/// <summary>
/// Gets a list of StackLayout objects associated with properties in an object that have been
/// decorated with a UiProperty attribute.
/// </summary>
/// <returns>The property stacks.</returns>
/// <param name="o">Object to get StackLayouts for.</param>
public static List <StackLayout> GetPropertyStacks(object o)
{
List <StackLayout> propertyStacks = new List <StackLayout>();
List <Tuple <PropertyInfo, UiProperty> > propertyUiElements = o.GetType()
.GetProperties(BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic)
.Select(p => new Tuple <PropertyInfo, UiProperty>(p, Attribute.GetCustomAttribute(p, typeof(UiProperty), true) as UiProperty))
.Where(pp => pp.Item2 != null)
.OrderBy(pp => pp.Item2._order).ToList();
foreach (Tuple <PropertyInfo, UiProperty> propertyUiElement in propertyUiElements)
{
UiProperty uiElement = propertyUiElement.Item2;
Label parameterNameLabel = new Label
{
Text = uiElement.LabelText ?? propertyUiElement.Item1.Name + ":",
HorizontalOptions = LayoutOptions.Start,
FontSize = 20
};
bool addParameterValueLabel = false;
View view = null;
BindableProperty bindingProperty = null;
IValueConverter converter = null;
if (uiElement is OnOffUiProperty)
{
view = new Switch();
bindingProperty = Switch.IsToggledProperty;
}
else if (uiElement is DisplayYesNoUiProperty)
{
view = new Label
{
FontSize = 20
};
bindingProperty = Label.TextProperty;
converter = new DisplayYesNoUiProperty.ValueConverter();
uiElement.Editable = true; // just makes the label text non-dimmed. a label's text is never editable.
}
else if (uiElement is EditableListUiProperty)
{
view = new Editor
{
HorizontalOptions = LayoutOptions.FillAndExpand
};
bindingProperty = Editor.TextProperty;
converter = new EditableListUiProperty.ValueConverter();
}
else if (uiElement is DisplayStringUiProperty)
{
view = new Label
{
FontSize = 20
};
bindingProperty = Label.TextProperty;
converter = new DisplayStringUiProperty.ValueConverter();
uiElement.Editable = true; // just makes the label text non-dimmed. a label's text is never editable.
}
else if (uiElement is EntryIntegerUiProperty)
{
view = new Entry
{
Keyboard = Keyboard.Numeric,
HorizontalOptions = LayoutOptions.FillAndExpand
};
bindingProperty = Entry.TextProperty;
converter = new EntryIntegerUiProperty.ValueConverter();
}
else if (uiElement is EntryDoubleUiProperty)
{
view = new Entry
{
Keyboard = Keyboard.Numeric,
HorizontalOptions = LayoutOptions.FillAndExpand
};
bindingProperty = Entry.TextProperty;
converter = new EntryDoubleUiProperty.ValueConverter();
}
else if (uiElement is EntryFloatUiProperty)
{
view = new Entry
{
Keyboard = Keyboard.Numeric,
HorizontalOptions = LayoutOptions.FillAndExpand
};
bindingProperty = Entry.TextProperty;
converter = new EntryFloatUiProperty.ValueConverter();
}
else if (uiElement is EditorUiProperty)
{
view = new Editor
{
Keyboard = Keyboard.Default,
HorizontalOptions = LayoutOptions.FillAndExpand
};
bindingProperty = Editor.TextProperty;
}
else if (uiElement is IncrementalIntegerUiProperty)
{
IncrementalIntegerUiProperty p = uiElement as IncrementalIntegerUiProperty;
view = new Stepper
{
Minimum = p.Minimum,
Maximum = p.Maximum,
Increment = p.Increment
};
bindingProperty = Stepper.ValueProperty;
addParameterValueLabel = true;
}
else if (uiElement is EntryStringUiProperty)
{
view = new Entry
{
Keyboard = Keyboard.Default,
HorizontalOptions = LayoutOptions.FillAndExpand
};
bindingProperty = Entry.TextProperty;
}
else if (uiElement is ListUiProperty)
{
Picker picker = new Picker
{
HorizontalOptions = LayoutOptions.FillAndExpand
};
List <object> items = (uiElement as ListUiProperty).Items.ToList();
foreach (object item in items)
{
picker.Items.Add(item.ToString());
}
picker.SelectedIndex = items.IndexOf(propertyUiElement.Item1.GetValue(o));
picker.SelectedIndexChanged += (oo, ee) =>
{
if (picker.SelectedIndex >= 0)
{
propertyUiElement.Item1.SetValue(o, items[picker.SelectedIndex]);
}
};
view = picker;
}
if (view != null)
{
StackLayout stack = new StackLayout
{
Orientation = StackOrientation.Horizontal,
HorizontalOptions = LayoutOptions.FillAndExpand
};
stack.Children.Add(parameterNameLabel);
if (addParameterValueLabel)
{
Label parameterValueLabel = new Label
{
HorizontalOptions = LayoutOptions.FillAndExpand,
FontSize = 20
};
parameterValueLabel.BindingContext = o;
parameterValueLabel.SetBinding(Label.TextProperty, propertyUiElement.Item1.Name);
stack.Children.Add(parameterValueLabel);
}
view.IsEnabled = uiElement.Editable;
if (bindingProperty != null)
{
view.BindingContext = o;
view.SetBinding(bindingProperty, new Binding(propertyUiElement.Item1.Name, converter: converter));
}
stack.Children.Add(view);
propertyStacks.Add(stack);
}
}
return(propertyStacks);
}
/// <summary>
/// Gets a list of StackLayout objects associated with properties in an object that have been
/// decorated with a UiProperty attribute.
