public void SPropertyChanged(object sender, PropertyChangedEventArgs e)
{
Cell c = (Cell)sender;
if (e.PropertyName == "Text")
{
try
{
//removedep(c);
getCellValue(c);
}
catch (Exception ex)
{
}
CellPropertyChanged?.Invoke(sender, new PropertyChangedEventArgs("Value"));
}
else if (e.PropertyName == "Value")
{
try
{
cascading(c);
}
catch (Exception ex)
{
}
CellPropertyChanged?.Invoke(sender, new PropertyChangedEventArgs("Value"));
}
}
/// <summary>
///
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void OnPropChanged(object sender, PropertyChangedEventArgs e)
{
Cell c = sender as Cell; // makes the sender into a cell and setting a temp value for it
if (e.PropertyName == "Text")
{
UpdateCell(c);
}
CellPropertyChanged?.Invoke(sender, new PropertyChangedEventArgs("Value")); // this is to check if there is an inputted value and will check if there is a property changed
}
/// post: Updates the value of the cell by checking the text
/// object sender - a reference to the control/object that raised the event
/// PropertyChangedEventArgs e - calls e that contains the property change event data
private void OnPropertyChanged(object sender, PropertyChangedEventArgs e)
{
if (e.PropertyName == "Text")
{
if (!((Cell)sender).Text.StartsWith("=")) //6b
{
((Cell)sender).Value = ((Cell)sender).Text;
}
else //6c
{
string formula = ((Cell)sender).Text.Substring(1); // these three lines is pulling value from another cell by reading in the cell number (ie. "A5") (6c.2)
int column = Convert.ToInt16(formula[0]) - 'A';
int row = Convert.ToInt16(formula.Substring(1)) - 1;
((Cell)sender).Value = (GetCell(row, column)).Value;
}
}
CellPropertyChanged?.Invoke(sender, new PropertyChangedEventArgs("Value")); // if PropertyName is Value, update value of cell (6a)
}
public void SPropertyChanged(object sender, PropertyChangedEventArgs e)
{
if (e.PropertyName == "Text")
{
if (!((Cell)sender).setText.StartsWith("="))
{
((Cell)sender).Value = ((Cell)sender).setText;
}
else
{
string equation = ((Cell)sender).setText.Substring(1);
int column = Convert.ToInt16(equation[0]) - 'A';
int row = Convert.ToInt16(equation.Substring(1)) - 1;
((Cell)sender).Value = (GetCell(row, column)).Value;
}
}
CellPropertyChanged?.Invoke(sender, new PropertyChangedEventArgs("Value"));
}
private void OnPropertyChanged(object sender, PropertyChangedEventArgs e)
{
if (e.PropertyName == "Text")
{
if (!((Cell)sender).Text.StartsWith("="))
{
((Cell)sender).Value = ((Cell)sender).Text;
}
else
{
string formula = ((Cell)sender).Text.Substring(1);
int column = Convert.ToInt16(formula[0]) - 'A';
int row = Convert.ToInt16(formula.Substring(1)) - 1;
((Cell)sender).Value = (GetCell(row, column)).Value;
}
}
CellPropertyChanged?.Invoke(sender, new PropertyChangedEventArgs("Value"));
}
private void Spreadsheet_PropertyChanged(object sender, PropertyChangedEventArgs e)
{
//from crandall
if (e.PropertyName == "Text")
{
if (!((Cell)sender).Text.StartsWith("="))
{
((Cell)sender).Value = ((Cell)sender).Text;
}
else if (((Cell)sender).Text.StartsWith("="))
{
string str = ((Cell)sender).Text.Substring(1); //starts at position 1 if there is
int column = Convert.ToInt16(str[0]) - 'A';
Int32.TryParse(((Cell)sender).Text.Substring(1), out int row);
((Cell)sender).Value = (GetCell(column, row)).Value;
}
}
CellPropertyChanged?.Invoke(sender, new PropertyChangedEventArgs("Value"));
}
/// <summary>
///
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void OnPropChanged(object sender, PropertyChangedEventArgs e)
{
Cell c = sender as Cell; // makes the sender into a cell and setting a temp value for it
if (e.PropertyName == "Text")
{
if (c.Text.StartsWith("=")) // checks if the text starts with an '='
{
// formula for copying the cell
string incel = c.Text.Substring(1);
int col = Convert.ToInt16(incel[0]) - 'A';
int row = Convert.ToInt16(incel.Substring(1)) - 1;
