userinterface.java.bak

我在学校写的assignment,是一个java-based 实时通讯工具。 用socket写的

/*
 *this class is mainly for create the user chatting GUI
 *it can get the user input 
 *then 1) copy it to Display pane
 *	2) send the user input out
 *
 *
 * last edit by Kong Chong Shun, John 
*/

import javax.swing.*;
import javax.swing.text.*;
import java.awt.*;              //for layout managers and more
import java.awt.event.*;        //for action events
import java.net.URL;
import java.io.IOException;




public class UserInterface extends JPanel implements ActionListener, Runnable
{
	private String newline = "\n";	
	private JButton sendButton = new JButton("Send");
	private static JTextPane inputPane, displayPane;
	private String defaultFont = "SansSerif";
	private String defaultIconString = ":$:";
	
	
	public static StyledDocument inputdoc, displaydoc;
	
	public static ObjectReceiver r = null;
	public static ObjectSender sender = null;
	
	public static JFrame frame = null;
	
	//contrustor 
	public UserInterface()
	{
	
		setLayout(new BorderLayout());
	
	//Create a text pane (for display)
		displayPane = new JTextPane();
		
		JScrollPane displayScrollPane = new JScrollPane(displayPane);
		//enable the scroll bar 
		displayScrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
	
		//Set Prefer size
		displayScrollPane.setPreferredSize(new Dimension(400, 300));

		//set minimun size
		displayScrollPane.setMinimumSize(new Dimension(100, 100));
		
	//Create a text pane (for User input)	
		inputPane = new JTextPane();
		
		JScrollPane inputScrollPane = new JScrollPane(inputPane);
		//enable the scroll bar 
	inputScrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);

		//Set Prefer size
		inputScrollPane.setPreferredSize(new Dimension(400, 300));

		//set minimun size
		inputScrollPane.setMinimumSize(new Dimension(100, 100));		
	
	//create a panel for user input
		JPanel mainInputPane = new JPanel();
		mainInputPane.setLayout(new BorderLayout());
		
		//add the send button to the listener
		sendButton.addActionListener(this);
		
		
		mainInputPane.add(sendButton, BorderLayout.EAST);
		mainInputPane.add(inputScrollPane);	
	
	//Put two textpane together
		JSplitPane splitPane = new JSplitPane(JSplitPane.VERTICAL_SPLIT, displayScrollPane, mainInputPane);

		splitPane.setOneTouchExpandable(true);
		splitPane.setResizeWeight(0.5);
		
		add(splitPane);
		
		
	//add style to Pane
		
		
		inputdoc = inputPane.getStyledDocument();
		addStylesToDocument(inputdoc);
		
		displaydoc = displayPane.getStyledDocument();
		addStylesToDocument(displaydoc);
	
		
		//displayPane.setText("NONONO");
	}
	
//send out fuuction not finish
	public void actionPerformed(ActionEvent event)
	{

		//copy the message from UserInput Pane to display Pane
		//send the message out	
		//clear inputPane
		
		if ((JButton)event.getSource() == sendButton)
		{
			String input = this.getUserInput();
			if (input != null)
			{	insertTextToDisplay(input);
System.out.println("insert");

				//send it out 
				System.out.println("Message from UI :" + input);
				sender.sendObject(input);
				
				//clear inputPane
				clearinputPane();
			}
		}	
		else
			System.out.println("Listener is noted");	
	}
	
	public void clearinputPane()
	{
		inputPane.setText("");
	}
	
	//return the String that user typed in the UserInput Pane
	public String getUserInput()
	{	
		String temp = null;
		try
		{
			temp = inputPane.getText(0,inputdoc.getLength() );
System.out.println("Text got :"); 
System.out.println(temp);
		
		}
		catch (BadLocationException ble)
		{
			System.err.println("Couldn't insert initial text into text pane.");
		}
		return temp;
	}
	
	//insert the Text to the Display Pane
	public void insertTextToDisplay(String userInput)
	{
		try
		{
		displaydoc.insertString(displaydoc.getLength(),"GAGAGA" + newline + newline, displaydoc.getStyle("regular"));
		}
		catch(Exception e)
		{}
		
		//create style doc
		//add style to doc
		//check the string if it contain graphic
		//if yes, divide it into different part
		//& insert style & string array to the doc
		System.out.println("UI start to insert text : " + userInput);
		
		int i = 0;
		int firstIndex = -1;
		
		while (userInput.indexOf(":$:", i) != -1)
		{
			System.out.println("Loop");
			firstIndex = userInput.indexOf(":$:", i);
			
			i = firstIndex + 3; 	//becuase the string is ":$"
			
			if (userInput.indexOf(":$:", i) != -1)
			{
System.out.println(userInput.substring(0, firstIndex ));
		
