/// <summary>
/// 获取CSS Selector(当包含上下文的时候调用此方法)
/// http://stackoverflow.com/questions/3390396/how-to-check-for-undefined-in-javascript
/// </summary>
/// <param name="element"></param>
public string GetContextSelector(mshtml.IHTMLElement context, mshtml.IHTMLElement element)
{
SetContextSelector(context);
var originalId = element.id;
if (string.IsNullOrEmpty(originalId))
{
var id = "__" + IEUtils.IEVariableNameHelper.CreateVariableName();
element.id = id;
}
mshtml.IHTMLWindow2 parentWindow = ((IHTMLDocument2)(element.document)).parentWindow as mshtml.IHTMLWindow2;
IEUtils.RunScript(ScriptLoader.GetJquerySelector(""), parentWindow);
StringBuilder sb = new StringBuilder();
sb.Append(string.Format("var el = $jq('#{0}');", element.id));
sb.AppendLine();
sb.Append("if(typeof __context == 'undefined'){");
sb.AppendLine();
sb.Append("__context = '';");
sb.AppendLine();
sb.Append("}");
sb.AppendLine();
sb.Append(" var selector = el.getCssPath(__context);");
sb.AppendLine();
sb.Append("__context = 'undefined';");
sb.Append("return selector");
object result = JS.FunEval(AppContext.Current.Window, sb.ToString());
element.id = originalId;
return(result == null ? "" : result.ToString());
}
/// <summary>
/// 获取CSS Selector(当包含上下文的时候调用此方法)
/// http://stackoverflow.com/questions/3390396/how-to-check-for-undefined-in-javascript
/// </summary>
/// <param name="element"></param>
public void SetSelector(mshtml.IHTMLElement element)
{
var originalId = element.id;
if (string.IsNullOrEmpty(originalId))
{
var id = "__" + IEUtils.IEVariableNameHelper.CreateVariableName();
element.id = id;
}
mshtml.IHTMLWindow2 parentWindow = ((IHTMLDocument2)(element.document)).parentWindow as mshtml.IHTMLWindow2;
IEUtils.RunScript(ScriptLoader.GetJquerySelector(""), parentWindow);
StringBuilder sb = new StringBuilder();
sb.Append(string.Format("var el = $jq('#{0}');", element.id));
sb.AppendLine();
sb.Append("if(typeof __context == 'undefined'){");
sb.AppendLine();
sb.Append("__context = '';");
sb.AppendLine();
sb.Append("}");
sb.AppendLine();
sb.Append(" var selector = el.getCssPath(__context);");
sb.AppendLine();
sb.Append("el.attr('__selector', selector);");
//sb.Append("alert(el.attr('__selector'));");
//sb.AppendLine();
IEUtils.RunScript(sb.ToString(), parentWindow);
element.id = originalId;
}