- From: Sueann Nichols <ssnichol@us.ibm.com>
- Date: Mon, 5 Oct 2009 14:56:28 -0400
- To: WAI-AUWG List <w3c-wai-au@w3.org>
- Message-ID: <OF6FFDC0CF.74D9D1ED-ON85257646.00655841-85257646.00680BFB@us.ibm.com>
Minor updates to examples a3.1, a3.2 and a3.3. Sueann Nichols 877-202-9272 (t/l) 930-0636 ssnichol@us.ibm.com IBM Human Ability & Accessibility Center http://www.ibm.com/able ----- Forwarded by Sueann Nichols/Fort Lauderdale/IBM on 10/05/2009 02:26 PM ----- From: Jan Richards <jan.richards@utoronto.ca> To: Sueann Nichols/Fort Lauderdale/IBM@IBMUS Date: 10/05/2009 02:19 PM Subject: Re: Few minor changes to the Atag examples a3.1, a3.2 and a3.3 Hi Sueann, Thanks for the comments. Could you forward this to the group list? Cheers, Jan Sueann Nichols wrote: > *PRINCIPLE A.3: Editing views must be operable* > > *Guideline A.3.1 [For the authoring tool user interface] Enhance > keyboard access to authoring features. [**_Return to Guideline_* > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-20090909/Overview.html%5Clgl-tool-keyboard-access >*]* > > > *Rationale:* Some _authors_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Author%5Codefinition:authors > > with limited mobility or visual disabilities are not able to use a > mouse, and instead require full keyboard access. > > *A.3.1.1 Keyboard:* All functionality of the _authoring tool_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Authoring-Tool%5Codefinition:authoringtool > > is operable through a keyboard interface without requiring specific > timings for individual keystrokes, except where the underlying function > requires input that depends on the path of the _author_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Author%5Codefinition:authors >'s > movement and not just the endpoints. (Level A) > *Note 1:* The movement path exception relates to the underlying > function, not the input technique. For example, if using handwriting to > enter text, the input technique (handwriting) requires path-dependent > input, but the underlying function (text input) does not. > *Note 2:* This does not exclude and should not discourage providing > mouse input or other input methods in addition to keyboard operation. > > > · *Intent of the Success Criterion A.3.1.1:* > The intent of this success criterion is to ensure that, wherever > possible, authoring tools can be operated through a keyboard or > keyboard interface. Examples of "specific timings for individual > keystrokes" include situations where _authors_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Author%5Codefinition:authors > > would be required to repeat or execute multiple keystrokes within > a short period of time or where a key must be held down for an > extended period before the keystroke is registered. The phrase > "except where the underlying function requires input that depends > on the path of the _author_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Author%5Codefinition:authors >'s > movement and not just the endpoints" is included to separate those > things that cannot reasonably be controlled from a keyboard. > > · *Examples that meet the Success Criterion:* > > · > > o *Drag-and-drop feature:* > An _authoring tool_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Authoring-Tool%5Codefinition:authoringtool > > that includes a drag-and-drop feature for adding > widgets to _web content_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Web-Content%5Codefinition:webcontent > > also includes allows the same widgets to be added from > a menu that can be operated with the keyboard. > > o *Drawing feature:* > An _authoring tool_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Authoring-Tool%5Codefinition:authoringtool > > has a drawing feature that enables _authors_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Author%5Codefinition:authors > > to create, size, position and rotate drawing objects > from the keyboard. > > · *Related Resources:* > o N/A > > *A.3.1.2 Avoiding Content Keyboard Traps:* The _authoring tool_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Authoring-Tool%5Codefinition:authoringtool > > prevents _keyboard traps_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Keyboard-Trap%5Codefinition:keyboardtrap > > as follows: (Level A) > > > · *(a) In the **_authoring tool user interface_* > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Authoring-Tool-Interface%5Codefinition:authoringtooluserinterface >: > If keyboard focus can be moved to a component using the keyboard, > then focus can be moved away from that component using standard > keyboard navigation commands (e.g., TAB key); and > > · *(b) In editing views that render content:* If an _editing view_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Editing-View%5Codefinition:editingview > > (e.g., _WYSIWYG_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-WYSIWYG%5Codefinition:WYSIWYG > > view) _renders_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Content-Renderings%5Codefinition:contentrendering > > _web content_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Web-Content%5Codefinition:webcontent >, > then a _documented_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Documentation%5Codefinition:documentation > > keyboard command is provided that will always restore keyboard > focus to a known location (e.g., the menus). > > · *Intent of the Success Criterion A.3.1.2:* > The intent of this success criterion is to ensure that neither the > _authoring tool_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Authoring-Tool%5Codefinition:authoringtool >'s > own user interface nor any rendered _web content_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Web-Content%5Codefinition:webcontent > > within _editing views_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Editing-View%5Codefinition:editingview > > "traps" keyboard focus. This is a common problem when an > interactive object is embedded in the _web content_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Web-Content%5Codefinition:webcontent >. > The user might be able to move focus to the object (e.g., by "tab" > key), but is then unable to move the focus out using the keyboard > because keyboard control has passed to the embedded application. > > · *Examples that meet the Success Criterion:* > > o *Non-web-based authoring tool:* > A _non-web-based authoring tool_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Web-Based-UI%5Codefinition:authoringtooluserinterface(Web-based) > > has a user interface that has been thoroughly tested > to ensure that no _keyboard traps_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Keyboard-Trap%5Codefinition:keyboardtrap > > exist. In addition, when keyboard focus is in the > _authoring tool_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Authoring-Tool%5Codefinition:authoringtool >'s > _WYSIWYG_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-WYSIWYG%5Codefinition:WYSIWYG > > _editing view_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Editing-View%5Codefinition:editingview >, > _authors_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Author%5Codefinition:authors > > can restore focus to the _authoring tool_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Authoring-Tool%5Codefinition:authoringtool >'s > menus at any time (i.e., by pressing the "alt" key). > > o *Web-based authoring tool:* > A _web-based authoring tool_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Web-Based-UI%5Codefinition:authoringtooluserinterface(Web-based) > > has a user interface that has been thoroughly tested > to ensure that no _keyboard traps_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Keyboard-Trap%5Codefinition:keyboardtrap > > exist. In addition, because the _authoring tool_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Authoring-Tool%5Codefinition:authoringtool > > relies on the _authors_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Author%5Codefinition:authors >' > _user agents_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-User-Agent%5Codefinition:useragent > > to render the _web content_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Web-Content%5Codefinition:webcontent > > being edited, the _authoring tool_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Authoring-Tool%5Codefinition:authoringtool > > can rely on a feature in the _user agent_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-User-Agent%5Codefinition:useragent > > (that is cited in the _conformance claim_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Clconf-claim>) > which restores focus to the address bar. > > · *Related Resources:* > o N/A > > *A.3.1.3 Keyboard Shortcuts:* The _authoring tool_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Authoring-Tool%5Codefinition:authoringtool > > provides keyboard shortcuts. (Level AA) > > > · *Intent of the Success Criterion A.3.1.3:* > The intent of this success criterion is to ensure that _authors_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Author%5Codefinition:authors > > using a keyboard interface can more easily access commonly used > functions of the _authoring tool_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Authoring-Tool%5Codefinition:authoringtool > > in a manner that is appropriate to the operating environment > (i.e., desktop systems generally have more keystrokes available to > be assigned as shortcuts than mobile devices). > > · *Examples that meet the Success Criterion:* > > o *Non-web-based authoring tool: * > An _authoring tool_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Authoring-Tool%5Codefinition:authoringtool > > provides keyboard shortcuts for menu of its menu > functions as well as access keys in the design of its > menus and dialog boxes. The choice of shortcut keys > follows platform conventions. > > o *Social networking application on a mobile device: * > A social networking application on a mobile device has > only a very few keyboard shortcuts available on its > targeted devices. These few keyboard shortcuts are > used for the most commonly accessed functions of the > application (e.g., home, list of friends). > > · *Related Resources:* > o The following is a non-exhaustive list of keyboard > shortcut conventions for various _platforms_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Platform%5Coplatform >: > @@JS to complete > § *Gnome/KDE: *"Gnome/KDE Keyboard > Shortcuts" /_[GNOME-KDE-KEYS]_/ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Clref-GNOME-KDE-KEYS > > > > § *Mac OS:* "Mac OS X keyboard shortcuts" > /_[MACOSX-KEYS]_/ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Clref-MACOSX-KEYS%5Coreference:MACOSX-KEYS > > > *A.3.1.4 Customize Keyboard Access:* The _author(s)_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Author%5Codefinition:authors > > can customize keyboard access to the _authoring tool_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Authoring-Tool%5Codefinition:authoringtool >. > (Level AAA) > > > · *Intent of the Success Criterion A.3.1.4:* > The intent of this success criterion is to ensure that _authors_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Author%5Codefinition:authors > > using a keyboard interface have the ability to remap the > _authoring tool_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Authoring-Tool%5Codefinition:authoringtool >'s > keyboard shortcuts in order to avoid keystroke conflicts, use > familiar keystroke combinations and optimize keyboard layout > (e.g., for one handed use). > > · *Examples that meet the Success Criterion:* > > o *Non-web-based authoring tool: * > An _authoring tool_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Authoring-Tool%5Codefinition:authoringtool > > has a keyboard setup utility that lists all of the > available keyboard shortcuts and allows _authors_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Author%5Codefinition:authors > > to associate each with any of the _authoring tool_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Authoring-Tool%5Codefinition:authoringtool >'s > commands (e.g., all of the menu commands). > > o *Web-based content management system:* > A content management system has a keyboard setup > utility that allows _authors_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Author%5Codefinition:authors > > to change the access keys that are available during > authoring. These access key rebindings are for the > _authors'_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Author%5Codefinition:authors > > use only and do not affect the _web content_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Web-Content%5Codefinition:webcontent > > being edited. > > o *Social networking application on a mobile device: * > A social networking application has a keyboard setup > utility that allows _authors_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Author%5Codefinition:authors > > to change their keyboard shortcuts for the site. The > remapping is saved in site cookies. > > · *Related Resources:* > o N/A > > *Guideline A.3.2 [For the authoring tool user interface] Provide authors > with enough time. [**_Return to Guideline_* > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-20090909/Overview.html%5Clgl-tool-control-time >*]* > > > *Rationale:* Some _authors_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Author%5Codefinition:authors > > who have difficulty typing, operating the mouse, or processing > information can be prevented from using systems with limits or requiring > a fast reaction speed, such as clicking on a moving target. > > *A.3.2.1 Data Saved:* If the _authoring tool_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Authoring-Tool%5Codefinition:authoringtool > > ends an _authoring session_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Authoring-Session%5Codefinition:authoringsession > > due to a time limit (e.g., an authenticated session expires), then the > _author(s)_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Author%5Codefinition:authors > > have the _global option_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Global-Option%5Codefinition:globaloption > > to ensure that the _web content_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Web-Content%5Codefinition:webcontent > > being edited is saved. (Level A) > *Note:* For _web-based authoring tools_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Web-Based-UI%5Codefinition:authoringtooluserinterface(Web-based) >, > this applies to any _web content_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Web-Content%5Codefinition:webcontent > > that has already been submitted to the server by the _user agent_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-User-Agent%5Codefinition:useragent >. > > > > · *Intent of the Success Criterion A.3.2.1:* > The intent of this success criterion is to ensure that the work an > author has produced is saved in the event that an authoring > session is ended due to a time limit. This is especially important > for some authors with disabilities who may take longer to > accomplish tasks. > > · *Examples that meet the Success Criterion:* > > o *Web-based content management system:* > A content management system has a login timeout > function that automatically logs _authors_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Author%5Codefinition:authors > > out after 20 minutes of inactivity. The _authors_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Author%5Codefinition:authors >' > work is automatically saved before they are logged out > for inactivity and a numerically incremented file name > is used in order to avoid overwriting _author_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Author%5Codefinition:authors >s' > previously saved versions. > > o *Wiki: > *A wiki has an auto-save feature that can be turned on > by _authors_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Author%5Codefinition:authors >. > The auto-save feature always saves before a login > timeout. > > · *Related Resources:* > o N/A > > *A.3.2.2 Timing Adjustable: *For each time limit that is set by the > _authoring tool_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Authoring-Tool%5Codefinition:authoringtool >, > at least one of the following is true: (Level A) > > > · *(a) Turn off:* The _author(s)_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Author%5Codefinition:authors > > are allowed to turn off the time limit before encountering it; or > > · *(b) Adjust:* The _author(s)_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Author%5Codefinition:authors > > are allowed to adjust the time limit before encountering it over a > wide range that is at least ten times the length of the default > setting; or > > · *(c) Extend:* The _author(s)_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Author%5Codefinition:authors > > are warned before time expires and given at least 20 seconds to > extend the time limit with a simple action (for example, "press > the space bar"), and the _author(s)_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Author%5Codefinition:authors > > are allowed to extend the time limit at least ten times; or > > · *(d) Real-time Exception:* The time limit is a required part of > a real-time event (e.g., a collaborative authoring system), and no > alternative to the time limit is possible; or > > · *(e) Essential Exception:* The time limit is essential and > extending it would invalidate the activity; or > > · *(f) 20 Hour Exception:* The time limit is longer than 20 hours. > > · *Intent of the Success Criterion A.3.2.2:* > The intent of this success criterion is to ensure that _authoring > tools_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Authoring-Tool%5Codefinition:authoringtool > > provide _authors_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Author%5Codefinition:authors > > with disabilities adequate time to perform their tasks. Any > process that happens without _author_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Author%5Codefinition:authors > > initiation after a set time or on a periodic basis is a time > limit. This includes partial or full updates of the screen (for > example, page refresh), or the expiration of a window of > opportunity for an _author_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Author%5Codefinition:authors > > to react to a request for input. It also includes user interface > functionality that is advancing or updating at a rate beyond the > _author_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Author%5Codefinition:authors >'s > ability to read and/or understand it. In other words, animated, > moving or scrolling information introduces a time limit. > Generally, turning off time limits is better than customizing the > length of time limits, which is better than requesting more time > before a time limit occurs. In some cases, however, it is not > possible to change the time limit (e.g., a collaborative > _authoring session_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Authoring-Session%5Codefinition:authoringsession >) > and exceptions are therefore provided for those cases. > > · *Examples that meet the Success Criterion:* > > o *Web-based content management system:* > A content management system has a login timeout > function that automatically logs _authors_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Author%5Codefinition:authors > > out after 20 minutes of inactivity. One minute before > the automatic log out, the system notifies _authors_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Author%5Codefinition:authors > > that the log out will occur unless they cancel the > notification (meeting (c)). The system also includes a > preference setting that lets _authors_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Author%5Codefinition:authors > > set the timing of the notification up to 10 minutes > before the automatic logout (meeting (b)). > > o *Real-time collaborative editing system:* > A collaborative editing system allows multiple > _authors_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Author%5Codefinition:authors > > to edit the same _web content_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Web-Content%5Codefinition:webcontent > > document simultaneously. An integral part of the > real-time collaborative activity is that any _author_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Author%5Codefinition:authors > > may edit or delete what others have just authored > (meeting (d)). > > · *Related Resources:* > o N/A > > *A.3.2.3 Moving Targets:* If a user interface component is moving (e.g., > animated vector graphic), then the _author(s)_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Author%5Codefinition:authors > > have the _option_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Global-Option%5Codefinition:globaloption > > to stop the movement. (Level A) > > > · *Intent of the Success Criterion A.3.2.3:* > The intent of this Success Criterion is to ensure that _authors_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Author%5Codefinition:authors > > are not prevented from using the _authoring tool_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Authoring-Tool%5Codefinition:authoringtool > > by a requirement for fast reactions. > > · *Examples that meet the Success Criterion:* > > o *Timeline-based authoring tool:* > A timeline-based interactive _web content_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Web-Content%5Codefinition:webcontent > > editor has an indicator of the current position on the > timeline that _authors_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Author%5Codefinition:authors > > can click and drag. When the interactive _web content_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Web-Content%5Codefinition:webcontent > > is being previewed, the indicator moves along the > timeline which can make it difficult to target with > the mouse. In this case, _authors_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Author%5Codefinition:authors > > can stop the indicator from moving with the "Stop" button. · *Related Resources:* > o N/A > > *Guideline A.3.3 [For the authoring tool user interface] Help authors > avoid flashing that could cause seizures.[**_Return to Guideline_* > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-20090909/Overview.html%5Clgl-tool-prevent-flash >*]* > > > *Rationale:* Flashing can cause seizures in _authors_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Author%5Codefinition:authors > > with photosensitive seizure disorder. > > *A.3.3.1 Static View Option:* If an _editing view_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Editing-View%5Codefinition:editingview > > _renders_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Content-Renderings%5Codefinition:contentrendering > > time-based content (e.g., animations), the _author(s)_ > <http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Author%5 > Codefinition:authors> have the _global option_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Global-Option%5Codefinition:globaloption > > of rendering only the initial state of time-based _web content_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Web-Content%5Codefinition:webcontent >. > (Level A) > > > · *Intent of the Success Criterion A.3.3.1:* > The intent of this success criterion is to ensure that _authors_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Author%5Codefinition:authors > > with photosensitive seizure disorder can use the _authoring tool_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Authoring-Tool%5Codefinition:authoringtool > > to open time-based _web content_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Web-Content%5Codefinition:webcontent > > without risk. > > · *Examples that meet the Success Criterion:* > > o *Blog: > *A blogging tool allows _authors_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Author%5Codefinition:authors > > to import of _video_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Video%5Codefinition:video > > files. _Authors_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Author%5Codefinition:authors > > have the option to turn off an auto-play feature so > that the _video_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Video%5Codefinition:video > > files are not played until a "Play" button is activated. > > o *WYSIWYG web page editor: * > A _WYSIWYG_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-WYSIWYG%5Codefinition:WYSIWYG > > _editing view_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Editing-View%5Codefinition:editingview > > is capable of rendering Javascript in real time. > _Authors_ > < http://www.w3.org/WAI/AU/2009/ED-ATAG20-TECHS-20090909/%5Cldef-Author%5Codefinition:authors > > have the option to turn off the real time rendering > feature, so that the Javascript is not rendered until > a "Play" button is activated. > > · *Related Resources:* > o N/A > > Sueann Nichols > > 877-202-9272 (t/l) 930-0636 > ssnichol@us.ibm.com > IBM Human Ability & Accessibility Center > http://www.ibm.com/able -- Jan Richards, M.Sc. User Interface Design Lead Adaptive Technology Resource Centre (ATRC) Faculty of Information University of Toronto Email: jan.richards@utoronto.ca Web: http://jan.atrc.utoronto.ca Phone: 416-946-7060 Fax: 416-971-2896
Received on Monday, 5 October 2009 18:57:09 UTC