public void Mark(IHtmlElement element)
{
Contract.RequiresNotNull(element, "element");
if (Element != null)
{
// unmark first - maybe it was marked with another color before
Unmark();
}
Element = element;
var markerCountAttr = Element.GetAttribute(Attribute_MarkerCount);
if (string.IsNullOrEmpty(markerCountAttr))
{
Element.SetAttribute(Attribute_OrigStyle, Element.Style);
myMarkerIdx = 0;
}
else
{
myMarkerIdx = int.Parse(markerCountAttr);
}
var markupStyle = string.Format(";color:black;background-color:{0}", ColorTranslator.ToHtml(Color));
Element.SetAttribute(Attribute_Marker + myMarkerIdx, markupStyle);
Element.SetAttribute(Attribute_MarkerCount, (myMarkerIdx + 1).ToString());
Element.Style = Element.GetAttribute(Attribute_OrigStyle) + markupStyle;
}
/// <summary>
/// Submits a HTML form to the server
/// </summary>
/// <param name="client">HTTP client to use for submitting the form.</param>
/// <param name="form">HTML Form to submit.</param>
/// <param name="submitButton">Submit button to use for submitting the form.</param>
/// <returns>Returns the HTTP response received after submitting the form.</returns>
public static Task <HttpResponseMessage> SubmitFormAsync(this HttpClient client, IHtmlFormElement form, IHtmlElement submitButton)
{
if (form == null)
{
throw new ArgumentNullException(nameof(form));
}
if (submitButton == null)
{
throw new ArgumentNullException(nameof(submitButton));
}
var formSubmission = form.GetSubmission(submitButton);
var targetUri = (Uri)formSubmission.Target;
if (submitButton.HasAttribute("formaction"))
{
var formAction = submitButton.GetAttribute("formaction");
targetUri = new Uri(formAction, UriKind.Relative);
}
var submitFormRequest = new HttpRequestMessage(new HttpMethod(formSubmission.Method.ToString()), targetUri)
{
Content = new StreamContent(formSubmission.Body)
};
foreach (var header in formSubmission.Headers)
{
submitFormRequest.Headers.TryAddWithoutValidation(header.Key, header.Value);
submitFormRequest.Content.Headers.TryAddWithoutValidation(header.Key, header.Value);
}
return(client.SendAsync(submitFormRequest));
}
public static Task <HttpResponseMessage> SendAsync(
this HttpClient client,
IHtmlFormElement form,
IHtmlElement submitButton,
IEnumerable <KeyValuePair <string, string> > formValues)
{
foreach (var kvp in formValues)
{
var element = Assert.IsAssignableFrom <IHtmlInputElement>(form[kvp.Key]);
element.Value = kvp.Value;
}
var submit = form.GetSubmission(submitButton);
var target = (Uri)submit.Target;
if (submitButton.HasAttribute("formaction"))
{
var formaction = submitButton.GetAttribute("formaction");
target = new Uri(formaction, UriKind.Relative);
}
var submision = new HttpRequestMessage(new HttpMethod(submit.Method.ToString()), target)
{
Content = new StreamContent(submit.Body)
};
foreach (var header in submit.Headers)
{
submision.Headers.TryAddWithoutValidation(header.Key, header.Value);
submision.Content.Headers.TryAddWithoutValidation(header.Key, header.Value);
}
return(client.SendAsync(submision));
}
public void Inject(HtmlNodeElement element)
{
IHtmlElement input = element.Children.FirstOrDefault(x => x.TagName == "input");
if (input != null)
{
HtmlParser parser = new HtmlParser();
if (input.GetAttribute("name")?.Value != null)
{
IHtmlElement validationMessageTag;
using (var writer = new System.IO.StringWriter())
{
_htmlHelper.ValidationMessage(input.GetAttribute("name").Value, _options?.ValidationMessageAttributes?.ToDictionary()).WriteTo(writer, HtmlEncoder.Default);
validationMessageTag = parser.ParseString(writer.ToString()).FirstOrDefault();
}
using (var writer = new System.IO.StringWriter())
{
_htmlHelper.TextBox(input.GetAttribute("name").Value).WriteTo(writer, HtmlEncoder.Default);
