/// <summary>
/// Text buffer change event handler. Performs analysis of the change.
/// If change is trivial, such as change in whitespace (excluding line
/// breaks that in R may be sensistive), simply applies the changes
/// by shifting tree elements. If some elements get deleted or otherwise
/// damaged, removes them from the tree right away. Non-trivial changes
/// are queued for background parsing which starts on next on idle.
/// Methond must be called on a main thread only, typically from an event
/// handler that receives text buffer change events.
/// </summary>
internal void OnTextChanges(IReadOnlyCollection <TextChangeEventArgs> textChanges)
{
if (Thread.CurrentThread.ManagedThreadId != _ownerThreadId)
{
throw new ThreadStateException("Method should only be called on the main thread");
}
_editorTree.FireOnUpdatesPending(textChanges);
if (UpdatesSuspended)
{
this.TextBufferChangedSinceSuspend = true;
_pendingChanges.FullParseRequired = true;
}
else
{
foreach (TextChangeEventArgs change in textChanges)
{
_lastChangeTime = DateTime.UtcNow;
var context = new TextChangeContext(_editorTree, change, _pendingChanges);
// No need to analyze changes if full parse is already pending
if (!_pendingChanges.FullParseRequired)
{
TextChangeAnalyzer.DetermineChangeType(context);
}
ProcessChange(context);
}
}
}
/// <summary>
/// Text buffer change event handler. Performs analysis of the change.
/// If change is trivial, such as change in whitespace (excluding line
/// breaks that in R may be sensistive), simply applies the changes
/// by shifting tree elements. If some elements get deleted or otherwise
/// damaged, removes them from the tree right away. Non-trivial changes
/// are queued for background parsing which starts on next on idle.
/// Methond must be called on a main thread only, typically from an event
/// handler that receives text buffer change events.
/// </summary>
internal void OnTextChange(TextChangeEventArgs e)
{
Check.InvalidOperation(() => Thread.CurrentThread.ManagedThreadId == _ownerThreadId, _threadCheckMessage);
_editorTree.FireOnUpdatesPending();
if (UpdatesSuspended)
{
TextBufferChangedSinceSuspend = true;
Changes.FullParseRequired = true;
}
else
{
_lastChangeTime = DateTime.UtcNow;
var context = new TextChangeContext(_editorTree, new TreeTextChange(e.Change), Changes);
// No need to analyze changes if full parse is already pending
if (!Changes.FullParseRequired)
{
TextChangeAnalyzer.DetermineChangeType(context);
}
ProcessChange(context);
}
}