public IWpfTextViewHost CreateProjectionEditor(string filePath, int start, int length, bool isReadonly = true)
{
//IVsInvisibleEditors are in-memory represenations of typical Visual Studio editors.
//Language services, highlighting and error squiggles are hooked up to these editors
//for us once we convert them to WpfTextViews.
var invisibleEditor = GetInvisibleEditor(filePath);
var docDataPointer = IntPtr.Zero;
Guid guidIVsTextLines = typeof(IVsTextLines).GUID;
ErrorHandler.ThrowOnFailure(invisibleEditor.GetDocData(
fEnsureWritable: 1
, riid: ref guidIVsTextLines
, ppDocData: out docDataPointer));
IVsTextLines docData = (IVsTextLines)Marshal.GetObjectForIUnknown(docDataPointer);
// This will actually be defined as _codewindowbehaviorflags2.CWB_DISABLEDIFF once the latest version of
// Microsoft.VisualStudio.TextManager.Interop.16.0.DesignTime is published. Setting the flag will have no effect
// on releases prior to d16.0.
const _codewindowbehaviorflags CWB_DISABLEDIFF = (_codewindowbehaviorflags)0x04;
//Create a code window adapter
var codeWindow = EditorAdaptersFactoryService.CreateVsCodeWindowAdapter(OLEServiceProvider);
// You need to disable the dropdown, splitter and -- for d16.0 -- diff since you are extracting the code window's TextViewHost and using it.
((IVsCodeWindowEx)codeWindow).Initialize((uint)_codewindowbehaviorflags.CWB_DISABLESPLITTER | (uint)_codewindowbehaviorflags.CWB_DISABLEDROPDOWNBAR | (uint)CWB_DISABLEDIFF,
VSUSERCONTEXTATTRIBUTEUSAGE.VSUC_Usage_Filter,
string.Empty,
string.Empty,
0,
new INITVIEW[1]);
ErrorHandler.ThrowOnFailure(codeWindow.SetBuffer(docData));
//Get a text view for our editor which we will then use to get the WPF control for that editor.
IVsTextView textView;
ErrorHandler.ThrowOnFailure(codeWindow.GetPrimaryView(out textView));
//We add our own role to this text view. Later this will allow us to selectively modify
//this editor without getting in the way of Visual Studio's normal editors.
var roles = TextEditorFactoryService.DefaultRoles.Concat(new string[] { DCI_BABY_IDE });
var vsTextBuffer = docData as IVsTextBuffer;
var textBuffer = EditorAdaptersFactoryService.GetDataBuffer(vsTextBuffer);
if (textBuffer.Properties.ContainsProperty("StartPosition"))
{
textBuffer.Properties.RemoveProperty("StartPosition");
}
if (textBuffer.Properties.ContainsProperty("EndPosition"))
{
textBuffer.Properties.RemoveProperty("EndPosition");
}
textBuffer.Properties.AddProperty("StartPosition", start);
textBuffer.Properties.AddProperty("EndPosition", start + length);
var guid = VSConstants.VsTextBufferUserDataGuid.VsTextViewRoles_guid;
((IVsUserData)codeWindow).SetData(ref guid, TextEditorFactoryService.CreateTextViewRoleSet(roles).ToString());
var textViewHost = EditorService.EditorAdaptersFactoryService.GetWpfTextViewHost(textView);
return(textViewHost);
}