Added basic preferences to settings

app/src/main/java/com/topjohnwu/magisk/model/events/ViewEvents.kt

@@ -85,4 +85,14 @@ class BackPressEvent : ViewEvent(), ActivityExecutor {
     }
 }
 
-class DieEvent : ViewEvent()
+class DieEvent : ViewEvent(), ActivityExecutor {
+    override fun invoke(activity: AppCompatActivity) {
+        activity.finish()
+    }
+}
+
+class RecreateEvent : ViewEvent(), ActivityExecutor {
+    override fun invoke(activity: AppCompatActivity) {
+        activity.recreate()
+    }
+}

app/src/main/java/com/topjohnwu/magisk/redesign/settings/SettingsFragment.kt

@@ -1,5 +1,6 @@
 package com.topjohnwu.magisk.redesign.settings
 
+import android.graphics.Insets
 import com.topjohnwu.magisk.R
 import com.topjohnwu.magisk.databinding.FragmentSettingsMd2Binding
 import com.topjohnwu.magisk.redesign.compat.CompatFragment
@@ -10,4 +11,12 @@ class SettingsFragment : CompatFragment<SettingsViewModel, FragmentSettingsMd2Bi
     override val layoutRes = R.layout.fragment_settings_md2
     override val viewModel by viewModel<SettingsViewModel>()
 
+    override fun consumeSystemWindowInsets(insets: Insets) = insets
+
+    override fun onStart() {
+        super.onStart()
+
+        activity.title = resources.getString(R.string.section_settings)
+    }
+
 }

app/src/main/java/com/topjohnwu/magisk/redesign/settings/SettingsViewModel.kt

@@ -1,5 +1,30 @@
 package com.topjohnwu.magisk.redesign.settings
 
+import com.topjohnwu.magisk.Config
+import com.topjohnwu.magisk.extensions.addOnPropertyChangedCallback
+import com.topjohnwu.magisk.extensions.toggle
+import com.topjohnwu.magisk.model.events.DieEvent
+import com.topjohnwu.magisk.model.events.RecreateEvent
 import com.topjohnwu.magisk.redesign.compat.CompatViewModel
+import com.topjohnwu.magisk.utils.KObservableField
 
-class SettingsViewModel : CompatViewModel()
+class SettingsViewModel : CompatViewModel() {
+
+    val redesign = KObservableField(Config.redesign)
+    val darkTheme = KObservableField(Config.darkTheme)
+
+    init {
+        //todo make observable preference
+        redesign.addOnPropertyChangedCallback {
+            Config.redesign = redesign.value
+            DieEvent().publish()
+        }
+        darkTheme.addOnPropertyChangedCallback {
+            Config.darkTheme = darkTheme.value
+            RecreateEvent().publish()
+        }
+    }
+
+    fun toggle(item: KObservableField<Boolean>) = item.toggle()
+
+}