Databases Reference
In-Depth Information
screen. This interpretation is then re-presented to the user with text-to-speech, sound icons, or a Braille
output device.
There are three ways you can enable/disable Screen Reader Mode in your own application:
Add the
#SCREEN_READER_TOGGLE#
substitution string to the footer of your page
template. Doing so results in a link on your pages that viewers can use to toggle
the screen reader mode on and off.
•
•
Use the screen-reader APIs documented in the Oracle Application Express API
Reference. Using the APIs is more work than adding the substitution string to your
page footer, but they do provide you with more control.
•
Create links that enable and disable screen reader mode by executing f?p session
requests. For example:
<a href="f?p=&APP_ID.:&APP_PAGE_ID.:&APP_SESSION.:SET_SESSION_SCREEN_READER_ON">Reader
Mode On</a>
<a href="f?p=&APP_ID.:&APP_PAGE_ID.:&APP_SESSION.:SET_SESSION_SCREEN_READER_OFF">Reader
Mode Off</a>
APEX Flash charts are not currently accessible to screen readers, therefore when running in screen
reader mode the user will get a report representation of the information conveyed in the chart. A
separate report will be generated for each series of a multiple-series chart if the series were defined
as separate series. If the multiple series were defined in a single query, only one report will be
generated (Figure 2-56). Note that this feature only works with the new Flash Charts in APEX 4, based on
AnyChart 5.
When running in screen reader mode (Figure 2-57), these data tables contain descriptive text, in the
following format:
•
Summary Text
: In Application Builder, a combination of the chart title and chart
series title are used.
•
Column Headers
: In Application Builder, the column name/alias in the chart
series query is used to identify the columns in the report.
