Bug 130495 Get rid of SessionHandleAdapter
Now, we use SessionHandleAdapter to keep current active report deisng. That's a bad practive for editor swith and rebuild will cuase lots of problmes. Need find way to replace it.
UI/org.eclipse.birt.report.designer.ui.editors/src/org/eclipse/birt/report/designer/ui/editors/MultiPageReportEditor.java
import org.eclipse.ui.forms.editor.IFormPage;
import org.eclipse.ui.part.IPageBookViewPage;
import org.eclipse.ui.part.MultiPageSelectionProvider;
import org.eclipse.ui.part.PageBookView;
import org.eclipse.ui.views.contentoutline.IContentOutlinePage;
/**
 * 
 * Base multipage editor for report editors. Clients can subclass this class to
 * create customize report editors. Report editor pages can contributed through
 * Extendtion Point
 * org.eclipse.birt.report.designer.ui.editors.multiPageEditorContributor.
 * 
 * @see IReportEditorPage
 */
public class MultiPageReportEditor extends AbstractMultiPageEditor implements
		IPartListener,
		IReportEditor
{
	private boolean fLastDirtyState;
	private ReportMultiBookPage fPalettePage;
	private ReportMultiBookPage outlinePage;
	private ReportMultiBookPage dataPage;
	private boolean fIsHandlingActivation;
	private long fModificationStamp = -1;;
	private ModuleHandle model;
	
	
	
	
	private static class FormEditorSelectionProvider extends