| Element type | Swing component |
|---|---|
| input, button | JButton |
| input, checkbox | JButton |
| input, image | JButton |
| input, password | JButton |
| input, radio | JButton |
| input, reset | JButton |
| input, submit | JButton |
| input, text | JButton |
| select, size > 1 or with multiple attribute | *JList in JScrollPane |
| select, size unspecified or == 1 | JComboBox |
| textarea, text | JTextArea in JScrollPane |
| input, file | JTextField |
MouseEventListener.
*/
protected MouseEventListener()
{
// Nothing to do here.
}
public void mouseReleased(MouseEvent ev)
{
String data = getImageData(ev.getPoint());
imageSubmit(data);
}
}
/**
* If the value attribute of an <input type="submit">>
* tag is not specified, then this string is used.
*
* @deprecated As of JDK1.3 the value is fetched from the UIManager property
* FormView.submitButtonText.
*/
public static final String SUBMIT =
UIManager.getString("FormView.submitButtonText");
/**
* If the value attribute of an <input type="reset">>
* tag is not specified, then this string is used.
*
* @deprecated As of JDK1.3 the value is fetched from the UIManager property
* FormView.resetButtonText.
*/
public static final String RESET =
UIManager.getString("FormView.resetButtonText");
/**
* If this is true, the maximum size is set to the preferred size.
*/
private boolean maxIsPreferred;
/**
* Creates a new FormView.
*
* @param el the element that is displayed by this view.
*/
public FormView(Element el)
{
super(el);
}
/**
* Creates the correct AWT component for rendering the form element.
*/
protected Component createComponent()
{
Component comp = null;
Element el = getElement();
AttributeSet atts = el.getAttributes();
Object tag = atts.getAttribute(StyleConstants.NameAttribute);
Object model = atts.getAttribute(StyleConstants.ModelAttribute);
if (tag.equals(HTML.Tag.INPUT))
{
String type = (String) atts.getAttribute(HTML.Attribute.TYPE);
if (type.equals("button"))
{
String value = (String) atts.getAttribute(HTML.Attribute.VALUE);
JButton b = new JButton(value);
if (model != null)
{
b.setModel((ButtonModel) model);
b.addActionListener(this);
}
comp = b;
maxIsPreferred = true;
}
else if (type.equals("checkbox"))
{
JCheckBox c = new JCheckBox();
if (model != null)
{
boolean sel = atts.getAttribute(HTML.Attribute.CHECKED) != null;
((JToggleButton.ToggleButtonModel) model).setSelected(sel);
c.setModel((ButtonModel) model);
}
comp = c;
maxIsPreferred = true;
}
else if (type.equals("image"))
{
String src = (String) atts.getAttribute(HTML.Attribute.SRC);
JButton b;
try
{
URL base = ((HTMLDocument) el.getDocument()).getBase();
URL srcURL = new URL(base, src);
ImageIcon icon = new ImageIcon(srcURL);
b = new JButton(icon);
}
catch (MalformedURLException ex)
{
b = new JButton(src);
}
if (model != null)
{
b.setModel((ButtonModel) model);
b.addActionListener(this);
}
comp = b;
maxIsPreferred = true;
}
else if (type.equals("password"))
{
int size = HTML.getIntegerAttributeValue(atts, HTML.Attribute.SIZE,
-1);
JTextField tf = new JPasswordField();
if (size > 0)
tf.setColumns(size);
else
tf.setColumns(20);
if (model != null)
tf.setDocument((Document) model);
String value = (String) atts.getAttribute(HTML.Attribute.VALUE);
if (value != null)
tf.setText(value);
tf.addActionListener(this);
comp = tf;
maxIsPreferred = true;
}
else if (type.equals("radio"))
{
JRadioButton c = new JRadioButton();
if (model != null)
{
boolean sel = atts.getAttribute(HTML.Attribute.CHECKED) != null;
((JToggleButton.ToggleButtonModel) model).setSelected(sel);
c.setModel((ButtonModel) model);
}
comp = c;
maxIsPreferred = true;
}
else if (type.equals("reset"))
{
String value = (String) atts.getAttribute(HTML.Attribute.VALUE);
if (value == null)
