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-rw-r--r--calendar/gui/a11y/ea-calendar-helpers.c156
1 files changed, 156 insertions, 0 deletions
diff --git a/calendar/gui/a11y/ea-calendar-helpers.c b/calendar/gui/a11y/ea-calendar-helpers.c
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+++ b/calendar/gui/a11y/ea-calendar-helpers.c
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+/*
+ *
+ * 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:
+ * Bolian Yin <bolian.yin@sun.com>
+ *
+ * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
+ *
+ */
+
+#include "ea-calendar-helpers.h"
+#include "ea-cal-view-event.h"
+#include "ea-jump-button.h"
+#include "e-day-view.h"
+#include "e-week-view.h"
+
+#include <text/e-text.h>
+#include <libgnomecanvas/gnome-canvas-pixbuf.h>
+
+/**
+ * ea_calendar_helpers_get_accessible_for
+ * @canvas_item: the canvas item for a event or a jump button
+ * @returns: the atk object for the canvas_item
+ *
+ **/
+AtkObject *
+ea_calendar_helpers_get_accessible_for (GnomeCanvasItem *canvas_item)
+{
+ AtkObject *atk_obj = NULL;
+ GObject *g_obj;
+
+ g_return_val_if_fail ((E_IS_TEXT (canvas_item)) || (GNOME_IS_CANVAS_ITEM (canvas_item)), NULL);;
+
+ g_obj = G_OBJECT (canvas_item);
+ /* we cannot use atk_gobject_accessible_for_object here,
+ * EaDayViewEvent/EaWeekViewEvent cannot be created by the
+ * registered facotry of E_TEXT
+ */
+ atk_obj = g_object_get_data (g_obj, "accessible-object");
+ if (!atk_obj) {
+ if (E_IS_TEXT (canvas_item)) {
+ atk_obj = ea_cal_view_event_new (g_obj);
+ }
+ else if (GNOME_IS_CANVAS_PIXBUF(canvas_item)) {
+ atk_obj = ea_jump_button_new (g_obj);
+ }
+ else
+ return NULL;
+ }
+ return atk_obj;
+}
+
+/**
+ * ea_calendar_helpers_get_view_widget_from:
+ * @canvas_item: the canvas item for a event or a jump button
+ * @returns: the cal view widget if exists
+ *
+ * Get the cal view widget contains the canvas_item.
+ *
+ **/
+ECalendarView *
+ea_calendar_helpers_get_cal_view_from (GnomeCanvasItem *canvas_item)
+{
+ GnomeCanvas *canvas;
+ GtkWidget *view_widget = NULL;
+
+ g_return_val_if_fail (canvas_item, NULL);
+ g_return_val_if_fail ((E_IS_TEXT (canvas_item)) || (GNOME_IS_CANVAS_ITEM (canvas_item)), NULL);
+
+ /* canvas_item is the e_text for the event */
+ /* canvas_item->canvas is the ECanvas for day view */
+ /* parent of canvas_item->canvas is the EDayView or EWeekView widget */
+ canvas = canvas_item->canvas;
+ view_widget = gtk_widget_get_parent (GTK_WIDGET(canvas));
+ if (!view_widget || !E_IS_CALENDAR_VIEW (view_widget))
+ return NULL;
+
+ return E_CALENDAR_VIEW (view_widget);
+}
+
+/**
+ * ea_calendar_helpers_get_cal_view_event_from
+ * @canvas_item: the cavas_item (e_text) for the event
+ * @returns: the ECalendarViewEvent
+ *
+ * Get the ECalendarViewEvent for the canvas_item.
+ *
+ **/
+ECalendarViewEvent *
+ea_calendar_helpers_get_cal_view_event_from (GnomeCanvasItem *canvas_item)
+{
+ ECalendarView *cal_view;
+ gboolean event_found;
+ ECalendarViewEvent *cal_view_event;
+
+ g_return_val_if_fail (E_IS_TEXT (canvas_item), NULL);
+
+ cal_view = ea_calendar_helpers_get_cal_view_from (canvas_item);
+
+ if (!cal_view)
+ return NULL;
+
+ if (E_IS_DAY_VIEW (cal_view)) {
+ gint event_day, event_num;
+ EDayViewEvent *day_view_event;
+ EDayView *day_view = E_DAY_VIEW (cal_view);
+ event_found = e_day_view_find_event_from_item (day_view, canvas_item,
+ &event_day, &event_num);
+ if (!event_found)
+ return NULL;
+ if (event_day == E_DAY_VIEW_LONG_EVENT) {
+ /* a long event */
+ day_view_event = &g_array_index (day_view->long_events,
+ EDayViewEvent, event_num);
+ }
+ else {
+ /* a main canvas event */
+ day_view_event = &g_array_index (day_view->events[event_day],
+ EDayViewEvent, event_num);
+ }
+ cal_view_event = (ECalendarViewEvent *) day_view_event;
+ }
+ else if (E_IS_WEEK_VIEW (cal_view)) {
+ gint event_num, span_num;
+ EWeekViewEvent *week_view_event;
+ EWeekView *week_view = E_WEEK_VIEW (cal_view);
+ event_found = e_week_view_find_event_from_item (week_view,
+ canvas_item,
+ &event_num,
+ &span_num);
+ if (!event_found)
+ return NULL;
+
+ week_view_event = &g_array_index (week_view->events, EWeekViewEvent,
+ event_num);
+
+ cal_view_event = (ECalendarViewEvent *)week_view_event;
+ }
+ else {
+ g_return_val_if_reached (NULL);
+ }
+ return cal_view_event;
+}