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      1 /*
      2  * Copyright (C) 2017 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 package android.view.autofill;
     17 
     18 import android.annotation.TestApi;
     19 import android.os.Parcel;
     20 import android.os.Parcelable;
     21 import android.view.View;
     22 
     23 /**
     24  * A unique identifier for an autofill node inside an {@link android.app.Activity}.
     25  */
     26 public final class AutofillId implements Parcelable {
     27 
     28     private final int mViewId;
     29     private final boolean mVirtual;
     30     private final int mVirtualId;
     31 
     32     /** @hide */
     33     @TestApi
     34     public AutofillId(int id) {
     35         mVirtual = false;
     36         mViewId = id;
     37         mVirtualId = View.NO_ID;
     38     }
     39 
     40     /** @hide */
     41     @TestApi
     42     public AutofillId(AutofillId parent, int virtualChildId) {
     43         mVirtual = true;
     44         mViewId = parent.mViewId;
     45         mVirtualId = virtualChildId;
     46     }
     47 
     48     /** @hide */
     49     public AutofillId(int parentId, int virtualChildId) {
     50         mVirtual = true;
     51         mViewId = parentId;
     52         mVirtualId = virtualChildId;
     53     }
     54 
     55     /** @hide */
     56     public int getViewId() {
     57         return mViewId;
     58     }
     59 
     60     /** @hide */
     61     public int getVirtualChildId() {
     62         return mVirtualId;
     63     }
     64 
     65     /** @hide */
     66     public boolean isVirtual() {
     67         return mVirtual;
     68     }
     69 
     70     /////////////////////////////////
     71     //  Object "contract" methods. //
     72     /////////////////////////////////
     73 
     74     @Override
     75     public int hashCode() {
     76         final int prime = 31;
     77         int result = 1;
     78         result = prime * result + mViewId;
     79         result = prime * result + mVirtualId;
     80         return result;
     81     }
     82 
     83     @Override
     84     public boolean equals(Object obj) {
     85         if (this == obj) return true;
     86         if (obj == null) return false;
     87         if (getClass() != obj.getClass()) return false;
     88         final AutofillId other = (AutofillId) obj;
     89         if (mViewId != other.mViewId) return false;
     90         if (mVirtualId != other.mVirtualId) return false;
     91         return true;
     92     }
     93 
     94     @Override
     95     public String toString() {
     96         final StringBuilder builder = new StringBuilder().append(mViewId);
     97         if (mVirtual) {
     98             builder.append(':').append(mVirtualId);
     99         }
    100         return builder.toString();
    101     }
    102 
    103     @Override
    104     public int describeContents() {
    105         return 0;
    106     }
    107 
    108     @Override
    109     public void writeToParcel(Parcel parcel, int flags) {
    110         parcel.writeInt(mViewId);
    111         parcel.writeInt(mVirtual ? 1 : 0);
    112         parcel.writeInt(mVirtualId);
    113     }
    114 
    115     private AutofillId(Parcel parcel) {
    116         mViewId = parcel.readInt();
    117         mVirtual = parcel.readInt() == 1;
    118         mVirtualId = parcel.readInt();
    119     }
    120 
    121     public static final Parcelable.Creator<AutofillId> CREATOR =
    122             new Parcelable.Creator<AutofillId>() {
    123         @Override
    124         public AutofillId createFromParcel(Parcel source) {
    125             return new AutofillId(source);
    126         }
    127 
    128         @Override
    129         public AutofillId[] newArray(int size) {
    130             return new AutofillId[size];
    131         }
    132     };
    133 }
    134