path: root/e-util/e-preview-pane.c

/*
 * e-preview-pane.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.
 *
 * 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 Lesser General Public License
 * along with this program; if not, see <http://www.gnu.org/licenses/>.
 *
 */

#include "e-preview-pane.h"

#include <gdk/gdkkeysyms.h>

#include "e-alert-bar.h"
#include "e-alert-dialog.h"
#include "e-alert-sink.h"

#define E_PREVIEW_PANE_GET_PRIVATE(obj) \
    (G_TYPE_INSTANCE_GET_PRIVATE \
    ((obj), E_TYPE_PREVIEW_PANE, EPreviewPanePrivate))

struct _EPreviewPanePrivate {
    GtkWidget *alert_bar;
    GtkWidget *web_view;
    GtkWidget *search_bar;

    gulong web_view_new_activity_handler_id;
};

enum {
    PROP_0,
    PROP_SEARCH_BAR,
    PROP_WEB_VIEW
};

enum {
    SHOW_SEARCH_BAR,
    LAST_SIGNAL
};

static guint signals[LAST_SIGNAL];

/* Forward Declarations */
static void e_preview_pane_alert_sink_init
                    (EAlertSinkInterface *iface);

G_DEFINE_TYPE_WITH_CODE (
    EPreviewPane,
    e_preview_pane,
    GTK_TYPE_VBOX,
    G_IMPLEMENT_INTERFACE (
        E_TYPE_ALERT_SINK,
        e_preview_pane_alert_sink_init))

static void
preview_pane_web_view_new_activity_cb (EWebView *web_view,
                                       EActivity *activity,
                                       EPreviewPane *preview_pane)
{
    e_activity_set_alert_sink (activity, E_ALERT_SINK (preview_pane));
}

static void
preview_pane_set_web_view (EPreviewPane *preview_pane,
                           EWebView *web_view)
{
    gulong handler_id;

    g_return_if_fail (E_IS_WEB_VIEW (web_view));
    g_return_if_fail (preview_pane->priv->web_view == NULL);

    preview_pane->priv->web_view = g_object_ref_sink (web_view);

    handler_id = g_signal_connect (
        web_view, "new-activity",
        G_CALLBACK (preview_pane_web_view_new_activity_cb),
        preview_pane);
    preview_pane->priv->web_view_new_activity_handler_id = handler_id;
}

static void
preview_pane_set_property (GObject *object,
                           guint property_id,
                           const GValue *value,
                           GParamSpec *pspec)
{
    switch (property_id) {
        case PROP_WEB_VIEW:
            preview_pane_set_web_view (
                E_PREVIEW_PANE (object),
                g_value_get_object (value));
            return;
    }

    G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}

static void
preview_pane_get_property (GObject *object,
                           guint property_id,
                           GValue *value,
                           GParamSpec *pspec)
{
    switch (property_id) {
        case PROP_SEARCH_BAR:
            g_value_set_object (
                value, e_preview_pane_get_search_bar (
                E_PREVIEW_PANE (object)));
            return;

        case PROP_WEB_VIEW:
            g_value_set_object (
                value, e_preview_pane_get_web_view (
                E_PREVIEW_PANE (object)));
            return;
    }

    G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}

static void
preview_pane_dispose (GObject *object)
{
    EPreviewPanePrivate *priv;

    priv = E_PREVIEW_PANE_GET_PRIVATE (object);

    if (priv->web_view_new_activity_handler_id > 0) {
        g_signal_handler_disconnect (
            priv->web_view,
            priv->web_view_new_activity_handler_id);
        priv->web_view_new_activity_handler_id = 0;
    }

    g_clear_object (&priv->alert_bar);
    g_clear_object (&priv->search_bar);
    g_clear_object (&priv->web_view);

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

static void
preview_pane_constructed (GObject *object)
{
    EPreviewPanePrivate *priv;
    GtkWidget *widget;

    priv = E_PREVIEW_PANE_GET_PRIVATE (object);

    widget = e_alert_bar_new ();
    gtk_box_pack_start (GTK_BOX (object), widget, FALSE, FALSE, 0);
    priv->alert_bar = g_object_ref (widget);
    /* EAlertBar controls its own visibility. */

    widget = gtk_scrolled_window_new (NULL, NULL);
    gtk_scrolled_window_set_shadow_type (
        GTK_SCROLLED_WINDOW (widget), GTK_SHADOW_IN);
    gtk_box_pack_start (GTK_BOX (object), widget, TRUE, TRUE, 0);
    gtk_container_add (GTK_CONTAINER (widget), priv->web_view);
    gtk_widget_show (widget);
    gtk_widget_show (priv->web_view);

    widget = e_search_bar_new (E_WEB_VIEW (priv->web_view));
    gtk_box_pack_start (GTK_BOX (object), widget, FALSE, FALSE, 0);
    priv->search_bar = g_object_ref (widget);
    gtk_widget_hide (widget);

