Added back safe mode notice

app/src/main/java/com/topjohnwu/magisk/model/entity/recycler/ModuleRvItem.kt

@@ -81,6 +81,19 @@ class RepoRvItem(val item: Repo) : ComparableRvItem<RepoRvItem>() {
     override fun itemSameAs(other: RepoRvItem): Boolean = item.id == other.item.id
 }
 
+object SafeModeNotice : ComparableRvItem<SafeModeNotice>() {
+    override val layoutRes = R.layout.item_safe_mode_notice
+
+    override fun onBindingBound(binding: ViewDataBinding) {
+        super.onBindingBound(binding)
+        val params = binding.root.layoutParams as? StaggeredGridLayoutManager.LayoutParams
+        params?.isFullSpan = true
+    }
+
+    override fun contentSameAs(other: SafeModeNotice) = this == other
+    override fun itemSameAs(other: SafeModeNotice) = this === other
+}
+
 object InstallModule : ComparableRvItem<InstallModule>() {
     override val layoutRes = R.layout.item_module_download
 

app/src/main/java/com/topjohnwu/magisk/redesign/module/ModuleViewModel.kt

@@ -15,10 +15,7 @@ import com.topjohnwu.magisk.model.download.RemoteFileService
 import com.topjohnwu.magisk.model.entity.internal.DownloadSubject
 import com.topjohnwu.magisk.model.entity.module.Module
 import com.topjohnwu.magisk.model.entity.module.Repo
-import com.topjohnwu.magisk.model.entity.recycler.InstallModule
+import com.topjohnwu.magisk.model.entity.recycler.*
-import com.topjohnwu.magisk.model.entity.recycler.ModuleItem
-import com.topjohnwu.magisk.model.entity.recycler.RepoItem
-import com.topjohnwu.magisk.model.entity.recycler.SectionTitle
 import com.topjohnwu.magisk.model.events.InstallExternalModuleEvent
 import com.topjohnwu.magisk.model.events.OpenChangelogEvent
 import com.topjohnwu.magisk.model.events.dialog.ModuleInstallDialog
@@ -284,12 +281,17 @@ class ModuleViewModel(
         active: List<ModuleItem> = itemsInstalled,
         updatable: List<RepoItem.Update> = itemsUpdatable,
         remote: List<RepoItem.Remote> = itemsRemote
-    ) = (active + InstallModule).prependIfNotEmpty { sectionActive } +
+    ) = (active + InstallModule)
+        .prependIfNotEmpty { sectionActive }
+        .prependIf(Config.coreOnly) { SafeModeNotice } +
             updatable.prependIfNotEmpty { sectionUpdate } +
             remote.prependIfNotEmpty { sectionRemote }
 
+    private fun <T> List<T>.prependIf(condition: Boolean, item: () -> T) =
+        if (condition) listOf(item()) + this else this
+
     private fun <T> List<T>.prependIfNotEmpty(item: () -> T) =
-        if (isNotEmpty()) listOf(item()) + this else this
+        prependIf(isNotEmpty(), item)
 
 }
 

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

@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+
+    <data>
+
+        <variable
+            name="item"
+            type="com.topjohnwu.magisk.model.entity.recycler.SafeModeNotice" />
+
+    </data>
+
+    <com.google.android.material.card.MaterialCardView
+        style="?styleCardNormal"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        app:cardBackgroundColor="?colorError">
+
+        <androidx.appcompat.widget.AppCompatTextView
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:gravity="center"
+            android:padding="@dimen/l1"
+            android:text="@string/module_safe_mode_message"
+            android:textAppearance="?appearanceTextCaptionOnPrimary"
+            android:textStyle="bold" />
+
+    </com.google.android.material.card.MaterialCardView>
+
+</layout>