no.g9.client.event

Interface G9ValueState

All Known Implementing Classes:

G9ButtonGroup, G9ButtonGroup.ComponentGroup, G9CheckBox, G9ComboBox, G9PasswordField, G9RadioButton, G9TextArea, G9TextField

public interface G9ValueState

The value change interface, declaring various methods common to all components capable of fiering a value changed event.

Method Summary

Modifier and Type	Method and Description
void	addValueChangedListener(G9ValueChangedListener listener) Adds a change listener to this component.
void	display(Object o) Updates the displayed value of the component, without affecting the state of the component.
Object	getInitialValue() Returns the initial displayed value.
boolean	isChanged() Checks if the currently displayed value is the same as the initial value.
void	resetState() Forces the currently displayed value to be considered the old value.
void	setInitialValue(Object value) Sets the initial value to be the specified value.

Method Detail

addValueChangedListener

void addValueChangedListener(G9ValueChangedListener listener)

Adds a change listener to this component. The change listener will be notified when a value changed event occurs.

Parameters:

listener - the listener to add

resetState

void resetState()

Forces the currently displayed value to be considered the old value.

isChanged

boolean isChanged()

Checks if the currently displayed value is the same as the initial value. The initial value is updated when the component is updated programaticly.

Returns:

true if the displayed value differs from the initial value.

display

void display(Object o)

Updates the displayed value of the component, without affecting the state of the component.

Parameters:

o - the new value to display

getInitialValue

Object getInitialValue()

Returns the initial displayed value.

Returns:

the initial displayed value

setInitialValue

void setInitialValue(Object value)

Sets the initial value to be the specified value.

Parameters:

value - the (new) initial value.