Coolshare Pub/Sub for React

By Mark Qian 3/25/2017 ([email protected]) Go http://MarkQian.com to see more.

This is a pub/sub package for react. It provides the following functionalities:

A). publish a topic in two ways:

a). publish from javascript. To publish a topic in javascript, 
    you need to do the following:
    
    //Import
    import CommunicationManager from 'CommunicationManager'
    
    //Create an singleton
    const communicationManager = new CommunicationManager();
    
    class MyComponent extends Component {
    	myHandler() {
            communicationManager.publish("/MyTopic1", {"data":{"name":"John"}});
  		}
		//...
    }
    
    where the second parameter of the "publish" method is "options" which contains the 
    data you like to pass with the topic.
    
b). publish from jsx. To publish a topic in jsx, 
    you need to do the following:
    
    render() {
      return (
        <div>
           <Publisher topic="/left/button"><button>Left</button></Publisher>
           <Publisher topic="/left/Publish"><a href="#" className="ddd">aaaa</a></Publisher>
           <Publisher topic="/left/Publish" event="Change" options="{'name':'Mark', 'address':'123 Main Ave San Jose, CA'}">
             <select>
               <option value="a">A</option>
               <option value="b">B</option>
             </select>
           </Publisher>
      	   <Publisher topic="/left/Publish">
      	     <MyComponentC/>
      	   </Publisher>
      </div>  
    );
  }
  
  where the attribute "options", optional, contains the data you want to pass with the topic.
  The content contained by "options" needs to be in a JSON format which will be evaluated into a javascript object.
  
  The "event" attribute is optional and the default is "Click".
  
  Please also pay attention to the Case of your "event". You should use "MouseOver" instead of "mouseover", "Mouseover" or
  "mouseOver" and "Change" instead of "change".
  
  Note:
  *****
  
  When "publish" tag/component contains regular DOM elements such as "div", "a", "button" and "select", the specified 
  "event" is bound directly to the contained elements but the contained elements are not regular DOm elements (such as
  the last "Publish" element above) the specified event will be bound to a "div" element containing the contained elements.
  
  
    
           

B). subscribe a topic

To subscribe a topic, you need to do the following:
    
    //Import
    import CommunicationManager from 'CommunicationManager'
    
    //Create an singleton
    const communicationManager = new CommunicationManager();
    
    class MyComponent extends Component {
    	componentWillMount() {
            communicationManager.subscribe("/MyTopic1", function(options) {
                  //handle the topic here
            );
  		}
		//...
    }

C). To run the sample code, you need to

	1). download it from 
	
	    https://github.com/coolshare/CoolshareReactPubSub/archive/master.zip
	    
	    and unzip it to, say c:\CoolshareReactPubSub
	    
	    
	2). Prepare required environment
	
	    - install node.js
	    - install required lib by running
	       cd  c:\CoolshareReactPubSub
	       npm install
	       
	3). Start the server and browser by
	
	    npm start
	         
	
	    You should see a browser page is opened at http://localhost:3000
	    
	Click each component on the page and the result will be shown in the console.
	
	Have fun!

D). To install it into your React application, you need to

 1). n