Move all functionality to viewmodel. Use simple button format.

app/build.gradle

@@ -97,6 +97,7 @@ dependencies {
     implementation 'androidx.preference:preference-ktx:1.2.0'
     implementation 'androidx.recyclerview:recyclerview:1.2.1'
     implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.3.1'
+    implementation 'androidx.compose.material:material-icons-extended:1.3.1'
     implementation 'androidx.activity:activity-compose:1.3.1'
     implementation "androidx.compose.ui:ui:$compose_version"
     implementation "androidx.compose.ui:ui-tooling-preview:$compose_version"

app/src/main/java/me/zobrist/tichucounter/domain/Tichu.kt

@@ -1,6 +1,5 @@
 package me.zobrist.tichucounter.domain
 
-import me.zobrist.tichucounter.data.Round
 import javax.inject.Inject
 
 class Tichu @Inject constructor() {

app/src/main/java/me/zobrist/tichucounter/ui/counter/CounterFragment.kt

@@ -13,8 +13,6 @@ import kotlinx.coroutines.launch
 import me.zobrist.tichucounter.R
 import me.zobrist.tichucounter.data.Round
 import me.zobrist.tichucounter.databinding.FragmentCounterBinding
-import me.zobrist.tichucounter.domain.Tichu
-import me.zobrist.tichucounter.domain.getAbsoluteDifference
 import me.zobrist.tichucounter.repository.GameRepository
 import me.zobrist.tichucounter.ui.FragmentBase
 import javax.inject.Inject

app/src/main/java/me/zobrist/tichucounter/ui/counter/Keyboard.kt

@@ -1,6 +1,5 @@
 package me.zobrist.tichucounter.ui.counter
 
-import android.icu.number.FormattedNumber
 import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
@@ -8,8 +7,14 @@ import android.view.ViewGroup
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.Spacer
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.outlined.Backspace
+import androidx.compose.material.icons.outlined.Check
 import androidx.compose.material3.*
-import androidx.compose.runtime.*
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.CompositionLocalProvider
+import androidx.compose.runtime.MutableState
+import androidx.compose.runtime.mutableStateOf
 import androidx.compose.ui.ExperimentalComposeUiApi
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.focus.FocusRequester
@@ -18,16 +23,13 @@ import androidx.compose.ui.focus.onFocusChanged
 import androidx.compose.ui.geometry.Rect
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.platform.*
+import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.tooling.preview.Preview
 import androidx.fragment.app.activityViewModels
-import androidx.lifecycle.viewModelScope
 import dagger.hilt.android.AndroidEntryPoint
-import kotlinx.coroutines.flow.launchIn
-import kotlinx.coroutines.flow.onEach
+import me.zobrist.tichucounter.R
 import me.zobrist.tichucounter.databinding.FragmentKeyboardBinding
-import me.zobrist.tichucounter.domain.Tichu
 import me.zobrist.tichucounter.ui.FragmentBase
-import me.zobrist.tichucounter.ui.history.IHistoryFragmentViewModel
 
 @AndroidEntryPoint
 class Keyboard : FragmentBase<FragmentKeyboardBinding>() {
@@ -38,28 +40,12 @@ class Keyboard : FragmentBase<FragmentKeyboardBinding>() {
 
     private val viewModel: KeyboardViewModel by activityViewModels()
 
-    private val requester = FocusRequester()
-    private var isAFocused: Boolean = false
-    private var isBFocused: Boolean = false
-
-    var enableSubmit = mutableStateOf(false)
-
     override fun onCreateView(
         inflater: LayoutInflater,
         container: ViewGroup?,
         savedInstanceState: Bundle?
     ): View {
 
-        snapshotFlow { viewModel.scoreA.value }
-            .onEach {
-                enableSubmitOnValidRound(viewModel)
-            }
-
-        snapshotFlow { viewModel.scoreB.value }
-            .onEach {
-                enableSubmitOnValidRound(viewModel)
-            }
-
         return ComposeView(requireContext()).apply {
             // Dispose of the Composition when the view's LifecycleOwner
             // is destroyed
@@ -72,110 +58,6 @@ class Keyboard : FragmentBase<FragmentKeyboardBinding>() {
         }
     }
 
