From a065e04d529da1d847b5062a12c46d916408bf32 Mon Sep 17 00:00:00 2001 From: Peter Bengtsson Date: Tue, 8 Dec 2020 21:46:22 -0500 Subject: update based on https://github.com/mdn/yari/issues/2028 --- files/pt-br/web/accessibility/xforms/index.html | 198 --------------------- .../web/accessibility/xforms/upload/index.html | 45 ----- 2 files changed, 243 deletions(-) delete mode 100644 files/pt-br/web/accessibility/xforms/index.html delete mode 100644 files/pt-br/web/accessibility/xforms/upload/index.html (limited to 'files/pt-br/web/accessibility/xforms') diff --git a/files/pt-br/web/accessibility/xforms/index.html b/files/pt-br/web/accessibility/xforms/index.html deleted file mode 100644 index 91b47d43f0..0000000000 --- a/files/pt-br/web/accessibility/xforms/index.html +++ /dev/null @@ -1,198 +0,0 @@ ---- -title: XForms Accessibility -slug: Web/Accessibility/XForms -tags: - - Accessibility - - NeedsTranslation - - Obsolete - - TopicStub - - XForms -translation_of: Mozilla/Tech/Accessibility/XForms ---- -

 

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Intoduction

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This article provides a quick guide to how accessibility is handled in Gecko for XForms.. Assistive technologies API for XForms is supported starting from Firefox 3 (Gecko 1.9). Implementation of accessible objects for XForms elements is based on top of the existing object hierarchy introduced in the Mozilla accessibility module. XForms elements behavior is implemented in accordance with accessible toolkit checklist.

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In general, when elements are similar to HTML elements, they are exposed to MSAA/ATK in a similar way.

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Get Build

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Subsections below explain how you can obtain accessible XForms-enabled build. These are either downloading latest build of firefox or building it yourself.

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Downloading Builds

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Notion: XForms is no longer distributed with Firefox build. You must build it yourself. See section below.
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For Firefox, you may directly download the nighly "trunk" build of Firefox and install the XForms extension which lives in 'xpi' directory of the build. Note, XForms accessibility is implemented only on trunk. Trunk builds are not considered stable and should not be installed on top of the Firefox used for daily browsing. Currently we have verified that XForms accessibility is working on the Windows platform, and Linux testing has not yet been done, although everything should work and is ready to be tested. You will find trunk builds of Firefox at ftp.mozilla.org, trunk builds of XForms extension (Windows) at ftp.mozilla.org or trunk builds of XForms extension (Linux) ftp.mozilla.org.

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Build It Yourself

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If you would like to build firefox/seamonkey yourself then please ensure your .mozconfig file has the following option:

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How To Test

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There are two approaches to test XForms accessibility. The first is to use and assistive technology such as a screen reader, or an accessibility testing tool, to make sure XForms elements have proper accessible objects. Or you may be guided by toolkit checklist to check keyboard navigation for XForms controls.

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You can try the following link to test XForms accessibility:

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Keyboard Navigation Issues

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Though XForms spec declares navindex attribute to define the navigation sequence (see 1.0 specs or 1.1 specs) but Rich Schwerdtfeger (Distinguished Engineer, SWG Accessibility Architect/Strategist Chair, IBM Accessibility Architecture Review Board) gave some clarification about navindex. He wrote:

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Navindex was in XForms - it was stripped out as it was believed the focus model was dependent on the content which used it. So, yes we don't care about navindex in XForms. If you use xhtml1.x use tabindex. If you use Xhtml2 use nextfocus.
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Therefore since Mozilla XForms works in XHTML (1.x) or XUL documents only then we use tabindex instead. Note, we support -moz-user-focus style neither for XHTML or XUL.

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AT API

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Accessible properties

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This section describes common rules how accessibility properties are formed for forms control elements.

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name

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It is formed from value of child XForms label element if the element doesn't have labelledby attribute.

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description

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It is formed from value of child XForms hint element if the element doesn't have describedby attribute.

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state

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It is formed as well from model item properties (MIPs) of instance node that XForms element is bound to as from valid/invalid or in-range/out-of-range states of instance node. Instance node states are mapped to accessibility state constants declared in nsIAccessibleStates interface like it shown below:

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attributes

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Redefines datatype ARIA attribute. Its value is XML Schema builit-in datatype of instance node that XForms element is bound to.

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children

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Mozilla XForms implementation allows form control elements to have child elements. Therefore accessible children are formed from any accessible child elements of form control element and from elements that are introduced by its presentation.

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Forms Controls Module

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Some of form control elements may be represented in few ways by different widgets. This section lists accessible presentations for form control elements.

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input

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A key xforms element to show and change the instance data to which it is bound (see the spec, the docs). The follwoing representations input element are accessible:

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secret

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Used for inputting passwords (see the spec, the docs). This element is represented by password field.

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textarea

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Serves to show/change multiline text (see the spec, the docs). This element is represented by multiline text field.

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output

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Serves to show instance data that the element is bound to (see the spec, the docs). It can have the following presentations:

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upload

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Provides a means for the user to select a file (see the spec, the docs). This element is represented by upload.

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range

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Allows the user to choose a value from within a specific range of values (see the spec, the docs). Currently it is represented by a slider only.

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trigger

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Allows the user to initiate actions (see the spec, the docs). This element is represented by button.

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submit

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Invokes the submission of the selected instance data to its target destination (see the spec, the docs). This element is represented by button.

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select

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Allows the user to choose one or multiple values from a list of pre-defined values (see the spec, the docs). It can have the following representations:

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select1

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Allows the user to choose a single value from a list of pre-defined values (see the spec, the docs). It can have the following representations:

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Additional Elements

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These elements may be used as child elements to the form controls described above. Some of these elements are not accessible itself but they makes accessibility properties for XForms elements that hold them.

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label

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Specifies the label for the xforms control (see the spec, the docs). Every form control other than the output element must contain a label element. The value of label element is used as name of accessible object.

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help

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Specifies contextual help for the containing form control (see the spec, the docs). The help element has ROLE_ALERT role.

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hint

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Similar to a tooltip (see the spec, the docs). The value of hint element is used as description of accessible object.

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alert

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This message will be shown when the form control cannot properly bind to instance data or when the instance data value is invalid or out of the specified range of selectable values (see the spec, the docs). The alert element has ROLE_ALERT role for both usual and inline alert elements.

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message

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Used in combination with event listeners to display a message to the user when the specified event occurs (see the spec, the docs). The message element has ROLE_ALERT role.

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Resources

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Below you will find a list of XForms/Accessiblity resources:

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« Accessibility XForms Support Page

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Sumário

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Provê meios para usuários selecionarem arquivos. Essa apresentação é usada para upload de elementos (veja o documento). A representação do upload é combinada com o campo de texto para mostrar a URL do arquivouploaded, o botão de upload e o botão de limpeza.

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Interfaces Expostas

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Propriedades de Acessibilidade

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nsIAccessible

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Accessible children

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