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From ra...@apache.org
Subject svn commit: r382035 - /jakarta/commons/sandbox/scxml/trunk/src/test/java/org/apache/commons/scxml/env/StopWatchDisplay.java
Date Wed, 01 Mar 2006 14:35:59 GMT
Author: rahul
Date: Wed Mar  1 06:35:58 2006
New Revision: 382035

URL: http://svn.apache.org/viewcvs?rev=382035&view=rev
Log:
A quick Swing UI to front the stopwatch usecase.

Added:
    jakarta/commons/sandbox/scxml/trunk/src/test/java/org/apache/commons/scxml/env/StopWatchDisplay.java
  (with props)

Added: jakarta/commons/sandbox/scxml/trunk/src/test/java/org/apache/commons/scxml/env/StopWatchDisplay.java
URL: http://svn.apache.org/viewcvs/jakarta/commons/sandbox/scxml/trunk/src/test/java/org/apache/commons/scxml/env/StopWatchDisplay.java?rev=382035&view=auto
==============================================================================
--- jakarta/commons/sandbox/scxml/trunk/src/test/java/org/apache/commons/scxml/env/StopWatchDisplay.java
(added)
+++ jakarta/commons/sandbox/scxml/trunk/src/test/java/org/apache/commons/scxml/env/StopWatchDisplay.java
Wed Mar  1 06:35:58 2006
@@ -0,0 +1,156 @@
+/*
+ * Copyright 2006 The Apache Software Foundation.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.commons.scxml.env;
+
+import java.awt.BorderLayout;
+import java.awt.Graphics;
+import java.awt.Image;
+import java.awt.Toolkit;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.net.URL;
+import java.util.Timer;
+import java.util.TimerTask;
+
+import javax.swing.JButton;
+import javax.swing.JFrame;
+import javax.swing.JLabel;
+import javax.swing.JPanel;
+
+
+/**
+ * Quick GUI to demonstrate the SCXML driven stopwatch.
+ *
+ * Separation of UI (this class) from behavior (StopWatch class).
+ * UI serves merely as a front to relay user initiated events to StopWatch
+ * object, which encapsulates all the behavior of a stopwatch.
+ * Using SCXML makes the StopWatch class simplistic, and provides a direct
+ * route from the UML model to the runtime.
+ *
+ * @see StopWatch
+ */
+public class StopWatchDisplay extends JFrame
+        implements ActionListener {
+
+    private StopWatch stopWatch;
+    private Image watchImage, watchIcon;
+
+    public StopWatchDisplay() {
+        super("SCXML stopwatch");
+        stopWatch = new StopWatch();
+        setupUI();
+    }
+
+    public void actionPerformed(ActionEvent e) {
+        String command = e.getActionCommand();
+        if (command.equals("START")) {
+            if (start.getText().equals("Start")) {
+                stopWatch.fireEvent(StopWatch.EVENT_START);
+                start.setText("Stop");
+                split.setEnabled(true);
+            } else if (start.getText().equals("Stop")) {
+                stopWatch.fireEvent(StopWatch.EVENT_STOP);
+                start.setText("Reset");
+                split.setEnabled(false);
+            } else {
+                stopWatch.fireEvent(StopWatch.EVENT_RESET);
+                start.setText("Start");
+                split.setText("Split");
+            }
+        } else if (command.equals("SPLIT")) {
+            if (split.getText().equals("Split")) {
+                stopWatch.fireEvent(StopWatch.EVENT_SPLIT);
+                split.setText("Unsplit");
+            } else {
+                stopWatch.fireEvent(StopWatch.EVENT_UNSPLIT);
+                split.setText("Split");
+            }
+        }
+    }
+
+    private void setupUI() {
+        URL imageURL = this.getClass().getClassLoader().
+            getResource("org/apache/commons/scxml/env/stopwatch.gif");
+        URL iconURL = this.getClass().getClassLoader().
+            getResource("org/apache/commons/scxml/env/stopwatchicon.gif");
+        Toolkit kit = Toolkit.getDefaultToolkit();
+        watchImage = kit.createImage(imageURL);
+        watchIcon = kit.createImage(iconURL);
+        WatchPanel panel = new WatchPanel();
+        panel.setLayout(new BorderLayout());
+        setContentPane(panel);
+        display = new JLabel(stopWatch.getDisplay());
+        panel.add(display, BorderLayout.PAGE_START);
+        start = makeButton("START", "start, stop, reset", "Start");
+        panel.add(start, BorderLayout.LINE_START);
+        state = new JLabel();
+        panel.add(state, BorderLayout.CENTER);
+        split = makeButton("SPLIT", "split, unsplit", "Split");
+        split.setEnabled(false);
+        panel.add(split, BorderLayout.LINE_END);
+        pack();
+        setLocation(200,200);
+        setIconImage(watchIcon);
+        setResizable(false);
+        setSize(250,125);
+        show();
+        setDefaultCloseOperation(EXIT_ON_CLOSE);
+        Timer displayTimer = new Timer();
+        displayTimer.scheduleAtFixedRate(new TimerTask() {
+            public void run() {
+                display.setText(DISPLAY_PREFIX + stopWatch.getDisplay()
+                    + DISPLAY_SUFFIX);
+                state.setText(STATE_PREFIX + stopWatch.getCurrentState()
+                    + STATE_SUFFIX);
+            }
+        }, 100, 100);
+    }
+
+    private JButton makeButton(final String actionCommand,
+            final String toolTipText, final String altText) {
+        JButton button = new JButton(altText);
+        button.setActionCommand(actionCommand);
+        button.setToolTipText(toolTipText);
+        button.addActionListener(this);
+        button.setOpaque(false);
+        return button;
+    }
+
+    class WatchPanel extends JPanel {
+        public void paintComponent(Graphics g) {
+            if(watchImage != null) {
+                g.drawImage(watchImage,0,0,this.getWidth(),this.getHeight(),this);
+            }
+        }
+    }
+
+    public static void main(String[] args) {
+        StopWatchDisplay stopWatchDisplay = new StopWatchDisplay();
+    }
+
+    private JLabel display, state;
+    private JButton start, split;
+    // spaces :: GridBagConstraints ;-)
+    private static final String
+        DISPLAY_PREFIX = "<html><font face=\"Courier\" color=\"maroon\"" +
+            " size=\"10\"><b>&nbsp;&nbsp;&nbsp;",
+        DISPLAY_SUFFIX = "</b></font></html>",
+        STATE_PREFIX = "<html><font color=\"blue\" size=\"4\"" +
+            ">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;",
+        STATE_SUFFIX = "</font></html>";
+
+}
+

Propchange: jakarta/commons/sandbox/scxml/trunk/src/test/java/org/apache/commons/scxml/env/StopWatchDisplay.java
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    svn:eol-style = native

Propchange: jakarta/commons/sandbox/scxml/trunk/src/test/java/org/apache/commons/scxml/env/StopWatchDisplay.java
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    svn:keywords = Date Author Id Revision HeadURL



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