326 lines
13 KiB
Kotlin
326 lines
13 KiB
Kotlin
/* Copyright 2017 Andrew Dawson
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*
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* This file is a part of Tusky.
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*
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* This program is free software; you can redistribute it and/or modify it under the terms of the
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* GNU General Public License as published by the Free Software Foundation; either version 3 of the
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* License, or (at your option) any later version.
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*
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* Tusky is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even
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* the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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* 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 along with Tusky; if not,
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* see <http://www.gnu.org/licenses>. */
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package com.keylesspalace.tusky.fragment
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import android.graphics.Color
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import android.os.Bundle
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import android.util.Log
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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 android.widget.ImageView
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import androidx.core.app.ActivityOptionsCompat
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import androidx.core.content.ContextCompat
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import androidx.core.view.ViewCompat
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import androidx.recyclerview.widget.GridLayoutManager
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import androidx.recyclerview.widget.RecyclerView
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import com.bumptech.glide.Glide
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import com.bumptech.glide.load.resource.bitmap.DownsampleStrategy
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import com.keylesspalace.tusky.R
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import com.keylesspalace.tusky.ViewMediaActivity
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import com.keylesspalace.tusky.di.Injectable
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import com.keylesspalace.tusky.entity.Attachment
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import com.keylesspalace.tusky.entity.Status
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import com.keylesspalace.tusky.network.MastodonApi
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import com.keylesspalace.tusky.util.ThemeUtils
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import com.keylesspalace.tusky.util.hide
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import com.keylesspalace.tusky.util.show
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import com.keylesspalace.tusky.view.SquareImageView
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import com.keylesspalace.tusky.viewdata.AttachmentViewData
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import kotlinx.android.synthetic.main.fragment_timeline.*
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import retrofit2.Call
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import retrofit2.Callback
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import retrofit2.Response
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import java.io.IOException
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import java.util.*
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import javax.inject.Inject
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/**
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* Created by charlag on 26/10/2017.
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*
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* Fragment with multiple columns of media previews for the specified account.
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*/
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class AccountMediaFragment : BaseFragment(), Injectable {
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companion object {
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@JvmStatic
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fun newInstance(accountId: String): AccountMediaFragment {
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val fragment = AccountMediaFragment()
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val args = Bundle()
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args.putString(ACCOUNT_ID_ARG, accountId)
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fragment.arguments = args
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return fragment
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}
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private const val ACCOUNT_ID_ARG = "account_id"
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private const val TAG = "AccountMediaFragment"
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}
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@Inject
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lateinit var api: MastodonApi
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private val adapter = MediaGridAdapter()
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private var currentCall: Call<List<Status>>? = null
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private val statuses = mutableListOf<Status>()
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private var fetchingStatus = FetchingStatus.NOT_FETCHING
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private var isVisibleToUser: Boolean = false
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private val callback = object : Callback<List<Status>> {
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override fun onFailure(call: Call<List<Status>>?, t: Throwable?) {
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fetchingStatus = FetchingStatus.NOT_FETCHING
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if (isAdded) {
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swipeRefreshLayout.isRefreshing = false
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progressBar.visibility = View.GONE
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statusView.show()
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if (t is IOException) {
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statusView.setup(R.drawable.elephant_offline, R.string.error_network) {
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doInitialLoadingIfNeeded()
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}
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} else {
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statusView.setup(R.drawable.elephant_error, R.string.error_generic) {
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doInitialLoadingIfNeeded()
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}
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}
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}
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Log.d(TAG, "Failed to fetch account media", t)
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}
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override fun onResponse(call: Call<List<Status>>, response: Response<List<Status>>) {
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fetchingStatus = FetchingStatus.NOT_FETCHING
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if (isAdded) {
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swipeRefreshLayout.isRefreshing = false
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progressBar.visibility = View.GONE
