1
0
Fork 0
mirror of https://github.com/overleaf/overleaf.git synced 2024-12-20 11:33:46 -05:00
overleaf/services/web/public/coffee/directives/scroll.coffee
2014-07-16 10:52:06 +01:00

36 lines
856 B
CoffeeScript

define [
"base"
], (App) ->
App.directive "updateScrollBottomOn", ($timeout) ->
return {
restrict: "A"
link: (scope, element, attrs, ctrls) ->
# We keep the offset from the bottom fixed whenever the event fires
#
# ^ | ^
# | | | scrollTop
# | | v
# | |-----------
# | | ^
# | | |
# | | | clientHeight (viewable area)
# | | |
# | | |
# | | v
# | |-----------
# | | ^
# | | | scrollBottom
# v | v
# \
# scrollHeight
scrollBottom = 0
element.on "scroll", (e) ->
scrollBottom = element[0].scrollHeight - element[0].scrollTop - element[0].clientHeight
scope.$on attrs.updateScrollBottomOn, () ->
$timeout () ->
element.scrollTop(element[0].scrollHeight - element[0].clientHeight - scrollBottom)
, 0
}