| /* |
| * Copyright 2000-2009 JetBrains s.r.o. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package com.intellij.util.ui.update; |
| |
| import com.intellij.util.ArrayUtil; |
| import org.jetbrains.annotations.NotNull; |
| |
| public interface ComparableObject { |
| Object[] NONE = ArrayUtil.EMPTY_OBJECT_ARRAY; |
| |
| @NotNull |
| Object[] getEqualityObjects(); |
| |
| class Impl implements ComparableObject { |
| private final Object[] myObjects; |
| |
| public Impl() { |
| this(NONE); |
| } |
| |
| public Impl(@NotNull Object... objects) { |
| myObjects = objects; |
| } |
| |
| @NotNull |
| @Override |
| public Object[] getEqualityObjects() { |
| return myObjects; |
| } |
| |
| @Override |
| public final boolean equals(Object obj) { |
| return ComparableObjectCheck.equals(this, obj); |
| } |
| |
| @Override |
| public final int hashCode() { |
| return ComparableObjectCheck.hashCode(this, super.hashCode()); |
| } |
| } |
| } |