2001-04-29  Michael Natterer  <mitch@gimp.org>

	* app/widgets/gimpcontainerview.[ch]: added virtual method
	context_item() which works like select_item() and activate_item()
	and a function to trigger the signal from subclasses (marked as
	"protected").

	* app/widgets/gimpcontainerlistview.c: invoke context_item() on
	right click.

	* app/widgets/gimpdrawablelistview.[ch]: implement context_item()
	and show a context menu. The functions to show the menu as well as
	functions to create a new drawable and to edit it's attriutes must
	be passed to the constructor now.

	* app/gui/channels-commands.[ch]
	* app/gui/layers-commands.[ch]: added functions which show the
	layers and channels context menus. No accelerators supported yet.
	Auto-destroy all dialogs when their drawable is removed from the
	image.

	* app/gui/dialogs-constructors.c: changed the calls to
	gimp_drawable_list_view_new() accordingly.

	* app/gui/menus.c
	* app/gui/test-commands.[ch]: removed some test dialogs.