com.google.gwt.safehtml.shared

## Class SimpleHtmlSanitizer

- java.lang.Object
- - com.google.gwt.safehtml.shared.SimpleHtmlSanitizer

- All Implemented Interfaces:
    HtmlSanitizer

      public final class SimpleHtmlSanitizer
      extends java.lang.Object
      implements HtmlSanitizer

  A simple and relatively inexpensive HTML sanitizer.

  This sanitizer accepts the subset of HTML consisting of the following attribute-free tags:

  - `<b>`, `<em>`, `<i>`
  - `<h1>`, `<h2>`, `<h3>`, `<h4>`, `<h5>`, `<h6>`
  - `<ul>`, `<ol>`, `<li>`
  - `<br>`, `<hr>`, `<strong>`
  as well as numeric HTML entities and HTML entity references. Any HTML metacharacters that do not appear as part of markup in this subset will be HTML-escaped.

- - ### Method Summary

    All Methods Static Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `static SimpleHtmlSanitizer` | `getInstance()` Return a singleton SimpleHtmlSanitizer instance.
    `SafeHtml` | `sanitize(java.lang.String html)` Sanitizes a string into `SafeHtml`.
    `static SafeHtml` | `sanitizeHtml(java.lang.String html)` HTML-sanitizes a string.

    - ### Methods inherited from class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Method Detail

    - #### getInstance

          public static SimpleHtmlSanitizer getInstance()

      Return a singleton SimpleHtmlSanitizer instance.
      Returns:
        the instance

    - #### sanitizeHtml

          public static SafeHtml sanitizeHtml(java.lang.String html)

      HTML-sanitizes a string.

      The input string is processed as described above. The result of sanitizing the string is guaranteed to be safe to use (with respect to XSS vulnerabilities) in HTML contexts, and is returned as an instance of the `SafeHtml` type.

      Parameters:
        `html` - the input String
      Returns:
        a sanitized SafeHtml instance

    - #### sanitize

          public SafeHtml sanitize(java.lang.String html)

      Description copied from interface: `HtmlSanitizer`
      Sanitizes a string into `SafeHtml`.
      Specified by:
        `sanitize` in interface `HtmlSanitizer`
      Parameters:
        `html` - String containing untrusted HTML.
      Returns:
        Contents of `html`, sanitized according to the policy implemented by this sanitizer.