feat: non ideal state composable

Signed-off-by: Infi <infi@infi.sh>

app/src/main/java/chat/revolt/components/generic/NonIdealState.kt

@@ -0,0 +1,118 @@
+package chat.revolt.components.generic
+
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.Close
+import androidx.compose.material.icons.filled.Star
+import androidx.compose.material.icons.filled.Warning
+import androidx.compose.material3.Button
+import androidx.compose.material3.Icon
+import androidx.compose.material3.LocalContentColor
+import androidx.compose.material3.LocalTextStyle
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.CompositionLocalProvider
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.unit.dp
+
+private val NoneLambda = @Composable { throw UnsupportedOperationException() }
+@Composable
+fun NonIdealState(
+    icon: @Composable () -> Unit,
+    title: @Composable () -> Unit,
+    description: @Composable () -> Unit = NoneLambda,
+    actions: @Composable () -> Unit = NoneLambda
+) {
+    Column(
+        verticalArrangement = Arrangement.spacedBy(8.dp, Alignment.CenterVertically),
+        horizontalAlignment = Alignment.CenterHorizontally,
+        modifier = Modifier
+            .fillMaxWidth()
+            .padding(vertical = 32.dp)
+    ) {
+        CompositionLocalProvider(LocalContentColor provides MaterialTheme.colorScheme.primary) {
+            icon()
+        }
+
+        if (description != NoneLambda) Spacer(modifier = Modifier.height(16.dp))
+
+        CompositionLocalProvider(LocalTextStyle provides MaterialTheme.typography.headlineMedium) {
+            title()
+        }
+
+        if (description != NoneLambda) {
+            CompositionLocalProvider(LocalTextStyle provides MaterialTheme.typography.bodyMedium) {
+                description()
+            }
+        }
+
+        if (actions != NoneLambda) {
+            Spacer(modifier = Modifier.height(16.dp))
+
+            Row(
+                verticalAlignment = Alignment.CenterVertically,
+                horizontalArrangement = Arrangement.spacedBy(8.dp, Alignment.CenterHorizontally),
+            ) {
+                actions()
+            }
+        }
+    }
+}
+
+@Preview(showBackground = true)
+@Composable
+fun NonIdealStatePreview() {
+    NonIdealState(
+        icon = {
+            Icon(
+                imageVector = Icons.Default.Star,
+                contentDescription = null
+            )
+        },
+        title = { Text("Channel") },
+        description = { Text("You are not in any channels.") },
+        actions = {
+            Button(onClick = {}) {
+                Text("Create a channel")
+            }
+        }
+    )
+}
+
+@Preview(showBackground = true)
+@Composable
+fun NonIdealStatePreviewNoActions() {
+    NonIdealState(
+        icon = {
+            Icon(
+                imageVector = Icons.Default.Close,
+                contentDescription = null
+            )
+        },
+        title = { Text("Error") },
+        description = { Text("Could not load channels.") },
+    )
+}
+
+@Preview(showBackground = true)
+@Composable
+fun NonIdealStatePreviewNoDescription() {
+    NonIdealState(
+        icon = {
+            Icon(
+                imageVector = Icons.Default.Warning,
+                contentDescription = null
+            )
+        },
+        title = { Text("No channels") },
+    )
+}