A DragTracker tool moves the set of figures defined by the drawing's selection container (= the figures presently selected).
SelectAreaTracker is a tool to select a set of figures using a rubberband.
The Subject role of the observer pattern for DrawingChangeListeners.
The standard RubberBandSelection strategy that simply selects all figures within the rubber band rectangle.
The standard selection handler contains default implementation of managing a drawing's multiple figure selection mechanism.
This package contains handlers: subordinate objects with specific implementations to be used by elements in the standard package.
Copyright 2010 Henrik Baerbak Christensen Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
From the book: Flexible, Reliable Software, © CRC Press 2010. Author: Henrik B. Christensen, Aarhus University, Denmark