439 lines
10 KiB
Java
439 lines
10 KiB
Java
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import java.awt.*;
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import java.awt.event.*;
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import java.util.*;
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import mqoa.*;
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import com.ms.com.*;
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import com.ms.io.*;
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import java.io.*;
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import com.ms.wfc.ui.MessageBox;
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//
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//
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// DistDraw-
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// This Class is used to manage all the creation and managment of MSMQ queues
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// and events. It also uses to manage the sending and receiving of messages.
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//
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//
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public class DistDraw extends Frame implements ScribbleL, ActionListener, _DMSMQEventEvents
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{
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ScribbleC scribble = null;
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TextField txtSend = null;
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TextField txtReceive = null;
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Button sendButton = null;
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MenuItem menuConnect = null;
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MenuItem menuClear = null;
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TextField statusBar = null;
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IMSMQQueue msmqSend = null;
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IMSMQQueue msmqReceive = null;
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MSMQEvent msmqEvent = null;
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String loginName = null;
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private ConnectionPointCookie cookie = null;
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public static void main(String[] args)
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{
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DistDraw st = new DistDraw();
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//
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// Check DS status.
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//
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if (!st.IsDsEnabledLocally())
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{
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MessageBox.show("This application is not designed to run on DS-Disabled environment", "Error", MessageBox.OK);
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System.exit(0);
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}
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st.setSize(320, 200);
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st.show();
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st.start();
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}
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public boolean IsDsEnabledLocally()
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{
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IMSMQApplication2 qapp2 = (IMSMQApplication2) new MSMQApplication();
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boolean fIsDsEnabeledLocaly = qapp2.getIsDsEnabled() ;
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return fIsDsEnabeledLocaly;
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}
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public DistDraw()
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{
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setLayout(new BorderLayout());
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scribble = new ScribbleC();
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scribble.addScribbleListener(this);
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add("Center", scribble);
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// Create and add text panel
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Panel textPanel = new Panel();
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textPanel.setLayout(new BorderLayout(4,4));
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txtSend = new TextField(25);
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txtReceive = new TextField(25);
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txtReceive.setEditable(false);
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sendButton = new Button("Send");
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textPanel.add("Center", txtSend);
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textPanel.add("East", sendButton);
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textPanel.add("South", txtReceive);
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sendButton.addActionListener(this);
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add("North", textPanel);
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// Add menu for connecting and clearing screen
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Menu fileMenu = new Menu("File");
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Menu viewMenu = new Menu("View");
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menuConnect = new MenuItem("Connect");
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menuClear = new MenuItem("Clear");
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fileMenu.add(menuConnect);
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viewMenu.add(menuClear);
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MenuBar menuBar = new MenuBar();
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menuBar.add(fileMenu);
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menuBar.add(viewMenu);
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setMenuBar(menuBar);
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menuConnect.addActionListener(this);
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menuClear.addActionListener(this);
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//Add status bar
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statusBar = new TextField();
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statusBar.setEditable(false);
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add("South", statusBar);
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// Enable events for closing window
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enableEvents(AWTEvent.WINDOW_EVENT_MASK);
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}
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public void start()
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{
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NameDlg d = new NameDlg(this, "Please Enter Your Name", "Login");
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d.pack();
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d.show();
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loginName = d.getName();
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setTitle(loginName);
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createReceiveQueue(loginName);
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}
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public void processWindowEvent(WindowEvent e)
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{
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if(e.getID() == e.WINDOW_CLOSING)
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{
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System.exit(0);
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}
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}
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// Callback for the ScribbleC (scribble canvas) class
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public void strokeCreated(Stroke stroke)
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{
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sendData(stroke, 3);
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}
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public void sendData(Object data, int priority)
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{
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// Check for send queue
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if(msmqSend != null)
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{
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// Create safe array based on stroke
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SafeArrayOutputStream safeOutStream = new SafeArrayOutputStream();
