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/*
 * e-mail-config-import-progress-page.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/>
 *
 */

#include "e-mail-config-import-progress-page.h"

#include <config.h>
#include <glib/gi18n-lib.h>

#define E_MAIL_CONFIG_IMPORT_PROGRESS_PAGE_GET_PRIVATE(obj) \
    (G_TYPE_INSTANCE_GET_PRIVATE \
    ((obj), E_TYPE_MAIL_CONFIG_IMPORT_PROGRESS_PAGE, EMailConfigImportProgressPagePrivate))

struct _EMailConfigImportProgressPagePrivate {
    EActivity *activity;
    GtkWidget *progress_bar;   /* not referenced */
    GtkWidget *cancelled_msg;  /* not referenced */
    GtkWidget *completed_msg;  /* not referenced */
};

enum {
    PROP_0,
    PROP_ACTIVITY
};

/* Forward Declarations */
static void e_mail_config_import_progress_page_interface_init
                    (EMailConfigPageInterface *interface);

G_DEFINE_DYNAMIC_TYPE_EXTENDED (
    EMailConfigImportProgressPage,
    e_mail_config_import_progress_page,
    GTK_TYPE_BOX,
    0,
    G_IMPLEMENT_INTERFACE_DYNAMIC (
        E_TYPE_MAIL_CONFIG_PAGE,
        e_mail_config_import_progress_page_interface_init))

static gboolean
mail_config_import_progress_page_is_cancelled (GBinding *binding,
                                               const GValue *source_value,
                                               GValue *target_value,
                                               gpointer unused)
{
    EActivityState state;
    gboolean is_cancelled;

    state = g_value_get_enum (source_value);
    is_cancelled = (state == E_ACTIVITY_CANCELLED);
    g_value_set_boolean (target_value, is_cancelled);

    return TRUE;
}

static gboolean
mail_config_import_progress_page_is_completed (GBinding *binding,
                                               const GValue *source_value,
                                               GValue *target_value,
                                               gpointer unused)
{
    EActivityState state;
    gboolean is_completed;

    state = g_value_get_enum (source_value);
    is_completed = (state == E_ACTIVITY_COMPLETED);
    g_value_set_boolean (target_value, is_completed);

    return TRUE;
}

static gboolean
mail_config_import_progress_page_percent_to_fraction (GBinding *binding,
                                                      const GValue *source_value,
                                                      GValue *target_value,
                                                      gpointer unused)
{
    gdouble fraction;

    fraction = g_value_get_double (source_value) / 100.0;
    g_value_set_double (target_value, CLAMP (fraction, 0.0, 1.0));

    return TRUE;
}

static void
mail_config_import_progress_page_set_activity (EMailConfigImportProgressPage *page,
                                               EActivity *activity)
{
    g_return_if_fail (E_IS_ACTIVITY (activity));
    g_return_if_fail (page->priv->activity == NULL);

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

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

    G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}

static void
mail_config_import_progress_page_get_property (GObject *object,
                                               guint property_id,
                                               GValue *value,
                                               GParamSpec *pspec)
{
    switch (property_id) {
        case PROP_ACTIVITY:
            g_value_set_object (
                value,
                e_mail_config_import_progress_page_get_activity (
                E_MAIL_CONFIG_IMPORT_PROGRESS_PAGE (object)));
            return;
    }

    G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}

static void
mail_config_import_progress_page_dispose (GObject *object)
{
    EMailConfigImportProgressPagePrivate *priv;

    priv = E_MAIL_CONFIG_IMPORT_PROGRESS_PAGE_GET_PRIVATE (object);

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

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

static void
mail_config_import_progress_page_constructed (GObject *object)
{
    EMailConfigImportProgressPage *page;
    GtkSizeGroup *size_group;
    GtkWidget *container;
    GtkWidget *widget;
    EActivity *activity;

    page = E_MAIL_CONFIG_IMPORT_PROGRESS_PAGE (object);

    /* Chain up to parent's constructed() method. */
    G_OBJECT_CLASS (e_mail_config_import_progress_page_parent_class)->
        constructed (object);

    gtk_orientable_set_orientation (
        GTK_ORIENTABLE (page), GTK_ORIENTATION_VERTICAL);

    gtk_box_set_spacing (GTK_BOX (page), 12);

    gtk_widget_set_valign (GTK_WIDGET (page), GTK_ALIGN_CENTER);

    activity = e_mail_config_import_progress_page_get_activity (page);

    /* The activity state affects the "check-complete" result. */
    g_signal_connect_swapped (
        activity, "notify::state",
        G_CALLBACK (e_mail_config_page_changed), page);

    size_group = gtk_size_group_new (GTK_SIZE_GROUP_VERTICAL);

