RadCalculatorElement
Represents a calculator element that provides standard calculator functionality including arithmetic operations, memory functions, and display capabilities.
Definition
Namespace:Telerik.WinControls.UI
Assembly:Telerik.WinControls.UI.dll
Syntax:
public class RadCalculatorElement : LightVisualElement, INotifyPropertyChanged, ICustomTypeDescriptor, ISupportSystemSkin, IBindableComponent, IComponent, IDisposable, ISupportDrag, ISupportDrop, IShortcutProvider, IStylableElement, IStylableNode, IPrimitiveElement, IShapedElement, IFillElement, IBorderElement, IBoxStyle, IBoxElement, IDrawFillElement, IImageElement, ITextPrimitive, ITextProvider, ICalculatorElement, ICalculatorButtonElementContainerInheritance: objectDisposableObjectRadObjectRadElementVisualElementRadComponentElementRadItemUIItemBaseLightVisualElementRadCalculatorElement...
Implements:
Inherited Members
Constructors
Initializes a new instance of the RadCalculatorElement class.
public RadCalculatorElement()Properties
Gets or sets the calculation behavior.
public StandardCalculatorCalculationBehavior CalculationBehavior { get; set; }Gets the RadCalculatorContentElement, which is responsible for calculator buttons and their layout.
public RadCalculatorContentElement ContentElement { get; }Gets or sets current culture for the RadCalculatorElement.
public CultureInfo Culture { get; set; }Implements:
Gets the RadCalculatorTextAreaElement, which is responsible for the displayed value, memory and history.
public RadCalculatorTextAreaElement TextAreaElement { get; }Methods
Arranges the RadElement to its final location. The element must call the Arrange method of each of its children.
protected override SizeF ArrangeOverride(SizeF finalSize)The size that is available for element.
Returns:The rectangle occupied by the element. Usually finalSize. Should you return different size, the Layout system will restart measuring and rearranging the items. That could lead to infinite recursion.
Overrides:
In this method call to the Arrange method of each child must be made.
Creates the calculation behavior responsible for the mathematic operations and history.
protected virtual StandardCalculatorCalculationBehavior CreateCalculationBehavior()StandardCalculatorCalculationBehavior
A new instance of StandardCalculatorCalculationBehavior.
Called by the element when constructed. Allows inheritors to build the element tree.
protected override void CreateChildElements()Overrides:
Creates the RadCalculatorContentElement, which is responsible for calculator buttons and their layout.
protected virtual RadCalculatorContentElement CreateContentElement()A new instance of RadCalculatorContentElement.
Creates the RadCalculatorTextAreaElement, which is responsible for the displayed value, memory and history.
protected virtual RadCalculatorTextAreaElement CreateTextPartElement()A new instance of RadCalculatorTextAreaElement.
Gets the formatted display value for the calculator.
protected virtual string GetFormattedValue()A formatted string representation of the current value or "0" if no value is present.
Initializes member fields to their default values. This method is called prior the CreateChildItems one and allows for initialization of members on which child elements depend.
protected override void InitializeFields()Overrides:
Measures the space required by the RadElement
Used by the layout system.
protected override SizeF MeasureOverride(SizeF availableSize)The size that is available to the RadElement. The available size can be infinity (to take the full size of the element)
Returns:The minimum size required by the element to be completely visible. Cannot be infinity.
Overrides:
In this method call to the Measure method of each child must be made.
Executed when a calculator button mouse up event is fired.
public void OnButtonMouseUp(RadCalculatorButton button, MouseEventArgs e)The RadCalculatorButton that was clicked.
eMouseEventArgsThe MouseEventArgs containing event data.
Implements:
Executed when a key down event is fired in the calculator.
public void OnCalculatorKeyDown(KeyEventArgs e)The KeyEventArgs containing event data.
Implements:
Executed when a key press event is fired in the calculator.
public void OnCalculatorKeyPress(KeyPressEventArgs e)The KeyPressEventArgs containing event data.
Implements:
Executed when the display value needs to be updated.
public void OnDisplayValueChanged()Implements:
Executed when the calculator history text needs to be updated.
public void OnHistoryUpdated(string lastAction)The text representing the last performed action.
Implements:
Executed when the calculator memory is updated.
public void OnMemoryUpdated(bool hasMemory)A value indicating whether the calculator has a value stored in memory.
Implements:
Fires the ValueChanged event.
protected virtual void OnValueChanged()Fires the ValueChanging event.
protected virtual void OnValueChanging(ValueChangingEventArgs args)The ValueChangingEventArgs containing event data.
Gets a value indicating, whether a child will be arranged during the ArrangeOverride.
protected override bool ShouldArrangeChild(RadElement child)The child.
Returns:Whether the child will be arranged in ArrangeOverride.
Overrides:
Gets a value indicating, whether a child will be measured during the MeasureOverride.
protected override bool ShouldMeasureChild(RadElement child)The child.
Returns:Whether the child will be measured in MeasureOverride.
Overrides:
Updates the displayed text/value.
protected virtual void UpdateText()Events
Fired when the displayed value has changed.
public event EventHandler ValueChangedFired when the display value is about to be changed.
public event ValueChangingEventHandler ValueChanging