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flash.globalization 

StringTools  - AS3

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com.adobe.solutions.acm.authoring.presentation
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com.adobe.solutions.acm.authoring.presentation.common
com.adobe.solutions.acm.authoring.presentation.events
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com.adobe.solutions.prm.presentation.team
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Language Elements

Global Constants
Global Functions
Operators
Statements, Keywords & Directives
Special Types

Appendixes

What's New
Compiler Errors
Compiler Warnings
Run-Time Errors
Migrating to ActionScript 3
Supported Character Sets
MXML Only Tags
Motion XML Elements
Timed Text Tags
List of deprecated elements
Accessibility Implementation Constants
How to Use ActionScript Examples
Legal notices
Packageflash.globalization
Classpublic final class StringTools
InheritanceStringTools Inheritance Object

Language Version: ActionScript 3.0
Runtime Versions: Flash Player 10.1, AIR 2

The StringTools class provides locale-sensitive case conversion methods.

In some situations the conversion between uppercase and lowercase letters is not a simple mapping from one character to another and instead requires language- or context-specific processing. For example:

  • In Turkish and Azeri, the uppercase of the dotted lowercase i is an uppercase dotted İ (U+0130). Similarly the lowercase of a dotless uppercase I, is a lowercase dotless ı (U+0131).
  • The lowercase sharp S, ß (U+00DF), used in German is converted to uppercase double SS.
  • In Greek there are two representations of the lowercase sigma, σ (U+03C3) and ς (U+03C2), which both convert to the single uppercase sigma Σ (U+03A3).

The toLowerCase() and toUpperCase() methods of this class provide this special case conversion logic.

Due to the use of the user's settings, the use of case conversion rules provided by the operating system, and the use of a fallback locale when a requested locale is not supported, different users can see different case conversion results even when using the same locale ID.

View the examples



Public Properties
 PropertyDefined By
  actualLocaleIDName : String
[read-only] The name of the actual locale ID used by this StringTools object.
StringTools
 Inheritedconstructor : Object
A reference to the class object or constructor function for a given object instance.
Object
  lastOperationStatus : String
[read-only] The status of the most recent operation that this StringTools object performed.
StringTools
  requestedLocaleIDName : String
[read-only] The name of the requested locale ID that was passed to the constructor of this StringTools object.
StringTools
Public Methods
 MethodDefined By
  
StringTools(requestedLocaleIDName:String)
Constructs a new StringTools object that provides case conversion and other utilities according to the conventions of a given locale.
StringTools
  
[static] Lists all of the locale ID names supported by this class.
StringTools
 Inherited
Indicates whether an object has a specified property defined.
Object
 Inherited
Indicates whether an instance of the Object class is in the prototype chain of the object specified as the parameter.
Object
 Inherited
Indicates whether the specified property exists and is enumerable.
Object
 Inherited
Sets the availability of a dynamic property for loop operations.
Object
 Inherited
Returns the string representation of this object, formatted according to locale-specific conventions.
Object
  
Converts a string to lowercase according to language conventions.
StringTools
 Inherited
Returns the string representation of the specified object.
Object
  
Converts a string to uppercase according to language conventions.
StringTools
 Inherited
Returns the primitive value of the specified object.
Object
Property Detail

actualLocaleIDName

property
actualLocaleIDName:String  [read-only]

Language Version: ActionScript 3.0
Runtime Versions: Flash Player 10.1, AIR 2

The name of the actual locale ID used by this StringTools object.

There are three possibilities for the value of the name, depending on operating system and the value of the requestedLocaleIDName parameter passed to the StringTools() constructor.

  1. If the requested locale was not LocaleID.DEFAULT and the operating system provides support for the requested locale, then the name returned is the same as the requestedLocaleIDName property.
  2. If LocaleID.DEFAULT was used as the value for the requestedLocaleIDName parameter to the constructor, then the name of the current locale specified by the user's operating system is used. The LocaleID.DEFAULT value preserves user's customized setting in the OS. Passing an explicit value as the requestedLocaleIDName parameter does not necessarily give the same result as using the LocaleID.DEFAULT even if the two locale ID names are the same. The user could have customized the locale settings on the machine, and by requesting an explicit locale ID name rather than using LocaleID.DEFAULT your application would not retrieve those customized settings.
  3. If the system does not support the requestedLocaleIDName specified in the constructor then a fallback locale ID name is provided.



Implementation
    public function get actualLocaleIDName():String

Related API Elements

lastOperationStatus

property 
lastOperationStatus:String  [read-only]

Language Version: ActionScript 3.0
Runtime Versions: Flash Player 10.1, AIR 2

The status of the most recent operation that this StringTools object performed. The lastOperationStatus property is set whenever the constructor or a method of this class is called or another property is set. For the possible values see the description for each method.



Implementation
    public function get lastOperationStatus():String

Related API Elements

requestedLocaleIDName

property 
requestedLocaleIDName:String  [read-only]

Language Version: ActionScript 3.0
Runtime Versions: Flash Player 10.1, AIR 2

The name of the requested locale ID that was passed to the constructor of this StringTools object.

If the LocaleID.DEFAULT value was used then the name returned is "i-default". The actual locale used can differ from the requested locale when a fallback locale is applied. The name of the actual locale can be retrieved using the actualLocaleIDName property.



Implementation
    public function get requestedLocaleIDName():String

Related API Elements

Constructor Detail

StringTools

()Constructor
public function StringTools(requestedLocaleIDName:String)

Language Version: ActionScript 3.0
Runtime Versions: Flash Player 10.1, AIR 2

Constructs a new StringTools object that provides case conversion and other utilities according to the conventions of a given locale.