-    private fun enableSubmitOnValidRound(viewModel: IKeyboardViewModel) {
-        enableSubmit.value = try {
-            val tichu = Tichu()
-            if(tichu.isValidRound(viewModel.scoreA.value.toInt(), viewModel.scoreB.value.toInt()))
-            {
-                true
-            }
-            false
-        } catch(_:Exception)
-        {
-            false
-        }
-    }
-
-    private fun giveFocusToAIfNone() {
-        if(!isAFocused && !isBFocused)
-        {
-            requester.requestFocus()
-        }
-    }
-
-    private fun appendToFocusedScore(toAppend: String, viewModel: IKeyboardViewModel) {
-        val value = getActiveValue(viewModel)
-        value.value += toAppend
-        updateOtherScore(viewModel)
-    }
-
-    private fun updateOtherScore(viewModel: IKeyboardViewModel) {
-        val value = getActiveValue(viewModel)
-
-        try {
-            val tichu = Tichu()
-            val myScore = value.value.toInt()
-            val hisScore = tichu.calculateOtherScore(myScore)
-            if(tichu.isValidRound(myScore, hisScore))
-            {
-                updateInactiveValue(hisScore?.toString() ?: "", viewModel)
-            } else
-            {
-                updateInactiveValue("", viewModel)
-            }
-        } catch(_: Exception) {
-            updateInactiveValue("", viewModel)
-        }
-    }
-
-    private fun negateActiveInput(viewModel: IKeyboardViewModel) {
-        val value = getActiveValue(viewModel)
-
-        if(value.value.contains("-"))
-        {
-            value.value = value.value.replace("-", "")
-        } else {
-            value.value = "-" + value.value
-        }
-
-        updateOtherScore(viewModel)
-    }
-
-    private fun addToActiveInput(toAdd: Int, viewModel: IKeyboardViewModel) {
-        val value = getActiveValue(viewModel)
-
-        try {
-            val temp = value.value.toInt() + toAdd
-            value.value = temp.toString()
-        } catch (e: Exception) {
-            value.value = toAdd.toString()
-        }
-    }
-
-    private fun removeFromActiveInput(viewModel: IKeyboardViewModel) {
-        val value = getActiveValue(viewModel)
-        if(value.value != "") {
-            value.value = value.value.dropLast(1)
-        }
-        updateOtherScore(viewModel)
-    }
-
-    private fun getActiveValue(viewModel: IKeyboardViewModel): MutableState<String> {
-        giveFocusToAIfNone()
-        if (isBFocused) {
-            return viewModel.scoreB
-        }
-        return viewModel.scoreA
-    }
-
-    private fun updateInactiveValue(value: String, viewModel: IKeyboardViewModel){
-        giveFocusToAIfNone()
-        if (isBFocused) {
-            viewModel.scoreA.value = value
-        } else
-        {
-            viewModel.scoreB.value = value
-        }
-
-        try {
-            val tichu = Tichu()
-            enableSubmit.value = tichu.isValidRound(viewModel.scoreA.value.toInt(), viewModel.scoreB.value.toInt())
-        } catch(_: java.lang.NumberFormatException) {
-            enableSubmit.value = false
-        }
-    }
-
-
     @OptIn(ExperimentalMaterial3Api::class, ExperimentalComposeUiApi::class)
     @Preview
     @Composable
@@ -195,9 +77,9 @@ class Keyboard : FragmentBase<FragmentKeyboardBinding>() {
                         modifier = Modifier
                             .onFocusChanged {
                                 keyboardController?.hide()
-                                isAFocused = it.isFocused
+                                viewModel.isAFocused.value = it.isFocused
                             }
-                            .focusRequester(requester)
+                            .focusRequester(viewModel.requestFocusA.value)
                             .weight(1f),
                         colors = TextFieldDefaults.textFieldColors(
                             cursorColor = Color.Transparent,
@@ -212,7 +94,7 @@ class Keyboard : FragmentBase<FragmentKeyboardBinding>() {
                         modifier = Modifier
                             .onFocusChanged {
                                 keyboardController?.hide()
-                                isBFocused = it.isFocused
+                                viewModel.isBFocused.value = it.isFocused
                             }
                             .weight(1f),
                         colors = TextFieldDefaults.textFieldColors(
@@ -224,70 +106,79 @@ class Keyboard : FragmentBase<FragmentKeyboardBinding>() {
             }
 
