01: /*
02: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
03: *
04: * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
05: *
06: * The contents of this file are subject to the terms of either the GNU
07: * General Public License Version 2 only ("GPL") or the Common
08: * Development and Distribution License("CDDL") (collectively, the
09: * "License"). You may not use this file except in compliance with the
10: * License. You can obtain a copy of the License at
11: * http://www.netbeans.org/cddl-gplv2.html
12: * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
13: * specific language governing permissions and limitations under the
14: * License. When distributing the software, include this License Header
15: * Notice in each file and include the License file at
16: * nbbuild/licenses/CDDL-GPL-2-CP. Sun designates this
17: * particular file as subject to the "Classpath" exception as provided
18: * by Sun in the GPL Version 2 section of the License file that
19: * accompanied this code. If applicable, add the following below the
20: * License Header, with the fields enclosed by brackets [] replaced by
21: * your own identifying information:
22: * "Portions Copyrighted [year] [name of copyright owner]"
23: *
24: * Contributor(s):
25: *
26: * The Original Software is NetBeans. The Initial Developer of the Original
27: * Software is Sun Microsystems, Inc. Portions Copyright 1997-2007 Sun
28: * Microsystems, Inc. All Rights Reserved.
29: *
30: * If you wish your version of this file to be governed by only the CDDL
31: * or only the GPL Version 2, indicate your decision by adding
32: * "[Contributor] elects to include this software in this distribution
33: * under the [CDDL or GPL Version 2] license." If you do not indicate a
34: * single choice of license, a recipient has the option to distribute
35: * your version of this file under either the CDDL, the GPL Version 2 or
36: * to extend the choice of license to its licensees as provided above.
37: * However, if you add GPL Version 2 code and therefore, elected the GPL
38: * Version 2 license, then the option applies only if the new code is
39: * made subject to such option by the copyright holder.
40: */
41: package org.netbeans.api.visual.widget;
42:
43: import java.awt.*;
44:
45: /**
46: * The layer widget represents a transparent widget which functionality is similar to JGlassPane.
47: * The layer widget is used for speed optimalization too since it is not repainted when the widget is re-layout.
48: * <p>
49: * It can be used widgets organization. A scene usually has layer widgets directly underneath.
50: * E.g. each layer widget is used different purpose:
51: * background for widgets on background,
52: * main layer for node widgets,
53: * connection layer for edge widgets,
54: * interraction layer for temporary widgets created/used by actions.
55: *
56: * @author David Kaspar
57: */
58: public class LayerWidget extends Widget {
59:
60: /**
61: * Creates a layer widget.
62: * @param scene the scene
63: */
64: public LayerWidget(Scene scene) {
65: super (scene);
66: }
67:
68: /**
69: * Returns whether a specified local location is part of the layer widget.
70: * @param localLocation the local location
71: * @return always false
72: */
73: public boolean isHitAt(Point localLocation) {
74: return false;
75: }
76:
77: /**
78: * Returns whether the layer widget requires to repainted after revalidation.
79: * @return always false
80: */
81: protected boolean isRepaintRequiredForRevalidating() {
82: return false;
83: }
84:
85: void layout(boolean fullValidation) {
86: super.layout(fullValidation);
87: resolveBounds(getPreferredLocation(), null);
88: justify();
89: }
90:
91: }
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