private DaxLineState ParseLine()
{
//Log.Debug("{class} {method} {message}", "DaxIntellisenseProvider", "ParseLine", "start");
string line = GetCurrentLine();
int pos = _editor.CaretOffset > 0 ? _editor.CaretOffset - 1 : 0;
var loc = _editor.DocumentGetLocation(pos);
var docLine = _editor.DocumentGetLineByOffset(pos);
Log.Debug("{class} {method} {line} col:{column} off:{offset}", "DaxIntellisenseProvider", "ParseLine", line, loc.Column, docLine.Offset);
return(DaxLineParser.ParseLine(line, loc.Column, docLine.Offset));
}
private string GetPreceedingTableName()
{
string tableName = "";
try
{
string line = GetCurrentLine();
tableName = DaxLineParser.GetPreceedingTableName(line);
}
catch (Exception ex)
{
Log.Error("{class} {method} {error}", "DaxIntellisenseProvider", "GetPreceedingTableName", ex.Message);
}
return(tableName);
}
void completionWindow_Closing(object sender, System.ComponentModel.CancelEventArgs e)
{
// cancel closing if part way into a table or column name
var lineState = ParseLine();
if (SpacePressed && (lineState.LineState == LineState.Column || lineState.LineState == LineState.Table))
{
e.Cancel = true;
}
var line = GetCurrentLine();
if (line.EndsWith("("))
{
var funcName = DaxLineParser.GetPreceedingWord(line.TrimEnd('('));
ShowInsight(funcName);
}
}
private LinePosition GetPreceedingWordSegment(IDocument document, ISegment completionSegment)
{
string line = "";
int pos = completionSegment.EndOffset - 1;
var loc = document.GetLocation(pos);
Log.Debug("{class} {method} pos:{position}", "DaxCompletionData", "GetPreceedingWordSegment", pos);
var docLine = document.GetLineByOffset(pos);
//line = textArea.Document.GetText(docLine.Offset, loc.Column);
line = document.GetText(docLine.Offset, docLine.Length);
Log.Verbose("{class} {method} {message}", "DaxCompletionData", "GetPreceedingWordSegment", "line: " + line);
var daxState = DaxLineParser.ParseLine(line, loc.Column, 0);
//TODO - look ahead to see if we have a table/column/function end character that we should replace upto
return(DaxLineParser.GetPreceedingWordSegment(docLine.Offset, loc.Column, line, daxState));
}
public void ProcessTextEntered(object sender, System.Windows.Input.TextCompositionEventArgs e, ref ICSharpCode.AvalonEdit.CodeCompletion.CompletionWindow completionWindow)
{
if (HasThrownException)
{
return; // exit here if intellisense has previous thrown and exception
}
try
{
if (completionWindow != null)
{
// close the completion window if it has no items
if (!completionWindow.CompletionList.ListBox.HasItems)
{
completionWindow.Close();
return;
}
// close the completion window if the current text is a 100% match for the current item
var txt = ((TextArea)sender).Document.GetText(new TextSegment()
{
StartOffset = completionWindow.StartOffset, EndOffset = completionWindow.EndOffset
});
var selectedItem = completionWindow.CompletionList.SelectedItem;
if (string.Compare(selectedItem.Text, txt, true) == 0 || string.Compare(selectedItem.Content.ToString(), txt, true) == 0)
{
completionWindow.Close();
}
return;
}
if (char.IsLetterOrDigit(e.Text[0]) || "\'[".Contains(e.Text[0]))
{
// exit if the completion window is already showing
if (completionWindow != null)
{
return;
}
// exit if we are inside a string or comment
_daxState = ParseLine();
var lineState = _daxState.LineState;
if (lineState == LineState.String || _editor.IsInComment())
{
return;
}
// don't show intellisense if we are in the measure name of a DEFINE block
if (DaxLineParser.IsLineMeasureDefinition(GetCurrentLine()))
{
return;
}
// TODO add insights window for Function parameters
