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path: root/widgets/misc/e-activity-handler.c
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/*
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) version 3.
 *
 * 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with the program; if not, see <http://www.gnu.org/licenses/>
 *
 *
 * Authors:
 *      Ettore Perazzoli <ettore@ximian.com>
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 */

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

#include "e-activity-handler.h"

#include <gtk/gtk.h>
#include <glib/gi18n.h>
#include <gdk-pixbuf/gdk-pixbuf.h>

#include <misc/e-popup-menu.h>

#define ICON_SIZE 16


struct _ActivityInfo {
    char *component_id;
    int error_type;
    guint id;
    char *information;
    gboolean cancellable;
    double progress;
    GtkWidget *menu;
    void (*cancel_func) (gpointer data);
    gpointer data;
    gpointer error;
    time_t  error_time;
};
typedef struct _ActivityInfo ActivityInfo;

struct _EActivityHandlerPrivate {
    guint next_activity_id;
    GList *activity_infos;
    GSList *task_bars;
    ELogger *logger;
    guint error_timer;
    guint error_flush_interval;

};

/* In the status bar, we show only errors and info. Errors are pictured as warnings. */
const char *icon_data [] = {"dialog-warning", "dialog-information"};

G_DEFINE_TYPE (EActivityHandler, e_activity_handler, G_TYPE_OBJECT)

/* Utility functions.  */

static void handle_error (ETaskWidget *task);

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,
           const char *information,
           gboolean cancellable)
{
    ActivityInfo *info;

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

    return info;
}

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

    widget = e_task_widget_new_with_cancel (
        activity_info->component_id,
        activity_info->information,
        activity_info->cancel_func,
        activity_info->data);
    etw = (ETaskWidget *) widget;
    etw->id = activity_info->id;
    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) {
        ActivityInfo *info = p->data;
        ETaskWidget *task_widget = task_widget_new_from_activity_info (info);
        task_widget->id = info->id;
        e_task_bar_prepend_task (task_bar, task_widget);
        if (info->error) {
            /* Prepare to handle existing errors*/
            GtkWidget *tool;
            const char *stock;

            stock = info->error_type ? icon_data [1] : icon_data[0];
            tool = e_task_widget_update_image (task_widget, (char *)stock, info->information);
            g_object_set_data ((GObject *) task_widget, "tool", tool);
            g_object_set_data ((GObject *) task_widget, "error", info->error);
            g_object_set_data ((GObject *) task_widget, "activity-handler", activity_handler);
            g_object_set_data ((GObject *) task_widget, "activity", GINT_TO_POINTER(info->id));
            g_object_set_data ((GObject *) task_widget, "error-type", GINT_TO_POINTER(info->error_type));
            g_signal_connect_swapped (tool, "clicked", G_CALLBACK(handle_error), task_widget);
        }
    }
}

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 (e_activity_handler_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 (e_activity_handler_parent_class)->finalize) (object);
}

static void
e_activity_handler_class_init (EActivityHandlerClass *activity_handler_class)
{
    GObjectClass *object_class = (GObjectClass *) activity_handler_class;

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

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

    priv = g_new (EActivityHandlerPrivate, 1);
    priv->next_activity_id = 1;
    priv->activity_infos   = NULL;
    priv->task_bars        = NULL;
    priv->logger           = NULL;
    priv->error_timer      = 0;
    priv->error_flush_interval = 0;
    activity_handler->priv = priv;
}


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

void
e_activity_handler_set_error_flush_time (EActivityHandler *handler, int time)
{
    handler->priv->error_flush_interval = time;
}
void
e_activity_handler_set_logger (EActivityHandler *handler, ELogger *logger)
{
    handler->priv->logger = logger;
}

