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# NOTE(smblott). Ultimately, all of the FindMode-related code should be moved to this file.
# When we use find mode, the selection/focus can end up in a focusable/editable element. In this situation,
# special considerations apply. We implement three special cases:
# 1. Be an InsertModeBlocker. This prevents keyboard events from dropping us unintentionally into insert
# mode. This is achieved by inheriting from InsertModeBlocker.
# 2. Prevent all keyboard events on the active element from propagating. This is achieved by setting the
# trapAllKeyboardEvents option. There's some controversy as to whether this is the right thing to do.
# See discussion in #1415. This implements option 2 from there, although option 3 would be a reasonable
# alternative.
# 3. If the very-next keystroke is Escape, then drop immediately into insert mode.
#
class PostFindMode extends InsertModeBlocker
constructor: (findModeAnchorNode) ->
element = document.activeElement
super
name: "post-find"
# Be a singleton. That way, we don't have to keep track of any currently-active instance. Such an
# instance is automatically deactivated when a new instance is created.
singleton: PostFindMode
trapAllKeyboardEvents: element
return @exit() unless element and findModeAnchorNode
# Special considerations only arise if the active element can take input. So, exit immediately if it
# cannot.
canTakeInput = DomUtils.isSelectable(element) and DomUtils.isDOMDescendant findModeAnchorNode, element
canTakeInput ||= element.isContentEditable
canTakeInput ||= findModeAnchorNode.parentElement?.isContentEditable
return @exit() unless canTakeInput
self = @
@push
keydown: (event) ->
if element == document.activeElement and KeyboardUtils.isEscape event
self.exit()
new InsertMode element
DomUtils.suppressKeyupAfterEscape handlerStack
return false
@remove()
true
# Various ways in which we can leave PostFindMode.
@push
focus: (event) => @alwaysContinueBubbling => @exit()
blur: (event) => @alwaysContinueBubbling => @exit()
keydown: (event) => @alwaysContinueBubbling => @exit() if document.activeElement != element
root = exports ? window
root.PostFindMode = PostFindMode
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