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W3C XForms

W3C XForms. Micah Dubinko Dave Navarro David Cleary. Interactive Web Services; Powerful Client-side Interfaces. A Brief History of Web Forms. 1993: HTML forms 1994–2000: Nothing happened Today: XForms. HTML Forms Limitations. Some Assembly Required <input value=“initial value”>

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W3C XForms

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  1. W3C XForms Micah Dubinko Dave Navarro David Cleary Interactive Web Services;Powerful Client-side Interfaces

  2. A Brief History of Web Forms • 1993: HTML forms • 1994–2000: Nothing happened • Today: XForms

  3. HTML Forms Limitations • Some Assembly Required • <input value=“initial value”> • Primitive Data Representation • Urlencoded? Ugh. • Need Script to do anything… • Validations • Calculations • Dynamic Forms

  4. Interactive Web Services • Some Assembly Required • <input value=“initial value”> • Primitive Data Representation • Urlencoded? Ugh. • Blending Purpose and Presentation • <input type=“radio | checkbox”> etc… • No validations, calculations XML In, XML Out Integration with Web Services; XML Tools Leverage XPath, XML Schema, XSLT, SVG Any Time, Any Place, and on Any Device

  5. How It Works <> XSLT XForms Stylesheet tree XForms Processing <> <> <> <> XSLT Processing Source tree Instance data

  6. XForms User Interface

  7. XForms Model

  8. XForms Model • Defines the ‘Purpose’ of the form • Includes the following: • Instance Data • Submit Information • XML Schema Information • XForms specific properties and actions • Model and Instance can be synthesized

  9. XForms Instance • Provides template for your data • Provides default or partially submitted data • Can be inline or referenced externally

  10. XForms Schema Support • Full XML Schema can be inline or externally referenced • Schema fragments can be inline • Create user defined datatypes • Instance data can be annotated with type information • Client validates simple types, not structure

  11. XForms Conformance Profiles • Two conformance profiles to support wide range of devices • Basic includes subset of XML Schema datatypes • Full includes complete XML Schema support

  12. XForms Constraints • XML Schema defines static contraints • XForms extends these with ‘computed expressions’ • Evaluated at runtime • Is something relevant or required? • Calculated fields

  13. XForms Actions • Defines common set of behaviors for forms • Based on XML Events specification • Allows event processing without requiring Javascript

  14. XForms Submit Info • Provides How, Where, and What to submit • Multiple models per form • Partial form submission • Default is ‘post’ of XML Instance

  15. Help Make XForms Better! • XForms “Smoke Tests” • Containing Document Schema • http://dubinko.info/xforms/ • Vote For XForms in Mozilla! • http://bugzilla.mozilla.org/show_bug.cgi?id=97806

  16. Try Out XForms • Implementations: • X-Smiles http://www.xsmiles.org • Mozquito http://www.mozquito.com • Apache Cocoon http://xml.apache.org/cocoon/ • Chiba http://sourceforge.net/projects/chiba/ • ExFormula http://sourceforge.net/projects/exformula/ • Authoring Tools • Cardiff LiquidOffice (demo) • http://www.Cardiff.com/xforms/

  17. For More Information… • www-forms@w3.org (subj: “Subscribe”) • http://www.w3.org/TR/xforms/ • http://www.w3.org/MarkUp/Forms • http://www.xml.com/ • http://www.xmml.com/ (SVG site) • www.zvon.org/xxl/XForms1.0/Output/ • More?

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