Clarify previous contents in edited logs

app/src/main/java/se/ajpanton/notificationlog/ViewLogsFragment.kt

@@ -12,6 +12,7 @@ import android.content.ComponentName
 import android.app.NotificationManager
 import android.text.TextPaint
 import android.text.TextUtils
+import android.view.Gravity
 import android.view.View
 import android.widget.ImageView
 import android.widget.LinearLayout
@@ -280,10 +281,10 @@ class ViewLogsFragment : Fragment(R.layout.fragment_view_logs) {
         }
         addView(message)
         if (expanded && row.entry.action == NotificationAction.EDITED && !row.entry.previousContents.isNullOrEmpty()) {
+            addView(previousDivider())
             addView(TextView(context).apply {
-                text = "Previous: ${row.entry.previousContents}"
+                text = row.entry.previousContents
                 setLineSpacing(0f, 1f)
-                setPadding(0, dp(4), 0, 0)
             })
         }
         if (expanded && row.entry.imageId != null) {
@@ -316,6 +317,24 @@ class ViewLogsFragment : Fragment(R.layout.fragment_view_logs) {
         setOnLongClickListener { showDeleteDialog(row.entry.id) }
     }
 
+    private fun previousDivider(): LinearLayout = LinearLayout(requireContext()).apply {
+        gravity = Gravity.CENTER_VERTICAL
+        setPadding(0, dp(8), 0, dp(4))
+        fun line() = View(context).apply {
+            setBackgroundColor(ContextCompat.getColor(context, R.color.log_row_separator))
+            layoutParams = LinearLayout.LayoutParams(0, dp(1), 1f)
+        }
+        addView(line())
+        addView(TextView(context).apply {
+            text = "Previous"
+            textSize = 12f
+            setTextColor(ContextCompat.getColor(context, R.color.on_surface))
+            setBackgroundColor(ContextCompat.getColor(context, R.color.window_background))
+            setPadding(dp(8), 0, dp(8), 0)
+        })
+        addView(line())
+    }
+
     private fun metadataValues(entry: NotificationLogEntry, settings: LogViewSettings): List<MetadataValue> = buildList {
         if (LogField.TIMESTAMP in settings.visibleFields) add(MetadataValue(timestamp(entry.recordedAtEpochMillis, settings, entry.eventTimeZoneId), 12f, isTimestamp = true))
         if (LogField.APP_NAME in settings.visibleFields) add(MetadataValue(entry.appName, 15f, indented = true, bold = true))