From b5a700276a00f5b630d35d1b902bd624905c6c01 Mon Sep 17 00:00:00 2001
From: Ivan Iskandar <12537387+ivaniskandar@users.noreply.github.com>
Date: Mon, 24 May 2021 20:10:13 +0700
Subject: [PATCH] Remove top margin of PreferenceCategory if no title set
 (#5168)

---
 .../util/preference/PreferenceDSL.kt          |  3 ++-
 .../AdaptiveTitlePreferenceCategory.kt        | 22 +++++++++++++++++++
 2 files changed, 24 insertions(+), 1 deletion(-)
 create mode 100644 app/src/main/java/eu/kanade/tachiyomi/widget/preference/AdaptiveTitlePreferenceCategory.kt

diff --git a/app/src/main/java/eu/kanade/tachiyomi/util/preference/PreferenceDSL.kt b/app/src/main/java/eu/kanade/tachiyomi/util/preference/PreferenceDSL.kt
index 148b91ae2..03a74b48d 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/util/preference/PreferenceDSL.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/util/preference/PreferenceDSL.kt
@@ -16,6 +16,7 @@ import androidx.preference.PreferenceScreen
 import androidx.preference.SwitchPreferenceCompat
 import eu.kanade.tachiyomi.R
 import eu.kanade.tachiyomi.util.system.getResourceColor
+import eu.kanade.tachiyomi.widget.preference.AdaptiveTitlePreferenceCategory
 import eu.kanade.tachiyomi.widget.preference.IntListPreference
 import eu.kanade.tachiyomi.widget.preference.SwitchPreferenceCategory
 import eu.kanade.tachiyomi.widget.preference.SwitchSettingsPreference
@@ -77,7 +78,7 @@ inline fun PreferenceGroup.multiSelectListPreference(block: (@DSL MultiSelectLis
 }
 
 inline fun PreferenceScreen.preferenceCategory(block: (@DSL PreferenceCategory).() -> Unit): PreferenceCategory {
-    return addThenInit(PreferenceCategory(context), block)
+    return addThenInit(AdaptiveTitlePreferenceCategory(context), block)
 }
 
 inline fun PreferenceScreen.preferenceScreen(block: (@DSL PreferenceScreen).() -> Unit): PreferenceScreen {
diff --git a/app/src/main/java/eu/kanade/tachiyomi/widget/preference/AdaptiveTitlePreferenceCategory.kt b/app/src/main/java/eu/kanade/tachiyomi/widget/preference/AdaptiveTitlePreferenceCategory.kt
new file mode 100644
index 000000000..d0448549d
--- /dev/null
+++ b/app/src/main/java/eu/kanade/tachiyomi/widget/preference/AdaptiveTitlePreferenceCategory.kt
@@ -0,0 +1,22 @@
+package eu.kanade.tachiyomi.widget.preference
+
+import android.content.Context
+import androidx.core.view.updateLayoutParams
+import androidx.preference.PreferenceCategory
+import androidx.preference.PreferenceViewHolder
+import androidx.recyclerview.widget.RecyclerView
+
+/**
+ * PreferenceCategory that hides the title placeholder layout if the title is unset
+ */
+class AdaptiveTitlePreferenceCategory(context: Context) : PreferenceCategory(context) {
+    override fun onBindViewHolder(holder: PreferenceViewHolder) {
+        super.onBindViewHolder(holder)
+        if (title.isNullOrBlank()) {
+            holder.itemView.updateLayoutParams<RecyclerView.LayoutParams> {
+                height = 0
+                topMargin = 0
+            }
+        }
+    }
+}