1 /* 2 * Copyright (C) 2024 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package androidx.window.extensions.embedding; 18 19 import android.content.res.Configuration; 20 import android.view.View; 21 22 import androidx.annotation.NonNull; 23 import androidx.window.extensions.embedding.SplitAttributes.SplitType.ExpandContainersSplitType; 24 25 /** Helper functions for {@link SplitAttributes} */ 26 class SplitAttributesHelper { 27 /** 28 * Returns whether the split layout direction is reversed. Right-to-left and bottom-to-top are 29 * considered reversed. 30 */ isReversedLayout( @onNull SplitAttributes splitAttributes, @NonNull Configuration configuration)31 static boolean isReversedLayout( 32 @NonNull SplitAttributes splitAttributes, @NonNull Configuration configuration) { 33 switch (splitAttributes.getLayoutDirection()) { 34 case SplitAttributes.LayoutDirection.LEFT_TO_RIGHT: 35 case SplitAttributes.LayoutDirection.TOP_TO_BOTTOM: 36 return false; 37 case SplitAttributes.LayoutDirection.RIGHT_TO_LEFT: 38 case SplitAttributes.LayoutDirection.BOTTOM_TO_TOP: 39 return true; 40 case SplitAttributes.LayoutDirection.LOCALE: 41 return configuration.getLayoutDirection() == View.LAYOUT_DIRECTION_RTL; 42 default: 43 throw new IllegalArgumentException( 44 "Invalid layout direction:" + splitAttributes.getLayoutDirection()); 45 } 46 } 47 48 /** 49 * Returns whether the {@link SplitAttributes} is an {@link ExpandContainersSplitType} and it 50 * should show a draggable handle that allows the user to drag and restore it into a split. 51 * This state is a result of user dragging the divider to fully expand the secondary container. 52 */ isDraggableExpandType(@onNull SplitAttributes splitAttributes)53 static boolean isDraggableExpandType(@NonNull SplitAttributes splitAttributes) { 54 final DividerAttributes dividerAttributes = splitAttributes.getDividerAttributes(); 55 return splitAttributes.getSplitType() instanceof ExpandContainersSplitType 56 && dividerAttributes != null 57 && dividerAttributes.getDividerType() == DividerAttributes.DIVIDER_TYPE_DRAGGABLE; 58 59 } 60 } 61