Bug 162365 [Regression]Can't drag any item from library to another library
Description: Can't drag any item from library to another library Step to reproduce: 1. new a library and insert several items in it 2. new another one 3. drag the items form first library to the second Actual result: Can't drag.
UI/org.eclipse.birt.report.designer.ui.lib/src/org/eclipse/birt/report/designer/internal/lib/views/outline/LibraryOutlinePage.java
/*******************************************************************************
* Copyright (c) 2004 Actuate Corporation .
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* 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.internal.lib.views.outline;
import org.eclipse.birt.report.designer.core.model.views.outline.ReportElementModel;
import org.eclipse.birt.report.designer.internal.lib.views.outline.dnd.LibraryDropListener;
import org.eclipse.birt.report.designer.internal.ui.views.outline.DesignerOutlinePage;
import org.eclipse.birt.report.designer.internal.ui.views.outline.dnd.DesignerDragListener;
import org.eclipse.birt.report.designer.internal.ui.views.outline.dnd.DesignerDropListener;
import org.eclipse.birt.report.designer.internal.ui.views.outline.dnd.IDropConstraint;
import org.eclipse.birt.report.model.api.CascadingParameterGroupHandle;
import org.eclipse.birt.report.model.api.ModuleHandle;
import org.eclipse.birt.report.model.api.ParameterGroupHandle;
import org.eclipse.birt.report.model.api.ScalarParameterHandle;
import org.eclipse.gef.dnd.TemplateTransfer;
import org.eclipse.swt.dnd.DND;
import org.eclipse.swt.dnd.Transfer;
/**
 * Outline page to show the tree structure of library model.
 * 
 */
public class LibraryOutlinePage extends DesignerOutlinePage