com.facebook.rendercore.extensions

Class RenderCoreExtension<Input,State>

java.lang.Object

com.facebook.rendercore.extensions.RenderCoreExtension<Input,State>

Type Parameters:

Input - the state the extension operates on.

Direct Known Subclasses:

IncrementalMountRenderCoreExtension, VisibilityExtension

public class RenderCoreExtension<Input,State>
extends java.lang.Object

The base class for all RenderCore Extensions.

Constructor Summary

Constructors

Constructor and Description
RenderCoreExtension()

Method Summary

Modifier and Type	Method and Description
static void	afterMount(MountDelegate mountDelegate) Calls MountExtension.afterMount(ExtensionState) for each RenderCoreExtension that has a mount phase.
static void	beforeMount(Host host, MountDelegate mountDelegate, java.util.List<<any>> results) Calls MountExtension.beforeMount(ExtensionState, Object, Rect) for each RenderCoreExtension that has a mount phase.
Input	createInput() Should return a new Input > to which the LayoutResultVisitor can write into.
LayoutResultVisitor<? extends Input>	getLayoutVisitor() The extension can optionally return a LayoutResultVisitor for every layout pass which will visit every LayoutResult.
MountExtension<? extends Input,State>	getMountExtension() The extension can optionally return a MountExtension which can be used to augment the RenderCore's mounting phase.
static void	notifyVisibleBoundsChanged(MountDelegateTarget target, Host host) Calls MountExtension.onVisibleBoundsChanged(ExtensionState, Rect) for each RenderCoreExtension that has a mount phase.
static void	recursivelyNotifyVisibleBoundsChanged(java.lang.Object content)
static void	recursivelyNotifyVisibleBoundsChanged(java.lang.Object content, Systracer tracer)
static boolean	shouldUpdate(java.util.List<<any>> current, java.util.List<<any>> next) returns false iff the results have the same RenderCoreExtensions.

Methods inherited from class java.lang.Object

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

Constructor Detail

RenderCoreExtension

public RenderCoreExtension()

Method Detail

getLayoutVisitor

public LayoutResultVisitor<? extends Input> getLayoutVisitor()

The extension can optionally return a LayoutResultVisitor for every layout pass which will visit every LayoutResult. The visitor should be functional and immutable.

Returns:

a LayoutResultVisitor.

getMountExtension

public MountExtension<? extends Input,State> getMountExtension()

The extension can optionally return a MountExtension which can be used to augment the RenderCore's mounting phase. The Input > collected in the latest layout pass will be passed to the extension before mount.

Returns:

a MountExtension.

createInput

public Input createInput()

Should return a new Input > to which the LayoutResultVisitor can write into.

Returns:

A new Input > for LayoutResultVisitor to write into.

beforeMount

public static void beforeMount(Host host,
                               MountDelegate mountDelegate,
                               java.util.List<<any>> results)

Calls MountExtension.beforeMount(ExtensionState, Object, Rect) for each RenderCoreExtension that has a mount phase.

Parameters:

host - The Host of the extensions.

mountDelegate - The MountDelegate.

results - A map of RenderCoreExtension to their results from the layout phase.

afterMount

public static void afterMount(MountDelegate mountDelegate)

Calls MountExtension.afterMount(ExtensionState) for each RenderCoreExtension that has a mount phase.

Parameters:

mountDelegate - The MountDelegate.

notifyVisibleBoundsChanged

public static void notifyVisibleBoundsChanged(MountDelegateTarget target,
                                              Host host)

Calls MountExtension.onVisibleBoundsChanged(ExtensionState, Rect) for each RenderCoreExtension that has a mount phase.

Parameters:

host - The Host of the extensions

shouldUpdate

public static boolean shouldUpdate(java.util.List<<any>> current,
                                   java.util.List<<any>> next)

returns false iff the results have the same RenderCoreExtensions.

recursivelyNotifyVisibleBoundsChanged

public static void recursivelyNotifyVisibleBoundsChanged(java.lang.Object content)

recursivelyNotifyVisibleBoundsChanged

public static void recursivelyNotifyVisibleBoundsChanged(java.lang.Object content,
                                                         Systracer tracer)