001: /* ====================================================================
002: * The JRefactory License, Version 1.0
003: *
004: * Copyright (c) 2001 JRefactory. All rights reserved.
005: *
006: * Redistribution and use in source and binary forms, with or without
007: * modification, are permitted provided that the following conditions
008: * are met:
009: *
010: * 1. Redistributions of source code must retain the above copyright
011: * notice, this list of conditions and the following disclaimer.
012: *
013: * 2. Redistributions in binary form must reproduce the above copyright
014: * notice, this list of conditions and the following disclaimer in
015: * the documentation and/or other materials provided with the
016: * distribution.
017: *
018: * 3. The end-user documentation included with the redistribution,
019: * if any, must include the following acknowledgment:
020: * "This product includes software developed by the
021: * JRefactory (http://www.sourceforge.org/projects/jrefactory)."
022: * Alternately, this acknowledgment may appear in the software itself,
023: * if and wherever such third-party acknowledgments normally appear.
024: *
025: * 4. The names "JRefactory" must not be used to endorse or promote
026: * products derived from this software without prior written
027: * permission. For written permission, please contact seguin@acm.org.
028: *
029: * 5. Products derived from this software may not be called "JRefactory",
030: * nor may "JRefactory" appear in their name, without prior written
031: * permission of Chris Seguin.
032: *
033: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
034: * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
035: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
036: * DISCLAIMED. IN NO EVENT SHALL THE CHRIS SEGUIN OR
037: * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
038: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
039: * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
040: * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
041: * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
042: * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
043: * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
044: * SUCH DAMAGE.
045: * ====================================================================
046: *
047: * This software consists of voluntary contributions made by many
048: * individuals on behalf of JRefactory. For more information on
049: * JRefactory, please see
050: * <http://www.sourceforge.org/projects/jrefactory>.
051: */
052: package org.acm.seguin.uml.line;
053:
054: import java.awt.Container;
055: import java.awt.Point;
056: import java.awt.event.*;
057: import javax.swing.JPanel;
058: import org.acm.seguin.uml.UMLPackage;
059:
060: /**
061: * This adapter handles dragging panels around on another panel. This is used
062: * to relocate the class images on the class diagram.
063: *
064: *@author Chris Seguin
065: *@created July 28, 1999
066: */
067: public class DragPanelAdapter implements MouseListener,
068: MouseMotionListener {
069: private EndPointPanel panel;
070: private LinedPanel parent;
071: private Point mouseStart;
072: private Point panelStart;
073:
074: /**
075: * Constructor for the DragPanelAdapter object
076: *
077: *@param initPanel Description of Parameter
078: *@param initParent Description of Parameter
079: */
080: public DragPanelAdapter(EndPointPanel initPanel,
081: LinedPanel initParent) {
082: panel = initPanel;
083: parent = initParent;
084: }
085:
086: /**
087: * Process a mouse click action
088: *
089: *@param mevt the mouse event
090: */
091: public void mouseClicked(MouseEvent mevt) {
092: boolean newState = !panel.isSelected();
093: if ((mevt.getModifiers() & MouseEvent.BUTTON1_MASK) == 0) {
094: return;
095: } else if (!mevt.isControlDown()) {
096: parent.deselectAll();
097: }
098:
099: panel.setSelected(newState);
100: }
101:
102: /**
103: * Process the mouse entering the component
104: *
105: *@param mevt the mouse event
106: */
107: public void mouseEntered(MouseEvent mevt) {
108: }
109:
110: /**
111: * Process the mouse leaving the component
112: *
113: *@param mevt the mouse event
114: */
115: public void mouseExited(MouseEvent mevt) {
116: }
117:
118: /**
119: * Process a mouse button press
120: *
121: *@param mevt the mouse event
122: */
123: public void mousePressed(MouseEvent mevt) {
124: mouseStart = mevt.getPoint();
125: panelStart = panel.getLocation(panelStart);
126: }
127:
128: /**
129: * User released the mouse button
130: *
131: *@param mevt the mouse event
132: */
133: public void mouseReleased(MouseEvent mevt) {
134: if ((mevt.getModifiers() & MouseEvent.BUTTON1_MASK) != 0) {
135: if (parent instanceof LinedPanel) {
136: ((LinedPanel) parent).drop();
137: }
138: if (parent instanceof UMLPackage) {
139: ((UMLPackage) parent).setDirty();
140: }
141: }
142: }
143:
144: /**
145: * Notifies this object that it is being dragged
146: *
147: *@param mevt The mouse object
148: */
149: public void mouseDragged(MouseEvent mevt) {
150: if ((mevt.getModifiers() & MouseEvent.BUTTON1_MASK) != 0) {
151: Point currentMouse = mevt.getPoint();
152:
153: int deltaX = currentMouse.x - mouseStart.x;
154: int deltaY = currentMouse.y - mouseStart.y;
155:
156: if (!panel.isSelected()) {
157: panel.shift(deltaX, deltaY);
158: } else {
159: parent.shift(deltaX, deltaY);
160: }
161:
162: parent.repaint();
163: }
164: }
165:
166: /**
167: * What to do when the mouse moves. Nothing.
168: *
169: *@param mevt the mouse event
170: */
171: public void mouseMoved(MouseEvent mevt) {
172: }
173: }
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