c.Value = (GetCell(row, col)).Value;
}
else
{
c.Value = c.Text;
}
}
CellPropertyChanged?.Invoke(sender, new PropertyChangedEventArgs("Value")); // this is to check if there is an inputted value and will check if there is a property changed
}
private void Spreadsheet_PropertyChanged(object sender, PropertyChangedEventArgs e)
{
var cell = (SpreadsheetCell)sender; //casts the sending object as a SpreadsheetCell
if (e.PropertyName == "Text")
{
string text = cell.Text;
if (text == string.Empty) //if there is no text
{
cell.SetValue(string.Empty);
// clears all of this cells references
foreach (SpreadsheetCell cellReference in cell.ReferencedCells.ToList())
{
cellReference.ValueChanged -= cell.OnValueChanged; // unsubsribes from the cell
cell.RemoveReferenceToCell(cellReference); //removes it from the list
}
}
else if (text.Length == 1)
{
cell.SetValue(text);
}
else if (Regex.Match(text, @"=[A-Z]\d+\z").Success) //matches if there is only a single reference with no operators
{
// Removes all references to other cells
SpreadsheetCell referencedCell = GetCell(text.Substring(1)) as SpreadsheetCell;
HashSet <SpreadsheetCell> senderReferencedCells = cell.ReferencedCells;
if (senderReferencedCells.Count > 0)
{
foreach (SpreadsheetCell cellReference in senderReferencedCells.ToList()) // all the cells that were referenced previously but are no longer being referenced.
{
referencedCell.ValueChanged -= cell.OnValueChanged; // unsubsribes from the cell
cell.RemoveReferenceToCell(referencedCell);
}
}
//adds a reference to the cell in its text
cell.SetValue(referencedCell.Value);
cell.AddReferenceToCell(referencedCell);
referencedCell.ValueChanged += cell.OnValueChanged;
}
else if (text[0] == '=')
{
try
{
cell.SetValue(CalculateValue(cell.Text, cell)); //updates cell value if it needs to be
}
catch //Kind of the nuclear option but there are so many exception types to handle one by one.
{
cell.SetValue("#REF!");
}
}
else
{
cell.SetValue(cell.Text);
}
}
else //dont really need this. But going to keep it to keep track of value/text changes in the future.
{
cell.SetValue(cell.Text);
}
CellPropertyChanged?.Invoke(sender, e); //fancy way to only call if CellPropertyChanged isnt null
}
void OnCellPropertyChanged(object sender, CellPropertyChangedEventArgs e)
{
CellPropertyChanged?.Invoke(sender, e);
}
//Notify all subscribers that the property has changed (e.g. form1 --> dataGridview1)
private void NotifyPropertyChanged(object sender, string propertyName)
{
CellPropertyChanged?.Invoke(sender, new PropertyChangedEventArgs(propertyName));
}
//Event used to alert UI-layer code to update the content of a cell
public void NotifyCellPropertyChanged(AbstractCell cell)
{
CellPropertyChanged?.Invoke(cell, new PropertyChangedEventArgs("Cell"));
}
public void NotifyCellPropertyChanged(Cell cell)
{
CellPropertyChanged?.Invoke(this, new PropertyChangedEventArgs(cell.RowIndex.ToString() + "," + cell.ColumnIndex.ToString()));
}
void OnItemPropertyChanged(object sender, PropertyChangedEventArgs e)
{
CellPropertyChanged?.Invoke(sender, new CellPropertyChangedEventArgs(e.PropertyName, this));
}
//Defining Response behaviour to CellPropertyChanged event.
//If the cell Text changes, then the cell is recalculated.
private void OnCellPropertyChanged(object sender, PropertyChangedEventArgs e)
{
SCell target = (SCell)sender;
int[] newcell = { target.RowIndex, target.ColumnIndex };
bool flag = false;
foreach (int[] location in ChangedCells)
{
flag = location.SequenceEqual(newcell);
if (flag == true)
{
break;
}
}
if (flag == false)
{
ChangedCells.Add(newcell);
}
string temp = "";
//if the target text has been set before and starts with '='...
if (e.PropertyName == "Text" && target.Text != null && target.Text != "" && target.Text[0] == '=')
{
//just grab the rest of the string...