//InsightWindow insightWindow = new InsightWindow(sender as ICSharpCode.AvalonEdit.Editing.TextArea);
completionWindow = new CompletionWindow(sender as ICSharpCode.AvalonEdit.Editing.TextArea);
completionWindow.CloseAutomatically = false;
completionWindow.CompletionList.BorderThickness = new System.Windows.Thickness(1);
if (char.IsLetterOrDigit(e.Text[0]))
{
// if the window was opened by a letter or digit include it in the match segment
//completionWindow.StartOffset -= 1;
completionWindow.StartOffset = _daxState.StartOffset;
System.Diagnostics.Debug.WriteLine("Setting Completion Offset: {0}", _daxState.StartOffset);
}
IList <ICompletionData> data = completionWindow.CompletionList.CompletionData;
switch (e.Text)
{
case "[":
string tableName = GetPreceedingTableName();
if (string.IsNullOrWhiteSpace(tableName))
{
PopulateCompletionData(data, IntellisenseMetadataTypes.Measures);
}
else
{
PopulateCompletionData(data, IntellisenseMetadataTypes.Columns, _daxState);
}
break;
case "'":
PopulateCompletionData(data, IntellisenseMetadataTypes.Tables);
break;
default:
switch (_daxState.LineState)
{
case LineState.Column:
PopulateCompletionData(data, IntellisenseMetadataTypes.Columns, _daxState);
break;
case LineState.Table:
PopulateCompletionData(data, IntellisenseMetadataTypes.Tables, _daxState);
break;
case LineState.Measure:
PopulateCompletionData(data, IntellisenseMetadataTypes.Measures);
break;
case LineState.Dmv:
PopulateCompletionData(data, IntellisenseMetadataTypes.DMV);
break;
default:
PopulateCompletionData(data, IntellisenseMetadataTypes.ALL);
break;
}
break;
}
if (data.Count > 0)
{
//var line = GetCurrentLine();
//System.Diagnostics.Debug.Assert(line.Length >= _daxState.EndOffset);
var txt = _editor.DocumentGetText(new TextSegment()
{
StartOffset = _daxState.StartOffset, EndOffset = _daxState.EndOffset
});
//var txt = line.Substring(_daxState.StartOffset,_daxState.EndOffset - _daxState.StartOffset);
completionWindow.CompletionList.SelectItem(txt);
// only show the completion window if we have valid items to display
if (completionWindow.CompletionList.ListBox.HasItems)
{
Log.Verbose("InsightWindow == null : {IsNull}", _editor.InsightWindow == null);
if (_editor.InsightWindow != null && _editor.InsightWindow.IsVisible)
{
Log.Verbose("hiding insight window");
_editor.InsightWindow.Visibility = Visibility.Collapsed;
//_editor.InsightWindow = null;
}
Log.Verbose("CW null: {CompletionWindowNull} CW.Vis: {CompletionWindowVisible} IW null: {insightWindowNull} IW.Vis: {InsightWindowVisible}", completionWindow == null, completionWindow.Visibility.ToString(), _editor.InsightWindow == null, completionWindow.Visibility.ToString());
completionWindow.Show();
completionWindow.Closing += completionWindow_Closing;
completionWindow.PreviewKeyUp += completionWindow_PreviewKeyUp;
completionWindow.Closed += delegate
{
_editor.DisposeCompletionWindow();
};
}
else
{
Log.Debug("{class} {method} {message}", "DaxIntellisenseProvider", "ProcessTextEntered", "Closing CompletionWindow as it has no matching items");
completionWindow.Close();
_editor.DisposeCompletionWindow();
completionWindow = null;
}
}
else
{
_editor.DisposeCompletionWindow();
completionWindow = null;
}
}
if (e.Text[0] == '(')
{
var funcName = DaxLineParser.GetPreceedingWord(GetCurrentLine().TrimEnd('(').Trim()).ToLower();
Log.Verbose("Func: {Function}", funcName);
ShowInsight(funcName);
}
}
catch (Exception ex)
{
HasThrownException = true;
Log.Error("{class} {method} {exception} {stacktrace}", "DaxIntellisenseProvider", "ProcessTextEntered", ex.Message, ex.StackTrace);
Document.OutputError(string.Format("Intellisense Disabled for this window - {0}", ex.Message));
}
}
