Added item editor level preview window.

app/models/Level.coffee

@@ -80,7 +80,7 @@ module.exports = class Level extends CocoModel
       visit = (c) ->
         return if c in sorted
         lc = _.find levelComponents, {original: c.original}
-        console.error thang.id, 'couldn\'t find lc for', c, 'of', levelComponents unless lc
+        console.error thang.id or thang.name, 'couldn\'t find lc for', c, 'of', levelComponents unless lc
         return unless lc
         if lc.name is 'Programmable'
           # Programmable always comes last
@@ -88,7 +88,7 @@ module.exports = class Level extends CocoModel
         else
           for d in lc.dependencies or []
             c2 = _.find thang.components, {original: d.original}
-            console.error thang.id, 'couldn\'t find dependent Component', d.original, 'from', lc.name unless c2
+            console.error thang.id or thang.name, 'couldn\'t find dependent Component', d.original, 'from', lc.name unless c2
             visit c2 if c2
           if lc.name is 'Collides'
             allied = _.find levelComponents, {name: 'Allied'}

app/styles/editor/thang/home.sass

@@ -6,4 +6,4 @@
     width: 30px
     
   td
-    vertical-align: middle
+    vertical-align: middle

app/styles/editor/thang/thang-type-edit-view.sass

@@ -77,6 +77,8 @@
       background-color: white
       border-radius: 4px
 
+  .play-with-level-input
+    margin: 5px
   
 
 #spritesheets

app/templates/editor/thang/thang-type-edit-view.jade

@@ -33,6 +33,16 @@ block header
         span.navbar-brand #{thangType.attributes.name}
 
       ul.nav.navbar-nav.navbar-right
+        li.dropdown
+          a(data-toggle='dropdown').play-with-level-parent
+            span.glyphicon-play.glyphicon
+          ul.dropdown-menu
+            li.dropdown-header Play Which Level?
+            li
+              for level in recentlyPlayedLevels
+                a.play-with-level-button(data-level=level)= level
+              input.play-with-level-input(placeholder="Type in a level name")
+      
         if authorized
           li#save-button
             a

app/views/editor/thang/ThangTypeEditView.coffee

@@ -12,6 +12,7 @@ ThangTypeColorsTabView = require './ThangTypeColorsTabView'
 PatchesView = require 'views/editor/PatchesView'
 SaveVersionModal = require 'views/modal/SaveVersionModal'
 template = require 'templates/editor/thang/thang-type-edit-view'
+storage = require 'lib/storage'
 
 CENTER = {x: 200, y: 300}
 
@@ -37,6 +38,9 @@ module.exports = class ThangTypeEditView extends RootView
     'click #history-button': 'showVersionHistory'
     'click #save-button': 'openSaveModal'
     'click #patches-tab': -> @patchesView.load()
+    'click .play-with-level-button': 'onPlayLevel'
+    'click .play-with-level-parent': 'onPlayLevelSelect'
+    'keyup .play-with-level-input': 'onPlayLevelKeyUp'
 
   subscriptions:
     'save-new-version': 'saveNewThangType'
@@ -58,6 +62,7 @@ module.exports = class ThangTypeEditView extends RootView
     context.thangType = @thangType
     context.animations = @getAnimationNames()
     context.authorized = not me.get('anonymous')
+    context.recentlyPlayedLevels = storage.load('recently-played-levels') ? ['items']
     context
 
   getAnimationNames: ->
@@ -408,6 +413,39 @@ module.exports = class ThangTypeEditView extends RootView
   openSaveModal: ->
     @openModalView(new SaveVersionModal({model: @thangType}))
 
+  onPlayLevelSelect: (e) ->
+    if @childWindow and not @childWindow.closed
+      # We already have a child window open, so we don't need to ask for a level; we'll use its existing level.
+      e.stopImmediatePropagation()
+      @onPlayLevel e
+    _.defer -> $('.play-with-level-input').focus()
+
+  onPlayLevelKeyUp: (e) ->
+    return unless e.keyCode is 13  # return
+    input = @$el.find('.play-with-level-input')
+    input.parents('.dropdown').find('.play-with-level-parent').dropdown('toggle')
+    level = _.string.slugify input.val()
+    return unless level
+    @onPlayLevel null, level
+    recentlyPlayedLevels = storage.load('recently-played-levels') ? []
+    recentlyPlayedLevels.push level
+    storage.save 'recently-played-levels', recentlyPlayedLevels
+
+  onPlayLevel: (e, level=null) ->
+    level ?= $(e.target).data('level')
+    level = _.string.slugify level
+    if @childWindow and not @childWindow.closed
+      # Reset the LevelView's world, but leave the rest of the state alone
+      @childWindow.Backbone.Mediator.publish 'level-reload-thang-type', thangType: @thangType
+    else
+      # Create a new Window with a blank LevelView
+      scratchLevelID = level + '?dev=true'
+      if me.get('name') is 'Nick'
+        @childWindow = window.open("/play/level/#{scratchLevelID}", 'child_window', 'width=2560,height=1080,left=0,top=-1600,location=1,menubar=1,scrollbars=1,status=0,titlebar=1,toolbar=1', true)
+      else
+        @childWindow = window.open("/play/level/#{scratchLevelID}", 'child_window', 'width=1024,height=560,left=10,top=10,location=0,menubar=0,scrollbars=0,status=0,titlebar=0,toolbar=0', true)
+    @childWindow.focus()
+
   destroy: ->
     @camera?.destroy()
     super()

app/views/play/level/PlayLevelView.coffee

@@ -55,6 +55,7 @@ module.exports = class PlayLevelView extends RootView
     'god:new-world-created': 'onNewWorld'
     'god:infinite-loop': 'onInfiniteLoop'
     'level-reload-from-data': 'onLevelReloadFromData'
+    'level-reload-thang-type': 'onLevelReloadThangType'
     'play-next-level': 'onPlayNextLevel'
     'edit-wizard-settings': 'showWizardSettingsModal'
     'surface:world-set-up': 'onSurfaceSetUpNewWorld'
@@ -321,11 +322,20 @@ module.exports = class PlayLevelView extends RootView
 
   onLevelReloadFromData: (e) ->
     isReload = Boolean @world
-    @setLevel e.level, e.supermodel
+    @setLevel @level, e.supermodel
     if isReload
       @scriptManager.setScripts(e.level.get('scripts'))
       Backbone.Mediator.publish 'tome:cast-spell'  # a bit hacky
 
+  onLevelReloadThangType: (e) ->
+    tt = e.thangType
+    for url, model of @supermodel.models
+      if model.id is tt.id
+        for key, val of tt.attributes
+          model.attributes[key] = val
+        break
+    Backbone.Mediator.publish 'tome:cast-spell'
+
   onWindowResize: (s...) ->
     $('#pointer').css('opacity', 0.0)