Implemented functionality for adding a new event manually; added floating action buttons for adding an event and refreshing the canteen offers

app/src/main/java/com/denizk0461/studip/data/StudIPParser.kt

@@ -25,9 +25,6 @@ class StudIPParser(application: Application) {
      */
     @Throws(IOException::class)
     fun parse(html: String): Int {
-        // Primary key value to uniquely identify entries in the database
-        var id = 0
-
         // Counts how many elements could not be successfully fetched
         var elementsNotFetched = 0
 
@@ -92,7 +89,6 @@ class StudIPParser(application: Application) {
 
                 // Construct the newly scraped Stud.IP event
                 val event = StudIPEvent(
-                    eventId = id,
                     title = parsedTitle,
                     lecturer = parsedLecturers,
                     room = entryInfo.getOrQuestionMark(1),
@@ -104,9 +100,6 @@ class StudIPParser(application: Application) {
 
                 // Add the new element to the temporary list
                 newEvents.add(event)
-
-                // Raise the primary key value by 1 to avoid not fulfilling the unique constraint
-                id += 1
             }
         }
 

app/src/main/java/com/denizk0461/studip/db/AppDatabase.kt

@@ -17,7 +17,7 @@ import com.denizk0461.studip.model.*
         OfferCategory::class,
         OfferItem::class,
     ],
-    version = 18,
+    version = 19,
 )
 abstract class AppDatabase : RoomDatabase() {
 

app/src/main/java/com/denizk0461/studip/db/AppRepository.kt

@@ -85,6 +85,15 @@ class AppRepository(app: Application) {
      */
     fun getOffersByDay(day: Int): LiveData<List<CanteenOffer>> = dao.getOffersByDay(day)
 
+    /**
+     * Inserts a new schedule element.
+     *
+     * @param event the event to save
+     */
+    fun insert(event: StudIPEvent) {
+        dao.insert(event)
+    }
+
     /**
      * Updates a schedule element.
      *

app/src/main/java/com/denizk0461/studip/fragment/CanteenFragment.kt

@@ -127,6 +127,15 @@ class CanteenFragment : AppFragment() {
             }
         }
 
+        // Set up floating action button for refreshing the canteen offers
+        binding.fabRefreshOffers.setOnClickListener {
+            // Display to the user that a refresh is in progress
+            binding.swipeRefreshLayout.isRefreshing = true
+
+            // Refresh the offers
+            refresh()
+        }
+
         // Set up the view pager's adapter
         viewPagerAdapter = CanteenOfferPageAdapter(
             childFragmentManager,

app/src/main/java/com/denizk0461/studip/fragment/EventFragment.kt

@@ -8,6 +8,7 @@ import androidx.fragment.app.viewModels
 import com.denizk0461.studip.R
 import com.denizk0461.studip.adapter.StudIPEventPageAdapter
 import com.denizk0461.studip.databinding.FragmentEventBinding
+import com.denizk0461.studip.sheet.ScheduleUpdateSheet
 import com.denizk0461.studip.viewmodel.EventViewModel
 import com.google.android.material.tabs.TabLayoutMediator
 import java.util.*
@@ -74,6 +75,16 @@ class EventFragment : AppFragment() {
         TabLayoutMediator(binding.dayTabLayout, binding.viewPager) { tab, position ->
             tab.text = weekdays[position]
         }.attach()
+
+        binding.fabAddEvent.setOnClickListener {
+            openBottomSheet(
+                ScheduleUpdateSheet().also { sheet ->
+                    val bundle = Bundle()
+                    bundle.putBoolean("isEditing", false)
+                    sheet.arguments = bundle
+                }
+            )
+        }
     }
 
