com.google.gwt.cell.client

Class ImageLoadingCell

java.lang.Object

com.google.gwt.cell.client.AbstractCell<java.lang.String>

com.google.gwt.cell.client.ImageLoadingCell

All Implemented Interfaces:

Cell<java.lang.String>

public class ImageLoadingCell
extends AbstractCell<java.lang.String>

An AbstractCell used to render an image. A loading indicator is used until the image is fully loaded. The String value is the url of the image.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ImageLoadingCell.DefaultRenderers The default SafeHtmlRenderers.
static interface	ImageLoadingCell.Renderers The renderers used by this cell.
(package private) static interface	ImageLoadingCell.Resources The images used by the ImageLoadingCell.DefaultRenderers.
(package private) static interface	ImageLoadingCell.Template

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

Cell.Context

Constructor Summary

Constructors

Constructor and Description
ImageLoadingCell() Construct an ImageResourceCell using the ImageLoadingCell.DefaultRenderers.
ImageLoadingCell(ImageLoadingCell.Renderers renderers) Construct an ImageResourceCell using the specified SafeHtmlRenderers.

Method Summary

Modifier and Type	Method and Description
void	onBrowserEvent(Cell.Context context, Element parent, java.lang.String value, NativeEvent event, ValueUpdater<java.lang.String> valueUpdater) Handle a browser event that took place within the cell.
void	render(Cell.Context context, java.lang.String 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.AbstractCell

dependsOnSelection, getConsumedEvents, handlesSelection, isEditing, onEnterKeyDown, resetFocus, setValue

Methods inherited from class java.lang.Object

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

Constructor Detail

ImageLoadingCell

public ImageLoadingCell()

Construct an ImageResourceCell using the ImageLoadingCell.DefaultRenderers.

The ImageLoadingCell.DefaultRenderers will be constructed using GWT.create(Class), which allows you to replace the class using a deferred binding.

ImageLoadingCell

public ImageLoadingCell(ImageLoadingCell.Renderers renderers)

Construct an ImageResourceCell using the specified SafeHtmlRenderers.

Parameters:

renderers - an instance of Renderers

Method Detail

onBrowserEvent

public void onBrowserEvent(Cell.Context context,
                           Element parent,
                           java.lang.String value,
                           NativeEvent event,
                           ValueUpdater<java.lang.String> 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<java.lang.String>

Overrides:

onBrowserEvent in class AbstractCell<java.lang.String>

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,
                   java.lang.String 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<java.lang.String>

Specified by:

render in class AbstractCell<java.lang.String>

Parameters:

context - the Cell.Context of the cell

value - the cell value to be rendered

sb - the SafeHtmlBuilder to be written to