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Headers detection

That algorithm detects column or row headers in a table tag.

For the moment, it only detects th tags positioned as headers.

In the future, the algorithm will also look to the content of the cells in order to achieve the detection with the following criterions :

Data table detection

That algorithm distinguishes data tables from layout tables.

The criterions which define a data table are :

  • the cells contain text only.
  • the cells contain inline content only (span tags, a tags, etc...).

The criterions which define a layout table are :

  • the cells contain a lot of tags
  • the cells contain block content (div tags, p tags, etc...)
  • no column headers or line headers are defined
  • each column, each line has a different style applied

 

Rule0506a

Summary

Business description

Criterion : 5.6
Test : 5.6.a
Test description : Pour chaque tableau de données (balise table), chaque en-tête de colonnes a-t-il une balise th ?
Level :

Technical description

Scope :
Decision level :

05 Tables

Those tests are part of the tables topic of AccessiWeb 1.1 reference.

Rule0103c

Summary

Business description

Criterion : 1.3
Test : 1.3.c
Test description : Pour chaque bouton associé à une image (balise input avec l'attribut type="image") ayant un attribut alt, le contenu de cet attribut est-il pertinent ?
Level :

Technical description

Scope :
Decision level :

Rule0103a

Summary

Business description

Criterion : 1.3
Test : 1.3.a
Test description : Pour chaque image porteuse d'information (balise img) ayant un attribut alt, le contenu de cet attribut est-il pertinent ?
Level :

Technical description

Scope :
Decision level :

Rule0103b

Summary

Business description

Criterion : 1.3
Test : 1.3.b
Test description : Pour chaque zone (balise area) d'une image réactive, porteuse d'information et ayant un attribut alt, le contenu de cet attribut est-il pertinent ?
Level :

Technical description

Scope :
Decision level :

Rule0102b

Summary

Business description

Criterion : 1.2
Test : 1.2.b
Test description : Pour chaque zone non cliquable (balise area avec l'attribut nohref), non porteuse d'information et ayant un attribut alt, le contenu de cet attribut est-il vide (alt="") ?
Level :

Technical description

Scope :
Decision level :

Decorative image detection

That algorithm is used in order to detect that an image is decorative only, meaning that it does not give any particular information to the user.

The result of that algorithm may be decorative, meaningfull which means that the image actually gives informations to the user, or need more info if it could not decide.

The criterions which define a decorative image are :

AND algorithm

That algorithm is used in order to create the final result of a rule process from the temporary results.

The result of a rule process on a selected node can be PASSED, FAILED, NEED_MORE_INFO or NOT_APPLICABLE. In both cases FAILED and NEED_MORE_INFO, a remark is added on the node. Then those temporary results are replaced by the final result of the rule process.

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