     /**

app/src/main/java/com/denizk0461/studip/fragment/EventPageFragment.kt

@@ -91,6 +91,7 @@ class EventPageFragment : AppFragment(), StudIPEventItemAdapter.OnClickListener
         openBottomSheet(
             ScheduleUpdateSheet().also { sheet ->
                 val bundle = Bundle()
+                bundle.putBoolean("isEditing", true)
                 bundle.putParcelable("event", event)
                 sheet.arguments = bundle
             }

app/src/main/java/com/denizk0461/studip/model/StudIPEvent.kt

@@ -20,7 +20,7 @@ import androidx.room.PrimaryKey
  */
 @Entity(tableName = "studip_events")
 data class StudIPEvent(
-    @PrimaryKey val eventId: Int,
+    @PrimaryKey(autoGenerate = true) val eventId: Int = 0,
     val title: String,
     val lecturer: String,
     val room: String,

app/src/main/java/com/denizk0461/studip/sheet/ScheduleUpdateSheet.kt

@@ -3,6 +3,7 @@ package com.denizk0461.studip.sheet
 import android.os.Bundle
 import android.view.View
 import android.view.ViewGroup
+import androidx.appcompat.widget.PopupMenu
 import androidx.fragment.app.FragmentActivity
 import androidx.fragment.app.viewModels
 import androidx.transition.TransitionManager
@@ -27,8 +28,8 @@ import com.denizk0461.studip.viewmodel.ScheduleUpdateViewModel
 class ScheduleUpdateSheet : AppSheet(R.layout.sheet_schedule_update), TimePickerFragment.OnTimeSetListener {
 
     // Editable fields
-    private var timeslotStart = ""
+    private var timeslotStart = "12:00"
-    private var timeslotEnd = ""
+    private var timeslotEnd = "13:00"
     private var colour = -1
 
     // View binding
@@ -40,13 +41,35 @@ class ScheduleUpdateSheet : AppSheet(R.layout.sheet_schedule_update), TimePicker
     // Whether the user has once clicked the delete button; used to prevent an accidental click
     private var hasClickedDelete: Boolean = false
 
+    // Determines whether the user is editing an existing event or creating a new one
+    private var isEditing: Boolean = false
+
+    // Day the event is scheduled for, default is Monday
+    private var selectedDay = 0
+
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
 
+        if (arguments?.getBoolean("isEditing") == true) {
+
             try {
-            // Retrieve event from arguments bundle
+                /*
+                 * Retrieve event from arguments bundle; determines whether this sheet is for editing or
+                 * creating an event.
+                 */
                 val event: StudIPEvent = arguments.getParcelableCompat("event")
 
+                // - Set-up for editing an existing event - //
+
+                // Set the title to reflect that an event is being edited
+                binding.sheetTitle.text = getString(R.string.sheet_schedule_update_header_edit)
+
+                // User is editing an existing event
+                isEditing = true
+
+                // Set day
+                selectedDay = event.day
+
                 // Set values of the text field to that of the event
                 timeslotStart = event.timeslotStart
                 timeslotEnd = event.timeslotEnd
@@ -57,6 +80,140 @@ class ScheduleUpdateSheet : AppSheet(R.layout.sheet_schedule_update), TimePicker
                 binding.editTextLecturers.setText(event.lecturer)
                 binding.editTextRoom.setText(event.room)
 
