# cp.ui.ElementCache

Provides caching for Element subclasses that want to cache children.

# API Overview

Constructors - API calls which return an object, typically one that offers API methods

ElementCache

Methods - API calls which can only be made on an object returned by a constructor

cachedElement
cacheElement
clean
fetchElement
fetchElements
reset

# API Documentation

# Constructors

# ElementCache


Signature	`cp.ui.ElementCache(parent[, createFn])`
Type	Constructor
Description	Creates and returns a new `ElementCache`, with the specified parent and function which will create new elements on demand. The `createFn` has the signature of `function(parent, ui) -> cp.ui.Element`, and should take the parent provided here and the `axuielement` and return a new `Element` subclass.
Parameters	parent - the parent Element that contains the cached items. createFn - a function that will create new `Element` subclasses based on cached `axuielement` values.
Returns	The new `ElementCache`.
Notes	None
Examples	None
Source	src/extensions/cp/ui/ElementCache.lua line 12

# Methods

# cachedElement


Signature	`cp.ui.ElementCache:cachedElement(ui) -> cp.ui.Element or nil`
Type	Method
Description	Returns the cached Element, if it is present.
Parameters	ui - The `axuielement` it is linked to. If not provided, it will be fetched by calling `Element:UI()`.
Returns	`cp.ui.Element` or `nil`
Notes	None
Examples	None
Source	src/extensions/cp/ui/ElementCache.lua line 61

# cacheElement


Signature	`cp.ui.ElementCache:cacheElement(element[, ui]) -> none`
Type	Method
Description	Caches the provided Element.
Parameters	element - The Element ui - The `axuielement` it is linked to. If not provided, it will be fetched by calling `Element:UI()`.
Returns	None
Notes	None
Examples	None
Source	src/extensions/cp/ui/ElementCache.lua line 81

# clean


Signature	`cp.ui.ElementCache:clean()`
Type	Method
Description	Clears the cache of any invalid (aka dead) items.
Parameters	None
Returns	None
Notes	None
Examples	None
Source	src/extensions/cp/ui/ElementCache.lua line 28

# fetchElement


Signature	`cp.ui.ElementCache:fetchElement(ui) -> cp.ui.Element or nil`
Type	Method
Description	Retrieves the matching Element instance from the cache. If none exists and the `createFn` was provided in the constructor, it will be used to create a new one, which is automatically cached for future reference.
Parameters	ui - The `axuielement` being fetched for.
Returns	`cp.ui.Element` or `nil`
Notes	None
Examples	None
Source	src/extensions/cp/ui/ElementCache.lua line 99

# fetchElements


Signature	`cp.ui.ElementCache:fetchElements(uis) -> table of cp.ui.Elements or nil`
Type	Method
Description	Fetches a list of Element instances linked to the provided `axuielement` list.
Parameters	uis - A `table` of `axuielement` values.
Returns	A `table` of Element values.
Notes	If any of the provided `axuielement` values are either not from the parent, or no longer valid, a `nil` value will be stored in the matching index. Note that in that case, this will break useage of `ipairs` due to leaving holes in the list.
Examples	None
Source	src/extensions/cp/ui/ElementCache.lua line 126

# reset


Signature	`cp.ui.ElementCache:reset() -> none`
Type	Method
Description	Removes all cached items from the cache.
Parameters	None
Returns	None
Notes	None
Examples	None
Source	src/extensions/cp/ui/ElementCache.lua line 48