/// <include file='doc\DocumentTask.uex' path='docs/doc[@for="DocumentTask.OnNavigate"]/*' />
protected override void OnNavigate(EventArgs e)
{
TextSpan span = this.span;
if (textLineMarker != null)
{
TextSpan[] spanArray = new TextSpan[1];
NativeMethods.ThrowOnFailure(textLineMarker.GetCurrentSpan(spanArray));
span = spanArray[0];
}
IVsUIHierarchy hierarchy;
uint itemID;
IVsWindowFrame docFrame;
IVsTextView textView;
VsShell.OpenDocument(this.site, this.fileName, NativeMethods.LOGVIEWID_Code, out hierarchy, out itemID, out docFrame, out textView);
NativeMethods.ThrowOnFailure(docFrame.Show());
if (textView != null)
{
NativeMethods.ThrowOnFailure(textView.SetCaretPos(span.iStartLine, span.iStartIndex));
TextSpanHelper.MakePositive(ref span);
NativeMethods.ThrowOnFailure(textView.SetSelection(span.iStartLine, span.iStartIndex, span.iEndLine, span.iEndIndex));
NativeMethods.ThrowOnFailure(textView.EnsureSpanVisible(span));
}
base.OnNavigate(e);
}
/// <include file='doc\ViewFilter.uex' path='docs/doc[@for="ViewFilter.HandleGoto"]/*' />
/// <summary>Handles VsCommands.GotoDefn, VsCommands.GotoDecl and VsCommands.GotoRef by
/// calling OnSyncGoto on the Source object and opening the text editor on the resulting
/// URL, then scrolling to the resulting span.</summary>
public virtual void HandleGoto(VsCommands cmd)
{
TextSpan ts = new TextSpan();
// Get the caret position
NativeMethods.ThrowOnFailure(this.textView.GetCaretPos(out ts.iStartLine, out ts.iStartIndex));
ts.iEndLine = ts.iStartLine;
ts.iEndIndex = ts.iStartIndex;
// Get the tip text at that location.
// Wait, since the user specifically requested this one...
TextSpan span;
string url = this.source.OnSyncGoto(cmd, this.textView, ts.iEndLine, ts.iEndIndex, out span);
if (url == null || url.Trim().Length == 0) // nothing to show
{
return;
}
// Open the referenced document, and scroll to the given location.
IVsUIHierarchy hierarchy;
uint itemID;
IVsWindowFrame frame;
IVsTextView view;
VsShell.OpenDocument(this.service.Site, url, NativeMethods.LOGVIEWID_Code, out hierarchy, out itemID, out frame, out view);
if (view != null)
{
TextSpanHelper.MakePositive(ref span);
NativeMethods.ThrowOnFailure(view.EnsureSpanVisible(span));
NativeMethods.ThrowOnFailure(view.SetSelection(span.iStartLine, span.iStartIndex, span.iEndLine, span.iEndIndex));
}
}
/// <include file='doc\ViewFilter.uex' path='docs/doc[@for="ViewFilter.GetWordExtent"]/*' />
/// <summary>Returns the result of Source.GetWordExtent.</summary>
public virtual int GetWordExtent(int line, int index, uint flags, TextSpan[] span)
{
Debug.Assert(line >= 0 && index >= 0);
if (span == null)
{
NativeHelpers.RaiseComError(NativeMethods.E_INVALIDARG);
}
else
{
span[0] = new TextSpan();
}
span[0].iStartLine = span[0].iEndLine = line;
span[0].iStartIndex = span[0].iEndIndex = index;
int start, end;
if (!this.source.GetWordExtent(line, index, (WORDEXTFLAGS)flags, out start, out end))
{
return(NativeMethods.S_FALSE);
}
span[0].iStartIndex = start;
span[0].iEndIndex = end;
TextSpanHelper.MakePositive(ref span[0]);
return(NativeMethods.S_OK);
}
/// <include file='doc\EditArray.uex' path='docs/doc[@for="EditSpan.EditSpan"]/*' />
/// <summary>
/// Construct a new edit span object
/// </summary>
/// <param name="toReplace">The text span to remove from the buffer (can be empty)</param>
/// <param name="insertText">The text to insert in it's place (can be null)</param>
public EditSpan(TextSpan toReplace, string insertText)
{
if (!TextSpanHelper.IsPositive(toReplace))
{
TextSpanHelper.MakePositive(ref toReplace);
}
this.span = toReplace;
this.text = insertText;
this.lineCount = -1;
}
/// <include file='doc\Source.uex' path='docs/doc[@for="ViewFilter.GetSelection"]/*' />
/// <summary>Returns the current selection, adjusted to become a positive text span</summary>
public TextSpan GetSelection()
{
//get text range
TextSpan[] aspan = new TextSpan[1];
NativeMethods.ThrowOnFailure(this.textView.GetSelectionSpan(aspan));
if (!TextSpanHelper.IsPositive(aspan[0]))
{
TextSpanHelper.MakePositive(ref aspan[0]);
}
return(aspan[0]);
}
/// <include file='doc\ViewFilter.uex' path='docs/doc[@for="ViewFilter.GetPairExtents"]/*' />
public virtual int GetPairExtents(int line, int index, TextSpan[] span)
{
Debug.Assert(line >= 0 && index >= 0);
if (span == null)
{
return(NativeMethods.E_INVALIDARG);
}
this.source.GetPairExtents(this.textView, line, index, out span[0]);
TextSpanHelper.MakePositive(ref span[0]);
return(NativeMethods.S_OK);
}