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42 import javax.swing.*;
43 import javax.swing.event.*;
44 import javax.swing.text.*;
45 import javax.swing.border.*;
46 import javax.swing.colorchooser.*;
47 import javax.swing.filechooser.*;
48 import javax.accessibility.*;
49
50 import java.awt.*;
51 import java.awt.event.*;
52 import java.beans.*;
53 import java.util.*;
54 import java.io.*;
55 import java.applet.*;
56 import java.net.*;
57
58
65 public class ProgressBarDemo extends DemoModule {
66
67
70 public static void main(String  [] args) {
71 ProgressBarDemo demo = new ProgressBarDemo(null);
72 demo.mainImpl();
73 }
74
75
78 public ProgressBarDemo(SwingSet2 swingset) {
79 super(swingset, "ProgressBarDemo", "toolbar/JProgressBar.gif");
82
83 createProgressPanel();
84 }
85
86 javax.swing.Timer timer = new javax.swing.Timer (18, createTextLoadAction());
87 Action loadAction;
88 Action stopAction;
89 JProgressBar progressBar;
90 JTextArea progressTextArea;
91
92 void updateDragEnabled(boolean dragEnabled) {
93 progressTextArea.setDragEnabled(dragEnabled);
94 }
95
96 public void createProgressPanel() {
97 getDemoPanel().setLayout(new BorderLayout());
98
99 JPanel textWrapper = new JPanel(new BorderLayout());
100 textWrapper.setBorder(new SoftBevelBorder(BevelBorder.LOWERED));
101 textWrapper.setAlignmentX(LEFT_ALIGNMENT);
102 progressTextArea = new MyTextArea();
103
104 progressTextArea.getAccessibleContext().setAccessibleName(getString("ProgressBarDemo.accessible_text_area_name"));
105 progressTextArea.getAccessibleContext().setAccessibleName(getString("ProgressBarDemo.accessible_text_area_description"));
106 textWrapper.add(new JScrollPane(progressTextArea), BorderLayout.CENTER);
107
108 getDemoPanel().add(textWrapper, BorderLayout.CENTER);
109
110 JPanel progressPanel = new JPanel();
111 getDemoPanel().add(progressPanel, BorderLayout.SOUTH);
112
113 progressBar = new JProgressBar(JProgressBar.HORIZONTAL, 0, text.length()) {
114 public Dimension getPreferredSize() {
115 return new Dimension(300, super.getPreferredSize().height);
116 }
117 };
118 progressBar.getAccessibleContext().setAccessibleName(getString("ProgressBarDemo.accessible_text_loading_progress"));
119
120 progressPanel.add(progressBar);
121 progressPanel.add(createLoadButton());
122 progressPanel.add(createStopButton());
123 }
124
125 public JButton createLoadButton() {
126 loadAction = new AbstractAction(getString("ProgressBarDemo.start_button")) {
127 public void actionPerformed(ActionEvent e) {
128 loadAction.setEnabled(false);
129 stopAction.setEnabled(true);
130 if (progressBar.getValue() == progressBar.getMaximum()) {
131 progressBar.setValue(0);
132 textLocation = 0;
133 progressTextArea.setText("");
134 }
135 timer.start();
136 }
137 };
138 return createButton(loadAction);
139 }
140
141 public JButton createStopButton() {
142 stopAction = new AbstractAction(getString("ProgressBarDemo.stop_button")) {
143 public void actionPerformed(ActionEvent e) {
144 timer.stop();
145 loadAction.setEnabled(true);
146 stopAction.setEnabled(false);
147 }
148 };
149 return createButton(stopAction);
150 }
151
152 public JButton createButton(Action a) {
153 JButton b = new JButton();
154 b.putClientProperty("displayActionText", Boolean.TRUE);
158 b.setAction(a);
159 return b;
160 }
161
162
163 int textLocation = 0;
164
165 String text = getString("ProgressBarDemo.text");
166
167 public Action createTextLoadAction() {
168 return new AbstractAction("text load action") {
169 public void actionPerformed (ActionEvent e) {
170 if(progressBar.getValue() < progressBar.getMaximum()) {
171 progressBar.setValue(progressBar.getValue() + 1);
172 progressTextArea.append(text.substring(textLocation, textLocation+1));
173 textLocation++;
174 } else {
175 timer.stop();
176 loadAction.setEnabled(true);
177 stopAction.setEnabled(false);
178 }
179 }
180 };
181 }
182
183
184 class MyTextArea extends JTextArea {
185 public MyTextArea() {
186 super(null, 0, 0);
187 setEditable(false);
188 setText("");
189 }
190
191 public float getAlignmentX () {
192 return LEFT_ALIGNMENT;
193 }
194
195 public float getAlignmentY () {
196 return TOP_ALIGNMENT;
197 }
198 }
199 }
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202 |
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