Fix log errors on 1.8.1

This part needs further refactoring, but for now I just fixed log view to
teardown and setup things properly in all cases something changes (when element
is inserted or removed, but also when log object is changed).

assets/scripts/app/controllers/job.coffee

@@ -1,7 +1,6 @@
 Travis.JobController = Em.Controller.extend
   needs: ['repo']
 
-  jobBinding: 'controllers.repo.job'
   repoBinding: 'controllers.repo.repo'
   commitBinding: 'job.commit'
   annotationsBinding: 'job.annotations'

assets/scripts/app/controllers/repo.coffee

@@ -1,8 +1,9 @@
 Travis.RepoController = Travis.Controller.extend
-  needs: ['repos', 'currentUser', 'build', 'request']
+  needs: ['repos', 'currentUser', 'build', 'request', 'job']
   currentUserBinding: 'controllers.currentUser'
 
   build: Ember.computed.alias('controllers.build.build')
+  job: Ember.computed.alias('controllers.job.job')
   request: Ember.computed.alias('controllers.request.model')
 
   slug: (-> @get('repo.slug') ).property('repo.slug')
@@ -24,6 +25,9 @@ Travis.RepoController = Travis.Controller.extend
       if build && jobs = build.get('jobs')
         jobs.forEach (j) -> j.updateTimes()
 
+  deactivate: ->
+    @stopObservingLastBuild()
+
   activate: (action) ->
     @stopObservingLastBuild()
     this["view#{$.camelize(action)}"]()

assets/scripts/app/models/log.coffee

@@ -6,9 +6,6 @@ require 'travis/log_chunks'
   isLoaded: false
   length: 0
 
-  init: ->
-    @setParts()
-
   fetchMissingParts: (partNumbers, after) ->
     return if @get('notStarted')
 
@@ -27,31 +24,34 @@ require 'travis/log_chunks'
             for part in parts
               @append part
 
-  setParts: ->
-    if parts = @get('parts')
+  parts: (->
+    #if Travis.config.pusher_log_fallback
+    #  Travis.LogChunks.create(content: [], missingPartsCallback: => @fetchMissingParts.apply(this, arguments))
+    #else
+    Ember.ArrayProxy.create(content: [])
+  ).property()
+
+  clearParts: ->
+    parts = @get('parts')
+    @notifyPropertyChange('parts')
+    Ember.run.next ->
+      # destroy old parts after they're refreshed
       parts.destroy()
 
-    if Travis.config.pusher_log_fallback
-      parts = Travis.LogChunks.create(content: [], missingPartsCallback: => @fetchMissingParts.apply(this, arguments))
-    else
-      parts = Ember.ArrayProxy.create(content: [])
-
-    @set 'parts', parts
-    # @set 'parts', Travis.ChunkBuffer.create(content: [])
-
   fetch: ->
     console.log 'log model: fetching log' if Log.DEBUG
-    @setParts()
+    @clearParts()
     handlers =
       json: (json) => @loadParts(json['log']['parts'])
       text: (text) => @loadText(text)
     Travis.Log.Request.create(id: id, handlers: handlers).run() if id = @get('job.id')
 
   clear: ->
-    @setParts()
+    @clearParts()
     @incrementProperty('version')
 
   append: (part) ->
+    return if @get('parts').isDestroying || @get('parts').isDestroyed
     @get('parts').pushObject(part)
 
   loadParts: (parts) ->

assets/scripts/app/routes.coffee

@@ -208,18 +208,17 @@ Travis.BuildRoute = Travis.Route.extend
     model = Travis.Build.find(model) if model && !model.get
 
     repo = @controllerFor('repo')
-    repo.set('build', model)
-    repo.activate('build')
+    #repo.set('build', model)
     @controllerFor('build').set('build', model)
-    repo.set('build', model)
+    repo.activate('build')
+    #repo.set('build', model)
 
   model: (params) ->
     Travis.Build.fetch(params.build_id)
 
   deactivate: ->
-    repo = @controllerFor('repo')
-    repo.set('build', null)
-    repo.set('job', null)
+    @controllerFor('job').set('job', null)
+    @controllerFor('build').set('build', null)
 
 Travis.JobRoute = Travis.Route.extend
   serialize: (model, params) ->
@@ -231,19 +230,19 @@ Travis.JobRoute = Travis.Route.extend
     model = Travis.Job.find(model) if model && !model.get
 
     repo = @controllerFor('repo')
-    repo.set('job', model)
+    @controllerFor('job').set('job', model)
     repo.activate('job')
 
     if build = model.get('build')
       @controllerFor('build').set('build', build)
-      repo.set('build', build)
 
   model: (params) ->
     Travis.Job.fetch(params.job_id)
 
   deactivate: ->
-    repo = @controllerFor('repo')
-    repo.set('job', null)
+    @controllerFor('build').set('build', null)
+    @controllerFor('job').set('job', null)
+
 
