8

Sample App : MXNA Stand-alone viewer

 4 years ago
source link: http://www.mikechambers.com/blog/2004/04/29/sample-app-mxna-stand-alone-viewer/
Go to the source link to view the article. You can view the picture content, updated content and better typesetting reading experience. If the link is broken, please click the button below to view the snapshot at that time.
neoserver,ios ssh client

Sample App : MXNA Stand-alone viewer

Thursday, April 29, 2004

I recently moved moved offices, and am now sitting with the Flash team. One thing I noticed was that we have a nice 42″ Plasma screens, which was not being used. So, I decided to put together a simple application that would make it easy to help keep myself and the Flash team up with the latest news and information from the Flash community.

The application I created, MXNA Feed Scroller (original name, heh?), is a Flash based, fullscreen standalone application that displays information on the last 15 weblog posts from the Flash community. It is updated every 15 minutes. It gets its information from the MXNA web service API and uses the MXNA ActionScript 2 Library.

Here is a picture of the app in action:

Here is a screen shot of the app:

You can download the source code for the application from here.

And just because I like to look at the output from Sean Voisen’s Code Beautifier so much, here are the two classes for the application:

MXNAFeedScrollerController.as

import com.macromedia.mxna.MXNAWebService;
import com.macromedia.mxna.app.feedscroller.MXNAFeedView;

/* Associated with the main app controller clip */
class com.macromedia.mxna.app.feedscroller.MXNAFeedScrollerController extends MovieClip
{
	
	private var mxna:MXNAWebService;
	private var feedView:MXNAFeedView;
	
	private var category:String = "Flash";
	private var interval:Number = (60 * 15 * 1000); // 15 minutes
	
	/*
		Constructor. We do everything in onLoad to be sure
		everything has initialized
	*/
    public function MXNAFeedScrollerController()
    {
    }
    
	/*
		Called by Flash when the clip is laoded on stage. We do a bunch of
		initialization here.
	*/
    private function onLoad():Void
    { 	
    	Mouse.hide();
    	
    	mxna = new MXNAWebService();
    	
    	mxna.addEventListener("onGetPostsByCategory", this);
    	
    	//load the posts from the server
    	loadPosts();
    	
    	//reloads the posts from the server at the specified interval
    	setInterval(this, "loadPosts", interval);
    }
    
    /*
    	Loads the latests posts from the server
    */
    private function loadPosts(Void):Void
    {
    	mxna.getPostsByCategory(category);
    }
    
    /*
    	called when posts are loaded from the server
    */
    private function onGetPostsByCategory(eventObj:Object):Void
    {
    	feedView.setDataProvider(eventObj.posts);
    }

}

MXNAFeedView.as

/* Associated with the feedview clip */
class com.macromedia.mxna.app.feedscroller.MXNAFeedView extends MovieClip
{
	private var dp:Array;
	private var index:Number = 0;
	private var rankingClip:MovieClip;
	
	private var titleField:TextField;
	private var sourceField:TextField;
	private var postTimeField:TextField;
	private var contentField:TextField;
	private var urlField:TextField;
	
	/*How often (in milliseconds) the post is changed*/
	private var interval:Number = (15 * 1000); //15 seconds
	
	
	/*
		Constructor. We do everything in onLoad to be sure
		everything has initialized
	*/
    public function MXNAFeedView()
    {
    }
    
	/*
		Called by Flash when the clip is laoded on stage. We do a bunch of
		initialization here.
	*/
    private function onLoad():Void
    {
    	this.titleField.wordWrap = true;
		this.sourceField.wordWrap = true;
		this.postTimeField.wordWrap = true;
		this.contentField.wordWrap = true;
		this.urlField.wordWrap = true;
		
		setInterval(this, "rotatePost", interval);
    }
    
    /* Displays the next post */
    private function rotatePost()
    {
    	var tempIndex:Number = getNextIndex();
    	populateFields(dp[tempIndex]);
    }
    
    /*
    	returns the index for the next post.
    */
    private function getNextIndex()
    { 	
    	//if index is greater than or equal to the dp length
    	//then we are at the last item. reset to the first item
    	if(index == (dp.length - 1))
    	{
    		index = 0;
    	}
    	else
    	{
    		index++;
    	}
    	
    	return index;
    }
    
    /* specifies the dataprovider / array of posts */
    public function setDataProvider(dp:Array):Void
    {
    	var isFirstLoad:Boolean = (this.dp == null);
  	
    	this.dp = dp;
    	this.index = 0;
    	
    	if(isFirstLoad)
    	{
    		populateFields(dp[0]);
    	}
    }
    
    /*
    	populates the posts from a given object (from the post
    	dataprovider)
    */
    private function populateFields(data:Object):Void
    {
        var star:Number = Number(data.ranking);

        if(star < 1)
        {
            star = 1;
        }
        
        rankingClip.attachMovie("star" + star, "star", 999);
   	
   	
    	this.titleField.text = data.title;
		this.sourceField.text = data.name;
		this.postTimeField.text = data.dateAggregated;
		this.contentField.text = data.excerpt;
		this.urlField.text = data.link;
    }

}

Thanks to Josh Dura who cleaned up the look of the app for me.

if you find any bugs or have any questions or suggestions, post them in the comments.


report

Recommend

About Joyk


Aggregate valuable and interesting links.
Joyk means Joy of geeK