144 lines
5.0 KiB
Kotlin
144 lines
5.0 KiB
Kotlin
package com.keylesspalace.tusky.components.search.fragments
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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 androidx.fragment.app.Fragment
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import androidx.lifecycle.LiveData
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import androidx.lifecycle.Observer
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import androidx.lifecycle.ViewModelProviders
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import androidx.paging.PagedList
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import androidx.paging.PagedListAdapter
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import androidx.recyclerview.widget.DividerItemDecoration
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import androidx.recyclerview.widget.LinearLayoutManager
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import androidx.swiperefreshlayout.widget.SwipeRefreshLayout
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import com.google.android.material.snackbar.Snackbar
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import com.keylesspalace.tusky.AccountActivity
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import com.keylesspalace.tusky.BottomSheetActivity
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import com.keylesspalace.tusky.R
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import com.keylesspalace.tusky.ViewTagActivity
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import com.keylesspalace.tusky.components.search.SearchViewModel
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import com.keylesspalace.tusky.di.Injectable
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import com.keylesspalace.tusky.di.ViewModelFactory
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import com.keylesspalace.tusky.interfaces.LinkListener
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import com.keylesspalace.tusky.util.*
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import kotlinx.android.synthetic.main.fragment_search.*
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import javax.inject.Inject
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abstract class SearchFragment<T> : Fragment(),
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LinkListener, Injectable, SwipeRefreshLayout.OnRefreshListener {
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private var snackbarErrorRetry: Snackbar? = null
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@Inject
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lateinit var viewModelFactory: ViewModelFactory
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protected lateinit var viewModel: SearchViewModel
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abstract fun createAdapter(): PagedListAdapter<T, *>
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abstract val networkStateRefresh: LiveData<NetworkState>
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abstract val networkState: LiveData<NetworkState>
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abstract val data: LiveData<PagedList<T>>
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protected lateinit var adapter: PagedListAdapter<T, *>
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override fun onCreate(savedInstanceState: Bundle?) {
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super.onCreate(savedInstanceState)
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viewModel = ViewModelProviders.of(requireActivity(), viewModelFactory)[SearchViewModel::class.java]
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}
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override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
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return inflater.inflate(R.layout.fragment_search, 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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initAdapter()
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setupSwipeRefreshLayout()
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subscribeObservables()
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}
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private fun setupSwipeRefreshLayout() {
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swipeRefreshLayout.setOnRefreshListener(this)
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swipeRefreshLayout.setColorSchemeResources(R.color.tusky_blue)
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swipeRefreshLayout.setProgressBackgroundColorSchemeColor(
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ThemeUtils.getColor(swipeRefreshLayout.context, android.R.attr.colorBackground))
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}
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private fun subscribeObservables() {
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data.observe(viewLifecycleOwner, Observer {
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adapter.submitList(it)
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})
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networkStateRefresh.observe(viewLifecycleOwner, Observer {
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searchProgressBar.visible(it == NetworkState.LOADING)
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if (it.status == Status.FAILED)
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showError(it.msg)
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checkNoData()
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})
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networkState.observe(viewLifecycleOwner, Observer {
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progressBarBottom.visible(it == NetworkState.LOADING)
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if (it.status == Status.FAILED)
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showError(it.msg)
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})
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}
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private fun checkNoData() {
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showNoData(adapter.itemCount == 0)
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}
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private fun initAdapter() {
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searchRecyclerView.addItemDecoration(DividerItemDecoration(searchRecyclerView.context, DividerItemDecoration.VERTICAL))
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searchRecyclerView.layoutManager = LinearLayoutManager(searchRecyclerView.context)
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adapter = createAdapter()
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searchRecyclerView.adapter = adapter
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}
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private fun showNoData(isEmpty: Boolean) {
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if (isEmpty && networkStateRefresh.value == NetworkState.LOADED)
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searchNoResultsText.show()
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else
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searchNoResultsText.hide()
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}
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private fun showError(@Suppress("UNUSED_PARAMETER") msg: String?) {
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if (snackbarErrorRetry?.isShown != true) {
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snackbarErrorRetry = Snackbar.make(layoutRoot, R.string.failed_search, Snackbar.LENGTH_INDEFINITE)
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snackbarErrorRetry?.setAction(R.string.action_retry) {
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snackbarErrorRetry = null
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viewModel.retryAllSearches()
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}
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snackbarErrorRetry?.show()
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}
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}
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override fun onViewAccount(id: String) = startActivity(AccountActivity.getIntent(requireContext(), id))
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override fun onViewTag(tag: String) = startActivity(ViewTagActivity.getIntent(requireContext(), tag))
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override fun onViewUrl(url: String, text: String) {
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bottomSheetActivity?.viewUrl(url, text)
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}
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protected val bottomSheetActivity
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get() = (activity as? BottomSheetActivity)
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override fun onRefresh() {
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// Dismissed here because the RecyclerView bottomProgressBar is shown as soon as the retry begins.
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swipeRefreshLayout.post {
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swipeRefreshLayout.isRefreshing = false
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}
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viewModel.retryAllSearches()
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}
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}
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