public void Update(IEnumerable<CodeFile> files) {
var filter = Filter;
var rule = new ExtractingRule(Enumerable.Repeat(filter, 1));
var fileList = files.ToList();
ExactMatch = fileList.Where(f => f.ReadOnly).All(
f => f.RangesEquals(filter.ElementName, rule.ExtractRange2Elements(f.Ast)));
Text = (ExactMatch ? "* " : "")
+ fileList.Select(f => f.Ast).Select(filter.CountRemovableTargets).Sum() + ": " + filter;
}
private bool CanApplyAll(ExtractingRule rule = null) {
rule = rule ?? InferRule();
return btnApply.Enabled && FreezedFiles.All(
f => f.RangesEquals(rule.ExtractRange2Elements(f.Ast)));
}