Chore: Exercise Overview adjustments and PR cleanup

core/ui/src/main/kotlin/de/tum/informatics/www1/artemis/native_app/core/ui/exercise/ExerciseActionButtons.kt

@@ -6,16 +6,16 @@ import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.shape.RoundedCornerShape
 import androidx.compose.material.icons.Icons
-import androidx.compose.material.icons.filled.Info
+import androidx.compose.material.icons.outlined.Info
 import androidx.compose.material3.Button
 import androidx.compose.material3.Icon
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.collectAsState
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
-import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
@@ -29,6 +29,7 @@ import de.tum.informatics.www1.artemis.native_app.core.model.exercise.latestPart
 import de.tum.informatics.www1.artemis.native_app.core.model.exercise.participation.Participation
 import de.tum.informatics.www1.artemis.native_app.core.ui.R
 import de.tum.informatics.www1.artemis.native_app.core.ui.date.hasPassed
+import de.tum.informatics.www1.artemis.native_app.core.ui.material.colors.ParticipationNotPossibleInfoMessageCardColors
 
 /**
  * This composable composes up to two buttons. The modifier parameter is applied to every button
@@ -96,43 +97,50 @@ fun ExerciseActionButtons(
     }
 
     if (templateStatus != null) {
-        if (exercise is TextExercise) {
-            if (latestParticipation?.initializationState == Participation.InitializationState.INITIALIZED) {
-                Button(
-                    modifier = modifier,
-                    onClick = {
-                        actions.onClickOpenTextExercise(
-                            latestParticipation.id ?: return@Button
+        when (exercise) {
+            is TextExercise -> {
+                if (latestParticipation?.initializationState == Participation.InitializationState.INITIALIZED) {
+                    Button(
+                        modifier = modifier,
+                        onClick = {
+                            actions.onClickOpenTextExercise(
+                                latestParticipation.id ?: return@Button
+                            )
+                        },
+                        enabled = !exercise.teamMode
+                    ) {
+                        Text(
+                            text = stringResource(id = R.string.exercise_actions_open_exercise_button)
                         )
-                    },
-                    enabled = !exercise.teamMode
-                ) {
-                    Text(
-                        text = stringResource(id = R.string.exercise_actions_open_exercise_button)
-                    )
+                    }
                 }
-            }
 
-            if (latestParticipation?.initializationState == Participation.InitializationState.FINISHED &&
-                (latestParticipation.results.isNullOrEmpty() || !showResult)
-            ) {
-                Button(
-                    modifier = modifier,
-                    onClick = {
-                        actions.onClickOpenTextExercise(
-                            latestParticipation.id ?: return@Button
-                        )
-                    },
-                    enabled = !exercise.teamMode
+                if (latestParticipation?.initializationState == Participation.InitializationState.FINISHED &&
+                    (latestParticipation.results.isNullOrEmpty() || !showResult)
                 ) {
-                    Text(
-                        text = stringResource(id = R.string.exercise_actions_view_submission_button)
-                    )
+                    Button(
+                        modifier = modifier,
+                        onClick = {
+                            actions.onClickOpenTextExercise(
+                                latestParticipation.id ?: return@Button
+                            )
+                        },
+                        enabled = !exercise.teamMode
+                    ) {
+                        Text(
+                            text = stringResource(id = R.string.exercise_actions_view_submission_button)
+                        )
+                    }
                 }
             }
-        } else {
-            Row(modifier=Modifier.padding(top=2.dp, bottom = 2.dp)) {
-                InfoMessageCard()
+            // TODO: The following code is temporarily disabled. See https://github.com/ls1intum/artemis-android/issues/107
+            //is QuizExercise -> {
+                // Do not show participation not possible info card for quiz exercises
+            //}
+            else -> {
+                Row(modifier=Modifier.padding(top=2.dp, bottom = 2.dp)) {
+                    ParticipationNotPossibleInfoMessageCard()
+                }
             }
         }
 
@@ -209,25 +217,29 @@ class BoundExerciseActions(
 
 
 @Composable
-fun InfoMessageCard() {
+fun ParticipationNotPossibleInfoMessageCard() {
     Box(
         modifier = Modifier
-            .border(width = 2.dp, color = Color.LightGray)
-            .background(Color(0xFFB3E5FC)) // Light sky blue background
-            .padding(10.dp)
+            .border(
+                width = 1.dp,
+                color = ParticipationNotPossibleInfoMessageCardColors.border,
+                shape = RoundedCornerShape(4.dp)
+            )
+            .background(ParticipationNotPossibleInfoMessageCardColors.background)
+            .padding(8.dp)
             .fillMaxWidth()
     ) {
         Row(verticalAlignment = Alignment.CenterVertically) {
             Icon(
-                imageVector = Icons.Filled.Info,
-                contentDescription = "Information",
+                imageVector = Icons.Outlined.Info,
+                contentDescription = null,
                 modifier = Modifier.padding(end = 8.dp),
-                tint = Color(0xFF0288D1) 
+                tint = ParticipationNotPossibleInfoMessageCardColors.text
             )
             Text(
                 text = stringResource(id = R.string.exercise_participation_not_possible),
                 fontSize = 16.sp,
-                color = Color.Black
+                color = ParticipationNotPossibleInfoMessageCardColors.text
             )
         }
     }