             Row {
-                Button(
-                    onClick = { appendToFocusedScore("1", viewModel) },
+                TextButton(
+                    onClick = { viewModel.appendToFocusedScore("1") },
                     modifier = Modifier.weight(1F)
                 ) { Text("1") }
-                Button(
-                    onClick = { appendToFocusedScore("2", viewModel ) },
+                TextButton(
+                    onClick = { viewModel.appendToFocusedScore("2") },
                     modifier = Modifier.weight(1F)
                 ) { Text("2") }
-                Button(
-                    onClick = { appendToFocusedScore("3", viewModel) },
+                TextButton(
+                    onClick = { viewModel.appendToFocusedScore("3") },
                     modifier = Modifier.weight(1F)
                 ) { Text("3") }
-                Button(onClick = { addToActiveInput(100, viewModel) }, modifier = Modifier.weight(1F)) { Text("+100") }
+                TextButton(
+                    onClick = { viewModel.addToActiveInput(100) },
+                    modifier = Modifier.weight(1F)
+                ) { Text("+100") }
 
             }
             Row {
-                Button(
-                    onClick = { appendToFocusedScore("4", viewModel) },
+                TextButton(
+                    onClick = { viewModel.appendToFocusedScore("4") },
                     modifier = Modifier.weight(1F)
                 ) { Text("4") }
-                Button(
-                    onClick = { appendToFocusedScore("5", viewModel) },
+                TextButton(
+                    onClick = { viewModel.appendToFocusedScore("5") },
                     modifier = Modifier.weight(1F)
                 ) { Text("5") }
-                Button(
-                    onClick = { appendToFocusedScore("6", viewModel) },
+                TextButton(
+                    onClick = { viewModel.appendToFocusedScore("6") },
                     modifier = Modifier.weight(1F)
                 ) { Text("6") }
-                Button(onClick = { addToActiveInput(-100, viewModel) }, modifier = Modifier.weight(1F)) { Text("-100") }
+                TextButton(
+                    onClick = { viewModel.addToActiveInput(-100) },
+                    modifier = Modifier.weight(1F)
+                ) { Text("-100") }
             }
             Row {
-                Button(
-                    onClick = { appendToFocusedScore("7", viewModel) },
+                TextButton(
+                    onClick = { viewModel.appendToFocusedScore("7") },
                     modifier = Modifier.weight(1F)
                 ) { Text("7") }
-                Button(
-                    onClick = { appendToFocusedScore("8", viewModel) },
+                TextButton(
+                    onClick = { viewModel.appendToFocusedScore("8") },
                     modifier = Modifier.weight(1F)
                 ) { Text("8") }
-                Button(
-                    onClick = { appendToFocusedScore("9", viewModel) },
+                TextButton(
+                    onClick = { viewModel.appendToFocusedScore("9") },
                     modifier = Modifier.weight(1F)
                 ) { Text("9") }
-                Button(onClick = { removeFromActiveInput(viewModel) }, modifier = Modifier.weight(1F)) { Text("DEL") }
+                IconButton(
+                    onClick = { viewModel.removeLastCharFromActive() },
+                    modifier = Modifier.weight(1F)
+                ) { Icon(Icons.Outlined.Backspace, stringResource(R.string.submit)) }
             }
             Row {
-                Button(onClick = { negateActiveInput(viewModel) }, modifier = Modifier.weight(1F)) { Text("+/-") }
-                Button(
-                    onClick = { appendToFocusedScore("0", viewModel) },
+                TextButton(
+                    onClick = { viewModel.negateActiveInput() },
+                    modifier = Modifier.weight(1F)
+                ) { Text("+/-") }
+                TextButton(
+                    onClick = { viewModel.appendToFocusedScore("0") },
                     modifier = Modifier.weight(1F)
                 ) { Text("0") }
                 Spacer(modifier = Modifier.weight(1F))
-                Button(onClick = { submit(viewModel) }, modifier = Modifier.weight(1F), enabled = enableSubmit.value) { Text("ENTER") }
+                IconButton(
+                    onClick = { viewModel.submitScore() },
+                    modifier = Modifier.weight(1F),
+                    enabled = viewModel.enableSubmit.value
+                ) { Icon(Icons.Outlined.Check, stringResource(R.string.submit)) }
             }
         }
     }
 
