mirror of
https://github.com/overleaf/overleaf.git
synced 2024-12-11 17:47:01 -05:00
285 lines
8.4 KiB
CoffeeScript
285 lines
8.4 KiB
CoffeeScript
define [
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"ace/ace"
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"ace/mode/latex"
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"ace/range"
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"moment"
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"libs/backbone"
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"libs/mustache"
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], (Ace, LatexMode, Range, moment)->
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DiffView = Backbone.View.extend
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template: $("#trackChangesDiffTemplate").html()
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events:
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"click .restore": (e) ->
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e.preventDefault()
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@trigger "restore"
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"click .restore-deleted": (e) ->
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e.preventDefault()
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@$("a.restore-deleted").attr("disabled", true)
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@$("a.restore-deleted").text("Restoring...")
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@trigger "restore-deleted"
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initialize: () ->
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if !@model.get("doc").get("deleted")
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@model.on "change:diff", () => @render()
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@model.fetch()
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else
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@render()
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render: ->
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changes = @getNumberOfChanges()
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html = Mustache.to_html @template, {
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changes: "#{changes} change#{if changes == 1 then "" else "s"}"
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name: @model.get("doc")?.get("name")
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}
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@$el.html(html)
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if @model.get("doc").get("deleted")
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@$(".change-info").hide()
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@$(".deleted-info").show()
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else
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diff = @model.get("diff")
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return unless diff?
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if !@model.get("from")? or !@model.get("to")? or changes == 0
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@$(".restore").hide()
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@createAceEditor()
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@aceEditor.setValue(@getPlainDiffContent())
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@aceEditor.clearSelection()
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@$ace = $(@aceEditor.renderer.container).find(".ace_scroller")
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@insertMarkers()
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@insertNameTag()
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@insertMoreChangeLabels()
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@bindToScrollEvents()
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@scrollToFirstChange()
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return @
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remove: () ->
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@$editor?.remove()
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@undelegateEvents()
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createAceEditor: () ->
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@$editor = @$(".track-changes-diff-editor")
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@$el.append(@$editor)
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@aceEditor = Ace.edit(@$editor[0])
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@aceEditor.setTheme("ace/theme/#{window.userSettings.theme}")
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@aceEditor.setReadOnly true
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@aceEditor.setShowPrintMargin(false)
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session = @aceEditor.getSession()
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session.setMode(new LatexMode.Mode())
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session.setUseWrapMode(true)
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@aceEditor.on "mousemove", (e) =>
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position = @aceEditor.renderer.screenToTextCoordinates(e.clientX, e.clientY)
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e.position = position
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@updateVisibleNames(e)
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bindToScrollEvents: () ->
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@aceEditor.getSession().on "changeScrollTop", (e) =>
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@updateMoreChangeLabels()
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getPlainDiffContent: () ->
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content = ""
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for entry in @model.get("diff") or []
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content += entry.u or entry.i or entry.d or ""
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return content
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getNumberOfChanges: () ->
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changes = 0
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for entry in @model.get("diff") or []
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changes += 1 if entry.i? or entry.d?
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return changes
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insertMarkers: () ->
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row = 0
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column = 0
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@entries = []
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for entry, i in @model.get("diff") or []
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content = entry.u or entry.i or entry.d
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content ||= ""
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lines = content.split("\n")
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startRow = row
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startColumn = column
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if lines.length > 1
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endRow = startRow + lines.length - 1
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endColumn = lines[lines.length - 1].length
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else
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endRow = startRow
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endColumn = startColumn + lines[0].length
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row = endRow
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column = endColumn
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range = new Range.Range(
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startRow, startColumn, endRow, endColumn
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)
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entry.range = range
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@addMarker(range, entry)
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if entry.i? or entry.d?
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@entries.push entry
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addMarker: (range, entry) ->
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session = @aceEditor.getSession()
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markerBackLayer = @aceEditor.renderer.$markerBack
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markerFrontLayer = @aceEditor.renderer.$markerFront
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lineHeight = @aceEditor.renderer.lineHeight
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dark = @_isDarkTheme()
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if entry.i? or entry.d?
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hue = entry.meta.user.hue()
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if entry.i?
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if dark
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style = "background-color : hsl(#{hue}, 100%, 28%);"
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else
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style = "background-color : hsl(#{hue}, 70%, 85%);"
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@_addMarkerWithCustomStyle session, markerBackLayer, range, "inserted-change-background", false, style
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if entry.d?
