111 lines
3.3 KiB
Kotlin
111 lines
3.3 KiB
Kotlin
/*
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* Twidere - Twitter client for Android
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*
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* Copyright (C) 2012-2017 Mariotaku Lee <mariotaku.lee@gmail.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package org.mariotaku.twidere.util.view
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import android.animation.Animator
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import android.view.View
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/**
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* Created by mariotaku on 2017/3/28.
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*/
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class ViewAnimator {
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private val managedViews = HashMap<View, Config>()
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private var currentInAnimator: Animator? = null
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private var currentOutAnimator: Animator? = null
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var currentChild: View? = null
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private set
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fun addView(view: View, config: Config.(View) -> Unit) {
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managedViews[view] = Config().apply { config(view) }
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}
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fun showView(view: View?, animate: Boolean) {
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currentInAnimator?.cancel()
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currentOutAnimator?.cancel()
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val oldView = currentChild
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currentOutAnimator = managedViews[oldView]?.outAnimator?.also { animator ->
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animator.addListener(object : SimpleAnimatorListener() {
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override fun onAnimationEnd(animation: Animator) {
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oldView?.visibility = View.GONE
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animator.removeListener(this)
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}
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override fun onAnimationCancel(animation: Animator) {
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animator.removeListener(this)
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}
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})
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if (animate) {
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animator.start()
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} else {
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animator.end()
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}
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}
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currentInAnimator = managedViews[view]?.inAnimator?.also { animator ->
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animator.addListener(object : SimpleAnimatorListener() {
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override fun onAnimationEnd(animation: Animator) {
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animator.removeListener(this)
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}
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override fun onAnimationCancel(animation: Animator) {
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animator.removeListener(this)
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}
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override fun onAnimationStart(animation: Animator) {
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view?.visibility = View.VISIBLE
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}
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})
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if (animate) {
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animator.start()
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} else {
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animator.end()
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}
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}
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currentChild = view
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}
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class Config {
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var inAnimator: Animator? = null
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var outAnimator: Animator? = null
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}
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internal abstract class SimpleAnimatorListener : Animator.AnimatorListener {
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override fun onAnimationRepeat(animation: Animator) {
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}
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override fun onAnimationEnd(animation: Animator) {
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}
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override fun onAnimationCancel(animation: Animator) {
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}
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override fun onAnimationStart(animation: Animator) {
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}
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}
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}
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