System.out.println(userInput.substring(i, userInput.indexOf(":$:", i)));
				try 
				{
					//inesrt text
					displaydoc.insertString(displaydoc.getLength(),userInput.substring(0, firstIndex ), displaydoc.getStyle("regular"));
					//insert Icon
					displaydoc.insertString(displaydoc.getLength()," ", displaydoc.getStyle(userInput.substring(i, userInput.indexOf(":$:", i))));
				}
				catch (BadLocationException ble)
				{
					System.err.println("Couldn't insert initial text into text pane.");
				}
				
				userInput = userInput.substring(userInput.indexOf(":$:", i) + 3);
				
System.out.println(userInput);
				
			}
		}	
System.out.println("UI insert text no icon string or remaining no icon string \n" + userInput);		
		//no icon string or remaining no icon string
		if (userInput != null)
		{
			try 
			{
				//inesrt text
System.out.println("displaydoc.getLength() = " + displaydoc.getLength()); 
				displaydoc.insertString(displaydoc.getLength(),userInput + newline + newline, displaydoc.getStyle("regular"));
System.out.println("displaydoc.getLength() = " + displaydoc.getLength()); 
System.out.println("afafafafa");	

			//displayPane.append(userInput);
			}
			catch (BadLocationException ble)
			{
				System.err.println("Couldn't insert initial text into text pane.");
			}		
		}	
		//displayPane.requestFocus();
		//displayPane.revalidate();

		//displayPane.setText(userInput);
		//displayPane.setText("NONONO");
		//displayPane.repaint();
		//displayPane.validate();
		//validate();
		//updateUI() ;
		//repaint();
	}
	
	//add default Style to Document
	protected void addStylesToDocument(StyledDocument doc)
	{
		//add default style to the doc
		
		//Initialize styles
		Style def = StyleContext.getDefaultStyleContext().getStyle(StyleContext.DEFAULT_STYLE);
		Style regular = doc.addStyle("regular", def);
		StyleConstants.setFontFamily(def, defaultFont);
		
		Style s = doc.addStyle("italic", regular);
		StyleConstants.setItalic(s, true);

		s = doc.addStyle("bold", regular);
		StyleConstants.setBold(s, true);

		/*
		:happy:  
		:sad:  
		:winky:  
		:silly:  
		:laughing:  
		:angry:  
		:censored:  
		:bitter:  
		:shocked:  
		:surprised:    
		:cool:  
		:blush:  
		:shy:  
		:kiss:  
		:smooch:  
		:heart: 
		*/
		
		//:happy:
		s = doc.addStyle("happy", regular);
		StyleConstants.setAlignment(s, StyleConstants.ALIGN_CENTER);
		ImageIcon happyIcon = createIamgeIcon("face/happy.gif", defaultIconString + "happy" + defaultIconString);

		if (happyIcon != null)
		{
			StyleConstants.setIcon(s, happyIcon);
		}		
		
		//:sad: 
		s = doc.addStyle("sad", regular);
		StyleConstants.setAlignment(s, StyleConstants.ALIGN_CENTER);
		ImageIcon sadIcon = createIamgeIcon("face/sad.gif", defaultIconString + "sad" + defaultIconString);

		if (sadIcon != null)
		{
			StyleConstants.setIcon(s, sadIcon);
		}
		
		//:winky: 
		s = doc.addStyle("winky", regular);
		StyleConstants.setAlignment(s, StyleConstants.ALIGN_CENTER);
		ImageIcon winkyIcon = createIamgeIcon("face/sad.gif", defaultIconString + "winky" + defaultIconString);

		if (winkyIcon != null)
		{
			StyleConstants.setIcon(s, winkyIcon);
		}
		
		//:silly: 
		s = doc.addStyle("silly", regular);
		StyleConstants.setAlignment(s, StyleConstants.ALIGN_CENTER);
		ImageIcon sillyIcon = createIamgeIcon("face/silly.gif", defaultIconString + "silly" + defaultIconString);

		if (sillyIcon != null)
		{
			StyleConstants.setIcon(s, sillyIcon);
		}
		
		//:laughing: 
		s = doc.addStyle("laughing", regular);
		StyleConstants.setAlignment(s, StyleConstants.ALIGN_CENTER);
		ImageIcon laughingIcon = createIamgeIcon("face/laughing.gif", defaultIconString + "laughing" + defaultIconString);

		if (laughingIcon != null)
		{
			StyleConstants.setIcon(s, laughingIcon);
		}
		
		//:angry: 
		s = doc.addStyle("angry", regular);
		StyleConstants.setAlignment(s, StyleConstants.ALIGN_CENTER);
		ImageIcon angryIcon = createIamgeIcon("face/angry.gif", defaultIconString + "angry" + defaultIconString);