value = UIManager.getString("FormView.resetButtonText");
JButton b = new JButton(value);
if (model != null)
{
b.setModel((ButtonModel) model);
b.addActionListener(this);
}
comp = b;
maxIsPreferred = true;
}
else if (type.equals("submit"))
{
String value = (String) atts.getAttribute(HTML.Attribute.VALUE);
if (value == null)
value = UIManager.getString("FormView.submitButtonText");
JButton b = new JButton(value);
if (model != null)
{
b.setModel((ButtonModel) model);
b.addActionListener(this);
}
comp = b;
maxIsPreferred = true;
}
else if (type.equals("text"))
{
int size = HTML.getIntegerAttributeValue(atts, HTML.Attribute.SIZE,
-1);
JTextField tf = new JTextField();
if (size > 0)
tf.setColumns(size);
else
tf.setColumns(20);
if (model != null)
tf.setDocument((Document) model);
String value = (String) atts.getAttribute(HTML.Attribute.VALUE);
if (value != null)
tf.setText(value);
tf.addActionListener(this);
comp = tf;
maxIsPreferred = true;
}
}
else if (tag == HTML.Tag.TEXTAREA)
{
JTextArea textArea = new JTextArea((Document) model);
int rows = HTML.getIntegerAttributeValue(atts, HTML.Attribute.ROWS, 1);
textArea.setRows(rows);
int cols = HTML.getIntegerAttributeValue(atts, HTML.Attribute.COLS, 20);
textArea.setColumns(cols);
maxIsPreferred = true;
comp = new JScrollPane(textArea,
JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,
JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
}
// FIXME: Implement the remaining components.
return comp;
}
/**
* Determines the maximum span for this view on the specified axis.
*
* @param axis the axis along which to determine the span
*
* @return the maximum span for this view on the specified axis
*
* @throws IllegalArgumentException if the axis is invalid
*/
public float getMaximumSpan(int axis)
{
float span;
if (maxIsPreferred)
span = getPreferredSpan(axis);
else
span = super.getMaximumSpan(axis);
return span;
}
/**
* Processes an action from the Swing component.
*
* If the action comes from a submit button, the form is submitted by calling
* {@link #submitData}. In the case of a reset button, the form is reset to
* the original state. If the action comes from a password or text field,
* then the input focus is transferred to the next input element in the form,
* unless this text/password field is the last one, in which case the form
* is submitted.
*
* @param ev the action event
*/
public void actionPerformed(ActionEvent ev)
{
Element el = getElement();
Object tag = el.getAttributes().getAttribute(StyleConstants.NameAttribute);
if (tag.equals(HTML.Tag.INPUT))
{
AttributeSet atts = el.getAttributes();
String type = (String) atts.getAttribute(HTML.Attribute.TYPE);
if (type.equals("submit"))
submitData(""); // FIXME: How to fetch the actual form data?
}
// FIXME: Implement the remaining actions.
}
/**
* Submits the form data. A separate thread is created to do the
* transmission.
*
* @param data the form data
*/
protected void submitData(String data)
{
// FIXME: Implement this.
}
/**
* Submits the form data in response to a click on a
* <input type="image"> element.
*
* @param imageData the mouse click coordinates
*/
protected void imageSubmit(String imageData)
{
// FIXME: Implement this.
}
/**
* Determines the image data that should be submitted in response to a
* mouse click on a image. This is either 'x=&y=' if the name
* attribute of the element is null or '' or
* .x=&.y=' when the name attribute is not empty.
*
* @param p the coordinates of the mouseclick
*/
String getImageData(Point p)
{
String name = (String) getElement().getAttributes()
.getAttribute(HTML.Attribute.NAME);
String data;
if (name == null || name.equals(""))
{
data = "x=" + p.x + "&y=" + p.y;
}
else
{
data = name + ".x=" + p.x + "&" + name + ".y=" + p.y;
}
return data;
}
}