    editor_class->send_comp = task_editor_send_comp;

    object_class->destroy = task_editor_destroy;
}

static void
set_menu_sens (TaskEditor *te) 
{
    TaskEditorPrivate *priv;
    gboolean sens;
    
    priv = te->priv;

    sens = priv->meeting_shown;
    comp_editor_set_ui_prop (COMP_EDITOR (te), 
                 "/commands/ActionAssignTask", 
                 "sensitive", sens ? "0" : "1");

    sens = sens && priv->existing_org;
    comp_editor_set_ui_prop (COMP_EDITOR (te), 
                 "/commands/ActionRefreshTask", 
                 "sensitive", sens ? "1" : "0");
    comp_editor_set_ui_prop (COMP_EDITOR (te), 
                 "/commands/ActionCancelTask", 
                 "sensitive", sens ? "1" : "0");
}

static void
init_widgets (TaskEditor *te)
{
    TaskEditorPrivate *priv;

    priv = te->priv;

    gtk_signal_connect (GTK_OBJECT (priv->model), "model_row_changed",
                GTK_SIGNAL_FUNC (model_row_changed_cb), te);
    gtk_signal_connect (GTK_OBJECT (priv->model), "model_rows_inserted",
                GTK_SIGNAL_FUNC (row_count_changed_cb), te);
    gtk_signal_connect (GTK_OBJECT (priv->model), "model_rows_deleted",
                GTK_SIGNAL_FUNC (row_count_changed_cb), te);
}

/* Object initialization function for the task editor */
static void
task_editor_init (TaskEditor *te)
{
    TaskEditorPrivate *priv;
    
    priv = g_new0 (TaskEditorPrivate, 1);
    te->priv = priv;

    priv->task_page = task_page_new ();
    comp_editor_append_page (COMP_EDITOR (te), 
                 COMP_EDITOR_PAGE (priv->task_page),
                 _("Basic"));

    priv->task_details_page = task_details_page_new ();
    comp_editor_append_page (COMP_EDITOR (te),
                 COMP_EDITOR_PAGE (priv->task_details_page),
                 _("Details"));

    priv->model = E_MEETING_MODEL (e_meeting_model_new ());

    priv->meet_page = meeting_page_new (priv->model);
    comp_editor_append_page (COMP_EDITOR (te),
                 COMP_EDITOR_PAGE (priv->meet_page),
                 _("Assignment"));

    comp_editor_merge_ui (COMP_EDITOR (te), EVOLUTION_DATADIR 
                  "/gnome/ui/evolution-task-editor.xml",
                  verbs);

    priv->meeting_shown = TRUE;
    priv->existing_org = FALSE;
    priv->updating = FALSE; 

    init_widgets (te);
    set_menu_sens (te);
}

static void
task_editor_edit_comp (CompEditor *editor, CalComponent *comp)
{
    TaskEditor *te;
    TaskEditorPrivate *priv;
    GSList *attendees = NULL;
    
    te = TASK_EDITOR (editor);
    priv = te->priv;

    priv->updating = TRUE;

    priv->existing_org = cal_component_has_organizer (comp);
    
    cal_component_get_attendee_list (comp, &attendees);
    if (attendees == NULL) {
        if (priv->meeting_shown)
            comp_editor_remove_page (editor, COMP_EDITOR_PAGE (priv->meet_page));
        priv->meeting_shown = FALSE;
    } else {
        GSList *l;

        if (!priv->meeting_shown)
            comp_editor_append_page (COMP_EDITOR (te),
                         COMP_EDITOR_PAGE (priv->meet_page),
                         _("Assignment"));

        for (l = attendees; l != NULL; l = l->next) {
            CalComponentAttendee *ca = l->data;
            EMeetingAttendee *ia = E_MEETING_ATTENDEE (e_meeting_attendee_new_from_cal_component_attendee (ca));
            
            e_meeting_model_add_attendee (priv->model, ia);
            gtk_object_unref (GTK_OBJECT (ia));
        }
        priv->meeting_shown = TRUE;     
    }
    cal_component_free_attendee_list (attendees);

    set_menu_sens (te);
    comp_editor_set_needs_send (COMP_EDITOR (te), priv->meeting_shown);

    priv->updating = FALSE;
    
    if (parent_class->edit_comp)
        parent_class->edit_comp (editor, comp);
}

static void
task_editor_send_comp (CompEditor *editor, CalComponentItipMethod method)
{
    TaskEditor *te = TASK_EDITOR (editor);
    TaskEditorPrivate *priv;
    CalComponent *comp = NULL;

    priv = te->priv;

