diff options
Diffstat (limited to 'adapter/src/main/kotlin/ca/allanwang/kau/animators/BaseDelayAnimator.kt')
-rw-r--r-- | adapter/src/main/kotlin/ca/allanwang/kau/animators/BaseDelayAnimator.kt | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/adapter/src/main/kotlin/ca/allanwang/kau/animators/BaseDelayAnimator.kt b/adapter/src/main/kotlin/ca/allanwang/kau/animators/BaseDelayAnimator.kt new file mode 100644 index 0000000..c649376 --- /dev/null +++ b/adapter/src/main/kotlin/ca/allanwang/kau/animators/BaseDelayAnimator.kt @@ -0,0 +1,45 @@ +package ca.allanwang.kau.animators + +import android.support.v7.widget.RecyclerView +import android.view.ViewPropertyAnimator + +/** + * Created by Allan Wang on 2017-06-27. + * + * Base for delayed animators + * item delay factor by default can be 0.125f + */ +abstract class BaseDelayAnimator(val itemDelayFactor: Float) : DefaultAnimator() { + + override abstract fun addAnimationPrepare(holder: RecyclerView.ViewHolder) + + override fun addAnimation(holder: RecyclerView.ViewHolder): ViewPropertyAnimator { + return holder.itemView.animate().apply { + startDelay = Math.max(0L, (holder.adapterPosition * addDuration * itemDelayFactor).toLong()) + duration = this@BaseDelayAnimator.addDuration + interpolator = this@BaseDelayAnimator.interpolator + } + } + + + override abstract fun addAnimationCleanup(holder: RecyclerView.ViewHolder) + + override fun getAddDelay(remove: Long, move: Long, change: Long): Long = 0 + + override fun getRemoveDelay(remove: Long, move: Long, change: Long): Long = 0 + + /** + * Partial removal animation + * As of now, all it does it change the alpha + * To have it slide, add onto it in a sub class + */ + override fun removeAnimation(holder: RecyclerView.ViewHolder): ViewPropertyAnimator { + return holder.itemView.animate().apply { + duration = this@BaseDelayAnimator.removeDuration + startDelay = Math.max(0L, (holder.adapterPosition * removeDuration * itemDelayFactor).toLong()) + interpolator = this@BaseDelayAnimator.interpolator + } + } + + override abstract fun removeAnimationCleanup(holder: RecyclerView.ViewHolder) +}
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