com.google.gwt.gadgets.client
Class Gadget<T extends UserPreferences>

java.lang.Object
  com.google.gwt.gadgets.client.Gadget<T>

Type Parameters:

T - the type of UserPreferences the Gadget expects.

All Implemented Interfaces:

com.google.gwt.core.client.EntryPoint

Direct Known Subclasses:

GadgetAds

public abstract class Gadget<T extends UserPreferences>
extends java.lang.Object
implements com.google.gwt.core.client.EntryPoint

A base class for writing a Google Gadget.

Writing a Gadget:

1. Declare a subtype of Gadget (e.g. public class MyGadget extends Gadget) that is default instantiable.
2. If the Gadget requires access to features of the container, it should implement any of the NeedsFoo interfaces.
3. At runtime, all feature setters will be called strictly before init(UserPreferences). The order in which the setters are called is undefined.

Access to user preferences is provided through a user-defined subtype of the UserPreferences interface. Each preference should be defined as a zero-argument method, returning the desired type of UserPreferences.Preference. The Gadget type should be parameterized with the specific UserPreferences subtype, which will be provided to the init(UserPreferences) method.

Nested Class Summary

static interface	Gadget.AllowHtmlQuirksMode Annotation to turn on browser's quirks mode.
static interface	Gadget.Content Specifies which View content sections should be associated with this Gadget.
static interface	Gadget.ContentType Specifies the type of content and the list of views.
static interface	Gadget.GadgetLocale This annotation allows Locale tags to be added to the module specification.
static interface	Gadget.InjectContent Enables developers to define hand-written content that is injected into the gadget manifest file.
static interface	Gadget.InjectModulePrefs Enables developers to define hand-written content for the ModulePrefs section of the gadget manifset file.
static interface	Gadget.ModulePrefs Defines the preferences associated with the gadget.
static interface	Gadget.UseLongManifestName Annotation to turn on long filename generation.

Constructor Summary

protected

Gadget()

Method Summary

protected abstract void	init(T preferences) This method will be called after all of the feature initialization hooks have been called.
void	onModuleLoad() This is used by the Gadget framework for low-level bootstrap functions.

Methods inherited from class java.lang.Object

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

Constructor Detail

Gadget

protected Gadget()

Method Detail

onModuleLoad

public final void onModuleLoad()

This is used by the Gadget framework for low-level bootstrap functions.

Specified by:

onModuleLoad in interface com.google.gwt.core.client.EntryPoint

init

protected abstract void init(T preferences)

This method will be called after all of the feature initialization hooks have been called.