IHtmlElement textBox = parser.ParseString(writer.ToString()).FirstOrDefault();
foreach (var attr in textBox.Attributes)
{
if (attr.Name.StartsWith("data"))
{
input.AddAttribute(attr);
}
}
}
element.AddAfter(input.UId, validationMessageTag);
}
}
int index = 0;
while (element.Children.Count > index)
{
if (element.Children[index] is IHtmlNodeElement)
{
Inject((HtmlNodeElement)element.Children[index]);
}
index++;
}
}
public override IHtmlElement Check(IHtmlElement elem,IHtmlElement root = null)
{
var attr = elem.GetAttribute(this.AttributeName);
if (attr == null) return null;
if (this.AttributeValue != null) {
return this.AttributeValue == attr?elem:null;
}
return elem;
}
/// <summary>
/// If the given element is a html link or it contains
/// a child which is a html link then the url of the first
/// link found is returned. Otherwise the InnerText of the element
/// is returned.
/// </summary>
public static string FirstLinkOrInnerText(this IHtmlElement element)
{
if (element.TagName == "A")
{
return(element.GetAttribute("HREF"));
}
IHtmlElement link = element.Children.FirstOrDefault(child => child.TagName == "A");
return(link != null ? link.GetAttribute("HREF") : element.InnerText);
}
internal static bool IsMarked(IHtmlElement element)
{
var attr = element.GetAttribute(Attribute_MarkerCount);
if (string.IsNullOrEmpty(attr))
{
return(false);
}
return(int.Parse(attr) > 0);
}
public static Task <HttpResponseMessage> SendAsync(
this HttpClient client,
IHtmlFormElement form,
IHtmlElement submitButton,
IEnumerable <KeyValuePair <string, string> > formValues)
{
foreach (var kvp in formValues)
{
switch (form[kvp.Key])
{
case IHtmlInputElement input:
input.Value = kvp.Value;
if (bool.TryParse(kvp.Value, out var isChecked))
{
input.IsChecked = isChecked;
}
break;
case IHtmlSelectElement select:
select.Value = kvp.Value;
break;
default:
throw new Exception($"Unknown form element: '{kvp.Key}'");
}
}
var submit = form.GetSubmission(submitButton);
var target = (Uri)submit.Target;
if (submitButton.HasAttribute("formaction"))
{
var formaction = submitButton.GetAttribute("formaction");
target = new Uri(formaction, UriKind.Relative);
}
var submision = new HttpRequestMessage(new HttpMethod(submit.Method.ToString()), target)
{
Content = new StreamContent(submit.Body)
};
foreach (var header in submit.Headers)
{
submision.Headers.TryAddWithoutValidation(header.Key, header.Value);
submision.Content.Headers.TryAddWithoutValidation(header.Key, header.Value);
}
return(client.SendAsync(submision));
}
public static Task <HttpResponseMessage> SendAsync(
this HttpClient client,
IHtmlFormElement form,
IHtmlElement submitButton,
IEnumerable <KeyValuePair <string, string> > formValues)
{
foreach (var formValue in formValues)
{
if (form[formValue.Key] is IHtmlInputElement elementAsInput)
{
elementAsInput.Value = formValue.Value;
}
else if (form[formValue.Key] is IHtmlSelectElement)
{
var matchingSelect = form.QuerySelectorAll("select")
.OfType <IHtmlSelectElement>()
.FirstOrDefault(s => s.Children.OfType <IHtmlOptionElement>().Any(o => o.Value == formValue.Value));
if (matchingSelect != null)
{
matchingSelect.Value = formValue.Value;
}
}
}
var documentRequest = form.GetSubmission(submitButton);
var requestUri = submitButton.HasAttribute("formaction") ?
new Uri(submitButton.GetAttribute("formaction"), UriKind.Relative) :
documentRequest.Target;
var request = new HttpRequestMessage(new HttpMethod(documentRequest.Method.ToString()), requestUri)
{
Content = new StreamContent(documentRequest.Body)
};
foreach (var header in documentRequest.Headers)
{
request.Headers.TryAddWithoutValidation(header.Key, header.Value);
request.Content.Headers.TryAddWithoutValidation(header.Key, header.Value);
}
return(client.SendAsync(request));
}
/// <summary>
/// Sanitizes the style.
