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Option (ALT) + drag to copy the block #188

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Option (ALT) + drag to copy the block #188

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10 changes: 9 additions & 1 deletion src/controller.coffee
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Original file line number Diff line number Diff line change
Expand Up @@ -1787,7 +1787,10 @@ hook 'mouseup', 1, (point, event, state) ->
# across parenthesis insertion
hadTextToken = @draggingBlock.start.next.type is 'text'

@spliceOut @draggingBlock
# Don't remove the original block if the alt key is pressed
# TODO: For windows, this would be the CTRL key?
if not event.altKey
@spliceOut @draggingBlock

@clearHighlightCanvas()

Expand All @@ -1799,6 +1802,11 @@ hook 'mouseup', 1, (point, event, state) ->
# beginning or at its end.
#
# We will need to log undo operations here too.

# For ALT-drag to copy the block
if event.altKey
@draggingBlock = @draggingBlock.clone()

switch @lastHighlight.type
when 'indent', 'socket'
@spliceIn @draggingBlock, @lastHighlight.start
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