com.itmill.toolkit.ui
Class Button

java.lang.Object
  com.itmill.toolkit.ui.AbstractComponent
      com.itmill.toolkit.ui.AbstractField
          com.itmill.toolkit.ui.Button

All Implemented Interfaces:

Buffered, BufferedValidatable, Property, Property.Editor, Property.ReadOnlyStatusChangeNotifier, Property.ValueChangeListener, Property.ValueChangeNotifier, Property.Viewer, Validatable, MethodEventSource, Paintable, Sizeable, VariableOwner, Component, Component.Focusable, Field, EventListener

Direct Known Subclasses:

CheckBox

public class Button
extends AbstractField

A generic button component.

Since:

3.0

Version:

5.2.12

Author:

IT Mill Ltd.

Nested Class Summary

class	Button.ClickEvent Click event.
static interface	Button.ClickListener Button click listener

Nested classes/interfaces inherited from class com.itmill.toolkit.ui.AbstractField

AbstractField.ReadOnlyStatusChangeEvent

Nested classes/interfaces inherited from class com.itmill.toolkit.ui.AbstractComponent

AbstractComponent.ComponentErrorEvent, AbstractComponent.ComponentErrorHandler

Nested classes/interfaces inherited from interface com.itmill.toolkit.ui.Field

Field.ValueChangeEvent

Nested classes/interfaces inherited from interface com.itmill.toolkit.data.Buffered

Buffered.SourceException

Nested classes/interfaces inherited from interface com.itmill.toolkit.data.Property

Property.ConversionException, Property.Editor, Property.ReadOnlyException, Property.ReadOnlyStatusChangeListener, Property.ReadOnlyStatusChangeNotifier, Property.ValueChangeListener, Property.ValueChangeNotifier, Property.Viewer

Nested classes/interfaces inherited from interface com.itmill.toolkit.ui.Component

Component.ErrorEvent, Component.ErrorListener, Component.Event, Component.Focusable, Component.Listener

Nested classes/interfaces inherited from interface com.itmill.toolkit.terminal.Paintable

Paintable.RepaintRequestEvent, Paintable.RepaintRequestListener

Field Summary

static String

STYLE_LINK

Fields inherited from interface com.itmill.toolkit.terminal.Sizeable

SIZE_UNDEFINED, UNIT_SYMBOLS, UNITS_CM, UNITS_EM, UNITS_EX, UNITS_INCH, UNITS_MM, UNITS_PERCENTAGE, UNITS_PICAS, UNITS_PIXELS, UNITS_POINTS, UNITS_ROWS

Constructor Summary

Button()
Creates a new push button.

Button(String caption)
Creates a new push button.

Button(String caption, boolean initialState)
Creates a new switch button with initial value.

Button(String caption, Button.ClickListener listener)
Creates a new push button with click listener.

Button(String caption, Object target, String methodName)
Creates a new push button with a method listening button clicks.

Button(String caption, Property dataSource)
Creates a new switch button that is connected to a boolean property.

Method Summary

void	addListener(Button.ClickListener listener) Adds the button click listener.
boolean	booleanValue() Get the boolean value of the button state.
void	changeVariables(Object source, Map variables) Invoked when the value of a variable has changed.
protected void	fireClick() Emits the options change event.
String	getTag() Gets component UIDL tag.
Class	getType() The type of the button as a property.
boolean	isSwitchMode() Checks if it is switchMode.
void	paintContent(PaintTarget target) Paints the content of this component.
void	removeListener(Button.ClickListener listener) Removes the button click listener.
void	setImmediate(boolean immediate) Sets immediate mode.
void	setSwitchMode(boolean switchMode) Sets the switchMode.

Methods inherited from class com.itmill.toolkit.ui.AbstractField

addListener, addListener, addValidator, attach, commit, constructField, discard, fireReadOnlyStatusChange, fireValueChange, focus, getErrorMessage, getPropertyDataSource, getRequiredError, getTabIndex, getValidators, getValue, isEmpty, isInvalidAllowed, isInvalidCommitted, isModified, isReadOnly, isReadThrough, isRequired, isValid, isValidationVisible, isWriteThrough, removeListener, removeListener, removeValidator, setCurrentBufferedSourceException, setInternalValue, setInvalidAllowed, setInvalidCommitted, setPropertyDataSource, setReadOnly, setReadThrough, setRequired, setRequiredError, setTabIndex, setValidationVisible, setValue, setValue, setWriteThrough, toString, validate, valueChange

