Package com.bumptech.glide.request

Interface RequestCoordinator

All Known Implementing Classes:

ErrorRequestCoordinator, ThumbnailRequestCoordinator

public interface RequestCoordinator

An interface for coordinating multiple requests with the same Target.

To avoid deadlock, implemenations must not call into individual Requests to determine their state (ie do not call Request.isCleared() or Request.isRunning() etc). Instead use RequestCoordinator.RequestState and the various methods available on this interface and Request to track states manually.

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static enum	RequestCoordinator.RequestState	A simple state enum to keep track of the states of individual subrequests.

Method Summary

Modifier and Type	Method	Description
boolean	canNotifyCleared(Request request)	Returns true if the Request can clear the Target.
boolean	canNotifyStatusChanged(Request request)	Returns true if the Request can display a placeholder.
boolean	canSetImage(Request request)	Returns true if the Request can display a loaded bitmap.
RequestCoordinator	getRoot()	Returns the top most parent RequestCoordinator.
boolean	isAnyResourceSet()	Returns true if any coordinated Request has successfully completed.
void	onRequestFailed(Request request)	Must be called when a Request coordinated by this object fails.
void	onRequestSuccess(Request request)	Must be called when a Request coordinated by this object completes successfully.

Method Details

canSetImage

boolean canSetImage(Request request)

Returns true if the Request can display a loaded bitmap.

Parameters:

request - The Request requesting permission to display a bitmap.

canNotifyStatusChanged

boolean canNotifyStatusChanged(Request request)

Returns true if the Request can display a placeholder.

Parameters:

request - The Request requesting permission to display a placeholder.

canNotifyCleared

boolean canNotifyCleared(Request request)

Returns true if the Request can clear the Target.

isAnyResourceSet

boolean isAnyResourceSet()

Returns true if any coordinated Request has successfully completed.

See Also:

• Request.isComplete()

onRequestSuccess

void onRequestSuccess(Request request)

Must be called when a Request coordinated by this object completes successfully.

onRequestFailed

void onRequestFailed(Request request)

Must be called when a Request coordinated by this object fails.

getRoot

RequestCoordinator getRoot()

Returns the top most parent RequestCoordinator.