/// <summary>
/// Attempts to locate associated editor document. Implementation depends on the platform.
/// </summary>
/// <typeparam name="T">Type of the document to locate</typeparam>
public static T GetEditorDocument <T>(this ITextBuffer textBuffer) where T : class, IEditorDocument
{
var editorBuffer = textBuffer.ToEditorBuffer();
var document = editorBuffer?.GetService <T>();
if (document != null)
{
return(document);
}
// May be top-level projection buffer such as REPL or markdown
var pb = textBuffer as IProjectionBuffer;
document = pb?.SourceBuffers?.Select((tb) => tb.GetService <T>())?.FirstOrDefault(x => x != null);
if (document == null)
{
var viewData = TextViewConnectionListener.GetTextViewDataForBuffer(textBuffer);
if (viewData?.LastActiveView != null)
{
var controller = ViewController.FromTextView(viewData.LastActiveView);
if (controller != null && controller.TextBuffer != null)
{
document = controller.TextBuffer.GetService <T>();
}
}
}
return(document);
}
public IWpfTextView CreateTextView(IEnumerable <SnapshotSpan> lines)
{
var parentView = TextViewConnectionListener.GetTextViewDataForBuffer(lines.First().Snapshot.TextBuffer).LastActiveView;
var buffer = ProjectionFactory.CreateProjectionBuffer(
null,
lines.SelectMany(s => new object[] { Environment.NewLine }.Concat(
// Use the text from the outer ProjectionBuffer, which can
// include language services from other projected buffers.
// This makes the tooltip include syntax highlighting that
// does not exist in the innermost Markdown buffer.
parentView.BufferGraph
.MapUpToBuffer(s, SpanTrackingMode.EdgeExclusive, parentView.TextBuffer)
.Select(s2 => s2.Snapshot.CreateTrackingSpan(s, SpanTrackingMode.EdgeExclusive))
))
.Skip(1) // Skip first newline
.ToList(),
ProjectionBufferOptions.None
);
var view = TextEditorFactory.CreateTextView(buffer, TextEditorFactory.NoRoles);
view.Background = Brushes.Transparent;
SizeToFit(view);
return(view);
}
internal void Create(HtmlEditorDocument document, IVsContainedLanguage containedLanguage, IVsTextBufferCoordinator bufferCoordinator, LanguageProjectionBuffer languageBuffer, out IVsTextViewFilter containedLanguageViewfilter)
{
containedLanguageViewfilter = null;
TextViewData textViewDataForBuffer = TextViewConnectionListener.GetTextViewDataForBuffer(document.TextBuffer);
if (textViewDataForBuffer == null || textViewDataForBuffer.LastActiveView == null)
{
return;
}
TextView = textViewDataForBuffer.LastActiveView;
IVsTextViewIntellisenseHostProvider vsTextViewIntellisenseHostProvider = TextView.QueryInterface <IVsTextViewIntellisenseHostProvider>();
if (vsTextViewIntellisenseHostProvider == null)
{
return;
}
Guid gUID = typeof(IVsTextViewIntellisenseHost).GUID;
IntPtr intPtr;
vsTextViewIntellisenseHostProvider.CreateIntellisenseHost(bufferCoordinator, ref gUID, out intPtr);
if (intPtr == IntPtr.Zero)
{
return;
}
IVsTextViewIntellisenseHost vsTextViewIntellisenseHost = Marshal.GetObjectForIUnknown(intPtr) as IVsTextViewIntellisenseHost;
Marshal.Release(intPtr);
if (vsTextViewIntellisenseHost == null)
{
return;
}
HtmlMainController htmlMainController = HtmlMainController.FromTextView(TextView);
ICommandTarget chainedController = htmlMainController.ChainedController;
if (chainedController == null)
{
return;
}
OleToCommandTargetShim oleToCommandTargetShim = chainedController as OleToCommandTargetShim;
if (containedLanguage.GetTextViewFilter(vsTextViewIntellisenseHost, oleToCommandTargetShim.OleTarget, out containedLanguageViewfilter) != 0)
{
return;
}
IOleCommandTarget oleTarget = containedLanguageViewfilter as IOleCommandTarget;
OleToCommandTargetShim containedLanguageTarget = new OleToCommandTargetShim(TextView, oleTarget);
ContainedLanguageTarget = containedLanguageTarget;
_languageBuffer = languageBuffer;
_languageBuffer.MappingsChanged += OnMappingsChanged;
}
/// <summary>
/// Retrieves last active view, if any, for the text buffer instance.
/// Text buffer is not guaranteed to have a view.
/// </summary>
public static ITextView CurrentTextView(this ITextBuffer textBuffer)
{
ITextView textView = null;
if (textBuffer != null)
{
var textViewData = TextViewConnectionListener.GetTextViewDataForBuffer(textBuffer);
textView = textViewData?.LastActiveView;
}
return(textView);
}
public static ITextView CurrentTextView(this ITextBuffer viewBuffer) {
ITextView textView = null;
if (viewBuffer != null) {
TextViewData textViewData = TextViewConnectionListener.GetTextViewDataForBuffer(viewBuffer);
if (textViewData != null) {
textView = textViewData.LastActiveView;
}
}
return textView;
}
/// <summary>
/// Retrieves document instance from text buffer
/// </summary>
public static IEditorDocument TryFromTextBuffer(ITextBuffer textBuffer)
{
IEditorDocument document = ServiceManager.GetService <IEditorDocument>(textBuffer);
if (document == null)
{
TextViewData viewData = TextViewConnectionListener.GetTextViewDataForBuffer(textBuffer);
if (viewData != null && viewData.LastActiveView != null)
{
MdMainController controller = MdMainController.FromTextView(viewData.LastActiveView);
if (controller != null && controller.TextBuffer != null)
{
document = ServiceManager.GetService <MdEditorDocument>(controller.TextBuffer);
}
}
}
return(document);
}
public static T TryFromTextBuffer <T>(ITextBuffer textBuffer, string contentType) where T : class, IEditorDocument
{
var document = ServiceManager.GetService <T>(textBuffer);
if (document == null)
{
document = FindInProjectedBuffers <T>(textBuffer, contentType);
if (document == null)
{
TextViewData viewData = TextViewConnectionListener.GetTextViewDataForBuffer(textBuffer);
if (viewData != null && viewData.LastActiveView != null)
{
var controller = ViewController.FromTextView(viewData.LastActiveView);
if (controller != null && controller.TextBuffer != null)
{
document = ServiceManager.GetService <T>(controller.TextBuffer);
}
}
}
}
return(document);
}
