android/src/com/android/tools/idea/editors/navigation/model/Locator.java

/*
 * Copyright (C) 2013 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.tools.idea.editors.navigation.model;

import com.android.annotations.NonNull;
import com.android.annotations.Nullable;

public class Locator {
  @NonNull
  private final State state;
  @Nullable
  private final String fragmentClassName;
  @Nullable
  private final String viewId;

  private Locator(@NonNull State state, @Nullable String fragmentClassName, @Nullable String viewId) {
    this.state = state;
    this.fragmentClassName = fragmentClassName;
    this.viewId = viewId;
  }

  public static Locator of(@NonNull State state) {
    return new Locator(state, null, null);
  }

  public static Locator of(@NonNull State state, @Nullable String viewName) {
    return new Locator(state, null, viewName);
  }

  public static Locator of(@NonNull State state, @Nullable String fragmentClassName, @Nullable String viewName) {
    return new Locator(state, fragmentClassName, viewName);
  }

  @NonNull
  public State getState() {
    return state;
  }

  @Nullable
  public String getFragmentClassName() {
    return fragmentClassName;
  }

  @Nullable
  public String getViewId() {
    return viewId;
  }

  @Override
  public boolean equals(Object o) {
    if (this == o) return true;
    if (o == null || getClass() != o.getClass()) return false;

    Locator locator = (Locator)o;

    if (fragmentClassName != null ? !fragmentClassName.equals(locator.fragmentClassName) : locator.fragmentClassName != null) return false;
    if (!state.equals(locator.state)) return false;
    if (viewId != null ? !viewId.equals(locator.viewId) : locator.viewId != null) return false;

    return true;
  }

  @Override
  public int hashCode() {
    int result = state.hashCode();
    result = 31 * result + (fragmentClassName != null ? fragmentClassName.hashCode() : 0);
    result = 31 * result + (viewId != null ? viewId.hashCode() : 0);
    return result;
  }

  @Override
  public String toString() {
    return "Locator{" +
           "state=" + state +
           ", viewName='" + viewId + '\'' +
           '}';
  }
}