1999-09-26  Miguel de Icaza  <miguel@gnu.org>

	* src/sheet-object.c (sheet_button_release): Load content from
	bonobo objects here.
	(sheet_view_object_unrealize): Keep the bookkeeping of realized
	objects in the GnomeCanvasItem destroy handler.

	* src/sheet-object-bonobo.c (sheet_object_bonobo_load_from_file):
	New base class for SheetObjectContainer and SheetObjectBonobo

	* src/sheet-object-container.c: Redid for reusing the new
	hierarchy SheetObjectBonobo hierarchy.

1999-09-25  Miguel de Icaza  <miguel@gnu.org>

	* src/sheet-object.c (create_object): handle
	SHEET_MODE_CREATE_CANVAS_ITEM.

	* src/sheet.h (Sheet::mode_data): new field to keep per-mode data
	during the lifetime of the mode.

	* src/sheet-object-item.c: New sheet-object type.  This one is
	used for embedding Bonobo-based CanvasItems.