findInnerPlatformTextField static method

Finder findInnerPlatformTextField([ Finder? superTextFieldFinder ])

Finds and returns the platform textfield within a SuperTextField.

By default, this method expects a single SuperTextField in the widget tree and finds it byType. To specify one SuperTextField among many, pass a superTextFieldFinder.

Implementation

static Finder findInnerPlatformTextField([Finder? superTextFieldFinder]) {
  final rootFieldFinder = superTextFieldFinder ?? find.byType(SuperTextField);

  final rootMatches = rootFieldFinder.evaluate();
  if (rootMatches.isEmpty) {
    throw Exception("Couldn't find a super text field variant with the given finder: $rootFieldFinder");
  }
  if (rootMatches.length > 1) {
    throw Exception("Found more than 1 super text field match with finder: $rootFieldFinder");
  }

  final rootMatch = rootMatches.single.widget;
  if (rootMatch is! SuperTextField) {
    // The match isn't a generic SuperTextField. Assume that it's a platform
    // specific super text field, which is what we're looking for. Return it.
    return rootFieldFinder;
  }

  final desktopFieldCandidates =
      find.descendant(of: rootFieldFinder, matching: find.byType(SuperDesktopTextField)).evaluate();
  if (desktopFieldCandidates.isNotEmpty) {
    return find.descendant(of: rootFieldFinder, matching: find.byType(SuperDesktopTextField));
  }

  final androidFieldCandidates =
      find.descendant(of: rootFieldFinder, matching: find.byType(SuperAndroidTextField)).evaluate();
  if (androidFieldCandidates.isNotEmpty) {
    return find.descendant(of: rootFieldFinder, matching: find.byType(SuperAndroidTextField));
  }

  final iosFieldCandidates =
      find.descendant(of: rootFieldFinder, matching: find.byType(SuperIOSTextField)).evaluate();
  if (iosFieldCandidates.isNotEmpty) {
    return find.descendant(of: rootFieldFinder, matching: find.byType(SuperIOSTextField));
  }

  throw Exception(
      "Couldn't find the platform-specific super text field within the root SuperTextField. Root finder: $rootFieldFinder");
}