| /******************************************************************************* |
| * Copyright (c) 2010 IBM Corporation 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: |
| * IBM Corporation - initial API and implementation |
| ******************************************************************************/ |
| |
| package org.eclipse.e4.ui.bindings.internal; |
| |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.Comparator; |
| import java.util.List; |
| import org.eclipse.core.commands.common.NotDefinedException; |
| import org.eclipse.core.commands.contexts.Context; |
| import org.eclipse.core.commands.contexts.ContextManager; |
| |
| public class ContextSet { |
| public static ContextSet EMPTY = new ContextSet(Collections.EMPTY_LIST); |
| |
| public static class CComp implements Comparator<Context> { |
| private ContextManager manager; |
| |
| public CComp(ContextManager manager) { |
| this.manager = manager; |
| } |
| |
| public int compare(Context o1, Context o2) { |
| if (o1.equals(o2)) { |
| return 0; |
| } |
| int l1 = getLevel(o1); |
| int l2 = getLevel(o2); |
| if (l1 != l2) { |
| return l1 - l2; |
| } |
| return o1.getId().compareTo(o2.getId()); |
| } |
| |
| private int getLevel(Context c) { |
| int l = 0; |
| try { |
| String parentId = c.getParentId(); |
| while (parentId != null) { |
| l++; |
| Context context = manager.getContext(parentId); |
| parentId = context.getParentId(); |
| } |
| } catch (NotDefinedException e) { |
| // TODO Auto-generated catch block |
| e.printStackTrace(); |
| } |
| return l; |
| } |
| } |
| |
| private static Comparator<Context> CONTEXT_COMP = null; |
| |
| public static void setComparator(Comparator<Context> comp) { |
| CONTEXT_COMP = comp; |
| } |
| |
| public static Comparator<Context> getComparator() { |
| return CONTEXT_COMP; |
| } |
| |
| private List<Context> contexts; |
| |
| public ContextSet(Collection<Context> c) { |
| contexts = new ArrayList<Context>(c); |
| Collections.sort(contexts, CONTEXT_COMP); |
| } |
| |
| public List<Context> getContexts() { |
| return contexts; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see java.lang.Object#equals(java.lang.Object) |
| */ |
| @Override |
| public boolean equals(Object o) { |
| if (o == this) { |
| return true; |
| } |
| if (!(o instanceof ContextSet)) { |
| return false; |
| } |
| return contexts.equals(((ContextSet) o).contexts); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see java.lang.Object#hashCode() |
| */ |
| @Override |
| public int hashCode() { |
| return contexts.hashCode(); |
| } |
| } |