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 com.android.launcher3.accessibility;
  
  import com.android.launcher3.CellLayout;
  import com.android.launcher3.R;
  import com.android.launcher3.folder.FolderPagedView;
  
  /**
   * Implementation of {@link DragAndDropAccessibilityDelegate} to support DnD in a folder.
   */
  public class FolderAccessibilityHelper extends DragAndDropAccessibilityDelegate {
  
      /**
       * 0-index position for the first cell in {@link #mView} in {@link #mParent}.
       */
      private final int mStartPosition;
  
      private final FolderPagedView mParent;
  
      public FolderAccessibilityHelper(CellLayout layout) {
          super(layout);
          mParent = (FolderPagedView) layout.getParent();
  
          int index = mParent.indexOfChild(layout);
          mStartPosition = index * layout.getCountX() * layout.getCountY();
      }
      @Override
      protected int intersectsValidDropTarget(int id) {
          return Math.min(id, mParent.getAllocatedContentSize() - mStartPosition - 1);
      }
  
      @Override
      protected String getLocationDescriptionForIconDrop(int id) {
          return mContext.getString(R.string.move_to_position, id + mStartPosition + 1);
      }
  
      @Override
      protected String getConfirmationForIconDrop(int id) {
          return mContext.getString(R.string.item_moved);
      }
  }
  