01: //$HeadURL: https://svn.wald.intevation.org/svn/deegree/base/trunk/src/org/deegree/graphics/Layer.java $
02: /*---------------- FILE HEADER ------------------------------------------
03:
04: This file is part of deegree.
05: Copyright (C) 2001-2008 by:
06: EXSE, Department of Geography, University of Bonn
07: http://www.giub.uni-bonn.de/deegree/
08: lat/lon GmbH
09: http://www.lat-lon.de
10:
11: This library is free software; you can redistribute it and/or
12: modify it under the terms of the GNU Lesser General Public
13: License as published by the Free Software Foundation; either
14: version 2.1 of the License, or (at your option) any later version.
15:
16: This library is distributed in the hope that it will be useful,
17: but WITHOUT ANY WARRANTY; without even the implied warranty of
18: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19: Lesser General Public License for more details.
20:
21: You should have received a copy of the GNU Lesser General Public
22: License along with this library; if not, write to the Free Software
23: Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24:
25: Contact:
26:
27: Andreas Poth
28: lat/lon GmbH
29: Aennchenstr. 19
30: 53115 Bonn
31: Germany
32: E-Mail: poth@lat-lon.de
33:
34: Prof. Dr. Klaus Greve
35: Department of Geography
36: University of Bonn
37: Meckenheimer Allee 166
38: 53115 Bonn
39: Germany
40: E-Mail: greve@giub.uni-bonn.de
41:
42:
43: ---------------------------------------------------------------------------*/
44: package org.deegree.graphics;
45:
46: import org.deegree.model.crs.CoordinateSystem;
47: import org.deegree.model.spatialschema.Envelope;
48:
49: /**
50: * A Layer is a collection of <tt>Feature</tt>s or rasters building a thematic 'unit' waterways
51: * or country borders for example. <tt>Feature</tt>s or raster can be added or removed from the
52: * layer. A <tt>Feature</tt> or raster can e changed by a modul of the application using the layer
53: * because only references to <tt>Feature</tt>s or rasters are stored within a layer.
54: *
55: * <p>
56: * ------------------------------------------------------------------------
57: * </p>
58: *
59: * @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a>
60: * @version $Revision: 9340 $ $Date: 2007-12-27 04:32:12 -0800 (Thu, 27 Dec 2007) $
61: */
62:
63: public interface Layer {
64: /**
65: * returns the name of the layer
66: */
67: String getName();
68:
69: /**
70: * returns the BoundingBox (Envelope) of Layer. This is the BoundingBox of the layers data. The
71: * BoundingBox of the View maybe larger or smaler
72: */
73: Envelope getBoundingBox();
74:
75: /**
76: * returns the coordinate reference system of the MapView
77: *
78: */
79: CoordinateSystem getCoordinatesSystem();
80:
81: /**
82: * sets the coordinate reference system of the MapView. If a new crs is set all geometries of
83: * GeometryFeatures will be transformed to the new coordinate reference system.
84: *
85: */
86: void setCoordinatesSystem(CoordinateSystem crs) throws Exception;
87:
88: /**
89: * adds an eventcontroller to the MapView that's reponsible for handling events that targets the
90: * map. E.g.: zooming, panning, selecting a feature etc.
91: */
92: void addEventController(LayerEventController obj);
93:
94: /**
95: * @see Layer#addEventController(LayerEventController)
96: */
97: void removeEventController(LayerEventController obj);
98: }
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