tFile = new Text( container, SWT.BORDER );
tFile.setLayoutData( new GridData( GridData.FILL_HORIZONTAL ) );
tFile.setEditable( false );
IEMFValueProperty prop = EMFEditProperties.value( editingDomain, KEY_VALUE_PAIR__VALUE );
dbContext.bindValue( tProp.observeDelayed( DELAY, tFile ), prop.observe( o ),
new EMFUpdateValueStrategy( EMFUpdateValueStrategy.POLICY_ON_REQUEST ), new EMFUpdateValueStrategy() );
Button bFilesystem = new Button( container, SWT.NONE );
bFilesystem.setText( "Filesystem ..." );
bFilesystem.addSelectionListener( new SelectionAdapter() {
@Override