commandpanelscreen.java

一个基于J2ME技术的程序,使你可以远程控制装有服务端的PC.

/*
 * JRemCntl - Copyright (C) 2007 Filippo Di Vattimo <[e-mail]>
 * See COPYING
 */

package fildiv.jremcntl.client.ui;

import fildiv.jremcntl.client.core.AppContext;
import fildiv.jremcntl.client.core.JRemClientProtocol;
import fildiv.jremcntl.client.core.ServerResponse;
import fildiv.jremcntl.client.core.ServerResponseListener;
import fildiv.jremcntl.common.core.Config;
import fildiv.jremcntl.common.core.Context;
import fildiv.jremcntl.common.core.Logger;
import fildiv.jremcntl.common.core.PlainTextCmdResult;
import fildiv.jremcntl.common.proto.JRemProtocolMessagesType;
import fildiv.jremcntl.common.util.JRemUtils;

public class CommandPanelScreen extends AbstractScreen 
	implements ServerResponseListener {

	private FastCommandScreen fastCmdScreen = null;
	private ListCommandScreen listScreen = null;
		
	private Screen currScreen = null;
	private Context ctx;
	
	public CommandPanelScreen(AppContext appCtx) {
		super(appCtx);
		
		fastCmdScreen = new FastCommandScreen(appCtx);
		fastCmdScreen.setBackScreen(this);
		listScreen = new ListCommandScreen(appCtx);
		listScreen.setBackScreen(this);
		
		currScreen = null;		
	}

	public void setContext(Context ctx) {
		
		if (this.ctx != ctx)
			currScreen = null;
		
		this.ctx = ctx;
		
		fastCmdScreen.setContext(ctx);
		listScreen.setContext(ctx);
	}
	
	public void setLogger(Logger logger) {
		
		fastCmdScreen.setLogger(logger);
		listScreen.setLogger(logger);		
	}

	public void setProtocol(JRemClientProtocol proto) {
		
		fastCmdScreen.setProtocol(proto);
		listScreen.setProtocol(proto);
	}
	
	public void swithView() {
		
		if (currScreen instanceof FastCommandScreen)
			currScreen = listScreen;
		else 
			currScreen = fastCmdScreen;
		
		currScreen.show();		
	}
	
	protected void onActivate() {
				
		if (currScreen == null) {
			
			switch(ctx.getDefView()) {
			case Config.TYPE_VIEW_FASTVIEW:
				currScreen = fastCmdScreen;
				break;
				
			case Config.TYPE_VIEW_LISTVIEW:
				currScreen = listScreen;
				break;
			}
		}
		
		if (currScreen == fastCmdScreen && 
			!JRemUtils.hasKeysAssigned(ctx))
			currScreen = listScreen;
		
		currScreen.show();	
	}

	public void reset() {
		fastCmdScreen.reset(true);
		listScreen.reset(true);
	}

	public void connectionClosed() {
	}

	public void connectionLost() {
	}

	public void receivedCommandResponse(ServerResponse response) {

		if (response.getType() != 
			JRemProtocolMessagesType.MSG_TYPE_SEND_COMMAND_RESULT)
			return;

		// only PlainTextCmdResult is supported
		
		PlainTextCmdResult pt = 
			PlainTextCmdResult.createFromByteReader(response.getByteReader());

		String tickerMessage = pt.getMessage();
		
		if (fastCmdScreen != null)
			fastCmdScreen.setTickerMessage(tickerMessage);
		
		if (listScreen != null)
			listScreen.setTickerMessage(tickerMessage);
	}
}