a11y: new EvPageAccessible

Basic skeleton for a new accessible class, that represents
each individual page.

https://bugzilla.gnome.org/show_bug.cgi?id=724965

origin commit:
https://git.gnome.org/browse/evince/commit/?h=gnome-3-14&id=c489d3f

1 files changed, 166 insertions, 0 deletions

diff --git a/libview/ev-page-accessible.c b/libview/ev-page-accessible.c
new file mode 100644
index 00000000..83bb80d8
--- /dev/null
+++ b/libview/ev-page-accessible.c
@@ -0,0 +1,166 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */
+/* this file is part of atril, a mate document viewer
+ *
+ * Copyright (C) 2014 Igalia S.L.
+ *
+ * Atril is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * Atril 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 General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * Author: Alejandro Piñeiro Iglesias <[email protected]>
+ */
+
+#include <config.h>
+
+#include "ev-page-accessible.h"
+
+struct _EvPageAccessiblePrivate {
+        EvViewAccessible *view_accessible;
+	gint              page;
+};
+
+enum {
+	PROP_0,
+	PROP_VIEW_ACCESSIBLE,
+	PROP_PAGE,
+};
+
+
+G_DEFINE_TYPE (EvPageAccessible, ev_page_accessible, ATK_TYPE_OBJECT)
+
+gint
+ev_page_accessible_get_page (EvPageAccessible *page_accessible)
+{
+	g_return_val_if_fail (EV_IS_PAGE_ACCESSIBLE (page_accessible), -1);
+
+	return page_accessible->priv->page;
+}
+
+EvViewAccessible *
+ev_page_accessible_get_view_accessible (EvPageAccessible *page_accessible)
+{
+	g_return_val_if_fail (EV_IS_PAGE_ACCESSIBLE (page_accessible), NULL);
+
+	return page_accessible->priv->view_accessible;
+}
+
+static AtkObject *
+ev_page_accessible_get_parent (AtkObject *obj)
+{
+	EvPageAccessible *self;
+
+	g_return_val_if_fail (EV_IS_PAGE_ACCESSIBLE (obj), NULL);
+
+	self = EV_PAGE_ACCESSIBLE (obj);
+
+	return ATK_OBJECT (self->priv->view_accessible);
+}
+
+static void
+ev_page_accessible_set_property (GObject      *object,
+				 guint         prop_id,
+				 const GValue *value,
+				 GParamSpec   *pspec)
+{
+	EvPageAccessible *accessible = EV_PAGE_ACCESSIBLE (object);
+
+	switch (prop_id) {
+	case PROP_VIEW_ACCESSIBLE:
+		accessible->priv->view_accessible = EV_VIEW_ACCESSIBLE (g_value_get_object (value));
+		break;
+	case PROP_PAGE:
+		accessible->priv->page = g_value_get_int (value);
+		break;
+	default:
+		G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+	}
+}
+
+static void
+ev_page_accessible_get_property (GObject    *object,
+				 guint       prop_id,
+				 GValue     *value,
+				 GParamSpec *pspec)
+{
+	EvPageAccessible *accessible = EV_PAGE_ACCESSIBLE (object);
+
+	switch (prop_id) {
+	case PROP_VIEW_ACCESSIBLE:
+		g_value_set_object (value, ev_page_accessible_get_view_accessible (accessible));
+		break;
+	case PROP_PAGE:
+		g_value_set_int (value, ev_page_accessible_get_page (accessible));
+		break;
+	default:
+		G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+	}
+}
+
+static void
+ev_page_accessible_class_init (EvPageAccessibleClass *klass)
+{
+	GObjectClass   *g_object_class = G_OBJECT_CLASS (klass);
+	AtkObjectClass *atk_class = ATK_OBJECT_CLASS (klass);
+
+        g_type_class_add_private (klass, sizeof (EvPageAccessiblePrivate));
+
+	atk_class->get_parent  = ev_page_accessible_get_parent;
+
+	g_object_class->get_property = ev_page_accessible_get_property;
+	g_object_class->set_property = ev_page_accessible_set_property;
+
+	g_object_class_install_property (g_object_class,
+					 PROP_VIEW_ACCESSIBLE,
+					 g_param_spec_object ("view-accessible",
+							      "View Accessible",
+							      "The view accessible associated to this page",
+							      EV_TYPE_VIEW_ACCESSIBLE,
+							      G_PARAM_READWRITE |
+							      G_PARAM_CONSTRUCT_ONLY |
+                                                              G_PARAM_STATIC_STRINGS));
+	g_object_class_install_property (g_object_class,
+					 PROP_PAGE,
+					 g_param_spec_int ("page",
+							   "Page",
+							   "Page index this page represents",
+							   -1, G_MAXINT, -1,
+							   G_PARAM_READWRITE |
+							   G_PARAM_CONSTRUCT_ONLY |
+                                                           G_PARAM_STATIC_STRINGS));
+
+}
+
+static void
+ev_page_accessible_init (EvPageAccessible *page)
+{
+	atk_object_set_role (ATK_OBJECT (page), ATK_ROLE_PAGE);
+
+        page->priv = G_TYPE_INSTANCE_GET_PRIVATE (page, EV_TYPE_PAGE_ACCESSIBLE, EvPageAccessiblePrivate);
+}
+
+EvPageAccessible *
+ev_page_accessible_new (EvViewAccessible *view_accessible,
+                        gint              page)
+{
+        EvPageAccessible *atk_page;
+
+	g_return_val_if_fail (EV_IS_VIEW_ACCESSIBLE (view_accessible), NULL);
+	g_return_val_if_fail (page >= 0, NULL);
+
+        atk_page = g_object_new (EV_TYPE_PAGE_ACCESSIBLE,
+				 "view-accessible", view_accessible,
+				 "page", page,
+				 NULL);
+
+        return EV_PAGE_ACCESSIBLE (atk_page);
+}