| /* |
| * Copyright (C) 2016 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.documentsui.dirlist; |
| |
| import android.view.KeyEvent; |
| import android.view.View; |
| |
| /** |
| * A class that handles navigation and focus within the DirectoryFragment. |
| */ |
| interface FocusHandler extends View.OnFocusChangeListener { |
| |
| /** |
| * Handles navigation (setting focus, adjusting selection if needed) arising from incoming key |
| * events. |
| * |
| * @param doc The DocumentHolder receiving the key event. |
| * @param keyCode |
| * @param event |
| * @return Whether the event was handled. |
| */ |
| boolean handleKey(DocumentHolder doc, int keyCode, KeyEvent event); |
| |
| @Override |
| void onFocusChange(View v, boolean hasFocus); |
| |
| /** |
| * Requests focus on the item that last had focus. Scrolls to that item if necessary. |
| */ |
| void restoreLastFocus(); |
| |
| /** |
| * @return The adapter position of the last focused item. |
| */ |
| int getFocusPosition(); |
| |
| } |