CharacterUtil

Package	flashx.textLayout.utils
Class	public final class CharacterUtil
Inheritance	CharacterUtil Object

Language Version:

ActionScript 3.0

Runtime Versions:

Flash Player 10, AIR 1.5

Utilities for managing and getting information about characters. The methods of this class are static and must be called using the syntax CharacterUtil.method(parameter).

Public Properties

	Property		Defined By
		constructor : Object A reference to the class object or constructor function for a given object instance.	Object

Public Methods

	Method		Defined By
		hasOwnProperty(name:String):Boolean Indicates whether an object has a specified property defined.	Object
		isHighSurrogate(charCode:int):Boolean [static] Returns true if the charCode argument is a high word in a surrogate pair.	CharacterUtil
		isLowSurrogate(charCode:int):Boolean [static] Returns true if the charCode argument is a low word in a surrogate pair.	CharacterUtil
		isPrototypeOf(theClass:Object):Boolean Indicates whether an instance of the Object class is in the prototype chain of the object specified as the parameter.	Object
		isWhitespace(charCode:int):Boolean [static] Returns true if charCode is a whitespace character.	CharacterUtil
		propertyIsEnumerable(name:String):Boolean Indicates whether the specified property exists and is enumerable.	Object
		setPropertyIsEnumerable(name:String, isEnum:Boolean = true):void Sets the availability of a dynamic property for loop operations.	Object
		toLocaleString():String Returns the string representation of this object, formatted according to locale-specific conventions.	Object
		toString():String Returns the string representation of the specified object.	Object
		valueOf():Object Returns the primitive value of the specified object.	Object

Method Detail

isHighSurrogate

()

method

public static function isHighSurrogate(charCode:int):Boolean

Language Version:

ActionScript 3.0

Runtime Versions:

Flash Player 10, AIR 1.5

Returns true if the charCode argument is a high word in a surrogate pair. A surrogate pair represents a character with a code point that requires more than sixteen bits to express and thus requires a combination of two 16-bit words, a high surrogate and a low surrogate, to embody its code point.

This method can be used when processing a series of characters to ensure that you do not inadvertently divide a surrogate pair into incomplete halves.

Parameters

charCode:int — An integer that represents a character code. Character codes are usually represented in hexadecimal format. For example, the space character's character code can be represented by the number 0x0020.

Returns

Boolean — true if charCode is the high surrogate in a surrogate pair.

isLowSurrogate

()

method

public static function isLowSurrogate(charCode:int):Boolean

Language Version:

ActionScript 3.0

Runtime Versions:

Flash Player 10, AIR 1.5

Returns true if the charCode argument is a low word in a surrogate pair. A surrogate pair represents a character with a code point that requires more than sixteen bits to express and thus requires a combination of two 16-bit words, a high surrogate and a low surrogate, to embody its code point.

This method can be used when processing a series of characters to ensure that you do not inadvertently divide a surrogate pair into incomplete halves.

Parameters

Returns

Boolean — true if charCode is the low surrogate in a surrogate pair.

isWhitespace

()

method

public static function isWhitespace(charCode:int):Boolean

Language Version:

ActionScript 3.0

Runtime Versions:

Flash Player 10, AIR 1.5

Returns true if charCode is a whitespace character.

The following table describes all characters that this method considers a whitespace character.

Character Code	Unicode Character Name	Category
`0x0020`	SPACE	Space Separator
`0x1680`	OGHAM SPACE MARK	Space Separator
`0x180E`	MONGOLIAN VOWEL SEPARATOR	Space Separator
`0x2000`	EN QUAD	Space Separator
`0x2001`	EM QUAD	Space Separator
`0x2002`	EN SPACE	Space Separator
`0x2003`	EM SPACE	Space Separator
`0x2004`	THREE-PER-EM SPACE	Space Separator
`0x2005`	FOUR-PER-EM SPACE	Space Separator
`0x2006`	SIX-PER-EM SPACE	Space Separator
`0x2007`	FIGURE SPACE	Space Separator
`0x2008`	PUNCTUATION SPACE	Space Separator
`0x2009`	THIN SPACE	Space Separator
`0x200A`	HAIR SPACE	Space Separator
`0x202F`	NARROW NO-BREAK SPACE	Space Separator
`0x205F`	MEDIUM MATHEMATICAL SPACE	Space Separator
`0x3000`	IDEOGRAPHIC SPACE	Space Separator
`0x2028`	LINE SEPARATOR	Line Separator
`0x2029`	PARAGRAPH SEPARATOR	Paragraph Separator
`0x0009`	CHARACTER TABULATION	Other
`0x000A`	LINE FEED	Other
`0x000B`	LINE TABULATION	Other
`0x000C`	FORM FEED	Other
`0x000D`	CARRIAGE RETURN	Other
`0x0085`	NEXT LINE	Other
`0x00A0`	NO-BREAK SPACE	Other

Parameters

Returns

Boolean — true if charCode is a whitespace character.

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CharacterUtil - AS3

Classes x

isHighSurrogate

isLowSurrogate

isWhitespace