+                // Prepare delete button
+                binding.buttonDelete.setOnClickListener {
+                    /*
+                     * Check if the user has already clicked the button before; this is done to prevent
+                     * accidentally deleting an event.
+                     */
+                    if (hasClickedDelete) {
+                        viewModel.delete(event)
+                        // Dismiss the sheet upon deletion
+                        dismiss()
+                    } else {
+                        // Update the text to show the user that they clicked the button once
+                        TransitionManager.beginDelayedTransition(binding.buttonContainer as ViewGroup)
+                        binding.buttonDelete.text =
+                            getString(R.string.sheet_schedule_update_delete_confirm)
+                        hasClickedDelete = true
+                    }
+                }
+
+                // Prepare update/save button
+                binding.buttonSave.setOnClickListener {
+                    // Check if any of the text fields are empty
+                    checkIfTextFieldsEmpty {
+                        // Update the event if all fields are filled
+                        viewModel.update(
+                            // construct new StudIPEvent from the data the user may have edited
+                            StudIPEvent(
+                                eventId = event.eventId,
+                                title = binding.editTextTitle.text.toString().trim(),
+                                lecturer = binding.editTextLecturers.text.toString().trim(),
+                                room = binding.editTextRoom.text.toString().trim(),
+                                day = selectedDay,
+                                timeslotStart = timeslotStart,
+                                timeslotEnd = timeslotEnd,
+                                timeslotId = timeslotStart.parseToMinutes(),
+                                colour = colour,
+                            )
+                        )
+                        // Dismiss the sheet upon update
+                        dismiss()
+                    }
+                }
+
+            } catch (e: ParcelNotFoundException) {
+                // Tell the user that something went wrong when retrieving Parcelable
+                showToast(context, getString(R.string.event_update_sheet_error))
+
+                // Close the sheet
+                dismiss()
+            }
+
+        } else {
+            // - Set-up for creating a new event - //
+
+            // Set the title to reflect that an event is being added
+            binding.sheetTitle.text = getString(R.string.sheet_schedule_update_header_add)
+
+            // Hide delete button, since there is nothing to delete
+            binding.buttonDelete.visibility = View.GONE
+
+            // Prepare update/save button
+            binding.buttonSave.setOnClickListener {
+                // Check if any of the text fields are empty
+                checkIfTextFieldsEmpty {
+                    // Insert new event into the database
+                    viewModel.insert(
+                        // construct new StudIPEvent from the data the user may have edited
+                        StudIPEvent(
+                            title = binding.editTextTitle.text.toString().trim(),
+                            lecturer = binding.editTextLecturers.text.toString().trim(),
+                            room = binding.editTextRoom.text.toString().trim(),
+                            day = selectedDay,
+                            timeslotStart = timeslotStart,
+                            timeslotEnd = timeslotEnd,
+                            timeslotId = timeslotStart.parseToMinutes(),
+                            colour = colour,
+                        )
+                    )
+                    // Dismiss the sheet upon update
+                    dismiss()
+                }
+            }
+        }
+
+        // - Set-up that is required for both editing and creating a new event - //
+
+        /*
+         * TODO implement option to change the colour for the course - single-selection coloured
+         *  filter buttons with checkmarks when they're selected maybe?
+         */
+
+        // Set visibility for academic quarter button based on whether the change applies
+        binding.buttonAcademicQuarter.visibility = getVisibilityForAcademicQuarter(
+            timeslotsForAcademicQuarter.contains(timeslotStart),
+            timeslotsForAcademicQuarter.contains(timeslotEnd),
+        )
+
+        // Retrieve new values for the day of the current event
+        binding.buttonDay.text = getString(when (selectedDay) {
+            1 -> R.string.tuesday
+            2 -> R.string.wednesday
+            3 -> R.string.thursday
+            4 -> R.string.friday
+            5 -> R.string.saturday
+            6 -> R.string.sunday
+            else -> R.string.monday // assume Monday
+        })
+
+        // Open the menu for the day picker button
+        binding.buttonDay.setOnClickListener {
+            PopupMenu(binding.root.context, binding.buttonDay).apply {
+                setOnMenuItemClickListener { item ->
+                    // Retrieve new values for the day selected by the user
+                    val (newDay, newDayId) = when (item?.itemId) {
+                        R.id.tuesday -> Pair(1, R.string.tuesday)
+                        R.id.wednesday -> Pair(2, R.string.wednesday)
+                        R.id.thursday -> Pair(3, R.string.thursday)
+                        R.id.friday -> Pair(4, R.string.friday)
+                        R.id.saturday -> Pair(5, R.string.saturday)
+                        R.id.sunday -> Pair(6, R.string.sunday)
+                        else -> Pair(0, R.string.monday) // assume Monday
+                    }
+
+                    selectedDay = newDay
+
+                    // Set newly selected day to the button
+                    binding.buttonDay.text = getString(newDayId)
+
+                    true
+                }
+                inflate(R.menu.menu_days)
+                show()
+            }
+        }
 
         /*
          * Show academic quarter suggestion if it is applicable. For this to be the case, both the
@@ -72,7 +229,7 @@ class ScheduleUpdateSheet : AppSheet(R.layout.sheet_schedule_update), TimePicker
                 val newStart = getTimestampAcademicQuarterStart(timeslotStart)
                 val newEnd = getTimestampAcademicQuarterEnd(timeslotEnd)
 
-                    // Set the buttons to the new timesatmps
+                // Set the buttons to the new time stamps
                 timeslotStart = newStart
                 binding.buttonTimeStart.text = newStart
                 timeslotEnd = newEnd
@@ -94,11 +251,6 @@ class ScheduleUpdateSheet : AppSheet(R.layout.sheet_schedule_update), TimePicker
             }
         }
 
