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

/*
 * e-activity-proxy.c
 *
 * 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/>
 *
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 */

#include "e-activity-proxy.h"

#include <glib/gi18n.h>

#define E_ACTIVITY_PROXY_GET_PRIVATE(obj) \
    (G_TYPE_INSTANCE_GET_PRIVATE \
    ((obj), E_TYPE_ACTIVITY_PROXY, EActivityProxyPrivate))

struct _EActivityProxyPrivate {
    EActivity *activity;
    GtkWidget *button;
    GtkWidget *image;
    GtkWidget *label;
    GtkWidget *cancel;
    GtkWidget *spinner;
};

enum {
    PROP_0,
    PROP_ACTIVITY
};

G_DEFINE_TYPE (
    EActivityProxy,
    e_activity_proxy,
    GTK_TYPE_EVENT_BOX)

static void
activity_proxy_cancel (EActivity *activity)
{
    GCancellable *cancellable;

    /* We shouldn't get here unless the EActivity has a GCancellable,
     * since otherwise the cancel button is invisible and unclickable.
     * g_cancellable_cancel() will emit a warning if this breaks. */

    cancellable = e_activity_get_cancellable (activity);
    g_cancellable_cancel (cancellable);
}

static void
activity_proxy_update (EActivityProxy *proxy)
{
    EActivity *activity;
    GCancellable *cancellable;
    const gchar *icon_name;
    gboolean cancelled;
    gboolean clickable;
    gboolean completed;
    gboolean sensitive;
    gboolean visible;
    gchar *description;

    activity = proxy->priv->activity;
    cancellable = e_activity_get_cancellable (activity);
    cancelled = g_cancellable_is_cancelled (cancellable);
    clickable = e_activity_get_clickable (activity);
    completed = e_activity_is_completed (activity);
    icon_name = e_activity_get_icon_name (activity);

    description = e_activity_describe (activity);
    gtk_widget_set_tooltip_text (GTK_WIDGET (proxy), description);
    gtk_label_set_text (GTK_LABEL (proxy->priv->label), description);
    gtk_widget_set_visible (GTK_WIDGET (proxy), (description != NULL));
    g_free (description);

    /* Note, an activity requires an icon name in order to
     * be clickable.  We don't support spinner buttons. */
    if (icon_name != NULL) {
        gtk_image_set_from_icon_name (
            GTK_IMAGE (proxy->priv->image),
            icon_name, GTK_ICON_SIZE_MENU);
        gtk_button_set_image (
            GTK_BUTTON (proxy->priv->button),
            gtk_image_new_from_icon_name (
            icon_name, GTK_ICON_SIZE_MENU));
        gtk_widget_hide (proxy->priv->spinner);
        if (clickable) {
            gtk_widget_show (proxy->priv->button);
            gtk_widget_hide (proxy->priv->image);
        } else {
            gtk_widget_hide (proxy->priv->button);
            gtk_widget_show (proxy->priv->image);
        }
    } else {
        gtk_widget_show (proxy->priv->spinner);
        gtk_widget_hide (proxy->priv->button);
        gtk_widget_hide (proxy->priv->image);
    }

    visible = (cancellable != NULL);
    gtk_widget_set_visible (proxy->priv->cancel, visible);

    sensitive = !(cancelled || completed);
    gtk_widget_set_sensitive (proxy->priv->cancel, sensitive);
}

static void
activity_proxy_set_activity (EActivityProxy *proxy,
                             EActivity *activity)
{
    g_return_if_fail (proxy->priv->activity == NULL);

    proxy->priv->activity = g_object_ref (activity);
}

static void
activity_proxy_set_property (GObject *object,
                             guint property_id,
                             const GValue *value,
                             GParamSpec *pspec)
{
    switch (property_id) {
        case PROP_ACTIVITY:
            activity_proxy_set_activity (
                E_ACTIVITY_PROXY (object),
                g_value_get_object (value));
            return;
    }

    G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}

static void
activity_proxy_get_property (GObject *object,
                             guint property_id,
                             GValue *value,
                             GParamSpec *pspec)
{
    switch (property_id) {
        case PROP_ACTIVITY:
            g_value_set_object (
                value, e_activity_proxy_get_activity (
                E_ACTIVITY_PROXY (object)));
            return;
    }

    G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}

static void
activity_proxy_dispose (GObject *object)
{
    EActivityProxyPrivate *priv;

    priv = E_ACTIVITY_PROXY_GET_PRIVATE (object);

    if (priv->activity != NULL) {
        g_signal_handlers_disconnect_matched (
            priv->activity, G_SIGNAL_MATCH_FUNC, 0, 0,
            NULL, activity_proxy_update, NULL);
        g_object_unref (priv->activity);
        priv->activity = NULL;
    }

