/// <summary>
/// Gets the current selection or the word at the caret.
/// </summary>
public static Range GetCodeActionRange(this TextEditor editor)
{
if (editor.IsSomethingSelected)
{
return(new Range {
Start = editor.SelectionRegion.Begin.CreatePosition(),
End = editor.SelectionRegion.End.CreatePosition()
});
}
// Use the word at the caret.
WordAtPosition wordAtPosition = editor.GetWordAtCaret();
if (!wordAtPosition.IsInvalid)
{
return(new Range {
Start = new Position {
Character = wordAtPosition.StartColumn - 1,
Line = editor.CaretLine - 1
},
End = new Position {
Character = wordAtPosition.EndColumn - 1,
Line = editor.CaretLine - 1
}
});
}
// Just use the caret position as the range.
return(new Range {
Start = editor.CaretLocation.CreatePosition(),
End = editor.CaretLocation.CreatePosition()
});
}
string PromptForNewNameForRename()
{
WordAtPosition word = Editor.GetWordAtCaret();
if (word.IsEmpty || word.IsInvalid)
{
return(null);
}
return(RenameItemDialog.PromptForNewName(word.Text));
}
bool ShouldTriggerCompletionOnCharTyped(
WordAtPosition word,
CodeCompletionContext completionContext,
CompletionTriggerInfo triggerInfo)
{
if (session.IsCompletionTriggerCharacter(triggerInfo.TriggerCharacter))
{
return(true);
}
return(ShouldTriggerCompletionAtPosition(word, completionContext));
}
static bool ShouldTriggerCompletionAtPosition(
WordAtPosition word,
CodeCompletionContext completionContext)
{
if (word.IsEmpty)
{
// No word near caret - do not trigger code completion.
return(false);
}
else if (word.EndColumn != completionContext.TriggerLineOffset)
{
// Not at the end of the word. For example, a space was typed after
// the end of the word
return(false);
}
return(true);
}
bool ShouldTriggerCompletion(
WordAtPosition word,
CodeCompletionContext completionContext,
CompletionTriggerInfo triggerInfo)
{
switch (triggerInfo.CompletionTriggerReason)
{
case CompletionTriggerReason.CharTyped:
return(ShouldTriggerCompletionOnCharTyped(word, completionContext, triggerInfo));
case CompletionTriggerReason.BackspaceOrDeleteCommand:
return(ShouldTriggerCompletionAtPosition(word, completionContext));
default:
// Always trigger when Ctrl+Space typed.
return(true);
}
}
public async override Task <ICompletionDataList> HandleCodeCompletionAsync(
CodeCompletionContext completionContext,
CompletionTriggerInfo triggerInfo,
CancellationToken token = default(CancellationToken))
{
if (Editor.EditMode == EditMode.TextLink)
{
return(null);
}
if (!session.IsCompletionProvider)
{
return(null);
}
try {
WordAtPosition word = Editor.GetWordAtPosition(completionContext);
if (!ShouldTriggerCompletion(word, completionContext, triggerInfo))
{
return(null);
}
var completionList = await session.GetCompletionList(fileName, completionContext, this, token);
if (!word.IsEmpty)
{
completionList.TriggerWordLength = word.Length;
completionContext.TriggerLineOffset = word.StartColumn;
}
return(completionList);
} catch (OperationCanceledException) {
// Ignore.
} catch (Exception ex) {
LanguageClientLoggingService.LogError("HandleCodeCompletionAsync error.", ex);
}
return(null);
}
bool IsWordAtCurrentCaretPosition()
{
WordAtPosition word = Editor.GetWordAtCaret();
return(word.IsEmpty);
}