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);
}

struct _cancel_wdata {
    EActivityHandler *handler;
    ActivityInfo *info;
    guint id;
    void (*cancel)(gpointer);
    gpointer data;
};

static void
cancel_wrapper (gpointer pdata)
{
    struct _cancel_wdata *data = (struct _cancel_wdata *) pdata;
    /* This can be invoked in two scenario. Either to cancel or to hide error */
    if (data->info->error) {
        /* Hide the error */
        EActivityHandler *handler = data->handler;
        ActivityInfo *info;
        int order, len;
        GSList *sp;
        GList *p = lookup_activity (handler->priv->activity_infos, data->id, &order);
        e_logger_log (handler->priv->logger, E_LOG_ERROR, g_object_get_data (data->info->error, "primary"),
                            g_object_get_data (data->info->error, "secondary"));
        gtk_widget_destroy (data->info->error);
        data->info->error = NULL;
        info = data->info;
        for (sp = handler->priv->task_bars; sp != NULL; sp = sp->next) {
            ETaskBar *task_bar;

            task_bar = E_TASK_BAR (sp->data);
            e_task_bar_remove_task_from_id (task_bar, info->id);
        }
        activity_info_free (info);
        len = g_list_length (handler->priv->activity_infos);
        handler->priv->activity_infos = g_list_remove_link (handler->priv->activity_infos, p);
        if (len == 1)
            handler->priv->activity_infos = NULL;
    } else {
        /* Cancel the operation */
        data->cancel (data->data);
    }
    /* No need to free the data. It will be freed as part of the task widget destroy */
}

/* CORBA methods.  */
guint  e_activity_handler_cancelable_operation_started  (EActivityHandler *activity_handler,
                              const char       *component_id,
                                  const char       *information,
                                  gboolean          cancellable,
                              void (*cancel_func)(gpointer),
                              gpointer user_data)
{
    EActivityHandlerPrivate *priv;
    ActivityInfo *activity_info;
    unsigned int activity_id;
    GSList *p;
    struct _cancel_wdata *data;
    gboolean bfree = FALSE;
    priv = activity_handler->priv;

    activity_id = get_new_activity_id (activity_handler);
    activity_info = activity_info_new (component_id, activity_id, information, cancellable);

    data = g_new(struct _cancel_wdata, 1);
    data->handler = activity_handler;
    data->id = activity_id;
    data->info = activity_info;
    data->cancel = cancel_func;
    data->data = user_data;

    activity_info->cancel_func = cancel_wrapper;
    activity_info->data = data;
    for (p = priv->task_bars; p != NULL; p = p->next) {
        ETaskWidget *tw = task_widget_new_from_activity_info (activity_info);
        tw->id = activity_id;
        if (!bfree) {
            /* The data will be freed part of the widget destroy */
            g_object_set_data_full ((GObject *) tw, "free-data", data, g_free);
            bfree = TRUE;
        }
        e_task_bar_prepend_task (E_TASK_BAR (p->data), tw);
    }

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

    return activity_id;

}

guint
e_activity_handler_operation_started (EActivityHandler *activity_handler,
                      const char *component_id,
                      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, information, cancellable);

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

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

    return activity_id;
}

static void
handle_error (ETaskWidget *task)
{
    GtkWidget *tool, *error;
    EActivityHandler *activity_handler;
    guint id;
    int error_type  = GPOINTER_TO_INT((g_object_get_data ((GObject *) task, "error-type")));
    tool = g_object_get_data ((GObject *) task, "tool");
    error = g_object_get_data ((GObject *) task, "error");
    activity_handler = g_object_get_data ((GObject *) task, "activity-handler");
    id = GPOINTER_TO_UINT (g_object_get_data ((GObject *) task, "activity"));
    e_activity_handler_operation_finished (activity_handler, id);
    gtk_widget_show (error);
    e_logger_log (activity_handler->priv->logger, error_type,
              g_object_get_data ((GObject *) error, "primary"),
                    g_object_get_data ((GObject *) error, "secondary"));
}

static gboolean
error_cleanup (EActivityHandler *activity_handler)
{
    EActivityHandlerPrivate *priv = activity_handler->priv;
    GList *p, *node;
    GSList *sp;
    int i;
    time_t now = time (NULL);
    gboolean berror = FALSE;

    for (p = priv->activity_infos, i = 0; p != NULL; i++) {
        ActivityInfo *info;

        info = (ActivityInfo *) p->data;
        if (info->error)
            berror = TRUE;
        if (info->error && info->error_time && (now - info->error_time) > 5 ) {
            /* Error older than wanted time. So cleanup */
            e_logger_log (priv->logger, info->error_type, g_object_get_data (info->error, "primary"),
                            g_object_get_data (info->error, "secondary"));

            if (GTK_IS_DIALOG (info->error))
                gtk_dialog_response (GTK_DIALOG (info->error), GTK_RESPONSE_CLOSE);
            else
                gtk_widget_destroy (info->error);

            node = p;
            p = p->next;

