Remove ‘group’ parameter to addStyleSheet in favor of ‘priority’

src/package.coffee

@@ -109,7 +109,7 @@ class Package
 
   getType: -> 'atom'
 
-  getStylesheetType: -> 'bundled'
+  getStyleSheetPriority: -> 0
 
   load: ->
     @measure 'loadTime', =>
@@ -175,8 +175,9 @@ class Package
   activateStylesheets: ->
     return if @stylesheetsActivated
 
-    group = @getStylesheetType()
     @stylesheetDisposables = new CompositeDisposable
+
+    priority = @getStyleSheetPriority()
     for [sourcePath, source] in @stylesheets
       if match = path.basename(sourcePath).match(/[^.]*\.([^.]*)\./)
         context = match[1]
@@ -185,7 +186,7 @@ class Package
       else
         context = undefined
 
-      @stylesheetDisposables.add(atom.styles.addStyleSheet(source, {sourcePath, group, context}))
+      @stylesheetDisposables.add(atom.styles.addStyleSheet(source, {sourcePath, priority, context}))
     @stylesheetsActivated = true
 
   activateResources: ->

src/style-manager.coffee

@@ -92,12 +92,7 @@ class StyleManager
   addStyleSheet: (source, params) ->
     sourcePath = params?.sourcePath
     context = params?.context
-    group = params?.group
-    priority = params?.priority ?
-      switch group
-        when 'bundled' then 0
-        when 'theme' then 1
-        when 'user' then 2
+    priority = params?.priority
 
     if sourcePath? and styleElement = @styleElementsBySourcePath[sourcePath]
       updated = true
@@ -111,10 +106,6 @@ class StyleManager
         styleElement.context = context
         styleElement.setAttribute('context', context)
 
-      if group?
-        styleElement.group = group
-        styleElement.setAttribute('group', group)
-
       if priority?
         styleElement.priority = priority
         styleElement.setAttribute('priority', priority)
@@ -129,14 +120,7 @@ class StyleManager
     new Disposable => @removeStyleElement(styleElement)
 
   addStyleElement: (styleElement) ->
-    {sourcePath, group, priority} = styleElement
-
-    if group?
-      for existingElement, index in @styleElements
-        if existingElement.group is group
-          insertIndex = index + 1
-        else
-          break if insertIndex?
+    {sourcePath, priority} = styleElement
 
     if priority?
       for existingElement, index in @styleElements

src/styles-element.coffee

@@ -56,13 +56,6 @@ class StylesElement extends HTMLElement
     styleElementClone.priority = styleElement.priority
     @styleElementClonesByOriginalElement.set(styleElement, styleElementClone)
 
-    group = styleElement.getAttribute('group')
-    if group?
-      for child in @children
-        if child.getAttribute('group') is group and child.nextSibling?.getAttribute('group') isnt group
-          insertBefore = child.nextSibling
-          break
-
     priority = styleElement.priority
     if priority?
       for child in @children

src/theme-manager.coffee

@@ -219,28 +219,30 @@ class ThemeManager
   #
   # Returns a {Disposable} on which `.dispose()` can be called to remove the
   # required stylesheet.
-  requireStylesheet: (stylesheetPath, type='bundled') ->
+  requireStylesheet: (stylesheetPath) ->
     if fullPath = @resolveStylesheet(stylesheetPath)
       content = @loadStylesheet(fullPath)
-      @applyStylesheet(fullPath, content, type)
+      @applyStylesheet(fullPath, content)
     else
       throw new Error("Could not find a file at path '#{stylesheetPath}'")
 
   unwatchUserStylesheet: ->
     @userStylesheetFile?.off()
     @userStylesheetFile = null
-    @removeStylesheet(@userStylesheetPath) if @userStylesheetPath?
+    @userStyleSheetDisposable?.dispose()
+    @userStyleSheetDisposable = null
 
   loadUserStylesheet: ->
     @unwatchUserStylesheet()
+
     userStylesheetPath = atom.styles.getUserStyleSheetPath()
     return unless fs.isFileSync(userStylesheetPath)
 
-    @userStylesheetPath = userStylesheetPath
     @userStylesheetFile = new File(userStylesheetPath)
     @userStylesheetFile.on 'contents-changed moved removed', => @loadUserStylesheet()
     userStylesheetContents = @loadStylesheet(userStylesheetPath, true)
-    @applyStylesheet(userStylesheetPath, userStylesheetContents, 'user')
+
+    @userStyleSheetDisposable = atom.styles.addStyleSheet(userStylesheetContents, sourcePath: userStylesheetPath, priority: 2)
 
   loadBaseStylesheets: ->
     @requireStylesheet('../static/bootstrap')
@@ -291,8 +293,8 @@ class ThemeManager
   removeStylesheet: (stylesheetPath) ->
     @styleSheetDisposablesBySourcePath[stylesheetPath]?.dispose()
 
-  applyStylesheet: (path, text, type='bundled') ->
-    @styleSheetDisposablesBySourcePath[path] = atom.styles.addStyleSheet(text, sourcePath: path, group: type)
+  applyStylesheet: (path, text) ->
+    @styleSheetDisposablesBySourcePath[path] = atom.styles.addStyleSheet(text, sourcePath: path)
 
   stringToId: (string) ->
     string.replace(/\\/g, '/')

src/theme-package.coffee

@@ -5,7 +5,7 @@ module.exports =
 class ThemePackage extends Package
   getType: -> 'theme'
 
-  getStylesheetType: -> 'theme'
+  getStyleSheetPriority: -> 1
 
   enable: ->
     atom.config.unshiftAtKeyPath('core.themes', @name)