-            binding.buttonAcademicQuarter.visibility = getVisibilityForAcademicQuarter(
-                timeslotsForAcademicQuarter.contains(timeslotStart),
-                timeslotsForAcademicQuarter.contains(timeslotEnd),
-            )
-
         // Prepare timestamp buttons
         binding.buttonTimeStart.text = timeslotStart
         binding.buttonTimeStart.setOnClickListener {
@@ -125,61 +277,11 @@ class ScheduleUpdateSheet : AppSheet(R.layout.sheet_schedule_update), TimePicker
             }.show((context as FragmentActivity).supportFragmentManager, "timePicker")
         }
 
-            /*
-             * TODO implement option to change the colour for the course - single-selection coloured
-             *  filter buttons with checkmarks when they're selected maybe?
-             */
-
         // Prepare cancel button
         binding.buttonCancel.setOnClickListener {
             // Do nothing and dismiss the sheet
             dismiss()
         }
-
-            // Prepare delete button
-            binding.buttonDelete.setOnClickListener {
-                /*
-                 * Check if the user has already clicked the button before; this is done to prevent
-                 * accidentally deleting an event.
-                 */
-                if (hasClickedDelete) {
-                    viewModel.delete(event)
-                    // Dismiss the sheet upon deletion
-                    dismiss()
-                } else {
-                    // Update the text to show the user that they clicked the button once
-                    TransitionManager.beginDelayedTransition(binding.buttonContainer as ViewGroup)
-                    binding.buttonDelete.text = getString(R.string.sheet_schedule_update_delete_confirm)
-                    hasClickedDelete = true
-                }
-            }
-
-            // Prepare update/save button
-            binding.buttonSave.setOnClickListener {
-                viewModel.update(
-                    // construct new StudIPEvent from the data the user may have edited
-                    StudIPEvent(
-                        eventId = event.eventId,
-                        title = binding.editTextTitle.text.toString(),
-                        lecturer = binding.editTextLecturers.text.toString(),
-                        room = binding.editTextRoom.text.toString(),
-                        day = event.day,
-                        timeslotStart = timeslotStart,
-                        timeslotEnd = timeslotEnd,
-                        timeslotId = timeslotStart.parseToMinutes(),
-                        colour = colour,
-                    )
-                )
-                // Dismiss the sheet upon update
-                dismiss()
-            }
-        } catch (e: ParcelNotFoundException) {
-            // Tell the user that something went wrong when retrieving Parcelable
-            showToast(context, getString(R.string.event_update_sheet_error))
-
-            // Close the sheet
-            dismiss()
-        }
     }
 
     /**
@@ -218,6 +320,53 @@ class ScheduleUpdateSheet : AppSheet(R.layout.sheet_schedule_update), TimePicker
         }
     }
 
+    /**
+     * Checks whether the text fields in the sheet are blank (meaning, with whitespace trimmed from
+     * the start and the end of the string). Executes an action if the fields are all filled.
+     *
+     * @param actionIfFilled    action to execute if all fields are filled
+     */
+    private fun checkIfTextFieldsEmpty(actionIfFilled: () -> Unit) {
+
+        // Assume at the start that no fields are empty; this may be changed during the checks
+        var hasEmptyFields = false
+
+        // Check if the title field is blank
+        if (binding.editTextTitle.text.toString().isBlank()) {
+            // Set an error on the title field
+            binding.editTextTitle.error =
+                getString(R.string.sheet_schedule_update_text_field_empty_error)
+
+            // Set that the action must not be executed
+            hasEmptyFields = true
+        }
+
+        // Check if the lecturer field is blank
+        if (binding.editTextLecturers.text.toString().isBlank()) {
+            // Set an error on the lecturer field
+            binding.editTextLecturers.error =
+                getString(R.string.sheet_schedule_update_text_field_empty_error)
+
+            // Set that the action must not be executed
+            hasEmptyFields = true
+        }
+
+        // Check if the room field is blank
+        if (binding.editTextRoom.text.toString().isBlank()) {
+            // Set an error on the room field
+            binding.editTextRoom.error =
+                getString(R.string.sheet_schedule_update_text_field_empty_error)
+
+            // Set that the action must not be executed
+            hasEmptyFields = true
+        }
+
+        // If any fields are empty, don't execute the action
+        if (!hasEmptyFields) {
+            actionIfFilled()
+        }
+    }
+
     /**
      * Determines which visibility the academic quarter button should have given the timestamps.
      *

app/src/main/java/com/denizk0461/studip/viewmodel/ScheduleUpdateViewModel.kt

@@ -5,6 +5,13 @@ import com.denizk0461.studip.model.StudIPEvent
 
 class ScheduleUpdateViewModel(application: Application) : AppViewModel(application) {
 
