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48 lines
No EOL
1.7 KiB
CoffeeScript
48 lines
No EOL
1.7 KiB
CoffeeScript
define [
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"base",
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"utils/EventEmitter"
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], (App, EventEmitter) ->
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App.controller "ReviewPanelController", ($scope, $element) ->
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$scope.reviewPanel =
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entries: {}
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scroller = $element.find(".review-panel-scroller")
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list = $element.find(".review-entry-list")
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# Use these to avoid unnecessary updates. Scrolling one
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# panel causes us to scroll the other panel, but there's no
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# need to trigger the event back to the original panel.
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ignoreNextPanelEvent = false
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ignoreNextAceEvent = false
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$scope.scrollEvents = new EventEmitter()
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scrollPanel = (scrollTop, height) ->
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if ignoreNextAceEvent
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ignoreNextAceEvent = false
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else
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ignoreNextPanelEvent = true
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list.height(height)
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scroller.scrollTop(scrollTop)
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scrollAce = (e) ->
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if ignoreNextPanelEvent
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ignoreNextPanelEvent = false
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else
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ignoreNextAceEvent = true
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$scope.scrollEvents.emit "scroll", e.target.scrollTop
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scroller.on "scroll", scrollAce
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$scope.onScroll = scrollPanel # Passed into the editor directive for it to call
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# If we listen for scroll events in the review panel natively, then with a Mac trackpad
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# the scroll is very smooth (natively done I'd guess), but we don't get polled regularly
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# enough to keep Ace in step, and it noticeably lags. If instead, we borrow the manual
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# mousewheel/trackpad scrolling behaviour from Ace, and turn mousewheel events into
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# scroll events ourselves, then it makes the review panel slightly less smooth (barely)
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# noticeable, but keeps it perfectly in step with Ace.
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ace.require("ace/lib/event").addMouseWheelListener scroller[0], (e) ->
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deltaY = e.wheelY
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# console.log "mousewheel", deltaY
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scroller.scrollTop(scroller.scrollTop() + deltaY * 4)
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e.preventDefault() |