content: /*
   * Copyright (C) 2015 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 android.view;
  
  import static com.android.internal.util.Preconditions.checkNotNull;
  
  import android.annotation.NonNull;
  import android.annotation.Nullable;
  import android.annotation.TestApi;
  import android.os.Parcel;
  import android.os.Parcelable;
  
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.List;
  
  /**
   * A group of {@link KeyboardShortcutInfo}.
   */
  public final class KeyboardShortcutGroup implements Parcelable {
      private final CharSequence mLabel;
      private final List<KeyboardShortcutInfo> mItems;
      // The system group looks different UI wise.
      private boolean mSystemGroup;
  
      /**
       * @param label The title to be used for this group, or null if there is none.
       * @param items The set of items to be included.
       */
      public KeyboardShortcutGroup(@Nullable CharSequence label,
              @NonNull List<KeyboardShortcutInfo> items) {
          mLabel = label;
          mItems = new ArrayList<>(checkNotNull(items));
      }
  
      /**
       * @param label The title to be used for this group, or null if there is none.
       */
      public KeyboardShortcutGroup(@Nullable CharSequence label) {
          this(label, Collections.<KeyboardShortcutInfo>emptyList());
      }
  
      /**
       * @param label The title to be used for this group, or null if there is none.
       * @param items The set of items to be included.
       * @param isSystemGroup Set this to {@code true} if this is s system group.
       * @hide
       */
      @TestApi
      public KeyboardShortcutGroup(@Nullable CharSequence label,
              @NonNull List<KeyboardShortcutInfo> items, boolean isSystemGroup) {
          mLabel = label;
          mItems = new ArrayList<>(checkNotNull(items));
          mSystemGroup = isSystemGroup;
      }
  
      /**
       * @param label The title to be used for this group, or null if there is none.
       * @param isSystemGroup Set this to {@code true} if this is s system group.
       * @hide
       */
      @TestApi
      public KeyboardShortcutGroup(@Nullable CharSequence label, boolean isSystemGroup) {
          this(label, Collections.<KeyboardShortcutInfo>emptyList(), isSystemGroup);
      }
  
      private KeyboardShortcutGroup(Parcel source) {
          mItems = new ArrayList<>();
          mLabel = source.readCharSequence();
          source.readTypedList(mItems, KeyboardShortcutInfo.CREATOR);
          mSystemGroup = source.readInt() == 1;
      }
  
      /**
       * Returns the label to be used to describe this group.
       */
      public CharSequence getLabel() {
          return mLabel;
      }
  
      /**
       * Returns the list of items included in this group.
       */
      public List<KeyboardShortcutInfo> getItems() {
          return mItems;
      }
  
      /** @hide **/
      @TestApi
      public boolean isSystemGroup() {
          return mSystemGroup;
      }
  
      /**
       * Adds an item to the existing list.
       *
       * @param item The item to be added.
       */
      public void addItem(KeyboardShortcutInfo item) {
          mItems.add(item);
      }
  
      @Override
      public int describeContents() {
          return 0;
      }
  
      @Override
      public void writeToParcel(Parcel dest, int flags) {
          dest.writeCharSequence(mLabel);
          dest.writeTypedList(mItems);
          dest.writeInt(mSystemGroup ? 1 : 0);
      }
  
      public static final @android.annotation.NonNull Creator<KeyboardShortcutGroup> CREATOR =
              new Creator<KeyboardShortcutGroup>() {
                  public KeyboardShortcutGroup createFromParcel(Parcel source) {
                      return new KeyboardShortcutGroup(source);
                  }
                  public KeyboardShortcutGroup[] newArray(int size) {
                      return new KeyboardShortcutGroup[size];
                  }
              };
  }
  