+    /**
+     * Inserts a new schedule element.
+     *
+     * @param event the event to save
+     */
+    fun insert(event: StudIPEvent) { doAsync { repo.insert(event) } }
+
     /**
      * Updates a schedule element.
      *

app/src/main/res/drawable/edit_calendar.xml

@@ -0,0 +1,5 @@
+<vector android:height="24dp" android:tint="#000000"
+    android:viewportHeight="24" android:viewportWidth="24"
+    android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
+    <path android:fillColor="@android:color/white" android:pathData="M12,22H5c-1.11,0 -2,-0.9 -2,-2L3.01,6c0,-1.1 0.88,-2 1.99,-2h1V2h2v2h8V2h2v2h1c1.1,0 2,0.9 2,2v6h-2v-2H5v10h7V22zM22.13,16.99l0.71,-0.71c0.39,-0.39 0.39,-1.02 0,-1.41l-0.71,-0.71c-0.39,-0.39 -1.02,-0.39 -1.41,0l-0.71,0.71L22.13,16.99zM21.42,17.7l-5.3,5.3H14v-2.12l5.3,-5.3L21.42,17.7z"/>
+</vector>

app/src/main/res/drawable/plus.xml

@@ -0,0 +1,5 @@
+<vector android:height="24dp" android:tint="#000000"
+    android:viewportHeight="24" android:viewportWidth="24"
+    android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
+    <path android:fillColor="@android:color/white" android:pathData="M19,13h-6v6h-2v-6H5v-2h6V5h2v6h6v2z"/>
+</vector>

app/src/main/res/layout/fragment_canteen.xml

@@ -17,11 +17,6 @@
             android:orientation="vertical"
             app:layout_scrollFlags="scroll|exitUntilCollapsed">
 
-            <androidx.appcompat.widget.LinearLayoutCompat
-                android:layout_width="match_parent"
-                android:layout_height="wrap_content"
-                android:orientation="horizontal">
-
             <com.google.android.material.button.MaterialButton
                 android:id="@+id/button_canteen_picker"
                 style="@style/Widget.Material3.Button.TextButton"
@@ -29,8 +24,26 @@
                 android:layout_height="wrap_content"
                 android:textSize="18sp"
                 android:layout_gravity="start"
+                android:layout_marginStart="8dp"
                 android:fontFamily="@font/lato_bolditalic"/>
 
+            <androidx.constraintlayout.widget.ConstraintLayout
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginHorizontal="16dp">
+
+                <TextView
+                    android:id="@+id/app_title_bar"
+                    android:layout_width="0dp"
+                    android:layout_height="wrap_content"
+                    android:text="@string/title_food"
+                    android:textSize="32sp"
+                    android:fontFamily="@font/lato_bolditalic"
+                    app:layout_constraintTop_toTopOf="parent"
+                    app:layout_constraintBottom_toBottomOf="parent"
+                    app:layout_constraintStart_toStartOf="parent"
+                    app:layout_constraintEnd_toStartOf="@id/button_info"/>
+
                 <com.google.android.material.button.MaterialButton
                     style="@style/Widget.Material3.Button.TextButton"
                     android:id="@+id/button_info"
@@ -39,19 +52,13 @@
                     android:minWidth="0dp"
                     app:icon="@drawable/info"
                     app:iconPadding="0dp"
-                    android:layout_gravity="end"
+                    android:layout_gravity="center_vertical|end"
-                    app:iconTint="?attr/colorOnSurfaceVariant"/>
+                    app:iconTint="?attr/colorOnSurfaceVariant"
+                    app:layout_constraintTop_toTopOf="parent"
+                    app:layout_constraintBottom_toBottomOf="parent"
+                    app:layout_constraintEnd_toEndOf="parent"/>
 
