57 lines
1.7 KiB
C#
57 lines
1.7 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Text.RegularExpressions;
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using System.Threading.Tasks;
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namespace StyleSheetsParser
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{
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public class CssSelector:CssRule,ICssRulesContainer
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{
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public CssSelector(string name, IList<CssAttribute> attributes)
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: base(name)
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{
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Attributes = attributes;
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}
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public IList<CssAttribute> Attributes { get; private set; }
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protected override string GetCssString()
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{
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if (Attributes == null || Attributes.Count == 0) return string.Empty;
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StringBuilder sb = new StringBuilder();
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foreach (var attr in Attributes)
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{
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string s = attr != null ? attr.ToString() : null;
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if (s != "" && s != null && s != string.Empty)
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{
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sb.AppendFormat("{0}{1}", sb.Length > 0 ? ";" : null, attr);
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}
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}
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if (sb.Length > 0)
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{
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sb.Insert(0, Name + "{");
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sb.Append("}");
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}
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return sb.ToString();
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}
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bool? _isValid;
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public override bool IsValid {
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get {
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if (!_isValid.HasValue)
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{
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//选择器必须是以下字符开始，否则视为为无效的
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_isValid = Regex.IsMatch(Name, @"^[\*\[#\.a-z]", RegexOptions.IgnoreCase);
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}
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return _isValid.Value; }
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set { _isValid = value; } }
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public IEnumerable<CssRule> Selectors
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{
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get { return Attributes; }
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}
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}
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}
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