# Oracle9iAS Portal Web Clipping Portlet - Supported Content and Restrictions

An Oracle9iAS Portal Technical Note
January 2003

| Introduction | Clippable Content | Unclippable Content | More Information |

## Introduction

Due to the various ways of designing a Web page and even more ways of combining elements like HTML, Plug-Ins, Applets, JavaScript, etc. there are certain Guidelines and restrictions when using the Oracle9iAS Portal Web Clipping Portlet. This note covers an overview of clippable and not clippable Web content.

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## Page content that can be clipped

- HTML 4.0.1 pages, including:
  - Clipping of <table>, <td>, <img>, <span>, <div> tagged content
  - Preservation of <head> styles and fonts, Cascading Style Sheets (CSS)
  - UTF-8 compliant character sets
  - Navigation through hyperlinks (HTTP GET), form submissions (HTTP POST), frames, URL redirection.
- Form submissions are securely recorded for “replay” in portlet “show” mode. HTTPS-based external Web sites can also be navigated and clipped, provided that appropriate server certificates are acquired. Refer to the Oracle9iAS Portal Web Clipping Portlet User’s and Administrator’s Guide for more information.
- Support for NLS in URL and URL parameters
- Portal user customization of input parameters
- Session maintenance for Web sites that require login
  - The Web Clipping Provider maintains two separate sessions -- one to the external Web site, and one to the Portal instance on portlet “show” mode. In addition to form-based submission of username/password information, HTTP “Basic” and “Digest” Authentication Schemes are supported. For example, the studio allows navigation through HTTP authentication challenges that pop up in browser dialog boxes.
- Most non-HTML elements are also supported, including applets, plugin content (e.g. embedded Quicktime video, Macromedia Flash presentation), and client-side Javascript (v1.2).

### Limitations

- NLS/internationalization limitations
  - Character set must be specified in the meta tags or HTTP header; if not specified, the studio & provider will default to UTF-8 character set
  - Languages not supported under UTF-8 will not be shown correctly
  - Characters from two or more character sets specified on a page will not be shown properly.
- “Back” and “forward” buttons in studio operate on the whole page, not on individual frames
- Pages linked from plugin content (e.g. Macromedia Flash)
- Customization of HTTP parameters with multiple values
- Javascript-based encryption of username/password for login pages

## Page content that cannot be clipped

- Global Javascript statements that contain doc.write()
- Javascript in sectioned Web clipping that writes additional Javascript

## More Information

- Oracle9iAS Portal Web Clipping Portlet User’s and Administrator’s Guide

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