ASP.NET Core MVC Controls | ComponentOne
In This Topic
    ChartTooltip Class
    In This Topic
    File
    wijmo.chart.js
    Module
    wijmo.chart
    Base Class
    Tooltip

    Extends the Tooltip class to provide chart tooltips.

    Constructor

    Properties

    Methods

    Events

    Constructor

    constructor

    constructor(): void
    

    Initializes a new instance of the ChartTooltip class.

    Returns
    void

    Properties

    content

    Gets or sets the tooltip content.

    The tooltip content can be specified as a string or as a function that takes a HitTestInfo object as a parameter.

    When the tooltip content is a string, it may contain any of the following parameters:

    • propertyName: Any property of the data object represented by the point.
    • seriesName: Name of the series that contains the data point (FlexChart only).
    • pointIndex: Index of the data point.
    • value: Value of the data point (y-value for FlexChart, item value for FlexPie).
    • x: x-value of the data point (FlexChart only).
    • y: y-value of the data point (FlexChart only).
    • name: Name of the data point (x-value for FlexChart or legend entry for FlexPie).

    Parameters must be enclosed in single curly brackets. For example:

    // 'country' and 'sales' are properties of the data object.
      chart.tooltip.content = '{country}, sales:{sales}';
    

    The next example shows how to set the tooltip content using a function.

    // Set the tooltip content
      chart.tooltip.content = function (ht) {
        return ht.name + ":" + ht.value.toFixed();
      }
    
    Type
    any

    cssClass

    Gets or sets a CSS class name to add to the tooltip.

    The default value for this property is an empty string.

    Inherited From
    Tooltip
    Type
    string

    gap

    Gets or sets the distance between the tooltip and the target element.

    The default value for the property is **6** pixels.

    Inherited From
    Tooltip
    Type
    number

    hideDelay

    Gets or sets the delay, in milliseconds, before hiding the tooltip if the mouse remains over the element.

    The default value for the property is **zero** milliseconds, which causes the tip to remain visible until the mouse moves away from the element.

    Inherited From
    Tooltip
    Type
    number

    isAnimated

    Gets or sets a value that determines whether tooltips should use a fade-in animation when shown.

    The default value for this property is **false**.

    Inherited From
    Tooltip
    Type
    boolean

    isContentHtml

    Gets or sets a value that determines whether the tooltip contents should be displayed as plain text or as HTML.

    The default value for the property is **true**.

    Inherited From
    Tooltip
    Type
    boolean

    isVisible

    Gets a value that determines whether the tooltip is currently visible.

    Inherited From
    Tooltip
    Type
    boolean

    position

    Gets or sets the PopupPosition where the tooltip should be displayed with respect to the owner element.

    The default value for this property is **PopupPosition.Above**.

    Inherited From
    Tooltip
    Type
    PopupPosition

    showAtMouse

    Gets or sets a value that determines whether the tooltip should be calculated based on the mouse position rather than the target element.

    The default value for the property is **false**, which means the tooltip position is calculated based on the target element.

    The position property is used to determine the tooltip position in respect to the target element or to the mouse position.

    Inherited From
    Tooltip
    Type
    boolean

    showDelay

    Gets or sets the delay, in milliseconds, before showing the tooltip after the mouse enters the target element.

    The default value for the property is **500** milliseconds.

    Inherited From
    Tooltip
    Type
    number

    threshold

    Gets or sets the maximum distance from the element to display the tooltip.

    Type
    number

    trigger

    Gets or sets the TooltipTrigger that determines how the tooltip should be triggered.

    The default value for this property is **TooltipTrigger.Focus**.

    Inherited From
    Tooltip
    Type
    TooltipTrigger

    Methods

    dispose

    dispose(): void
    

    Removes all tooltips associated with this Tooltip instance.

    Inherited From
    Tooltip
    Returns
    void

    getTooltip

    getTooltip(element: any): string
    

    Gets the tooltip content associated with a given element.

    Parameters
    • element: any

      Element, element ID, or control that the tooltip explains.

    Inherited From
    Tooltip
    Returns
    string

    hide

    hide(): void
    

    Hides the tooltip if it is currently visible.

    Inherited From
    Tooltip
    Returns
    void

    onPopup

    onPopup(e: TooltipEventArgs): boolean
    

    Raises the popup event.

    Parameters
    Inherited From
    Tooltip
    Returns
    boolean

    setTooltip

    setTooltip(element: any, content: string | null, position?: PopupPosition): void
    

    Assigns tooltip content to a given element on the page.

    The same tooltip may be used to display information for any number of elements on the page. To remove the tooltip from an element, call setTooltip and specify null for the content.

    To remove the tooltips for all elements, call the dispose method.

    Parameters
    • element: any

      Element, single element CSS selector, or control that the tooltip explains.

    • content: string | null

      Tooltip content or ID of the element that contains the tooltip content.

    • position: PopupPosition
    Optional

    Position where the tooltip should be displayed with respect to the owner element.

    Inherited From
    Tooltip
    Returns
    void

    show

    show(element: any, content: string, bounds?: Rect): void
    

    Shows the tooltip with the specified content, next to the specified element.

    Parameters
    • element: any

      Element, element ID, or control that the tooltip explains.

    • content: string

      Tooltip content or ID of the element that contains the tooltip content.

    • bounds: Rect
    Optional

    Optional element that defines the bounds of the area that the tooltip targets. If not provided, the bounds of the element are used (as reported by the getBoundingClientRect method).

    Returns
    void

    Events