		if (angryIcon != null)
		{
			StyleConstants.setIcon(s, angryIcon);
		}
		
		//:censored: 
		s = doc.addStyle("censored", regular);
		StyleConstants.setAlignment(s, StyleConstants.ALIGN_CENTER);
		ImageIcon censoredIcon = createIamgeIcon("face/censored.gif", defaultIconString + "censored" + defaultIconString);

		if (censoredIcon != null)
		{
			StyleConstants.setIcon(s, censoredIcon);
		}
		
		//:bitter: 
		s = doc.addStyle("bitter", regular);
		StyleConstants.setAlignment(s, StyleConstants.ALIGN_CENTER);
		ImageIcon bitterIcon = createIamgeIcon("face/bitter.gif", defaultIconString + "bitter" + defaultIconString);

		if (bitterIcon != null)
		{
			StyleConstants.setIcon(s, bitterIcon);
		}
		
		//:shocked: 
		s = doc.addStyle("shocked", regular);
		StyleConstants.setAlignment(s, StyleConstants.ALIGN_CENTER);
		ImageIcon shockedIcon = createIamgeIcon("face/shocked.gif", defaultIconString + "shocked" + defaultIconString);

		if (shockedIcon != null)
		{
			StyleConstants.setIcon(s, shockedIcon);
		}
		
		//:surprised: 
		s = doc.addStyle("surprised", regular);
		StyleConstants.setAlignment(s, StyleConstants.ALIGN_CENTER);
		ImageIcon surprisedIcon = createIamgeIcon("face/surprised.gif", defaultIconString + "surprised" + defaultIconString);

		if (surprisedIcon != null)
		{
			StyleConstants.setIcon(s, surprisedIcon);
		}
		
		//:cool: 
		s = doc.addStyle("cool", regular);
		StyleConstants.setAlignment(s, StyleConstants.ALIGN_CENTER);
		ImageIcon coolIcon = createIamgeIcon("face/cool.gif", defaultIconString + "cool" + defaultIconString);

		if (coolIcon != null)
		{
			StyleConstants.setIcon(s, coolIcon);
		}
		
		//:blush: 
		s = doc.addStyle("blush", regular);
		StyleConstants.setAlignment(s, StyleConstants.ALIGN_CENTER);
		ImageIcon blushIcon = createIamgeIcon("face/blush.gif", defaultIconString + "blush" + defaultIconString);

		if (blushIcon != null)
		{
			StyleConstants.setIcon(s, blushIcon);
		}
		
		//:shy: 
		s = doc.addStyle("shy", regular);
		StyleConstants.setAlignment(s, StyleConstants.ALIGN_CENTER);
		ImageIcon shyIcon = createIamgeIcon("face/shy.gif", defaultIconString + "shy" + defaultIconString);

		if (shyIcon != null)
		{
			StyleConstants.setIcon(s, shyIcon);
		}
		
		//:kiss: 
		s = doc.addStyle("kiss", regular);
		StyleConstants.setAlignment(s, StyleConstants.ALIGN_CENTER);
		ImageIcon kissIcon = createIamgeIcon("face/kiss.gif", defaultIconString + "kiss" + defaultIconString);

		if (kissIcon != null)
		{
			StyleConstants.setIcon(s, kissIcon);
		}
		
		//:smooch: 
		s = doc.addStyle("smooch", regular);
		StyleConstants.setAlignment(s, StyleConstants.ALIGN_CENTER);
		ImageIcon smoochIcon = createIamgeIcon("face/smooch.gif", defaultIconString + "smooch" + defaultIconString);

		if (smoochIcon != null)
		{
			StyleConstants.setIcon(s, smoochIcon);
		}
		
		//:heart: 
		s = doc.addStyle("heart", regular);
		StyleConstants.setAlignment(s, StyleConstants.ALIGN_CENTER);
		ImageIcon heartIcon = createIamgeIcon("face/heart.gif", defaultIconString + "heart" + defaultIconString);

		if (heartIcon != null)
		{
			StyleConstants.setIcon(s, heartIcon);
		}
 




	}
	
	//return IamgeIcon by calling with path
	protected static ImageIcon createIamgeIcon(String path, String description)
	{
		//can the full path of from the class file
		java.net.URL imgURL = UserInterface.class.getResource(path);

		if (imgURL != null)
		{
			return new ImageIcon(imgURL, description);
		}
		else
		{
			System.err.println("Couldn't find file: " + path);
			return null;
		}
	}	
	
	//create & show the GUI
	public static void createAndShowGUI()
	{
		//nice window decorations
		JFrame.setDefaultLookAndFeelDecorated(true);

		//create and set exit window
		frame = new JFrame("Test TextPane");
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

		//Create and setting the content pane
		JComponent newContentPane = new UserInterface();
		newContentPane.setOpaque(true);	//content panes must be opaque
		frame.setContentPane(newContentPane);

		//Display the window
		frame.pack();
		frame.setVisible(true);	
	}

	public void run()
	{
		createAndShowGUI();
	}
	
}