public void Do ()
{
Region.SetNeedToEvaluate (true);
var parent = Region.Selection.SelectedToken.Parent;
Token _base;
Token power;
if (Region.Selection.SelectedToken is TextToken) {
var textToken = Region.Selection.SelectedToken as TextToken;
_base = new TextToken ()
{
Text = GetLeftString (textToken.Text)
};
power = new TextToken ()
{
Text = GetRightString (textToken.Text)
};
} else {
if (Region.Selection.SelectedToken is FractionToken) {
var fraction = Region.Selection.SelectedToken;
var parentheses = new ParenthesesToken ();
parentheses.ShowCloseParentheses = true;
parent.Replace (fraction, parentheses);
var container = new HBoxToken ();
parentheses.Child = container;
container.Add (fraction);
_base = parentheses;
Region.Selection.SelectedToken = parentheses;
} else
_base = Region.Selection.SelectedToken;
power = new TextToken ();
}
var exponentiation = new ExponentiationToken ();
parent.Replace (Region.Selection.SelectedToken, exponentiation);
exponentiation.Base = _base;
exponentiation.Power = power;
Region.Selection.SelectedToken = power;
}
public void Do ()
{
Region.SetNeedToEvaluate (true);
if (Region.Selection.SelectedToken is TextToken == false) {
if (Region.Selection.Type == SelectionType.Right) {
var operation = new MultiplicationToken ();
new InsertHBinaryOperation (Region, operation).Do ();
}
} else {
var textToken = Region.Selection.SelectedToken as TextToken;
if (!string.IsNullOrEmpty (textToken.Text) && Region.Selection.Position != 0) {
if (Regex.IsMatch (textToken.Text, @"^\D") && Region.Selection.Position == textToken.Text.Length) {
var p = GetHBoxToken (textToken);
var i = p.Tokens.IndexOf (textToken);
p.Tokens.Insert (i + 1, new TextToken ());
new RightAction (Region).Do ();
} else {
var operation = new MultiplicationToken ();
new InsertHBinaryOperation (Region, operation).Do ();
}
}
}
var parent = GetHBoxToken (Region.Selection.SelectedToken);
var index = parent.Tokens.IndexOf (Region.Selection.SelectedToken);
var newContainer = new HBoxToken ();
foreach (var token in parent.Tokens.Skip (index).ToList()) {
parent.Tokens.Remove (token);
newContainer.Add (token);
}
var parenthess = new ParenthesesToken ();
parenthess.Child = newContainer;
parent.Tokens.Add (parenthess);
}
private HBoxToken GetHBoxToken (Token token)
{
if (token.Parent is HBoxToken == false) {
var parent = token.Parent;
var container = new HBoxToken ();
parent.Replace (token, container);
container.Add (token);
}
return token.Parent as HBoxToken;
}
public MathRegionViewModel (DocumentViewModel document)
{
Document = document;
x = BuildProperty<double> ("X");
y = BuildProperty<double> ("Y");
root = BuildProperty<HBoxToken> ("Root");
selection = BuildProperty<Selection> ("Selection");
insertCharacterCommand = BuildProperty<ICommand> ("InsertCharacterCommand");
insertCharacterCommand.Value = new DelegateCommand<Key> (o => new InsertCharacterAction (o, this).Do ());
plusCommand = BuildProperty<ICommand> ("PlusCommand");
plusCommand.Value = new DelegateCommand<object> (o => new PlusAction (this).Do ());
minusCommand = BuildProperty<ICommand> ("MinusCommand");
minusCommand.Value = new DelegateCommand<object> (o => new MinusAction (this).Do ());
multiplicationCommand = BuildProperty<ICommand> ("MultiplicationCommand");
multiplicationCommand.Value = new DelegateCommand<object> (o => new MultiplicationAction (this).Do ());
divideCommand = BuildProperty<ICommand> ("DivideCommand");
divideCommand.Value = new DelegateCommand<object> (o => new DivideAction (this).Do ());
assignmentCommand = BuildProperty<ICommand> ("AssignmentCommand");
assignmentCommand.Value = new DelegateCommand<object> (o => new AssignmentAction (this).Do ());
resultCommand = BuildProperty<ICommand> ("ResultCommand");
resultCommand.Value = new DelegateCommand<object> (o => new ResultAction (this).Do ());
leftCommand = BuildProperty<ICommand> ("LeftCommand");
leftCommand.Value = new DelegateCommand<object> (o => new LeftAction (this).Do ());
rightCommand = BuildProperty<ICommand> ("RightCommand");
rightCommand.Value = new DelegateCommand<object> (o => new RightAction (this).Do ());
evaluateCommand = BuildProperty<ICommand> ("EvaluateCommand");
evaluateCommand.Value = new DelegateCommand<object> (o => new EvaluateAction (this).Do ());
openBracketCommand = BuildProperty<ICommand> ("OpenBracketCommand");
openBracketCommand.Value = new DelegateCommand<object> (o => new OpenBracketAction (this).Do ());
closeBracketCommand = BuildProperty<ICommand> ("CloseBracketCommand");
closeBracketCommand.Value = new DelegateCommand<object> (o => new CloseBracketAction (this).Do ());
commaCommand = BuildProperty<ICommand> ("CommaCommand");
commaCommand.Value = new DelegateCommand<object> (o => new CommaAction (this).Do ());
exponentiationCommand = BuildProperty<ICommand> ("ExponentiationCommand");
exponentiationCommand.Value = new DelegateCommand<object> (o => new ExponentiationAction (this).Do ());
squareRootCommand = BuildProperty<ICommand> ("SquareRootCommand");
squareRootCommand.Value = new DelegateCommand<object> (o => new SquareRootAction (this).Do ());
absoluteCommand = BuildProperty<ICommand> ("AbsoluteCommand");
absoluteCommand.Value = new DelegateCommand<object> (o => new AbsoluteAction (this).Do ());
needToEvaluate = BuildProperty<bool> ("NeedToEvaluate");
needToEvaluate.DependencyPropertyValueChanged += HandleNeedToEvaluateChanged;
Root = new HBoxToken ();
Selection = new Selection ();
var token = new TextToken ();
Root.Add (token);
Selection.SelectedToken = token;
hasError = BuildProperty<bool> ("HasError");
}