//--------------------------------------------------------------------------------------------------
protected override void OnKeyDown(KeyEventArgs e)
{
if (e.Key == Key.Return)
{
CommitTextChange();
TraversalRequest tRequest = new TraversalRequest(FocusNavigationDirection.Next);
UIElement keyboardFocus = Keyboard.FocusedElement as UIElement;
keyboardFocus?.MoveFocus(tRequest);
e.Handled = true;
}
else if ((e.Key == Key.OemPeriod) || (e.Key == Key.OemComma) || (e.Key == Key.Decimal))
{
if (Text.Contains(".") && !IsEvaluating)
{
e.Handled = true;
}
}
else if ((e.Key == Key.OemMinus) || (e.Key == Key.Subtract))
{
if ((CaretIndex != 0 && SelectionStart != 0 ||
Text.Contains("-") && !SelectedText.Contains("-")) &&
!IsEvaluating)
{
e.Handled = true;
}
}
base.OnKeyDown(e);
}
/// <summary>
/// Start a new search
/// </summary>
public string getSearchTerm()
{
// If no text is selected, select the word
if (SelectedText.Length == 0)
{
int wordStart = SelectionStart;
while (wordStart > 0 && IsWordChar(Text[wordStart - 1]))
{
wordStart--;
}
int wordEnd = SelectionStart;
while (wordEnd < Text.Length && IsWordChar(Text[wordEnd]))
{
wordEnd++;
}
return(Text.Substring(wordStart, wordEnd - wordStart));
}
else if (!SelectedText.Contains("\n")) // if selection is single line, use that as default
{
return(SelectedText);
}
else
{
return(null);
}
}
private void SaveText(object commandParameter)
{
string tempSelectedText = "";
foreach (var item in BranchItemCheckedStates)
{
string tempBranchItemName = "[" + item.BranchItem.BranchItemName + "]";
if (SelectedText.Contains(tempBranchItemName))
{
tempSelectedText += tempBranchItemName + "; ";
}
}
SelectedText = tempSelectedText;
}
/*
* /// <summary>
* /// Overriden Undo to undo replace operations
* /// </summary>
* /// <remarks>
* /// Would be a lot simpler if the framework controls gave you access to their undo stack
* /// </remarks>
* public new void Undo()
* {
* if (Text.Equals(textAfterReplace))
* {
* Text = textBeforeReplace;
* }
* else
* {
* // Call ordinary undo
* base.Undo();
* }
* }
*/
/*
* /// <summary>
* /// Overridden CanUndo to include local undo operation
* /// </summary>
* public new bool CanUndo
* {
* get
* {
* if (Text.Equals(textAfterReplace))
* {
* return true; // Next undo would be our replace cancel operation
* }
* else
* {
* // Call ordinary CanUndo
* return base.CanUndo;
* }
* }
* }
* */
/*
* /// <summary>
* /// Redo to redo replace operations
* /// </summary>
* public void Redo()
* {
* if (Text.Equals(textBeforeReplace))
* {
* Text = textAfterReplace;
* }
*
* }
* */
/// <summary>
/// Start a new search
/// </summary>
private void NewSearch(bool replaceMode)
{
// If no text is selected, select the word
if (SelectedText.Length == 0)
{
int wordStart = SelectionStart;
while (wordStart > 0 && IsWordChar(Text[wordStart - 1]))
{
wordStart--;
}
int wordEnd = SelectionStart;
while (wordEnd < Text.Length && IsWordChar(Text[wordEnd]))
{
wordEnd++;
}
// Store the selection start position on the first search so that when all searches are complete
// this fact can be reported to the user in the find dialog.
