protected override void Write(UIElementRenderer renderer, EmphasisInline obj)
{
string delimiterClass = null;
switch (obj.DelimiterChar)
{
case '*':
case '_':
delimiterClass = obj.DelimiterCount == 2 ? "bold" : "italic";
break;
case '~':
delimiterClass = obj.DelimiterCount == 2 ? "strikethrough" : "subscript";
break;
case '^':
delimiterClass = "superscript";
break;
case '+':
delimiterClass = "inserted";
break;
case '=':
delimiterClass = "marked";
break;
}
if (delimiterClass != null)
{
renderer.Push(GetClassedElement <VisualElement>(delimiterClass));
renderer.WriteChildren(obj);
renderer.Pop();
}
else
{
renderer.WriteChildren(obj);
}
}
protected override void Write(UIElementRenderer renderer, ListBlock listBlock)
{
renderer.Push(GetClassedElement <VisualElement>("list"));
foreach (var item in listBlock.OfType <ListItemBlock>())
{
var listItem = GetClassedElement <VisualElement>("list-item");
renderer.Push(listItem);
var marker = listBlock.IsOrdered ? $"{item.Order}." : $"{listBlock.BulletType}";
var classes = listBlock.IsOrdered ? "inline" : "bullet";
renderer.WriteChildren(item);
listItem.Children()?.FirstOrDefault()?.Insert(0, GetTextElement <Label>(marker, classes));
renderer.Pop();
}
renderer.Pop();
}
protected override void Write(UIElementRenderer renderer, LinkInline link)
{
var url = link.Url;
if (link.IsImage)
{
var imageElement = GetClassedElement <Image>("image");
if (IsAssetDirectory(url))
{
var image = AssetDatabase.LoadAssetAtPath <Texture>(url);
if (image)
{
SetupImage(imageElement, image);
}
}
else
{
async Task DownloadImage(string MediaUrl)
{
UnityWebRequest request = UnityWebRequestTexture.GetTexture(MediaUrl);
var asyncOp = request.SendWebRequest();
while (!asyncOp.isDone)
{
await Task.Delay(100);
}
#if UNITY_2020_1_OR_NEWER
if (request.result == UnityWebRequest.Result.ConnectionError || request.result == UnityWebRequest.Result.ProtocolError)
#else
if (request.isNetworkError || request.isHttpError)
#endif
{ Debug.Log(request.error); }
else
{
SetupImage(imageElement, ((DownloadHandlerTexture)request.downloadHandler).texture);
}
}
_ = DownloadImage(link.Url);
}
renderer.Push(imageElement);
renderer.WriteChildren(link);
foreach (var child in imageElement.Children())
{
child.AddToClassList("alt-text");
}
renderer.Pop();
}
else
{
var lowerScheme = string.Empty;
var isValidUri = Uri.IsWellFormedUriString(url, UriKind.RelativeOrAbsolute);
if (!isValidUri)
{
var match = LinkInlineRenderer.SchemeCheck.Match(url);
if (match.Success)
{
lowerScheme = match.Groups[1].Value.ToLower();
}
else
{
lowerScheme = "#";
}
}
else
{
var uri = new Uri(url);
lowerScheme = uri.Scheme.ToLower();
}
var linkLabel = GetClassedElement <VisualElement>("link", lowerScheme);
linkLabel.tooltip = url;
if (isValidUri)
{
linkLabel.RegisterCallback <MouseUpEvent>(evt =>
{
if (LinkInlineRenderer.SchemeLinkHandlers.ContainsKey(lowerScheme))
{
LinkInlineRenderer.SchemeLinkHandlers[lowerScheme]?.Invoke(url);
}
});
}
renderer.Push(linkLabel);
renderer.WriteChildren(link);
renderer.Pop();
}
}
protected override void Write(UIElementRenderer renderer, DelimiterInline obj)
{
renderer.WriteText(obj.ToLiteral());
renderer.WriteChildren(obj);
}
protected override void Write(UIElementRenderer renderer, QuoteBlock obj)
{
renderer.Push(GetClassedElement <VisualElement>("quote"));
renderer.WriteChildren(obj);
renderer.Pop();
}
protected override void Write(UIElementRenderer renderer, LinkInline link)
{
var url = link.Url;
if (link.IsImage)
{
var imageElement = GetClassedElement <Image>("image");
if (IsAssetDirectory(url))
{
var image = AssetDatabase.LoadAssetAtPath <Texture>(url);
if (image)
{
SetupImage(imageElement, image);
}
}
else
{
var imageLoaderObject = new GameObject("MarkdownImageLoader", typeof(ImageLoadBehaviour))
{
isStatic = true, hideFlags = HideFlags.HideAndDontSave
};
var imageLoader = imageLoaderObject.GetComponent <ImageLoadBehaviour>();
var c = imageLoader.StartCoroutine(LoadImage(url, imageElement));
}
renderer.Push(imageElement);
renderer.WriteChildren(link);
foreach (var child in imageElement.Children())
{
child.AddToClassList("alt-text");
}
renderer.Pop();
}
else
{
var lowerScheme = string.Empty;
var isValidUri = Uri.IsWellFormedUriString(url, UriKind.RelativeOrAbsolute);
if (!isValidUri)
{
var match = LinkInlineRenderer.SchemeCheck.Match(url);
if (match.Success)
{
lowerScheme = match.Groups[1].Value.ToLower();
}
else
{
lowerScheme = "#";
}
}
else
{
var uri = new Uri(url);
lowerScheme = uri.Scheme.ToLower();
}
var linkLabel = GetClassedElement <VisualElement>("link", lowerScheme);
linkLabel.tooltip = url;
if (isValidUri)
{
linkLabel.RegisterCallback <MouseUpEvent>(evt =>
{
if (SchemeLinkHandlers.TryGetValue(lowerScheme, out var handler))
{
handler?.Invoke(url);
}
});
}
renderer.Push(linkLabel);
renderer.WriteChildren(link);
renderer.Pop();
}
}