w3c xforms interactive web services; powerful client-side interfaces micah dubinko dave navarro...
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W3C XForms
Interactive Web Services;Powerful Client-side Interfaces
Micah Dubinko Dave Navarro David Cleary
A Brief History of Web Forms
1993: HTML forms1994–2000: Nothing happenedToday: XForms
HTML Forms Limitations
Some Assembly Required <input value=“initial value”>
Primitive Data Representation Urlencoded? Ugh.
Need Script to do anything… Validations Calculations Dynamic Forms
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 ToolsLeverage XPath, XML Schema, XSLT, SVGAny Time, Any Place, and on Any Device
How It Works
XSLT XForms
<>
<> <> <> <>
Source tree
Instance data
Stylesheet tree
XForms Processing
XSLT
Processing
XForms User Interface
XForms Model
XForms Model
Defines the ‘Purpose’ of the formIncludes the following: Instance Data Submit Information XML Schema Information XForms specific properties and actions
Model and Instance can be synthesized
XForms Instance
Provides template for your dataProvides default or partially submitted dataCan be inline or referenced externally
XForms Schema Support
Full XML Schema can be inline or externally referencedSchema fragments can be inline Create user defined datatypes
Instance data can be annotated with type informationClient validates simple types, not structure
XForms Conformance Profiles
Two conformance profiles to support wide range of devicesBasic includes subset of XML Schema datatypesFull includes complete XML Schema support
XForms Constraints
XML Schema defines static contraintsXForms extends these with ‘computed expressions’Evaluated at runtime Is something relevant or required? Calculated fields
XForms Actions
Defines common set of behaviors for formsBased on XML Events specificationAllows event processing without requiring Javascript
XForms Submit Info
Provides How, Where, and What to submit Multiple models per form Partial form submission
Default is ‘post’ of XML Instance
Help Make XForms Better!
XForms “Smoke Tests”Containing Document Schemahttp://dubinko.info/xforms/
Vote For XForms in Mozilla!http://bugzilla.mozilla.org/show_bug.cgi?id=97806
Try Out XForms
Implementations:X-Smiles http://www.xsmiles.orgMozquito http://www.mozquito.comApache Cocoon http://xml.apache.org/cocoon/Chiba http://sourceforge.net/projects/chiba/ExFormula http://sourceforge.net/projects/exformula/
Authoring ToolsCardiff LiquidOffice (demo)http://www.Cardiff.com/xforms/
For More Information…
[email protected] (subj: “Subscribe”)http://www.w3.org/TR/xforms/http://www.w3.org/MarkUp/Formshttp://www.xml.com/http://www.xmml.com/ (SVG site)www.zvon.org/xxl/XForms1.0/Output/More?