[19253] | 1 | /*
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| 2 | * Copyright 2005 Paul Hinds
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| 3 | *
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| 4 | * Licensed under the Apache License, Version 2.0 (the "License");
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| 5 | * you may not use this file except in compliance with the License.
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| 6 | * You may obtain a copy of the License at
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| 7 | *
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| 8 | * http://www.apache.org/licenses/LICENSE-2.0
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| 9 | *
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| 10 | * Unless required by applicable law or agreed to in writing, software
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| 11 | * distributed under the License is distributed on an "AS IS" BASIS,
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| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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| 13 | * See the License for the specific language governing permissions and
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| 14 | * limitations under the License.
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| 15 | */
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| 16 | package org.tp23.gui.widget;
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| 17 |
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| 18 | import java.awt.event.ActionEvent;
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| 19 | import java.awt.event.ActionListener;
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| 20 | import java.awt.event.MouseAdapter;
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| 21 | import java.awt.event.MouseEvent;
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| 22 | import java.io.FileNotFoundException;
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| 23 | import java.io.FileWriter;
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| 24 | import java.io.IOException;
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| 25 |
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| 26 | import javax.swing.JMenuItem;
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| 27 | import javax.swing.JPopupMenu;
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| 28 | import javax.swing.JTextArea;
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| 29 |
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| 30 | public class FollowingJTextArea extends JTextArea{
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| 31 |
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| 32 | private boolean follow = true;
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| 33 |
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| 34 | public FollowingJTextArea() {
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| 35 | jInit();
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| 36 | }
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| 37 |
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| 38 |
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| 39 | private void jInit(){
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| 40 | final JPopupMenu popUp = getPopupMenu();
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| 41 | this.add(popUp);
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| 42 | this.addMouseListener(new MouseAdapter(){
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| 43 | public void mouseClicked(MouseEvent e) {
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| 44 | if (e.getButton() == e.BUTTON3) {
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| 45 | popUp.show(FollowingJTextArea.this,e.getX(),e.getY());
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| 46 | }
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| 47 | }
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| 48 | });
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| 49 | }
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| 50 |
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| 51 | public boolean isFollow() {
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| 52 | return follow;
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| 53 | }
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| 54 | public void setFollow(boolean follow) {
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| 55 | this.follow = follow;
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| 56 | }
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| 57 |
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| 58 | private void scrollToEnd(){
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| 59 | setCaretPosition(getDocument().getLength());
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| 60 | }
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| 61 | private void toggleFollow(){
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| 62 | setFollow(!isFollow());
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| 63 | }
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| 64 |
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| 65 | /**
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| 66 | * Appends the given text to the end of the document.
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| 67 | *
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| 68 | * @param str the text to insert
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| 69 | * @todo Implement this javax.swing.JTextArea method
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| 70 | */
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| 71 | public void append(String str) {
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| 72 | super.append(str);
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| 73 | if(follow)scrollToEnd();
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| 74 | }
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| 75 | private JPopupMenu getPopupMenu() {
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| 76 | JPopupMenu contextMenu = new JPopupMenu("Options");
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| 77 | JMenuItem saveMenu = new JMenuItem("Save Text");
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| 78 | saveMenu.addActionListener(new ActionListener() {
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| 79 | public void actionPerformed(ActionEvent e) {
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| 80 | SelectFileAction action = new SelectFileAction("Save Output", null, null);
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| 81 | try {
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| 82 | action.actionPerformed(new ActionEvent(this, 0, "Save Output"));
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| 83 | if (action.selectedFile != null) {
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| 84 | FileWriter fos = new FileWriter(action.selectedFile);
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| 85 | fos.write(getText());
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| 86 | fos.close();
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| 87 | }
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| 88 |
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| 89 | }
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| 90 | catch (FileNotFoundException ex) {
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| 91 | System.err.println("FileNotFoundException");
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| 92 | }
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| 93 | catch (IOException ex) {
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| 94 | System.err.println("IOException");
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| 95 | }
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| 96 | }
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| 97 | });
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| 98 | contextMenu.add(saveMenu);
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| 99 |
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| 100 | JMenuItem toggleFollowMenu = new JMenuItem("Toggle Follow");
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| 101 | toggleFollowMenu.addActionListener(new ActionListener() {
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| 102 | public void actionPerformed(ActionEvent e) {
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| 103 | toggleFollow();
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| 104 | }
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| 105 | });
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| 106 | contextMenu.add(toggleFollowMenu);
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| 107 |
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| 108 | JMenuItem jumpToEndMenu = new JMenuItem("Jump To End");
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| 109 | jumpToEndMenu.addActionListener(new ActionListener() {
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| 110 | public void actionPerformed(ActionEvent e) {
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| 111 | setCaretPosition(getDocument().getLength());
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| 112 | }
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| 113 | });
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| 114 | contextMenu.add(toggleFollowMenu);
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| 115 |
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| 116 | JMenuItem clearTextMenu = new JMenuItem("Clear Text");
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| 117 | clearTextMenu.addActionListener(new ActionListener() {
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| 118 | public void actionPerformed(ActionEvent e) {
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| 119 | setText("");
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| 120 | }
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| 121 | });
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| 122 | contextMenu.add(clearTextMenu);
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| 123 | return contextMenu;
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| 124 | }
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| 125 | }
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