| 1 | /******************************************************************************* |
| 2 | * Copyright (c) 2007, 2009 IBM Corporation and others. |
| 3 | * All rights reserved. This program and the accompanying materials |
| 4 | * are made available under the terms of the Eclipse Public License v1.0 |
| 5 | * which accompanies this distribution, and is available at |
| 6 | * http://www.eclipse.org/legal/epl-v10.html |
| 7 | * |
| 8 | * Contributors: |
| 9 | * IBM Corporation - initial API and implementation |
| 10 | *******************************************************************************/ |
| 11 | package org.eclipse.pde.api.tools.internal.descriptors; |
| 12 | |
| 13 | import java.util.ArrayList; |
| 14 | import java.util.List; |
| 15 | |
| 16 | import org.eclipse.pde.api.tools.internal.provisional.descriptors.IElementDescriptor; |
| 17 | import org.eclipse.pde.api.tools.internal.util.Util; |
| 18 | |
| 19 | /** |
| 20 | * Common base class for element descriptors. |
| 21 | * |
| 22 | * @since 1.0.0 |
| 23 | */ |
| 24 | public abstract class ElementDescriptorImpl implements IElementDescriptor, Comparable { |
| 25 | |
| 26 | /** |
| 27 | * Constant used for controlling tracing in the descriptor framework |
| 28 | */ |
| 29 | private static boolean Debug = Util.DEBUG; |
| 30 | |
| 31 | /** |
| 32 | * Method used for initializing tracing in the descriptor framework |
| 33 | */ |
| 34 | public static void setDebug(boolean debugValue) { |
| 35 | Debug = debugValue || Util.DEBUG; |
| 36 | } |
| 37 | |
| 38 | /* (non-Javadoc) |
| 39 | * @see org.eclipse.pde.api.tools.model.component.IElementDescriptor#getParent() |
| 40 | */ |
| 41 | public IElementDescriptor getParent() { |
| 42 | return null; |
| 43 | } |
| 44 | |
| 45 | /* (non-Javadoc) |
| 46 | * @see org.eclipse.pde.api.tools.model.component.IElementDescriptor#getPath() |
| 47 | */ |
| 48 | public IElementDescriptor[] getPath() { |
| 49 | List list = new ArrayList(); |
| 50 | IElementDescriptor element = this; |
| 51 | while (element != null) { |
| 52 | list.add(0, element); |
| 53 | element = element.getParent(); |
| 54 | } |
| 55 | return (IElementDescriptor[]) list.toArray(new IElementDescriptor[list.size()]); |
| 56 | } |
| 57 | |
| 58 | /* (non-Javadoc) |
| 59 | * @see java.lang.Comparable#compareTo(java.lang.Object) |
| 60 | */ |
| 61 | public int compareTo(Object o) { |
| 62 | if (o instanceof ElementDescriptorImpl) { |
| 63 | ElementDescriptorImpl element = (ElementDescriptorImpl) o; |
| 64 | return getComparable().compareTo(element.getComparable()); |
| 65 | } |
| 66 | if (Debug) { |
| 67 | System.err.println(o.getClass()); |
| 68 | } |
| 69 | return -1; |
| 70 | } |
| 71 | |
| 72 | /** |
| 73 | * Returns this element's comparable delegate. |
| 74 | * |
| 75 | * @return comparable |
| 76 | */ |
| 77 | protected abstract Comparable getComparable(); |
| 78 | } |