HtmlIFrameElement
sealed class HtmlIFrameElement : HtmlFrameElementBase, IHtmlInlineFrameElement, IHtmlElement, IElement, INode, IEventTarget, IMarkupFormattable, IParentNode, IChildNode, INonDocumentTypeChildNode, IElementCssInlineStyle
Represents the HTML iframe element.
using AngleSharp.Dom.Collections;
using AngleSharp.Dom.Css;
using AngleSharp.Extensions;
using AngleSharp.Html;
using AngleSharp.Network;
using System.Threading;
using System.Threading.Tasks;
namespace AngleSharp.Dom.Html
{
internal sealed class HtmlIFrameElement : HtmlFrameElementBase, IHtmlInlineFrameElement, IHtmlElement, IElement, INode, IEventTarget, IMarkupFormattable, IParentNode, IChildNode, INonDocumentTypeChildNode, IElementCssInlineStyle
{
private readonly IBrowsingContext _context;
private SettableTokenList _sandbox;
public Alignment Align {
get {
return GetOwnAttribute(AttributeNames.Align).ToEnum(Alignment.Bottom);
}
set {
SetOwnAttribute(AttributeNames.Align, value.ToString());
}
}
public string ContentHtml {
get {
return GetOwnAttribute(AttributeNames.SrcDoc);
}
set {
SetOwnAttribute(AttributeNames.SrcDoc, value);
}
}
public ISettableTokenList Sandbox {
get {
if (_sandbox == null) {
_sandbox = new SettableTokenList(GetOwnAttribute(AttributeNames.Sandbox));
CreateBindings(_sandbox, AttributeNames.Sandbox);
}
return _sandbox;
}
}
public bool IsSeamless {
get {
return HasOwnAttribute(AttributeNames.SrcDoc);
}
set {
SetOwnAttribute(AttributeNames.SrcDoc, value ? string.Empty : null);
}
}
public bool IsFullscreenAllowed {
get {
return HasOwnAttribute(AttributeNames.AllowFullscreen);
}
set {
SetOwnAttribute(AttributeNames.AllowFullscreen, value ? string.Empty : null);
}
}
public IWindow ContentWindow => _context.Current;
public HtmlIFrameElement(Document owner, string prefix = null)
: base(owner, Tags.Iframe, prefix, NodeFlags.LiteralText)
{
_context = owner.NewChildContext(Sandboxes.None);
RegisterAttributeObserver(AttributeNames.Src, UpdateSource);
RegisterAttributeObserver(AttributeNames.SrcDoc, UpdateSource);
}
private void UpdateSource(string _)
{
this.CancelTasks();
string content = ContentHtml;
string source = base.Source;
if (content != null)
this.CreateTask((CancellationToken cancel) => _context.OpenAsync(delegate(BrowsingContextExtensions.VirtualResponse m) {
m.Content(content).Address(base.Owner.DocumentUri);
}, cancel)).ContinueWith(Finished);
else if (!string.IsNullOrEmpty(source) && !source.Is(base.BaseUri)) {
Url target = this.HyperReference(source);
DocumentRequest request = DocumentRequest.Get(target, this, base.Owner.DocumentUri);
this.CreateTask((CancellationToken cancel) => _context.OpenAsync(request, cancel)).ContinueWith(Finished);
}
}
private void Finished(Task<IDocument> task)
{
if (!task.IsFaulted)
base.ContentDocument = task.Result;
this.FireLoadOrErrorEvent(task);
}
}
}