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if dark
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bgStyle = "background-color: hsl(#{hue}, 100%, 20%);"
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fgStyle = "border-bottom: 2px solid hsl(#{hue}, 100%, 60%);"
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else
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bgStyle = "background-color: hsl(#{hue}, 70%, 95%);"
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fgStyle = "border-bottom: 2px solid hsl(#{hue}, 70%, 40%);"
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fgStyle += "; height: #{Math.round(lineHeight/2) - 1}px;"
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@_addMarkerWithCustomStyle session, markerBackLayer, range, "deleted-change-background", false, bgStyle
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@_addMarkerWithCustomStyle session, markerBackLayer, range, "deleted-change-foreground", true, fgStyle
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_addMarkerWithCustomStyle: (session, markerLayer, range, klass, foreground, style) ->
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session.addMarker range, klass, (html, range, left, top, config) ->
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if range.isMultiLine()
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markerLayer.drawTextMarker(html, range, klass, config, style)
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else
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markerLayer.drawSingleLineMarker(html, range, "#{klass} ace_start", config, 0, style)
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, foreground
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_isDarkTheme: () ->
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rgb = $(".ace_editor").css("background-color");
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[m, r, g, b] = rgb.match(/rgb\(([0-9]+), ([0-9]+), ([0-9]+)\)/)
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r = parseInt(r, 10)
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g = parseInt(g, 10)
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b = parseInt(b, 10)
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return r + g + b < 3 * 128
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insertNameTag: () ->
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@$nameTagEl = $("<div class='change-name-marker'></div>")
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@$nameTagEl.css({
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position: "absolute"
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})
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@$nameTagEl.hide()
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@$ace.append(@$nameTagEl)
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insertMoreChangeLabels: () ->
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@$changesBefore = $("<a class='changes-before' href='#'><span></span> <i class='icon-arrow-up'></a>")
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@$changesAfter = $("<a class='changes-after' href='#'><span></span> <i class='icon-arrow-down'></a>")
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@$ace.append(@$changesBefore)
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@$ace.append(@$changesAfter)
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@$changesBefore.on "click", () =>
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@gotoLastHiddenChangeBefore()
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@$changesAfter.on "click", () =>
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@gotoFirstHiddenChangeAfter()
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@updateMoreChangeLabels()
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scrollToFirstChange: () ->
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@aceEditor.scrollToLine(0)
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setTimeout () =>
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if @entries? and @entries[0]?
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row = @entries[0].range.start.row
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@aceEditor.scrollToLine(row, true, false)
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, 10
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_drawNameTag: (entry, position) ->
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@$nameTagEl.show()
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if entry.i?
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text = "Added by #{entry.meta.user.name()}"
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else if entry.d?
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text = "Deleted by #{entry.meta.user.name()}"
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date = moment(parseInt(entry.meta.end_ts, 10)).format("Do MMM YYYY, h:mm a")
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text += " on #{date}"
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@$nameTagEl.text(text)
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position = @aceEditor.renderer.textToScreenCoordinates(position.row, position.column)
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offset = @$ace.offset()
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position.pageX = position.pageX - offset.left
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position.pageY = position.pageY - offset.top
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height = @$ace.height()
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hue = entry.meta.user.hue()
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if @_isDarkTheme()
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css = { "background-color" : "hsl(#{hue}, 100%, 20%)"; }
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else
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css = { "background-color" : "hsl(#{hue}, 70%, 90%)"; }
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if position.pageX + @$nameTagEl.width() < @$ace.width()
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css["left"] = position.pageX
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css["right"] = "auto"
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else
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css["right"] = 0
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css["left"] = "auto"
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if position.pageY > 2 * @$nameTagEl.height()
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css["bottom"] = height - position.pageY
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css["top"] = "auto"
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else
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css["top"] = position.pageY + @aceEditor.renderer.lineHeight
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css["bottom"] = "auto"
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@$nameTagEl.css css
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_hideNameTag: () ->
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@$nameTagEl?.hide()
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updateVisibleNames: (e) ->
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visibleName = false
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for entry in @entries or []
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if entry.range.contains(e.position.row, e.position.column)
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@_drawNameTag(entry, e.position)
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visibleName = true
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break
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if !visibleName
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@_hideNameTag()
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updateMoreChangeLabels: () ->
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return if !@$changesBefore or !@$changesAfter
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setTimeout () =>
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firstRow = @aceEditor.getFirstVisibleRow()
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lastRow = @aceEditor.getLastVisibleRow()
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changesBefore = 0
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changesAfter = 0
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@lastHiddenChangeBefore = null
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@firstHiddenChangeAfter = null
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for entry in @entries or []
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if entry.range.start.row < firstRow
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changesBefore += 1
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@lastHiddenChangeBefore = entry
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if entry.range.end.row > lastRow
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changesAfter += 1
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@firstHiddenChangeAfter ||= entry
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if changesBefore > 0
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@$changesBefore.find("span").text("#{changesBefore} more change#{if changesBefore > 1 then "s" else ""} above")
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@$changesBefore.show()
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else
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@$changesBefore.hide()
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if changesAfter > 0
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@$changesAfter.find("span").text("#{changesAfter} more change#{if changesAfter > 1 then "s" else ""} below")
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@$changesAfter.show()
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else
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@$changesAfter.hide()
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, 100
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gotoLastHiddenChangeBefore: () ->
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return if !@lastHiddenChangeBefore
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@aceEditor.scrollToLine(@lastHiddenChangeBefore.range.start.row, true, false)
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gotoFirstHiddenChangeAfter: () ->
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return if !@firstHiddenChangeAfter
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@aceEditor.scrollToLine(@firstHiddenChangeAfter.range.end.row, true, false)
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resize: () ->
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@aceEditor?.resize()
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return DiffView
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