fix: clear spans on paste (#152)

* fix: clear spans on paste

See: https://github.com/FossifyOrg/Notes/issues/150

* style: add empty line

app/src/main/kotlin/org/fossify/notes/extensions/EditText.kt

@@ -0,0 +1,13 @@
+package org.fossify.notes.extensions
+
+import android.text.InputFilter
+import android.text.Spanned
+import org.fossify.commons.views.MyEditText
+
+fun MyEditText.enforcePlainText() {
+    val stripSpans = InputFilter { source, start, end, _, _, _ ->
+        val sub = source.subSequence(start, end)
+        if (sub is Spanned) sub.toString() else sub
+    }
+    filters = (filters ?: emptyArray()) + stripSpans
+}

app/src/main/kotlin/org/fossify/notes/fragments/TextFragment.kt

@@ -27,6 +27,7 @@ import org.fossify.notes.databinding.FragmentTextBinding
 import org.fossify.notes.databinding.NoteViewHorizScrollableBinding
 import org.fossify.notes.databinding.NoteViewStaticBinding
 import org.fossify.notes.extensions.config
+import org.fossify.notes.extensions.enforcePlainText
 import org.fossify.notes.extensions.getPercentageFontSize
 import org.fossify.notes.extensions.updateWidgets
 import org.fossify.notes.helpers.MyMovementMethod
@@ -67,6 +68,8 @@ class TextFragment : NoteFragment() {
                 noteEditText = textNoteView
             }
         }
+
+        noteEditText.enforcePlainText()
         if (config!!.clickableLinks) {
             noteEditText.apply {
                 linksClickable = true