odk/examples/DevelopersGuide/ProfUNO/InterprocessConn/ConnectionAwareClient.java

   1 /* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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  35
  36 import java.awt.*;
  37 import java.awt.event.*;
  38
  39 import com.sun.star.uno.XComponentContext;
  40 import com.sun.star.lang.XMultiComponentFactory;
  41 import com.sun.star.frame.XComponentLoader;
  42 import com.sun.star.uno.UnoRuntime;
  43 import com.sun.star.connection.XConnector;
  44 import com.sun.star.connection.XConnection;
  45
  46 import com.sun.star.beans.XPropertySet;
  47
  48 import com.sun.star.lang.XComponent;
  49
  50 import com.sun.star.bridge.XBridgeFactory;
  51 import com.sun.star.bridge.XBridge;
  52
  53
  54 public class ConnectionAwareClient extends java.awt.Frame
  55     implements ActionListener , com.sun.star.lang.XEventListener
  56 {
  57     private final Button _btnWriter;
  58     private final Label _txtLabel;
  59     private final String _url;
  60
  61     private final XComponentContext _ctx;
  62
  63     private com.sun.star.frame.XComponentLoader _officeComponentLoader;
  64
  65     public ConnectionAwareClient( XComponentContext ctx , String url )
  66     {
  67         _url = url;
  68         _ctx = ctx;
  69
  70         Panel p1 = new Panel();
  71         _btnWriter = new Button("New writer");
  72         Button _btnCalc = new Button("New calc");
  73         _txtLabel = new Label( "disconnected" );
  74
  75         _btnWriter.addActionListener(this);
  76         _btnCalc.addActionListener(this);
  77         p1.add( _btnWriter );
  78         p1.add( _btnCalc );
  79         p1.add( _txtLabel );
  80
  81         addWindowListener(
  82             new WindowAdapter()
  83             {
  84                 @Override
  85                 public void windowClosing(WindowEvent event)
  86                 {
  87                     System.exit(0);
  88                 }
  89             }
  90             );
  91
  92         add( p1 );
  93     }
  94
  95     public void disposing( com.sun.star.lang.EventObject event )
  96     {
  97         // remote bridge has gone down, because the office crashed or was terminated.
  98         _officeComponentLoader = null;
  99         _txtLabel.setText( "disconnected" );
 100     }
 101
 102     public void actionPerformed( ActionEvent event )
 103     {
 104         try
 105         {
 106             String sUrl;
 107             if( event.getSource() == _btnWriter )
 108             {
 109                 sUrl = "private:factory/swriter";
 110             }
 111             else
 112             {
 113                 sUrl = "private:factory/scalc";
 114             }
 115             getComponentLoader().loadComponentFromURL(
 116                 sUrl, "_blank", 0,new com.sun.star.beans.PropertyValue[0] );
 117             _txtLabel.setText( "connected" );
 118         }
 119         catch ( com.sun.star.connection.NoConnectException exc )
 120         {
 121             _txtLabel.setText( exc.getMessage() );
 122         }
 123         catch ( com.sun.star.uno.Exception exc )
 124         {
 125             _txtLabel.setText( exc.getMessage() );
 126             throw new java.lang.RuntimeException( exc );
 127         }
 128     }
 129
 130     /** separates the uno-url into 3 different parts.
