private IVsTextLines GetTextBuffer(System.IntPtr docDataExisting)
{
IVsTextLines textLines;
ThreadHelper.ThrowIfNotOnUIThread();
if (docDataExisting == IntPtr.Zero)
{
// Create a new IVsTextLines buffer.
Type textLinesType = typeof(IVsTextLines);
Guid riid = textLinesType.GUID;
Guid clsid = typeof(VsTextBufferClass).GUID;
textLines = _package.CreateInstance(ref clsid, ref riid, textLinesType) as IVsTextLines;
// set the buffer's site
IOleServiceProvider provider = null;
ThreadHelper.JoinableTaskFactory.Run(async delegate
{
await ThreadHelper.JoinableTaskFactory.SwitchToMainThreadAsync();
provider = (IOleServiceProvider)_serviceProvider.GetService(typeof(IOleServiceProvider));
((IObjectWithSite)textLines).SetSite(provider);
});
}
else
{
// Use the existing text buffer
Object dataObject = Marshal.GetObjectForIUnknown(docDataExisting);
textLines = dataObject as IVsTextLines;
if (textLines == null)
{
// Try get the text buffer from textbuffer provider
if (dataObject is IVsTextBufferProvider textBufferProvider)
{
textBufferProvider.GetTextBuffer(out textLines);
}
}
if (textLines == null)
{
// Unknown docData type then, so we have to force VS to close the other editor.
ErrorHandler.ThrowOnFailure((int)VSConstants.VS_E_INCOMPATIBLEDOCDATA);
}
}
return(textLines);
}
private IVsTextLines GetTextBuffer(System.IntPtr docDataExisting)
{
IVsTextLines textLines;
if (docDataExisting == IntPtr.Zero)
{
// Create a new IVsTextLines buffer.
Type textLinesType = typeof(IVsTextLines);
Guid riid = textLinesType.GUID;
Guid clsid = typeof(VsTextBufferClass).GUID;
textLines = _package.CreateInstance(ref clsid, ref riid, textLinesType) as IVsTextLines;
// set the buffer's site
((IObjectWithSite)textLines).SetSite(_serviceProvider.GetService(typeof(IOleServiceProvider)));
}
else
{
// Use the existing text buffer
Object dataObject = Marshal.GetObjectForIUnknown(docDataExisting);
textLines = dataObject as IVsTextLines;
if (textLines == null)
{
// Try get the text buffer from textbuffer provider
IVsTextBufferProvider textBufferProvider = dataObject as IVsTextBufferProvider;
if (textBufferProvider != null)
{
textBufferProvider.GetTextBuffer(out textLines);
}
}
if (textLines == null)
{
// Unknown docData type then, so we have to force VS to close the other editor.
ErrorHandler.ThrowOnFailure((int)VSConstants.VS_E_INCOMPATIBLEDOCDATA);
}
}
return(textLines);
}