pia.js

pia.js is a library that supports object-oriented programming in javascirpt.

current version

v0.0.2

sample

public/private

var Library = $class({

    // constructor
    initialize : function(name){
        this.name = name; // private instance property
    },

    // public instance methods
    public : {
        getName : function(){
            return this.prefix() + this.makeName();
        },

        setName : function(name){
            return this.name = name;
        },

        prefix : function(){ 
            return "Javascript Library: ";
        }
    },

             // private instance methods
    private : {
        makeName : function(){
            return this.name.toUpperCase();
        }
    },

    // class method
    self : {
        // public class method
        public : {
            libraryName : function(){
                return "pia" + this.extension();
            }
        },
                 // private class method
        private : {
            extension : function(){
                return ".js";
            }
        },
    }
});


console.log( Library.libraryName() ); // pia.js

var library = Library.new("pia.js");

console.log( library.name );          // undefined
console.log( library.getName() );     // Javascript Library: PIA.JS 

library.setName("jquery");

console.log( library.getName() );     // Javascript Library: JQUERY 
console.log( library.makeName() );    // library has no method 'makeName'

extend

var User = $class({
    initialize : function(){
        this.name = this.name || "guest user";
        this.pass = this.pass || "guest";
    },

    public : {
        signIn : function(prefix){
            return (prefix || "welcome") + " " + this.name;
        },

        getPass : function(){
            return this.pass;
        }
    },

    private : {
        message : function(isAdmin){
            return isAdmin ? "admin user" : "guest user";
        }
    }
});

var AdminUser = $class({
    initialize : function(name, pass){
        this.name = name;
        this.pass = pass;
    },

    public : {
        signIn : function(){
            if(this.pass === 1234)
                return $super("hello");
            else
                return "could not sign in";
        },

        isAdmin : function(){
            return this.message(true);
        }
    }
}).extend(User);

var GuestUser = $class({
    initialize : function(name){
        this.name = name;
        $super();
    },

    public : {
        isAdmin : function(){
            return this.message(false);
        }
    }
}).extend(User);


var adminUser = AdminUser.new("soplana", 1234);
console.log( adminUser.isAdmin() );                    // admin user 
console.log( adminUser.signIn()  );                    // hello soplana 
console.log( AdminUser.new("soplana", 123).signIn() ); // could not sign in 

var guestUser = GuestUser.new("soplan");
console.log( guestUser.isAdmin() );                    // guest user 
console.log( guestUser.signIn()  );                    // welcome guest user 
console.log( guestUser.getName() );                    // soplana
console.log( guestUser.getPass() );                    // guest

test

$ mocha test/pia.js