| /******************************************************************************* |
| * Copyright (c) 2008, 2009 Matthew Hall and others. |
| * 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: |
| * Matthew Hall - initial API and implementation (bug 194734) |
| * Matthew Hall - bug 262287 |
| ******************************************************************************/ |
| |
| package org.eclipse.core.databinding.property; |
| |
| import java.util.EventObject; |
| |
| import org.eclipse.core.databinding.observable.IDiff; |
| import org.eclipse.core.internal.databinding.property.Util; |
| |
| /** |
| * Event object events in the properties API |
| * |
| * @since 1.2 |
| */ |
| public final class SimplePropertyEvent extends EventObject { |
| private static final long serialVersionUID = 1L; |
| |
| /** |
| * Event type constant indicating that the property changed |
| */ |
| public static final int CHANGE = notInlined(1); |
| |
| /** |
| * Event type constant indicating that the property became stale |
| */ |
| public static final int STALE = notInlined(2); |
| |
| private static int notInlined(int i) { |
| return i; |
| } |
| |
| /** |
| * The type of property event that occured |
| */ |
| public final int type; |
| |
| /** |
| * The property on which the event took place |
| */ |
| public final IProperty property; |
| |
| /** |
| * If event == CHANGE, a diff object describing the change in state, or null |
| * for an unknown change. |
| */ |
| public final IDiff diff; |
| |
| /** |
| * Constructs a PropertyChangeEvent with the given attributes |
| * |
| * @param type |
| * the property type |
| * @param source |
| * the property source |
| * @param property |
| * the property that changed on the source |
| * @param diff |
| * a diff describing the change in state, or null if the change |
| * is unknown or not applicable. |
| */ |
| public SimplePropertyEvent(int type, Object source, IProperty property, |
| IDiff diff) { |
| super(source); |
| this.type = type; |
| this.property = property; |
| this.diff = diff; |
| } |
| |
| public boolean equals(Object obj) { |
| if (obj == this) |
| return true; |
| if (obj == null) |
| return false; |
| if (getClass() != obj.getClass()) |
| return false; |
| |
| SimplePropertyEvent that = (SimplePropertyEvent) obj; |
| return Util.equals(getSource(), that.getSource()) |
| && Util.equals(this.property, that.property) |
| && Util.equals(this.diff, that.diff); |
| } |
| |
| public int hashCode() { |
| int hash = 17; |
| hash = hash * 37 + getSource().hashCode(); |
| hash = hash * 37 + property.hashCode(); |
| hash = hash * 37 + (diff == null ? 0 : diff.hashCode()); |
| return hash; |
| } |
| } |