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/*
* Copyright © 2019. Daniel Schaal <daniel@schaal.email>
*
* This file is part of ocreader.
*
* ocreader 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.
*
* ocreader 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 Foobar. If not, see <http://www.gnu.org/licenses/>.
*/
package email.schaal.ocreader.view
import android.content.Context
import android.view.LayoutInflater
import android.view.ViewGroup
import androidx.recyclerview.widget.RecyclerView
import email.schaal.ocreader.R
import email.schaal.ocreader.database.model.AllUnreadFolder
import email.schaal.ocreader.database.model.Feed
import email.schaal.ocreader.database.model.Item
import email.schaal.ocreader.database.model.TreeItem
import email.schaal.ocreader.databinding.ListDividerBinding
import email.schaal.ocreader.databinding.ListFolderBinding
import io.realm.Realm
class TreeItemsAdapter(context: Context, private var treeItems: List<TreeItem>?, private val clickListener: TreeItemClickListener?, defaultTopFolders: Array<TreeItem>? = null) : RecyclerView.Adapter<RecyclerView.ViewHolder>() {
private val topFolders: List<TreeItem>
private var selectedTreeItemId = AllUnreadFolder.ID
fun setSelectedTreeItemId(id: Long) {
selectedTreeItemId = id
notifyDataSetChanged()
}
private class DividerTreeItem(private val name: String) : TreeItem {
override fun treeItemId(): Long {
return 0
}
override fun treeItemName(): String {
return name
}
override fun getIcon(): Int {
return 0
}
override fun getCount(realm: Realm): Int {
return 0
}
override fun getFeeds(realm: Realm, onlyUnread: Boolean): List<Feed> {
return emptyList()
}
override fun getItems(realm: Realm, onlyUnread: Boolean): List<Item> {
return emptyList()
}
}
fun updateTreeItems(treeItems: List<TreeItem>?) {
this.treeItems = treeItems
notifyDataSetChanged()
}
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): RecyclerView.ViewHolder {
return if (viewType == R.id.viewtype_item) {
TreeItemViewHolder(ListFolderBinding.inflate(LayoutInflater.from(parent.context), parent, false), clickListener)
} else DividerViewHolder(ListDividerBinding.inflate(LayoutInflater.from(parent.context), parent, false))
}
override fun getItemViewType(position: Int): Int {
val treeItem = getTreeItem(position)
return if (treeItem is DividerTreeItem) R.id.viewtype_divider else R.id.viewtype_item
}
private fun getTreeItem(position: Int): TreeItem? {
return if(position >= topFolders.size) {
treeItems?.get(position - topFolders.size)
} else {
topFolders[position]
}
}
override fun onBindViewHolder(holder: RecyclerView.ViewHolder, position: Int) {
val treeItem = getTreeItem(position) ?: return
when (holder) {
is TreeItemViewHolder -> holder.bind(treeItem, selectedTreeItemId)
is DividerViewHolder -> holder.bind(treeItem)
}
}
override fun getItemCount(): Int {
return topFolders.size + (treeItems?.size ?: 0)
}
interface TreeItemClickListener {
fun onTreeItemClick(treeItem: TreeItem)
}
private class DividerViewHolder internal constructor(private val binding: ListDividerBinding) : RecyclerView.ViewHolder(binding.root) {
fun bind(treeItem: TreeItem) {
binding.textViewDivider.text = treeItem.treeItemName()
}
}
class TreeItemViewHolder internal constructor(private val binding: ListFolderBinding, private val clickListener: TreeItemClickListener?) : RecyclerView.ViewHolder(binding.root) {
fun bind(treeItem: TreeItem?, selectedTreeItemId: Long) {
if (treeItem != null) {
itemView.isSelected = treeItem.treeItemId() == selectedTreeItemId
itemView.setOnClickListener { clickListener?.onTreeItemClick(treeItem) }
binding.imageviewFavicon.setImageResource(treeItem.getIcon())
binding.textViewTitle.text = treeItem.treeItemName()
}
}
}
init {
topFolders = if(defaultTopFolders != null) listOf(*defaultTopFolders, DividerTreeItem(context.getString(R.string.folder))) else emptyList()
setHasStableIds(true)
}
}
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