/******************************************************************************* * Copyright (c) 2007, 2012 Association for Decentralized Information Management * in Industry THTH ry. * 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: * VTT Technical Research Centre of Finland - initial API and implementation *******************************************************************************/ package org.simantics.browsing.ui.swt.widgets.impl; import org.eclipse.jface.viewers.ISelection; import org.eclipse.swt.events.MouseEvent; import org.eclipse.swt.events.MouseListener; import org.simantics.db.WriteGraph; import org.simantics.db.common.request.WriteRequest; import org.simantics.db.exception.DatabaseException; import org.simantics.db.management.ISessionContext; import org.simantics.utils.ReflectionUtils; import org.simantics.utils.ui.ISelectionUtils; abstract public class MouseListenerImpl implements MouseListener, Widget { private ISessionContext context; private Object lastInput = null; protected T single; final private Class clazz; public MouseListenerImpl(ISessionContext context) { this.context = context; clazz = ReflectionUtils.getSingleParameterType(getClass()); } @Override public void mouseDown(MouseEvent e) { } @Override public void mouseUp(MouseEvent e) { } @Override public void mouseDoubleClick(MouseEvent e) { final Object input = lastInput; try { single = (T) ISelectionUtils.filterSingleSelection((ISelection)input, clazz); beforeApply(single); context.getSession().syncRequest(new WriteRequest() { @SuppressWarnings("unchecked") @Override public void perform(WriteGraph graph) throws DatabaseException { // T single = (T) ISelectionUtils.filterSingleSelection((ISelection)input, clazz); doubleClick(graph, single); } }); } catch (DatabaseException e1) { e1.printStackTrace(); } } @Override public void setInput(ISessionContext context, Object parameter) { this.context = context; lastInput = parameter; } public void beforeApply(T input) { } abstract public void doubleClick(WriteGraph graph, T input) throws DatabaseException; }