1 files changed, 156 insertions, 0 deletions
diff --git a/calendar/gui/ea-calendar-helpers.c b/calendar/gui/ea-calendar-helpers.c
new file mode 100644
index 0000000000..f07cdfa086
--- /dev/null
+++ b/calendar/gui/ea-calendar-helpers.c
@@ -0,0 +1,156 @@
+/*
+ *
+ * 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;
+}