45 lines
2.0 KiB
Kotlin
45 lines
2.0 KiB
Kotlin
/*
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* SPDX-License-Identifier: MPL-2.0
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* Copyright © 2020 Skyline Team and Contributors (https://github.com/skyline-emu/)
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*/
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package emu.skyline.views
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import android.content.Context
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import android.graphics.Rect
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import android.util.AttributeSet
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import android.view.View
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import android.widget.LinearLayout
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import androidx.coordinatorlayout.widget.CoordinatorLayout
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import com.google.android.material.snackbar.Snackbar.SnackbarLayout
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/**
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* Custom linear layout with support for [CoordinatorLayout] to move children, when [com.google.android.material.snackbar.Snackbar] shows up
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*/
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class CustomLinearLayout : LinearLayout, CoordinatorLayout.AttachedBehavior {
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constructor(context : Context) : this(context, null)
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constructor(context : Context, attrs : AttributeSet?) : this(context, attrs, 0)
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constructor(context : Context, attrs : AttributeSet?, defStyleAttr : Int) : super(context, attrs, defStyleAttr)
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override fun getBehavior() : CoordinatorLayout.Behavior<CustomLinearLayout> = MoveUpwardBehavior()
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override fun requestFocus(direction: Int, previouslyFocusedRect: Rect): Boolean = getChildAt(if (direction == View.FOCUS_UP) childCount - 1 else 0 )?.requestFocus() ?: false
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/**
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* Defines behaviour when [com.google.android.material.snackbar.Snackbar] is shown
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* Simply sets an offset to y translation to move children out of the way
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*/
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class MoveUpwardBehavior : CoordinatorLayout.Behavior<CustomLinearLayout>() {
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override fun layoutDependsOn(parent : CoordinatorLayout, child : CustomLinearLayout, dependency : View) : Boolean = dependency is SnackbarLayout
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override fun onDependentViewChanged(parent : CoordinatorLayout, child : CustomLinearLayout, dependency : View) : Boolean {
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child.translationY = (0f).coerceAtMost(dependency.translationY - dependency.height)
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return true
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}
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override fun onDependentViewRemoved(parent : CoordinatorLayout, child : CustomLinearLayout, dependency : View) {
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child.translationY = 0f
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}
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}
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}
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