scope/editor/EditorFrame.java

	EditorFrame.java revision c23e82b612acd5e947c164114377578116f6d298
/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * See LICENSE.txt included in this distribution for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at LICENSE.txt.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */

/*
 * Copyright 2005 Trond Norbye.  All rights reserved.
 * Use is subject to license terms.
 */
package org.opensolaris.opengrok.search.scope.editor;

import java.awt.Dimension;
import java.awt.Toolkit;
import java.io.IOException;
import java.io.Reader;

/**
 * The EditorFrame is just a simple frame used by the internal editor to display files
 * @author Trond Norbye
 */
public class EditorFrame extends javax.swing.JFrame {

    /**
     * Creates new form EditorFrame
     */
    public EditorFrame() {
        initComponents();
        Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
        Dimension mySize = getPreferredSize();
        setLocation(screenSize.width/2 - (mySize.width/2), screenSize.height/2 - (mySize.height/2));
    }

    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    // <editor-fold defaultstate="collapsed" desc=" Generated Code ">//GEN-BEGIN:initComponents
    private void initComponents() {
        jScrollPane1 = new javax.swing.JScrollPane();
        textArea = new javax.swing.JTextArea();

        setDefaultCloseOperation(javax.swing.WindowConstants.DISPOSE_ON_CLOSE);
        textArea.setColumns(80);
        textArea.setEditable(false);
        textArea.setRows(25);
        jScrollPane1.setViewportView(textArea);

        org.jdesktop.layout.GroupLayout layout = new org.jdesktop.layout.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(org.jdesktop.layout.GroupLayout.LEADING, layout.createSequentialGroup()
                .addContainerGap()
                .add(jScrollPane1, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 927, Short.MAX_VALUE)
                .addContainerGap())
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(org.jdesktop.layout.GroupLayout.LEADING, layout.createSequentialGroup()
                .addContainerGap()
                .add(jScrollPane1, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 593, Short.MAX_VALUE)
                .addContainerGap())
        );
        pack();
    }// </editor-fold>//GEN-END:initComponents

    /**
     * Load a named file into the JTextArea.
     * @param filename The name of the file to display in the title of the frame
     * @param reader A reader I may read data from
     * @param lineno The line number to position the caret at (null if unknown)
     * @throws java.io.IOException If an Exception occurs
     */
    public void openFile(String filename, Reader reader, Integer lineno) throws IOException {
        setTitle(filename);
        StringBuilder sb = new StringBuilder();
        char buffer[] = new char[8192];
        int r;
        while ((r = reader.read(buffer)) != -1) {
            sb.append(buffer, 0, r);
        }
        textArea.setText(sb.toString());

        int position = 0;
        if (lineno != null) {
            int line = lineno.intValue();
            String text = textArea.getText();

            for (int ii = 1; ii < line; ++ii) {
                int p = text.indexOf("\n", position);
                if (p == -1) {
                    break;
                } else {
                    position = p + 1;
                }
            }
        }

        textArea.setCaretPosition(position);
        textArea.setSelectionStart(position);
        int end = textArea.getText().indexOf("\n", position);
        if (end == -1) {
            end = textArea.getText().length();
        }
        textArea.setSelectionEnd(end);

    }

    // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JTextArea textArea;
    // End of variables declaration//GEN-END:variables
}