    /* Just a spacer. */
    widget = gtk_alignment_new (0.5, 0.0, 0.0, 0.0);
    gtk_size_group_add_widget (size_group, widget);
    gtk_box_pack_start (GTK_BOX (page), widget, TRUE, TRUE, 0);
    gtk_widget_show (widget);

    widget = gtk_progress_bar_new ();
    gtk_box_pack_start (GTK_BOX (page), widget, FALSE, FALSE, 0);
    page->priv->progress_bar = widget;  /* not referenced */
    gtk_widget_show (widget);

    g_object_bind_property (
        activity, "text",
        widget, "text",
        G_BINDING_SYNC_CREATE);

    g_object_bind_property_full (
        activity, "percent",
        widget, "fraction",
        G_BINDING_SYNC_CREATE,
        mail_config_import_progress_page_percent_to_fraction,
        NULL,
        NULL, (GDestroyNotify) NULL);

    widget = gtk_vbox_new (FALSE, 12);
    gtk_size_group_add_widget (size_group, widget);
    gtk_box_pack_start (GTK_BOX (page), widget, TRUE, TRUE, 0);
    gtk_widget_show (widget);

    container = widget;

    widget = gtk_alignment_new (0.5, 0.0, 0.0, 0.0);
    gtk_box_pack_start (GTK_BOX (container), widget, TRUE, TRUE, 0);
    page->priv->cancelled_msg = widget;  /* not referenced */

    g_object_bind_property_full (
        activity, "state",
        widget, "visible",
        G_BINDING_SYNC_CREATE,
        mail_config_import_progress_page_is_cancelled,
        NULL,
        NULL, (GDestroyNotify) NULL);

    widget = gtk_alignment_new (0.5, 0.0, 0.0, 0.0);
    gtk_box_pack_start (GTK_BOX (container), widget, TRUE, TRUE, 0);
    page->priv->completed_msg = widget;  /* not referenced */
    gtk_widget_show (widget);

    g_object_bind_property_full (
        activity, "state",
        widget, "visible",
        G_BINDING_SYNC_CREATE,
        mail_config_import_progress_page_is_completed,
        NULL,
        NULL, (GDestroyNotify) NULL);

    container = page->priv->cancelled_msg;

    widget = gtk_hbox_new (FALSE, 6);
    gtk_container_add (GTK_CONTAINER (container), widget);
    gtk_widget_show (widget);

    container = widget;

    widget = gtk_image_new_from_stock (
        GTK_STOCK_CANCEL, GTK_ICON_SIZE_MENU);
    gtk_box_pack_start (GTK_BOX (container), widget, FALSE, FALSE, 0);
    gtk_widget_show (widget);

    widget = gtk_label_new (_("Import cancelled."));
    gtk_box_pack_start (GTK_BOX (container), widget, FALSE, FALSE, 0);
    gtk_widget_show (widget);

    container = page->priv->completed_msg;

    widget = gtk_hbox_new (FALSE, 6);
    gtk_container_add (GTK_CONTAINER (container), widget);
    gtk_widget_show (widget);

    container = widget;

    widget = gtk_image_new_from_icon_name (
        "emblem-default", GTK_ICON_SIZE_MENU);
    gtk_box_pack_start (GTK_BOX (container), widget, FALSE, FALSE, 0);
    gtk_widget_show (widget);

    widget = gtk_label_new _("Import complete.");
    gtk_box_pack_start (GTK_BOX (container), widget, FALSE, FALSE, 0);
    gtk_widget_show (widget);

    g_object_unref (size_group);
}

static gboolean
mail_config_import_progress_page_check_complete (EMailConfigPage *page)
{
    EMailConfigImportProgressPagePrivate *priv;
    gboolean complete;

    priv = E_MAIL_CONFIG_IMPORT_PROGRESS_PAGE_GET_PRIVATE (page);

    switch (e_activity_get_state (priv->activity)) {
        case E_ACTIVITY_CANCELLED:
        case E_ACTIVITY_COMPLETED:
            complete = TRUE;
            break;
        default:
            complete = FALSE;
            break;
    }

    return complete;
}

static void
e_mail_config_import_progress_page_class_init (EMailConfigImportProgressPageClass *class)
{
    GObjectClass *object_class;

    g_type_class_add_private (
        class, sizeof (EMailConfigImportProgressPagePrivate));

    object_class = G_OBJECT_CLASS (class);
    object_class->set_property = mail_config_import_progress_page_set_property;
    object_class->get_property = mail_config_import_progress_page_get_property;
    object_class->dispose = mail_config_import_progress_page_dispose;
    object_class->constructed = mail_config_import_progress_page_constructed;

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

static void
e_mail_config_import_progress_page_class_finalize (EMailConfigImportProgressPageClass *class)
{
}

static void
e_mail_config_import_progress_page_interface_init (EMailConfigPageInterface *interface)
{
    /* Keep the title identical to EMailConfigImportPage
     * so it's only shown once in the assistant sidebar. */
    interface->title = _("Importing Files");
    interface->sort_order = E_MAIL_CONFIG_IMPORT_PROGRESS_PAGE_SORT_ORDER;
    interface->page_type = GTK_ASSISTANT_PAGE_PROGRESS;
    interface->check_complete = mail_config_import_progress_page_check_complete;
}

static void
e_mail_config_import_progress_page_init (EMailConfigImportProgressPage *page)
{
    page->priv = E_MAIL_CONFIG_IMPORT_PROGRESS_PAGE_GET_PRIVATE (page);
}

void
e_mail_config_import_progress_page_type_register (GTypeModule *type_module)
{
    /* XXX G_DEFINE_DYNAMIC_TYPE declares a static type registration
     *     function, so we have to wrap it with a public function in
     *     order to register types from a separate compilation unit. */
    e_mail_config_import_progress_page_register_type (type_module);
}

EMailConfigPage *
e_mail_config_import_progress_page_new (EActivity *activity)
{
    g_return_val_if_fail (E_IS_ACTIVITY (activity), NULL);

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

EActivity *
e_mail_config_import_progress_page_get_activity (EMailConfigImportProgressPage *page)
{
    g_return_val_if_fail (
        E_IS_MAIL_CONFIG_IMPORT_PROGRESS_PAGE (page), NULL);

    return page->priv->activity;
}