📄 inputdatehandler.java
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// (c) 2003 Allen I Holub. All rights reserved.
package com.holub.ui.HTML;
import java.util.Properties;
import java.util.Date;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import com.holub.ui.DateInput;
import com.holub.ui.InteractiveDate;
import com.holub.tools.DateUtil;
/**
* A handler to add date tags to {@link HTMLPane}. Tag syntax is:
* <pre>
<inputDate value="10/8/55" size="40" name=date1 readonly >
* </pre>
* <ol>
* <li>The date is read/write unless the readonly attribute is specified.
* <li>The optional size= is the approximate width of the UI in columns.
* <li>The optional value= attribute specifies a date other than "today."
* <li>The name= attribute specifies the key in the key=value pair returned
* on form submission.
* </ol>
*
* <!-- ====================== distribution terms ===================== -->
* <p><blockquote
* style="border-style: solid; border-width:thin; padding: 1em 1em 1em 1em;">
* <center>
* Copyright © 2003, Allen I. Holub. All rights reserved.
* </center>
* <br>
* <br>
* This code is distributed under the terms of the
* <a href="http://www.gnu.org/licenses/gpl.html"
* >GNU Public License</a> (GPL)
* with the following ammendment to section 2.c:
* <p>
* As a requirement for distributing this code, your splash screen,
* about box, or equivalent must include an my name, copyright,
* <em>and URL</em>. An acceptable message would be:
* <center>
* This program contains Allen Holub's <em>XXX</em> utility.<br>
* (c) 2003 Allen I. Holub. All Rights Reserved.<br>
* http://www.holub.com<br>
* </center>
* If your progam does not run interactively, then the foregoing
* notice must appear in your documentation.
* </blockquote>
* <!-- =============================================================== -->
* @author Allen I. Holub
*/
public class InputDateHandler implements TagHandler
{
public JComponent handleTag( HTMLPane source, final Properties attributes )
{ class Proxy extends JPanel implements TagBehavior
{
private final InteractiveDate value = new InteractiveDate();
private final String name = attributes.getProperty("name");
public Proxy()
{ // assert (name != null) : "Required name attribute missing from date tag";
String valueAttribute = attributes.getProperty("value");
Date d = (valueAttribute==null) ? new Date() : DateUtil.parseDate(valueAttribute);
// assert d != null : ("Illegal date specified in tag: " + value );
value.setTime( d );
JComponent control = value.getUi( attributes.getProperty("readonly") != null );
String sizeAttribute = attributes.getProperty("size");
if( sizeAttribute != null )
{
// Set the size. Assume six pixels per column with an additional
// 15 for the button that pops up the date-selector dialog.
// I hate to hard-code the default 19-pixel height, but there's
// no easy way to get the actual height (control.getPreferredSize
// returns garbage).
int width = (sizeAttribute==null)
? 20
: Integer.parseInt(sizeAttribute)
;
Dimension current = new Dimension( (width * 6) + 15, 19 );
control.setPreferredSize( current );
control.setMinimumSize ( current );
}
add(control);
setBorder(null);
setOpaque(false);
setAlignmentY( HTMLPane.BASELINE_ALIGNMENT );
}
public String getFormData(){ return name + "=" + value; }
public void reset() {}
public void destroy() {}
}
return new Proxy();
}
private static class Test
{ public static void main( String[] args )
{ HTMLPane pane = new HTMLPane(true);
pane.addActionListener
( new ActionListener()
{ public void actionPerformed(ActionEvent e)
{ HTMLPane.FormActionEvent
event = (HTMLPane.FormActionEvent)e;
event.data().list( System.out );
}
}
);
pane.addTag( "inputDate", new InputDateHandler() );
pane.setText
( "<html>"
+ "<head>"
+ "</head>"
+ "<body>"
+ "<form>"
+ "<table border=1>"
+ "<tr><td> Today (readonly) </td><td align=left> <inputDate size=\"40\" name=date0 readonly> </td></tr>"
+ "<tr><td> 10/8/55 (date1) </td><td align=left> <inputDate value=\"10/8/55\" size=\"40\" name=date1> </td></tr>"
+ "<tr><td> Today (date2) </td><td align=left> <inputDate name=date2 > </td></tr>"
+ "</table>"
+ "<br><input type=submit value=Submit>"
+ "</form>"
+ "</body>"
+ "</html>"
);
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().add( pane );
frame.pack();
frame.show();
}
}
}
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