Twidere-App-Android-Twitter.../twidere/src/main/kotlin/org/mariotaku/twidere/util/view/ViewAnimator.kt

111 lines
3.3 KiB
Kotlin

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