originalSelectionStart = wordEnd; // matching behaviour of various MS apps
if (searchStarted != null)
{
searchStarted(Text.Substring(wordStart, wordEnd - wordStart));
}
findDialog1.Show(Text.Substring(wordStart, wordEnd - wordStart), replaceMode);
}
else if (!SelectedText.Contains("\n")) // if selection is single line, use that as default
{
originalSelectionStart = SelectionStart; // matching behaviour of various MS apps
if (searchStarted != null)
{
searchStarted(SelectedText);
}
findDialog1.Show(SelectedText, replaceMode);
}
else
{
originalSelectionStart = SelectionStart;
if (searchStarted != null)
{
searchStarted(SelectedText);
}
findDialog1.Show(replaceMode);
}
}
protected override void OnKeyPress(KeyPressEventArgs e)
{
if (e.KeyChar == '\t' && SelectedText.Contains(Environment.NewLine))
{
string start = string.Empty;
if (SelectionStart > 0)
{
start = Text.Substring(0, SelectionStart);
}
string exchange = Text.Substring(SelectionStart, SelectionLength);
string end = string.Empty;
if (SelectionStart + SelectionLength < Text.Length - 1)
{
end = Text.Substring(SelectionStart + SelectionLength);
}
Text = start + '\t' +
exchange.Replace(Environment.NewLine, Environment.NewLine + "\t") +
end;
e.Handled = true;
}
base.OnKeyPress(e);
}
//--------------------------------------------------------------------------------------------------
protected override void OnTextChanged(TextChangedEventArgs e)
{
using (DeclareChangeBlock())
{
foreach (var c in e.Changes)
{
if (c.AddedLength == 0)
{
continue;
}
Select(c.Offset, c.AddedLength);
if (SelectedText.Contains(","))
{
SelectedText = SelectedText.Replace(',', '.');
}
Select(c.Offset + c.AddedLength, 0);
}
}
var text = Text;
if (text.Length == 0)
{
Text = "0";
}
else
{
if (text[0] == '.')
{
Text.Insert(0, "0");
}
}
EvaluateExpression();
base.OnTextChanged(e);
}
protected override void OnPreviewKeyDown(KeyEventArgs e)
{
if (IsReadOnly)
{
return;
}
backspaceAction = 0;
string keyPressed = _keyConv.ConvertToString(e.Key);
if (!(keyPressed == "Space" || keyPressed == "Delete" || keyPressed == "Backspace" || keyPressed == "Down" || keyPressed == "Up"))
{
base.OnPreviewKeyDown(e);
return;
}
if (keyPressed != null)
{
isCellValueChanged = true;
if (keyPressed.Length == 1 && char.IsControl(keyPressed[0]))
{
e.Handled = false;
}
if (keyPressed == "Space")
{
if (SelectionLength == Convert.ToString(Text).Length)
{
Clear();
e.Handled = true;
}
}
int selectionStart = SelectionStart;
dotPosition = Text.IndexOf('.');
if (keyPressed == "Delete")
{
if (Text.Length > 0 &&
(SelectedText.Contains(".") || (SelectedText.Length == 0 && SelectionStart == dotPosition)) &&
Text.Length != SelectionLength)
{
Text = Text.Substring(0, Math.Min(selectionStart, Text.Length));
SelectionStart = Math.Min(selectionStart, Text.Length);
e.Handled = true;
}
}
else if (keyPressed == "Backspace")
{
if (Text.Length > 0 && (SelectedText.Contains(".") || (SelectedText.Length == 0 && SelectionStart - 1 == dotPosition)) && Text.Length != SelectionLength)
{
Text = Text.Substring(0, Math.Min(selectionStart, Text.Length));
if (SelectedText.Length == 0 && selectionStart - 1 == dotPosition && selectionStart - 1 >= 0)
{
SelectionStart = Math.Min(selectionStart - 1, Text.Length);
}
else
{
SelectionStart = Math.Min(selectionStart, Text.Length);
}
e.Handled = true;
}
else
{
backspaceAction = 1;
}
}
else if ((keyPressed == "Down") && dotPosition > 0)
{
SelectionStart = hasDecimalChar ? dotPosition + 1 : 0;
SelectionLength = hasDecimalChar ? MaxScale : 0;
e.Handled = hasDecimalChar;
return;
}
else if ((keyPressed == "Up") && dotPosition > 0)
{
dotPosition = Text.IndexOf('.');
string currentPrecisionText = "";
string currentScaleText = "";
if (hasDecimalChar)
{
currentPrecisionText = Text.Substring(0, dotPosition);
currentScaleText = Text.Substring(dotPosition + 1);
}
SelectionStart = 0;
SelectionLength = hasDecimalChar ? Math.Min(dotPosition, currentPrecisionText.Length) : 0;
e.Handled = hasDecimalChar;
return;
}
}
base.OnPreviewKeyDown(e);
}
protected override void OnKeyPress(KeyPressEventArgs e)
{
if (e.KeyChar == '\b' || e.KeyChar == 22 || e.KeyChar == 1 || e.KeyChar == 3)
{
return;
}
if (e.KeyChar == '.')
