Issue #5901 - fixed placeholders clearing on theem change in customSe…

…archVC (#6236)

user input stays on theme change

address extra lines feedback

Client/Frontend/Settings/CustomSearchViewController.swift

@@ -135,6 +135,7 @@ class CustomSearchViewController: SettingsTableViewController {
             }
             self.engineTitle = title
         })
+        titleField.textField.text = engineTitle
         titleField.textField.accessibilityIdentifier = "customEngineTitle"
 
         let urlField = CustomSearchEngineTextView(placeholder: Strings.SettingsAddCustomEngineURLPlaceholder, height: 133,
@@ -146,6 +147,7 @@ class CustomSearchViewController: SettingsTableViewController {
         })
 
         urlField.textField.autocapitalizationType = .none
+        urlField.textField.text = urlString
         urlField.textField.accessibilityIdentifier = "customEngineUrl"
 
         let settings: [SettingSection] = [
@@ -172,6 +174,10 @@ class CustomSearchEngineTextView: Setting, UITextViewDelegate {
 
     fileprivate let Padding: CGFloat = 8
     fileprivate let TextLabelHeight: CGFloat = 44
+    fileprivate var TextLabelWidth: CGFloat {
+        let width = textField.frame.width == 0 ? 360 : textField.frame.width
+        return width
+    }
     fileprivate var TextFieldHeight: CGFloat = 44
 
     fileprivate let defaultValue: String?
@@ -203,7 +209,8 @@ class CustomSearchEngineTextView: Setting, UITextViewDelegate {
         placeholderLabel.adjustsFontSizeToFitWidth = true
         placeholderLabel.textColor = UIColor.theme.general.settingsTextPlaceholder ?? UIColor(red: 0.0, green: 0.0, blue: 0.0980392, alpha: 0.22)
         placeholderLabel.text = placeholder
-        placeholderLabel.frame = CGRect(width: textField.frame.width, height: TextLabelHeight)
+        placeholderLabel.isHidden = !textField.text.isEmpty
+        placeholderLabel.frame = CGRect(width: TextLabelWidth, height: TextLabelHeight)
         textField.font = placeholderLabel.font
 
         textField.textContainer.lineFragmentPadding = 0