gitlabhq/app/assets/javascripts/branch-graph.js.coffee

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class BranchGraph
constructor: (@element, @options) ->
@preparedCommits = {}
@mtime = 0
@mspace = 0
@parents = {}
@colors = ["#000"]
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@offsetX = 120
@offsetY = 20
@unitTime = 30
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@unitSpace = 10
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@load()
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load: ->
$.ajax
url: @options.url
method: "get"
dataType: "json"
success: $.proxy((data) ->
$(".loading", @element).hide()
@prepareData data.days, data.commits
@buildGraph()
, this)
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prepareData: (@days, @commits) ->
@collectParents()
for c in @commits
c.isParent = true if c.id of @parents
@preparedCommits[c.id] = c
@collectColors()
collectParents: ->
for c in @commits
@mtime = Math.max(@mtime, c.time)
@mspace = Math.max(@mspace, c.space)
for p in c.parents
@parents[p[0]] = true
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@mspace = Math.max(@mspace, p[1])
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collectColors: ->
k = 0
while k < @mspace
@colors.push Raphael.getColor(.8)
# Skipping a few colors in the spectrum to get more contrast between colors
Raphael.getColor()
Raphael.getColor()
k++
buildGraph: ->
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graphHeight = $(@element).height()
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graphWidth = $(@element).width()
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ch = Math.max(graphHeight, @offsetY + @unitTime * @mtime + 150)
cw = Math.max(graphWidth, @offsetX + @unitSpace * @mspace + 300)
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@r = r = Raphael(@element.get(0), cw, ch)
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top = r.set()
cuday = 0
cumonth = ""
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barHeight = Math.max(graphHeight, @unitTime * @days.length + 320)
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r.rect(0, 0, 26, barHeight).attr fill: "#222"
r.rect(26, 0, 20, barHeight).attr fill: "#444"
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for day, mm in @days
if cuday isnt day[0]
# Dates
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r.text(36, @offsetY + @unitTime * mm, day[0])
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.attr(
font: "12px Monaco, monospace"
fill: "#DDD"
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)
cuday = day[0]
if cumonth isnt day[1]
# Months
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r.text(13, @offsetY + @unitTime * mm, day[1])
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.attr(
font: "12px Monaco, monospace"
fill: "#EEE"
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)
cumonth = day[1]
for commit in @commits
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x = @offsetX + @unitSpace * (@mspace - commit.space)
y = @offsetY + @unitTime * commit.time
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@drawDot(x, y, commit)
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@drawLines(x, y, commit)
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@appendLabel(x, y, commit.refs) if commit.refs
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@appendAnchor(top, commit, x, y)
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@markCommit(x, y, commit, graphHeight)
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top.toFront()
@bindEvents()
bindEvents: ->
drag = {}
element = @element
dragger = (event) ->
element.scrollLeft drag.sl - (event.clientX - drag.x)
element.scrollTop drag.st - (event.clientY - drag.y)
element.on mousedown: (event) ->
drag =
x: event.clientX
y: event.clientY
st: element.scrollTop()
sl: element.scrollLeft()
$(window).on "mousemove", dragger
$(window).on
mouseup: ->
$(window).off "mousemove", dragger
keydown: (event) ->
# left
element.scrollLeft element.scrollLeft() - 50 if event.keyCode is 37
# top
element.scrollTop element.scrollTop() - 50 if event.keyCode is 38
# right
element.scrollLeft element.scrollLeft() + 50 if event.keyCode is 39
# bottom
element.scrollTop element.scrollTop() + 50 if event.keyCode is 40
appendLabel: (x, y, refs) ->
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r = @r
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shortrefs = refs
# Truncate if longer than 15 chars
shortrefs = shortrefs.substr(0, 15) + "" if shortrefs.length > 17
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text = r.text(x + 4, y, shortrefs).attr(
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"text-anchor": "start"
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font: "10px Monaco, monospace"
fill: "#FFF"
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title: refs
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)
textbox = text.getBBox()
# Create rectangle based on the size of the textbox
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rect = r.rect(x, y - 7, textbox.width + 5, textbox.height + 5, 4).attr(
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fill: "#000"
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"fill-opacity": .5
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stroke: "none"
)
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triangle = r.path(["M", x - 5, y, "L", x - 15, y - 4, "L", x - 15, y + 4, "Z"]).attr(
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fill: "#000"
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"fill-opacity": .5
