This avoids null dereference if a buggy caller calls
`toggleDropDown('none')` before `init()`. (Ideally the caller would be
fixed, but this is not always feasible.)
Cheerio provides jQuery-like objects but they wrap DOM Node-like
objects that are not 100% API compatible with the DOM spec. Because of
this, contentcollector, which is used in browsers and in Node.js
during HTML import, has until now needed to support two different
APIs. This commit modifies HTML import to use jsdom instead of cheerio
and simplifies contentcollector.
ace.js: removed the role 'application' from innerDocument.body. JAWS
do not read any text from the edit lines if this role is set.
domline.createDomLine: to give JAWS the ability to read the lines
correctly, it is required to set the attribute 'aria-live' to
'assertive'.
The `Node.nextSibling` property returns the next Node, not the next
Element. If whitespace, an HTML comment, or any other type of
non-Element Node is ever introduced between the Elements then
`.nextSibling` no longer returns the desired Element. Switching to
`Element.nextElementSibling` would work, but finding the Elements by
ID is more readable and future-proof.
* Define utility functions above their use to silence lint warnings.
* Use `.css()` instead of `.attr('style')` to manipulate style.
* Pass an object to `.attr()` rather than call once per attribute.
* Take advantage of chaining.
* Inline unnecessary `padUrl` variable.
* Delete some unnecessary comments.
It is possible for the stats to be read before the
`expressCreateServer` hook is called (in particular: when there is an
error during startup), which is when the `socketio` variable is set.
Check for non-null `socketio` before attempting to count the number of
socket.io connections.
Readability is increased by explicitly checking if jquery/sendkeys was
already loaded before evaluating it in the context of ace_inner and the
enclosing container (pad.html). Note that sendkeys is no longer
evaluated in the context of ace_outer, as this isn't needed
Also removes some IE 8/9 legacy code