-    private fun submit(viewModel: IKeyboardViewModel) {
-        viewModel.submitScore(viewModel.scoreA.value.toInt(), viewModel.scoreB.value.toInt())
-        viewModel.scoreA.value = ""
-        viewModel.scoreB.value = ""
-        enableSubmit.value = false
-    }
-
     object EmptyTextToolbar : TextToolbar {
         override val status: TextToolbarStatus = TextToolbarStatus.Hidden
 
@@ -306,8 +197,29 @@ class Keyboard : FragmentBase<FragmentKeyboardBinding>() {
     internal class DefaultViewModel : IKeyboardViewModel {
         override var scoreA: MutableState<String> = mutableStateOf("")
         override var scoreB: MutableState<String> = mutableStateOf("")
+        override var enableSubmit = mutableStateOf(false)
+        override var isAFocused = mutableStateOf(false)
+        override var isBFocused = mutableStateOf(false)
+        override var requestFocusA = mutableStateOf(FocusRequester())
 
-        override fun submitScore(scoreA: Int, scoreB: Int) {
+        override fun appendToFocusedScore(toAppend: String) {
+            TODO("Not yet implemented")
+        }
+
+        override fun negateActiveInput() {
+            TODO("Not yet implemented")
+        }
+
+        override fun addToActiveInput(toAdd: Int) {
+            TODO("Not yet implemented")
+        }
+
+        override fun removeLastCharFromActive() {
+            TODO("Not yet implemented")
+        }
+
+        override fun submitScore() {
+            TODO("Not yet implemented")
         }
     }
 

app/src/main/java/me/zobrist/tichucounter/ui/counter/KeyboardViewModel.kt

@@ -1,16 +1,11 @@
 package me.zobrist.tichucounter.ui.counter
 
 import androidx.compose.runtime.MutableState
-import androidx.compose.runtime.State
 import androidx.compose.runtime.mutableStateOf
-import androidx.compose.runtime.snapshotFlow
-import androidx.lifecycle.LiveData
-import androidx.lifecycle.MutableLiveData
+import androidx.compose.ui.focus.FocusRequester
 import androidx.lifecycle.ViewModel
 import androidx.lifecycle.viewModelScope
 import dagger.hilt.android.lifecycle.HiltViewModel
-import kotlinx.coroutines.flow.launchIn
-import kotlinx.coroutines.flow.onEach
 import kotlinx.coroutines.launch
 import me.zobrist.tichucounter.domain.Tichu
 import me.zobrist.tichucounter.repository.GameRepository
@@ -19,19 +14,124 @@ import javax.inject.Inject
 interface IKeyboardViewModel {
     var scoreA: MutableState<String>
     var scoreB: MutableState<String>
-    fun submitScore(scoreA: Int, scoreB: Int)
+    var enableSubmit: MutableState<Boolean>
+    var isAFocused: MutableState<Boolean>
+    var isBFocused: MutableState<Boolean>
+    var requestFocusA: MutableState<FocusRequester>
+
+    fun appendToFocusedScore(toAppend: String)
+
+    fun negateActiveInput()
+
+    fun addToActiveInput(toAdd: Int)
+
+    fun removeLastCharFromActive()
+
+    fun submitScore()
 }
 
 @HiltViewModel
 class KeyboardViewModel @Inject constructor(private val gameRepository: GameRepository) :
     ViewModel(), IKeyboardViewModel {
-    override var scoreA = mutableStateOf( "")
+    override var scoreA = mutableStateOf("")
     override var scoreB = mutableStateOf("")
+    override var enableSubmit = mutableStateOf(false)
+    override var isAFocused = mutableStateOf(false)
+    override var isBFocused = mutableStateOf(false)
+    override var requestFocusA = mutableStateOf(FocusRequester())
 