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ObjectOutputStream objOutStream = null;
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try
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{
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objOutStream= new ObjectOutputStream(safeOutStream);
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objOutStream.writeObject(data);
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objOutStream.flush();
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safeOutStream.close();
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}
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catch(Exception e)
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{
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System.out.println("Error in ObjectOutputStream");
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}
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SafeArray bytes = safeOutStream.getSafeArray();
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// Create message to send
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IMSMQMessage msmqMsg=(IMSMQMessage)new MSMQMessage();
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Variant msgbody=new Variant();
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msgbody.putSafeArray ( bytes );
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msmqMsg.setBody ( msgbody );
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msmqMsg.setPriority( priority);
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Variant noParam = new Variant();
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noParam.noParam();
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msmqMsg.Send ( msmqSend, noParam);
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}
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}
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// Callback for the connect menu
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public void actionPerformed(ActionEvent e)
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{
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if(e.getSource() == menuConnect)
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{
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// Connect to friend queue
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NameDlg nd = new NameDlg(this, "Please Enter Friends Name", "Enter");
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nd.pack();
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nd.show();
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if(nd.getName() != "")
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{
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System.out.println(nd.getName());
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boolean retval = createSendQueue(nd.getName());
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if(retval)
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setTitle(loginName + " connected to "+nd.getName());
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}
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}
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else if(e.getSource() == menuClear)
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{
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scribble.clear();
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sendData(new ClrAction(), 6);
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}
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else if(e.getSource() == sendButton)
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{
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// Send text
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sendData(txtSend.getText(), 5);
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}
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}
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public void createReceiveQueue(String queueName)
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{
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Variant noParam = new Variant();
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Variant vLabel = new Variant() ;
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noParam.noParam ();
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vLabel.putString (queueName) ;
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IMSMQQuery query = (IMSMQQuery)new MSMQQuery();
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IMSMQQueueInfos qinfos = null;
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IMSMQQueueInfo qinfo = null;
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showStatus("Looking up Queue "+queueName);
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// Search for queues with this name
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qinfos = query.LookupQueue (noParam, noParam, vLabel, noParam, noParam, noParam, noParam, noParam, noParam) ;
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qinfos.Reset();
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qinfo = qinfos.Next();
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if(qinfo != null)
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{
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// Get the queue if it exists
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try
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{
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showStatus("Attempting to open Queue "+queueName);
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msmqReceive=qinfo.Open ( MQACCESS.MQ_RECEIVE_ACCESS, MQSHARE.MQ_DENY_NONE );
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}
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catch(Exception e)
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{
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showStatus("Attempt to open "+queueName+" failed");
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System.out.println(e.toString());
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}
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}
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else
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{
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// Create a queue
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Variant isTransactional;
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Variant IsWorldReadable;
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qinfo = (IMSMQQueueInfo) new MSMQQueueInfo();
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qinfo.setPathName(".\\"+queueName); // setPathName using JactiveX, putPathName using Typelib wizard
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isTransactional = new Variant();
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isTransactional.putBoolean(false);
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IsWorldReadable = new Variant();
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IsWorldReadable.putBoolean(false);
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qinfo.setLabel(queueName);
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try
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{
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showStatus("Creating Queue named "+queueName);
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qinfo.Create(IsWorldReadable, isTransactional);
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}
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catch(Exception e)
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{
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System.out.println(e.toString());
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}
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showStatus("Opening Queue named "+queueName);
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msmqReceive=qinfo.Open ( MQACCESS.MQ_RECEIVE_ACCESS, MQSHARE.MQ_DENY_NONE );
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}
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// Enable notifications on the receive queue
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if ( msmqReceive != null )
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{
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msmqEvent = new MSMQEvent();
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showStatus("Enabling Notification for "+queueName);
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msmqReceive.EnableNotification((IMSMQEvent)msmqEvent, noParam, noParam);
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try
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{
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cookie = new ConnectionPointCookie(msmqEvent, this, Class.forName("mqoa._DMSMQEventEvents"));
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showStatus("Done.");
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}
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catch(Exception ex)
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{
