chatwin.java

一个使用Java实现的类似与QQ的聊天程序。使用了Hibernate组建。可用于学习Java网络编程和Hiberante数据库组件的学习

package com.jim.client;

import java.util.Date;

import org.apache.log4j.Logger;
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.SashForm;
import org.eclipse.swt.custom.StyleRange;
import org.eclipse.swt.custom.StyledText;
import org.eclipse.swt.events.KeyAdapter;
import org.eclipse.swt.events.KeyEvent;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.TraverseEvent;
import org.eclipse.swt.events.TraverseListener;
import org.eclipse.swt.events.TypedEvent;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.layout.FormAttachment;
import org.eclipse.swt.layout.FormData;
import org.eclipse.swt.layout.FormLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;

import com.jim.database.JIMUser;
import com.jim.net.Message;
import com.swtdesigner.SWTResourceManager;

public class ChatWin extends Shell {

	private StyledText inputText;
	private StyledText recordText;
	private Logger log = Logger.getLogger(ChatWin.class);
	private int key;
	private int myJimno;
	public int getKey() {
		return key;
	}

	public void setKey(int key) {
		this.key = key;
	}
	

	/**
	 * Launch the application
	 * @param args
	 */
	public static void main(String args[]) {
		try {
			Display display = Display.getDefault();
			ChatWin shell = new ChatWin(display, SWT.SHELL_TRIM);
			shell.open();
			shell.layout();
			while (!shell.isDisposed()) {
				if (!display.readAndDispatch())
					display.sleep();
			}
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	/**
	 * Create the shell
	 * @param display
	 * @param style
	 */
	public ChatWin(Display display, int style) {
		super(display, style);
		createContents();
	}

	/**
	 * Create contents of the window
	 */
	protected void createContents() {
		setText("【聊天】");
		setSize(500, 375);
		setLayout(new FormLayout());
		setImage(SWTResourceManager.getImage(ChatWin.class, "resources/1.bmp"));
		setMinimumSize(new Point(250, 200));
		


		final SashForm composite = new SashForm(this, SWT.BORDER | SWT.VERTICAL);

		recordText = new StyledText(composite, SWT.V_SCROLL | SWT.MULTI | SWT.READ_ONLY | SWT.WRAP);
		recordText.setFont(SWTResourceManager.getFont("宋体", 11, SWT.NONE));
		composite.setOrientation(SWT.VERTICAL);
		recordText.setText("");


		final FormData formData = new FormData();
		formData.right = new FormAttachment(100, -5);
		formData.top = new FormAttachment(0, 5);
		formData.left = new FormAttachment(0, 5);
		composite.setLayoutData(formData);
		composite.setLayout(new FormLayout());

		Button closeB;
		closeB = new Button(this, SWT.NONE);
		closeB.addSelectionListener(new SelectionAdapter() {
			public void widgetSelected(SelectionEvent event) {
				close(event);
			}
		});
		formData.bottom = new FormAttachment(closeB, -13, SWT.DEFAULT);

		inputText = new StyledText(composite, SWT.MULTI | SWT.BORDER | SWT.WRAP);
		inputText.setFont(SWTResourceManager.getFont("宋体", 11, SWT.NONE));
		inputText.setTextLimit(500);
		inputText.addKeyListener(new KeyAdapter() {
			public void keyReleased(KeyEvent event) {
				//log.debug(event);
				if(event.keyCode == 13 && event.stateMask == SWT.CTRL){
					event.doit = false;
					sendMsg(event);
				}
			}
		});


		composite.setWeights(new int[] {2, 1 });
		final FormData formData_1 = new FormData();
		formData_1.bottom = new FormAttachment(100, -14);
		formData_1.top = new FormAttachment(100, -36);
		formData_1.right = new FormAttachment(100, -127);
		formData_1.left = new FormAttachment(100, -192);
		closeB.setLayoutData(formData_1);
		closeB.setText("关闭");

		Button sendB;
		sendB = new Button(this, SWT.NONE);
		sendB.setToolTipText("使用Ctrl+Enter发送消息");
		sendB.addSelectionListener(new SelectionAdapter() {
			public void widgetSelected(SelectionEvent event) {
				sendMsg(event);
			}
		});
		final FormData formData_2 = new FormData();
		formData_2.bottom = new FormAttachment(100, -14);
		formData_2.top = new FormAttachment(100, -36);
		formData_2.right = new FormAttachment(100, -42);
		formData_2.left = new FormAttachment(100, -107);
		sendB.setLayoutData(formData_2);
		sendB.setText("发送");
		//
	}

	protected void close(SelectionEvent event) {
		MainWin.removeWin(key);
		this.close();
		this.dispose();
		
	}

	protected void sendMsg(TypedEvent event) {
		/*String inStr = inputText.getText();
		if(inStr.equals("abc"))
			recordsText.setForeground(Display.getCurrent().getSystemColor(SWT.COLOR_GREEN));
		else
			recordsText.setForeground(Display.getCurrent().getSystemColor(SWT.COLOR_BLACK));
		inStr += inputText.getLineDelimiter();
		recordsText.append(inStr);
		inputText.setText("");*/
		String inStr = inputText.getText();
		log.debug(inStr.length());
		if(event instanceof KeyEvent){
			if(inStr.endsWith("\r\n"))
				inStr = inStr.substring(0, inStr.length()-2);
		}
		if(inStr == null || inStr.equals("")){
			inputText.setFocus();
			log.debug("empty message");
			return;
		}
		inStr += inputText.getLineDelimiter();
		Message msg = new Message(MainWin.client.getUser().getJimno(),key);
		msg.addContent(inStr);
		msg.setSendTime(new Date());
		MainWin.client.sendMessage(msg);
		appendMsg(msg);
		/*int start = recordText.getText().length();
		recordText.append(inStr);
		recordText.setSelection(recordText.getCharCount());
		int length = inStr.length();
		if (inStr.startsWith("abc")) {
			StyleRange sr = new StyleRange(start, length, Display
					.getDefault().getSystemColor(SWT.COLOR_GREEN), recordText
					.getBackground());
			recordText.setStyleRange(sr);
		}*/
		inputText.setText("");
		inputText.setFocus();
	}

	@Override
	protected void checkSubclass() {
		// Disable the check that prevents subclassing of SWT components
	}
	public synchronized void appendMsg(Message msg){
		int start = recordText.getText().length();
		int length = msg.getContent().length();
		JIMUser u = MainWin.client.getUser();
		if(myJimno != msg.getFrom() ){
			u = MainWin.client.getUser().getFriend(msg.getFrom());		
		}
		String toAppend = "";
		if (u != null) {
			if (u.getNicknm() == null || u.getNicknm().equals(""))
				toAppend +="[" +u.getJimno()+"]";
			else
				toAppend +="["+ u.getNicknm()+"]";
		}		
		toAppend += " "+msg.getSendTime().toLocaleString()+ "\r\n";
		length += toAppend.length();
		recordText.append(toAppend);
		recordText.append(msg.getContent());
		recordText.setSelection(recordText.getCharCount());
		if(myJimno != msg.getFrom() ){
			StyleRange sr = new StyleRange(start, length, Display
					.getDefault().getSystemColor(SWT.COLOR_GREEN), recordText
					.getBackground());
			recordText.setStyleRange(sr);
		}
	}

	public synchronized int getMyJimno() {
		return myJimno;
	}

	public synchronized void setMyJimno(int myJimno) {
		this.myJimno = myJimno;
	}
}