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-rw-r--r--lib/dom_utils.coffee7
1 files changed, 7 insertions, 0 deletions
diff --git a/lib/dom_utils.coffee b/lib/dom_utils.coffee
index 8e953405..82c13287 100644
--- a/lib/dom_utils.coffee
+++ b/lib/dom_utils.coffee
@@ -288,6 +288,13 @@ DomUtils =
flashEl = @addFlashRect rect
setTimeout((-> DomUtils.removeElement flashEl), 400)
+ getViewportTopLeft: ->
+ if getComputedStyle(document.documentElement).position == "static"
+ top: window.scrollY, left: window.scrollX
+ else
+ rect = document.documentElement.getBoundingClientRect()
+ top: -rect.top, left: -rect.left
+
suppressPropagation: (event) ->
event.stopImmediatePropagation()