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

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

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

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

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

    /* Chain up to parent's dispose() method. */
    G_OBJECT_CLASS (e_activity_proxy_parent_class)->dispose (object);
}

static void
activity_proxy_constructed (GObject *object)
{
    EActivityProxy *proxy;

    proxy = E_ACTIVITY_PROXY (object);

    g_signal_connect_swapped (
        proxy->priv->button, "clicked",
        G_CALLBACK (e_activity_clicked), proxy->priv->activity);

    g_signal_connect_swapped (
        proxy->priv->cancel, "clicked",
        G_CALLBACK (activity_proxy_cancel), proxy->priv->activity);

    g_signal_connect_swapped (
        proxy->priv->activity, "cancelled",
        G_CALLBACK (activity_proxy_update), proxy);

    g_signal_connect_swapped (
        proxy->priv->activity, "completed",
        G_CALLBACK (activity_proxy_update), proxy);

    g_signal_connect_swapped (
        proxy->priv->activity, "notify",
        G_CALLBACK (activity_proxy_update), proxy);

    activity_proxy_update (proxy);
}

static void
e_activity_proxy_class_init (EActivityProxyClass *class)
{
    GObjectClass *object_class;

    g_type_class_add_private (class, sizeof (EActivityProxyPrivate));

    object_class = G_OBJECT_CLASS (class);
    object_class->set_property = activity_proxy_set_property;
    object_class->get_property = activity_proxy_get_property;
    object_class->dispose = activity_proxy_dispose;
    object_class->constructed = activity_proxy_constructed;

    g_object_class_install_property (
        object_class,
        PROP_ACTIVITY,
        g_param_spec_object (
            "activity",
            NULL,
            NULL,
            E_TYPE_ACTIVITY,
            G_PARAM_READWRITE |
            G_PARAM_CONSTRUCT_ONLY));
}

static void
e_activity_proxy_init (EActivityProxy *proxy)
{
    GtkWidget *container;
    GtkWidget *widget;

    proxy->priv = E_ACTIVITY_PROXY_GET_PRIVATE (proxy);

    container = GTK_WIDGET (proxy);

    widget = gtk_frame_new (NULL);
    gtk_frame_set_shadow_type (GTK_FRAME (widget), GTK_SHADOW_IN);
    gtk_container_add (GTK_CONTAINER (container), widget);
    gtk_widget_show (widget);

    container = widget;

    widget = gtk_hbox_new (FALSE, 3);
    gtk_container_add (GTK_CONTAINER (container), widget);
    gtk_widget_show (widget);

    container = widget;

    widget = gtk_image_new ();
    gtk_box_pack_start (GTK_BOX (container), widget, FALSE, FALSE, 0);
    proxy->priv->image = g_object_ref (widget);
    gtk_widget_hide (widget);

    widget = gtk_button_new ();
    gtk_button_set_relief (GTK_BUTTON (widget), GTK_RELIEF_NONE);
    gtk_box_pack_start (GTK_BOX (container), widget, FALSE, FALSE, 0);
    proxy->priv->button = g_object_ref (widget);
    gtk_widget_hide (widget);

    widget = gtk_spinner_new ();
    gtk_spinner_start (GTK_SPINNER (widget));
    gtk_box_pack_start (GTK_BOX (container), widget, FALSE, FALSE, 3);
    proxy->priv->spinner = g_object_ref (widget);
    gtk_widget_show (widget);

    widget = gtk_label_new (NULL);
    gtk_label_set_ellipsize (GTK_LABEL (widget), PANGO_ELLIPSIZE_END);
    gtk_misc_set_alignment (GTK_MISC (widget), 0.0, 0.5);
    gtk_box_pack_start (GTK_BOX (container), widget, TRUE, TRUE, 0);
    proxy->priv->label = g_object_ref (widget);
    gtk_widget_show (widget);

    widget = gtk_button_new ();
    gtk_button_set_image (
        GTK_BUTTON (widget), gtk_image_new_from_stock (
        GTK_STOCK_STOP, GTK_ICON_SIZE_MENU));
    gtk_button_set_relief (GTK_BUTTON (widget), GTK_RELIEF_NONE);
    gtk_box_pack_start (GTK_BOX (container), widget, FALSE, FALSE, 0);
    gtk_widget_set_tooltip_text (widget, _("Cancel"));
    proxy->priv->cancel = g_object_ref (widget);
    gtk_widget_show (widget);
}

GtkWidget *
e_activity_proxy_new (EActivity *activity)
{
    g_return_val_if_fail (E_IS_ACTIVITY (activity), NULL);

    return g_object_new (
        E_TYPE_ACTIVITY_PROXY,
        "activity", activity, NULL);
}

EActivity *
e_activity_proxy_get_activity (EActivityProxy *proxy)
{
    g_return_val_if_fail (E_IS_ACTIVITY_PROXY (proxy), NULL);

    return proxy->priv->activity;
}