path: root/widgets/misc/e-activity-handler.c

/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/* e-activity-handler.c
 *
 * Copyright (C) 2001, 2002, 2003 Novell, Inc.
 *
 * 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: Ettore Perazzoli <ettore@ximian.com>
 */

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

#include "e-activity-handler.h"

#include <gtk/gtksignal.h>
#include <gdk-pixbuf/gdk-pixbuf.h>

#include <libgnome/gnome-i18n.h>
#include <libgnomeui/gnome-popup-menu.h>

#include <gal/util/e-util.h>
#include <gal/widgets/e-popup-menu.h>


#define PARENT_TYPE G_TYPE_OBJECT
static GObjectClass *parent_class = NULL;


#define ICON_SIZE 16


struct _ActivityInfo {
    char *component_id;
    GdkPixbuf *icon_pixbuf;
    guint id;
    char *information;
    gboolean cancellable;
    double progress;
    GtkWidget *menu;
};
typedef struct _ActivityInfo ActivityInfo;

struct _EActivityHandlerPrivate {
    uint next_activity_id;
    GList *activity_infos;
    GSList *task_bars;
};


/* Utility functions.  */

static unsigned int
get_new_activity_id (EActivityHandler *activity_handler)
{
    EActivityHandlerPrivate *priv;

    priv = activity_handler->priv;

    return priv->next_activity_id ++;
}

static GList *
lookup_activity (GList *list,
         guint activity_id,
         int *order_number_return)
{
    GList *p;
    int i;

    for (p = list, i = 0; p != NULL; p = p->next, i ++) {
        ActivityInfo *activity_info;

        activity_info = (ActivityInfo *) p->data;
        if (activity_info->id == activity_id) {
            *order_number_return = i;
            return p;
        }
    }

    *order_number_return = -1;
    return NULL;
}


/* ETaskWidget actions.  */

static int
task_widget_button_press_event_callback (GtkWidget *widget,
                     GdkEventButton *button_event,
                     void *data)
{
    ActivityInfo *activity_info;

    activity_info = (ActivityInfo *) data;

    if (button_event->button == 3)
        return activity_info->cancellable;

    if (button_event->button != 1)
        return FALSE;

    return TRUE;
}


/* Creating and destroying ActivityInfos.  */

static ActivityInfo *
activity_info_new (const char *component_id,
           guint id,
           GdkPixbuf *icon,
           const char *information,
           gboolean cancellable)
{
    ActivityInfo *info;

    info = g_new (ActivityInfo, 1);
    info->component_id   = g_strdup (component_id);
    info->id             = id;
    info->icon_pixbuf    = g_object_ref (icon);
    info->information    = g_strdup (information);
    info->cancellable    = cancellable;
    info->progress       = -1.0; /* (Unknown) */
    info->menu           = NULL;

    return info;
}

static void
activity_info_free (ActivityInfo *info)
{
    g_free (info->component_id);

    g_object_unref (info->icon_pixbuf);
    g_free (info->information);

    if (info->menu != NULL)
        gtk_widget_destroy (info->menu);

    g_free (info);
}

static ETaskWidget *
task_widget_new_from_activity_info (ActivityInfo *activity_info)
{
    GtkWidget *widget;

    widget = e_task_widget_new (activity_info->icon_pixbuf,
                    activity_info->component_id,
                    activity_info->information);
    gtk_widget_show (widget);

    g_signal_connect (widget, "button_press_event",
              G_CALLBACK (task_widget_button_press_event_callback),
              activity_info);

    return E_TASK_WIDGET (widget);
}


/* Task Bar handling.  */

static void
setup_task_bar (EActivityHandler *activity_handler,
        ETaskBar *task_bar)
{
    EActivityHandlerPrivate *priv;
    GList *p;

    priv = activity_handler->priv;

    for (p = g_list_last (priv->activity_infos); p != NULL; p = p->prev) {
        e_task_bar_prepend_task (task_bar,
                     task_widget_new_from_activity_info ((ActivityInfo *) p->data));
    }
}

static void
task_bar_destroy_notify (void *data,
             GObject *task_bar_instance)
{
    EActivityHandler *activity_handler;
    EActivityHandlerPrivate *priv;

    activity_handler = E_ACTIVITY_HANDLER (data);
    priv = activity_handler->priv;

    priv->task_bars = g_slist_remove (priv->task_bars, task_bar_instance);
}


/* GObject methods.  */

static void
impl_dispose (GObject *object)
{
    EActivityHandler *handler;
    EActivityHandlerPrivate *priv;
    GList *p;
    GSList *sp;

    handler = E_ACTIVITY_HANDLER (object);
    priv = handler->priv;

    for (p = priv->activity_infos; p != NULL; p = p->next) {
        ActivityInfo *info;

        info = (ActivityInfo *) p->data;
        activity_info_free (info);
    }

    g_list_free (priv->activity_infos);
    priv->activity_infos = NULL;

    for (sp = priv->task_bars; sp != NULL; sp = sp->next)
        g_object_weak_unref (G_OBJECT (sp->data), task_bar_destroy_notify, handler);
    priv->task_bars = NULL;