 131      */
 132     protected static String[] parseUnoUrl(  String url )
 133     {
 134         String [] aRet = new String [3];
 135
 136         if( ! url.startsWith( "uno:" ) )
 137         {
 138             return null;
 139         }
 140
 141         int semicolon = url.indexOf( ';' );
 142         if( semicolon == -1 )
 143             return null;
 144
 145         aRet[0] = url.substring( 4 , semicolon );
 146         int nextSemicolon = url.indexOf( ';' , semicolon+1);
 147
 148         if( semicolon == -1 )
 149             return null;
 150         aRet[1] = url.substring( semicolon+1, nextSemicolon );
 151
 152         aRet[2] = url.substring( nextSemicolon+1);
 153         return aRet;
 154     }
 155
 156
 157
 158     protected com.sun.star.frame.XComponentLoader getComponentLoader()
 159         throws com.sun.star.uno.Exception
 160     {
 161         XComponentLoader officeComponentLoader = _officeComponentLoader;
 162
 163         if( officeComponentLoader == null )
 164         {
 165             // instantiate connector service
 166             Object x = _ctx.getServiceManager().createInstanceWithContext(
 167                 "com.sun.star.connection.Connector", _ctx );
 168
 169             XConnector xConnector = UnoRuntime.queryInterface(XConnector.class, x);
 170
 171             String a[] = parseUnoUrl( _url );
 172             if( null == a )
 173             {
 174                 throw new com.sun.star.uno.Exception( "Couldn't parse uno-url "+ _url );
 175             }
 176
 177             // connect using the connection string part of the uno-url only.
 178             XConnection connection = xConnector.connect( a[0] );
 179
 180             x = _ctx.getServiceManager().createInstanceWithContext(
 181                 "com.sun.star.bridge.BridgeFactory", _ctx );
 182
 183             XBridgeFactory xBridgeFactory = UnoRuntime.queryInterface(
 184                 XBridgeFactory.class , x );
 185
 186             // create a nameless bridge with no instance provider
 187             // using the middle part of the uno-url
 188             XBridge bridge = xBridgeFactory.createBridge( "" , a[1] , connection , null );
 189
 190             // query for the XComponent interface and add this as event listener
 191             XComponent xComponent = UnoRuntime.queryInterface(
 192                 XComponent.class, bridge );
 193             xComponent.addEventListener( this );
 194
 195             // get the remote instance
 196             x = bridge.getInstance( a[2] );
 197
 198             // Did the remote server export this object ?
 199             if( null == x )
 200             {
 201                 throw new com.sun.star.uno.Exception(
 202                     "Server didn't provide an instance for" + a[2], null );
 203             }
 204
 205             // Query the initial object for its main factory interface
 206             XMultiComponentFactory xOfficeMultiComponentFactory = UnoRuntime.queryInterface( XMultiComponentFactory.class, x );
 207
 208             // retrieve the component context (it's not yet exported from the office)
 209             // Query for the XPropertySet interface.
 210             XPropertySet xProperySet = UnoRuntime.queryInterface( XPropertySet.class, xOfficeMultiComponentFactory );
 211
 212             // Get the default context from the office server.
 213             Object oDefaultContext =
 214                 xProperySet.getPropertyValue( "DefaultContext" );
 215
 216             // Query for the interface XComponentContext.
 217             XComponentContext xOfficeComponentContext =
 218                 UnoRuntime.queryInterface(
 219                 XComponentContext.class, oDefaultContext );
 220
 221
 222             // now create the desktop service
 223             // NOTE: use the office component context here !
 224             Object oDesktop = xOfficeMultiComponentFactory.createInstanceWithContext(
 225                 "com.sun.star.frame.Desktop", xOfficeComponentContext );
 226
 227             officeComponentLoader = UnoRuntime.queryInterface( XComponentLoader.class, oDesktop );
 228
 229             if( officeComponentLoader == null )
 230             {
 231                 throw new com.sun.star.uno.Exception(
 232                     "Couldn't instantiate com.sun.star.frame.Desktop" , null );
 233             }
 234             _officeComponentLoader = officeComponentLoader;
 235         }
 236         return officeComponentLoader;
 237     }
 238
 239     public static void main( String [] args ) throws java.lang.Exception
 240         {
 241             if( args.length != 1 )
 242             {
 243                 System.out.println( "usage: ConnectionAwareClient uno-url" );
 244                 return;
 245             }
 246             XComponentContext ctx =
 247                 com.sun.star.comp.helper.Bootstrap.createInitialComponentContext( null );
 248
 249             ConnectionAwareClient connAware = new ConnectionAwareClient( ctx, args[0]);
 250             connAware.pack();
 251             connAware.setVisible( true );
 252         }
 253 }
 254
 255 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */