158 lines
4.8 KiB
C
158 lines
4.8 KiB
C
/*
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* Copyright (C) 2010 Daiki Ueno <ueno@unixuser.org>
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* Copyright (C) 2010 Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public License
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* as published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*/
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/**
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* SECTION:eek-container
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* @short_description: Base class of a keyboard container
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*
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* The #EekContainerClass class represents a keyboard container, which
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* shall be used to implement #EekKeyboard and #EekSection.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif /* HAVE_CONFIG_H */
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#include "eek-container.h"
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enum {
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CHILD_ADDED,
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CHILD_REMOVED,
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LAST_SIGNAL
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};
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static guint signals[LAST_SIGNAL] = { 0, };
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G_DEFINE_ABSTRACT_TYPE (EekContainer, eek_container, EEK_TYPE_ELEMENT);
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#define EEK_CONTAINER_GET_PRIVATE(obj) \
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(G_TYPE_INSTANCE_GET_PRIVATE ((obj), EEK_TYPE_CONTAINER, EekContainerPrivate))
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struct _EekContainerPrivate
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{
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GSList *children;
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};
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static void
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eek_container_real_add_child (EekContainer *self,
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EekElement *child)
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{
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EekContainerPrivate *priv = EEK_CONTAINER_GET_PRIVATE(self);
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g_return_if_fail (EEK_IS_ELEMENT(child));
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g_object_ref (child);
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priv->children = g_slist_prepend (priv->children, child);
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}
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static void
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eek_container_real_remove_child (EekContainer *self,
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EekElement *child)
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{
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EekContainerPrivate *priv = EEK_CONTAINER_GET_PRIVATE(self);
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GSList *head;
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g_return_if_fail (EEK_IS_ELEMENT(child));
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head = g_slist_find (priv->children, child);
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g_return_if_fail (head);
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g_object_unref (child);
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priv->children = g_slist_remove_link (priv->children, head);
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}
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static void
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eek_container_real_foreach_child (EekContainer *self,
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EekCallback callback,
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gpointer user_data)
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{
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EekContainerPrivate *priv = EEK_CONTAINER_GET_PRIVATE(self);
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GSList *head;
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for (head = priv->children; head; head = g_slist_next (head))
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(*callback) (EEK_ELEMENT(head->data), user_data);
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}
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static void
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eek_container_finalize (GObject *object)
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{
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EekContainerPrivate *priv = EEK_CONTAINER_GET_PRIVATE(object);
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GSList *head;
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for (head = priv->children; head; head = g_slist_next (head))
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g_object_unref (head->data);
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g_slist_free (priv->children);
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G_OBJECT_CLASS(eek_container_parent_class)->finalize (object);
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}
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static void
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eek_container_class_init (EekContainerClass *klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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g_type_class_add_private (gobject_class,
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sizeof (EekContainerPrivate));
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klass->add_child = eek_container_real_add_child;
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klass->remove_child = eek_container_real_remove_child;
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klass->foreach_child = eek_container_real_foreach_child;
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gobject_class->finalize = eek_container_finalize;
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signals[CHILD_ADDED] =
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g_signal_new ("child-added",
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G_TYPE_FROM_CLASS(gobject_class),
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G_SIGNAL_RUN_FIRST,
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G_STRUCT_OFFSET(EekContainerClass, child_added),
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NULL, NULL,
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g_cclosure_marshal_VOID__OBJECT,
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G_TYPE_NONE, 1,
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EEK_TYPE_ELEMENT);
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signals[CHILD_REMOVED] =
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g_signal_new ("child-removed",
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G_TYPE_FROM_CLASS(gobject_class),
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G_SIGNAL_RUN_FIRST,
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G_STRUCT_OFFSET(EekContainerClass, child_removed),
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NULL,
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NULL,
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g_cclosure_marshal_VOID__OBJECT,
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G_TYPE_NONE, 1,
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EEK_TYPE_ELEMENT);
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}
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static void
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eek_container_init (EekContainer *self)
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{
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EekContainerPrivate *priv;
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priv = self->priv = EEK_CONTAINER_GET_PRIVATE(self);
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priv->children = NULL;
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}
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void
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eek_container_foreach_child (EekContainer *container,
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EekCallback callback,
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gpointer user_data)
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{
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g_return_if_fail (EEK_IS_CONTAINER(container));
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EEK_CONTAINER_GET_CLASS(container)->foreach_child (container,
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callback,
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user_data);
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}
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