Archived
125 lines
4.1 KiB
Kotlin
125 lines
4.1 KiB
Kotlin
package com.denizk0461.studip.fragment
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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.viewModels
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import com.denizk0461.studip.R
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import com.denizk0461.studip.adapter.StudIPEventItemAdapter
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import com.denizk0461.studip.adapter.StudIPEventPageAdapter
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import com.denizk0461.studip.databinding.FragmentEventBinding
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import com.denizk0461.studip.model.StudIPEvent
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import com.denizk0461.studip.sheet.ScheduleUpdateSheet
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import com.denizk0461.studip.viewmodel.EventViewModel
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import com.google.android.material.tabs.TabLayoutMediator
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import java.util.*
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/**
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* User-facing fragment view that displays the user's Stud.IP schedule.
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*/
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class EventFragment : AppFragment() {
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// Nullable view binding reference
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private var _binding: FragmentEventBinding? = null
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/*
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* Non-null reference to the view binding. This property is only valid between onCreateView and
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* onDestroyView.
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*/
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private val binding get() = _binding!!
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// Adapter for the view pager displaying all events
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private lateinit var viewPagerAdapter: StudIPEventPageAdapter
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// View model reference for providing access to the database
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private val viewModel: EventViewModel by viewModels()
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// Used to determine the current day
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private var dayOfWeek: Int = 0
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// Titles for the view pager's tabs
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private val dayStrings = listOf(
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R.string.monday,
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R.string.tuesday,
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R.string.wednesday,
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R.string.thursday,
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R.string.friday,
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)
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// Instantiate the view binding
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override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View {
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_binding = FragmentEventBinding.inflate(inflater, container, false)
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return binding.root
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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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/*
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* Determine the current day.
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* TODO expand to weekend
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*/
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dayOfWeek = when (Calendar.getInstance().get(Calendar.DAY_OF_WEEK)) {
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Calendar.TUESDAY -> 1
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Calendar.WEDNESDAY -> 2
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Calendar.THURSDAY -> 3
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Calendar.FRIDAY -> 4
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else -> 0
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}
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// Set up the view pager's adapter
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viewPagerAdapter = StudIPEventPageAdapter(listOf(), object : StudIPEventItemAdapter.OnClickListener {
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override fun onClick(event: StudIPEvent) {
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// TODO implement functionality or delete
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}
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override fun onLongClick(event: StudIPEvent): Boolean {
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// Open a bottom sheet to edit the event
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openBottomSheet(ScheduleUpdateSheet(event, onUpdate = { eventToUpdate ->
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viewModel.update(eventToUpdate)
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}, onDelete = { eventToDelete ->
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viewModel.delete(eventToDelete)
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}))
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return true
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}
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})
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// Assign the adapter to the view pager
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binding.viewPager.adapter = viewPagerAdapter
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// Create and attach the object mediating the tabs for the view pager
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TabLayoutMediator(binding.dayTabLayout, binding.viewPager) { tab, position ->
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tab.text = getString(dayStrings[position])
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}.attach()
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// Set up LiveData observer to refresh the view on update
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viewModel.allEvents.observe(viewLifecycleOwner) { events ->
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// Update the item list in the view pager's adapter
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viewPagerAdapter.setNewItems(events)
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// Scroll to the current day
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switchToCurrentDayView()
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}
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}
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override fun onResume() {
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super.onResume()
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// Scroll to the current day
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switchToCurrentDayView()
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}
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// Invalidate the view binding
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override fun onDestroyView() {
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super.onDestroyView()
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_binding = null
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}
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/**
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* Scroll to the current day. Current day is determined after the fragment's view has been
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* created.
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*/
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private fun switchToCurrentDayView() {
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binding.viewPager.currentItem = dayOfWeek
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}
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} |