private void PossibleCompletionsImpl(CommandCompletion completions, bool menuSelect)
{
if (completions == null || completions.CompletionMatches.Count == 0)
{
Ding();
return;
}
if (completions.CompletionMatches.Count >= _options.CompletionQueryItems)
{
if (!PromptYesOrNo(string.Format(CultureInfo.CurrentCulture, PSReadLineResources.DisplayAllPossibilities, completions.CompletionMatches.Count)))
{
return;
}
}
var matches = completions.CompletionMatches;
var minColWidth = matches.Max(c => c.ListItemText.Length);
minColWidth += 2;
var menuColumnWidth = minColWidth;
int displayRows;
var bufferWidth = Console.BufferWidth;
ConsoleBufferBuilder cb;
if (Options.ShowToolTips)
{
const string seperator = "- ";
var maxTooltipWidth = bufferWidth - minColWidth - seperator.Length;
displayRows = matches.Count;
cb = new ConsoleBufferBuilder(displayRows * bufferWidth);
for (int index = 0; index < matches.Count; index++)
{
var match = matches[index];
var listItemText = HandleNewlinesForPossibleCompletions(match.ListItemText);
cb.Append(listItemText);
var spacesNeeded = minColWidth - listItemText.Length;
if (spacesNeeded > 0)
{
cb.Append(' ', spacesNeeded);
}
cb.Append(seperator);
var toolTip = HandleNewlinesForPossibleCompletions(match.ToolTip);
toolTip = toolTip.Length <= maxTooltipWidth
? toolTip
: toolTip.Substring(0, maxTooltipWidth);
cb.Append(toolTip);
// Make sure we always write out exactly 1 buffer width
spacesNeeded = (bufferWidth * (index + 1)) - cb.Length;
if (spacesNeeded > 0)
{
cb.Append(' ', spacesNeeded);
}
}
menuColumnWidth = bufferWidth;
}
else
{
var screenColumns = bufferWidth;
var displayColumns = Math.Max(1, screenColumns / minColWidth);
displayRows = (completions.CompletionMatches.Count + displayColumns - 1) / displayColumns;
cb = new ConsoleBufferBuilder(displayRows * bufferWidth);
for (var row = 0; row < displayRows; row++)
{
for (var col = 0; col < displayColumns; col++)
{
var index = row + (displayRows * col);
if (index >= matches.Count)
break;
var match = matches[index];
var item = HandleNewlinesForPossibleCompletions(match.ListItemText);
cb.Append(item);
cb.Append(' ', minColWidth - item.Length);
}
// Make sure we always write out exactly 1 buffer width
var spacesNeeded = (bufferWidth * (row + 1)) - cb.Length;
if (spacesNeeded > 0)
{
cb.Append(' ', spacesNeeded);
}
}
}
var menuBuffer = cb.ToArray();
if (menuSelect)
{
// Make sure the menu and line can appear on the screen at the same time,
// if not, we'll skip the menu.
var endBufferCoords = ConvertOffsetToCoordinates(_buffer.Length);
var bufferLines = endBufferCoords.Y - _initialY + 1;
if ((bufferLines + displayRows) > Console.WindowHeight)
{
menuSelect = false;
}
}
if (menuSelect)
{
RemoveEditsAfterUndo();
var undoPoint = _edits.Count;
int selectedItem = 0;
bool undo = false;
DoReplacementForCompletion(matches[0], completions);
// Recompute end of buffer coordinates as the replacement could have
// added a line.
var endBufferCoords = ConvertOffsetToCoordinates(_buffer.Length);
var menuAreaTop = endBufferCoords.Y + 1;
var previousMenuTop = menuAreaTop;
InvertSelectedCompletion(menuBuffer, selectedItem, menuColumnWidth, displayRows);
WriteBufferLines(menuBuffer, ref menuAreaTop);
// Showing the menu may have scrolled the screen or moved the cursor, update initialY to reflect that.