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val body = response.body()
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body?.let { fetched ->
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statuses.addAll(0, fetched)
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// flatMap requires iterable but I don't want to box each array into list
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val result = mutableListOf<AttachmentViewData>()
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for (status in fetched) {
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result.addAll(AttachmentViewData.list(status))
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}
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adapter.addTop(result)
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if (statuses.isEmpty()) {
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statusView.show()
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statusView.setup(R.drawable.elephant_friend_empty, R.string.message_empty,
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null)
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}
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}
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}
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}
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}
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private val bottomCallback = object : Callback<List<Status>> {
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override fun onFailure(call: Call<List<Status>>?, t: Throwable?) {
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fetchingStatus = FetchingStatus.NOT_FETCHING
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Log.d(TAG, "Failed to fetch account media", t)
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}
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override fun onResponse(call: Call<List<Status>>, response: Response<List<Status>>) {
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fetchingStatus = FetchingStatus.NOT_FETCHING
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val body = response.body()
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body?.let { fetched ->
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Log.d(TAG, "fetched ${fetched.size} statuses")
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if (fetched.isNotEmpty()) Log.d(TAG, "first: ${fetched.first().id}, last: ${fetched.last().id}")
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statuses.addAll(fetched)
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Log.d(TAG, "now there are ${statuses.size} statuses")
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// flatMap requires iterable but I don't want to box each array into list
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val result = mutableListOf<AttachmentViewData>()
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for (status in fetched) {
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result.addAll(AttachmentViewData.list(status))
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}
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adapter.addBottom(result)
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}
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}
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}
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override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?,
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savedInstanceState: Bundle?): View? {
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return inflater.inflate(R.layout.fragment_timeline, container, false)
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}
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override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
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super.onViewCreated(view, savedInstanceState)
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val columnCount = view.context.resources.getInteger(R.integer.profile_media_column_count)
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val layoutManager = GridLayoutManager(view.context, columnCount)
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val bgRes = ThemeUtils.getColorId(view.context, R.attr.window_background)
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adapter.baseItemColor = ContextCompat.getColor(recyclerView.context, bgRes)
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recyclerView.layoutManager = layoutManager
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recyclerView.adapter = adapter
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val accountId = arguments?.getString(ACCOUNT_ID_ARG)
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swipeRefreshLayout.setOnRefreshListener {
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statusView.hide()
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if (fetchingStatus != FetchingStatus.NOT_FETCHING) return@setOnRefreshListener
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currentCall = if (statuses.isEmpty()) {
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fetchingStatus = FetchingStatus.INITIAL_FETCHING
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api.accountStatuses(accountId, null, null, null, null, true, null)
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} else {
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fetchingStatus = FetchingStatus.REFRESHING
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api.accountStatuses(accountId, null, statuses[0].id, null, null, true, null)
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}
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currentCall?.enqueue(callback)
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}
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swipeRefreshLayout.setColorSchemeResources(R.color.tusky_blue)
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swipeRefreshLayout.setProgressBackgroundColorSchemeColor(ThemeUtils.getColor(view.context, android.R.attr.colorBackground))
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statusView.visibility = View.GONE
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recyclerView.addOnScrollListener(object : RecyclerView.OnScrollListener() {
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override fun onScrolled(recycler_view: RecyclerView, dx: Int, dy: Int) {
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if (dy > 0) {
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val itemCount = layoutManager.itemCount
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val lastItem = layoutManager.findLastCompletelyVisibleItemPosition()
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if (itemCount <= lastItem + 3 && fetchingStatus == FetchingStatus.NOT_FETCHING) {
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statuses.lastOrNull()?.let { last ->
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Log.d(TAG, "Requesting statuses with max_id: ${last.id}, (bottom)")
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fetchingStatus = FetchingStatus.FETCHING_BOTTOM
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currentCall = api.accountStatuses(accountId, last.id, null, null, null, true, null)
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currentCall?.enqueue(bottomCallback)
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}
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}
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}
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}
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})
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if (isVisibleToUser) doInitialLoadingIfNeeded()
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}
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// That's sort of an optimization to only load media once user has opened the tab
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// Attention: can be called before *any* lifecycle method!
