hudson.tasks

Class UserAvatarResolver

java.lang.Object

hudson.tasks.UserAvatarResolver

All Implemented Interfaces:

ExtensionPoint

public abstract class UserAvatarResolver
extends Object
implements ExtensionPoint

Infers avatar image URLs for users

This is an extension point of Jenkins. Plugins that contribute a new implementation of this class should put Extension on your implementation class, like this:

 @Extension
 class MyUserAvatarResolver extends UserAvatarResolver {
   ...
 }
 

Since:

1.434

Author:

Erik Ramfelt

Nested Class Summary

Nested classes/interfaces inherited from interface hudson.ExtensionPoint

ExtensionPoint.LegacyInstancesAreScopedToHudson

Constructor Summary

Constructors

Constructor and Description
UserAvatarResolver()

Method Summary

Modifier and Type	Method and Description
static ExtensionList<UserAvatarResolver>	all() Returns all the registered UserAvatarResolver descriptors.
abstract String	findAvatarFor(User u, int width, int height) Finds an avatar image URL string for a user.
static String	resolve(User u, String avatarSize) Resolve an avatar image URL string for the user.
static String	resolveOrNull(User u, String avatarSize) Like resolve(hudson.model.User, java.lang.String) but returns null rather than a fallback URL in case there is no special avatar.

Methods inherited from class java.lang.Object

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

Constructor Detail

UserAvatarResolver

public UserAvatarResolver()

Method Detail

findAvatarFor

public abstract String findAvatarFor(User u,
                                     int width,
                                     int height)

Finds an avatar image URL string for a user.

This method is called when a web page is going to show an avatar for a User.

When multiple resolvers are installed, they are consulted in order and the search will be over when an avatar is found by someone.

Since UserAvatarResolver is singleton, this method can be invoked concurrently from multiple threads.

Parameters:

u - the user

width - the preferred width of the avatar

height - the preferred height of the avatar.

Returns:

null if the inference failed.

resolve

public static String resolve(User u,
                             String avatarSize)

Resolve an avatar image URL string for the user. Note that this method must be called from an HTTP request to be reliable; else use resolveOrNull(hudson.model.User, java.lang.String).

Parameters:

u - user

avatarSize - the preferred image size, "[width]x[height]"

Returns:

a URL string for a user Avatar image.

resolveOrNull

@CheckForNull
public static String resolveOrNull(User u,
                                                 String avatarSize)

Like resolve(hudson.model.User, java.lang.String) but returns null rather than a fallback URL in case there is no special avatar.

Since:

1.518

all

public static ExtensionList<UserAvatarResolver> all()

Returns all the registered UserAvatarResolver descriptors.