_initialY -= (previousMenuTop - menuAreaTop);
PlaceCursor();
previousMenuTop = menuAreaTop;
int previousItem = selectedItem;
bool processingKeys = true;
while (processingKeys)
{
var nextKey = ReadKey();
if (nextKey == Keys.RightArrow)
{
selectedItem = Math.Min(selectedItem + displayRows, matches.Count - 1);
}
else if (nextKey == Keys.LeftArrow)
{
selectedItem = Math.Max(selectedItem - displayRows, 0);
}
else if (nextKey == Keys.DownArrow)
{
selectedItem = Math.Min(selectedItem + 1, matches.Count - 1);
}
else if (nextKey == Keys.UpArrow)
{
selectedItem = Math.Max(selectedItem - 1, 0);
}
else if (nextKey == Keys.Tab)
{
selectedItem = (selectedItem + 1) % matches.Count;
}
else if (nextKey == Keys.ShiftTab)
{
selectedItem = (selectedItem - 1) % matches.Count;
if (selectedItem < 0)
{
selectedItem += matches.Count;
}
}
else if (nextKey == Keys.CtrlG || nextKey == Keys.Escape)
{
undo = true;
processingKeys = false;
}
else
{
PrependQueuedKeys(nextKey);
processingKeys = false;
}
if (selectedItem != previousItem)
{
DoReplacementForCompletion(matches[selectedItem], completions);
endBufferCoords = ConvertOffsetToCoordinates(_buffer.Length);
menuAreaTop = endBufferCoords.Y + 1;
InvertSelectedCompletion(menuBuffer, previousItem, menuColumnWidth, displayRows);
InvertSelectedCompletion(menuBuffer, selectedItem, menuColumnWidth, displayRows);
WriteBufferLines(menuBuffer, ref menuAreaTop);
previousItem = selectedItem;
if (previousMenuTop > menuAreaTop)
{
WriteBlankLines(previousMenuTop - menuAreaTop, menuAreaTop + displayRows);
}
}
}
WriteBlankLines(displayRows, menuAreaTop);
var lastInsert = ((GroupedEdit)_edits[_edits.Count - 1])._groupedEditItems[1];
Debug.Assert(lastInsert is EditItemInsertString, "The only edits possible here are pairs of Delete/Insert");
var firstDelete = ((GroupedEdit)_edits[undoPoint])._groupedEditItems[0];
Debug.Assert(firstDelete is EditItemDelete, "The only edits possible here are pairs of Delete/Insert");
var groupEditCount = _edits.Count - undoPoint;
_edits.RemoveRange(undoPoint, groupEditCount);
_undoEditIndex = undoPoint;
if (undo)
{
// Pretend it never happened.
lastInsert.Undo();
firstDelete.Undo();
Render();
}
else
{
// Leave one edit instead of possibly many to undo
SaveEditItem(GroupedEdit.Create(new List<EditItem> { firstDelete, lastInsert }));
}
}
else
{
var endBufferCoords = ConvertOffsetToCoordinates(_buffer.Length);
var menuAreaTop = endBufferCoords.Y + 1;
WriteBufferLines(menuBuffer, ref menuAreaTop);
_initialY = menuAreaTop + displayRows;
Render();
}
}
private void PossibleCompletionsImpl(CommandCompletion completions, bool menuSelect)
{
if (completions == null || completions.CompletionMatches.Count == 0)
{
Ding();
return;
}
if (completions.CompletionMatches.Count >= _options.CompletionQueryItems)
{
if (!PromptYesOrNo(string.Format(CultureInfo.CurrentCulture, PSReadLineResources.DisplayAllPossibilities, completions.CompletionMatches.Count)))
{
return;
}
}
var matches = completions.CompletionMatches;
var minColWidth = matches.Max(c => c.ListItemText.Length);
minColWidth += 2;
var menuColumnWidth = minColWidth;
int displayRows;
var bufferWidth = Console.BufferWidth;
ConsoleBufferBuilder cb;
if (Options.ShowToolTips)
{
const string seperator = "- ";
var maxTooltipWidth = bufferWidth - minColWidth - seperator.Length;
displayRows = matches.Count;
cb = new ConsoleBufferBuilder(displayRows * bufferWidth);
for (int index = 0; index < matches.Count; index++)
{
var match = matches[index];
var listItemText = HandleNewlinesForPossibleCompletions(match.ListItemText);
cb.Append(listItemText);
var spacesNeeded = minColWidth - listItemText.Length;
if (spacesNeeded > 0)
{
cb.Append(' ', spacesNeeded);
}
cb.Append(seperator);
var toolTip = HandleNewlinesForPossibleCompletions(match.ToolTip);
toolTip = toolTip.Length <= maxTooltipWidth
? toolTip
: toolTip.Substring(0, maxTooltipWidth);
cb.Append(toolTip);
// Make sure we always write out exactly 1 buffer width
spacesNeeded = (bufferWidth * (index + 1)) - cb.Length;
