001: /*
002: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
003: *
004: * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
005: *
006: * The contents of this file are subject to the terms of either the GNU
007: * General Public License Version 2 only ("GPL") or the Common
008: * Development and Distribution License("CDDL") (collectively, the
009: * "License"). You may not use this file except in compliance with the
010: * License. You can obtain a copy of the License at
011: * http://www.netbeans.org/cddl-gplv2.html
012: * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
013: * specific language governing permissions and limitations under the
014: * License. When distributing the software, include this License Header
015: * Notice in each file and include the License file at
016: * nbbuild/licenses/CDDL-GPL-2-CP. Sun designates this
017: * particular file as subject to the "Classpath" exception as provided
018: * by Sun in the GPL Version 2 section of the License file that
019: * accompanied this code. If applicable, add the following below the
020: * License Header, with the fields enclosed by brackets [] replaced by
021: * your own identifying information:
022: * "Portions Copyrighted [year] [name of copyright owner]"
023: *
024: * Contributor(s):
025: *
026: * The Original Software is NetBeans. The Initial Developer of the Original
027: * Software is Sun Microsystems, Inc. Portions Copyright 1997-2007 Sun
028: * Microsystems, Inc. All Rights Reserved.
029: *
030: * If you wish your version of this file to be governed by only the CDDL
031: * or only the GPL Version 2, indicate your decision by adding
032: * "[Contributor] elects to include this software in this distribution
033: * under the [CDDL or GPL Version 2] license." If you do not indicate a
034: * single choice of license, a recipient has the option to distribute
035: * your version of this file under either the CDDL, the GPL Version 2 or
036: * to extend the choice of license to its licensees as provided above.
037: * However, if you add GPL Version 2 code and therefore, elected the GPL
038: * Version 2 license, then the option applies only if the new code is
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040: */
041: package org.netbeans.modules.visual.action;
042:
043: import org.netbeans.api.visual.action.MoveControlPointProvider;
044: import org.netbeans.api.visual.widget.ConnectionWidget;
045:
046: import java.awt.*;
047: import java.util.ArrayList;
048:
049: /**
050: * @author David Kaspar
051: */
052: public final class OrthogonalMoveControlPointProvider implements
053: MoveControlPointProvider {
054:
055: public java.util.List<Point> locationSuggested(
056: ConnectionWidget connectionWidget, int index,
057: Point suggestedLocation) {
058: java.util.List<Point> controlPoints = connectionWidget
059: .getControlPoints();
060: int last = controlPoints.size() - 1;
061: if (index <= 0 || index >= last)
062: return null;
063:
064: Point pointPre = controlPoints.get(index - 1);
065: Point pointIndex = controlPoints.get(index);
066: Point pointPost = controlPoints.get(index + 1);
067:
068: boolean changeX = true;
069: boolean changeY = true;
070: if (index <= 1) {
071: Point pointFirst = controlPoints.get(0);
072: if (pointFirst.x == pointIndex.x)
073: changeX = false;
074: if (pointFirst.y == pointIndex.y)
075: changeY = false;
076: }
077: if (index >= last - 1) {
078: Point pointLast = controlPoints.get(last);
079: if (pointLast.x == pointIndex.x)
080: changeX = false;
081: if (pointLast.y == pointIndex.y)
082: changeY = false;
083: }
084:
085: Point newPointPre = new Point(pointPre);
086: Point newPointIndex = new Point(pointIndex);
087: Point newPointPost = new Point(pointPost);
088:
089: if (changeX) {
090: final int x = suggestedLocation.x;
091: if (pointPre.x == pointIndex.x)
092: newPointPre.x = x;
093: newPointIndex.x = x;
094: if (pointPost.x == pointIndex.x)
095: newPointPost.x = x;
096: }
097: if (changeY) {
098: final int y = suggestedLocation.y;
099: if (pointPre.y == pointIndex.y)
100: newPointPre.y = y;
101: newPointIndex.y = y;
102: if (pointPost.y == pointIndex.y)
103: newPointPost.y = y;
104: }
105:
106: ArrayList<Point> list = new ArrayList<Point>(controlPoints);
107: list.set(index - 1, newPointPre);
108: list.set(index, newPointIndex);
109: list.set(index + 1, newPointPost);
110: return list;
111: }
112:
113: }
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