/// </summary>
/// <returns>The property stacks.</returns>
/// <param name="o">Object to get StackLayouts for.</param>
public static List<StackLayout> GetPropertyStacks(object o)
{
List<StackLayout> propertyStacks = new List<StackLayout>();
List<Tuple<PropertyInfo, UiProperty>> propertyUiElements = o.GetType()
.GetProperties(BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic)
.Select(p => new Tuple<PropertyInfo, UiProperty>(p, Attribute.GetCustomAttribute(p, typeof(UiProperty), true) as UiProperty))
.Where(pp => pp.Item2 != null)
.OrderBy(pp => pp.Item2._order).ToList();
foreach (Tuple<PropertyInfo, UiProperty> propertyUiElement in propertyUiElements)
{
UiProperty uiElement = propertyUiElement.Item2;
Label parameterNameLabel = new Label
{
Text = uiElement.LabelText ?? propertyUiElement.Item1.Name + ":",
HorizontalOptions = LayoutOptions.Start,
FontSize = 20
};
bool addParameterValueLabel = false;
View view = null;
BindableProperty bindingProperty = null;
IValueConverter converter = null;
if (uiElement is OnOffUiProperty)
{
view = new Switch();
bindingProperty = Switch.IsToggledProperty;
}
else if (uiElement is DisplayYesNoUiProperty)
{
view = new Label
{
FontSize = 20
};
bindingProperty = Label.TextProperty;
converter = new DisplayYesNoUiProperty.ValueConverter();
uiElement.Editable = true; // just makes the label text non-dimmed. a label's text is never editable.
}
else if (uiElement is EditableListUiProperty)
{
view = new Editor
{
HorizontalOptions = LayoutOptions.FillAndExpand
};
bindingProperty = Editor.TextProperty;
converter = new EditableListUiProperty.ValueConverter();
}
else if (uiElement is DisplayStringUiProperty)
{
view = new Label
{
FontSize = 20
};
bindingProperty = Label.TextProperty;
converter = new DisplayStringUiProperty.ValueConverter();
uiElement.Editable = true; // just makes the label text non-dimmed. a label's text is never editable.
}
else if (uiElement is EntryIntegerUiProperty)
{
view = new Entry
{
Keyboard = Keyboard.Numeric,
HorizontalOptions = LayoutOptions.FillAndExpand
};
bindingProperty = Entry.TextProperty;
converter = new EntryIntegerUiProperty.ValueConverter();
}
else if (uiElement is EntryDoubleUiProperty)
{
view = new Entry
{
Keyboard = Keyboard.Numeric,
HorizontalOptions = LayoutOptions.FillAndExpand
};
bindingProperty = Entry.TextProperty;
converter = new EntryDoubleUiProperty.ValueConverter();
}
else if (uiElement is EntryFloatUiProperty)
{
view = new Entry
{
Keyboard = Keyboard.Numeric,
HorizontalOptions = LayoutOptions.FillAndExpand
};
bindingProperty = Entry.TextProperty;
converter = new EntryFloatUiProperty.ValueConverter();
}
else if (uiElement is EditorUiProperty)
{
view = new Editor
{
Keyboard = Keyboard.Default,
HorizontalOptions = LayoutOptions.FillAndExpand
};
bindingProperty = Editor.TextProperty;
}
else if (uiElement is IncrementalIntegerUiProperty)
{
IncrementalIntegerUiProperty p = uiElement as IncrementalIntegerUiProperty;
view = new Stepper
{
Minimum = p.Minimum,
Maximum = p.Maximum,
Increment = p.Increment
};
bindingProperty = Stepper.ValueProperty;
addParameterValueLabel = true;
}
else if (uiElement is EntryStringUiProperty)
{
view = new Entry
{
Keyboard = Keyboard.Default,
HorizontalOptions = LayoutOptions.FillAndExpand
};
bindingProperty = Entry.TextProperty;
}
else if (uiElement is ListUiProperty)
{
Picker picker = new Picker
{
HorizontalOptions = LayoutOptions.FillAndExpand
};
List<object> items = (uiElement as ListUiProperty).Items.ToList();
foreach (object item in items)
picker.Items.Add(item.ToString());
picker.SelectedIndex = items.IndexOf(propertyUiElement.Item1.GetValue(o));
picker.SelectedIndexChanged += (oo, ee) =>
{
if (picker.SelectedIndex >= 0)
propertyUiElement.Item1.SetValue(o, items[picker.SelectedIndex]);
};
view = picker;
}
if (view != null)
{
StackLayout stack = new StackLayout
{
Orientation = StackOrientation.Horizontal,
HorizontalOptions = LayoutOptions.FillAndExpand
};
stack.Children.Add(parameterNameLabel);
if (addParameterValueLabel)
{
Label parameterValueLabel = new Label
{
HorizontalOptions = LayoutOptions.FillAndExpand,
FontSize = 20
};
parameterValueLabel.BindingContext = o;
parameterValueLabel.SetBinding(Label.TextProperty, propertyUiElement.Item1.Name);
stack.Children.Add(parameterValueLabel);
}
view.IsEnabled = uiElement.Editable;
if (bindingProperty != null)
{
view.BindingContext = o;
view.SetBinding(bindingProperty, new Binding(propertyUiElement.Item1.Name, converter: converter));
}
stack.Children.Add(view);
propertyStacks.Add(stack);
}
}
return propertyStacks;
}