Class symantec.itools.awt.InvisibleButton

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Class symantec.itools.awt.InvisibleButton

Object
   |
   +----Component
           |
           +----symantec.itools.awt.InvisibleButton

public class InvisibleButton
extends Component

Use this component to create an invisible area, usually within an image, that initiates an action when clicked. Specifically, use InvisibleButton to

· Create a "hot spot" on an image or on a component.

· Accept or yield focus.

· Respond to a user event.

· Send an action event to another component.

Button tips:

· Buttons accept and yield focus automatically by default.

· Buttons accept clicked events automatically by default.

· To send an action event to another component, use the Interaction Wizard. Optionally, you can override the InvisibleButton’s click event in project source code.

· Overlapping components - browsers handle components layered on each other differently. Some browsers display/layer the InvisibleButtons on top of a particular component, while others display them underneath. Therefore, it often requires two sets of InvisibleButtons to ensure that one is "on top"; one on top of the particular component and the other underneath.

Version:: 1.1, July 14, 1997
Author:: Symantec

pressed: True if the button is currently pressed.

symantec.itools.awt.InvisibleButton(): Constructs an InvisibleButton.

addActionListener(ActionListener): Adds the specified action listener to receive action events from this button.
addNotify(): Tells this component that it has been added to a container.
addPropertyChangeListener(PropertyChangeListener): Adds a listener for all event changes.
addVetoableChangeListener(VetoableChangeListener): Adds a vetoable listener for all event changes.
getActionCommand()
removeActionListener(ActionListener): Removes the specified action listener so it no longer receives action events from this button.
removeNotify(): Tells this component that it is being removed from a container.
removePropertyChangeListener(PropertyChangeListener): Removes a listener for all event changes.
removeVetoableChangeListener(VetoableChangeListener): Removes a vetoable listener for all event changes.
setActionCommand(String): Sets the command name of the action event fired by this button.
sourceActionEvent(): Fire an action event to the listeners

pressed

protected transient boolean pressed

True if the button is currently pressed.

InvisibleButton

public InvisibleButton()

Constructs an InvisibleButton.

addActionListener

public synchronized void addActionListener(ActionListener l)

Adds the specified action listener to receive action events from this button.

Parameters:: l - the action listener

addNotify

public synchronized void addNotify()

Tells this component that it has been added to a container. This is a standard Java AWT method which gets called by the AWT when this component is added to a container. Typically, it is used to create this component's peer. It has been overridden here to hook-up event listeners.

Overrides:: addNotify in class Component
See Also:: removeNotify

addPropertyChangeListener

public synchronized void addPropertyChangeListener(PropertyChangeListener listener)

Adds a listener for all event changes.

Parameters:: PropertyChangeListener - listener the listener to add.
See Also:: removePropertyChangeListener

addVetoableChangeListener

public synchronized void addVetoableChangeListener(VetoableChangeListener listener)

Adds a vetoable listener for all event changes.

Parameters:: VetoableChangeListener - listener the listener to add.
See Also:: removeVetoableChangeListener

getActionCommand

public java.lang.String getActionCommand()

Returns:: the command name of the action event fired by this button.

removeActionListener

public synchronized void removeActionListener(ActionListener l)

Removes the specified action listener so it no longer receives action events from this button.

Parameters:: l - the action listener

removeNotify

public synchronized void removeNotify()

Tells this component that it is being removed from a container. This is a standard Java AWT method which gets called by the AWT when this component is removed from a container. Typically, it is used to destroy the peers of this component and all its subcomponents. It has been overridden here to unhook event listeners.

Overrides:: removeNotify in class Component
See Also:: addNotify

removePropertyChangeListener

public synchronized void removePropertyChangeListener(PropertyChangeListener listener)

Removes a listener for all event changes.

Parameters:: PropertyChangeListener - listener the listener to remove.
See Also:: addPropertyChangeListener

removeVetoableChangeListener

public synchronized void removeVetoableChangeListener(VetoableChangeListener listener)

Removes a vetoable listener for all event changes.

Parameters:: VetoableChangeListener - listener the listener to remove.
See Also:: addVetoableChangeListener

setActionCommand

public void setActionCommand(String command) throws PropertyVetoException

Sets the command name of the action event fired by this button.

Parameters:: command - the name of the action event command fired by this button
Throws: PropertyVetoException: if the specified property value is unacceptable

sourceActionEvent

protected void sourceActionEvent()

Fire an action event to the listeners

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