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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