This constructor determines if the current operating system supports the requested locale ID name. If it is not supported then a fallback locale is used instead. If a fallback locale is used then the lastOperationStatus property indicates the type of fallback, and the actualLocaleIDName property contains the name of the fallback locale ID.

When this constructor completes successfully the lastOperationStatus property is set to:

  • LastOperationStatus.NO_ERROR

When the requested locale ID name is not available then the lastOperationStatus is set to one of the following:

  • LastOperationStatus.USING_FALLBACK_WARNING
  • LastOperationStatus.USING_DEFAULT_WARNING

Otherwise the lastOperationStatus property is set to one of the constants defined in the LastOperationStatus class.

Parameters
requestedLocaleIDName:String — The preferred locale ID name to use when determining date or time formats.

Throws
ArgumentError — when the requestedLocaleIDName parameter is null

Related API Elements

LocaleID
lastOperationStatus
requestedLocaleIDName
actualLocaleIDName
Method Detail

getAvailableLocaleIDNames

()method
public static function getAvailableLocaleIDNames():Vector.<String>

Language Version: ActionScript 3.0
Runtime Versions: Flash Player 10.1, AIR 2

Lists all of the locale ID names supported by this class.

If this class is not supported on the current operating system, this method returns a null value.

When this method is called and it completes successfully, the lastOperationStatus property is set to:

  • LastOperationStatus.NO_ERROR

Otherwise the lastOperationStatus property is set to one of the constants defined in the LastOperationStatus class.

Returns
Vector.<String> — A vector of strings containing all of the locale ID names supported by this class.

toLowerCase

()method 
public function toLowerCase(s:String):String

Language Version: ActionScript 3.0
Runtime Versions: Flash Player 10.1, AIR 2

Converts a string to lowercase according to language conventions. Depending on the locale, the output string length can differ from the input string length.

When this method is called and it completes successfully, the lastOperationStatus property is set to:

  • LastOperationStatus.NO_ERROR

Otherwise the lastOperationStatus property is set to one of the constants defined in the LastOperationStatus class.

Parameters

s:String — A string to convert to lowercase.

Returns
String — The converted lowercase string.

Throws
ArgumentError — when the s parameter is null.

Related API Elements

toUpperCase

()method 
public function toUpperCase(s:String):String

Language Version: ActionScript 3.0
Runtime Versions: Flash Player 10.1, AIR 2

Converts a string to uppercase according to language conventions. Depending on the locale, the output string length can differ from the input string length.

When this method is called and it completes successfully, the lastOperationStatus property is set to:

  • LastOperationStatus.NO_ERROR

Otherwise the lastOperationStatus property is set to one of the constants defined in the LastOperationStatus class.

Parameters

s:String — A string to convert to uppercase.

Returns
String — The converted uppercase string.

Throws
ArgumentError — when the s parameter is null.

Related API Elements

StringToolsExample.as

This example shows how different strings are converted to lower case and upper case in a lingustically correct manner.

This example takes the following steps:

  1. Creates a StringTools object.
  2. Defines three strings with characters unique to the Turkish, Greek, and German languages.
  3. Converts each string to upper case and lower case and displays the results. This example demonstrates interesting locale-specific behavior for characters like the Turkish "ı" and "İ", the German "ß" and the Greek "Σςσ".
package {
    import flash.display.Sprite;
    import flash.globalization.LocaleID;
    import flash.globalization.StringTools;
    import flash.text.TextField;
    import flash.text.TextFieldAutoSize;

    public class StringToolsExample extends Sprite
    {
        public function StringToolsExample()
        {
            var localeName:String= LocaleID.DEFAULT;
            var strTool:StringTools = new StringTools(localeName);
            
            trace('\n\n' + "LocaleID requested: " + nf.requestedLocaleIDName 
            + "; actual: " + nf.actualLocaleIDName);
            trace( "Last Operation Status:" + nf.lastOperationStatus );  
            
            var turkishStr:String = "iI ıİ";
            var greekStr:String = "Σςσβΰ�Σ";
            var germanStr:String= "ß";
            
            var tfTurInp:TextField = createTextField(10, 10);
            tfTurInp.text="Turkish Input: \t " + turkishStr;
            
            var tfdash:TextField = createTextField(10, 20);
            tfdash.text="-------------------";
            
            var tf1:TextField = createTextField(10, 30);
            tf1.text="\t Upper case: \t " + strTool.toUpperCase(turkishStr);
            
            var tf2:TextField = createTextField(10, 40);
            tf2.text="\t Lower case: \t " + strTool.toLowerCase(turkishStr);
            
            var tfgreekInp:TextField = createTextField(10, 60);
            tfgreekInp.text="Greek Input: \t " + greekStr;
            
            var tfdash1:TextField = createTextField(10, 70);
            tfdash1.text="-------------------";
            
            var tf3:TextField = createTextField(10, 80);
            tf3.text="\t Upper case: \t " + strTool.toUpperCase(greekStr);
            
            var tf4:TextField = createTextField(10, 90);
            tf4.text="\t Lower case: \t " + strTool.toLowerCase(greekStr);
            
            var tfgermanInp:TextField = createTextField(10, 110);
            tfgermanInp.text="German Input: \t " + germanStr;
            
            var tfdash2:TextField = createTextField(10, 120);
            tfdash2.text="-------------------";
                         
            var tf5:TextField = createTextField(10, 130);
            tf5.text="\t Upper case: \t " + strTool.toUpperCase(germanStr);
            
            var tf6:TextField = createTextField(10, 140);
            tf6.text="\t Lower case: \t " + strTool.toLowerCase(germanStr);
        }
        
        private function createTextField(x:Number, y:Number):TextField 
        {
            var result:TextField = new TextField();
            result.x = x;
            result.y = y;
            result.autoSize=TextFieldAutoSize.LEFT;
            addChild(result);
            return result;
        }
    }
}