Support using custom guide columns via config

src/packages/wrap-guide/spec/wrap-guide-spec.coffee

@@ -38,39 +38,23 @@ describe "WrapGuide", ->
       expect(wrapGuide.position().left).toBeGreaterThan(initial)
       expect(wrapGuide).toBeVisible()
 
-  describe "overriding getGuideColumn", ->
-    it "invokes the callback with the editor path", ->
-      editorPath = null
-      wrapGuide.getGuideColumn = (path) ->
-        editorPath = path
-        80
+  describe "using a custom config column", ->
+    it "places the wrap guide at the custom column", ->
+      config.set('wrapGuide.columns', [{pattern: '\.js$', column: 20}])
       wrapGuide.updateGuide()
-      expect(editorPath).toBe(require.resolve('fixtures/sample.js'))
-
-    it "invokes the callback with a default value", ->
-      column = null
-      wrapGuide.getGuideColumn = (path, defaultColumn) ->
-        editorPath = path
-        column = defaultColumn
-        defaultColumn
+      width = editor.charWidth * 20
+      expect(width).toBeGreaterThan(0)
+      expect(wrapGuide.position().left).toBe(width)
 
+    it "uses the default column when no custom column matches the path", ->
+      config.set('wrapGuide.columns', [{pattern: '\.jsp$', column: '100'}])
       wrapGuide.updateGuide()
-      expect(column).toBeGreaterThan(0)
+      width = editor.charWidth * wrapGuide.defaultColumn
+      expect(width).toBeGreaterThan(0)
+      expect(wrapGuide.position().left).toBe(width)
 
-    # this is disabled because we no longer support passing config to an extension
-    # at load time. we need to convert it to use the global config vars.
-    xit "uses the function from the config data", ->
-      rootView.find('.wrap-guide').remove()
-      config =
-        getGuideColumn: ->
-          1
-      atom.loadPackage('wrap-guide', config)
-      wrapGuide = rootView.find('.wrap-guide').view()
-      expect(wrapGuide.getGuideColumn).toBe(config.getGuideColumn)
-
-    it "hides the guide when the column is less than 1", ->
-      wrapGuide.getGuideColumn = (path) ->
-        -1
+    it "hides the guide when the config column is less than 1", ->
+      config.set('wrapGuide.columns', [{pattern: 'sample\.js$', column: -1}])
       wrapGuide.updateGuide()
       expect(wrapGuide).toBeHidden()
 

src/packages/wrap-guide/src/wrap-guide.coffee

@@ -1,21 +1,22 @@
 {View} = require 'space-pen'
 $ = require 'jquery'
+_ = require 'underscore'
 
 module.exports =
 class WrapGuide extends View
-  @activate: (rootView, state, config) ->
+  @activate: (rootView, state) ->
     requireStylesheet 'wrap-guide.css'
 
     for editor in rootView.getEditors()
       if rootView.parents('html').length
-        @appendToEditorPane(rootView, editor, config)
+        @appendToEditorPane(rootView, editor)
 
     rootView.on 'editor-open', (e, editor) =>
-      @appendToEditorPane(rootView, editor, config)
+      @appendToEditorPane(rootView, editor)
 
   @appendToEditorPane: (rootView, editor, config) ->
     if underlayer = editor.pane()?.find('.underlayer')
-      underlayer.append(new WrapGuide(rootView, editor, config))
+      underlayer.append(new WrapGuide(rootView, editor))
 
   @content: ->
     @div class: 'wrap-guide'
@@ -23,17 +24,22 @@ class WrapGuide extends View
   getGuideColumn: null
   defaultColumn: 80
 
-  initialize: (@rootView, @editor, options = {}) =>
-    if typeof options.getGuideColumn is 'function'
-      @getGuideColumn = options.getGuideColumn
-    else
-      @getGuideColumn = (path, defaultColumn) -> defaultColumn
-
+  initialize: (@rootView, @editor) =>
     @observeConfig 'editor.fontSize', => @updateGuide()
     @subscribe @editor, 'editor-path-change', => @updateGuide()
     @subscribe @editor, 'editor:min-width-changed', => @updateGuide()
     @subscribe $(window), 'resize', => @updateGuide()
 
+  getGuideColumn: (path) ->
+    customColumns = config.get('wrapGuide.columns')
+    return @defaultColumn unless _.isArray(customColumns)
+    for customColumn in customColumns
+      continue unless _.isObject(customColumn)
+      regex = customColumn['pattern']
+      continue unless regex
+      return parseInt(customColumn['column']) if new RegExp(regex).test(path)
+    @defaultColumn
+
   updateGuide: ->
     column = @getGuideColumn(@editor.getPath(), @defaultColumn)
     if column > 0