// **********************************************************************
//
// <copyright>
//
// BBN Technologies, a Verizon Company
// 10 Moulton Street
// Cambridge, MA 02138
// (617) 873-8000
//
// Copyright (C) BBNT Solutions LLC. All rights reserved.
//
// </copyright>
// **********************************************************************
//
// $Source: /cvs/distapps/openmap/src/openmap/com/bbn/openmap/gui/ProjectionStackTool.java,v $
// $RCSfile: ProjectionStackTool.java,v $
// $Revision: 1.5 $
// $Date: 2005/08/09 17:49:51 $
// $Author: dietrick $
//
// **********************************************************************
package com.bbn.openmap.gui;
import java.awt.Insets;
import java.awt.event.ActionListener;
import java.util.Vector;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import com.bbn.openmap.proj.ProjectionStack;
import com.bbn.openmap.proj.ProjectionStackTrigger;
import com.bbn.openmap.util.Debug;
/**
* The ProjectionStackTool contains buttons that can trigger a
* ProjectionStack to change a projection of a MapBean to a previous
* projection, or to a later projection if the active projection is in
* the middle of the stack. The OpenMap ProjectionStack will look for
* one of these, and connect itself to it if it finds one.
*/
public class ProjectionStackTool extends OMToolComponent implements
ProjectionStackTrigger {
protected Vector listeners;
protected JButton backButton;
protected JButton forwardButton;
// protected JButton clearButton;
protected static transient String backName = "backproj.gif";
protected static transient String forwardName = "forwardproj.gif";
protected static transient String dimBackName = "dimbackproj.gif";
protected static transient String dimForwardName = "dimforwardproj.gif";
protected boolean dimBackButton = true;
protected boolean dimForwardButton = true;
ImageIcon backIcon;
ImageIcon dimBackIcon;
ImageIcon forwardIcon;
ImageIcon dimForwardIcon;
public ProjectionStackTool() {
super();
setKey("projectionstacktool");
resetButtons(!dimBackButton, !dimForwardButton);
add(backButton);
add(forwardButton);
// add(clearButton);
}
/**
* Add an ActionListener for events that trigger events to shift
* the Projection stack. If you are hooking up a ProjectionStack,
* you don't need to call this. The ProjectionStack will call this
* when you can addProjectionStackTrigger on it.
*/
public void addActionListener(ActionListener al) {
if (backButton != null && forwardButton != null) {
backButton.addActionListener(al);
forwardButton.addActionListener(al);
// clearButton.addActionListener(al);
} else {
if (listeners == null) {
listeners = new Vector();
}
listeners.add(al);
}
}
/**
* Remove an ActionListener that receives events that trigger
* events to shift the Projection stack. If you are hooking up a
* ProjectionStack, you don't need to call this. The
* ProjectionStack will call this when you can
* removeProjectionStackTrigger on it.
*/
public void removeActionListener(ActionListener al) {
if (backButton != null && forwardButton != null) {
backButton.removeActionListener(al);
forwardButton.removeActionListener(al);
// clearButton.removeActionListener(al);
} else if (listeners != null) {
listeners.remove(al);
}
}
/**
* To receive a status to let the trigger know if any projections
* in the forward or backward stacks exist, possibly to disable
* any gui widgets.
*
* @param containsBackProjections there is at least one past
* projection in the back cache.
* @param containsForwardProjections there is at least one future
* projection in the forward cache. Used when a past
* projection is being used.
*/
public void updateProjectionStackStatus(boolean containsBackProjections,
boolean containsForwardProjections) {
dimBackButton = !containsBackProjections;
dimForwardButton = !containsForwardProjections;
resetButtons(containsBackProjections, containsForwardProjections);
}
public void resetButtons(boolean enableBackButton,
boolean enableForwardButton) {
if (backIcon == null) {
backIcon = new ImageIcon(getClass().getResource(backName));
}
if (dimBackIcon == null) {
dimBackIcon = new ImageIcon(getClass().getResource(dimBackName));
}
if (forwardIcon == null) {
forwardIcon = new ImageIcon(getClass().getResource(forwardName));
}
if (dimForwardIcon == null) {
dimForwardIcon = new ImageIcon(getClass().getResource(dimForwardName));
}
ImageIcon active;
String toolTip;
String disabled = " ("
+ i18n.get(ProjectionStackTool.class, "disabled", "disabled")
+ ")";
int size;
toolTip = i18n.get(ProjectionStackTool.class,
"backTip",
"Go back to previous projection");
if (enableBackButton) {
active = backIcon;
} else {
active = dimBackIcon;
toolTip += " " + disabled;
}
if (backButton == null) {
backButton = new JButton(active);
backButton.setMargin(new Insets(0, 0, 0, 0));
backButton.setBorderPainted(false);
backButton.setActionCommand(ProjectionStack.BackProjCmd);
if (listeners != null) {
size = listeners.size();
for (int i = 0; i < size; i++) {
backButton.addActionListener((ActionListener) listeners.elementAt(i));
}
}
} else {
backButton.setIcon(active);
}
backButton.setToolTipText(toolTip);
toolTip = i18n.get(ProjectionStackTool.class,
"forwardTip",
"Go forward to next projection");
if (enableForwardButton) {
active = forwardIcon;
} else {
active = dimForwardIcon;
toolTip += " " + disabled;
}
if (forwardButton == null) {
forwardButton = new JButton(active);
forwardButton.setMargin(new Insets(0, 0, 0, 0));
forwardButton.setBorderPainted(false);
forwardButton.setActionCommand(ProjectionStack.ForwardProjCmd);
if (listeners != null) {
size = listeners.size();
for (int i = 0; i < size; i++) {
forwardButton.addActionListener((ActionListener) listeners.elementAt(i));
}
}
} else {
forwardButton.setIcon(active);
}
forwardButton.setToolTipText(toolTip);
// if (clearButton == null) {
// clearButton = new JButton("Clear Stack");
// clearButton.setMargin(new Insets(0,0,0,0));
// clearButton.setBorderPainted(false);
// clearButton.setActionCommand(ProjectionStack.ClearStacksCmd);
// if (listeners != null) {
// size = listeners.size();
// for (int i = 0; i < size; i++) {
// clearButton.addActionListener((ActionListener)listeners.elementAt(i));
// }
// }
// }
}
public void findAndInit(Object someObj) {
if (someObj instanceof ProjectionStack) {
Debug.message("projectionstacktrigger",
"ProjectionStackTrigger adding a ProjectionStack");
((ProjectionStack) someObj).addProjectionStackTrigger(this);
}
}
public void findAndUndo(Object someObj) {
if (someObj instanceof ProjectionStack) {
Debug.message("projectionstacktrigger",
"ProjectionStackTrigger removing a ProjectionStack");
((ProjectionStack) someObj).removeProjectionStackTrigger(this);
}
}
}