2001-05-03  Michael Natterer  <mitch@gimp.org>

	* app/app_procs.c: don't #include "gui/color-select.h"

	* app/disp_callbacks.[ch]: renamed gdisplay_drop_viewable() to
	gdisplay_drop_pattern().

	* app/gimpimage.[ch]: added new signals
	"component_visibility_changed" and "component_active_changed" and
	emit them in the resp. accessors.

	* app/interface.c: removed old GimpPreview test code.

	* app/widgets/Makefile.am
	* app/apptypes.h
	* app/widgets/gimpchannellistview.[ch]
	* app/widgets/gimpcomponentlistitem.[ch]: new (unfinished) widgets.

	* app/widgets/gimpdockbook.c: switch to the right-clicked notebook
	page before showing the menu.

	* app/widgets/gimpdrawablelistitem.[ch]: removed the protected
	functions which make the toggle buttons look nicer...

	* app/widgets/gimplistitem.[ch]: ...and added them here.

	* app/widgets/gimpdrawablelistview.[ch]: virtualized set_image()
	so subclasses can properly (dis)connect on image change.

	* app/widgets/gimpdrawablepreview.c
	* app/widgets/gimpimagepreview.[ch]: removed the calc_size()
	functions which calculate the preview's aspect ratio...

	* app/widgets/gimppreview.[ch]: ...and added then here as
	protected functions.

	* app/widgets/gimplayerlistitem.c: flush displays after changing
	the layer mask's "apply" or "show" state.