if (spacesNeeded > 0)
{
cb.Append(' ', spacesNeeded);
}
}
menuColumnWidth = bufferWidth;
}
else
{
var screenColumns = bufferWidth;
var displayColumns = Math.Max(1, screenColumns / minColWidth);
displayRows = (completions.CompletionMatches.Count + displayColumns - 1) / displayColumns;
cb = new ConsoleBufferBuilder(displayRows * bufferWidth);
for (var row = 0; row < displayRows; row++)
{
for (var col = 0; col < displayColumns; col++)
{
var index = row + (displayRows * col);
if (index >= matches.Count)
{
break;
}
var match = matches[index];
var item = HandleNewlinesForPossibleCompletions(match.ListItemText);
cb.Append(item);
cb.Append(' ', minColWidth - item.Length);
}
// Make sure we always write out exactly 1 buffer width
var spacesNeeded = (bufferWidth * (row + 1)) - cb.Length;
if (spacesNeeded > 0)
{
cb.Append(' ', spacesNeeded);
}
}
}
var menuBuffer = cb.ToArray();
if (menuSelect)
{
// Make sure the menu and line can appear on the screen at the same time,
// if not, we'll skip the menu.
var endBufferCoords = ConvertOffsetToCoordinates(_buffer.Length);
var bufferLines = endBufferCoords.Y - _initialY + 1;
if ((bufferLines + displayRows) > Console.WindowHeight)
{
menuSelect = false;
}
}
if (menuSelect)
{
RemoveEditsAfterUndo();
var undoPoint = _edits.Count;
int selectedItem = 0;
bool undo = false;
DoReplacementForCompletion(matches[0], completions);
// Recompute end of buffer coordinates as the replacement could have
// added a line.
var endBufferCoords = ConvertOffsetToCoordinates(_buffer.Length);
var menuAreaTop = endBufferCoords.Y + 1;
var previousMenuTop = menuAreaTop;
InvertSelectedCompletion(menuBuffer, selectedItem, menuColumnWidth, displayRows);
WriteBufferLines(menuBuffer, ref menuAreaTop);
// Showing the menu may have scrolled the screen or moved the cursor, update initialY to reflect that.
_initialY -= (previousMenuTop - menuAreaTop);
PlaceCursor();
previousMenuTop = menuAreaTop;
int previousItem = selectedItem;
bool processingKeys = true;
while (processingKeys)
{
var nextKey = ReadKey();
if (nextKey == Keys.RightArrow)
{
selectedItem = Math.Min(selectedItem + displayRows, matches.Count - 1);
}
else if (nextKey == Keys.LeftArrow)
{
selectedItem = Math.Max(selectedItem - displayRows, 0);
}
else if (nextKey == Keys.DownArrow)
{
selectedItem = Math.Min(selectedItem + 1, matches.Count - 1);
}
else if (nextKey == Keys.UpArrow)
{
selectedItem = Math.Max(selectedItem - 1, 0);
}
else if (nextKey == Keys.Tab)
{
selectedItem = (selectedItem + 1) % matches.Count;
}
else if (nextKey == Keys.ShiftTab)
{
selectedItem = (selectedItem - 1) % matches.Count;
if (selectedItem < 0)
{
selectedItem += matches.Count;
}
}
else if (nextKey == Keys.CtrlG || nextKey == Keys.Escape)
{
undo = true;
processingKeys = false;
}
else
{
PrependQueuedKeys(nextKey);
processingKeys = false;
}
if (selectedItem != previousItem)
{
DoReplacementForCompletion(matches[selectedItem], completions);
endBufferCoords = ConvertOffsetToCoordinates(_buffer.Length);
menuAreaTop = endBufferCoords.Y + 1;
InvertSelectedCompletion(menuBuffer, previousItem, menuColumnWidth, displayRows);
InvertSelectedCompletion(menuBuffer, selectedItem, menuColumnWidth, displayRows);
WriteBufferLines(menuBuffer, ref menuAreaTop);
previousItem = selectedItem;
if (previousMenuTop > menuAreaTop)
{
WriteBlankLines(previousMenuTop - menuAreaTop, menuAreaTop + displayRows);
}
}
}
WriteBlankLines(displayRows, menuAreaTop);
var lastInsert = ((GroupedEdit)_edits[_edits.Count - 1])._groupedEditItems[1];
Debug.Assert(lastInsert is EditItemInsertString, "The only edits possible here are pairs of Delete/Insert");
var firstDelete = ((GroupedEdit)_edits[undoPoint])._groupedEditItems[0];
Debug.Assert(firstDelete is EditItemDelete, "The only edits possible here are pairs of Delete/Insert");
var groupEditCount = _edits.Count - undoPoint;
_edits.RemoveRange(undoPoint, groupEditCount);
_undoEditIndex = undoPoint;
if (undo)
{
// Pretend it never happened.
