appcontext.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.core;

import javax.microedition.lcdui.Display;
import javax.microedition.midlet.MIDlet;
import javax.microedition.rms.RecordStoreException;

import fildiv.jremcntl.common.core.JRemClientConnector;
import fildiv.jremcntl.common.core.JRemRuntimeException;
import fildiv.jremcntl.common.core.Logger;

public class AppContext {

	private final static String PREF_LAST_DEV_ADDR = "last_device_addr";
	private final static String PREF_LAST_URL = "last_url";
	
	private MIDlet midlet;
	private Display display;
	private Logger logger;
	private AppPreferences prefs;
	private JRemClientConnector connector;
	private String version;

	public AppContext(MIDlet midlet) {
		
		if (midlet == null)
			throw new IllegalArgumentException();
		
		this.display = Display.getDisplay(midlet);		

		try {
			prefs = new AppPreferences("jremcntl");
		} catch (RecordStoreException e) {
			throw new JRemRuntimeException(e);
		}
		
		connector = new JRemClientConnector();
		
		version = midlet.getAppProperty("MIDlet-Version");
	}

	public synchronized void setLogger(Logger logger) {
		
		if (logger == null)
			throw new IllegalArgumentException();
		
		this.logger = logger;
		connector.setLogger(logger);
	}
	
	public Logger getLogger() {
		return logger;
	}
	
	public MIDlet getMidlet() {
		return midlet;
	}
	
	public Display getDisplay() {
		return display;
	}
	
	public JRemClientConnector getConnector() {
		return connector;
	}
	
	public synchronized void setLastDeviceAddr(String lastDeviceURL) {
		prefs.put(PREF_LAST_DEV_ADDR, lastDeviceURL);
	}
	
	public String getLastDeviceAddr() {
		return prefs.get(PREF_LAST_DEV_ADDR);
	}

	public void savePrefs() {
		try {
			prefs.save();
		} catch (RecordStoreException e) {
			throw new JRemRuntimeException(e);
		}
	}

	public void setLastURL(String url) {
		prefs.put(PREF_LAST_URL, url);
	}
	
	public String getLastURL() {
		return prefs.get(PREF_LAST_URL);
	}

	public String getVersion() {
		return version;
	}
	
	public boolean isConnected() {
		return connector.isConnected();
	}
	
	public boolean inDebug() {
		return false;
	}
}