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# NOTE(smblott). Ultimately, all of the FindMode-related code should be moved here.
# This prevents unmapped printable characters from being passed through to underlying page; see #1415. Only
# used by PostFindMode, below.
class SuppressPrintable extends Mode
constructor: (options) ->
super options
handler = (event) => if KeyboardUtils.isPrintable event then @suppressEvent else @continueBubbling
type = document.getSelection().type
# We use unshift here, so we see events after normal mode, so we only see unmapped keys.
@unshift
_name: "mode-#{@id}/suppress-printable"
keydown: handler
keypress: handler
keyup: (event) =>
# If the selection type has changed (usually, no longer "Range"), then the user is interacting with
# the input element, so we get out of the way. See discussion of option 5c from #1415.
if document.getSelection().type != type then @exit() else handler event
# When we use find, the selection/focus can land in a focusable/editable element. In this situation, special
# considerations apply. We implement three special cases:
# 1. Disable insert mode, because the user hasn't asked to enter insert mode. We do this by using
# InsertMode.suppressEvent.
# 2. Prevent unmapped printable keyboard events from propagating to the page; see #1415. We do this by
# inheriting from SuppressPrintable.
# 3. If the very-next keystroke is Escape, then drop immediately into insert mode.
#
class PostFindMode extends SuppressPrintable
constructor: ->
return unless document.activeElement and DomUtils.isEditable document.activeElement
element = document.activeElement
super
name: "post-find"
# PostFindMode shares a singleton with the modes launched by focusInput; each displaces the other.
singleton: element
exitOnBlur: element
exitOnClick: true
keydown: (event) -> InsertMode.suppressEvent event # Always truthy, so always continues bubbling.
keypress: (event) -> InsertMode.suppressEvent event
keyup: (event) -> InsertMode.suppressEvent event
# If the very-next keydown is Escape, then exit immediately, thereby passing subsequent keys to the
# underlying insert-mode instance.
@push
_name: "mode-#{@id}/handle-escape"
keydown: (event) =>
if KeyboardUtils.isEscape event
DomUtils.suppressKeyupAfterEscape handlerStack
@exit()
@suppressEvent
else
handlerStack.remove()
@continueBubbling
root = exports ? window
root.PostFindMode = PostFindMode
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