core/ui/src/main/kotlin/de/tum/informatics/www1/artemis/native_app/core/ui/exercise/ExerciseListItem.kt

@@ -29,9 +29,7 @@ import de.tum.informatics.www1.artemis.native_app.core.model.exercise.Exercise
 import de.tum.informatics.www1.artemis.native_app.core.ui.R
 import de.tum.informatics.www1.artemis.native_app.core.ui.date.getRelativeTime
 import de.tum.informatics.www1.artemis.native_app.core.ui.getWindowSizeClass
-import de.tum.informatics.www1.artemis.native_app.core.ui.material.easyColor
-import de.tum.informatics.www1.artemis.native_app.core.ui.material.hardColor
-import de.tum.informatics.www1.artemis.native_app.core.ui.material.mediumColor
+import de.tum.informatics.www1.artemis.native_app.core.ui.material.colors.DifficultyColors
 
 /**
  * Display a single exercise.
@@ -113,13 +111,13 @@ private fun DifficultyRectangle(modifier: Modifier, difficulty: Exercise.Difficu
         .background(
             color = when (difficulty) {
                 Exercise.Difficulty.EASY ->
-                    easyColor
+                    DifficultyColors.easy
 
                 Exercise.Difficulty.MEDIUM ->
-                    mediumColor
+                    DifficultyColors.medium
 
                 Exercise.Difficulty.HARD ->
-                    hardColor
+                    DifficultyColors.hard
             }
         )
     )

core/ui/src/main/kotlin/de/tum/informatics/www1/artemis/native_app/core/ui/material/colors/DifficultyColors.kt

@@ -0,0 +1,13 @@
+package de.tum.informatics.www1.artemis.native_app.core.ui.material.colors
+
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.graphics.Color
+
+object DifficultyColors {
+    val hard: Color
+        @Composable get() = Color(0xffdc3545)
+    val medium: Color
+        @Composable get() = Color(0xffffc107)
+    val easy: Color
+        @Composable get() = Color(0xff28a745)
+}

core/ui/src/main/kotlin/de/tum/informatics/www1/artemis/native_app/core/ui/material/colors/ParticipationNotPossibleInfoMessageCardColors.kt

@@ -0,0 +1,14 @@
+package de.tum.informatics.www1.artemis.native_app.core.ui.material.colors
+
+import androidx.compose.foundation.isSystemInDarkTheme
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.graphics.Color
+
+object ParticipationNotPossibleInfoMessageCardColors {
+    val background: Color
+        @Composable get() = if(isSystemInDarkTheme()) Color(0xFF062A30) else Color(0xFFD1ECF1)
+    val border: Color
+        @Composable get() = if(isSystemInDarkTheme()) Color(0xFF148EA1) else Color(0xFFA2DAE3)
+    val text: Color
+        @Composable get() = if(isSystemInDarkTheme()) Color(0xFF36CEE6) else Color(0xFF09414A)
+}

core/ui/src/main/kotlin/de/tum/informatics/www1/artemis/native_app/core/ui/material/text_colors.kt → core/ui/src/main/kotlin/de/tum/informatics/www1/artemis/native_app/core/ui/material/colors/text_colors.kt

@@ -1,4 +1,4 @@
-package de.tum.informatics.www1.artemis.native_app.core.ui.material
+package de.tum.informatics.www1.artemis.native_app.core.ui.material.colors
 
 import androidx.compose.material3.ColorScheme
 import androidx.compose.runtime.Composable

core/ui/src/main/res/values/exercise_strings.xml

@@ -39,8 +39,8 @@
 
     <!--  Exercise action buttons  -->
     <string name="exercise_actions_view_result_button">View result</string>
-    <string name="exercise_participation_not_possible">Participating this exercise is currently
-        not possible in the mobile app.</string>
+    <string name="exercise_participation_not_possible">Participating in this exercise is currently
+        not possible in the mobile app</string>
     <string name="exercise_actions_start_exercise_button">Start exercise</string>
     <string name="exercise_actions_open_exercise_button">Open exercise</string>
     <string name="exercise_actions_view_submission_button">View submission</string>