Class

RadTaskBoardColumnHeaderElement

Declaration

public RadTaskBoardColumnHeaderElement()

Declaration

public static RadProperty IsCollapsedProperty

Field Value

Declaration

public static RadProperty IsHighlightedProperty

Field Value

Gets the button element that allows users to collapse or expand the column to optimize screen space usage.

Declaration

public virtual RadCollapseButtonElement CollapseButton { get; }

Property Value

Gets or sets a value indicating whether the column header is in collapsed state, affecting layout and visual presentation.

Declaration

protected virtual bool IsCollapsed { get; set; }

Property Value

Gets or sets a value indicating whether the header is visually highlighted. Setting this value unbinds the property from the DefaultIsHeaderHighlighted property. Use ResetIsHighlighted() to restore binding.

Declaration

public bool IsHighlighted { get; set; }

Property Value

Gets the visual element that displays the secondary subtitle text below the main title.

Declaration

public virtual LightVisualElement SubTitleElement { get; }

Property Value

Gets or sets the secondary subtitle text displayed below the main title for additional context information.

Declaration

protected virtual string Subtitle { get; set; }

Property Value

Gets or sets the main title text displayed prominently in the column header.

Declaration

protected virtual string Title { get; set; }

Property Value

Gets the visual element that displays the main title text of the column header.

Declaration

public virtual LightVisualElement TitleElement { get; }

Property Value

Arranges the header's child elements within the final allocated space, positioning title, subtitle, and collapse button according to the current collapsed state.

Declaration

protected override SizeF ArrangeOverride(SizeF finalSize)

Parameters

Returns

Overrides LightVisualElement.ArrangeOverride(SizeF)

Creates and configures the child elements including title, subtitle, and collapse button with their styling and event handlers.

Declaration

protected override void CreateChildElements()

Overrides RadElement.CreateChildElements()

Creates and returns a new collapse button element. Override this method to provide custom collapse button functionality.

Declaration

protected virtual RadCollapseButtonElement CreateCollapseButton()

Returns

Initializes the header element's properties including mouse input handling and drag-drop support.

Declaration

protected override void InitializeFields()

Overrides LightVisualElement.InitializeFields()

Measures the desired size of the header element, handling both collapsed and expanded layout states with proper element sizing.

Declaration

protected override SizeF MeasureOverride(SizeF availableSize)

Parameters

Returns

Overrides LightVisualElement.MeasureOverride(SizeF)

Handles mouse down events, enabling capture mode and initiating horizontal scroll service tracking.

Declaration

protected override void OnMouseDown(MouseEventArgs e)

Parameters

Overrides RadItem.OnMouseDown(MouseEventArgs)

Handles mouse move events, updating the scroll service with current mouse position for horizontal scrolling support.

Declaration

protected override void OnMouseMove(MouseEventArgs e)

Parameters

Overrides LightVisualElement.OnMouseMove(MouseEventArgs)

Handles mouse up events, completing scroll service tracking and releasing capture mode.

Declaration

protected override void OnMouseUp(MouseEventArgs e)

Parameters

Overrides RadItem.OnMouseUp(MouseEventArgs)

Resets the IsHighlighted property to its default value and restores binding to the task board's default setting.

Declaration

public void ResetIsHighlighted()