/// </summary>
/// <param name="element">The element.</param>
/// <param name="baseUrl">The base URL.</param>
protected void SanitizeStyle(IHtmlElement element, string baseUrl)
{
// filter out invalid CSS declarations
// see https://github.com/AngleSharp/AngleSharp/issues/101
if (element.GetAttribute("style") == null)
{
return;
}
element.SetAttribute("style", element.Style.ToCss());
var styles = element.Style;
if (styles == null || styles.Length == 0)
{
return;
}
SanitizeStyleDeclaration(element, styles, baseUrl);
}
private Inline GenerateAbbreviation(IHtmlElement node)
{
var span = new Span()
{
TextDecorations = TextDecorations.Underline,
};
AddInlineChildren(node, span.Inlines);
if (node.HasAttribute("title"))
{
ToolTip toolTip = new ToolTip()
{
Content = node.GetAttribute("title"),
};
ToolTipService.SetToolTip(span, toolTip);
}
return(span);
}
internal object GetUserName() => _userNameInput.GetAttribute("value");
internal string GetEmail() => _emailInput.GetAttribute("value");
private static TextElement ConvertAnchorElement(IHtmlElement anchorHtmlElement)
{
IEnumerable<Inline> hyperlinkContent = anchorHtmlElement.ChildNodes.Select(child => HtmlConverter.ConvertHtmlNode(child)).OfType<Inline>();
Hyperlink hyperlink = new Hyperlink();
hyperlink.Inlines.AddRange(hyperlinkContent);
string hyperReference = anchorHtmlElement.GetAttribute("href");
Uri navigationUri;
if (Uri.TryCreate(hyperReference, UriKind.RelativeOrAbsolute, out navigationUri))
hyperlink.NavigateUri = navigationUri;
return hyperlink;
}
/// <summary>
/// Sanitizes the style.
/// </summary>
/// <param name="element">The element.</param>
/// <param name="baseUrl">The base URL.</param>
protected void SanitizeStyle(IHtmlElement element, string baseUrl)
{
// filter out invalid CSS declarations
// see https://github.com/FlorianRappl/AngleSharp/issues/101
if (element.GetAttribute("style") == null) return;
element.SetAttribute("style", element.Style.ToCss());
var styles = element.Style;
if (styles == null || styles.Length == 0) return;
var removeStyles = new List<Tuple<ICssProperty, RemoveReason>>();
var setStyles = new Dictionary<string, string>();
foreach (var style in styles)
{
var key = DecodeCss(style.Name);
var val = DecodeCss(style.Value);
if (!AllowedCssProperties.Contains(key))
{
removeStyles.Add(new Tuple<ICssProperty, RemoveReason>(style, RemoveReason.NotAllowedStyle));
continue;
}
if(CssExpression.IsMatch(val) || DisallowCssPropertyValue.IsMatch(val))
{
removeStyles.Add(new Tuple<ICssProperty, RemoveReason>(style, RemoveReason.NotAllowedValue));
continue;
}
var urls = CssUrl.Matches(val);
if (urls.Count > 0)
{
if (urls.Cast<Match>().Any(m => GetSafeUri(m.Groups[2].Value) == null || SanitizeUrl(m.Groups[2].Value, baseUrl) == null))
removeStyles.Add(new Tuple<ICssProperty, RemoveReason>(style, RemoveReason.NotAllowedUrlValue));
else
{
var s = CssUrl.Replace(val, m => "url(" + m.Groups[1].Value + SanitizeUrl(m.Groups[2].Value, baseUrl) + m.Groups[3].Value);
if (s != val)
{
if (key != style.Name)
{
removeStyles.Add(new Tuple<ICssProperty, RemoveReason>(style, RemoveReason.NotAllowedUrlValue));
}
setStyles[key] = s;
