162 lines
6.3 KiB
Kotlin
162 lines
6.3 KiB
Kotlin
/*
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* Twidere - Twitter client for Android
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*
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* Copyright (C) 2012-2017 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 android.os.Bundle
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import androidx.loader.app.LoaderManager.LoaderCallbacks
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import androidx.loader.app.hasRunningLoadersSafe
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import androidx.loader.content.Loader
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import androidx.recyclerview.widget.StaggeredGridLayoutManager
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import com.bumptech.glide.RequestManager
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import org.mariotaku.twidere.adapter.StaggeredGridParcelableStatusesAdapter
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import org.mariotaku.twidere.adapter.iface.ILoadMoreSupportAdapter
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import org.mariotaku.twidere.constant.IntentConstants.EXTRA_FROM_USER
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import org.mariotaku.twidere.extension.reachingEnd
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import org.mariotaku.twidere.extension.reachingStart
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import org.mariotaku.twidere.loader.iface.IExtendedLoader
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import org.mariotaku.twidere.loader.statuses.AbsRequestStatusesLoader
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import org.mariotaku.twidere.model.ParcelableStatus
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import org.mariotaku.twidere.model.pagination.SinceMaxPagination
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import org.mariotaku.twidere.util.IntentUtils
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import org.mariotaku.twidere.view.HeaderDrawerLayout.DrawerCallback
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import org.mariotaku.twidere.view.holder.iface.IStatusViewHolder
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/**
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* Created by mariotaku on 14/11/5.
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*/
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abstract class AbsMediaStatusesFragment : AbsContentRecyclerViewFragment<StaggeredGridParcelableStatusesAdapter,
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StaggeredGridLayoutManager>(), LoaderCallbacks<List<ParcelableStatus>?>, DrawerCallback,
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IStatusViewHolder.StatusClickListener {
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final override var refreshing: Boolean
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get() {
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if (context == null || isDetached) return false
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return loaderManager.hasRunningLoadersSafe()
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}
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set(value) {
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super.refreshing = value
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}
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final override val reachingEnd: Boolean
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get() = layoutManager.reachingEnd
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final override val reachingStart: Boolean
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get() = layoutManager.reachingStart
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protected open val loaderId: Int
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get() = tabId.toInt().coerceIn(0..Int.MAX_VALUE)
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override fun onActivityCreated(savedInstanceState: Bundle?) {
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super.onActivityCreated(savedInstanceState)
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adapter.statusClickListener = this
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val loaderArgs = Bundle(arguments)
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loaderArgs.putBoolean(EXTRA_FROM_USER, true)
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loaderManager.initLoader(loaderId, loaderArgs, this)
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showProgress()
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}
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final override fun onCreateLayoutManager(context: Context): StaggeredGridLayoutManager {
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return StaggeredGridLayoutManager(2, StaggeredGridLayoutManager.VERTICAL)
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}
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final override fun scrollToPositionWithOffset(position: Int, offset: Int) {
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layoutManager.scrollToPositionWithOffset(position, offset)
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}
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final override fun onCreateAdapter(context: Context, requestManager: RequestManager): StaggeredGridParcelableStatusesAdapter {
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return StaggeredGridParcelableStatusesAdapter(context, requestManager)
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}
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override fun onCreateLoader(id: Int, args: Bundle?): Loader<List<ParcelableStatus>?> {
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val fromUser = args?.getBoolean(EXTRA_FROM_USER)
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args?.remove(EXTRA_FROM_USER)
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return onCreateStatusesLoader(requireActivity(), args!!, fromUser!!)
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}
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final override fun onLoadFinished(loader: Loader<List<ParcelableStatus>?>, data: List<ParcelableStatus>?) {
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val changed = adapter.setData(data)
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if ((loader as IExtendedLoader).fromUser) {
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adapter.loadMoreSupportedPosition = if (hasMoreData(loader, data, changed)) {
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ILoadMoreSupportAdapter.END
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} else {
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ILoadMoreSupportAdapter.NONE
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}
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}
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loader.fromUser = false
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refreshing = false
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showContent()
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setLoadMoreIndicatorPosition(ILoadMoreSupportAdapter.NONE)
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}
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final override fun onLoaderReset(loader: Loader<List<ParcelableStatus>?>) {
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adapter.setData(null)
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}
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final override fun onLoadMoreContents(position: Long) {
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// Only supports load from end
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if (ILoadMoreSupportAdapter.END != position) return
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super.onLoadMoreContents(position)
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// Get last raw status
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val startIdx = adapter.statusStartIndex
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if (startIdx < 0) return
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val statusCount = adapter.getStatusCount(true)
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if (statusCount <= 0) return
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val status = adapter.getStatus(startIdx + statusCount - 1, true)
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val maxId = status.id
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getStatuses(maxId, null)
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}
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final override fun onStatusClick(holder: IStatusViewHolder, position: Int) {
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val status = adapter.getStatus(position)
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context?.let {
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IntentUtils.openStatus(it, status, null)
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}
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}
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final override fun onQuotedStatusClick(holder: IStatusViewHolder, position: Int) {
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val status = adapter.getStatus(position)
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context?.let {
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IntentUtils.openStatus(it, status.account_key, status.quoted_id)
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}
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}
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protected open fun hasMoreData(loader: Loader<List<ParcelableStatus>?>,
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data: List<ParcelableStatus>?, changed: Boolean): Boolean {
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if (loader !is AbsRequestStatusesLoader) return false
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val pagination = loader.pagination as? SinceMaxPagination
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val maxId = pagination?.maxId?.takeIf(String::isNotEmpty)
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val sinceId = pagination?.sinceId?.takeIf(String::isNotEmpty)
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if (sinceId == null && maxId != null) {
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if (data != null && data.isNotEmpty()) {
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return changed
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}
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}
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return true
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}
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protected abstract fun onCreateStatusesLoader(context: Context, args: Bundle,
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fromUser: Boolean): Loader<List<ParcelableStatus>?>
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protected abstract fun getStatuses(maxId: String?, sinceId: String?): Int
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}
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