{
if (Text.Contains(".") && !SelectedText.Contains("."))
{
e.Handled = true;
return;
}
}
else if (e.KeyChar == '-')
{
if (Text.Contains("-") && !SelectedText.Contains("-"))
{
e.Handled = true;
return;
}
}
switch (_type)
{
default:
case DisplayType.Binary:
if (!e.KeyChar.IsBinary())
{
e.Handled = true;
}
break;
case DisplayType.FixedPoint_12_4:
case DisplayType.FixedPoint_20_12:
case DisplayType.FixedPoint_16_16:
if (!e.KeyChar.IsFixedPoint())
{
e.Handled = true;
}
break;
case DisplayType.Float:
if (!e.KeyChar.IsFloat())
{
e.Handled = true;
}
break;
case DisplayType.Hex:
if (!e.KeyChar.IsHex())
{
e.Handled = true;
}
break;
case DisplayType.Signed:
if (!e.KeyChar.IsSigned())
{
e.Handled = true;
}
break;
case DisplayType.Unsigned:
if (!e.KeyChar.IsUnsigned())
{
e.Handled = true;
}
break;
}
}
protected override void OnPreviewKeyDown(KeyEventArgs e)
{
if (IsManagingInput)
{
NegativeIntegerPending = false;
NegativeFractionPending = false;
switch (e.Key)
{
case Key.OemPeriod:
case Key.Decimal:
// If the user typed a period and we're to the left of the decimal point, skip over the decimal point
if (CaretIndex < Text.Length && Text[CaretIndex] == DecimalSeparator)
{
CaretIndex++;
e.Handled = true;
}
// Or if there is already a decimal point, don't add a second one
// (If user is replacing the part that includes the decimal point, accept it)
else if (Text.Contains(DecimalSeparator.ToString()) && !SelectedText.Contains(DecimalSeparator.ToString()))
{
e.Handled = true;
}
break;
case Key.Back:
// If the user pressed Backspace and we're to the right of the only decimal point, skip over the decimal point
if (CaretIndex > 0 && CaretIndex <= Text.Length && Text[CaretIndex - 1] == DecimalSeparator && Text.HasOnlyOne(DecimalSeparator))
{
CaretIndex--;
e.Handled = true;
}
break;
case Key.Delete:
// If the user pressed Delete and we're to the left of the only decimal point, skip over the decimal point
if (CaretIndex < Text.Length && Text[CaretIndex] == DecimalSeparator && Text.HasOnlyOne(DecimalSeparator))
{
CaretIndex++;
e.Handled = true;
}
break;
case Key.D0:
case Key.NumPad0:
case Key.D1:
case Key.NumPad1:
case Key.D2:
case Key.NumPad2:
case Key.D3:
case Key.NumPad3:
case Key.D4:
case Key.NumPad4:
case Key.D5:
case Key.NumPad5:
case Key.D6:
case Key.NumPad6:
case Key.D7:
case Key.NumPad7:
case Key.D8:
case Key.NumPad8:
case Key.D9:
case Key.NumPad9:
if (RequireNegativeHandling)
{
// If a new negative number is being formed, remember that state so we can correct
// the carat position after the text is updated
if (Text == "-")
{
NegativeIntegerPending = true;
}
else if (Text == "-.")
{
NegativeFractionPending = true;
}
}
break;
case Key.OemMinus:
case Key.Subtract:
// Only accept a negative sign if:
// - We are at the beginning of the number and there is not already a negative sign there, or
// - The user has highlighted the entire number, so it is all going to be replaced
// NOTE: TextBox does not allow you to enter -0.0, not sure how to override that...