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override fun setUserVisibleHint(isVisibleToUser: Boolean) {
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super.setUserVisibleHint(isVisibleToUser)
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this.isVisibleToUser = isVisibleToUser
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if (isVisibleToUser && isAdded) doInitialLoadingIfNeeded()
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}
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private fun doInitialLoadingIfNeeded() {
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if (isAdded) {
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statusView.hide()
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}
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val accountId = arguments?.getString(ACCOUNT_ID_ARG)
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if (fetchingStatus == FetchingStatus.NOT_FETCHING && statuses.isEmpty()) {
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fetchingStatus = FetchingStatus.INITIAL_FETCHING
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currentCall = api.accountStatuses(accountId, null, null, null, null, true, null)
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currentCall?.enqueue(callback)
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}
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}
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private fun viewMedia(items: List<AttachmentViewData>, currentIndex: Int, view: View?) {
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val type = items[currentIndex].attachment.type
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when (type) {
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Attachment.Type.IMAGE,
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Attachment.Type.GIFV,
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Attachment.Type.VIDEO -> {
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val intent = ViewMediaActivity.newIntent(context, items, currentIndex)
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if (view != null && activity != null) {
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val url = items[currentIndex].attachment.url
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ViewCompat.setTransitionName(view, url)
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val options = ActivityOptionsCompat.makeSceneTransitionAnimation(activity!!, view, url)
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startActivity(intent, options.toBundle())
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} else {
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startActivity(intent)
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}
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}
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Attachment.Type.UNKNOWN -> {
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}/* Intentionally do nothing. This case is here is to handle when new attachment
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* types are added to the API before code is added here to handle them. So, the
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* best fallback is to just show the preview and ignore requests to view them. */
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}
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}
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private enum class FetchingStatus {
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NOT_FETCHING, INITIAL_FETCHING, FETCHING_BOTTOM, REFRESHING
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}
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inner class MediaGridAdapter :
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RecyclerView.Adapter<MediaGridAdapter.MediaViewHolder>() {
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var baseItemColor = Color.BLACK
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private val items = mutableListOf<AttachmentViewData>()
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private val itemBgBaseHSV = FloatArray(3)
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private val random = Random()
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fun addTop(newItems: List<AttachmentViewData>) {
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items.addAll(0, newItems)
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notifyItemRangeInserted(0, newItems.size)
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}
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fun addBottom(newItems: List<AttachmentViewData>) {
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if (newItems.isEmpty()) return
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val oldLen = items.size
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items.addAll(newItems)
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notifyItemRangeInserted(oldLen, newItems.size)
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}
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override fun onAttachedToRecyclerView(recycler_view: RecyclerView) {
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val hsv = FloatArray(3)
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Color.colorToHSV(baseItemColor, hsv)
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super.onAttachedToRecyclerView(recycler_view)
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}
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override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): MediaViewHolder {
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val view = SquareImageView(parent.context)
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view.scaleType = ImageView.ScaleType.CENTER_CROP
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return MediaViewHolder(view)
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}
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override fun getItemCount(): Int = items.size
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override fun onBindViewHolder(holder: MediaViewHolder, position: Int) {
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itemBgBaseHSV[2] = random.nextFloat() * (1f - 0.3f) + 0.3f
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holder.imageView.setBackgroundColor(Color.HSVToColor(itemBgBaseHSV))
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val item = items[position]
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Glide.with(holder.imageView)
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.load(item.attachment.previewUrl)
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.centerInside()
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.into(holder.imageView)
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}
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inner class MediaViewHolder(val imageView: ImageView)
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: RecyclerView.ViewHolder(imageView),
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View.OnClickListener {
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init {
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itemView.setOnClickListener(this)
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}
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// saving some allocations
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override fun onClick(v: View?) {
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viewMedia(items, adapterPosition, imageView)
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}
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}
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}
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} |