com.smartgwt.client.widgets.grid

## Interface HeaderHoverFormatter

-     public interface HeaderHoverFormatter

  Formatter object for providing a custom implementation of `ListGrid.headerHoverHTML(int,java.lang.String)`.

- - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `java.lang.String` | `getHoverHTML(int fieldNum, java.lang.String defaultHTML)` Returns the HTML that is displayed by default if a registered `HeaderHoverHandler` does not cancel a `HeaderHoverEvent`.

- - ### Method Detail

    - #### getHoverHTML

          java.lang.String getHoverHTML(int fieldNum,
                                      java.lang.String defaultHTML)

      Returns the HTML that is displayed by default if a registered `HeaderHoverHandler` does not cancel a `HeaderHoverEvent`. Return null or an empty string to cancel the hover.
      Parameters:
        `fieldNum` - field number for the header that was hovered
        `defaultHTML` - the HTML that would have been displayed by default.
      Returns:
        HTML to be displayed in the hover. If null or an empty string, then the hover is canceled.