-            </androidx.appcompat.widget.LinearLayoutCompat>
+            </androidx.constraintlayout.widget.ConstraintLayout>
-
-            <TextView
-                android:id="@+id/app_title_bar"
-                android:layout_width="match_parent"
-                android:layout_height="48dp"
-                android:text="@string/title_food"
-                android:textSize="32sp"
-                android:fontFamily="@font/lato_bolditalic"
-                android:layout_marginHorizontal="16dp"/>
 
             <HorizontalScrollView
                 android:id="@+id/scroll_view_chip"
@@ -215,6 +222,16 @@
 
     </androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
 
+    <com.google.android.material.floatingactionbutton.FloatingActionButton
+        android:id="@+id/fab_refresh_offers"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        app:srcCompat="@drawable/refresh"
+        android:contentDescription="@string/canteen_fab_refresh_content_desc"
+        android:layout_gravity="bottom|end"
+        android:layout_marginEnd="@dimen/fab_margin"
+        android:layout_marginBottom="@dimen/fab_margin"/>
+
 <!--    <androidx.coordinatorlayout.widget.CoordinatorLayout-->
 <!--        android:id="@+id/snackbar_container"-->
 <!--        android:layout_width="0dp"-->

app/src/main/res/layout/fragment_event.xml

@@ -14,14 +14,14 @@
 
         <TextView
             android:id="@+id/app_title_bar"
-            android:layout_width="match_parent"
+            android:layout_width="0dp"
-            android:layout_height="48dp"
+            android:layout_height="wrap_content"
             android:text="@string/title_schedule"
             android:textSize="32sp"
-            app:layout_scrollFlags="scroll|exitUntilCollapsed"
             android:fontFamily="@font/lato_bolditalic"
+            android:layout_marginTop="16dp"
             android:layout_marginHorizontal="16dp"
-            android:layout_marginTop="16dp"/>
+            app:layout_scrollFlags="scroll|exitUntilCollapsed"/>
 
         <com.google.android.material.tabs.TabLayout
             android:id="@+id/day_tab_layout"
@@ -38,4 +38,14 @@
         android:layout_height="match_parent"
         app:layout_behavior="@string/appbar_scrolling_view_behavior"/>
 
+    <com.google.android.material.floatingactionbutton.FloatingActionButton
+        android:id="@+id/fab_add_event"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        app:srcCompat="@drawable/plus"
+        android:contentDescription="@string/sheet_schedule_update_header_add"
+        android:layout_gravity="bottom|end"
+        android:layout_marginEnd="@dimen/fab_margin"
+        android:layout_marginBottom="@dimen/fab_margin"/>
+
 </androidx.coordinatorlayout.widget.CoordinatorLayout>

app/src/main/res/layout/fragment_settings.xml

@@ -15,8 +15,8 @@
 
         <TextView
             android:id="@+id/app_title_bar"
-            android:layout_width="match_parent"
+            android:layout_width="wrap_content"
-            android:layout_height="48dp"
+            android:layout_height="wrap_content"
             android:layout_marginHorizontal="16dp"
             android:layout_marginTop="16dp"
             android:fontFamily="@font/lato_bolditalic"

app/src/main/res/layout/sheet_schedule_update.xml

@@ -18,11 +18,11 @@
         android:layout_marginBottom="8dp">
 
         <TextView
+            android:id="@+id/sheet_title"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:textSize="22sp"
             android:fontFamily="@font/lato_blackitalic"
-            android:text="@string/sheet_schedule_update_header"
             android:layout_gravity="start|center_vertical"
             android:paddingHorizontal="24dp"/>
 
@@ -125,6 +125,14 @@
 
             </androidx.appcompat.widget.LinearLayoutCompat>
 
+            <com.google.android.material.button.MaterialButton
+                android:id="@+id/button_day"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginBottom="8dp"
+                app:icon="@drawable/edit_calendar"
+                android:layout_gravity="end"/>
+
             <com.google.android.material.button.MaterialButton
                 android:id="@+id/button_academic_quarter"
                 android:layout_width="wrap_content"