-
-    override fun submitScore(scoreA: Int, scoreB: Int) {
+    override fun submitScore() {
         viewModelScope.launch {
-            gameRepository.addRoundToActiveGame(scoreA, scoreB)
+            gameRepository.addRoundToActiveGame(scoreA.value.toInt(), scoreB.value.toInt())
+        }
+        scoreA.value = ""
+        scoreB.value = ""
+        enableSubmit.value = false
+    }
+
+    override fun appendToFocusedScore(toAppend: String) {
+        val value = getActiveValue()
+        value.value += toAppend
+        updateOtherScore()
+    }
+
+    override fun negateActiveInput() {
+        val value = getActiveValue()
+
+        if (value.value.contains("-")) {
+            value.value = value.value.replace("-", "")
+        } else {
+            value.value = "-" + value.value
+        }
+
+        updateOtherScore()
+    }
+
+    override fun addToActiveInput(toAdd: Int) {
+        val value = getActiveValue()
+
+        try {
+            val temp = value.value.toInt() + toAdd
+            value.value = temp.toString()
+        } catch (e: Exception) {
+            value.value = toAdd.toString()
         }
     }
+
+    override fun removeLastCharFromActive() {
+        val value = getActiveValue()
+        if (value.value != "") {
+            value.value = value.value.dropLast(1)
+        }
+        updateOtherScore()
+    }
+
+
+    private fun giveFocusToAIfNone() {
+        if (!isAFocused.value && !isBFocused.value) {
+            requestFocusA.value.requestFocus()
+        }
+    }
+
+    private fun updateOtherScore() {
+        val value = getActiveValue()
+
+        try {
+            val tichu = Tichu()
+            val myScore = value.value.toInt()
+            val hisScore = tichu.calculateOtherScore(myScore)
+            if (tichu.isValidRound(myScore, hisScore)) {
+                updateInactiveValue(hisScore?.toString() ?: "")
+            } else {
+                updateInactiveValue("")
+            }
+        } catch (_: Exception) {
+            updateInactiveValue("")
+        }
+    }
+
+    private fun getActiveValue(): MutableState<String> {
+        giveFocusToAIfNone()
+        if (isBFocused.value) {
+            return scoreB
+        }
+        return scoreA
+    }
+
+    private fun updateInactiveValue(value: String) {
+        giveFocusToAIfNone()
+        if (isBFocused.value) {
+            scoreA.value = value
+        } else {
+            scoreB.value = value
+        }
+
+        try {
+            val tichu = Tichu()
+            enableSubmit.value = tichu.isValidRound(scoreA.value.toInt(), scoreB.value.toInt())
+        } catch (_: java.lang.NumberFormatException) {
+            enableSubmit.value = false
+        }
+    }
+
 }

app/src/test/java/me/zobrist/tichucounter/TichuUnitTest.kt

@@ -1,6 +1,5 @@
 package me.zobrist.tichucounter
 
-import me.zobrist.tichucounter.data.Round
 import me.zobrist.tichucounter.domain.Tichu
 import org.junit.Assert.*
 import org.junit.Test
@@ -37,13 +36,13 @@ class TichuUnitTest {
         assertGeneratedRound(tichu, 400, 0)
 
         //Good rounds trough Tichu
-        assertValidRound(tichu,  0, 0)
-        assertValidRound(tichu,  -100, 0)
+        assertValidRound(tichu, 0, 0)
+        assertValidRound(tichu, -100, 0)
 
         //Bad rounds
-        assertInvalidRound(tichu,  5, 12)
-        assertInvalidRound(tichu,  12, 5)
-        assertInvalidRound(tichu,  5, 55)
+        assertInvalidRound(tichu, 5, 12)
+        assertInvalidRound(tichu, 12, 5)
+        assertInvalidRound(tichu, 5, 55)
     }
 
     private fun assertGeneratedRound(tichu: Tichu, scoreA: Int, expectedScoreB: Int) {