Extend keyboard support for the SeekBar, and pass unhandled keydown events from components back to the player.
Switch from raw keycodes to the keycode module.
Using `userActions.hotkeys`, which can either be a function to match the hotkeys plugin, or an object with properties like `fullscreenKey`, see the documentation for more info.
This is currently off by default, we will consider turning it on by default in the future, see #5765.
Fixes#4048, fixes#3022.
Move the aria-live attribute to the control text element within buttons, rather than on the whole button, so it is not affected by the change of the title attribute, only by the change of the control text.
It seems like having aria-live on the button itself means that JAWS and NVDA announce the button both when the button text changes and when the title attribute changes. NVDA speaks the new label more times because it announces the button text as the label and the title as the description, so it says, for example, "pause button pause". JAWS doesn't appear to do this, so it doesn't repeat it as many times.
Partially addresses #5023
A we retained a lot of references to DOM elements in various components. Here we clear it up. Also, make sure that we remove unused listeners as they can retain objects as well.
Update evented mixin to null out the eventBusEl_ after the component is disposed.
Add a feature for components, to tell it not to auto-initialize the evented mixin.
Re-enable the tests that were removed in #4640.
These are a few performance improvements.
* Use textContent instead of innerHTML for text content.
* Construct TextTrackSettings content with HTML strings where possible because it's a bit faster than manual DOM construction.
* Do minimal DOM updates to time controls. This reduces our timeupdate footprint from ~2-2.5ms to ~1ms!
Prevent ClickableComponents re-adding event listeners each time enabled() is called.
* Keeps track of enabled state (this.enabled_)
* enable() doesn't do anything if the component is enabled, so the event handlers are not re-added
Fixes#4312
Fix the structure of elements in menus so that actionable elements are not children of actionable elements, as required by ARIA.
Remove unnecessary aria-labels on menus.
Prevents a title attribute from being applied to MenuItems.
MenuItem indicates to ClickableComponent that the control is not just an icon, so it shouldn't have a title attribute.
Fixes#3699
Remove method chaining from videojs. This helps keep the methods consistent especially since play() now returns a Promise in some cases. Also, it can add some performance benefits.
BREAKING CHANGE: player methods no longer return a player instance when called. Fixes#3704.
enable() and disable() on clickable components is only cosmetic. "Disabled" implies the control should not be functional.
* Remove event listeners on disable() and add back on enable().
* Move adding listeners from constructor to enable
* Remove tabindex from disabled components and add disabled attribute to disabled buttons to prevent keyboard access.
