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-rw-r--r--calendar/gui/a11y/ea-jump-button.c224
1 files changed, 224 insertions, 0 deletions
diff --git a/calendar/gui/a11y/ea-jump-button.c b/calendar/gui/a11y/ea-jump-button.c
new file mode 100644
index 0000000000..cfe8e32cbb
--- /dev/null
+++ b/calendar/gui/a11y/ea-jump-button.c
@@ -0,0 +1,224 @@
+/*
+ *
+ * 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; either
+ * version 2 of the License, or (at your option) version 3.
+ *
+ * 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with the program; if not, see <http://www.gnu.org/licenses/>
+ *
+ *
+ * Authors:
+ * Yang Wu <yang.wu@sun.com>
+ *
+ * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
+ *
+ */
+
+#include "ea-jump-button.h"
+#include "ea-calendar-helpers.h"
+#include "ea-week-view.h"
+#include "e-week-view.h"
+#include <libgnomecanvas/gnome-canvas.h>
+#include <glib/gi18n.h>
+
+static void ea_jump_button_class_init (EaJumpButtonClass *klass);
+
+static G_CONST_RETURN gchar* ea_jump_button_get_name (AtkObject *accessible);
+static G_CONST_RETURN gchar* ea_jump_button_get_description (AtkObject *accessible);
+
+/* action interface */
+static void atk_action_interface_init (AtkActionIface *iface);
+static gboolean jump_button_do_action (AtkAction *action,
+ gint i);
+static gint jump_button_get_n_actions (AtkAction *action);
+static G_CONST_RETURN gchar* jump_button_get_keybinding (AtkAction *action,
+ gint i);
+
+static gpointer parent_class = NULL;
+
+GType
+ea_jump_button_get_type (void)
+{
+ static GType type = 0;
+ AtkObjectFactory *factory;
+ GTypeQuery query;
+ GType derived_atk_type;
+
+
+ if (!type) {
+ static GTypeInfo tinfo = {
+ sizeof (EaJumpButtonClass),
+ (GBaseInitFunc) NULL, /* base init */
+ (GBaseFinalizeFunc) NULL, /* base finalize */
+ (GClassInitFunc) ea_jump_button_class_init, /* class init */
+ (GClassFinalizeFunc) NULL, /* class finalize */
+ NULL, /* class data */
+ sizeof (EaJumpButton), /* instance size */
+ 0, /* nb preallocs */
+ (GInstanceInitFunc) NULL, /* instance init */
+ NULL /* value table */
+ };
+
+ static const GInterfaceInfo atk_action_info =
+ {
+ (GInterfaceInitFunc) atk_action_interface_init,
+ (GInterfaceFinalizeFunc) NULL,
+ NULL
+ };
+
+ /*
+ * Figure out the size of the class and instance
+ * we are run-time deriving from (atk object for GNOME_TYPE_CANVAS_ITEM, in this case)
+ */
+
+ factory = atk_registry_get_factory (atk_get_default_registry (),
+ GNOME_TYPE_CANVAS_ITEM);
+ derived_atk_type = atk_object_factory_get_accessible_type (factory);
+ g_type_query (derived_atk_type, &query);
+
+ tinfo.class_size = query.class_size;
+ tinfo.instance_size = query.instance_size;
+
+ /* we inherit the component and other interfaces from GNOME_TYPE_CANVAS_ITEM */
+ type = g_type_register_static (derived_atk_type,
+ "EaJumpButton", &tinfo, 0);
+
+ g_type_add_interface_static (type, ATK_TYPE_ACTION,
+ &atk_action_info);
+ }
+
+ return type;
+}
+
+static void
+ea_jump_button_class_init (EaJumpButtonClass *klass)
+{
+ AtkObjectClass *class = ATK_OBJECT_CLASS (klass);
+
+ parent_class = g_type_class_peek_parent (klass);
+
+ class->get_name = ea_jump_button_get_name;
+ class->get_description = ea_jump_button_get_description;
+}
+
+AtkObject*
+ea_jump_button_new (GObject *obj)
+{
+ AtkObject *atk_obj = NULL;
+ GObject *target_obj;
+
+ g_return_val_if_fail (GNOME_IS_CANVAS_ITEM (obj), NULL);
+
+ target_obj = obj;
+ atk_obj = g_object_get_data (target_obj, "accessible-object");
+
+ if (!atk_obj) {
+ static AtkRole event_role = ATK_ROLE_INVALID;
+ atk_obj = ATK_OBJECT (g_object_new (EA_TYPE_JUMP_BUTTON,
+ NULL));
+ atk_object_initialize (atk_obj, target_obj);
+ if (event_role == ATK_ROLE_INVALID)
+ event_role = atk_role_register ("Jump Button");
+ atk_obj->role = event_role;
+ }
+
+ /* the registered factory for GNOME_TYPE_CANVAS_ITEM is cannot create a EaJumpbutton,
+ * we should save the EaJumpbutton object in it.
+ */
+ g_object_set_data (obj, "accessible-object", atk_obj);
+
+ return atk_obj;
+}
+
+static G_CONST_RETURN gchar*
+ea_jump_button_get_name (AtkObject *accessible)
+{
+ g_return_val_if_fail (EA_IS_JUMP_BUTTON (accessible), NULL);
+
+ if (accessible->name)
+ return accessible->name;
+ return _("Jump button");
+}
+
+static G_CONST_RETURN gchar*
+ea_jump_button_get_description (AtkObject *accessible)
+{
+ if (accessible->description)
+ return accessible->description;
+
+ return _("Click here, you can find more events.");
+}
+
+static void
+atk_action_interface_init (AtkActionIface *iface)
+{
+ g_return_if_fail (iface != NULL);
+
+ iface->do_action = jump_button_do_action;
+ iface->get_n_actions = jump_button_get_n_actions;
+ iface->get_keybinding = jump_button_get_keybinding;
+}
+
+static gboolean
+jump_button_do_action (AtkAction *action,
+ gint i)
+{
+ gboolean return_value = TRUE;
+ AtkGObjectAccessible *atk_gobj;
+ GObject *g_obj;
+ GnomeCanvasItem *item;
+ ECalendarView *cal_view;
+ EWeekView *week_view;
+
+ atk_gobj = ATK_GOBJECT_ACCESSIBLE (action);
+ g_obj = atk_gobject_accessible_get_object (atk_gobj);
+ if (!g_obj)
+ return FALSE;
+
+ item = GNOME_CANVAS_ITEM (g_obj);
+ cal_view = ea_calendar_helpers_get_cal_view_from (GNOME_CANVAS_ITEM (item));
+ week_view = E_WEEK_VIEW (cal_view);
+
+ switch (i)
+ {
+ case 0:
+ e_week_view_jump_to_button_item (week_view, GNOME_CANVAS_ITEM (item));
+ break;
+ default:
+ return_value = FALSE;
+ break;
+ }
+ return return_value;
+}
+
+static gint
+jump_button_get_n_actions (AtkAction *action)
+{
+ return 1;
+}
+
+static G_CONST_RETURN gchar*
+jump_button_get_keybinding (AtkAction *action,
+ gint i)
+{
+ gchar *return_value = NULL;
+
+ switch (i)
+ {
+ case 0:
+ {
+ return_value = "space or enter";
+ break;
+ }
+ default:
+ break;
+ }
+ return return_value;
+}