99 lines
4.2 KiB
Kotlin
99 lines
4.2 KiB
Kotlin
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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package org.mozilla.fenix.library.bookmarks
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import android.view.LayoutInflater
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import android.view.View
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import android.view.ViewGroup
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import androidx.core.view.isVisible
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import androidx.recyclerview.widget.DiffUtil
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import androidx.recyclerview.widget.RecyclerView
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import mozilla.appservices.places.BookmarkRoot
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import mozilla.components.concept.storage.BookmarkNode
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import mozilla.components.concept.storage.BookmarkNodeType
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import org.mozilla.fenix.R
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import org.mozilla.fenix.library.LibrarySiteItemView
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import org.mozilla.fenix.library.SelectionHolder
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import org.mozilla.fenix.library.bookmarks.viewholders.BookmarkFolderViewHolder
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import org.mozilla.fenix.library.bookmarks.viewholders.BookmarkItemViewHolder
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import org.mozilla.fenix.library.bookmarks.viewholders.BookmarkNodeViewHolder
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import org.mozilla.fenix.library.bookmarks.viewholders.BookmarkSeparatorViewHolder
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class BookmarkAdapter(val emptyView: View, val interactor: BookmarkViewInteractor) :
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RecyclerView.Adapter<BookmarkNodeViewHolder>(), SelectionHolder<BookmarkNode> {
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private var tree: List<BookmarkNode> = listOf()
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private var mode: BookmarkFragmentState.Mode = BookmarkFragmentState.Mode.Normal()
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override val selectedItems: Set<BookmarkNode> get() = mode.selectedItems
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private var isFirstRun = true
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fun updateData(tree: BookmarkNode?, mode: BookmarkFragmentState.Mode) {
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val diffUtil = DiffUtil.calculateDiff(
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BookmarkDiffUtil(
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this.tree,
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tree?.children.orEmpty(),
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this.mode,
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mode
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)
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)
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this.tree = tree?.children.orEmpty()
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isFirstRun = if (isFirstRun) false else {
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emptyView.isVisible = this.tree.isEmpty()
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false
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}
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this.mode = mode
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diffUtil.dispatchUpdatesTo(this)
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}
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private class BookmarkDiffUtil(
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val old: List<BookmarkNode>,
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val new: List<BookmarkNode>,
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val oldMode: BookmarkFragmentState.Mode,
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val newMode: BookmarkFragmentState.Mode
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) : DiffUtil.Callback() {
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override fun areItemsTheSame(oldItemPosition: Int, newItemPosition: Int): Boolean =
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old[oldItemPosition].guid == new[newItemPosition].guid
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override fun areContentsTheSame(oldItemPosition: Int, newItemPosition: Int): Boolean =
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old[oldItemPosition] in oldMode.selectedItems == new[newItemPosition] in newMode.selectedItems &&
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old[oldItemPosition].title == new[newItemPosition].title &&
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old[oldItemPosition].url == new[newItemPosition].url
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override fun getOldListSize(): Int = old.size
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override fun getNewListSize(): Int = new.size
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}
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override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): BookmarkNodeViewHolder {
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val view = LayoutInflater.from(parent.context)
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.inflate(R.layout.bookmark_list_item, parent, false) as LibrarySiteItemView
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return when (viewType) {
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LibrarySiteItemView.ItemType.SITE.ordinal -> BookmarkItemViewHolder(view, interactor, this)
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LibrarySiteItemView.ItemType.FOLDER.ordinal -> BookmarkFolderViewHolder(view, interactor, this)
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LibrarySiteItemView.ItemType.SEPARATOR.ordinal -> BookmarkSeparatorViewHolder(view, interactor)
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else -> throw IllegalStateException("ViewType $viewType does not match to a ViewHolder")
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}
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}
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override fun getItemViewType(position: Int): Int {
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return when (tree[position].type) {
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BookmarkNodeType.ITEM -> LibrarySiteItemView.ItemType.SITE
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BookmarkNodeType.FOLDER -> LibrarySiteItemView.ItemType.FOLDER
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BookmarkNodeType.SEPARATOR -> LibrarySiteItemView.ItemType.SEPARATOR
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else -> throw IllegalStateException("Item $tree[position] does not match to a ViewType")
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}.ordinal
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}
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override fun getItemCount(): Int = tree.size
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override fun onBindViewHolder(holder: BookmarkNodeViewHolder, position: Int) {
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holder.bind(tree[position], mode)
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}
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}
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fun BookmarkNode.inRoots() = enumValues<BookmarkRoot>().any { it.id == guid }
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