68782fadac
Create a dedicated playback bar layout. This replaces the old janky observer system with something that handles state better and is just more elegant.
135 lines
4.9 KiB
Kotlin
135 lines
4.9 KiB
Kotlin
/*
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* Copyright (c) 2021 Auxio Project
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* MainFragment.kt is part of Auxio.
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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 <https://www.gnu.org/licenses/>.
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*/
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package org.oxycblt.auxio
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import android.Manifest
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import android.os.Bundle
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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.Button
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import androidx.activity.result.contract.ActivityResultContracts
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import androidx.core.content.res.ResourcesCompat
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import androidx.fragment.app.Fragment
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import androidx.fragment.app.activityViewModels
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import com.google.android.material.snackbar.Snackbar
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import org.oxycblt.auxio.databinding.FragmentMainBinding
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import org.oxycblt.auxio.music.MusicStore
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import org.oxycblt.auxio.music.MusicViewModel
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import org.oxycblt.auxio.playback.PlaybackViewModel
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import org.oxycblt.auxio.util.logD
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/**
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* A wrapper around the home fragment that shows the playback fragment and controls
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* the more high-level navigation features.
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*/
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class MainFragment : Fragment() {
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private val playbackModel: PlaybackViewModel by activityViewModels()
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private val musicModel: MusicViewModel by activityViewModels()
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override fun onCreateView(
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inflater: LayoutInflater,
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container: ViewGroup?,
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savedInstanceState: Bundle?
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): View {
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val binding = FragmentMainBinding.inflate(inflater)
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// Build the permission launcher here as you can only do it in onCreateView/onCreate
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val permLauncher = registerForActivityResult(
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ActivityResultContracts.RequestPermission()
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) {
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musicModel.reloadMusic(requireContext())
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}
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// --- UI SETUP ---
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binding.lifecycleOwner = viewLifecycleOwner
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// --- VIEWMODEL SETUP ---
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if (playbackModel.song.value != null) {
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binding.mainBarLayout.showBar()
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} else {
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binding.mainBarLayout.hideBar()
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}
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playbackModel.song.observe(viewLifecycleOwner) { song ->
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if (song != null) {
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binding.mainBarLayout.showBar()
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} else {
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binding.mainBarLayout.hideBar()
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}
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}
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// Initialize music loading. Unlike MainFragment, we can not only do this here on startup
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// but also show a SnackBar in a reasonable place in this fragment.
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musicModel.loadMusic(requireContext())
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// Handle the music loader response.
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musicModel.loaderResponse.observe(viewLifecycleOwner) { response ->
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// Handle the loader response.
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when (response) {
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// OK, start restoring playback now
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is MusicStore.Response.Ok -> playbackModel.setupPlayback(requireContext())
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// Error, show the error to the user
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is MusicStore.Response.Err -> {
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logD("Received Error")
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val errorRes = when (response.kind) {
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MusicStore.ErrorKind.NO_MUSIC -> R.string.err_no_music
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MusicStore.ErrorKind.NO_PERMS -> R.string.err_no_perms
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MusicStore.ErrorKind.FAILED -> R.string.err_load_failed
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}
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val snackbar = Snackbar.make(
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binding.root, getString(errorRes), Snackbar.LENGTH_INDEFINITE
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)
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snackbar.view.apply {
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// Change the font family to our semibold color
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findViewById<Button>(
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com.google.android.material.R.id.snackbar_action
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).typeface = ResourcesCompat.getFont(requireContext(), R.font.inter_semibold)
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}
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when (response.kind) {
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MusicStore.ErrorKind.FAILED, MusicStore.ErrorKind.NO_MUSIC -> {
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snackbar.setAction(R.string.lbl_retry) {
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musicModel.reloadMusic(requireContext())
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}
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}
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MusicStore.ErrorKind.NO_PERMS -> {
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snackbar.setAction(R.string.lbl_grant) {
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permLauncher.launch(Manifest.permission.READ_EXTERNAL_STORAGE)
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}
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}
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}
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snackbar.show()
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}
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}
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}
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logD("Fragment Created.")
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return binding.root
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}
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}
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