for (int i = 1; i < target.Text.Length; i++)
{
temp += target.Text[i].ToString();
}
//... and set the target cell's value to it
string[] parts = target.Eqn.Shunt(temp).Split(' ');
bool equation = true;
//Checking to see if it is a valid equation. looks for non-value, non-variable, and non-operator parts
foreach (string part in parts)
{
if (equation == true && (Regex.Match(part, @"(^[+,\-,/,*]$)").Success || Regex.Match(part, @"(^\d+\.?\d*$)").Success || (Regex.Match(part, @"(^[A-Z{1}][\d+])").Success) && !Regex.Match(part, @"(\W)").Success))
{
equation = true;
}
else
{
equation = false;
}
}
if (equation == true)
{
//prepare target:
//Removing all subscriptions. Subscriptions to referenced cells are (re)added later.
foreach (ExpTree.ExpTree.Var variable in target.Eqn.GetRegi())
{
int row = Int32.Parse(variable.Name[1].ToString()) - 1;
int col = variable.Name[0] - 65;
//unsubscribing to referenced cell's event:
SpreadS[row, col].AlertValChange -= target.OnAlertCellValueChange;
}
//rebuilding target cell's equation
target.Eqn.Rebuild(temp);
//~*~* MaTh *~*~
//target.Eqn.Expression = temp;
target.Value = target.Eqn.Evald().ToString();
//setting variables in target cell to values in respective cells, if there are any
foreach (ExpTree.ExpTree.Var variable in target.Eqn.GetRegi())
{
int row = Int32.Parse(variable.Name.Substring(1)) - 1;
int col = variable.Name[0] - 65;
//subscribing to referenced cell's event for when just the value changes
SpreadS[row, col].AlertValChange += target.OnAlertCellValueChange;
//Checking to see if referenced cell is valid for an equation input
if (SpreadS[row, col].Value == null || !IsEqn(SpreadS[row, col].Eqn.Expression) || !Double.TryParse(SpreadS[row, col].Value, out double num))
{
target.Value = "#REFF!";
}
else
{
target.Eqn.SetVar(variable.Name, Double.Parse(SpreadS[row, col].Value));
target.Value = target.Eqn.Evald().ToString();
}
}
}
else
{
target.Value = target.Text;
}
}
//...otherwise just set the target cell's value to it
else if (e.PropertyName == "Text")
{
if (Double.TryParse(target.Text, out double num))
{
target.Eqn.Expression = num.ToString();
}
target.Value = target.Text;
}
// finally, fire off CellPropertyChanged event
CellPropertyChanged?.Invoke(target, e);
}
private void Spreadsheet_PropertyChanged(object sender, PropertyChangedEventArgs e)
{
//from crandall
rmDep((Cell)sender);
if (e.PropertyName == "Text")
{
changedCells.Add((Cell)sender);
if (!((Cell)sender).Text.StartsWith("="))
{
((Cell)sender).Value = ((Cell)sender).Text;
}
else
{
var expression = ((Cell)sender).Text; //this will get the expression
try
{
var subExp = expression.Substring(1);
ExpTree ssExpression = new ExpTree(subExp);
DefineVars(ssExpression);
((Cell)sender).Value = ssExpression.Eval().ToString();
if (((Cell)sender).Value == "NaN")
{
((Cell)sender).Value = expression;
((Cell)sender).Value = GetCell(expression.Substring(1)).Value;
CellPropertyChanged.Invoke(sender,
new PropertyChangedEventArgs("Value"));
}
addDep((Cell)sender, ssExpression.varNameList);
}
catch
{
//we are concerned with #REF
try
{
var ssExpression = new ExpTree(((Cell)sender).Text.Substring(1).ToUpper());
((Cell)sender).Value = "#REF";
CellPropertyChanged.Invoke(sender,
new PropertyChangedEventArgs("Value"));
addDep((Cell)sender, ssExpression.varNameList);
}
catch
{
//need to check if there is an = operator without any following
((Cell)sender).Value = "#REF";
CellPropertyChanged.Invoke(sender,
new PropertyChangedEventArgs("Value"));
}
((Cell)sender).Value = "#REF";
CellPropertyChanged.Invoke(sender,
new PropertyChangedEventArgs("Value"));
}
}
}
if (cellDependency.ContainsKey((Cell)sender))
{
updateDep((Cell)sender);
}
CellPropertyChanged.Invoke(sender,
new PropertyChangedEventArgs("Value"));
}