            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_from_id (task_bar, info->id);
            }
            activity_info_free (info);
            priv->activity_infos = g_list_remove_link (priv->activity_infos, node);

        } else
            p = p->next;
    }
    if (!berror)
        priv->error_timer = 0;
    return berror;
}

guint
e_activity_handler_make_error (EActivityHandler *activity_handler,
                      const char *component_id,
                      int error_type,
                      GtkWidget  *error)
{
    EActivityHandlerPrivate *priv;
    ActivityInfo *activity_info;
    unsigned int activity_id;
    GSList *p;
    char *information = g_object_get_data((GObject *) error, "primary");
    const char *img;

    priv = activity_handler->priv;
    activity_id = get_new_activity_id (activity_handler);

    activity_info = activity_info_new (component_id, activity_id, information, TRUE);
    activity_info->error = error;
    activity_info->error_time = time (NULL);
    activity_info->error_type = error_type;

    img = error_type ? icon_data[1] : icon_data[0];
    for (p = priv->task_bars; p != NULL; p = p->next) {
        ETaskBar *task_bar;
        ETaskWidget *task_widget;
        GtkWidget *tool;

        task_bar = E_TASK_BAR (p->data);
        task_widget = task_widget_new_from_activity_info (activity_info);
        task_widget->id = activity_id;
        e_task_bar_prepend_task (E_TASK_BAR (p->data), task_widget);

        tool = e_task_widget_update_image (task_widget, (char *)img, information);
        g_object_set_data ((GObject *) task_widget, "tool", tool);
        g_object_set_data ((GObject *) task_widget, "error", error);
        g_object_set_data ((GObject *) task_widget, "activity-handler", activity_handler);
        g_object_set_data ((GObject *) task_widget, "activity", GINT_TO_POINTER(activity_id));
        g_object_set_data ((GObject *) task_widget, "error-type", GINT_TO_POINTER(error_type));
        g_signal_connect_swapped (tool, "clicked", G_CALLBACK(handle_error), task_widget);
    }

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

    if (!activity_handler->priv->error_timer)
        activity_handler->priv->error_timer = g_timeout_add (activity_handler->priv->error_flush_interval, (GSourceFunc)error_cleanup, activity_handler);

    return activity_id;
}

void
e_activity_handler_operation_set_error(EActivityHandler *activity_handler,
                      guint activity_id,
                      GtkWidget *error)
{
    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;
    activity_info->error = error;
    activity_info->error_time = time (NULL);
    activity_info->error_type = E_LOG_ERROR;
    g_free (activity_info->information);
    activity_info->information = g_strdup (g_object_get_data ((GObject *) error, "primary"));
    for (sp = priv->task_bars; sp != NULL; sp = sp->next) {
        ETaskBar *task_bar;
        ETaskWidget *task_widget;
        GtkWidget *tool;

        task_bar = E_TASK_BAR (sp->data);
        task_widget = e_task_bar_get_task_widget_from_id (task_bar, activity_info->id);
        if (!task_widget)
            continue;

        tool = e_task_widget_update_image (task_widget, (char *)icon_data[0], g_object_get_data ((GObject *) error, "primary"));
        g_object_set_data ((GObject *) task_widget, "tool", tool);
        g_object_set_data ((GObject *) task_widget, "error", error);
        g_object_set_data ((GObject *) task_widget, "activity-handler", activity_handler);
        g_object_set_data ((GObject *) task_widget, "activity", GINT_TO_POINTER(activity_id));
        g_object_set_data ((GObject *) task_widget, "error-type", GINT_TO_POINTER(E_LOG_ERROR));
        g_signal_connect_swapped (tool, "clicked", G_CALLBACK(handle_error), task_widget);
    }

    if (!activity_handler->priv->error_timer)
        activity_handler->priv->error_timer = g_timeout_add (activity_handler->priv->error_flush_interval, (GSourceFunc) error_cleanup, activity_handler);
}

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_from_id (task_bar, activity_info->id);
        if (!task_widget)
            continue;

        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_from_id (task_bar, activity_id);
    }
}