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* [http://www.passani.it/gap/ XHTML-MP Authoring Practices]
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'''XHTML Mobile Profile''' (XHTML MP) is a [[hypertext]]ual [[computer language]] standard designed specifically for [[mobile phone]]s and other resource-constrained devices.
It is an [[XHTML]] document type defined by the [[Open Mobile Alliance]]. XHTML-MP is derived from XHTML 1.1 Basic Profile by adding XHTML Modules, with later versions of the standard adding more modules. However, for certain modules, XHTML-MP does not mandate a complete implementation so a XHTML-MP browser may not be fully conforming on all modules.<br/>
The XHTML MP 1.1 DTD the current recommendation, finalized in October of 2006. Work on the 1.2 DTD continues but a release date is not yet known.
==DOCTYPE==
To validate as XHTML Mobile 1.1, a document must contain the following [[Document Type Declaration]], or DOCTYPE:
:<code><!DOCTYPE html PUBLIC "-//WAPFORUM//DTD XHTML Mobile 1.1//EN"<br />"<nowiki>http://www.openmobilealliance.org/tech/DTD/xhtml-mobile11.dtd</nowiki>"></code>
==MIME types==
The [[MIME]] type for XHTML Mobile Profile is "application/vnd.wap.xhtml+xml". Conforming [[User agent|user agents]] should also accept "application/xhtml+xml" and "text/html".
==Versions==
Version 1.2 added form and object support. Version 1.1 added full scripting support intended to be used with [[ECMAScript Mobile Profile]]. Version 1.0 extended XHTML 1.1 Basic Profile with certain presentation elements and basic scripting support.
==Supported Modules==
Modules included in XHTML-MP 1.2 are:
* Structure
* Texts
* Hypertext
* List
* Forms
* Basic Tables
* Image
* Object
* Metainformation
* Scripting
* Style Sheet
* Style Attribute
* Link
* Base
XHTML-MP 1.2 also includes partial support for:
* Presentation
* Intrinsic Events
* Legacy
Finally, version 1.2 includes an OMA-specific module ("Text Input Modes") for dealing with the various input modes allowed on mobile phones.
==Development pitfalls==
Many problems arise when content written in XHTML is shown on different devices. Some will honor colors specified in [[CSS]] while some will not, some will render tables properly while others won't, just to mention some examples. Building an adaptative application means delivering different content to different devices, according to their capabilities. This can bring huge complexity, given the number of different devices in the market with different hardware (screen-sizes, coloring capacity, buttons, memory and speed) and [[Web_browser|browsers]]. Software updates on mobile browsers are much more difficult than with desktop browsers, and as a result broken software tends to stay in use until the phone is discarded.
Many software initiatives present their solution to this problem. Most of them provide a proprietary language to write WAP content, which will render different content (XHTML-MP, [[Wireless_Markup_Language|WML]], [[CHTML]], etc) according to the requesting device. One free initiative is [[Wurfl|WURFL]], which uses a hierarchical [[XML]] configuration file mapping hundreds of device capabilities, and a "Wireless Abstraction Layer" called WALL which allows writing tags that are automatically converted into the type of markup supported by the device.
==External links==
* [http://www.openmobilealliance.org/ www.openmobilealliance.org]
* [http://www.openmobilealliance.org/release_program/docs/Browsing/V2_2-20061020-A/OMA-WAP-XHTMLMP-V1_1-20061020-A.pdf XHTML MP Specification] as of 20 October, 2006.
* W3C Recommendation for [http://www.w3.org/TR/xhtml11/ XHTML 1.1]
* W3C Recommendation for [http://www.w3.org/TR/2001/REC-xhtml-modularization-20010410/ Modularization of XHTML] as of April 10, 2001.
* [http://www.littlespringsdesign.com/design/xhtmlinfo/ An Overview of Mobile Versions of XHTML]
* [http://www.passani.it/gap/ XHTML-MP Authoring Practices]
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[[Categoria:Linguaggi di markup]]
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