Using the webfanIntents API - µ.Flow package blog

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Package: µ.Flow

With "webfanIntents" it is possible to delegate an "action" to an arbitrary 3rd party applications implementing the spec while server, client and API does not know of each other.




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Read more about the specification...

Quick Usage Example:

First include the library on client and server side:
<script type="text/javascript" src="http://api.webfan.de/api-d/4/js-api/library.js"></script>
On the client regsiter an intent and start an Activity (by button click):
<intent
 action="http://webintents.org/pick"
 type="application/vnd.frdl.webfan.client.sdk+json"
 title="My SDK Client" 
 disposition="new"
 icon="favicon.ico" 
 href="?intents=1"
/>

<button onclick="
 window.navigator.startActivity( new Intent(
  'http://webintents.org/pick',
  'application/vnd.frdl.webfan.client.sdk+json' ,
  { 'API_CLIENT_URL' : frdl.route( 'API_CLIENT_URL' ),
    'title' : 'Webfan API SDK Client'
  }
            
 ), 
 function (data) {
  if( 200 !== parseInt(data.code) ) {
   alert( 'The service application throws an error:  ' + ( data.error || null).toString() );
  } else {
   if(!!data.message)alert(data.message.toString())
  }
 }); 
"
>
Test start webfanIntents activity with demo data...
</button>

On the server side include in your head section:
<script type="text/javascript" src = "http://webfan.de/cdn/frdl/flow/components/webfan/webfat/js/intents.js"></script>
Register and run and Service for an Action with a given mime-type:
<div ui-view="mainView"></div>
<script>
 var API_CLIENT_URL;

 frdl.when( function() { return ('undefined' !== typeof frdl.frdl$intentService ); },
 function(){
  frdl.frdl$intentService.register( 'application/vnd.frdl.webfan.client.sdk+json', 'http://webintents.org/pick', 
 function(_intent){
  API_CLIENT_URL = _intent.data.API_CLIENT_URL; 
  var r = {
   code : 200,
   replyTo : _intent._id,
   message : 'Your Client was picked! ' + "\n" + API_CLIENT_URL  + "\n"+' by '  + "\n"+ new frdl.Url().urlMakeNew(),
   error : null,
   data : {
		              	
   }
  }; 
       	           
  $('*[ui-view="mainView"]')
   .html(''
   + '<section class="console-screen">'
   +'  frdl://webfanIntents/' + 'application/' + 'vnd.frdl.webfan.client.sdk+json' + '/http://webintents.org/pick  > '+"\n"
   +' sendResponse > '+"\n"
   +  JSON.stringify(r)+"\n"
   +'</section>');
  return r;   	
 }, 
 { describe: 'config data' }, { describe: 'server data'})
  .run()  
  ;
 },
    		   
 { describe: 'callback argument' }, 
  function( _intent ){ console.log( 'Failed to register action server' );},
  1);
</script>


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