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showStatus("Unable setup Notification");
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}
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}
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}
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public boolean createSendQueue(String queueName)
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{
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Variant noParam = new Variant();
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Variant vLabel = new Variant() ;
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noParam.noParam ();
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vLabel.putString (queueName) ;
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IMSMQQuery query = (IMSMQQuery)new MSMQQuery();
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IMSMQQueueInfos qinfos = null;
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IMSMQQueueInfo qinfo = null;
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// Search for queues with this name
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showStatus("Looking up Queue "+queueName);
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qinfos = query.LookupQueue (noParam, noParam, vLabel, noParam, noParam, noParam, noParam, noParam, noParam) ;
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qinfos.Reset();
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qinfo = qinfos.Next();
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if ( qinfo != null )
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{
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// We have at least one queue in this list
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// Get the queue if it exists
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showStatus("Attempting to open Queue "+queueName);
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msmqSend=qinfo.Open ( MQACCESS.MQ_SEND_ACCESS, MQSHARE.MQ_DENY_NONE );
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if ( msmqSend == null )
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{
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// We were not sucessful at opening the queue
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showStatus("Attempt to open "+queueName+" failed");
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System.out.println("Cannot open existing queue");
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return false;
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}
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else
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{
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showStatus("Done.");
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return true;
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}
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}
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else
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{
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showStatus("Cannot find \"Friend\" "+queueName);
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return false;
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}
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}
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// Event handlers for DMSMQEventEvents
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public void Arrived(Object pdispQueue, int cursor)
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{
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IMSMQMessage msmqMsg;
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Variant wantbody=new Variant();
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wantbody.putBoolean( true );
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Variant noParam = new Variant();
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noParam.noParam();
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try
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{
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showStatus("Message arrived.");
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msmqMsg=msmqReceive.Receive ( noParam, noParam, wantbody, noParam);
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if ( msmqMsg != null )
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{
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// Get Variant from message and convert to SafeArray
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Variant body = msmqMsg.getBody();
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SafeArray bytes = body.toSafeArray();
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SafeArrayInputStream safeInStream = new SafeArrayInputStream(bytes);
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ObjectInputStream objInStream = new ObjectInputStream(safeInStream);
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Object data = objInStream.readObject();
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if(data instanceof Stroke)
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scribble.addStroke((Stroke)data);
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else if(data instanceof String)
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txtReceive.setText((String)data);
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else if(data instanceof ClrAction)
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scribble.clear();
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}
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}
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catch(Exception e)
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{
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showStatus("An error occured while processing message");
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System.out.println(e.toString());
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}
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showStatus("Done.");
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//Reenable notifications from the input queue
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msmqReceive.EnableNotification((IMSMQEvent)msmqEvent, noParam, noParam);
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}
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public void ArrivedError(Object pdispQueue, int lErrorCode, int cursor)
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{
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showStatus("An error occurred.");
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Variant noParam = new Variant();
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noParam.noParam ();
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//Reenable notifications from the input queue
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msmqReceive.EnableNotification((IMSMQEvent)msmqEvent, noParam, noParam);
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}
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public void showStatus(String txt)
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{
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statusBar.setText(txt);
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}
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}
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//
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//
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// SafeArrayOutputStream -
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// This class is used to convert data from an OutputStream to a SafeArray .
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//
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//
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class SafeArrayOutputStream extends ByteArrayOutputStream
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{
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public SafeArray getSafeArray()
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{
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// Allocate an array the size of the vector
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byte[] byteArray = toByteArray();
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// Create the safearray
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SafeArray array = new SafeArray(Variant.VariantByte,
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byteArray.length);
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// Fill in safearray
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array.setBytes(0, byteArray.length, byteArray, 0);
|
||
|
|
|
||
|
|
return array;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
//
|
||
|
|
// SafeArrayInputStream-
|
||
|
|
// This class is used to convert data from a SafeArray
|
||
|
|
// to an InputStream.
|
||
|
|
//
|
||
|
|
//
|
||
|
|
class SafeArrayInputStream extends ByteArrayInputStream
|
||
|
|
{
|
||
|
|
public SafeArrayInputStream(SafeArray array)
|
||
|
|
{
|
||
|
|
super(array.toByteArray());
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|