protected override void OnModelLoaded()
{
base.OnModelLoaded();
if (Model.Items.Any())
{
Model.CurrentItem = Model.Items.First();
}
else
{
Model.CreateDefaultCurrentItem();
}
SelectedOperatorType = CalculatorOperatorType.None;
RefreshUI();
}
private void RefreshUI()
{
_suppressEvents = true;
if (Model.CurrentItem == null)
{
Model.CreateDefaultCurrentItem();
SetToDefault();
}
else if (!Model.Items.Contains(Model.CurrentItem))
{
SetToDefault();
}
else
{
var currentItem = Model.CurrentItem;
bool isOperatorType = currentItem.ValueType == CalculatorValueType.Operator;
bool isNoneOperatorType = currentItem.OperatorType == CalculatorOperatorType.None;
IsLastElement = isOperatorType && isNoneOperatorType;
SelectedOperatorType = currentItem.OperatorType;
SelectedValueType = ValueTypes.FirstOrDefault(x => x.Value == currentItem.ValueType);
SelectedCashFlow = CashFlows.FirstOrDefault(x => x.Id == currentItem.ForeignId);
SelectedCashFlowGroup = CashFlowGroups.FirstOrDefault(x => x.Id == currentItem.ForeignId);
SelectedIncome = Incomes.FirstOrDefault(x => x.Id == currentItem.ForeignId);
SelectedSaving = Savings.FirstOrDefault(x => x.Id == currentItem.ForeignId);
UserValue = currentItem.Value;
UserText = currentItem.Text;
SelectedEquation = Equations.FirstOrDefault(x => x.Id == currentItem.ForeignId);
}
NotifyOfPropertyChange(() => IsNoneOperatorSelected);
NotifyOfPropertyChange(() => IsOperatorElementVisible);
NotifyOfPropertyChange(() => IsAddOperatorSelected);
NotifyOfPropertyChange(() => IsSubstractOperatorSelected);
NotifyOfPropertyChange(() => IsMultiplyOperatorSelected);
NotifyOfPropertyChange(() => IsDivideOperatorSelected);
Title = string.Format("Składowe równania ({0}/{1})", Model.CurrentPageNumber, Model.TotalPagesNumber);
_suppressEvents = false;
}
private void SetToDefault()
{
SelectedValueType = ValueTypes.FirstOrDefault();
SelectedCashFlow = CashFlows.FirstOrDefault();
SelectedCashFlowGroup = CashFlowGroups.FirstOrDefault();
SelectedIncome = null;
SelectedSaving = null;
UserValue = null;
UserText = string.Empty;
SelectedEquation = null;
SelectedOperatorType = CalculatorOperatorType.None;
var lastItem = Model.Items.LastOrDefault();
bool isLastItemNotOperator = (lastItem != null) && (lastItem.ValueType != CalculatorValueType.Operator);
IsLastElement = (Model.Items.Count > 2) && (isLastItemNotOperator);
if (IsOperatorElementVisible)
{
IsAddOperatorSelected = true;
}
}
public static string ToMath(this CalculatorOperatorType operatorType)
{
switch (operatorType)
{
case CalculatorOperatorType.None:
return(string.Empty);
case CalculatorOperatorType.Add:
return("+");
case CalculatorOperatorType.Substract:
return("-");
case CalculatorOperatorType.Multiply:
return("*");
case CalculatorOperatorType.Divide:
return("/");
default:
throw new ArgumentOutOfRangeException(string.Format("Undefined name for: {0}", operatorType.ToString()));
}
}
public static string ToName(this CalculatorOperatorType operatorType)
{
switch (operatorType)
{
case CalculatorOperatorType.None:
return(string.Empty);
case CalculatorOperatorType.Add:
return("Dodaj");
case CalculatorOperatorType.Substract:
return("Odejmij");
case CalculatorOperatorType.Multiply:
return("Pomnóż");
case CalculatorOperatorType.Divide:
return("Podziel");
default:
throw new ArgumentOutOfRangeException(string.Format("Undefined name for: {0}", operatorType.ToString()));
}
}
public BudgetCalculatorItem AddItem(CalculatorValueType valueType, CalculatorOperatorType operatorType, decimal?value, int foreignId)
{
CurrentItem = _equation.AddItem(string.Empty, valueType, operatorType, value, foreignId);
return(CurrentItem);
}
public BudgetCalculatorItem AddItem(CalculatorValueType valueType, CalculatorOperatorType operatorType, decimal? value, int foreignId)
{
CurrentItem = _equation.AddItem(string.Empty, valueType, operatorType, value, foreignId);
return CurrentItem;
}
public BudgetCalculatorItem AddItem(string name, CalculatorValueType valueType, CalculatorOperatorType operatorType = CalculatorOperatorType.None, decimal?value = null, int foreignId = 0)
{
var item = new BudgetCalculatorItem
{
Name = name,
ValueType = valueType,
OperatorType = operatorType,
ForeignId = foreignId,
Value = value,
Equation = this,
};
Items.Add(item);
return(item);
}
public BudgetCalculatorItem AddItem(string name, CalculatorValueType valueType, CalculatorOperatorType operatorType = CalculatorOperatorType.None, decimal? value = null, int foreignId = 0)
{
var item = new BudgetCalculatorItem
{
Name = name,
ValueType = valueType,
OperatorType = operatorType,
ForeignId = foreignId,
Value = value,
Equation = this,
};
Items.Add(item);
return item;
}