app/src/main/res/menu/menu_days.xml

@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android">
+    <item
+        android:id="@+id/monday"
+        android:title="@string/monday"
+        android:enabled="true"/>
+    <item
+        android:id="@+id/tuesday"
+        android:title="@string/tuesday"
+        android:enabled="true"/>
+    <item
+        android:id="@+id/wednesday"
+        android:title="@string/wednesday"
+        android:enabled="true"/>
+    <item
+        android:id="@+id/thursday"
+        android:title="@string/thursday"
+        android:enabled="true"/>
+    <item
+        android:id="@+id/friday"
+        android:title="@string/friday"
+        android:enabled="true"/>
+    <item
+        android:id="@+id/saturday"
+        android:title="@string/saturday"
+        android:enabled="true"/>
+    <item
+        android:id="@+id/sunday"
+        android:title="@string/sunday"
+        android:enabled="true"/>
+</menu>

app/src/main/res/values-de/strings.xml

@@ -43,7 +43,8 @@
     <string name="sheet_schedule_update_delete_confirm">Sicher?</string>
     <string name="cancel">Abbrechen</string>
     <string name="confirm">Bestätigen</string>
-    <string name="sheet_schedule_update_header">Veranstaltung bearbeiten</string>
+    <string name="sheet_schedule_update_header_edit">Veranstaltung bearbeiten</string>
+    <string name="sheet_schedule_update_header_add">Veranstaltung hinzufügen</string>
     <string name="sheet_schedule_update_title_hint">Veranstaltungstitel</string>
     <string name="sheet_schedule_update_lecturers_hint">Dozierende(r)</string>
     <string name="sheet_schedule_update_room_hint">Raum</string>
@@ -51,9 +52,11 @@
     <string name="sheet_schedule_update_hint_quarter_error">Sorry, ein Fehler ist aufgetreten!</string>
     <string name="sheet_schedule_update_timestamp_error_start">Der Kurs kann nicht anfangen nachdem er aufhört!</string>
     <string name="sheet_schedule_update_timestamp_error_end">Der Kurs kann nicht enden bevor er anfängt!</string>
+    <string name="sheet_schedule_update_text_field_empty_error">Dieses Feld darf nicht leer sein</string>
 
     <string name="canteen_no_offer_header">Kein Angebot</string>
     <string name="canteen_no_offer_desc">Für diesen Tag sind keine Angebote vorhanden</string>
+    <string name="canteen_fab_refresh_content_desc">Aktualisiere Angebote</string>
 
     <string name="sheet_licences_header">Lizenzen</string>
 

app/src/main/res/values/strings.xml

@@ -43,7 +43,8 @@
     <string name="sheet_schedule_update_delete_confirm">Sure?</string>
     <string name="cancel">Cancel</string>
     <string name="confirm">Confirm</string>
-    <string name="sheet_schedule_update_header">Edit Event</string>
+    <string name="sheet_schedule_update_header_edit">Edit event</string>
+    <string name="sheet_schedule_update_header_add">Add event</string>
     <string name="sheet_schedule_update_title_hint">Event title</string>
     <string name="sheet_schedule_update_lecturers_hint">Lecturer(s)</string>
     <string name="sheet_schedule_update_room_hint">Room</string>
@@ -52,9 +53,11 @@
     <string name="sheet_schedule_update_hint_quarter_error">Sorry, an error occurred!</string>
     <string name="sheet_schedule_update_timestamp_error_start">The course can\'t begin after it ends!</string>
     <string name="sheet_schedule_update_timestamp_error_end">The course can\'t end before it begins!</string>
+    <string name="sheet_schedule_update_text_field_empty_error">This field cannot be empty</string>
 
     <string name="canteen_no_offer_header">No offers</string>
     <string name="canteen_no_offer_desc">There are no offers available for this day</string>
+    <string name="canteen_fab_refresh_content_desc">Refresh offers</string>
 
     <string name="sheet_licences_header">Licences</string>
     <string name="sheet_licences_content" translatable="false">Android developer resources provided by Google.\nhttps://developer.android.com/\n\nCrash reporting provided by Google.\nhttps://firebase.google.com/products/crashlytics/\n\nDesign guidelines, icons, and colour palette provided by Google.\nhttps://m3.material.io/\n\nAdditional icons provided by Flaticon.\nhttps://www.flaticon.com/\n\nWeb scraping functionality provided by Jonathan Hedley.\nhttps://jhy.io/ | https://jsoup.org/</string>