1c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar/* 2c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar * Copyright (C) 2015 The Android Open Source Project 3c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar * 4c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar * Licensed under the Apache License, Version 2.0 (the "License"); 5c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar * you may not use this file except in compliance with the License. 6c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar * You may obtain a copy of the License at 7c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar * 8c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar * http://www.apache.org/licenses/LICENSE-2.0 9c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar * 10c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar * Unless required by applicable law or agreed to in writing, software 11c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar * distributed under the License is distributed on an "AS IS" BASIS, 12c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar * See the License for the specific language governing permissions and 14c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar * limitations under the License. 15c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar */ 16c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar 17c0459105252a3db52bc44ad62ecff4288860180dYigit Boyarpackage android.support.v7.widget.helper; 18c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar 19c0459105252a3db52bc44ad62ecff4288860180dYigit Boyarimport android.graphics.Canvas; 20c0459105252a3db52bc44ad62ecff4288860180dYigit Boyarimport android.support.v7.widget.RecyclerView; 21c0459105252a3db52bc44ad62ecff4288860180dYigit Boyarimport android.view.View; 22c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar 23c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar/** 24c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar * Utility class for {@link ItemTouchHelper} which handles item transformations for different 25c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar * API versions. 26c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar * <p/> 27c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar * This class has methods that map to {@link ItemTouchHelper.Callback}'s drawing methods. Default 28c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar * implementations in {@link ItemTouchHelper.Callback} call these methods with 29c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar * {@link RecyclerView.ViewHolder#itemView} and {@link ItemTouchUIUtil} makes necessary changes 30c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar * on the View depending on the API level. You can access the instance of {@link ItemTouchUIUtil} 31c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar * via {@link ItemTouchHelper.Callback#getDefaultUIUtil()} and call its methods with the children 32c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar * of ViewHolder that you want to apply default effects. 33c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar * 34c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar * @see ItemTouchHelper.Callback#getDefaultUIUtil() 35c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar */ 36c0459105252a3db52bc44ad62ecff4288860180dYigit Boyarpublic interface ItemTouchUIUtil { 37c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar 38c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar /** 39c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar * The default implementation for {@link ItemTouchHelper.Callback#onChildDraw(Canvas, 40c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar * RecyclerView, RecyclerView.ViewHolder, float, float, int, boolean)} 41c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar */ 42c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar void onDraw(Canvas c, RecyclerView recyclerView, View view, 43c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar float dX, float dY, int actionState, boolean isCurrentlyActive); 44c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar 45c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar /** 46c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar * The default implementation for {@link ItemTouchHelper.Callback#onChildDrawOver(Canvas, 47c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar * RecyclerView, RecyclerView.ViewHolder, float, float, int, boolean)} 48c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar */ 49c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar void onDrawOver(Canvas c, RecyclerView recyclerView, View view, 50c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar float dX, float dY, int actionState, boolean isCurrentlyActive); 51c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar 52c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar /** 53c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar * The default implementation for {@link ItemTouchHelper.Callback#clearView(RecyclerView, 54c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar * RecyclerView.ViewHolder)} 55c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar */ 56c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar void clearView(View view); 57c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar 58c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar /** 59c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar * The default implementation for {@link ItemTouchHelper.Callback#onSelectedChanged( 60c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar * RecyclerView.ViewHolder, int)} 61c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar */ 62c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar void onSelected(View view); 63c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar} 64c0459105252a3db52bc44ad62ecff4288860180dYigit Boyar 65