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-rw-r--r--content_scripts/mode.coffee9
1 files changed, 9 insertions, 0 deletions
diff --git a/content_scripts/mode.coffee b/content_scripts/mode.coffee
index f631b4cd..b2019ef9 100644
--- a/content_scripts/mode.coffee
+++ b/content_scripts/mode.coffee
@@ -47,6 +47,15 @@ class Mode
@id = "#{@name}-#{@count}"
@log "activate:", @id
+ # If options.suppressAllKeyboardEvents is truthy, then all keyboard events are suppressed. This avoids
+ # the need for modes which block all keyboard events to 1) provide handlers for all keyboard events,
+ # and 2) worry about their return value.
+ if options.suppressAllKeyboardEvents
+ for type in [ "keydown", "keypress", "keyup" ]
+ do (type) ->
+ handler = options[type]
+ options[type] = (event) -> handler? event; false
+
@push
keydown: @options.keydown || null
keypress: @options.keypress || null