Merge pull request #2996 from thomasjo/editorview-grammarscopes

Add grammar scope to EditorView

spec/editor-view-spec.coffee

@@ -3045,3 +3045,12 @@ describe "EditorView", ->
       editorView.pixelPositionForScreenPosition([0, editor.getTabLength()])
       editorView.pixelPositionForScreenPosition([0, editor.getTabLength() + 1])
       expect(editorView.measureToColumn.callCount).toBe 0
+
+  describe "grammar data attributes", ->
+    it "adds and updates the grammar data attribute based on the current grammar", ->
+      editorView.attachToDom()
+      editor.setGrammar(atom.syntax.grammarForScopeName('text.plain'))
+      expect(editorView.attr('data-grammar')).toBe 'text plain'
+
+      editor.setGrammar(atom.syntax.grammarForScopeName('source.js'))
+      expect(editorView.attr('data-grammar')).toBe 'source js'

src/editor-view.coffee

@@ -560,6 +560,7 @@ class EditorView extends View
       @trigger 'editor:path-changed'
 
     @subscribe @editor, "grammar-changed", =>
+      @addGrammarScopeAttribute()
       @trigger 'editor:grammar-changed'
 
     @subscribe @editor, 'selection-added', (selection) =>
@@ -581,10 +582,15 @@ class EditorView extends View
 
     @trigger 'editor:path-changed'
     @resetDisplay()
+    @addGrammarScopeAttribute()
 
     if @attached and @editor.buffer.isInConflict()
       _.defer => @showBufferConflictAlert(@editor) # Display after editor has a chance to display
 
+  addGrammarScopeAttribute: ->
+    grammarScope = @editor.getGrammar()?.scopeName?.replace(/\./g, ' ')
+    @attr('data-grammar', grammarScope)
+
   getModel: ->
     @editor
 

src/react-editor-view.coffee

@@ -81,8 +81,17 @@ class ReactEditorView extends View
     @attached = true
     @component.pollDOM()
     @focus() if @focusOnAttach
+
+    @addGrammarScopeAttribute()
+    @subscribe @editor, 'grammar-changed', =>
+      @addGrammarScopeAttribute()
+
     @trigger 'editor:attached', [this]
 
+  addGrammarScopeAttribute: ->
+    grammarScope = @editor.getGrammar()?.scopeName?.replace(/\./g, ' ')
+    @attr('data-grammar', grammarScope)
+
   scrollTop: (scrollTop) ->
     if scrollTop?
       @editor.setScrollTop(scrollTop)