package com.j2medev.chapter6;

import java.io.*;
import javax.microedition.io.Connector;
import javax.microedition.lcdui.*;
import javax.microedition.media.*;
import javax.microedition.media.control.VideoControl;
import javax.wireless.messaging.*;

public class SendMMSMessageUI extends Form implements CommandListener,Runnable{
    
    private MessageMIDlet midlet = null;
    private byte[] image = null;
    //拍照定義的Player和VideoControl
    private Player player = null;
    private VideoControl vc = null;
    private TextField subject = new TextField("subject","",30,TextField.ANY);
    private TextField to = new TextField("mobile","",30,TextField.PHONENUMBER);
    private TextField content = new TextField("content","",120,TextField.ANY);
    private Command sendCommand = new Command("Send",Command.OK,1);
    private Command backCommand = new Command("back",Command.BACK,1);
    private Command captureCommand = new Command("capture",Command.OK,1);
    
    public SendMMSMessageUI(MessageMIDlet midlet) {
        super("send mms");
        this.midlet = midlet;
        //初始化Player
        startPlayer();
        setCommandListener(this);
    }
    
    private void startPlayer(){
        if(player == null){
            try {
                //創建Player
                player = Manager.createPlayer("capture://video");
                player.realize();
                vc = (VideoControl)player.getControl("VideoControl");
                if(vc != null){
                    //把Item追加到Form上
                    append((Item)vc.initDisplayMode(VideoControl.USE_GUI_PRIMITIVE,null));
                }
                player.start();
                addCommand(backCommand);
                addCommand(captureCommand);
            } catch (IOException ex) {
                ex.printStackTrace();
            } catch (MediaException ex) {
                ex.printStackTrace();
            }
        }
    }
    //非常重要，釋放player    
    private void releasePlayer(){
        if(player != null){
            player.close();
            player = null;
        }
    }
    public void run(){
        //等待界面
        Form wait = new Form("waiting");
        midlet.setCurrent(wait);
        String url = "mms://"+to.getString()+":"+midlet.getAppProperty("Application-ID");
        String sub = subject.getString();
        String cont = content.getString();
        MessageConnection conn = null;
        try{
            //建立MessageConnection并構建消息
            conn = (MessageConnection)Connector.open(url);
            MultipartMessage mms = (MultipartMessage)conn.newMessage(MessageConnection.MULTIPART_MESSAGE);
            mms.setAddress(url);
            mms.setSubject(sub);
            InputStream is = getClass().getResourceAsStream("/test.png");
            MessagePart part1 = new MessagePart(image,"image/png","test_img","/test.png",null);
            MessagePart part2 = new MessagePart(cont.getBytes("UTF-8"),0,cont.getBytes().length,"text/plain","test_text","/test.txt","UTF-8");
            mms.addMessagePart(part1);
            mms.addMessagePart(part2);
            conn.send(mms);//發送
            midlet.displaySuccess("the message has been sent to "+to.getString());
        }catch(IOException ex){
            ex.printStackTrace();
            midlet.displayMessage(ex.getMessage(),this,AlertType.ERROR,"Failed");
        }
    }

    public void commandAction(Command cmd,Displayable displayable){
        if(cmd == backCommand){
            releasePlayer();
            midlet.setMainUI();
        }else if(cmd == sendCommand){
            new Thread(this).start();
        }else if(cmd == captureCommand){
            //拍照
            new Thread(){
                public void run(){
                    try {
                        image = vc.getSnapshot(null);
                    } catch (MediaException ex) {
                        ex.printStackTrace();
                    }
                    //清除以前的拍照屏幕
                    deleteAll();
                    append(subject);
                    append(to);
                    append(Image.createImage(image,0,image.length));
                    append(content);
                    addCommand(sendCommand);
                    removeCommand(captureCommand);
                    //不要忘記釋放Player
                    releasePlayer();
                }
            }.start();
        }
    }
    
}