fix: correct scroll position when insert text on Android

android/src/main/java/com/swmansion/enriched/EnrichedStyleManipulator.kt

@@ -10,7 +10,7 @@ import com.swmansion.enriched.styles.ParagraphStyles
 import com.swmansion.enriched.styles.ParametrizedStyles
 
 class EnrichedStyleManipulator(
-  val view: EnrichedTextInputView,
+  private val view: EnrichedTextInputView,
 ) {
   val inlineStyles: InlineStyles = InlineStyles(view)
   val paragraphStyles: ParagraphStyles = ParagraphStyles(view)
@@ -29,26 +29,53 @@ class EnrichedStyleManipulator(
     name: TextStyle,
     start: Int,
     end: Int,
-  ): Boolean =
-    when (EnrichedSpans.getStyleGroup(name)) {
-      TextStyleGroup.INLINE -> inlineStyles.removeStyle(name, start, end)
-      TextStyleGroup.PARAGRAPH -> paragraphStyles.removeStyle(name, start, end)
-      TextStyleGroup.LIST -> listStyles.removeStyle(name, start, end)
-      TextStyleGroup.PARAMETRIZED -> parametrizedStyles.removeStyle(name, start, end)
-      null -> false
+  ): Boolean {
+    return when (EnrichedSpans.getStyleGroup(name)) {
+      TextStyleGroup.INLINE -> {
+        inlineStyles.removeStyle(name, start, end)
+      }
+
+      TextStyleGroup.PARAGRAPH -> {
+        val removed = paragraphStyles.removeStyle(name, start, end)
+        view.correctScrollPositionIfNeeded()
+
+        return removed
+      }
+
+      TextStyleGroup.LIST -> {
+        listStyles.removeStyle(name, start, end)
+      }
+
+      TextStyleGroup.PARAMETRIZED -> {
+        parametrizedStyles.removeStyle(name, start, end)
+      }
+
+      null -> {
+        false
+      }
     }
+  }
 
   internal fun toggleStyle(name: TextStyle) {
     when (EnrichedSpans.getStyleGroup(name)) {
-      TextStyleGroup.INLINE -> inlineStyles.toggleStyle(name)
+      TextStyleGroup.INLINE -> {
+        inlineStyles.toggleStyle(name)
+      }
 
-      TextStyleGroup.PARAGRAPH -> paragraphStyles.toggleStyle(name)
+      TextStyleGroup.PARAGRAPH -> {
+        paragraphStyles.toggleStyle(name)
+        view.correctScrollPositionIfNeeded()
+      }
 
-      TextStyleGroup.LIST -> listStyles.toggleStyle(name)
+      TextStyleGroup.LIST -> {
+        listStyles.toggleStyle(name)
+      }
 
       TextStyleGroup.PARAMETRIZED,
       null,
-      -> Log.w("EnrichedTextInputView", "Unknown style: $name")
+      -> {
+        Log.w("EnrichedTextInputView", "Unknown style: $name")
+      }
     }
   }
 

android/src/main/java/com/swmansion/enriched/EnrichedTextInputView.kt

@@ -280,9 +280,9 @@ class EnrichedTextInputView : AppCompatEditText {
     return super.onTouchEvent(event)
   }
 
-  override fun canScrollVertically(direction: Int): Boolean = scrollEnabled
+  override fun canScrollVertically(direction: Int): Boolean = scrollEnabled && super.canScrollVertically(direction)
 
-  override fun canScrollHorizontally(direction: Int): Boolean = scrollEnabled
+  override fun canScrollHorizontally(direction: Int): Boolean = scrollEnabled && super.canScrollHorizontally(direction)
 
   override fun onScrollChanged(
     horiz: Int,
@@ -653,7 +653,7 @@ class EnrichedTextInputView : AppCompatEditText {
   // we need to override isLayoutRequested to force EditText to scroll to the end of the new text
   // immediately.
   // Ivan Ihnatsiuk: let android calculate layout to avoid jumping behavior when we insert a new line.
-//  override fun isLayoutRequested(): Boolean = false
+  //  override fun isLayoutRequested(): Boolean = false
 
   fun afterUpdateTransaction() {
     updateTypeface()
@@ -740,6 +740,14 @@ class EnrichedTextInputView : AppCompatEditText {
     dispatcher?.dispatchEvent(event)
   }
 
+  fun correctScrollPositionIfNeeded() {
+    if (!scrollEnabled) {
+      return
+    }
+
+    forceScrollToSelection()
+  }
+
   private fun forceScrollToSelection() {
     val textLayout = layout ?: return
     val cursorOffset = selectionStart

android/src/main/java/com/swmansion/enriched/watchers/EnrichedTextWatcher.kt

@@ -70,6 +70,7 @@ class EnrichedTextWatcher(
         }
       }
     }
+    view.correctScrollPositionIfNeeded()
   }
 
   private fun applyStyles(s: Editable) {