76 lines
2.4 KiB
CoffeeScript
76 lines
2.4 KiB
CoffeeScript
class BlobView
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constructor: ->
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# handle multi-line select
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handleMultiSelect = (e) ->
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[ first_line, last_line ] = parseSelectedLines()
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[ line_number ] = parseSelectedLines($(this).attr("id"))
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hash = "L#{line_number}"
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if e.shiftKey and not isNaN(first_line) and not isNaN(line_number)
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if line_number < first_line
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last_line = first_line
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first_line = line_number
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else
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last_line = line_number
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hash = if first_line == last_line then "L#{first_line}" else "L#{first_line}-#{last_line}"
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setHash(hash)
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e.preventDefault()
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# See if there are lines selected
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# "#L12" and "#L34-56" supported
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highlightBlobLines = (e) ->
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[ first_line, last_line ] = parseSelectedLines()
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unless isNaN first_line
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$("#tree-content-holder .highlight .line").removeClass("hll")
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$("#LC#{line}").addClass("hll") for line in [first_line..last_line]
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$.scrollTo("#L#{first_line}") unless e?
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# parse selected lines from hash
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# always return first and last line (initialized to NaN)
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parseSelectedLines = (str) ->
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first_line = NaN
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last_line = NaN
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hash = str || window.location.hash
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if hash isnt ""
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matches = hash.match(/\#?L(\d+)(\-(\d+))?/)
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first_line = parseInt(matches?[1])
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last_line = parseInt(matches?[3])
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last_line = first_line if isNaN(last_line)
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[ first_line, last_line ]
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setHash = (hash) ->
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hash = hash.replace(/^\#/, "")
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nodes = $("#" + hash)
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# if any nodes are using this id, they must be temporarily changed
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# also, add a temporary div at the top of the screen to prevent scrolling
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if nodes.length > 0
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scroll_top = $(document).scrollTop()
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nodes.attr("id", "")
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tmp = $("<div></div>")
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.css({ position: "absolute", visibility: "hidden", top: scroll_top + "px" })
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.attr("id", hash)
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.appendTo(document.body)
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window.location.hash = hash
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# restore the nodes
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if nodes.length > 0
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tmp.remove()
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nodes.attr("id", hash)
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# initialize multi-line select
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$("#tree-content-holder .line-numbers a[id^=L]").on("click", handleMultiSelect)
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# Highlight the correct lines on load
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highlightBlobLines()
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# Highlight the correct lines when the hash part of the URL changes
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$(window).on("hashchange", highlightBlobLines)
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@BlobView = BlobView
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