Methods inherited from class com.itmill.toolkit.ui.AbstractComponent

addListener, addListener, addListener, addListener, addStyleName, childRequestedRepaint, detach, fireComponentErrorEvent, fireComponentEvent, fireEvent, getApplication, getCaption, getComponentError, getData, getDebugId, getDescription, getErrorHandler, getHeight, getHeightUnits, getIcon, getLocale, getParent, getStyle, getStyleName, getWidth, getWidthUnits, getWindow, handleError, isEnabled, isImmediate, isVisible, paint, removeListener, removeListener, removeListener, removeListener, removeListener, removeStyleName, requestRepaint, requestRepaintRequests, setCaption, setComponentError, setData, setDebugId, setDescription, setEnabled, setErrorHandler, setHeight, setHeight, setHeight, setHeightUnits, setIcon, setLocale, setParent, setSizeFull, setSizeUndefined, setStyle, setStyleName, setWidth, setWidth, setWidth, setWidthUnits, setVisible

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.itmill.toolkit.ui.Field

getDescription, setCaption, setDescription

Methods inherited from interface com.itmill.toolkit.ui.Component

addListener, addStyleName, childRequestedRepaint, detach, getApplication, getCaption, getIcon, getLocale, getParent, getStyleName, getWindow, isEnabled, isVisible, removeListener, removeStyleName, setEnabled, setIcon, setParent, setStyleName, setVisible

Methods inherited from interface com.itmill.toolkit.terminal.Paintable

addListener, getDebugId, paint, removeListener, requestRepaint, requestRepaintRequests, setDebugId

Methods inherited from interface com.itmill.toolkit.terminal.VariableOwner

isImmediate

Methods inherited from interface com.itmill.toolkit.terminal.Sizeable

getHeight, getHeightUnits, getWidth, getWidthUnits, setHeight, setHeight, setHeightUnits, setSizeFull, setSizeUndefined, setWidth, setWidth, setWidthUnits

Field Detail

STYLE_LINK

public static final String STYLE_LINK

See Also:

Constant Field Values

Constructor Detail

Button

public Button()

Creates a new push button. The value of the push button is allways false and they are immediate by default.

Button

public Button(String caption)

Creates a new push button. The value of the push button is allways false and they are immediate by default.

Parameters:

caption - the Button caption.

Button

public Button(String caption,
              Button.ClickListener listener)

Creates a new push button with click listener.

Parameters:

caption - the Button caption.

listener - the Button click listener.

Button

public Button(String caption,
              Object target,
              String methodName)

Creates a new push button with a method listening button clicks. Using this method is discouraged because it cannot be checked during compilation. Use Button(String, com.itmill.toolkit.ui.Button.ClickListener) instead. The method must have either no parameters, or only one parameter of Button.ClickEvent type.

Parameters:

caption - the Button caption.

target - the Object having the method for listening button clicks.

methodName - the name of the method in target object, that receives button click events.

Button

public Button(String caption,
              boolean initialState)

Creates a new switch button with initial value.

Parameters:

state - the Initial state of the switch-button.

initialState -

Button

public Button(String caption,
              Property dataSource)

Creates a new switch button that is connected to a boolean property.

Parameters:

state - the Initial state of the switch-button.

dataSource -

Method Detail

getTag

public String getTag()

Gets component UIDL tag.

Specified by:

getTag in class AbstractComponent

Returns:

the Component UIDL tag as string.

paintContent

public void paintContent(PaintTarget target)
                  throws PaintException

Paints the content of this component.

Overrides:

paintContent in class AbstractField

Parameters:

event - the PaintEvent.

Throws:

IOException - if the writing failed due to input/output error.

PaintException - if the paint operation failed.

changeVariables

public void changeVariables(Object source,
                            Map variables)

Invoked when the value of a variable has changed. Button listeners are notified if the button is clicked.

Specified by:

changeVariables in interface VariableOwner

Overrides:

changeVariables in class AbstractField

Parameters:

source -

variables -

isSwitchMode

public boolean isSwitchMode()

Checks if it is switchMode.

Returns:

true if it is in Switch Mode, otherwise false.

setSwitchMode

public void setSwitchMode(boolean switchMode)

Sets the switchMode.

Parameters:

switchMode - The switchMode to set.

booleanValue

public boolean booleanValue()

Get the boolean value of the button state.

Returns:

True iff the button is pressed down or checked.

setImmediate

public void setImmediate(boolean immediate)

Sets immediate mode. Push buttons can not be set in non-immediate mode.

Overrides:

setImmediate in class AbstractComponent

Parameters:

immediate - the boolean value specifying if the component should be in the immediate mode after the call.

See Also:

AbstractComponent.setImmediate(boolean)

getType

public Class getType()

The type of the button as a property.

Specified by:

getType in interface Property

Specified by:

getType in class AbstractField

Returns:

type of the Property

See Also:

Property.getType()

addListener

public void addListener(Button.ClickListener listener)

Adds the button click listener.

Parameters:

listener - the Listener to be added.

removeListener

public void removeListener(Button.ClickListener listener)

Removes the button click listener.

Parameters:

listener - the Listener to be removed.

fireClick

protected void fireClick()

Emits the options change event.