| /* |
| * Copyright (C) 2010 The Android Open Source Project |
| * |
| * 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.android.util; |
| |
| /** |
| * A Pair class is simply a 2-tuple for use in this package. We might want to |
| * think about adding something like this to a more central utility place, or |
| * replace it by a common tuple class if one exists, or even rewrite the layout |
| * classes using this Pair by a more dedicated data structure (so we don't have |
| * to pass around generic signatures as is currently done, though at least the |
| * construction is helped a bit by the {@link #of} factory method. |
| * |
| * ================================================================================================= |
| * WARNING |
| * This copy of the class is to be used only by layoutlib and is not to be changed, EVER. |
| * To use Pair outside of layoutlib, use com.android.utils.Pair, found in common.jar instead. |
| * ================================================================================================= |
| * |
| * @param <S> The type of the first value |
| * @param <T> The type of the second value |
| * |
| * @deprecated This is used for backward compatibility with layoutlib-api. Use com.android.utils.Pair instead |
| */ |
| @Deprecated |
| public class Pair<S,T> { |
| private final S mFirst; |
| private final T mSecond; |
| |
| // Use {@link Pair#of} factory instead since it infers generic types |
| private Pair(S first, T second) { |
| this.mFirst = first; |
| this.mSecond = second; |
| } |
| |
| /** |
| * Return the first item in the pair |
| * |
| * @return the first item in the pair |
| */ |
| public S getFirst() { |
| return mFirst; |
| } |
| |
| /** |
| * Return the second item in the pair |
| * |
| * @return the second item in the pair |
| */ |
| public T getSecond() { |
| return mSecond; |
| } |
| |
| /** |
| * Constructs a new pair of the given two objects, inferring generic types. |
| * |
| * @param first the first item to store in the pair |
| * @param second the second item to store in the pair |
| * @param <S> the type of the first item |
| * @param <T> the type of the second item |
| * @return a new pair wrapping the two items |
| */ |
| public static <S,T> Pair<S,T> of(S first, T second) { |
| return new Pair<S,T>(first,second); |
| } |
| |
| @Override |
| public String toString() { |
| return "Pair [first=" + mFirst + ", second=" + mSecond + "]"; |
| } |
| |
| @Override |
| public int hashCode() { |
| final int prime = 31; |
| int result = 1; |
| result = prime * result + ((mFirst == null) ? 0 : mFirst.hashCode()); |
| result = prime * result + ((mSecond == null) ? 0 : mSecond.hashCode()); |
| return result; |
| } |
| |
| @SuppressWarnings("unchecked") |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) |
| return true; |
| if (obj == null) |
| return false; |
| if (getClass() != obj.getClass()) |
| return false; |
| Pair other = (Pair) obj; |
| if (mFirst == null) { |
| if (other.mFirst != null) |
| return false; |
| } else if (!mFirst.equals(other.mFirst)) |
| return false; |
| if (mSecond == null) { |
| if (other.mSecond != null) |
| return false; |
| } else if (!mSecond.equals(other.mSecond)) |
| return false; |
| return true; |
| } |
| } |