MACROMEDIA FLEX-FLEX ACTIONSCRIPT LANGUAGE, Справочник

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private 195
private
Availability
Flash Player 6.
Usage
class someClassName{
private var name ;
private function name () {
// your statements here
}
}
Parameters
name
The name of the variable or function that you want to specify as private.
Description
Keyword; specifies that a variable or function is available only to the class that declares or defines
it or to subclasses of that class. By default, a variable or function is available to any caller. Use this
keyword if you want to restrict access to a variable or function. For more information, see
“Controlling member access” on page 53 .
You can use this keyword only in class definitions, not in interface definitions.
Example
The following example demonstrates how you can hide certain properties within a class using the
private
keyword. Create a new AS file called Login.as.
class Login {
private var loginUserName:String;
private var loginPassword:String;
public function Login(param_username:String, param_password:String) {
this.loginUserName = param_username;
this.loginPassword = param_password;
}
public function get username():String {
return this.loginUserName;
}
public function set username(param_username:String):Void {
this.loginUserName = param_username;
}
public function set password(param_password:String):Void {
this.loginPassword = param_password;
}
}
In the same directory as Login.as, create a new FLA or AS document.
import Login:
var gus:Login = new Login("Gus", "Smith");
trace(gus.username); // output: Gus
trace(gus.password); // output: undefined
trace(gus.loginPassword); // error
CHAPTER 5
ActionScript Core Language Elements