CSSStyleDeclaration

Pacote	mx.styles
Classe	public class CSSStyleDeclaration
Herança	CSSStyleDeclaration EventDispatcher Object
Subclasses	AdvancedDataGridColumn, DataGridColumn

Versão da linguagem:

ActionScript 3.0

Versão de produto:

Flex 3

Versões de runtime:

Flash Player 9, AIR 1.1

The CSSStyleDeclaration class represents a set of CSS style rules. The MXML compiler automatically generates one CSSStyleDeclaration object for each selector in the CSS files associated with a Flex application.

A CSS rule such as

      Button { color: #FF0000 }

affects every instance of the Button class; a selector like Button is called a type selector and must not start with a dot.

A CSS rule such as

      .redButton { color: #FF0000 }

affects only components whose styleName property is set to "redButton"; a selector like .redButton is called a class selector and must start with a dot.

You can access the autogenerated CSSStyleDeclaration objects using the StyleManager.getStyleDeclaration() method, passing it either a type selector

  var buttonDeclaration:CSSStyleDeclaration =
      StyleManager.getStyleDeclaration("Button");

or a class selector

  var redButtonStyleDeclaration:CSSStyleDeclaration =
      StyleManager.getStyleDeclaration(".redButton");

You can use the getStyle(), setStyle(), and clearStyle() methods to get, set, and clear style properties on a CSSStyleDeclaration.

You can also create and install a CSSStyleDeclaration at run time using the StyleManager.setStyleDeclaration() method:

  var newStyleDeclaration:CSSStyleDeclaration = new CSSStyleDeclaration(".bigMargins");
  newStyleDeclaration.defaultFactory = function():void
  {
      leftMargin = 50;
      rightMargin = 50;
  }
  StyleManager.setStyleDeclaration(".bigMargins", newStyleDeclaration, true);

Mais exemplos

Using the StyleManager class

Elementos da API relacionados

mx.core.UIComponent
mx.styles.StyleManager

Propriedades públicas

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	Propriedade		Definido por
		constructor : Object Uma referência ao objeto de classe ou à função de construtor de uma determinada ocorrência de objeto.	Object
		defaultFactory : Function This function, if it isn't null, is usually autogenerated by the MXML compiler.	CSSStyleDeclaration
		factory : Function This function, if it isn't null, is usually autogenerated by the MXML compiler.	CSSStyleDeclaration
		overrides : Object If the setStyle() method is called on a UIComponent or CSSStyleDeclaration at run time, this object stores the name/value pairs that were set; they override the name/value pairs in the objects produced by the methods specified by the defaultFactory and factory properties.	CSSStyleDeclaration
		selector : CSSSelector This property is the base selector of a potential chain of selectors and conditions that are used to match CSS style declarations to components.	CSSStyleDeclaration
		selectorIndex : int = 0 The order this CSSStyleDeclaration was added to its StyleManager.	CSSStyleDeclaration
		specificity : int [somente leitura] Determines the order of precedence when applying multiple style declarations to a component.	CSSStyleDeclaration
		subject : String [somente leitura] The subject describes the name of a component that may be a potential match for this style declaration.	CSSStyleDeclaration