if (!((CaretIndex == 0 && Text.IndexOf('-') == -1) ||
SelectionLength == Text.Length))
{
e.Handled = true;
}
break;
}
}
base.OnPreviewKeyDown(e);
}
protected override void OnPreviewKeyDown(KeyEventArgs e)
{
if (_suggestionList.IsVisible && e.Key.In(Key.Tab, Key.Enter, Key.Return))
{
var selectedItem = (Suggestion)_suggestionList.SelectedItem;
if (selectedItem != null)
{
var selectedText = selectedItem.Completion;
var index = CaretIndex;
Text = Text.Insert(CaretIndex, selectedText);
CaretIndex = index + selectedText.Length;
}
HideSuggestionList();
e.Handled = true;
return;
}
if (e.Key == Key.Escape)
{
HideSuggestionList();
e.Handled = true;
}
if (ShouldShowSuggestionList(e))
{
SyntaxParser.FindSuggestions(Text, SelectionStart);
ShowSuggestionList();
e.Handled = true;
}
if (e.Key == Key.Tab && e.KeyboardDevice.Modifiers == ModifierKeys.Shift)
{
// with selected text
if (SelectedText != string.Empty)
{
string[] lines = SelectedText.SplitLines();
for (int ii = 0; ii < lines.Length; ii++)
{
if (lines[ii].StartsWith(Tab))
{
lines[ii] = lines[ii].Substring(Tab.Length);
}
else
{
lines[ii] = lines[ii].TrimStart(' ');
}
}
SelectedText = String.Join(Environment.NewLine, lines);
}
else
{
var index = CaretIndex;
var lastLine = Text.LastIndexOf(Environment.NewLine, index, StringComparison.Ordinal);
if (lastLine == -1)
{
lastLine = Text.Length - 1;
}
var startLine = Text.IndexOf(Environment.NewLine, lastLine, StringComparison.Ordinal);
if (startLine != -1)
{
startLine += Environment.NewLine.Length;
}
else
{
startLine = 0;
}
// find empty spaces
var spaces = 0;
for (var i = startLine; i < Text.Length - 1; i++)
{
if (Text[i] == ' ')
{
spaces++;
}
else
{
break;
}
}
if (spaces > TabSize)
{
spaces = TabSize;
}
Text = Text.Remove(startLine, spaces);
// set position of caret
if (index >= startLine + spaces)
{
CaretIndex = index - spaces;
}
else if (index >= startLine && index < startLine + spaces)
{
CaretIndex = startLine;
}
else
{
CaretIndex = index;
}
}
e.Handled = true;
}
// tab
if (e.Key == Key.Tab && e.KeyboardDevice.Modifiers == ModifierKeys.None)
{
if (SelectedText == string.Empty)
{
var caretPosition = CaretIndex;
Text = Text.Insert(caretPosition, Tab);
CaretIndex = caretPosition + TabSize;
}
else
{
if (!SelectedText.Contains(Environment.NewLine))
{
SelectedText = Tab;
}
else
{
SelectedText = Tab + SelectedText.Replace(Environment.NewLine, Environment.NewLine + Tab);
}
}
e.Handled = true;
}
// enter respects indenting
if (e.Key == Key.Return)
{
var index = CaretIndex;
var lastLine = Text.LastIndexOf(Environment.NewLine, index, StringComparison.Ordinal);
var spaces = 0;
if (lastLine != -1)
{
var line = Text.Substring(lastLine, Text.Length - lastLine);
var startLine = line.IndexOf(Environment.NewLine, StringComparison.Ordinal);
if (startLine != -1)
{
line = line.Substring(startLine).TrimStart('\r', '\n');
}
foreach (var c in line)
{
if (c == ' ')
{
spaces++;
}
else
{
break;
}
}
}
Text = Text.Insert(index, Environment.NewLine + new String(' ', spaces));
CaretIndex = index + Environment.NewLine.Length + spaces;
e.Handled = true;
}
base.OnPreviewKeyDown(e);
}
protected override void OnKeyPress(KeyPressEventArgs e)
{
base.OnKeyPress(e);
if (e.KeyChar == '.' || e.KeyChar == ',')
{
e.KeyChar = CultureInfo.CurrentCulture.NumberFormat.NumberDecimalSeparator[0];
}
if (e.KeyChar != 22)
{
e.Handled = !char.IsDigit(e.KeyChar) && (e.KeyChar != ',' || (Text.Contains(",") && !SelectedText.Contains(","))) && e.KeyChar != (char)Keys.Back && (e.KeyChar != '-' || SelectionStart != 0 || (Text.Contains("-") && !SelectedText.Contains("-")));
}
}
