101 lines
3.5 KiB
Kotlin
101 lines
3.5 KiB
Kotlin
package org.moire.ultrasonic.fragment
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import android.os.Bundle
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import android.view.View
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import androidx.fragment.app.viewModels
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import androidx.lifecycle.LiveData
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import androidx.navigation.fragment.findNavController
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import androidx.recyclerview.widget.RecyclerView
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import org.moire.ultrasonic.R
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import org.moire.ultrasonic.domain.MusicDirectory
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import org.moire.ultrasonic.util.Constants
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/**
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* Displays a list of Albums from the media library
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* TODO: Check refresh is working
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*/
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class AlbumListFragment : EntryListFragment<MusicDirectory.Entry, AlbumRowAdapter>() {
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/**
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* The ViewModel to use to get the data
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*/
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override val listModel: AlbumListModel by viewModels()
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/**
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* The id of the main layout
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*/
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override val mainLayout: Int = R.layout.generic_list
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/**
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* The id of the refresh view
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*/
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override val refreshListId: Int = R.id.generic_list_refresh
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/**
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* The id of the RecyclerView
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*/
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override val recyclerViewId = R.id.generic_list_recycler
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/**
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* The id of the target in the navigation graph where we should go,
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* after the user has clicked on an item
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*/
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override val itemClickTarget: Int = R.id.trackCollectionFragment
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/**
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* The central function to pass a query to the model and return a LiveData object
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*/
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override fun getLiveData(args: Bundle?): LiveData<List<MusicDirectory.Entry>> {
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if (args == null) throw IllegalArgumentException("Required arguments are missing")
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val refresh = args.getBoolean(Constants.INTENT_EXTRA_NAME_REFRESH)
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val append = args.getBoolean(Constants.INTENT_EXTRA_NAME_APPEND)
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return listModel.getAlbumList(refresh or append, refreshListView!!, args)
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}
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/**
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* Provide the Adapter for the RecyclerView with a lazy delegate
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*/
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override val viewAdapter: AlbumRowAdapter by lazy {
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AlbumRowAdapter(
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liveDataItems.value ?: listOf(),
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{ entry -> onItemClick(entry) },
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{ menuItem, entry -> onContextMenuItemSelected(menuItem, entry) },
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imageLoaderProvider.getImageLoader(),
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onMusicFolderUpdate,
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requireContext()
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)
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}
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val newBundleClone: Bundle
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get() = arguments?.clone() as Bundle
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override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
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super.onViewCreated(view, savedInstanceState)
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// Attach our onScrollListener
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listView = view.findViewById<RecyclerView>(recyclerViewId).apply {
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val scrollListener = object : EndlessScrollListener(viewManager) {
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override fun onLoadMore(page: Int, totalItemsCount: Int, view: RecyclerView?) {
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// Triggered only when new data needs to be appended to the list
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// Add whatever code is needed to append new items to the bottom of the list
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val appendArgs = newBundleClone
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appendArgs.putBoolean(Constants.INTENT_EXTRA_NAME_APPEND, true)
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getLiveData(appendArgs)
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}
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}
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addOnScrollListener(scrollListener)
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}
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}
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override fun onItemClick(item: MusicDirectory.Entry) {
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val bundle = Bundle()
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bundle.putString(Constants.INTENT_EXTRA_NAME_ID, item.id)
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bundle.putBoolean(Constants.INTENT_EXTRA_NAME_IS_ALBUM, item.isDirectory)
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bundle.putString(Constants.INTENT_EXTRA_NAME_NAME, item.title)
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bundle.putString(Constants.INTENT_EXTRA_NAME_PARENT_ID, item.parent)
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findNavController().navigate(itemClickTarget, bundle)
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}
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}
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