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iceraven-browser/app/src/main/java/org/mozilla/fenix/home/sessioncontrol/viewholders/topsites/TopSitesPagerAdapter.kt

41 lines
1.7 KiB
Kotlin

/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
package org.mozilla.fenix.home.sessioncontrol.viewholders.topsites
import android.view.LayoutInflater
import android.view.ViewGroup
import androidx.recyclerview.widget.DiffUtil
import androidx.recyclerview.widget.ListAdapter
import kotlinx.android.synthetic.main.component_top_sites.view.*
import mozilla.components.feature.top.sites.TopSite
import org.mozilla.fenix.home.sessioncontrol.TopSiteInteractor
import org.mozilla.fenix.home.sessioncontrol.viewholders.TopSiteViewHolder
class TopSitesPagerAdapter(
private val interactor: TopSiteInteractor
) : ListAdapter<List<TopSite>, TopSiteViewHolder>(DiffCallback) {
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): TopSiteViewHolder {
val view = LayoutInflater.from(parent.context)
.inflate(TopSiteViewHolder.LAYOUT_ID, parent, false)
return TopSiteViewHolder(view, interactor)
}
override fun onBindViewHolder(holder: TopSiteViewHolder, position: Int) {
val adapter = holder.itemView.top_sites_list.adapter as TopSitesAdapter
adapter.submitList(getItem(position))
}
private object DiffCallback : DiffUtil.ItemCallback<List<TopSite>>() {
override fun areItemsTheSame(oldItem: List<TopSite>, newItem: List<TopSite>): Boolean {
return oldItem.size == newItem.size
}
override fun areContentsTheSame(oldItem: List<TopSite>, newItem: List<TopSite>): Boolean {
return newItem.zip(oldItem).all { (new, old) -> new == old }
}
}
}