Merge pull request #4211 from atom/ks-middle-paste-on-linux

Support middle mouse paste on Linux

spec/text-editor-component-spec.coffee

@@ -2684,6 +2684,24 @@ describe "TextEditorComponent", ->
         expect(line1LeafNodes[0].classList.contains('indent-guide')).toBe false
         expect(line1LeafNodes[1].classList.contains('indent-guide')).toBe false
 
+  describe "middle mouse paste on Linux", ->
+    it "pastes the previously selected text", ->
+      atom.clipboard.write('')
+      component.listenForMiddleMousePaste()
+
+      editor.setCursorBufferPosition([10, 0])
+      componentNode.querySelector('.scroll-view').dispatchEvent(buildMouseEvent('mouseup', which: 2))
+
+      expect(atom.clipboard.read()).toBe ''
+      expect(editor.lineTextForBufferRow(10)).toBe ''
+
+      editor.setSelectedBufferRange([[1, 6], [1, 10]])
+      editor.setCursorBufferPosition([10, 0])
+      componentNode.querySelector('.scroll-view').dispatchEvent(buildMouseEvent('mouseup', which: 2))
+
+      expect(atom.clipboard.read()).toBe 'sort'
+      expect(editor.lineTextForBufferRow(10)).toBe 'sort'
+
   buildMouseEvent = (type, properties...) ->
     properties = extend({bubbles: true, cancelable: true}, properties...)
     properties.detail ?= 1

src/text-editor-component.coffee

@@ -405,6 +405,7 @@ TextEditorComponent = React.createClass
     window.addEventListener 'resize', @requestHeightAndWidthMeasurement
 
     @listenForIMEEvents()
+    @listenForMiddleMousePaste() if process.platform is 'linux'
 
   listenForIMEEvents: ->
     node = @getDOMNode()
@@ -432,6 +433,19 @@ TextEditorComponent = React.createClass
       editor.insertText(selectedText, select: true, undo: 'skip')
       event.target.value = ''
 
+  listenForMiddleMousePaste: ->
+    clipboard = require 'clipboard'
+
+    @refs.scrollView.getDOMNode().addEventListener 'mouseup', ({which}) =>
+      return unless which is 2
+
+      if selection = clipboard.readText('selection')
+        @props.editor.insertText(selection)
+
+    @subscribe @props.editor.onDidChangeSelectionRange =>
+      if selectedText = @props.editor.getSelectedText()
+        clipboard.writeText(selectedText, 'selection')
+
   observeConfig: ->
     @subscribe atom.config.observe 'editor.useHardwareAcceleration', @setUseHardwareAcceleration
     @subscribe atom.config.onDidChange 'editor.fontSize', @sampleFontStyling