public virtual CompletionStartData InitializeCompletion(CompletionTrigger trigger, SnapshotPoint triggerLocation, CancellationToken token)
{
var reason = ConvertReason(trigger.Reason, trigger.Character);
if (reason == null)
{
return(CompletionStartData.DoesNotParticipateInCompletion);
}
var spine = XmlParser.GetSpineParser(triggerLocation);
LoggingService.LogDebug(
"Attempting completion for state '{0}'x{1}, character='{2}', trigger='{3}'",
spine.CurrentState, spine.CurrentStateLength, trigger.Character, trigger
);
var(kind, length) = XmlCompletionTriggering.GetTrigger(spine, reason.Value, trigger.Character);
if (kind != XmlCompletionTrigger.None)
{
return(new CompletionStartData(CompletionParticipation.ProvidesItems, new SnapshotSpan(triggerLocation.Snapshot, triggerLocation.Position - length, length)));
}
//TODO: closing tag completion after typing >
return(CompletionStartData.DoesNotParticipateInCompletion);
}
public async virtual Task <CompletionContext> GetCompletionContextAsync(
IAsyncCompletionSession session,
CompletionTrigger trigger,
SnapshotPoint triggerLocation,
SnapshotSpan applicableToSpan,
CancellationToken token)
{
var reason = ConvertReason(trigger.Reason, trigger.Character);
if (reason == null)
{
return(CompletionContext.Empty);
}
var parser = BackgroundParser <TResult> .GetParser <TParser> ((ITextBuffer2)triggerLocation.Snapshot.TextBuffer);
var spine = parser.GetSpineParser(triggerLocation);
var(kind, _) = await Task.Run(() => XmlCompletionTriggering.GetTrigger(spine, reason.Value, trigger.Character), token).ConfigureAwait(false);
if (kind != XmlCompletionTrigger.None)
{
List <XObject> nodePath = GetNodePath(spine, triggerLocation.Snapshot);
switch (kind)
{
case XmlCompletionTrigger.Element:
case XmlCompletionTrigger.ElementWithBracket:
//TODO: if it's on the first line and there's no XML declaration, add <"?xml version=\"1.0\" encoding=\"{encoding}\" ?>";
//TODO: if it's on the first or second line and there's no DTD declaration, add the DTDs, or at least <!DOCTYPE
//TODO: add closing tags // AddCloseTag (list, spine.Nodes);
//TODO: add snippets // MonoDevelop.Ide.CodeTemplates.CodeTemplateService.AddCompletionDataForFileName (DocumentContext.Name, list);
return(await GetElementCompletionsAsync(session, triggerLocation, nodePath, kind == XmlCompletionTrigger.ElementWithBracket, token));
case XmlCompletionTrigger.Attribute:
IAttributedXObject attributedOb = (spine.Nodes.Peek() as IAttributedXObject) ?? spine.Nodes.Peek(1) as IAttributedXObject;
return(await GetAttributeCompletionsAsync(session, triggerLocation, nodePath, attributedOb, GetExistingAttributes (spine, triggerLocation.Snapshot, attributedOb), token));
case XmlCompletionTrigger.AttributeValue:
if (spine.Nodes.Peek() is XAttribute att && spine.Nodes.Peek(1) is IAttributedXObject attributedObject)
{
return(await GetAttributeValueCompletionsAsync(session, triggerLocation, nodePath, attributedObject, att, token));
}
break;
case XmlCompletionTrigger.Entity:
return(await GetEntityCompletionsAsync(session, triggerLocation, nodePath, token));
case XmlCompletionTrigger.DocType:
case XmlCompletionTrigger.DeclarationOrCDataOrComment:
return(await GetDeclarationCompletionsAsync(session, triggerLocation, nodePath, token));
}
}
return(CompletionContext.Empty);
}
public async virtual Task <CompletionContext> GetCompletionContextAsync(
IAsyncCompletionSession session,
CompletionTrigger trigger,
SnapshotPoint triggerLocation,
SnapshotSpan applicableToSpan,
CancellationToken token)
{
var reason = ConvertReason(trigger.Reason, trigger.Character);
if (reason == null)
{
return(CompletionContext.Empty);
}
var parser = XmlParser.GetSpineParser(triggerLocation);
// FIXME: cache the value from InitializeCompletion somewhere?
var(kind, _) = XmlCompletionTriggering.GetTrigger(parser, reason.Value, trigger.Character);
if (kind != XmlCompletionTrigger.None)
{
List <XObject> nodePath = parser.GetNodePath(triggerLocation.Snapshot);
session.Properties.AddProperty(typeof(XmlCompletionTrigger), kind);
switch (kind)
{
case XmlCompletionTrigger.Element:
case XmlCompletionTrigger.ElementWithBracket:
// if we're completing an existing element, remove it from the path
// so we don't get completions for its children instead
if (nodePath.Count > 0)
{
if (nodePath[nodePath.Count - 1] is XElement leaf && leaf.Name.Length == applicableToSpan.Length)
{
nodePath.RemoveAt(nodePath.Count - 1);
}
}
//TODO: if it's on the first or second line and there's no DTD declaration, add the DTDs, or at least <!DOCTYPE
//TODO: add snippets // MonoDevelop.Ide.CodeTemplates.CodeTemplateService.AddCompletionDataForFileName (DocumentContext.Name, list);
return(await GetElementCompletionsAsync(session, triggerLocation, nodePath, kind == XmlCompletionTrigger.ElementWithBracket, token));
case XmlCompletionTrigger.Attribute:
IAttributedXObject attributedOb = (parser.Spine.Peek() as IAttributedXObject) ?? parser.Spine.Peek(1) as IAttributedXObject;
parser.Clone().AdvanceUntilEnded((XObject)attributedOb, triggerLocation.Snapshot, 1000);
var attributes = attributedOb.Attributes.ToDictionary(StringComparer.OrdinalIgnoreCase);
return(await GetAttributeCompletionsAsync(session, triggerLocation, nodePath, attributedOb, attributes, token));
case XmlCompletionTrigger.AttributeValue:
if (parser.Spine.Peek() is XAttribute att && parser.Spine.Peek(1) is IAttributedXObject attributedObject)
{
return(await GetAttributeValueCompletionsAsync(session, triggerLocation, nodePath, attributedObject, att, token));
}
break;
case XmlCompletionTrigger.Entity:
return(await GetEntityCompletionsAsync(session, triggerLocation, nodePath, token));
case XmlCompletionTrigger.DocType:
case XmlCompletionTrigger.DeclarationOrCDataOrComment:
return(await GetDeclarationCompletionsAsync(session, triggerLocation, nodePath, token));
}
}
return(CompletionContext.Empty);
}
