Command Pattern Continued

gistfile1.js

/* 
   Command Pattern Continued

   Adapted from https://en.wikipedia.org/wiki/Command_pattern#JavaScript
   & http://www.onjava.com/pub/a/onjava/2006/04/05/ajax-mutual-exclusion.html

   Application: Wallace Variation for Lamports Bakery Algorithm for implementing mutex in javascript

*/

/* The Invoker function */
var Invoke = function(){
    var _commands = [];
    this.id = 0;
    this.storeAndExecute = function(command){
        _commands.push(command);
        command.execute();
        ++this.id;
        console.log(this.id)
    }

}
 
/* Receiver function */
var Reciever = function(){
    this.stateZero = function(){ 
    	console.log ('state 0');

    	 };
    this.stateOne = function(){ 
    	console.log ('state 1');

    	 };
}
 
/* The StateZeroExecute command */
var StateZeroExecute = function(reciever){
    this.execute = function() { reciever.stateZero() };
}
 
/* The StateOneExecute command */
var StateOneExecute = function(reciever){
    this.execute = function() { reciever.stateOne() };
}
 
var StateMachine = new Reciever();
var stateOne = new StateOneExecute(StateMachine);
var stateZero = new StateZeroExecute(StateMachine);


var client1 = new Invoke();
var client2 = new Invoke();
 
client1.storeAndExecute(stateOne);
client2.storeAndExecute(stateOne);
client1.storeAndExecute(stateZero);
client2.storeAndExecute(stateZero);