package votorola.s.gwt.scene; // Copyright 2011, Michael Allan.  Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Votorola Software"), to deal in the Votorola Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicence, and/or sell copies of the Votorola Software, and to permit persons to whom the Votorola Software is furnished to do so, subject to the following conditions: The preceding copyright notice and this permission notice shall be included in all copies or substantial portions of the Votorola Software. THE VOTOROLA SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE VOTOROLA SOFTWARE OR THE USE OR OTHER DEALINGS IN THE VOTOROLA SOFTWARE.

import com.google.web.bindery.event.shared.HandlerRegistration;


/** A scoping model.  It defines the filtering and bounding of maps and other scope
  * dependent views, such as the feed.  Ordinarily there is a single scoping model
  * associated with the current scene.  Scoping models need not fire scope events on
  * construction.
  *
  *     @see Scene#inScope(votorola.s.gwt.scene.feed.BiteJS)
  *     @see Scenes#scene()
  *     @see Scenes#sScopingSwitch()
  */
public interface Scoping
{

    // We might allow multiple, parallel scoping models in future.  Each scoping model
    // would be associated with a separate scene.  The combined bounding and filtering logic
    // would be OR.


   // - S c o p i n g --------------------------------------------------------------------


    /** Registers a handler to receive change events fired from this scoping model.
      *
      *     @see ScopeChangeEvent#addHandler(ScopeChangeHandler)
      */
    public HandlerRegistration addHandler( ScopeChangeHandler handler );



}