/// <include file='doc\EditArray.uex' path='docs/doc[@for="EditArray.EditArray1"]/*' />
/// <summary>
/// This constructor takes a view and will use CompoundViewAction to make the updates
/// and it will update the current selection accordingly.
/// <param name="source">The buffer to operate on</param>
/// <param name="view">The text view to use for CompoundViewAction and whose selection you want updated</param>
/// <param name="merge">Whether to attempt to merge edits</param>
/// <param name="description">Name used in compound action</param>
/// </summary>
public EditArray(Source source, IVsTextView view, bool merge, string description)
{
this.source = source;
this.editList = new ArrayList();
this.merge = merge;
this.description = description;
if (view != null) {
TextSpan[] pSpan = new TextSpan[1];
view.GetSelectionSpan(pSpan);
this.selection = pSpan[0];
this.view = view;
}
this.ca = CompoundActionFactory.GetCompoundAction(this.view, this.source, description);
this.ca.FlushEditActions();
// Sanity check - make sure others are not modifying the buffer while the
// caller is preparing the big edit operation.
this.changeCount = source.ChangeCount;
}
/// <include file='doc\Source.uex' path='docs/doc[@for="Completor.Apply"]/*' />
public void Apply()
{
string text = sb.ToString();
NativeMethods.ThrowOnFailure(view.ReplaceTextOnLine(span.iStartLine, span.iStartIndex, span.iEndIndex - span.iStartIndex, text, text.Length));
this.ca.Close(); // make sure we see a consistent coordinate system.
this.ca = null;
// move caret position
// todo: what if a newline was typed (e.g. an attribute value enumeration contains a new line) ??
NativeMethods.ThrowOnFailure(view.SetCaretPos(span.iStartLine, span.iStartIndex + caret));
}
/// <include file='doc\Source.uex' path='docs/doc[@for="Completor.Completor"]/*' />
public Completor(LanguageService langsvc, IVsTextView view, string description)
{
this.langsvc = langsvc;
this.view = view;
this.src = langsvc.GetSource(view);
this.sb = new StringBuilder();
this.caret = 0; // current position within StringBuilder.
this.ca = CompoundActionFactory.GetCompoundAction(null, this.src, description);
this.ca.FlushEditActions(); // make sure we see a consistent coordinate system.
// initialize span representing what we are removing from the buffer.
NativeMethods.ThrowOnFailure(view.GetCaretPos(out span.iStartLine, out span.iStartIndex));
this.span.iEndLine = span.iStartLine;
this.span.iEndIndex = span.iStartIndex;
RefreshLine();
macro = this.langsvc.GetIVsTextMacroHelperIfRecordingOn();
}
private void Dispose(bool disposing)
{
if (ca != null) {
ca.Close();
ca = null;
}
view = null;
source = null;
}
/// <include file='doc\EditArray.uex' path='docs/doc[@for="EditArray.ApplyEdits"]/*' />
public void ApplyEdits()
{
try {
if (this.editList.Count == 0) return;
if (this.changeCount != this.source.ChangeCount) {
throw new InvalidOperationException(SR.GetString(SR.BufferChanged));
}
using (this.ca) {
Apply();
ca.FlushEditActions();
}
this.ca = null;
if (this.view != null) {
// Update selection.
this.view.SetSelection(this.selection.iStartLine, this.selection.iStartIndex, this.selection.iEndLine, this.selection.iEndIndex);
this.view.EnsureSpanVisible(this.selection);
}
} finally {
// If compound actions are not null then we need to abort them.
Dispose();
}
}
