public MainWindow() { this.InitializeComponent(); SButton clear = new SButton { Content = "Clear", Width = 75 }; Stream<string> sClearIt = clear.SClicked.Map(_ => string.Empty); STextBox text = new STextBox(sClearIt, "Hello") { Width = 100 }; this.Container.Children.Add(text); this.Container.Children.Add(clear); }
public MainWindow() { this.InitializeComponent(); SDateField dep = new SDateField(); SDateField ret = new SDateField(); Cell<bool> valid = dep.SelectedDate.Lift(ret.SelectedDate, (d, r) => d <= r); SButton ok = new SButton(valid) { Content = "OK", Width = 75 }; this.DeparturePlaceholder.Children.Add(dep); this.ReturnPlaceholder.Children.Add(ret); this.ButtonPlaceholder.Children.Add(ok); }
public MainWindow() { this.InitializeComponent(); SDateField dep = new SDateField(); SDateField ret = new SDateField(); Rule r1 = new Rule((d, r) => d <= r); Rule r2 = new Rule((d, r) => !Unlucky(d) && !Unlucky(r)); Rule rule = r1.And(r2); Cell<bool> valid = rule.Reify(dep.SelectedDate, ret.SelectedDate); SButton ok = new SButton(valid) { Content = "OK", Width = 75 }; this.DeparturePlaceholder.Children.Add(dep); this.ReturnPlaceholder.Children.Add(ret); this.ButtonPlaceholder.Children.Add(ok); }
public MainWindow() { this.InitializeComponent(); SButton red = new SButton { Content = "red", Width = 75 }; SButton green = new SButton { Content = "green", Width = 75, Margin = new Thickness(5, 0, 0, 0) }; Stream<string> sRed = red.SClicked.Map(_ => "red"); Stream<string> sGreen = green.SClicked.Map(_ => "green"); Stream<string> sColor = sRed.OrElse(sGreen); Cell<string> color = sColor.Hold(string.Empty); SLabel lbl = new SLabel(color) { Width = 75, Margin = new Thickness(5, 0, 0, 0) }; this.Container.Children.Add(red); this.Container.Children.Add(green); this.Container.Children.Add(lbl); }
public MainWindow() { this.InitializeComponent(); IReadOnlyList<Tuple<Grid, Grid>> emailAndValidationPlaceholders = new[] { Tuple.Create(this.Email1Placeholder, this.Email1ValidationPlaceholder), Tuple.Create(this.Email2Placeholder, this.Email2ValidationPlaceholder), Tuple.Create(this.Email3Placeholder, this.Email3ValidationPlaceholder), Tuple.Create(this.Email4Placeholder, this.Email4ValidationPlaceholder) }; int maxEmails = emailAndValidationPlaceholders.Count; STextBox name = new STextBox(string.Empty) { Width = 200 }; this.NamePlaceholder.Children.Add(name); Cell<string> nameValidationError = name.Text.Map(t => string.IsNullOrEmpty(t.Trim()) ? "<-- enter something" : t.Trim().IndexOf(' ') < 0 ? "<-- must contain space" : string.Empty); Cell<bool> isNameValid = nameValidationError.Map(string.IsNullOrEmpty); SLabel validName = new SLabel(nameValidationError); this.NameValidationPlaceholder.Children.Add(validName); SSpinner number = SSpinner.Create(1); this.NumberOfEmailAddressesPlaceholder.Children.Add(number); Cell<string> numberOfEmailAddressesValidationError = number.Value.Map(n => n < 1 || n > maxEmails ? "<-- must be 1 to " + maxEmails : string.Empty); Cell<bool> isNumberOfEmailAddressesValid = numberOfEmailAddressesValidationError.Map(string.IsNullOrEmpty); SLabel validNumber = new SLabel(numberOfEmailAddressesValidationError); this.NumberOfEmailAddressesValidationPlaceholder.Children.Add(validNumber); IReadOnlyList<Cell<bool>> validEmails = emailAndValidationPlaceholders.Select((p, i) => { Cell<bool> enabled = number.Value.Map(n => i < n); STextBox email = new STextBox(string.Empty, enabled) { Width = 200 }; p.Item1.Children.Add(email); Cell<string> validText = email.Text.Lift(number.Value, (e, n) => i >= n ? string.Empty : string.IsNullOrEmpty(e.Trim()) ? "<-- enter something" : e.IndexOf('@') < 0 ? "<-- must contain @" : string.Empty); SLabel validEmail = new SLabel(validText); p.Item2.Children.Add(validEmail); return validText.Map(string.IsNullOrEmpty); }).ToArray(); Cell<bool> allValid = validEmails.Concat(new[] { isNameValid, isNumberOfEmailAddressesValid }).Lift(vv => vv.All(v => v)); SButton ok = new SButton(allValid) { Content = "OK", Width = 75 }; this.ButtonPlaceholder.Children.Add(ok); }
private SSpinner(int initialValue) { StreamLoop<int> sSetValue = new StreamLoop<int>(); STextBox textField = new STextBox(sSetValue.Map(v => v.ToString()), initialValue.ToString()) { VerticalContentAlignment = VerticalAlignment.Center }; this.Value = textField.Text.Map(t => { int result; if (int.TryParse(t, out result)) { return result; } return 0; }); SButton plus = new SButton { Content = "+", Width = 25 }; SButton minus = new SButton { Content = "-", Width = 25 }; this.RowDefinitions.Add(new RowDefinition { Height = GridLength.Auto }); this.RowDefinitions.Add(new RowDefinition { Height = GridLength.Auto }); this.ColumnDefinitions.Add(new ColumnDefinition { Width = new GridLength(1, GridUnitType.Star) }); this.ColumnDefinitions.Add(new ColumnDefinition { Width = GridLength.Auto }); SetRow(textField, 0); SetColumn(textField, 0); SetRowSpan(textField, 2); this.Children.Add(textField); SetRow(plus, 0); SetColumn(plus, 1); this.Children.Add(plus); SetRow(minus, 1); SetColumn(minus, 1); this.Children.Add(minus); Stream<int> sPlusDelta = plus.SClicked.Map(_ => 1); Stream<int> sMinusDelta = minus.SClicked.Map(_ => -1); Stream<int> sDelta = sPlusDelta.OrElse(sMinusDelta); sSetValue.Loop(sDelta.Snapshot(this.Value, (d, v) => v + d)); }
public MainWindow() { this.InitializeComponent(); Transaction.RunVoid(() => { CellLoop<int> value = new CellLoop<int>(); SLabel lblValue = new SLabel(value.Map(i => i.ToString())); SButton plus = new SButton { Content = "+", Width = 25, Margin = new Thickness(5, 0, 0, 0) }; SButton minus = new SButton { Content = "-", Width = 25, Margin = new Thickness(5, 0, 0, 0) }; this.Container.Children.Add(lblValue); this.Container.Children.Add(plus); this.Container.Children.Add(minus); Stream<int> sPlusDelta = plus.SClicked.Map(_ => 1); Stream<int> sMinusDelta = minus.SClicked.Map(_ => -1); Stream<int> sDelta = sPlusDelta.OrElse(sMinusDelta); Stream<int> sUpdate = sDelta.Snapshot(value, (d, v) => v + d).Filter(n => n >= 0); value.Loop(sUpdate.Hold(0)); }); }