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

static void
impl_finalize (GObject *object)
{
    EActivityHandler *handler;
    EActivityHandlerPrivate *priv;

    handler = E_ACTIVITY_HANDLER (object);
    priv = handler->priv;

    g_free (priv);

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


/* GTK+ type stuff.  */

static void
class_init (GObjectClass *object_class)
{
    parent_class = g_type_class_ref(PARENT_TYPE);

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

static void
init (EActivityHandler *activity_handler)
{
    EActivityHandlerPrivate *priv;

    priv = g_new (EActivityHandlerPrivate, 1);
    priv->next_activity_id = 1;
    priv->activity_infos   = NULL;
    priv->task_bars        = NULL;

    activity_handler->priv = priv;
}


EActivityHandler *
e_activity_handler_new (void)
{
    return g_object_new (e_activity_handler_get_type (), 0);
}

void
e_activity_handler_set_message (EActivityHandler *activity_handler,
                const char       *message)
{
    EActivityHandlerPrivate *priv;
    GSList *i;

    priv = activity_handler->priv;

    for (i = priv->task_bars; i; i = i->next)
        e_task_bar_set_message (E_TASK_BAR (i->data), message);
}

void
e_activity_handler_unset_message (EActivityHandler *activity_handler)
{
    EActivityHandlerPrivate *priv;
    GSList *i;

    priv = activity_handler->priv;

    for (i = priv->task_bars; i; i = i->next)
        e_task_bar_unset_message (E_TASK_BAR (i->data));
}

void
e_activity_handler_attach_task_bar (EActivityHandler *activity_handler,
                    ETaskBar *task_bar)
{
    EActivityHandlerPrivate *priv;

    g_return_if_fail (activity_handler != NULL);
    g_return_if_fail (E_IS_ACTIVITY_HANDLER (activity_handler));
    g_return_if_fail (task_bar != NULL);
    g_return_if_fail (E_IS_TASK_BAR (task_bar));

    priv = activity_handler->priv;

    g_object_weak_ref (G_OBJECT (task_bar), task_bar_destroy_notify, activity_handler);

    priv->task_bars = g_slist_prepend (priv->task_bars, task_bar);

    setup_task_bar (activity_handler, task_bar);
}

/* CORBA methods.  */

guint
e_activity_handler_operation_started (EActivityHandler *activity_handler,
                      const char *component_id,
                      GdkPixbuf *icon_pixbuf,
                      const char *information,
                      gboolean cancellable)
{
    EActivityHandlerPrivate *priv;
    ActivityInfo *activity_info;
    unsigned int activity_id;
    GSList *p;

    priv = activity_handler->priv;

    activity_id = get_new_activity_id (activity_handler);

    activity_info = activity_info_new (component_id, activity_id, icon_pixbuf, information, cancellable);

    for (p = priv->task_bars; p != NULL; p = p->next) {
        e_task_bar_prepend_task (E_TASK_BAR (p->data),
                     task_widget_new_from_activity_info (activity_info));
    }

    priv->activity_infos = g_list_prepend (priv->activity_infos, activity_info);

    return activity_id;
}

void
e_activity_handler_operation_progressing (EActivityHandler *activity_handler,
                      guint activity_id,
                      const char *information,
                      double progress)
{
    EActivityHandlerPrivate *priv = activity_handler->priv;
    ActivityInfo *activity_info;
    GList *p;
    GSList *sp;
    int order_number;

    p = lookup_activity (priv->activity_infos, activity_id, &order_number);
    if (p == NULL) {
        g_warning ("EActivityHandler: unknown operation %d", activity_id);
        return;
    }

    activity_info = (ActivityInfo *) p->data;

    g_free (activity_info->information);
    activity_info->information = g_strdup (information);

    activity_info->progress = progress;

    for (sp = priv->task_bars; sp != NULL; sp = sp->next) {
        ETaskBar *task_bar;
        ETaskWidget *task_widget;

        task_bar = E_TASK_BAR (sp->data);
        task_widget = e_task_bar_get_task_widget (task_bar, order_number);

        e_task_widget_update (task_widget, information, progress);
    }
}

void
e_activity_handler_operation_finished (EActivityHandler *activity_handler,
                       guint activity_id)
{
    EActivityHandlerPrivate *priv = activity_handler->priv;
    GList *p;
    GSList *sp;
    int order_number;

    p = lookup_activity (priv->activity_infos, activity_id, &order_number);
    if (p == NULL) {
        g_warning ("e_activity_handler_operation_finished: Unknown activity %d\n", activity_id);
        return;
    }

    activity_info_free ((ActivityInfo *) p->data);
    priv->activity_infos = g_list_remove_link (priv->activity_infos, p);

    for (sp = priv->task_bars; sp != NULL; sp = sp->next) {
        ETaskBar *task_bar;

        task_bar = E_TASK_BAR (sp->data);
        e_task_bar_remove_task (task_bar, order_number);
    }
}


E_MAKE_TYPE (e_activity_handler, "EActivityHandler", EActivityHandler, class_init, init, PARENT_TYPE)