Tell the html control if it has key focus currently, controls showing the I-beam cursor in text controls amongst other things

Enable/disable low-resource background mode, where javascript and repaint timers are throttled, resources are more aggressively purged from memory, and audio/video elements are paused. When background mode is enabled, all HTML5 video and audio objects will execute ".pause()" and gain the property "._steam_background_paused = 1". When background mode is disabled, any video or audio objects with that property will resume with ".play()".

Called when the texture has changed and should be updated

DPI Scaling factor

The size of the browser

The current Url

Tell the browser a unicode key has been pressed

Tell the browser a key has been pressed or released

Tell the browser a mouse button has been pressed

Tell the browser the mouse has moved

Tell the browser the mouse wheel has moved