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The Open Source version of the IBM Toolbox for Java
///////////////////////////////////////////////////////////////////////////////
//
// JTOpen (IBM Toolbox for Java - OSS version)
//
// Filename: Find.java
//
// The source code contained herein is licensed under the IBM Public License
// Version 1.0, which has been approved by the Open Source Initiative.
// Copyright (C) 2002 International Business Machines Corporation and
// others. All rights reserved.
//
///////////////////////////////////////////////////////////////////////////////
package com.ibm.as400.util.commtrace;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.util.ResourceBundle;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextArea;
import javax.swing.JTextField;
/**
* Easily allow for searching of a TextArea.
* Presents the user with a dialog which allows them to enter text and search for the text in the specified TextArea.
*/
class Find extends WindowAdapter implements KeyListener {
private JTextArea ta;
private JFrame find;
private JButton fnext,
cancel;
private boolean isClosed=false;
private JCheckBox casebox,
wrapbox,
reverse;
private JTextField input;
private int index=0; // Our position in the text area
private String search="";
/**
* Creates a Find Dialog to search the specified text area.
* @param ta the TextArea to search.
*/
public Find(JTextArea ta) {
this.ta = ta;
createDialog();
}
/**
* Attempts to send the find dialog to the front of the screen.
*/
public void toFront() {
find.toFront();
}
/**
* Creates the find Dialog and presents it to the user.
*/
private void createDialog() {
if(find!=null) {
find.toFront();
return;
}
find = new JFrame(ResourceBundleLoader_ct.getText("Find"));
JPanel pnl = new JPanel();
GridBagLayout gridbag = new GridBagLayout();
pnl.setLayout((gridbag));
GridBagConstraints c = new GridBagConstraints();
input = new JTextField(30);
fnext = new JButton(ResourceBundleLoader_ct.getText("FindNext"));
fnext.addKeyListener(this);
cancel = new JButton(ResourceBundleLoader_ct.getText("Cancel"));
cancel.addKeyListener(this);
casebox = new JCheckBox(ResourceBundleLoader_ct.getText("MatchCase"),true);
wrapbox = new JCheckBox(ResourceBundleLoader_ct.getText("WrapSearch"),true);
reverse = new JCheckBox(ResourceBundleLoader_ct.getText("Reverse"),false);
c.weightx = 0.0;
c.weighty = 0.0;
c.fill=GridBagConstraints.HORIZONTAL;
c.gridwidth=GridBagConstraints.RELATIVE;
c.gridheight=GridBagConstraints.RELATIVE;
gridbag.setConstraints(input,c);
pnl.add(input);
c.fill=GridBagConstraints.BOTH;
c.gridheight = 2;
c.gridwidth=GridBagConstraints.REMAINDER;
c.gridheight=GridBagConstraints.RELATIVE;
gridbag.setConstraints(fnext,c);
pnl.add(fnext);
fnext.addActionListener(new ActionListener() { // When the user selects the find button search the TextArea
public void actionPerformed(ActionEvent e) {
findnext(input.getText());
}
}
);
pnl.add(wrapbox);
pnl.add(casebox);
c.gridwidth=GridBagConstraints.RELATIVE;
c.gridheight=GridBagConstraints.REMAINDER;
gridbag.setConstraints(reverse,c);
pnl.add(reverse);
c.gridheight = 2;
c.gridwidth=GridBagConstraints.REMAINDER;
c.gridheight=GridBagConstraints.REMAINDER;
gridbag.setConstraints(cancel,c);
pnl.add(cancel);
cancel.addActionListener(new ActionListener() { // Close the find dialog when the user selects the cancel button
public void actionPerformed(ActionEvent e) {
close();
}
}
);
find.getContentPane().add(pnl);
find.addWindowListener(this);
//find.pack();
find.setSize(400,100);
find.setVisible(true);
find.invalidate();
find.validate();
find.repaint();
}
/**
* Finds the next occurance of the given string in the textarea and selects it.
*
* @param search The string to search for.
*/
public void findnext(String search) {
int tmp = 0;
this.search = search;
String searchText = ta.getText();
if(!casebox.isSelected()) {
searchText = searchText.toLowerCase();
search = search.toLowerCase();
}
if(search == null) {
} else if(search.length() == 0) {
CommTrace.error(find,"Error","No String specified");
} else {
if(reverse.isSelected()) {
tmp = searchText.lastIndexOf(search,index-search.length());
} else {
tmp = searchText.indexOf(search,index+search.length());
}
if(tmp != -1) { // Search text found
ta.select(tmp,tmp+search.length());
index=tmp;
} else { // Search text not found
if(index!=0 && wrapbox.isSelected()) { // If the user wants to wrap the search, search again.
index = 0;
findnext(search);
} else {
CommTrace.error(find,"Error","Text not found");
}
tmp = 0;
}
}
index=tmp;
find.invalidate();
find.validate();
find.repaint();
}
/**
* Invoked when a window is in the process of being closed.
* @param e The event for this window.
*/
public void windowClosing(WindowEvent e) {
if(e.getSource() == find) {
close();
}
}
/**
* Closes the find dialog.
*/
public void close() {
isClosed=true;
find.setVisible(false);
}
/**
* @return true when the find dialog was closed by the user, false otherwise.
*/
public boolean isClosed() {
return isClosed;
}
/**
* Invoked when a key has been typed.
* @param e The associated KeyEvent.
*/
public void keyTyped(KeyEvent e) {}
/**
* Invoked when a key has been pressed.
* @param e The associated KeyEvent.
*/
public void keyPressed(KeyEvent e) {
int keyCode = e.getKeyCode();
if(e.getSource()==fnext) { // If the enter key is pressed while our search box is selected search.
if(keyCode==KeyEvent.VK_ENTER) {
findnext(input.getText());
}
} else if(e.getSource()==cancel) { // Remove find dialog is the user selects cancel
if(keyCode==KeyEvent.VK_ENTER) {
isClosed=true;
find.setVisible(false);
}
}
}
/**
* Invoked when a key has been released.
* @param e The associated KeyEvent.
*/
public void keyReleased(KeyEvent e) {}
}