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/OpenJDK 21

Class FormView

java.lang.Object
javax.swing.text.View
javax.swing.text.ComponentView
javax.swing.text.html.FormView
All Implemented Interfaces:
ActionListener, EventListener, SwingConstants 
public class FormView extends ComponentView implements ActionListener
Component decorator that implements the view interface for form elements, <input>, <textarea>, and <select>. The model for the component is stored as an attribute of the element (using StyleConstants.ModelAttribute), and is used to build the component of the view. The type of the model is assumed to of the type that would be set by HTMLDocument.HTMLReader.FormAction. If there are multiple views mapped over the document, they will share the embedded component models.

The following table shows what components get built by this view.

Shows what components get built by this view
Element Type Component built
input, type button JButton
input, type checkbox JCheckBox
input, type image JButton
input, type password JPasswordField
input, type radio JRadioButton
input, type reset JButton
input, type submit JButton
input, type text JTextField
select, size > 1 or multiple attribute defined JList in a JScrollPane
select, size unspecified or 1 JComboBox
textarea JTextArea in a JScrollPane
input, type file JTextField

Nested Class Summary

Modifier and Type Class Description
protected class  FormView.MouseEventListener
MouseEventListener class to handle form submissions when an input with type equal to image is clicked on.

Field Summary

Modifier and Type Field Description
static final String RESET
Deprecated.
As of 1.3, value comes from UIManager UIManager property FormView.resetButtonText
static final String SUBMIT
Deprecated.
As of 1.3, value now comes from UIManager property FormView.submitButtonText

Fields declared in class javax.swing.text.View

BadBreakWeight, ExcellentBreakWeight, ForcedBreakWeight, GoodBreakWeight, X_AXIS, Y_AXIS

Fields declared in interface javax.swing.SwingConstants

BOTTOM, CENTER, EAST, HORIZONTAL, LEADING, LEFT, NEXT, NORTH, NORTH_EAST, NORTH_WEST, PREVIOUS, RIGHT, SOUTH, SOUTH_EAST, SOUTH_WEST, TOP, TRAILING, VERTICAL, WEST

Constructor Summary

Constructor Description
FormView(Element elem)
Creates a new FormView object.

Method Summary

Modifier and Type Method Description
void actionPerformed(ActionEvent evt)
Responsible for processing the ActionEvent.
protected Component createComponent()
Create the component.
float getMaximumSpan(int axis)
Determines the maximum span for this view along an axis.
protected void imageSubmit(String imageData)
This method is called to submit a form in response to a click on an image -- an <INPUT> form element of type "image".
protected void submitData(String data)
This method is responsible for submitting the form data.

Methods declared in class javax.swing.text.ComponentView

getAlignment, getComponent, getMinimumSpan, getPreferredSpan, modelToView, paint, setParent, viewToModel

Methods declared in class javax.swing.text.View

append, breakView, changedUpdate, createFragment, forwardUpdate, forwardUpdateToView, getAttributes, getBreakWeight, getChildAllocation, getContainer, getDocument, getElement, getEndOffset, getGraphics, getNextVisualPositionFrom, getParent, getResizeWeight, getStartOffset, getToolTipText, getView, getViewCount, getViewFactory, getViewIndex, getViewIndex, insert, insertUpdate, isVisible, modelToView, modelToView, preferenceChanged, remove, removeAll, removeUpdate, replace, setSize, updateChildren, updateLayout, viewToModel

Methods declared in class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

SUBMIT

@Deprecated public static final String SUBMIT
Deprecated.
As of 1.3, value now comes from UIManager property FormView.submitButtonText
If a value attribute is not specified for a FORM input element of type "submit", then this default string is used.

RESET

@Deprecated public static final String RESET
Deprecated.
As of 1.3, value comes from UIManager UIManager property FormView.resetButtonText
If a value attribute is not specified for a FORM input element of type "reset", then this default string is used.

Constructor Details

FormView

public FormView(Element elem)
Creates a new FormView object.
Parameters:
elem - the element to decorate

Method Details

createComponent

protected Component createComponent()
Create the component. This is basically a big switch statement based upon the tag type and html attributes of the associated element.
Overrides:
createComponent in class ComponentView
Returns:
the component that is associated with this view

getMaximumSpan

public float getMaximumSpan(int axis)
Determines the maximum span for this view along an axis. For certain components, the maximum and preferred span are the same. For others this will return the value returned by Component.getMaximumSize along the axis of interest.
Overrides:
getMaximumSpan in class ComponentView
Parameters:
axis - may be either View.X_AXIS or View.Y_AXIS
Returns:
the span the view would like to be rendered into >= 0. Typically the view is told to render into the span that is returned, although there is no guarantee. The parent may choose to resize or break the view.
Throws:
IllegalArgumentException - for an invalid axis
See Also:

actionPerformed

public void actionPerformed(ActionEvent evt)
Responsible for processing the ActionEvent. If the element associated with the FormView, has a type of "submit", "reset", "text" or "password" then the action is processed. In the case of a "submit" the form is submitted. In the case of a "reset" the form is reset to its original state. In the case of "text" or "password", if the element is the last one of type "text" or "password", the form is submitted. Otherwise, focus is transferred to the next component in the form.
Specified by:
actionPerformed in interface ActionListener
Parameters:
evt - the ActionEvent.

submitData

protected void submitData(String data)
This method is responsible for submitting the form data. A thread is forked to undertake the submission.
Parameters:
data - data to submit

imageSubmit

protected void imageSubmit(String imageData)
This method is called to submit a form in response to a click on an image -- an <INPUT> form element of type "image".
Parameters:
imageData - the mouse click coordinates.

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Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
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https://docs.oracle.com/en/java/javase/21/docs/api/java.desktop/javax/swing/text/html/FormView.html