Fix line numbers when loading an url

assets/scripts/app/routes.coffee

@@ -1,4 +1,5 @@
 require 'travis/location'
+require 'travis/line_number_parser'
 
 Ember.Router.reopen
   location: (if testMode? then Ember.HashLocation.create() else Travis.Location.create())
@@ -45,7 +46,7 @@ Travis.BuildsRoute = Travis.AbstractBuidsRoute.extend(contentType: 'builds')
 Travis.PullRequestsRoute = Travis.AbstractBuidsRoute.extend(contentType: 'pull_requests')
 Travis.BranchesRoute = Travis.AbstractBuidsRoute.extend(contentType: 'branches')
 
-Travis.BuildRoute = Ember.Route.extend
+Travis.BuildRoute = Ember.Route.extend Travis.LineNumberParser,
   renderTemplate: ->
     @render 'build', outlet: 'pane', into: 'repo'
 
@@ -57,11 +58,14 @@ Travis.BuildRoute = Ember.Route.extend
   setupController: (controller, model) ->
     model = Travis.Build.find(model) if model && !model.get
 
+    if lineNumber = @fetchLineNumber()
+      controller.set('lineNumber', lineNumber)
+
     repo = @container.lookup('controller:repo')
     repo.set('build', model)
     repo.activate('build')
 
-Travis.JobRoute = Ember.Route.extend
+Travis.JobRoute = Ember.Route.extend Travis.LineNumberParser,
   renderTemplate: ->
     @render 'job', outlet: 'pane', into: 'repo'
 
@@ -73,6 +77,9 @@ Travis.JobRoute = Ember.Route.extend
   setupController: (controller, model) ->
     model = Travis.Job.find(model) if model && !model.get
 
+    if lineNumber = @fetchLineNumber()
+      controller.set('lineNumber', lineNumber)
+
     repo = @container.lookup('controller:repo')
     console.log model.toString()
     repo.set('job', model)

assets/scripts/app/views/log.coffee

@@ -19,6 +19,7 @@ Travis.reopen
     didInsertElement: ->
       @_super.apply this, arguments
       @createEngine()
+      @lineNumberDidChange()
 
     willDestroyElement: ->
       parts = @get('log.parts')
@@ -96,7 +97,7 @@ Log.Scroll.prototype = $.extend new Log.Listener,
     @tryScroll() if @number
 
   tryScroll: ->
-    if element = $("#log p:nth-child(#{@number})")
+    if (element = $("#log p:nth-child(#{@number})")) && element.length
       $('#main').scrollTop(0)
       $('html, body').scrollTop(element.offset()?.top) # weird, html works in chrome, body in firefox
       @highlight(element)

assets/scripts/lib/travis/line_number_parser.coffee

@@ -0,0 +1,5 @@
+Travis.LineNumberParser = Ember.Mixin.create
+  fetchLineNumber: ->
+    url = @container.lookup('router:main').get('url')
+    if match = url.match(/#L(\d+)$/)
+      match[1]