/* * Copyright (c) 1996-1999 Bill Venners. All Rights Reserved. * * This Java source file is part of the Interactive Illustrations Web * Site, which is delivered in the applets directory of the CD-ROM * that accompanies the book "Inside the Java 2 Virtual Machine" by Bill * Venners, published by McGraw-Hill, 1999, ISBN: 0-07-135093-4. This * source file is provided for evaluation purposes only, but you can * redistribute it under certain conditions, described in the full * copyright notice below. * * Full Copyright Notice: * * All the web pages and Java applets delivered in the applets * directory of the CD-ROM, consisting of ".html," ".gif," ".class," * and ".java" files, are copyrighted (c) 1996-1999 by Bill * Venners, and all rights are reserved. This material may be copied * and placed on any commercial or non-commercial web server on any * network (including the internet) provided that the following * guidelines are followed: * * a. All the web pages and Java Applets (".html," ".gif," ".class," * and ".java" files), including the source code, that are delivered * in the applets directory of the CD-ROM that * accompanies the book must be published together on the same web * site. * * b. All the web pages and Java Applets (".html," ".gif," ".class," * and ".java" files) must be published "as is" and may not be altered * in any way. * * c. All use and access to this web site must be free, and no fees * can be charged to view these materials, unless express written * permission is obtained from Bill Venners. * * d. The web pages and Java Applets may not be distributed on any * media, other than a web server on a network, and may not accompany * any book or publication. * * BILL VENNERS MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE * SUITABILITY OF THE SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING * BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, * FITNESS FOR PARTICULAR PURPOSE, OR NON-INFRINGEMENT. BILL VENNERS * SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY A LICENSEE AS A * RESULT OF USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS * DERIVATIVES. */ import java.awt.*; /** * This class serves as the outermost panel upon which all * the user interface goodies for the assign references * mode is placed. * * @author Bill Venners */ class AssignReferencesPanel extends Panel { HeapOfFishTextArea controlPanelTextArea; String currentAssignRefsMode = HeapOfFishStrings.linkFish; AssignReferencesCanvases assignRefsCanvases; AssignReferencesPanel(GCHeap gcHeap, LocalVariables localVars, HeapOfFishTextArea ta) { controlPanelTextArea = ta; setBackground(Color.blue); setLayout(new BorderLayout()); assignRefsCanvases = new AssignReferencesCanvases(gcHeap, localVars, ta); add("South", new AssignReferencesCheckboxPanel()); add("Center", assignRefsCanvases); } public void refreshInstructions() { if (currentAssignRefsMode.equals(HeapOfFishStrings.moveFish)) { controlPanelTextArea.setText(HeapOfFishStrings.moveFishInstructions); } else if (currentAssignRefsMode.equals(HeapOfFishStrings.linkFish)) { controlPanelTextArea.setText(HeapOfFishStrings.linkFishInstructions); } else if (currentAssignRefsMode.equals(HeapOfFishStrings.unlinkFish)) { controlPanelTextArea.setText(HeapOfFishStrings.unlinkFishInstructions); } } public boolean action(Event evt, Object arg) { if (evt.target instanceof Checkbox) { Checkbox cb = (Checkbox) evt.target; String cbname = cb.getLabel(); if (cbname.equals(HeapOfFishStrings.moveFish)) { if (!currentAssignRefsMode.equals(HeapOfFishStrings.moveFish)) { controlPanelTextArea.setText(HeapOfFishStrings.moveFish); assignRefsCanvases.setMode(HeapOfFishStrings.moveFish); controlPanelTextArea.setText(HeapOfFishStrings.moveFishInstructions); } } else if (cbname.equals(HeapOfFishStrings.linkFish)) { if (!currentAssignRefsMode.equals(HeapOfFishStrings.linkFish)) { controlPanelTextArea.setText(HeapOfFishStrings.linkFish); assignRefsCanvases.setMode(HeapOfFishStrings.linkFish); controlPanelTextArea.setText(HeapOfFishStrings.linkFishInstructions); } } else if (cbname.equals(HeapOfFishStrings.unlinkFish)) { if (!currentAssignRefsMode.equals(HeapOfFishStrings.unlinkFish)) { controlPanelTextArea.setText(HeapOfFishStrings.unlinkFish); assignRefsCanvases.setMode(HeapOfFishStrings.unlinkFish); controlPanelTextArea.setText(HeapOfFishStrings.unlinkFishInstructions); } } currentAssignRefsMode = cbname; } return true; } }