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stroke: "none"
)
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label = r.set(rect, text)
label.transform(["t", -rect.getBBox().width - 15, 0])
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# Set text to front
text.toFront()
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appendAnchor: (top, commit, x, y) ->
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r = @r
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options = @options
anchor = r.circle(x, y, 10).attr(
fill: "#000"
opacity: 0
cursor: "pointer"
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).click(->
window.open options.commit_url.replace("%s", commit.id), "_blank"
).hover(->
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@tooltip = r.commitTooltip(x + 5, y, commit)
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top.push @tooltip.insertBefore(this)
, ->
@tooltip and @tooltip.remove() and delete @tooltip
)
top.push anchor
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drawDot: (x, y, commit) ->
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r = @r
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r.circle(x, y, 3).attr(
fill: @colors[commit.space]
stroke: "none"
)
r.rect(@offsetX + @unitSpace * @mspace + 10, y - 10, 20, 20).attr(
fill: "url(#{commit.author.icon})"
stroke: @colors[commit.space]
"stroke-width": 2
)
r.text(@offsetX + @unitSpace * @mspace + 35, y, commit.message.split("\n")[0]).attr(
"text-anchor": "start"
font: "14px Monaco, monospace"
)
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drawLines: (x, y, commit) ->
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r = @r
for parent, i in commit.parents
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parentCommit = @preparedCommits[parent[0]]
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parentY = @offsetY + @unitTime * parentCommit.time
parentX1 = @offsetX + @unitSpace * (@mspace - parentCommit.space)
parentX2 = @offsetX + @unitSpace * (@mspace - parent[1])
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# Set line color
if parentCommit.space <= commit.space
color = @colors[commit.space]
else
color = @colors[parentCommit.space]
# Build line shape
if parent[1] is commit.space
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offset = [0, 5]
arrow = "l-2,5,4,0,-2,-5,0,5"
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else if parent[1] < commit.space
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offset = [3, 3]
arrow = "l5,0,-2,4,-3,-4,4,2"
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else
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offset = [-3, 3]
arrow = "l-5,0,2,4,3,-4,-4,2"
# Start point
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route = ["M", x + offset[0], y + offset[1]]
# Add arrow if not first parent
if i > 0
route.push(arrow)
# Circumvent if overlap
if commit.space isnt parentCommit.space or commit.space isnt parent[1]
route.push(
"L", parentX2, y + 10,
"L", parentX2, parentY - 5,
)
# End point
route.push("L", parentX1, parentY)
r
.path(route)
.attr(
stroke: color
"stroke-width": 2)
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markCommit: (x, y, commit, graphHeight) ->
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if commit.id is @options.commit_id
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r = @r
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r.path(["M", x + 5, y, "L", x + 15, y + 4, "L", x + 15, y - 4, "Z"]).attr(
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fill: "#000"
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"fill-opacity": .5
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stroke: "none"
)
# Displayed in the center
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@element.scrollTop(y - graphHeight / 2)
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Raphael::commitTooltip = (x, y, commit) ->
boxWidth = 300
boxHeight = 200
icon = @image(commit.author.icon, x, y, 20, 20)
nameText = @text(x + 25, y + 10, commit.author.name)
idText = @text(x, y + 35, commit.id)
messageText = @text(x, y + 50, commit.message)
textSet = @set(icon, nameText, idText, messageText).attr(
"text-anchor": "start"
font: "12px Monaco, monospace"
)
nameText.attr(
font: "14px Arial"
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"font-weight": "bold"
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)
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idText.attr fill: "#AAA"
@textWrap messageText, boxWidth - 50
rect = @rect(x - 10, y - 10, boxWidth, 100, 4).attr(
fill: "#FFF"
stroke: "#000"
"stroke-linecap": "round"
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"stroke-width": 2
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)
tooltip = @set(rect, textSet)
rect.attr(
height: tooltip.getBBox().height + 10
width: tooltip.getBBox().width + 10
)
tooltip.transform ["t", 20, 20]
tooltip
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Raphael::textWrap = (t, width) ->
content = t.attr("text")
abc = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
t.attr text: abc
letterWidth = t.getBBox().width / abc.length
t.attr text: content
words = content.split(" ")
x = 0
s = []
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for word in words
if x + (word.length * letterWidth) > width
s.push "\n"
x = 0
x += word.length * letterWidth
s.push word + " "
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t.attr text: s.join("")
b = t.getBBox()
h = Math.abs(b.y2) - Math.abs(b.y) + 1
t.attr y: b.y + h
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@BranchGraph = BranchGraph