diff options
Diffstat (limited to 'calendar/gui/a11y/ea-jump-button.c')
| -rw-r--r-- | calendar/gui/a11y/ea-jump-button.c | 224 |
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; +} |