    /* Don't cancel more than once or when just publishing */
    if (method == CAL_COMPONENT_METHOD_PUBLISH ||
        method == CAL_COMPONENT_METHOD_CANCEL)
        goto parent;
    
    comp = meeting_page_get_cancel_comp (priv->meet_page);
    if (comp != NULL) {     
        itip_send_comp (CAL_COMPONENT_METHOD_CANCEL, comp);
        gtk_object_unref (GTK_OBJECT (comp));
    }

 parent:
    if (parent_class->send_comp)
        parent_class->send_comp (editor, method);
}

/* Destroy handler for the event editor */
static void
task_editor_destroy (GtkObject *object)
{
    TaskEditor *te;
    TaskEditorPrivate *priv;

    g_return_if_fail (object != NULL);
    g_return_if_fail (IS_TASK_EDITOR (object));

    te = TASK_EDITOR (object);
    priv = te->priv;

    gtk_object_unref (GTK_OBJECT (priv->task_page));
    gtk_object_unref (GTK_OBJECT (priv->task_details_page));
    gtk_object_unref (GTK_OBJECT (priv->meet_page));
    
    gtk_object_unref (GTK_OBJECT (priv->model));
    
    if (GTK_OBJECT_CLASS (parent_class)->destroy)
        (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
}

/**
 * task_editor_new:
 *
 * Creates a new event editor dialog.
 *
 * Return value: A newly-created event editor dialog, or NULL if the event
 * editor could not be created.
 **/
TaskEditor *
task_editor_new (void)
{
    return TASK_EDITOR (gtk_type_new (TYPE_TASK_EDITOR));
}

static void
assign_task_cmd (GtkWidget *widget, gpointer data)
{
    TaskEditor *te = TASK_EDITOR (data);
    TaskEditorPrivate *priv;

    priv = te->priv;

    if (!priv->meeting_shown) {
        comp_editor_append_page (COMP_EDITOR (te),
                     COMP_EDITOR_PAGE (priv->meet_page),
                     _("Assignment"));
        priv->meeting_shown = TRUE;

        set_menu_sens (te);
        comp_editor_set_needs_send (COMP_EDITOR (te), priv->meeting_shown);
    }

    comp_editor_show_page (COMP_EDITOR (te),
                   COMP_EDITOR_PAGE (priv->meet_page));
}

static void
refresh_task_cmd (GtkWidget *widget, gpointer data)
{
    TaskEditor *te = TASK_EDITOR (data);

    comp_editor_send_comp (COMP_EDITOR (te), CAL_COMPONENT_METHOD_REFRESH);
}

static void
cancel_task_cmd (GtkWidget *widget, gpointer data)
{
    TaskEditor *te = TASK_EDITOR (data);
    CalComponent *comp;
    
    comp = comp_editor_get_current_comp (COMP_EDITOR (te));
    if (cancel_component_dialog (comp)) {
        comp_editor_send_comp (COMP_EDITOR (te), CAL_COMPONENT_METHOD_CANCEL);
        comp_editor_delete_comp (COMP_EDITOR (te));
    }
}

static void
forward_cmd (GtkWidget *widget, gpointer data)
{
    TaskEditor *te = TASK_EDITOR (data);
    
    if (comp_editor_save_comp (COMP_EDITOR (te), TRUE))
        comp_editor_send_comp (COMP_EDITOR (te), CAL_COMPONENT_METHOD_PUBLISH);
}

static void
model_row_changed_cb (ETableModel *etm, int row, gpointer data)
{
    TaskEditor *te = TASK_EDITOR (data);
    TaskEditorPrivate *priv;
    
    priv = te->priv;
    
    if (!priv->updating)
        comp_editor_set_changed (COMP_EDITOR (te), TRUE);
}

static void
row_count_changed_cb (ETableModel *etm, int row, int count, gpointer data)
{
    TaskEditor *te = TASK_EDITOR (data);
    TaskEditorPrivate *priv;
    
    priv = te->priv;
    
    if (!priv->updating)
        comp_editor_set_changed (COMP_EDITOR (te), TRUE);
}