com.google.gwt.cell.client

Class AbstractInputCell<C,V>

java.lang.Object

com.google.gwt.cell.client.AbstractCell<C>

com.google.gwt.cell.client.AbstractEditableCell<C,V>

com.google.gwt.cell.client.AbstractInputCell<C,V>

Type Parameters:

C - the type that this Cell represents

V - the data type of the view data state

All Implemented Interfaces:

Cell<C>

Direct Known Subclasses:

SelectionCell, TextInputCell

public abstract class AbstractInputCell<C,V>
extends AbstractEditableCell<C,V>

An AbstractCell used to render input elements that can receive focus.

Nested Class Summary

Nested classes/interfaces inherited from interface com.google.gwt.cell.client.Cell

Cell.Context

Constructor Summary

Constructors

Constructor and Description
AbstractInputCell(Set<String> consumedEvents) Construct a new AbstractInputCell with the specified consumed events.
AbstractInputCell(String... consumedEvents) Construct a new AbstractInputCell with the specified consumed events.

Method Summary

Methods

Modifier and Type	Method and Description
protected void	finishEditing(Element parent, C value, Object key, ValueUpdater<C> valueUpdater) Call this method when editing is complete.
protected Element	getInputElement(Element parent) Get the input element.
boolean	isEditing(Cell.Context context, Element parent, C value) Returns true if the cell is currently editing the data identified by the given element and key.
void	onBrowserEvent(Cell.Context context, Element parent, C value, NativeEvent event, ValueUpdater<C> valueUpdater) Handle a browser event that took place within the cell.
protected void	onEnterKeyDown(Cell.Context context, Element parent, C value, NativeEvent event, ValueUpdater<C> valueUpdater) Called when the user triggers a keydown event with the ENTER key while focused on the cell.
boolean	resetFocus(Cell.Context context, Element parent, C value) Reset focus on the Cell.

Methods inherited from class com.google.gwt.cell.client.AbstractEditableCell

clearViewData, getViewData, setViewData

Methods inherited from class com.google.gwt.cell.client.AbstractCell

dependsOnSelection, getConsumedEvents, handlesSelection, render, setValue

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, toString

Constructor Detail

AbstractInputCell

public AbstractInputCell(String... consumedEvents)

Construct a new AbstractInputCell with the specified consumed events.

Parameters:

consumedEvents - the events that this cell consumes

AbstractInputCell

public AbstractInputCell(Set<String> consumedEvents)

Construct a new AbstractInputCell with the specified consumed events.

Parameters:

consumedEvents - the events that this cell consumes

Method Detail

isEditing

public boolean isEditing(Cell.Context context,
                Element parent,
                C value)

Description copied from class: AbstractEditableCell

Returns true if the cell is currently editing the data identified by the given element and key. While a cell is editing, widgets containing the cell may choose to pass keystrokes directly to the cell rather than using them for navigation purposes.

Specified by:

isEditing in interface Cell<C>

Specified by:

isEditing in class AbstractEditableCell<C,V>

Parameters:

context - the Context of the cell

parent - the parent Element

value - the value associated with the cell

Returns:

true if the cell is in edit mode

onBrowserEvent

public void onBrowserEvent(Cell.Context context,
                  Element parent,
                  C value,
                  NativeEvent event,
                  ValueUpdater<C> valueUpdater)

Description copied from class: AbstractCell

Handle a browser event that took place within the cell. The default implementation returns null.

If you override this method to add support for events, remember to pass the event types that the cell expects into the constructor.

Specified by:

onBrowserEvent in interface Cell<C>

Overrides:

onBrowserEvent in class AbstractCell<C>

Parameters:

context - the Cell.Context of the cell

parent - the parent Element

value - the value associated with the cell

event - the native browser event

valueUpdater - a ValueUpdater, or null if not specified

resetFocus

public boolean resetFocus(Cell.Context context,
                 Element parent,
                 C value)

Description copied from class: AbstractCell

Reset focus on the Cell. This method is called if the cell has focus when it is refreshed.

This method is a no-op and returns false. If your cell is editable or can be focused by the user, override this method to reset focus when the containing widget is refreshed.

Specified by:

resetFocus in interface Cell<C>

Overrides:

resetFocus in class AbstractCell<C>

Parameters:

context - the Cell.Context of the cell

parent - the parent Element

value - the value associated with the cell

Returns:

true if focus is taken, false if not

finishEditing

protected void finishEditing(Element parent,
                 C value,
                 Object key,
                 ValueUpdater<C> valueUpdater)

Call this method when editing is complete.

Parameters:

parent - the parent Element

value - the value associated with the cell

key - the unique key associated with the row object

valueUpdater - the value update to fire

getInputElement

protected Element getInputElement(Element parent)

Get the input element.

Parameters:

parent - the cell parent element

Returns:

the input element

onEnterKeyDown

protected void onEnterKeyDown(Cell.Context context,
                  Element parent,
                  C value,
                  NativeEvent event,
                  ValueUpdater<C> valueUpdater)

Description copied from class: AbstractCell

Called when the user triggers a keydown event with the ENTER key while focused on the cell. If your cell interacts with the user, you should override this method to provide a consistent user experience. Your widget must consume keydown events for this method to be called.

Overrides:

onEnterKeyDown in class AbstractCell<C>

Parameters:

context - the Context of the cell

parent - the parent Element

value - the value associated with the cell

event - the native browser event

valueUpdater - a ValueUpdater, or null if not specified