merge method Null safety

TreeViewTheme merge(
  1. TreeViewTheme other
)

Returns a new theme that matches this TreeView theme but with some values replaced by the non-null parameters of the given icon theme. If the given TreeViewTheme is null, simply returns this theme.

Implementation

TreeViewTheme merge(TreeViewTheme other) {
  return copyWith(
      colorScheme: other.colorScheme,
      levelPadding: other.levelPadding,
      iconPadding: other.iconPadding,
      iconTheme: other.iconTheme,
      expanderTheme: other.expanderTheme,
      labelStyle: other.labelStyle,
      dense: other.dense,
      verticalSpacing: other.verticalSpacing,
      horizontalSpacing: other.horizontalSpacing,
      parentLabelStyle: other.parentLabelStyle,
      labelOverflow: other.labelOverflow,
      parentLabelOverflow: other.parentLabelOverflow);
}