Added expand all/collapse all categories in filter sheet

app/src/main/java/eu/kanade/tachiyomi/ui/library/LibraryController.kt

@@ -412,6 +412,7 @@ class LibraryController(
                 FilterBottomSheet.ACTION_FILTER -> onFilterChanged()
                 FilterBottomSheet.ACTION_HIDE_FILTER_TIP -> showFilterTip()
                 FilterBottomSheet.ACTION_DISPLAY -> DisplayBottomSheet(this).show()
+                FilterBottomSheet.ACTION_EXPAND_COLLAPSE_ALL -> presenter.toggleAllCategoryVisibility()
             }
         }
 
@@ -638,6 +639,7 @@ class LibraryController(
         category_hopper_frame.visibleIf(!singleCategory)
         adapter.isLongPressDragEnabled = canDrag()
         category_recycler.setCategories(presenter.categories)
+        filter_bottom_sheet.setExpandText(preferences.collapsedCategories().getOrDefault().isNotEmpty())
         setActiveCategory()
         if (onRoot) {
             activity?.toolbar?.setOnClickListener {

app/src/main/java/eu/kanade/tachiyomi/ui/library/LibraryPresenter.kt

@@ -789,6 +789,15 @@ class LibraryPresenter(
         getLibrary()
     }
 
+    fun toggleAllCategoryVisibility() {
+        if (preferences.collapsedCategories().getOrDefault().isEmpty()) {
+            preferences.collapsedCategories().set(categories.map { it.id.toString() }.toMutableSet())
+        } else {
+            preferences.collapsedCategories().set(mutableSetOf())
+        }
+        getLibrary()
+    }
+
     companion object {
         private var lastLibraryItems: List<LibraryItem>? = null
         private var lastCategories: List<Category>? = null

app/src/main/java/eu/kanade/tachiyomi/ui/library/filter/FilterBottomSheet.kt

@@ -98,11 +98,8 @@ class FilterBottomSheet @JvmOverloads constructor(context: Context, attrs: Attri
         if (preferences.hideFiltersAtStart().getOrDefault()) {
             sheetBehavior?.hide()
         }
-        hide_filters.isChecked = preferences.hideFiltersAtStart().getOrDefault()
+        expand_categories.setOnClickListener {
-        hide_filters.setOnCheckedChangeListener { _, isChecked ->
+            onGroupClicked(ACTION_EXPAND_COLLAPSE_ALL)
-            preferences.hideFiltersAtStart().set(isChecked)
-            if (isChecked)
-                onGroupClicked(ACTION_HIDE_FILTER_TIP)
         }
         view_options.setOnClickListener {
             onGroupClicked(ACTION_DISPLAY)
@@ -127,6 +124,23 @@ class FilterBottomSheet @JvmOverloads constructor(context: Context, attrs: Attri
         clearButton.setOnClickListener { clearFilters() }
     }
 
+    fun setExpandText(expand: Boolean) {
+        expand_categories.setText(
+            if (expand) {
+                R.string.expand_all_categories
+            } else {
+                R.string.collapse_all_categories
+            }
+        )
+        expand_categories.setIconResource(
+            if (expand) {
+                R.drawable.ic_expand_less_24dp
+            } else {
+                R.drawable.ic_expand_more_24dp
+            }
+        )
+    }
+
     private fun stateChanged(state: Int) {
         val shadow = ((pager?.parent as? ViewGroup)?.findViewById(R.id.shadow) as? View)
         if (state == BottomSheetBehavior.STATE_COLLAPSED) {
@@ -379,6 +393,7 @@ class FilterBottomSheet @JvmOverloads constructor(context: Context, attrs: Attri
         const val ACTION_FILTER = 1
         const val ACTION_HIDE_FILTER_TIP = 2
         const val ACTION_DISPLAY = 3
+        const val ACTION_EXPAND_COLLAPSE_ALL = 4
 
         const val STATE_IGNORE = 0
         const val STATE_INCLUDE = 1

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

@@ -6,9 +6,9 @@
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
     android:background="@drawable/bottom_sheet_rounded_background"
+    android:elevation="12dp"
     android:orientation="vertical"
     app:behavior_peekHeight="60dp"
-    android:elevation="12dp"
     app:layout_behavior="com.google.android.material.bottomsheet.BottomSheetBehavior">
 
     <androidx.constraintlayout.widget.ConstraintLayout
@@ -76,24 +76,28 @@
                     android:layout_marginEnd="20dp"
                     android:text="@string/hide_categories" />
 
+
+                <com.google.android.material.button.MaterialButton
+                    android:id="@+id/expand_categories"
+                    style="@style/Theme.Widget.Button.TextButton"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="@string/expand_all_categories"
+                    android:textColor="?android:attr/textColorPrimary"
+                    app:icon="@drawable/ic_expand_more_24dp"
+                    app:iconTint="?android:attr/textColorPrimary" />
+            </LinearLayout>
+
             <com.google.android.material.button.MaterialButton
                 android:id="@+id/view_options"
                 style="@style/Theme.Widget.Button.TextButton"
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
+                android:layout_marginStart="10dp"
                 android:text="@string/display_options"
                 android:textColor="?android:attr/textColorPrimary"
                 app:icon="@drawable/ic_tune_white_24dp"
                 app:iconTint="?android:attr/textColorPrimary" />
-
-                <com.google.android.material.checkbox.MaterialCheckBox
-                    android:id="@+id/hide_filters"
-                    android:layout_width="wrap_content"
-                    android:layout_height="wrap_content"
-                    android:layout_marginEnd="20dp"
-                    android:text="@string/start_with_filters_hidden"
-                    android:visibility="gone" />
-            </LinearLayout>
         </LinearLayout>
 
         <ImageView

app/src/main/res/values/strings.xml

@@ -115,6 +115,8 @@
         library from the browse tab.</string>
     <string name="no_matches_for_filters">No matches found for your current filters</string>
     <string name="show_all_categories">Show all categories</string>
+    <string name="expand_all_categories">Expand all categories</string>
+    <string name="collapse_all_categories">Collapse all categories</string>
 
     <!-- Library Sort -->
     <string name="sort_by_">Sort by: %1$s</string>