 Travis.RepoIndexRoute = Travis.Route.extend
   setupController: (controller, model) ->
@@ -258,8 +257,8 @@ Travis.RepoIndexRoute = Travis.Route.extend
 
   deactivate: ->
     repo = @controllerFor('repo')
-    repo.set('build', null)
-    repo.set('job', null)
+    @controllerFor('build').set('build', null)
+    @controllerFor('job').set('job', null)
 
 Travis.RepoRoute = Travis.Route.extend
   renderTemplate: ->
@@ -280,6 +279,9 @@ Travis.RepoRoute = Travis.Route.extend
     slug = "#{params.owner}/#{params.name}"
     Travis.Repo.fetchBySlug(slug)
 
+  resetController: ->
+    @controllerFor('repo').deactivate()
+
   actions:
     error: (error) ->
       # if error throwed has a slug (ie. it was probably repo not found)

assets/scripts/app/views/log.coffee

@@ -2,28 +2,46 @@ require 'log'
 require 'travis/lines_selector'
 require 'travis/log_folder'
 
-Log.DEBUG = false
+Log.DEBUG = true
 Log.LIMIT = 10000
 
 Travis.reopen
   LogView: Travis.View.extend
     templateName: 'jobs/log'
     logBinding: 'job.log'
-    contextBinding: 'job'
 
     didInsertElement: ->
+      @setupLog()
+
+    logDidChange: (->
+      @setupLog()
+    ).observes('log')
+
+    logWillChange: (->
+      @teardownLog()
+    ).observesBefore('log')
+
+    willDestroyElement: ->
+      @teardownLog()
+
+    teardownLog: ->
+      job = @get('job')
+      job.unsubscribe() if job
+
+    setupLog: ->
       job = @get('job')
       if job
         job.get('log').fetch()
         job.subscribe()
 
-    willDestroyElement: ->
-      job = @get('job')
-      job.unsubscribe() if job
-
   PreView: Em.View.extend
     templateName: 'jobs/pre'
 
+    logWillChange: (->
+      console.log 'log view: log will change' if Log.DEBUG
+      @teardownLog()
+    ).observesBefore('log')
+
     didInsertElement: ->
       console.log 'log view: did insert' if Log.DEBUG
       @_super.apply this, arguments
@@ -31,10 +49,7 @@ Travis.reopen
 
     willDestroyElement: ->
       console.log 'log view: will destroy' if Log.DEBUG
-      parts = @get('log.parts')
-      parts.removeArrayObserver(@, didChange: 'partsDidChange', willChange: 'noop')
-      parts.destroy()
-      @lineSelector?.willDestroy()
+      @teardownLog()
 
     versionDidChange: (->
       @rerender() if @get('_state') == 'inDOM'
@@ -42,17 +57,28 @@ Travis.reopen
 
     logDidChange: (->
       console.log 'log view: log did change: rerender' if Log.DEBUG
-      @rerender() if @get('_state') == 'inDOM'
+
+      if @get('log')
+        @createEngine()
+        @rerender() if @get('_state') == 'inDOM'
     ).observes('log')
 
+    teardownLog: ->
+      if @get('log')
+        parts = @get('log.parts')
+        parts.removeArrayObserver(@, didChange: 'partsDidChange', willChange: 'noop')
+        parts.destroy()
+        @lineSelector?.willDestroy()
+
     createEngine: ->
-      console.log 'log view: create engine' if Log.DEBUG
-      @scroll = new Log.Scroll beforeScroll: =>
-        @unfoldHighlight()
-      @engine = Log.create(limit: Log.LIMIT, listeners: [@scroll])
-      @logFolder = new Travis.LogFolder(@$().find('#log'))
-      @lineSelector = new Travis.LinesSelector(@$().find('#log'), @scroll, @logFolder)
-      @observeParts()
+      if @get('log')
+        console.log 'log view: create engine' if Log.DEBUG
+        @scroll = new Log.Scroll beforeScroll: =>
+          @unfoldHighlight()
+        @engine = Log.create(limit: Log.LIMIT, listeners: [@scroll])
+        @logFolder = new Travis.LogFolder(@$().find('#log'))
+        @lineSelector = new Travis.LinesSelector(@$().find('#log'), @scroll, @logFolder)
+        @observeParts()
 
     unfoldHighlight: ->
       @lineSelector.unfoldLines()