使用GraphAPI的简单Facebook_网站.Swc在As3中

Posted 2021-02-24

a handy class to manage facebook connections using as3

package
	{
	import com.adobe.images.JPGEncoder;
	import com.facebook.graph.Facebook;
	import com.facebook.graph.data.FacebookAuthResponse;
	import flash.display.Bitmap;
	import flash.display.BitmapData;
	import flash.display.DisplayObject;
	import flash.events.Event;
	import flash.events.EventDispatcher;
	import flash.geom.Point;
	import flash.geom.Rectangle;
	import flash.net.URLLoader;
	import flash.net.URLLoaderDataFormat;
	import flash.net.URLRequest;
	import flash.system.Security;
	import flash.utils.ByteArray;
 
	public class FacebookGraphAPI extends EventDispatcher
	{
		private var _permissions : Array;		
		private var _appID : String ;
		private var _appSecret : String ;
		private var _userAuthResponse : FacebookAuthResponse = null;
		private var _apiSecuredPath:String = "https://graph.facebook.com";
		private var _apiUnsecuredPath:String = "http://graph.facebook.com";
		private var _userAuth : Boolean = false; 	
 
		public function FacebookGraphAPI (appID : String, appSecret : String, permissions : Array) 
		{
			_appID = appID;
			_appSecret = appSecret;
			_permissions = permissions;
			Security.loadPolicyFile(_apiSecuredPath + "/crossdomain.xml");
	  		Security.loadPolicyFile(_apiUnsecuredPath + "/crossdomain.xml");
			Facebook.init(_appID,handleIinit)
		}
		private function handleIinit(response:Object, fail:Object):void
		{	
			SimpleFacebook.log.text ="iniciando";
			if (response != null)
			{
		  		Facebook.api("me/permissions",OnCompleteRequestPermissions);
		  	}
		  	else
		  	{
		  		dispatchEvent(new FacebookGraphAPIEvent(FacebookGraphAPIEvent.FINISHED_INIT));
		  	}
		}
		// check if the user has granted all the nedded permissions
		private function OnCompleteRequestPermissions(response : Object, fail : Object):void
		{
			var askForAllPermissions :Boolean = false
			for each (var perm : String in _permissions)
			{
				if (response[0][perm] == "undefined" || response[0][perm] == null)
				{
					askForAllPermissions = true;
					break;
				}
			}
			if (askForAllPermissions)
			{
				dispatchEvent(new FacebookGraphAPIEvent(FacebookGraphAPIEvent.FINISHED_INIT));
			}
			else
			{
				dispatchEvent(new FacebookGraphAPIEvent(FacebookGraphAPIEvent.FINISHED_INIT));
				AuthorizedUser(Facebook.getAuthResponse() as FacebookAuthResponse);
			}
 
		}
		private function AuthorizedUser (response : FacebookAuthResponse) : void
		{
			_userAuthResponse = response;
		}
 
		public function Login(e : Event = null) : void
		{
			if (_userAuthResponse == null)
			{
		  		Facebook.login(handleLogin, {scope: _permissions.toString()});
		 	}
		 	else
		 	{
		 		dispatchEvent(new FacebookGraphAPIEvent(FacebookGraphAPIEvent.LOGGED_IN));
		 	}
		}
		private function handleLogin(response:Object, fail:Object = null):void
		{
			if (Facebook.getAuthResponse().uid != null)
		    {
		    	dispatchEvent(new FacebookGraphAPIEvent(FacebookGraphAPIEvent.LOGGED_IN));
		    	AuthorizedUser(Facebook.getAuthResponse() as FacebookAuthResponse);
		   	}
 
		}
		public function PostScore(score : Number, callback : Function) : void
		{
			var data:Object = new Object();
			data.score = score;
  			data.client_id = _appID;
            data.client_secret =_appSecret;
			               Facebook.api(_userAuthResponse.uid+"/scores/",callback,data,"POST");
		}
 
		public function FetchScores(callback : Function) : void
		{
			Facebook.api(_appID+"/scores/",callback);
			/*
			function callback(response : Object) 
			for each(var object : Object in response)
			{
				object.score;
				object.user.name;
				object.user.id;
			}
			*/
		}
		public function FetchUserImage(userID : String) : URLLoader
		{
			var pictureUrl: String = Facebook.getImageUrl(userID);
			var loader:URLLoader = new URLLoader();
		        loader.dataFormat = URLLoaderDataFormat.BINARY;  
		   	var request:URLRequest = new URLRequest(pictureUrl);
		   	loader.load(request);
		   	return loader;
		   	/*
		   	FetchUserImage(userID).addEventListener(Event.COMPLETE,EventListener);
		   	function EventListener (e:Event)
		   	{
			   	var loader:Loader = new Loader();
		       	loader.loadBytes(e.currentTarget.data);
		      	addChild(loader);
          	 }
		   	*/
		}
		public function PostImageToAlbum(message : String,image : DisplayObject,clipRect : Rectangle ) : void
		{
			var bd:BitmapData = new BitmapData(clipRect.width,clipRect.height,true,00000000);
			var AuxBData : BitmapData = new BitmapData(image.width,image.height,true,0);
			AuxBData.draw(image,null,null,null,clipRect);
			bd.copyPixels(AuxBData,clipRect,new Point(0,0));
			var result:Bitmap = new Bitmap(bd);
			var params: Object = new Object;
			var encoder:JPGEncoder = new JPGEncoder(75);
            var bytes:ByteArray = encoder.encode(result.bitmapData);
            params.message = message;
			params.image = bytes;
			params.fileName = "image.jpg";
			Facebook.api("/me/photos",null,params,"POST");
		}
		public function PostToUserWall(userId : String,message : String, name :String,caption : String, description : String, link : String) : void
		{
			var params: Object = new Object;
			params.message = message;
			params.name = name;
			params.caption = caption;
			params.description = description;
			params.link = link;
			Facebook.api("/"+userId+"/feed",null,params,"POST");
		}
	}
}
 
 
//////////////////////////////////EVENTS CLASS/////////////////////////////////
 
 
package
{
	import flash.events.Event;
 
	public class FacebookGraphAPIEvent extends Event
	{
		public static const FINISHED_INIT:String = 
            "FacebookGraphAPIEventFINISH_INIT";
        	public static const LOGGED_IN:String = 
            "FacebookGraphAPIEventLOGGED_IN";
                public var error : String = null
         	public var data : Object = null;
 		public function FacebookGraphAPIEvent(type : String,data : Object = null, error : String = null)
		{
			super(type);
			this.error = error;
			this.data = data
		}
 
	}
}