85 lines
3.4 KiB
Kotlin
85 lines
3.4 KiB
Kotlin
/*
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* Twidere - Twitter client for Android
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*
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* Copyright (C) 2012-2015 Mariotaku Lee <mariotaku.lee@gmail.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package org.mariotaku.twidere.fragment
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import android.content.Context
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import androidx.recyclerview.widget.FixedLinearLayoutManager
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import androidx.recyclerview.widget.LinearLayoutManager
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import androidx.recyclerview.widget.RecyclerView
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import org.mariotaku.ktextension.contains
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import org.mariotaku.twidere.adapter.LoadMoreSupportAdapter
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import org.mariotaku.twidere.adapter.decorator.ExtendedDividerItemDecoration
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import org.mariotaku.twidere.adapter.iface.ILoadMoreSupportAdapter
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import org.mariotaku.twidere.adapter.iface.ILoadMoreSupportAdapter.IndicatorPosition
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/**
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* Comment, blah, blah, blah.
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* Created by mariotaku on 15/4/16.
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*/
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abstract class AbsContentListRecyclerViewFragment<A : LoadMoreSupportAdapter<RecyclerView.ViewHolder>>
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: AbsContentRecyclerViewFragment<A, LinearLayoutManager>() {
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override fun onCreateItemDecoration(context: Context, recyclerView: RecyclerView,
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layoutManager: LinearLayoutManager): RecyclerView.ItemDecoration? {
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return ExtendedDividerItemDecoration(context, layoutManager.orientation)
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}
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override fun setLoadMoreIndicatorPosition(@IndicatorPosition position: Long) {
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val decor = itemDecoration
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if (decor is ExtendedDividerItemDecoration) {
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decor.setDecorationStart(if (ILoadMoreSupportAdapter.START in position) 1 else 0)
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decor.setDecorationEndOffset(if (ILoadMoreSupportAdapter.END in position) 1 else 0)
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}
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super.setLoadMoreIndicatorPosition(position)
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}
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override fun scrollToPositionWithOffset(position: Int, offset: Int) {
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layoutManager.scrollToPositionWithOffset(position, offset)
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}
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override fun onCreateLayoutManager(context: Context): LinearLayoutManager {
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return FixedLinearLayoutManager(context, LinearLayoutManager.VERTICAL, false)
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}
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override val reachingEnd: Boolean
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get() {
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val lm = layoutManager
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var itemPos = lm.findLastCompletelyVisibleItemPosition()
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if (itemPos == RecyclerView.NO_POSITION) {
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// No completely visible item, find visible item instead
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itemPos = lm.findLastVisibleItemPosition()
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}
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return itemPos >= lm.itemCount - 1
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}
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override val reachingStart: Boolean
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get() {
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val lm = layoutManager
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var itemPos = lm.findFirstCompletelyVisibleItemPosition()
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if (itemPos == RecyclerView.NO_POSITION) {
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// No completely visible item, find visible item instead
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itemPos = lm.findFirstVisibleItemPosition()
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}
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return itemPos == 0
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}
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}
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