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import java.io.IOException;
import java.io.InputStream;
import java.util.Vector;

import javax.microedition.io.Connector;
import javax.microedition.io.HttpConnection;
import javax.microedition.io.StreamConnection;

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;

import net.rim.device.api.system.EncodedImage;
import net.rim.device.api.ui.Field;
import net.rim.device.api.ui.FieldChangeListener;
import net.rim.device.api.ui.UiApplication;
import net.rim.device.api.ui.component.BitmapField;
import net.rim.device.api.ui.component.ButtonField;
import net.rim.device.api.ui.component.RichTextField;
import net.rim.device.api.ui.component.SeparatorField;
import net.rim.device.api.ui.container.FlowFieldManager;
import net.rim.device.api.ui.container.MainScreen;
import net.rim.device.api.xml.parsers.DocumentBuilder;
import net.rim.device.api.xml.parsers.DocumentBuilderFactory;
import net.rim.device.api.xml.parsers.ParserConfigurationException;

public class Main extends UiApplication{
	private ProvidersScreen _providersScreen;
	private OfferingsScreen _offeringsScreen;
	private FlowFieldManager _fieldManager;
	private String pc_client_url;
    private Vector providers;
	
	public static void main(String[] args){
		 Main theApp = new Main();
	        theApp.enterEventDispatcher();
	}
	
	public Main(){
		_providersScreen = new ProvidersScreen();
		_offeringsScreen = new OfferingsScreen();
    	_fieldManager = new FlowFieldManager();
        pc_client_url = "http://10.252.9.109:9000";
        providers = new Vector();

    	_providersScreen.add(_fieldManager);
    	getContent();
		pushScreen(_providersScreen);		
	}
	
	public Vector getHTML(){
        Vector images = new Vector();
    	 StreamConnection s = null;
         try {
			s = (StreamConnection)Connector.open(pc_client_url+"/providers.xml");
			System.out.println("~~~~~~~~Connection to: " + pc_client_url + "/providers.xml");
			HttpConnection httpConn = (HttpConnection)s;                        
	         
	         int status = httpConn.getResponseCode();
              System.out.println("~~~~~~~~~~~~~~" + status);	         
	         if (status == HttpConnection.HTTP_OK)
	         {

	           System.out.println("~~~~~200 OK");
	             InputStream input = s.openInputStream();
	            
	             DocumentBuilderFactory docBuilderFactory = DocumentBuilderFactory.newInstance();
	             DocumentBuilder docBuilder = docBuilderFactory.newDocumentBuilder();
	             Document doc = docBuilder.parse(input);
	             doc.getDocumentElement ().normalize ();
	             NodeList listOfProviders = doc.getElementsByTagName("provider");
	             int totalProviders = listOfProviders.getLength();
	             for(int i=0; i<listOfProviders.getLength() ; i++){
	            	// System.out.println("~~~~~Looping in getHTML");
	                 Node firstPersonNode = listOfProviders.item(i);
	                 if(firstPersonNode.getNodeType() == Node.ELEMENT_NODE){
	                     Element firstPersonElement = (Element)firstPersonNode;
	                     NodeList firstNameList = firstPersonElement.getElementsByTagName("name");
	                     Element firstNameElement = (Element)firstNameList.item(0);
	                     
	                     NodeList firstImageList = firstPersonElement.getElementsByTagName("image");
	                     Element firstImageElement = (Element)firstImageList.item(0);


	                     System.out.println("~~~~~~" + firstPersonElement.toString());
                         System.out.println("~~~~~~~~~~~~~~~Adding image URL.");
	                     images.addElement(firstImageElement.getChildNodes().item(0).getNodeValue().trim());
	                     providers.addElement(firstNameElement.getChildNodes().item(0).getNodeValue().trim());
	                 }//end of if clause


	             }//end of for loop with s var
	         }//end if status is ok

		} catch (IOException e) {
			// TODO Auto-generated catch block
			System.out.println("~~~~I caught an IOException");
			e.printStackTrace();
		} catch (ParserConfigurationException e) {
			// TODO Auto-generated catch block
			System.out.println("~~~~~I caught a ParserConfigurationException");
			e.printStackTrace();
		} catch (SAXException e) {
			System.out.println("~~~~I caught a SAXException");
			// TODO Auto-generated catch block
			e.printStackTrace();
		}

    	return images;
    }


/*
 * When this method is called, it goes to pc_client_url/providers.xml, and grabs the images
 * for the providers, turns them into an Encoded Image, and then adds it to the mainscreen
 * to be displayed.     
 */
    public void getContent(){
       Vector encoded_image_fields = new Vector();
       Vector image_urls = getHTML();

    	//add the code to call providers.xml, then iterate over the xml i get, adding images.
    	//crud! there's no arraylist!?
    	System.out.print("~~~~~~~~~~~");
    	//this for loop is empty. crud.
    	for(int i = 0; i < image_urls.size(); i++){
//    		text_fields.insertElementAt(new RichTextField(), i);
//    		RichTextField temp = (RichTextField)text_fields.elementAt(i);
//    		temp.setText(image_urls.elementAt(i).toString());
//    		mscreen.add((RichTextField) text_fields.elementAt(i));
//    		mscreen.add(new SeparatorField());
    		System.out.println("~~~~Adding: " + image_urls.elementAt(i).toString());
    		encoded_image_fields.insertElementAt(new BitmapField(), i);
            byte[] data = new byte[100000];
            StringBuffer raw = new StringBuffer();
            try {
            	System.out.println(pc_client_url + "/images/providers/" + image_urls.elementAt(i).toString());
				StreamConnection s = (StreamConnection)Connector.open(pc_client_url + "/images/providers/" + image_urls.elementAt(i).toString());
				HttpConnection c = (HttpConnection)s;
				InputStream i2 = c.openInputStream();
                int len = 0;
				while ( -1 != (len = i2.read(data)) )
                {                   
                    raw.append(new String(data, 0, len));
                }   
                c.close();
                s.close();
                i2.close();
				//Now, I need to store the input stream's content into a Byte array.
            } catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
            byte[] content = raw.toString().getBytes();
            //EncodedImage image = EncodedImage.createEncodedImage(content, 0, content.length);
            //_bitmap.setImage(image);
    		BitmapField temp = (BitmapField)encoded_image_fields.elementAt(i);
    		temp.setImage(EncodedImage.createEncodedImage(content, 0, content.length));
    		_fieldManager.add((BitmapField) encoded_image_fields.elementAt(i));
    		ButtonField but_temp = new ButtonField(providers.elementAt(i).toString());
    		but_temp.setChangeListener(listenerUS);
    		_fieldManager.add(but_temp);
    		_fieldManager.add(new SeparatorField());
    		
    		//System.out.println("~~~~~~~~~~" + image_urls.elementAt(i).toString());

    	}//end for loop

    	
    }

    FieldChangeListener listenerUS = new FieldChangeListener() {
    	public void fieldChanged(Field field, int context) {
    	System.out.println("US was pressed");
    	pushScreen(_offeringsScreen);
    	}
    	};
	
	private class OfferingsScreen extends MainScreen{
		public OfferingsScreen(){
			RichTextField text = new RichTextField();
			text.setText("You did it!");
			add(text);
		}
	}
	
	private class ProvidersScreen extends MainScreen{
		public ProvidersScreen(){
		
		}

	}
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
}