chinwag-android/app/src/main/java/com/keylesspalace/tusky/fragment/AccountMediaFragment.kt
Ivan Kupalov a5cffe0fea Add Dagger (#554)
* Add Dagger DI

* Preemptively fix tests

* Add missing licenses

* DI fixes

* ci fixes
2018-03-27 19:47:00 +02:00

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Kotlin

/* Copyright 2017 Andrew Dawson
*
* This file is a part of Tusky.
*
* This program 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.
*
* Tusky 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 Tusky; if not,
* see <http://www.gnu.org/licenses>. */
package com.keylesspalace.tusky.fragment
import android.content.Intent
import android.graphics.Color
import android.os.Bundle
import android.support.v4.app.ActivityOptionsCompat
import android.support.v4.content.ContextCompat
import android.support.v4.view.ViewCompat
import android.support.v4.widget.SwipeRefreshLayout
import android.support.v7.widget.GridLayoutManager
import android.support.v7.widget.RecyclerView
import android.util.Log
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.ImageView
import com.keylesspalace.tusky.R
import com.keylesspalace.tusky.ViewMediaActivity
import com.keylesspalace.tusky.ViewVideoActivity
import com.keylesspalace.tusky.di.Injectable
import com.keylesspalace.tusky.entity.Attachment
import com.keylesspalace.tusky.entity.Status
import com.keylesspalace.tusky.network.MastodonApi
import com.keylesspalace.tusky.util.ThemeUtils
import com.keylesspalace.tusky.view.SquareImageView
import com.squareup.picasso.Picasso
import retrofit2.Call
import retrofit2.Callback
import retrofit2.Response
import java.util.*
import javax.inject.Inject
/**
* Created by charlag on 26/10/2017.
*
* Fragment with multiple columns of media previews for the specified account.
*/
class AccountMediaFragment : BaseFragment(), Injectable {
companion object {
@JvmStatic
fun newInstance(accountId: String): AccountMediaFragment {
val fragment = AccountMediaFragment()
val args = Bundle()
args.putString(ACCOUNT_ID_ARG, accountId)
fragment.arguments = args
return fragment
}
private const val ACCOUNT_ID_ARG = "account_id"
private const val TAG = "AccountMediaFragment"
}
@Inject
lateinit var api: MastodonApi
private val adapter = MediaGridAdapter()
private var currentCall: Call<List<Status>>? = null
private val statuses = mutableListOf<Status>()
private var fetchingStatus = FetchingStatus.NOT_FETCHING
lateinit private var swipeLayout: SwipeRefreshLayout
private val callback = object : Callback<List<Status>> {
override fun onFailure(call: Call<List<Status>>?, t: Throwable?) {
fetchingStatus = FetchingStatus.NOT_FETCHING
swipeLayout.isRefreshing = false
Log.d(TAG, "Failed to fetch account media", t)
}
override fun onResponse(call: Call<List<Status>>, response: Response<List<Status>>) {
fetchingStatus = FetchingStatus.NOT_FETCHING
swipeLayout.isRefreshing = false
val body = response.body()
body?.let { fetched ->
statuses.addAll(0, fetched)
// flatMap requires iterable but I don't want to box each array into list
val result = mutableListOf<Attachment>()
for (status in fetched) {
result.addAll(status.attachments)
}
adapter.addTop(result)
}
}
}
private val bottomCallback = object : Callback<List<Status>> {
override fun onFailure(call: Call<List<Status>>?, t: Throwable?) {
fetchingStatus = FetchingStatus.NOT_FETCHING
Log.d(TAG, "Failed to fetch account media", t)
}
override fun onResponse(call: Call<List<Status>>, response: Response<List<Status>>) {
fetchingStatus = FetchingStatus.NOT_FETCHING
val body = response.body()
body?.let { fetched ->
Log.d(TAG, "fetched ${fetched.size} statuses")
if (fetched.isNotEmpty()) Log.d(TAG, "first: ${fetched.first().id}, last: ${fetched.last().id}")
statuses.addAll(fetched)
Log.d(TAG, "now there are ${statuses.size} statuses")
// flatMap requires iterable but I don't want to box each array into list
val result = mutableListOf<Attachment>()
for (status in fetched) {
result.addAll(status.attachments)
}
adapter.addBottom(result)
}
}
}
override fun onActivityCreated(savedInstanceState: Bundle?) {
super.onActivityCreated(savedInstanceState)
}
override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?,
savedInstanceState: Bundle?): View? {
val view = inflater.inflate(R.layout.fragment_timeline, container, false)
val recyclerView = view.findViewById<RecyclerView>(R.id.recycler_view)
val columnCount = context?.resources?.getInteger(R.integer.profile_media_column_count) ?: 2
val layoutManager = GridLayoutManager(context, columnCount)
val bgRes = ThemeUtils.getColorId(context, R.attr.window_background)
adapter.baseItemColor = ContextCompat.getColor(recyclerView.context, bgRes)
