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.awt;
053:
054: import java.awt.Component;
055: import java.awt.Dimension;
056: import java.awt.Point;
057: import java.awt.Toolkit;
058: import javax.swing.JDialog;
059: import javax.swing.JFrame;
060: import org.acm.seguin.ide.common.IDEPlugin;
061: import net.sourceforge.jrefactory.uml.UMLPackage;
062:
063: /**
064: * This object is responsible for centering the dialog box on the screen.
065: *
066: *@author Chris Seguin
067: *@created October 18, 2001
068: */
069: public class CenterDialog {
070: /**
071: * Constructor for the CenterDialog object
072: */
073: private CenterDialog() {
074: }
075:
076: /**
077: * Actually does the work
078: *
079: *@param dialog The dialog box
080: *@param parent the frame we are centering the dialog over or null if we
081: * should center it on the screen
082: */
083: public static void center(JDialog dialog, JFrame parent) {
084: Dimension dim = dialog.getPreferredSize();
085: Dimension frameSize;
086: int x;
087: int y;
088: if (parent == null) {
089: frameSize = Toolkit.getDefaultToolkit().getScreenSize();
090: x = 0;
091: y = 0;
092: } else {
093: frameSize = parent.getSize();
094: Point loc = parent.getLocation();
095: x = loc.x;
096: y = loc.y;
097: }
098:
099: x += (frameSize.width - dim.width) / 2;
100: y += (frameSize.height - dim.height) / 2;
101:
102: dialog.setLocation(x, y);
103: }
104:
105: /**
106: * Actually does the work to center the dialog, but uses the
107: * EditorOperation's frame to determine what to center the dialog over.
108: *
109: *@param dialog The dialog box
110: */
111: public static void center(JDialog dialog) {
112: JFrame view = (JFrame) IDEPlugin.getEditorFrame();
113: if (view == null) {
114: center(dialog, (JFrame) null);
115: } else {
116: center(dialog, view);
117: }
118: }
119:
120: /**
121: * Center the dailog on a diagram's frame
122: *
123: *@param dialog the diagram
124: *@param umlPackage the frame
125: */
126: public static void center(JDialog dialog,
127: org.acm.seguin.uml.UMLPackage umlPackage) {
128: if (umlPackage == null) {
129: center(dialog);
130: return;
131: }
132:
133: Component current = umlPackage.getParent();
134: while (!(current instanceof JFrame)) {
135: current = current.getParent();
136: }
137:
138: center(dialog, (JFrame) current);
139: }
140:
141: /**
142: * Center the dailog on a diagram's frame
143: *
144: *@param dialog the diagram
145: *@param umlPackage the frame
146: */
147: public static void center(JDialog dialog, UMLPackage umlPackage) {
148: if (umlPackage == null) {
149: center(dialog);
150: return;
151: }
152:
153: Component current = umlPackage.getParent();
154: while (!(current instanceof JFrame)) {
155: current = current.getParent();
156: }
157:
158: center(dialog, (JFrame) current);
159: }
160: }
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