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

static void
preview_pane_show_search_bar (EPreviewPane *preview_pane)
{
    GtkWidget *search_bar;

    search_bar = preview_pane->priv->search_bar;

    if (!gtk_widget_get_visible (search_bar))
        gtk_widget_show (search_bar);
}

static void
preview_pane_submit_alert (EAlertSink *alert_sink,
                           EAlert *alert)
{
    EPreviewPane *preview_pane;
    EAlertBar *alert_bar;
    GtkWidget *dialog;
    GtkWindow *parent;

    preview_pane = E_PREVIEW_PANE (alert_sink);
    alert_bar = E_ALERT_BAR (preview_pane->priv->alert_bar);

    switch (e_alert_get_message_type (alert)) {
        case GTK_MESSAGE_INFO:
        case GTK_MESSAGE_WARNING:
        case GTK_MESSAGE_QUESTION:
        case GTK_MESSAGE_ERROR:
            e_alert_bar_add_alert (alert_bar, alert);
            break;

        default:
            parent = GTK_WINDOW (alert_sink);
            dialog = e_alert_dialog_new (parent, alert);
            gtk_dialog_run (GTK_DIALOG (dialog));
            gtk_widget_destroy (dialog);
            break;
    }
}

static void
e_preview_pane_class_init (EPreviewPaneClass *class)
{
    GObjectClass *object_class;
    GtkBindingSet *binding_set;

    g_type_class_add_private (class, sizeof (EPreviewPanePrivate));

    object_class = G_OBJECT_CLASS (class);
    object_class->set_property = preview_pane_set_property;
    object_class->get_property = preview_pane_get_property;
    object_class->dispose = preview_pane_dispose;
    object_class->constructed = preview_pane_constructed;

    class->show_search_bar = preview_pane_show_search_bar;

    g_object_class_install_property (
        object_class,
        PROP_SEARCH_BAR,
        g_param_spec_object (
            "search-bar",
            "Search Bar",
            NULL,
            E_TYPE_SEARCH_BAR,
            G_PARAM_READABLE));

    g_object_class_install_property (
        object_class,
        PROP_WEB_VIEW,
        g_param_spec_object (
            "web-view",
            "Web View",
            NULL,
            E_TYPE_WEB_VIEW,
            G_PARAM_READWRITE |
            G_PARAM_CONSTRUCT_ONLY));

    signals[SHOW_SEARCH_BAR] = g_signal_new (
        "show-search-bar",
        G_TYPE_FROM_CLASS (class),
        G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
        G_STRUCT_OFFSET (EPreviewPaneClass, show_search_bar),
        NULL, NULL,
        g_cclosure_marshal_VOID__VOID,
        G_TYPE_NONE, 0);

    binding_set = gtk_binding_set_by_class (class);

    gtk_binding_entry_add_signal (
        binding_set, GDK_KEY_f,
        GDK_SHIFT_MASK | GDK_CONTROL_MASK,
        "show-search-bar", 0);
}

static void
e_preview_pane_alert_sink_init (EAlertSinkInterface *iface)
{
    iface->submit_alert = preview_pane_submit_alert;
}

static void
e_preview_pane_init (EPreviewPane *preview_pane)
{
    preview_pane->priv = E_PREVIEW_PANE_GET_PRIVATE (preview_pane);

    gtk_box_set_spacing (GTK_BOX (preview_pane), 1);
}

GtkWidget *
e_preview_pane_new (EWebView *web_view)
{
    g_return_val_if_fail (E_IS_WEB_VIEW (web_view), NULL);

    return g_object_new (
        E_TYPE_PREVIEW_PANE,
        "web-view", web_view, NULL);
}

EWebView *
e_preview_pane_get_web_view (EPreviewPane *preview_pane)
{
    g_return_val_if_fail (E_IS_PREVIEW_PANE (preview_pane), NULL);

    return E_WEB_VIEW (preview_pane->priv->web_view);
}

ESearchBar *
e_preview_pane_get_search_bar (EPreviewPane *preview_pane)
{
    g_return_val_if_fail (E_IS_PREVIEW_PANE (preview_pane), NULL);

    return E_SEARCH_BAR (preview_pane->priv->search_bar);
}

void
e_preview_pane_clear_alerts (EPreviewPane *preview_pane)
{
    g_return_if_fail (E_IS_PREVIEW_PANE (preview_pane));

    e_alert_bar_clear (E_ALERT_BAR (preview_pane->priv->alert_bar));
}

void
e_preview_pane_show_search_bar (EPreviewPane *preview_pane)
{
    g_return_if_fail (E_IS_PREVIEW_PANE (preview_pane));

    g_signal_emit (preview_pane, signals[SHOW_SEARCH_BAR], 0);
}