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/*
 * e-url-entry.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/>.
 *
 */

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

#include "e-url-entry.h"

#include <gtk/gtk.h>
#include <glib/gi18n.h>

#include "e-misc-utils.h"

#define E_URL_ENTRY_GET_PRIVATE(obj) \
    (G_TYPE_INSTANCE_GET_PRIVATE \
    ((obj), E_TYPE_URL_ENTRY, EUrlEntryPrivate))

#define ICON_POSITION GTK_ENTRY_ICON_SECONDARY

G_DEFINE_TYPE (
    EUrlEntry,
    e_url_entry,
    GTK_TYPE_ENTRY)

static gboolean
url_entry_text_to_sensitive (GBinding *binding,
                             const GValue *source_value,
                             GValue *target_value,
                             gpointer user_data)
{
    const gchar *text;
    gboolean sensitive = FALSE;

    text = g_value_get_string (source_value);

    if (text != NULL) {
        gchar *scheme;

        /* Skip leading whitespace. */
        while (g_ascii_isspace (*text))
            text++;

        scheme = g_uri_parse_scheme (text);
        sensitive = (scheme != NULL);
        g_free (scheme);
    }

    g_value_set_boolean (target_value, sensitive);

    return TRUE;
}

static void
url_entry_icon_release_cb (GtkEntry *entry,
                           GtkEntryIconPosition icon_position,
                           GdkEvent *event)
{
    gpointer toplevel;

    toplevel = gtk_widget_get_toplevel (GTK_WIDGET (entry));
    toplevel = gtk_widget_is_toplevel (toplevel) ? toplevel : NULL;

    if (icon_position == ICON_POSITION) {
        const gchar *text;

        text = gtk_entry_get_text (entry);
        g_return_if_fail (text != NULL);

        /* Skip leading whitespace. */
        while (g_ascii_isspace (*text))
            text++;

        e_show_uri (toplevel, text);
    }
}

static void
e_url_entry_class_init (EUrlEntryClass *class)
{
}

static void
e_url_entry_init (EUrlEntry *url_entry)
{
    GtkEntry *entry;

    entry = GTK_ENTRY (url_entry);

    gtk_entry_set_icon_from_icon_name (
        entry, ICON_POSITION, "go-jump");

    gtk_entry_set_icon_tooltip_text (
        entry, ICON_POSITION, _("Click here to open the URL"));

    gtk_entry_set_placeholder_text (entry, _("Enter a URL here"));

    /* XXX GtkEntryClass has no "icon_release" method pointer to
     *     override, so instead we have to connect to the signal. */
    g_signal_connect (
        url_entry, "icon-release",
        G_CALLBACK (url_entry_icon_release_cb), NULL);

    g_object_bind_property_full (
        url_entry, "text",
        url_entry, "secondary-icon-sensitive",
        G_BINDING_SYNC_CREATE,
        url_entry_text_to_sensitive,
        (GBindingTransformFunc) NULL,
        NULL, (GDestroyNotify) NULL);
}

GtkWidget *
e_url_entry_new (void)
{
    return g_object_new (E_TYPE_URL_ENTRY, NULL);
}