Bug 122412 Need a scroll bar to display the full description in expression builder
Description: Need a scroll bar to display the full description in expression builder Step to reproduce: 1.Open the expression builder, choose BIRT JS Object->Total Expected result: All the methods and description could be displayed.Since we can't resize the dialog of expression builder, a scroll bar is needed Actual result: The methods and description are truncated due to the limited space (see the sreenshot in attachment)
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/ExpressionBuilder.java
* which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *  Actuate Corporation  - initial API and implementation
 *******************************************************************************/
package org.eclipse.birt.report.designer.ui.dialogs;
import org.eclipse.birt.report.designer.internal.ui.editors.js.JSDocumentProvider;
import org.eclipse.birt.report.designer.internal.ui.editors.js.JSEditorInput;
import org.eclipse.birt.report.designer.internal.ui.editors.js.JSSourceViewerConfiguration;
import org.eclipse.birt.report.designer.internal.ui.util.ExceptionHandler;
import org.eclipse.birt.report.designer.internal.ui.util.UIUtil;
import org.eclipse.birt.report.designer.nls.Messages;
import org.eclipse.birt.report.designer.ui.ReportPlatformUIImages;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.dialogs.TitleAreaDialog;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.ITextOperationTarget;
import org.eclipse.jface.text.source.CompositeRuler;
import org.eclipse.jface.text.source.LineNumberRulerColumn;
import org.eclipse.jface.text.source.SourceViewer;
import org.eclipse.jface.viewers.DoubleClickEvent;
import org.eclipse.jface.viewers.IDoubleClickListener;
import org.eclipse.jface.viewers.ILabelProviderListener;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.IStructuredContentProvider;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.ITableLabelProvider;
import org.eclipse.jface.viewers.SelectionChangedEvent;