Summary: We currently require webpages to poll the current selection
when they want to be
notified of changes to the user's selection.This patch adds two events,
selectstart and
selectionchange, which allow the website to detect when the selection is
changed. selectstart
is fired when the user starts selecting, and selectionchange is fired
when the selection
changes for any reason.
Bug: https://bugzilla.mozilla.org/show_bug.cgi?id=571294
Link to standard:http://w3c.github.io/selection-api/#user-interactions
Platform coverage:All platforms.
Target release: Firefox 43.
Preference behind which this will be implemented:
"dom.select_events.enabled"
DevTools bug: N/A
Do other browser engines implement this: IE, Chrome, and Safari all
implement this API.
Security & Privacy Concerns: This API adds a new mechanism for canceling
user selections, which
could be abused. However it was already possible.
Web designer / developer use-cases: This is a useful tool for websites
which wish to be notified
when the user's selection changes, as currently websites have to poll
the selection in Firefox.
Michael
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