HtmlLegendCallback (Charba - J2CL and GWT charts library based on CHART.JS)

Type Parameters:

T - type of legend element which contains the text

All Known Subinterfaces:

HtmlLegendItemCallback, HtmlLegendTitleCallback
```
public interface HtmlLegendCallback<T extends HasLegendText>
```
This callback is the base interface for HTML legend callbacks to change the text of legend for a specific item or legend's title, as HTML.
This callback is used ONLY by HtmlLegend plugin.

Author:

Andrea "Stock" Stocchero

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`SafeHtml`	`generateText(IsChart chart, T item, String currentText)`	Returns a text of legend for a specific item or legend's title, as HTML

- Method Detail
  - generateText
```
SafeHtml generateText(IsChart chart,
                      T item,
                      String currentText)
```
    Returns a text of legend for a specific item or legend's title, as HTML
    
    Parameters:
    
    chart - chart instance
    
    item - item which represents the text to create
    
    currentText - current text provided by legend labels callback.
    
    Returns:
    
    HTML legend representation as SafeHTML