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/*
* Copyright © 2018 Benjamin Otte
*
* This library 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 2.1 of the License, or (at your option) any later version.
*
* This library 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 this library. If not, see <http://www.gnu.org/licenses/>.
*
* Authors: Benjamin Otte <otte@gnome.org>
*/
#include "config.h"
#include "gtklistitemwidgetprivate.h"
#include "gtkbinlayout.h"
#include "gtkeventcontrollermotion.h"
#include "gtkgestureclick.h"
#include "gtklistitemfactoryprivate.h"
#include "gtklistitemprivate.h"
#include "gtklistbaseprivate.h"
#include "gtkwidget.h"
#include "gtkwidgetprivate.h"
G_DEFINE_TYPE (GtkListItemWidget, gtk_list_item_widget, GTK_TYPE_LIST_FACTORY_WIDGET)
static gboolean
gtk_list_item_widget_focus (GtkWidget *widget,
GtkDirectionType direction)
{
GtkWidget *child = gtk_widget_get_first_child (widget);
if (gtk_widget_get_focus_child (widget))
{
/* focus is in the child */
if (direction == GTK_DIR_TAB_BACKWARD)
return gtk_widget_grab_focus_self (widget);
else
return FALSE;
}
else if (gtk_widget_is_focus (widget))
{
/* The widget has focus */
if (direction == GTK_DIR_TAB_FORWARD)
{
if (child)
return gtk_widget_child_focus (child, direction);
}
return FALSE;
}
else
{
/* focus coming in from the outside */
if (direction == GTK_DIR_TAB_BACKWARD)
{
if (child &&
gtk_widget_child_focus (child, direction))
return TRUE;
return gtk_widget_grab_focus_self (widget);
}
else
{
if (gtk_widget_grab_focus_self (widget))
return TRUE;
if (child &&
gtk_widget_child_focus (child, direction))
return TRUE;
return FALSE;
}
}
}
static gboolean
gtk_list_item_widget_grab_focus (GtkWidget *widget)
{
GtkWidget *child;
if (GTK_WIDGET_CLASS (gtk_list_item_widget_parent_class)->grab_focus (widget))
return TRUE;
child = gtk_widget_get_first_child (widget);
if (child && gtk_widget_grab_focus (child))
return TRUE;
return FALSE;
}
static gpointer
gtk_list_item_widget_create_object (GtkListFactoryWidget *fw)
{
return gtk_list_item_new ();
}
static void
gtk_list_item_widget_setup_object (GtkListFactoryWidget *fw,
gpointer object)
{
GtkListItemWidget *self = GTK_LIST_ITEM_WIDGET (fw);
GtkListItem *list_item = object;
GTK_LIST_FACTORY_WIDGET_CLASS (gtk_list_item_widget_parent_class)->setup_object (fw, object);
list_item->owner = self;
gtk_list_item_widget_set_child (self, list_item->child);
gtk_list_factory_widget_set_activatable (fw, list_item->activatable);
gtk_list_factory_widget_set_selectable (fw, list_item->selectable);
gtk_widget_set_focusable (GTK_WIDGET (self), list_item->focusable);
gtk_list_item_do_notify (list_item,
gtk_list_item_base_get_item (GTK_LIST_ITEM_BASE (self)) != NULL,
gtk_list_item_base_get_position (GTK_LIST_ITEM_BASE (self)) != GTK_INVALID_LIST_POSITION,
gtk_list_item_base_get_selected (GTK_LIST_ITEM_BASE (self)));
}
static void
gtk_list_item_widget_teardown_object (GtkListFactoryWidget *fw,
gpointer object)
{
GtkListItemWidget *self = GTK_LIST_ITEM_WIDGET (fw);
GtkListItem *list_item = object;
GTK_LIST_FACTORY_WIDGET_CLASS (gtk_list_item_widget_parent_class)->teardown_object (fw, object);
list_item->owner = NULL;
gtk_list_item_widget_set_child (self, NULL);
gtk_list_factory_widget_set_activatable (fw, FALSE);
gtk_list_factory_widget_set_selectable (fw, FALSE);
gtk_widget_set_focusable (GTK_WIDGET (self), TRUE);
gtk_list_item_do_notify (list_item,
gtk_list_item_base_get_item (GTK_LIST_ITEM_BASE (self)) != NULL,
gtk_list_item_base_get_position (GTK_LIST_ITEM_BASE (self)) != GTK_INVALID_LIST_POSITION,
gtk_list_item_base_get_selected (GTK_LIST_ITEM_BASE (self)));
/* FIXME: This is technically not correct, the child is user code, isn't it? */
gtk_list_item_set_child (list_item, NULL);
}
static void
gtk_list_item_widget_update_object (GtkListFactoryWidget *fw,
gpointer object,
guint position,
gpointer item,
gboolean selected)
{
GtkListItemWidget *self = GTK_LIST_ITEM_WIDGET (fw);
GtkListItemBase *base = GTK_LIST_ITEM_BASE (self);
GtkListItem *list_item = object;
/* Track notify manually instead of freeze/thaw_notify for performance reasons. */
gboolean notify_item = FALSE, notify_position = FALSE, notify_selected = FALSE;
/* FIXME: It's kinda evil to notify external objects from here... */
notify_item = gtk_list_item_base_get_item (base) != item;
notify_position = gtk_list_item_base_get_position (base) != position;
notify_selected = gtk_list_item_base_get_selected (base) != selected;
GTK_LIST_FACTORY_WIDGET_CLASS (gtk_list_item_widget_parent_class)->update_object (fw,
object,
position,
item,
selected);
if (list_item)
gtk_list_item_do_notify (list_item, notify_item, notify_position, notify_selected);
}
static void
gtk_list_item_widget_class_init (GtkListItemWidgetClass *klass)
{
GtkListFactoryWidgetClass *factory_class = GTK_LIST_FACTORY_WIDGET_CLASS (klass);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
factory_class->create_object = gtk_list_item_widget_create_object;
factory_class->setup_object = gtk_list_item_widget_setup_object;
factory_class->update_object = gtk_list_item_widget_update_object;
factory_class->teardown_object = gtk_list_item_widget_teardown_object;
widget_class->focus = gtk_list_item_widget_focus;
widget_class->grab_focus = gtk_list_item_widget_grab_focus;
/* This gets overwritten by gtk_list_item_widget_new() but better safe than sorry */
gtk_widget_class_set_css_name (widget_class, I_("row"));
gtk_widget_class_set_layout_manager_type (widget_class, GTK_TYPE_BIN_LAYOUT);
}
static void
gtk_list_item_widget_init (GtkListItemWidget *self)
{
gtk_widget_set_focusable (GTK_WIDGET (self), TRUE);
}
GtkWidget *
gtk_list_item_widget_new (GtkListItemFactory *factory,
const char *css_name,
GtkAccessibleRole role)
{
g_return_val_if_fail (css_name != NULL, NULL);
return g_object_new (GTK_TYPE_LIST_ITEM_WIDGET,
"css-name", css_name,
"accessible-role", role,
"factory", factory,
NULL);
}
void
gtk_list_item_widget_set_child (GtkListItemWidget *self,
GtkWidget *child)
{
GtkWidget *cur_child = gtk_widget_get_first_child (GTK_WIDGET (self));
if (cur_child == child)
return;
g_clear_pointer (&cur_child, gtk_widget_unparent);
if (child)
gtk_widget_set_parent (child, GTK_WIDGET (self));
}
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