/* * Copyright (c) 1998, 2000, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation.  Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */package javax.swing.text.html; import java.awt.*;import java.awt.event.*;import java.net.URLEncoder;import java.net.MalformedURLException;import java.io.IOException;import java.net.URL;import javax.swing.text.*;import javax.swing.*;  /** * A view that supports the &lt;ISINDEX&lt; tag.  This is implemented * as a JPanel that contains * * @author Sunita Mani */ class IsindexView extends ComponentView implements ActionListener {     JTextField textField;     /**     * Creates an IsindexView     */    public IsindexView(Element elem) {        super(elem);    }     /**     * Creates the components necessary to to implement     * this view.  The component returned is a <code>JPanel</code>,     * that contains the PROMPT to the left and <code>JTextField</code>     * to the right.     */    public Component createComponent() {        AttributeSet attr = getElement().getAttributes();         JPanel panel = new JPanel(new BorderLayout());        panel.setBackground(null);         String prompt = (String)attr.getAttribute(HTML.Attribute.PROMPT);        if (prompt == null) {            prompt = UIManager.getString("IsindexView.prompt");        }        JLabel label = new JLabel(prompt);         textField = new JTextField();        textField.addActionListener(this);        panel.add(label, BorderLayout.WEST);        panel.add(textField, BorderLayout.CENTER);        panel.setAlignmentY(1.0f);        panel.setOpaque(false);        return panel;    }     /**     * Responsible for processing the ActionEvent.     * In this case this is hitting enter/return     * in the text field.  This will construct the     * URL from the base URL of the document.     * To the URL is appended a '?' followed by the     * contents of the JTextField.  The search     * contents are URLEncoded.     */    public void actionPerformed(ActionEvent evt) {         String data = textField.getText();        if (data != null) {            data = URLEncoder.encode(data);        }          AttributeSet attr = getElement().getAttributes();        HTMLDocument hdoc = (HTMLDocument)getElement().getDocument();         String action = (String) attr.getAttribute(HTML.Attribute.ACTION);        if (action == null) {            action = hdoc.getBase().toString();        }        try {            URL url = new URL(action+"?"+data);            JEditorPane pane = (JEditorPane)getContainer();            pane.setPage(url);        } catch (MalformedURLException e1) {        } catch (IOException e2) {        }    }}