Package com.google.gwt.cell.client

Class CheckboxCell

java.lang.Object

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

com.google.gwt.cell.client.AbstractEditableCell<Boolean,Boolean>

com.google.gwt.cell.client.CheckboxCell

All Implemented Interfaces:

Cell<Boolean>

public class CheckboxCell
extends AbstractEditableCell<Boolean,Boolean>

A Cell used to render a checkbox. The value of the checkbox may be toggled using the ENTER key as well as via mouse click.

Nested Class Summary

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

Cell.Context

Constructor Summary

Constructors

Constructor	Description
CheckboxCell()	Construct a new CheckboxCell.
CheckboxCell(boolean isSelectBox)	Deprecated. use CheckboxCell(boolean, boolean) instead
CheckboxCell(boolean dependsOnSelection, boolean handlesSelection)	Construct a new CheckboxCell that optionally controls selection.

Method Summary

Modifier and Type	Method	Description
boolean	dependsOnSelection()	Check if this cell depends on the selection state.
boolean	handlesSelection()	Check if this cell handles selection.
boolean	isEditing(Cell.Context context, Element parent, Boolean 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, Boolean value, NativeEvent event, ValueUpdater<Boolean> valueUpdater)	Handle a browser event that took place within the cell.
void	render(Cell.Context context, Boolean value, SafeHtmlBuilder sb)	Render a cell as HTML into a SafeHtmlBuilder, suitable for passing to Element.setInnerHTML(String) on a container element.

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

clearViewData, getViewData, setViewData

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

getConsumedEvents, onEnterKeyDown, resetFocus, setValue

Methods inherited from class java.lang.Object

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

Constructor Details

CheckboxCell

public CheckboxCell()

Construct a new CheckboxCell.

CheckboxCell

@Deprecated
public CheckboxCell(boolean isSelectBox)

Deprecated.

use CheckboxCell(boolean, boolean) instead

Construct a new CheckboxCell that optionally controls selection.

Parameters:

isSelectBox - true if the cell controls the selection state

CheckboxCell

public CheckboxCell(boolean dependsOnSelection,
 boolean handlesSelection)

Construct a new CheckboxCell that optionally controls selection.

Parameters:

dependsOnSelection - true if the cell depends on the selection state

handlesSelection - true if the cell modifies the selection state

Method Details

dependsOnSelection

public boolean dependsOnSelection()

Description copied from interface: Cell

Check if this cell depends on the selection state.

Specified by:

dependsOnSelection in interface Cell<Boolean>

Overrides:

dependsOnSelection in class AbstractCell<Boolean>

Returns:

true if dependent on selection, false if not

handlesSelection

public boolean handlesSelection()

Description copied from interface: Cell

Check if this cell handles selection. If the cell handles selection, then its container should not automatically handle selection.

Specified by:

handlesSelection in interface Cell<Boolean>

Overrides:

handlesSelection in class AbstractCell<Boolean>

Returns:

true if the cell handles selection, false if not

isEditing

public boolean isEditing(Cell.Context context,
 Element parent,
 Boolean 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<Boolean>

Specified by:

isEditing in class AbstractEditableCell<Boolean,Boolean>

Parameters:

context - the Cell.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,
 Boolean value,
 NativeEvent event,
 ValueUpdater<Boolean> 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<Boolean>

Overrides:

onBrowserEvent in class AbstractCell<Boolean>

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

render

public void render(Cell.Context context,
 Boolean value,
 SafeHtmlBuilder sb)

Description copied from interface: Cell

Render a cell as HTML into a SafeHtmlBuilder, suitable for passing to Element.setInnerHTML(String) on a container element.

Note: If your cell contains natively focusable elements, such as buttons or input elements, be sure to set the tabIndex to -1 so that they do not steal focus away from the containing widget.

Specified by:

render in interface Cell<Boolean>

Specified by:

render in class AbstractCell<Boolean>

Parameters:

context - the Cell.Context of the cell

value - the cell value to be rendered

sb - the SafeHtmlBuilder to be written to