Initial implementation of item page (disabled)

src/scripts/models/item_page.coffee

@@ -0,0 +1,66 @@
+###
+Crafting Guide - item_page.coffee
+
+Copyright (c) 2015 by Redwood Labs
+All rights reserved.
+###
+
+BaseModel    = require './base_model'
+CraftingPlan = require './crafting_plan'
+Event        = require '../constants'
+
+########################################################################################################################
+
+module.exports = class ItemPage extends BaseModel
+
+    constructor: (attributes={}, options={})->
+        if not attributes.modPack? then throw new Error 'attributes.modPack is required'
+        attributes.item ?= null
+        super attributes, options
+
+        @_plan = new CraftingPlan modPack:@modPack
+        @on Event.change + ':item', => @_updateCraftingPlan()
+        @_updateCraftingPlan()
+
+        Object.defineProperties this,
+            craftingRawMaterials: {get:-> @_plan.need}
+            craftingSteps:        {get:-> @_plan.steps}
+            similarItems:         {get:=> @getSimilarItems()}
+
+    # Property Methods #############################################################################
+
+    findSimilarItems: ->
+        return null unless @item?.modVersion?
+
+        result = []
+        @item.modVersion.eachItemInGroup @item.group, (item)=>
+            return if item is @item
+            result.push item
+
+        return null unless result.length > 0
+        return result
+
+    findComponentInItems: ->
+        return null unless @item?
+
+        itemSlug = @item.slug
+        result = {}
+        @modPack.eachMod (mod)->
+            mod.eachItem (item)->
+                item.eachRecipe (recipe)->
+                    for stack in recipe.input
+                        if stack.slug is itemSlug
+                            result[item.slug] = item
+
+        result = _.values(result).sort (a, b)-> a.compareTo b
+        return null unless result.length > 0
+        return result
+
+    # Private Methods ##############################################################################
+
+    _updateCraftingPlan: ->
+        @_plan.clear()
+
+        if @item?
+            @_plan.want.add @item.slug
+            @_plan.craft()

src/scripts/models/mod_pack.coffee

@@ -45,6 +45,8 @@ module.exports = class ModPack extends BaseModel
         return null
 
     findItemDisplay: (slug)->
+        if not slug? then return null
+
         result = {}
         item = @findItem slug, includeDisabled:true
         if item?

src/scripts/models/mod_version.coffee

@@ -39,6 +39,12 @@ module.exports = class ModVersion extends BaseModel
         @registerSlug item.slug, item.name
         return this
 
+    allItemsInGroup: (group)->
+        result = []
+        @eachItemInGroup group, (item)-> result.push item
+        return null if result.length is 0
+        return result
+
     compareTo: (that)->
         if this.mod? and that.mod?
             return this.mod.compareTo that.mod