Métodos públicos

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	Método		Definido por
		CSSStyleDeclaration(selector:Object = null, styleManager:IStyleManager2 = null, autoRegisterWithStyleManager:Boolean = true) Constructor.	CSSStyleDeclaration
		addEventListener(type:String, listener:Function, useCapture:Boolean = false, priority:int = 0, useWeakReference:Boolean = false):void Registra um objeto de ouvinte de evento em um objeto EventDispatcher, de forma que o ouvinte receba a notificação de um evento.	EventDispatcher
		clearStyle(styleProp:String):void Clears a style property on this CSSStyleDeclaration.	CSSStyleDeclaration
		dispatchEvent(event:Event):Boolean Envia um evento para o fluxo de eventos.	EventDispatcher
		getStyle(styleProp:String):* Gets the value for a specified style property, as determined solely by this CSSStyleDeclaration.	CSSStyleDeclaration
		hasEventListener(type:String):Boolean Verifica se o objeto EventDispatcher tem ouvintes registrados para um tipo específico de evento.	EventDispatcher
		hasOwnProperty(name:String):Boolean Indica se um objeto tem uma propriedade especificada definida.	Object
		isPrototypeOf(theClass:Object):Boolean Indica se uma ocorrência da classe Object está na cadeia de protótipos do objeto especificado como o parâmetro.	Object
		matchesStyleClient(object:IAdvancedStyleClient):Boolean Determines whether this style declaration applies to the given component based on a match of the selector chain.	CSSStyleDeclaration
		propertyIsEnumerable(name:String):Boolean Indica se a propriedade especificada existe e é enumerável.	Object
		removeEventListener(type:String, listener:Function, useCapture:Boolean = false):void Remove um ouvinte do objeto EventDispatcher.	EventDispatcher
		setPropertyIsEnumerable(name:String, isEnum:Boolean = true):void Define a disponibilidade de uma propriedade dinâmica para operações de repetição.	Object
		setStyle(styleProp:String, newValue:*):void Sets a style property on this CSSStyleDeclaration.	CSSStyleDeclaration
		toLocaleString():String Retorna a representação da string deste objeto, formatado segundo as convenções específicas para a localidade.	Object
		toString():String Retorna a representação de string do objeto especificado.	Object
		valueOf():Object Retorna o valor primitivo do objeto especificado.	Object
		willTrigger(type:String):Boolean Verifica se um ouvinte de evento está registrado nesse objeto EventDispatcher ou em qualquer um de seus ancestrais para o tipo de evento especificado.	EventDispatcher

Eventos

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	Evento		Resumo	Definido por
		activate	[transmissão de evento] Despachado quando o Flash Player ou o aplicativo do AIR ganha o foco do sistema operacional e está se tornando inativo.	EventDispatcher
		deactivate	[transmissão de evento] Despachado quando o Flash Player ou o aplicativo do AIR perde o foco do sistema operacional e está se tornando inativo.	EventDispatcher

Detalhes da propriedade

defaultFactory

propriedade

defaultFactory:Function

Versão da linguagem:

ActionScript 3.0

Versão de produto:

Flex 3

Versões de runtime:

Flash Player 9, AIR 1.1

This function, if it isn't null, is usually autogenerated by the MXML compiler. It produce copies of a plain Object, such as { leftMargin: 10, rightMargin: 10 }, containing name/value pairs for style properties; the object is used to build a node of the prototype chain for looking up style properties.

If this CSSStyleDeclaration is owned by a UIComponent written in MXML, this function encodes the style attributes that were specified on the root tag of the component definition.

If the UIComponent was written in ActionScript, this property is null.

Implementação
public function get defaultFactory():Function
public function set defaultFactory(value:Function):void

factory

propriedade

factory:Function

Versão da linguagem:

ActionScript 3.0

Versão de produto:

Flex 3

Versões de runtime:

Flash Player 9, AIR 1.1

If this CSSStyleDeclaration is owned by a UIComponent, this function encodes the style attributes that were specified in MXML for an instance of that component.

Implementação
public function get factory():Function
public function set factory(value:Function):void

overrides

propriedade

overrides:Object

Versão da linguagem:

ActionScript 3.0

Versão de produto:

Flex 3

Versões de runtime:

Flash Player 9, AIR 1.1

If the setStyle() method is called on a UIComponent or CSSStyleDeclaration at run time, this object stores the name/value pairs that were set; they override the name/value pairs in the objects produced by the methods specified by the defaultFactory and factory properties.

Implementação
public function get overrides():Object
public function set overrides(value:Object):void

selector

propriedade

selector:CSSSelector

Versão da linguagem:

ActionScript 3.0

Versão de produto:

Flex 4

Versões de runtime:

Flash Player 10, AIR 1.5

This property is the base selector of a potential chain of selectors and conditions that are used to match CSS style declarations to components.