lastInsert.Undo();
firstDelete.Undo();
Render();
}
else
{
// Leave one edit instead of possibly many to undo
SaveEditItem(GroupedEdit.Create(new List <EditItem> {
firstDelete, lastInsert
}));
}
}
else
{
var endBufferCoords = ConvertOffsetToCoordinates(_buffer.Length);
var menuAreaTop = endBufferCoords.Y + 1;
WriteBufferLines(menuBuffer, ref menuAreaTop);
_initialY = menuAreaTop + displayRows;
Render();
}
}
private static CHAR_INFO[] CreateCompletionMenu(System.Collections.ObjectModel.Collection <CompletionResult> matches, IConsole console, bool showToolTips, string currentCompletionText, out int currentCompletionIndex, out int MenuColumnWidth, out int DisplayRows)
{
var minColWidth = matches.Max(c => c.ListItemText.Length);
minColWidth += 2;
var bufferWidth = console.BufferWidth;
var displayColumns = Math.Max(1, bufferWidth / minColWidth);
currentCompletionIndex = 0;
ConsoleBufferBuilder cb;
if (displayColumns == 1 || showToolTips)
{
const string seperator = "- ";
var maxTooltipWidth = bufferWidth - minColWidth - seperator.Length;
// switch off tooltips if it too short
if (maxTooltipWidth < 5)
{
minColWidth = bufferWidth;
showToolTips = false;
}
DisplayRows = matches.Count;
cb = new ConsoleBufferBuilder(DisplayRows * bufferWidth, console);
for (int index = 0; index < matches.Count; index++)
{
var match = matches[index];
if (match.CompletionText.Equals(currentCompletionText))
{
currentCompletionIndex = index;
}
var listItemText = ShortenLongCompletions(HandleNewlinesForPossibleCompletions(match.ListItemText), minColWidth);
cb.Append(listItemText);
var spacesNeeded = minColWidth - listItemText.Length;
if (spacesNeeded > 0)
{
cb.Append(' ', spacesNeeded);
}
if (showToolTips)
{
cb.Append(seperator);
var toolTip = HandleNewlinesForPossibleCompletions(match.ToolTip);
toolTip = toolTip.Length <= maxTooltipWidth
? toolTip
: toolTip.Substring(0, maxTooltipWidth);
cb.Append(toolTip);
}
// Make sure we always write out exactly 1 buffer width
spacesNeeded = (bufferWidth * (index + 1)) - cb.Length;
if (spacesNeeded > 0)
{
cb.Append(' ', spacesNeeded);
}
}
MenuColumnWidth = bufferWidth;
}
else
{
DisplayRows = (matches.Count + displayColumns - 1) / displayColumns;
cb = new ConsoleBufferBuilder(DisplayRows * bufferWidth, console);
for (var row = 0; row < DisplayRows; row++)
{
for (var col = 0; col < displayColumns; col++)
{
var index = row + (DisplayRows * col);
if (index >= matches.Count)
{
break;
}
var match = matches[index];
if (match.CompletionText.Equals(currentCompletionText))
{
currentCompletionIndex = index;
}
var item = HandleNewlinesForPossibleCompletions(match.ListItemText);
cb.Append(item);
cb.Append(' ', minColWidth - item.Length);
}
// Make sure we always write out exactly 1 buffer width
var spacesNeeded = (bufferWidth * (row + 1)) - cb.Length;
if (spacesNeeded > 0)
{
cb.Append(' ', spacesNeeded);
}
}
MenuColumnWidth = minColWidth;
}
return(cb.ToArray());
}
