AOO410/main/odk/examples/DevelopersGuide/Charts/SelectionChangeListener.java

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import com.sun.star.awt.XMessageBox;
import com.sun.star.awt.XWindowPeer;
import com.sun.star.frame.XDesktop;
import com.sun.star.uno.UnoRuntime;
import com.sun.star.lang.*;
import com.sun.star.frame.XModel;
import com.sun.star.frame.XController;

// application specific classes
import com.sun.star.chart.*;
import com.sun.star.uno.XComponentContext;
import com.sun.star.uno.XInterface;

import com.sun.star.view.XSelectionChangeListener;
import com.sun.star.view.XSelectionSupplier;

import com.sun.star.table.CellRangeAddress;
import com.sun.star.table.XCellRange;
import com.sun.star.sheet.XCellRangeAddressable;

import com.sun.star.awt.Point;
import com.sun.star.awt.Rectangle;
import com.sun.star.awt.Size;
import com.sun.star.awt.XMessageBoxFactory;
import com.sun.star.awt.MessageBoxType;
import com.sun.star.awt.XWindow;

// __________ Implementation __________

/** Create a spreadsheet add some data.
 * Create a presentation and add a chart.
 * Connect the chart to a calc range via a listener
 *
 * Note: This example does not work in StarOffice 6.0.  It will be available
 * in the StarOffice Accessibility release.
 *
 * @author Björn Milcke
 */
public class SelectionChangeListener implements XSelectionChangeListener {
    public static void main( String args[] ) {
        SelectionChangeListener aMySelf = new SelectionChangeListener( args );
        
        aMySelf.run();
    }
    
    public SelectionChangeListener( String args[] ) {
        Helper aHelper = new Helper( args );
        
        maContext = aHelper.getComponentContext();
        
        CalcHelper aCalcHelper = new CalcHelper( aHelper.createSpreadsheetDocument() );
        
        // insert a cell range with 4 columns and 12 rows filled with random numbers
        XCellRange aRange = aCalcHelper.insertRandomRange( 4, 12 );
        CellRangeAddress aRangeAddress = ((XCellRangeAddressable) UnoRuntime.queryInterface(
            XCellRangeAddressable.class, aRange)).getRangeAddress();
        
        // change view to sheet containing the chart
        aCalcHelper.raiseChartSheet();
        
        // the unit for measures is 1/100th of a millimeter
        // position at (1cm, 1cm)
        Point aPos    = new Point( 1000, 1000 );
        
        // size of the chart is 15cm x 9.271cm
        Size  aExtent = new Size( 15000, 9271 );
        
        // insert a new chart into the "Chart" sheet of the
        // spreadsheet document
        maChartDocument = aCalcHelper.insertChart(
            "SampleChart",
            aRangeAddress,
            aPos,
            aExtent,
            "com.sun.star.chart.XYDiagram" );
    }
    
    // ____________________
    
    public void run() {
        boolean bTrying = true;
        
        while( bTrying ) {
            // start listening for selection changes
            XSelectionSupplier aSelSupp = (XSelectionSupplier) UnoRuntime.queryInterface(
                XSelectionSupplier.class,
                (((XModel) UnoRuntime.queryInterface(
                XModel.class, maChartDocument )).getCurrentController()) );
            if( aSelSupp != null ) {
                aSelSupp.addSelectionChangeListener( this );
                System.out.println( "Successfully attached as selection change listener" );
                bTrying = false;
            }
            
            // start listening for death of Controller
            XComponent aComp = (XComponent) UnoRuntime.queryInterface( XComponent.class, aSelSupp );
            if( aComp != null ) {
                aComp.addEventListener( this );
                System.out.println( "Successfully attached as dispose listener" );
            }
            
            try {
                Thread.currentThread().sleep( 500 );
            } catch( InterruptedException ex ) {
            }
        }
    }
    
    // ____________________
    
    // XEventListener (base of XSelectionChangeListener)
    public void disposing( EventObject aSourceObj ) {
        System.out.println( "disposing called.  detaching as listener" );
        
        // stop listening for selection changes
        XSelectionSupplier aCtrl = (XSelectionSupplier) UnoRuntime.queryInterface(
            XSelectionSupplier.class, aSourceObj );
        if( aCtrl != null )
            aCtrl.removeSelectionChangeListener( this );
        
        // remove as dispose listener
        XComponent aComp = (XComponent) UnoRuntime.queryInterface( XComponent.class, aSourceObj );
        if( aComp != null )
            aComp.removeEventListener( this );
        
        // bail out
        System.exit( 0 );
    }
    
    // ____________________
    
    // XSelectionChangeListener
    public void selectionChanged( EventObject aEvent ) {
        XController aCtrl = (XController) UnoRuntime.queryInterface( XController.class, aEvent.Source );
        if( aCtrl != null ) {
            XMultiComponentFactory mMCF = maContext.getServiceManager();
            
            MyMessageBox aMsgBox = new MyMessageBox(mMCF);
            
            aMsgBox.start();
            
            System.out.println("Listener finished");
        }
    }
    
    // __________ private __________
    
    private class MyMessageBox extends Thread{
        private XMultiComponentFactory mMCF;
        
        public MyMessageBox(XMultiComponentFactory xMCF){
            mMCF = xMCF;
        }
        
        public void run() {
            XDesktop aDesktop = null;
            XInterface aToolKit = null;
            try {
                Thread.sleep(1000);
            } catch (InterruptedException ex) {
                ex.printStackTrace();
            }
            try {
                Object oDesktop = mMCF.createInstanceWithContext("com.sun.star.frame.Desktop", maContext);
                Object oToolKit = mMCF.createInstanceWithContext("com.sun.star.awt.Toolkit", maContext);
                
                aDesktop = (XDesktop) UnoRuntime.queryInterface(XDesktop.class, oDesktop);
                aToolKit = (XInterface) UnoRuntime.queryInterface(XInterface.class, oToolKit);
            } catch (Exception ex) {
                ex.printStackTrace();
            }
            
            XWindow xWin = aDesktop.getCurrentFrame().getContainerWindow();
            XWindowPeer aWinPeer = (XWindowPeer) UnoRuntime.queryInterface(XWindowPeer.class, xWin);

            int button = com.sun.star.awt.MessageBoxButtons.BUTTONS_OK;
            XMessageBoxFactory aMBF = (XMessageBoxFactory) UnoRuntime.queryInterface(XMessageBoxFactory.class, aToolKit);
            XMessageBox xMB = aMBF.createMessageBox(aWinPeer, MessageBoxType.INFOBOX, button, "Event-Notify", "Listener was called, selcetion has changed");
            xMB.execute();
        }
    }
    
    private XChartDocument            maChartDocument;
    private XComponentContext         maContext;
}