Implementação
public function get selector():CSSSelector
public function set selector(value:CSSSelector):void

selectorIndex

propriedade

public var selectorIndex:int = 0

The order this CSSStyleDeclaration was added to its StyleManager. MatchStyleDeclarations has to return the declarations in the order they were declared

specificity

propriedade

specificity:int [somente leitura]

Versão da linguagem:

ActionScript 3.0

Versão de produto:

Flex 4

Versões de runtime:

Flash Player 10, AIR 1.5

Determines the order of precedence when applying multiple style declarations to a component. If style declarations are of equal precedence, the last one wins.

Implementação
public function get specificity():int

subject

propriedade

subject:String [somente leitura]

Versão da linguagem:

ActionScript 3.0

Versão de produto:

Flex 4

Versões de runtime:

Flash Player 10, AIR 1.5

The subject describes the name of a component that may be a potential match for this style declaration. The subject is determined as right most simple type selector in a potential chain of selectors.

Implementação
public function get subject():String

Detalhes do construtor

()

Construtor

public function CSSStyleDeclaration(selector:Object = null, styleManager:IStyleManager2 = null, autoRegisterWithStyleManager:Boolean = true)

Versão da linguagem:

ActionScript 3.0

Versão de produto:

Flex 3

Versões de runtime:

Flash Player 9, AIR 1.1

Constructor.

Parâmetros

	`selector:Object` (default = `null`) — - If the selector is a CSSSelector then advanced CSS selectors are supported. If a String is used for the selector then only simple CSS selectors are supported. If the String starts with a dot it is interpreted as a universal class selector, otherwise it must represent a simple type selector. If not null, this CSSStyleDeclaration will be registered with StyleManager.

	`styleManager:IStyleManager2` (default = `null`) — - The style manager to set this declaration into. If the styleManager is null the top-level style manager will be used.

	`autoRegisterWithStyleManager:Boolean` (default = `true`) — - If true set the selector in the styleManager. The selector will only be set if both `selector` and `styleManager` are both non-null.

Detalhes do método

clearStyle

()

método

public function clearStyle(styleProp:String):void

Versão da linguagem:

ActionScript 3.0

Versão de produto:

Flex 3

Versões de runtime:

Flash Player 9, AIR 1.1

Clears a style property on this CSSStyleDeclaration. This is the same as setting the style value to undefined.

Parâmetros

styleProp:String — The name of the style property.

getStyle

()

método

public function getStyle(styleProp:String):*

Versão da linguagem:

ActionScript 3.0

Versão de produto:

Flex 3

Versões de runtime:

Flash Player 9, AIR 1.1

Gets the value for a specified style property, as determined solely by this CSSStyleDeclaration.

The returned value may be of any type.

The values null, "", false, NaN, and 0 are all valid style values, but the value undefined is not; it indicates that the specified style is not set on this CSSStyleDeclaration. You can use the method StyleManager.isValidStyleValue() to test the value that is returned.

Parâmetros

styleProp:String — The name of the style property.

Retorna

* — The value of the specified style property if set, or undefined if not.

matchesStyleClient

()

método

public function matchesStyleClient(object:IAdvancedStyleClient):Boolean

Versão da linguagem:

ActionScript 3.0

Versão de produto:

Flex 4

Versões de runtime:

Flash Player 10, AIR 1.5

Determines whether this style declaration applies to the given component based on a match of the selector chain.

Parâmetros

object:IAdvancedStyleClient — The component to match the style declaration against.

Retorna

Boolean — true if this style declaration applies to the component, otherwise false.

setStyle

()

método

public function setStyle(styleProp:String, newValue:*):void

Versão da linguagem:

ActionScript 3.0

Versão de produto:

Flex 3

Versões de runtime:

Flash Player 9, AIR 1.1

Sets a style property on this CSSStyleDeclaration.

Parâmetros

	`styleProp:String` — The name of the style property.

	`newValue:*` — The value of the style property. The value may be of any type. The values `null`, `""`, `false`, `NaN`, and `0` are all valid style values, but the value `undefined` is not. Setting a style property to the value `undefined` is the same as calling the `clearStyle()` method.

Aspectos jurídicos | Política de privacidade on-line

CSSStyleDeclaration - AS3 Flex

Classes x

defaultFactory

factory

overrides

selector

selectorIndex

specificity

subject