recyclerView.layoutManager = layoutManager
recyclerView.adapter = adapter
val accountId = arguments?.getString(ACCOUNT_ID_ARG)
swipeLayout = view.findViewById(R.id.swipe_refresh_layout)
swipeLayout.setOnRefreshListener {
if (fetchingStatus != FetchingStatus.NOT_FETCHING) return@setOnRefreshListener
currentCall = if (statuses.isEmpty()) {
fetchingStatus = FetchingStatus.INITIAL_FETCHING
api.accountStatuses(accountId, null, null, null, true)
} else {
fetchingStatus = FetchingStatus.REFRESHING
api.accountStatuses(accountId, null, statuses[0].id, null, true)
}
currentCall?.enqueue(callback)
}
swipeLayout.setColorSchemeResources(R.color.primary)
swipeLayout.setProgressBackgroundColorSchemeColor(ThemeUtils.getColor(context, android.R.attr.colorBackground))
recyclerView.addOnScrollListener(object : RecyclerView.OnScrollListener() {
override fun onScrolled(recyclerView: RecyclerView?, dx: Int, dy: Int) {
if (dy > 0) {
val itemCount = layoutManager.itemCount
val lastItem = layoutManager.findLastCompletelyVisibleItemPosition()
if (itemCount <= lastItem + 3 && fetchingStatus == FetchingStatus.NOT_FETCHING) {
statuses.lastOrNull()?.let { last ->
Log.d(TAG, "Requesting statuses with max_id: ${last.id}, (bottom)")
fetchingStatus = FetchingStatus.FETCHING_BOTTOM
currentCall = api.accountStatuses(accountId, last.id, null, null, true)
currentCall?.enqueue(bottomCallback)
}
}
}
}
})
return view
}
// That's sort of an optimization to only load media once user has opened the tab
override fun setUserVisibleHint(isVisibleToUser: Boolean) {
super.setUserVisibleHint(isVisibleToUser)
if (!isVisibleToUser) return
val accountId = arguments?.getString(ACCOUNT_ID_ARG)
if (fetchingStatus == FetchingStatus.NOT_FETCHING && statuses.isEmpty()) {
fetchingStatus = FetchingStatus.INITIAL_FETCHING
currentCall = api.accountStatuses(accountId, null, null, null, true)
currentCall?.enqueue(callback)
}
}
private fun viewMedia(items: List<Attachment>, currentIndex: Int, view: View?) {
val urls = items.map { it.url }.toTypedArray()
val type = items[currentIndex].type
when (type) {
Attachment.Type.IMAGE -> {
val intent = Intent(context, ViewMediaActivity::class.java)
intent.putExtra("urls", urls)
intent.putExtra("urlIndex", currentIndex)
if (view != null && activity != null) {
val url = urls[currentIndex]
ViewCompat.setTransitionName(view, url)
val options = ActivityOptionsCompat.makeSceneTransitionAnimation(activity!!, view, url)
startActivity(intent, options.toBundle())
} else {
startActivity(intent)
}
}
Attachment.Type.GIFV, Attachment.Type.VIDEO -> {
val intent = Intent(context, ViewVideoActivity::class.java)
intent.putExtra("url", urls[currentIndex])
startActivity(intent)
}
Attachment.Type.UNKNOWN -> {
}/* Intentionally do nothing. This case is here is to handle when new attachment
* types are added to the API before code is added here to handle them. So, the
* best fallback is to just show the preview and ignore requests to view them. */
}
}
private enum class FetchingStatus {
NOT_FETCHING, INITIAL_FETCHING, FETCHING_BOTTOM, REFRESHING
}
inner class MediaGridAdapter
: RecyclerView.Adapter<MediaGridAdapter.MediaViewHolder>() {
var baseItemColor = Color.BLACK
private val items = mutableListOf<Attachment>()
private val itemBgBaseHSV = FloatArray(3)
private val random = Random()
fun addTop(newItems: List<Attachment>) {
items.addAll(0, newItems)
notifyItemRangeInserted(0, newItems.size)
}
fun addBottom(newItems: List<Attachment>) {
if (newItems.isEmpty()) return
val oldLen = items.size
items.addAll(newItems)
notifyItemRangeInserted(oldLen, newItems.size)
}
override fun onAttachedToRecyclerView(recyclerView: RecyclerView) {
val hsv = FloatArray(3)
Color.colorToHSV(baseItemColor, hsv)
super.onAttachedToRecyclerView(recyclerView)
}
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): MediaViewHolder {
val view = SquareImageView(parent.context)
view.scaleType = ImageView.ScaleType.CENTER_CROP
return MediaViewHolder(view)
}
override fun getItemCount(): Int = items.size
override fun onBindViewHolder(holder: MediaViewHolder, position: Int) {
itemBgBaseHSV[2] = random.nextFloat() * (1f - 0.3f) + 0.3f
holder.imageView.setBackgroundColor(Color.HSVToColor(itemBgBaseHSV))
val item = items[position]
Picasso.with(holder.imageView.context)
.load(item.previewUrl)
.into(holder.imageView)
}
inner class MediaViewHolder(val imageView: ImageView)
: RecyclerView.ViewHolder(imageView),
View.OnClickListener {
init {
itemView.setOnClickListener(this)
}
// saving some allocations
override fun onClick(v: View?) {
viewMedia(items, adapterPosition, imageView)
}
}
}
}