| Package | mx.charts.chartClasses |
| Class | public class InstanceCache |
| Inheritance | InstanceCache  Object |
| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 3 |
| Runtime Versions: | Flash Player 9, AIR 1.1 |
Hide Inherited Public Properties
Show Inherited Public Properties| Property | Defined By | ||
|---|---|---|---|
 | constructor : Object
A reference to the class object or constructor function for a given object instance. | Object | |
| count : int
The number of items currently required in the cache. | InstanceCache | ||
| creationCallback : Function
A callback invoked when new instances are created. | InstanceCache | ||
| discard : Boolean = false
Determines if unneeded instances are discarded. | InstanceCache | ||
| factory : IFactory
A factory that generates the type of object to cache. | InstanceCache | ||
| format : flash.text:TextFormat
A TextFormat to apply to any instances created. | InstanceCache | ||
| hide : Boolean = true
Determines if unneeded instances should be hidden. | InstanceCache | ||
| insertPosition : int [write-only]
The position of the instance in the parent's child list. | InstanceCache | ||
| instances : Array [read-only]
The Array of cached instances. | InstanceCache | ||
| properties : Object
A hashmap of properties to assign to new instances. | InstanceCache | ||
| remove : Boolean = false
Determines if unneeded instances should be removed from their parent. | InstanceCache | ||
| Method | Defined By | ||
|---|---|---|---|
InstanceCache(type:Object, parent:Object = null, insertPosition:int = -1, moduleFactory:IFlexModuleFactory = null)
Constructor. | InstanceCache | ||
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Indicates whether an object has a specified property defined. | Object | |
|
Indicates whether an instance of the Object class is in the prototype chain of the object specified
as the parameter. | Object | |
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Indicates whether the specified property exists and is enumerable. | Object | |
|
Sets the availability of a dynamic property for loop operations. | Object | |
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Returns the string representation of this object, formatted according to locale-specific conventions. | Object | |
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Returns the string representation of the specified object. | Object | |
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Returns the primitive value of the specified object. | Object | |
count | property |
creationCallback | property |
public var creationCallback:Function| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 3 |
| Runtime Versions: | Flash Player 9, AIR 1.1 |
A callback invoked when new instances are created. This callback has the following signature:
function creationCallback(newInstance:Object, cache:InstanceCache):void;
discard | property |
public var discard:Boolean = false| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 3 |
| Runtime Versions: | Flash Player 9, AIR 1.1 |
Determines if unneeded instances are discarded.
If set to true, extra elements are discarded
when the cache count is reduced.
Otherwise, extra elements are kept in a separate cache
and reused when the count is increased.
factory | property |
factory:IFactory| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 3 |
| Runtime Versions: | Flash Player 9, AIR 1.1 |
A factory that generates the type of object to cache. Assigning to this discards all current instances and recreate new instances of the correct type.
Implementation
public function get factory():IFactory public function set factory(value:IFactory):voidformat | property |
format:flash.text:TextFormat| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 3 |
| Runtime Versions: | Flash Player 9, AIR 1.1 |
A TextFormat to apply to any instances created. If set, this format is applied as the current and default format for the contents of any instances created. This property is only relevant if the factory generates TextField instances.
Implementation
public function get format():flash.text:TextFormat public function set format(value:flash.text:TextFormat):voidhide | property |
public var hide:Boolean = true| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 3 |
| Runtime Versions: | Flash Player 9, AIR 1.1 |
Determines if unneeded instances should be hidden.
If true, the visible property
is set to false on each extra element
when the cache count is reduced, and set to true
when the count is increased.
This property is only relevant when the factory
generates DisplayObjects.
Setting this property to true for other factory types
generates a run-time error.
insertPosition | property |
instances | property |
instances:Array [read-only] | Language Version: | ActionScript 3.0 |
| Product Version: | Flex 3 |
| Runtime Versions: | Flash Player 9, AIR 1.1 |
The Array of cached instances.
There may be more instances in this Array than currently requested.
You should rely on the count property
of the instance cache rather than the length of this Array.
Implementation
public function get instances():Arrayproperties | property |
properties:Object| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 3 |
| Runtime Versions: | Flash Player 9, AIR 1.1 |
A hashmap of properties to assign to new instances. Each key/value pair in this hashmap is assigned to each new instance created. The property hashmap is assigned to any existing instances when set.
The values in the hashmap are not cloned; object values are shared by all instances.
Implementation
public function get properties():Object public function set properties(value:Object):voidremove | property |
public var remove:Boolean = false| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 3 |
| Runtime Versions: | Flash Player 9, AIR 1.1 |
Determines if unneeded instances should be removed from their parent.
If true, the removeChild() method
is called on the parent for each extra element
when the cache count is reduced.
This property is only relevant when the factory
generates DisplayObjects.
Setting this property to true for other factory types
generates a run-time error.
InstanceCache | () | Constructor |
public function InstanceCache(type:Object, parent:Object = null, insertPosition:int = -1, moduleFactory:IFlexModuleFactory = null)| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 3 |
| Runtime Versions: | Flash Player 9, AIR 1.1 |
Constructor.
Parameterstype:Object — The type of object to construct.
This can be either a Class or an IFactory.
| |
parent:Object (default = null) | |
insertPosition:int (default = -1) | |
moduleFactory:IFlexModuleFactory (default = null) |
Wed Nov 21 2018, 06:34 AM -08:00