}
}
}
}
foreach (var style in removeStyles)
{
RemoveStyle(element, styles, style.Item1, style.Item2);
}
foreach (var style in setStyles)
{
styles.SetProperty(style.Key, style.Value);
}
}
private UIElement GeneratePreformattedCodeBlock(IHtmlElement node)
{
string language = node.GetAttribute("class");
HighlightLanguage highlightLanguage = HighlightLanguage.PlainText;
switch (language)
{
case "python":
highlightLanguage = HighlightLanguage.Python;
break;
case "javascript":
case "js":
case "jsx":
highlightLanguage = HighlightLanguage.JavaScript;
break;
case "json":
highlightLanguage = HighlightLanguage.JSON;
break;
case "cs":
case "csharp":
highlightLanguage = HighlightLanguage.CSharp;
break;
case "c":
case "c++":
case "cc":
case "cpp":
highlightLanguage = HighlightLanguage.CPlusPlus;
break;
case "css":
highlightLanguage = HighlightLanguage.CSS;
break;
case "php":
highlightLanguage = HighlightLanguage.PHP;
break;
case "ruby":
case "rb":
highlightLanguage = HighlightLanguage.Ruby;
break;
case "html":
case "xml":
case "xhtml":
case "rss":
highlightLanguage = HighlightLanguage.XML;
break;
case "java":
case "jsp":
highlightLanguage = HighlightLanguage.Java;
break;
case "sql":
highlightLanguage = HighlightLanguage.SQL;
break;
default:
break;
}
return(new CodeHighlightedTextBlock()
{
Code = CleanText(node.InnerHtml),
HighlightLanguage = highlightLanguage,
});
}
internal object GetNewEmail() => _newEmailInput.GetAttribute("value");
internal object GetEmail() => _emailInput.GetAttribute("value");
public static Task <HttpResponseMessage> SendFormAsync(
this HttpClient client,
IHtmlFormElement form,
IHtmlElement submitButton,
IEnumerable <KeyValuePair <string, string> > formValues)
{
if (client is null)
{
throw new ArgumentNullException(nameof(client));
}
if (form is null)
{
throw new ArgumentNullException(nameof(form));
}
if (submitButton is null)
{
throw new ArgumentNullException(nameof(submitButton));
}
if (formValues is null)
{
throw new ArgumentNullException(nameof(formValues));
}
foreach (var kvp in formValues)
{
var element = form[kvp.Key];
switch (element)
{
case IHtmlInputElement input:
input.Value = kvp.Value;
break;
case IHtmlSelectElement select:
select.Value = kvp.Value;
break;
}
}
Assert.True(form.CheckValidity(), "Form contains invalid data");
var submit = form.GetSubmission(submitButton);
var target = (Uri)submit.Target;
if (submitButton.HasAttribute("formaction"))
{
var formaction = submitButton.GetAttribute("formaction");
target = new Uri(formaction, UriKind.Relative);
}
#pragma warning disable CA2000 // Dispose objects before losing scope
var submision = new HttpRequestMessage(new HttpMethod(submit.Method.ToString()), target)
{
Content = new StreamContent(submit.Body)
};
#pragma warning restore CA2000 // Dispose objects before losing scope
foreach (var header in submit.Headers)
{
submision.Headers.TryAddWithoutValidation(header.Key, header.Value);
submision.Content.Headers.TryAddWithoutValidation(header.Key, header.Value);
}
return(client.SendAsync(submision));
}
private static bool HasSummaryCellAttributes(IHtmlElement cell)
{
return cell.GetAttribute("COLSPAN") == "3";
}