Activate panes on any click, not just left click

lib/tab-bar-view.coffee

@@ -422,15 +422,15 @@ class TabBarView
       @pane.activatePreviousItem()
 
   onMouseDown: (event) ->
+    @pane.activate() unless @pane.isDestroyed()
+
     tab = @tabForElement(event.target)
     return unless tab
 
-    if event.which is 3 or (event.which is 1 and event.ctrlKey is true)
-      @rightClickedTab?.element.classList.remove('right-clicked')
+    if event.button is 2 or (event.button is 0 and event.ctrlKey is true)
       @rightClickedTab = tab
-      @rightClickedTab.element.classList.add('right-clicked')
       event.preventDefault()
-    else if event.which is 2
+    else if event.button is 1
       # This prevents Chromium from activating "scroll mode" when
       # middle-clicking while some tabs are off-screen.
       event.preventDefault()
@@ -440,14 +440,13 @@ class TabBarView
     return unless tab
 
     event.preventDefault()
-    if event.which is 3 or (event.which is 1 and event.ctrlKey is true)
+    if event.button is 2 or (event.button is 0 and event.ctrlKey is true)
       # Bail out early when receiving this event, because we have already
       # handled it in the mousedown handler.
       return
-    else if event.which is 1 and not event.target.classList.contains('close-icon')
+    else if event.button is 0 and not event.target.classList.contains('close-icon')
       @pane.activateItem(tab.item)
-      @pane.activate() unless @pane.isDestroyed()
-    else if event.which is 2
+    else if event.button is 1
       @pane.destroyItem(tab.item)
 
   onDoubleClick: (event) ->

spec/event-helpers.coffee

@@ -0,0 +1,53 @@
+buildMouseEvent = (type, target, {button, ctrlKey}={}) ->
+  event = new MouseEvent(type, {bubbles: true, cancelable: true})
+  Object.defineProperty(event, 'button', get: -> button) if button?
+  Object.defineProperty(event, 'ctrlKey', get: -> ctrlKey) if ctrlKey?
+  Object.defineProperty(event, 'target', get: -> target)
+  Object.defineProperty(event, 'srcObject', get: -> target)
+  spyOn(event, "preventDefault")
+  event
+
+module.exports.triggerMouseEvent = (type, target, {which, ctrlKey}={}) ->
+  event = buildMouseEvent(arguments...)
+  target.dispatchEvent(event)
+  event
+
+module.exports.triggerClickEvent = (target, options) ->
+  events = {
+    mousedown: buildMouseEvent('mousedown', target, options),
+    mouseup: buildMouseEvent('mouseup', target, options),
+    click: buildMouseEvent('click', target, options)
+  }
+
+  target.dispatchEvent(events.mousedown)
+  target.dispatchEvent(events.mouseup)
+  target.dispatchEvent(events.click)
+
+  events
+
+module.exports.buildDragEvents = (dragged, dropTarget) ->
+  dataTransfer =
+    data: {}
+    setData: (key, value) -> @data[key] = "#{value}" # Drag events stringify data values
+    getData: (key) -> @data[key]
+
+  Object.defineProperty(
+    dataTransfer,
+    'items',
+    get: ->
+      Object.keys(dataTransfer.data).map((key) -> {type: key})
+  )
+
+  dragStartEvent = buildMouseEvent("dragstart", dragged)
+  Object.defineProperty(dragStartEvent, 'dataTransfer', get: -> dataTransfer)
+
+  dropEvent = buildMouseEvent("drop", dropTarget)
+  Object.defineProperty(dropEvent, 'dataTransfer', get: -> dataTransfer)
+
+  [dragStartEvent, dropEvent]
+
+module.exports.buildWheelEvent = (delta) ->
+  new WheelEvent("mousewheel", wheelDeltaY: delta)
+
+module.exports.buildWheelPlusShiftEvent = (delta) ->
+  new WheelEvent("mousewheel", wheelDeltaY: delta, shiftKey: true)

spec/tabs-spec.coffee

@@ -4,7 +4,8 @@ temp = require 'temp'
 TabBarView = require '../lib/tab-bar-view'
 layout = require '../lib/layout'
 main = require '../lib/main'
-{triggerMouseEvent, triggerClickEvent, buildDragEvents, buildDragEnterLeaveEvents, buildWheelEvent, buildWheelPlusShiftEvent} = require "./event-helpers"
+{triggerMouseEvent, triggerClickEvent, buildDragEvents, buildDragEnterLeaveEvents, buildWheelEvent, buildWheelPlusShiftEvent} = require "./event-helpers.coffee"
+{buildDragEnterLeaveEvents} = require "./event-helpers"
 
 describe "Tabs package main", ->
   centerElement = null
@@ -258,26 +259,23 @@ describe "TabBarView", ->
 
   describe "when a tab is clicked", ->
     it "shows the associated item on the pane and focuses the pane", ->
-      jasmine.attachToDOM(tabBar.element) # Remove after Atom 1.2.0 is released
       spyOn(pane, 'activate')
 
-      {mousedown, click} = triggerClickEvent(tabBar.tabAtIndex(0).element, which: 1)
+      {mousedown, click} = triggerClickEvent(tabBar.tabAtIndex(0).element, button: 0)
       expect(pane.getActiveItem()).toBe(pane.getItems()[0])
       # allows dragging
       expect(mousedown.preventDefault).not.toHaveBeenCalled()
       expect(click.preventDefault).toHaveBeenCalled()
 
-      {mousedown, click} = triggerClickEvent(tabBar.tabAtIndex(2).element, which: 1)
+      {mousedown, click} = triggerClickEvent(tabBar.tabAtIndex(2).element, button: 0)
       expect(pane.getActiveItem()).toBe(pane.getItems()[2])
       # allows dragging
       expect(mousedown.preventDefault).not.toHaveBeenCalled()
       expect(click.preventDefault).toHaveBeenCalled()
       expect(pane.activate.callCount).toBe 2
 
     it "closes the tab when middle clicked", ->
-      jasmine.attachToDOM(tabBar.element) # Remove after Atom 1.2.0 is released
-
-      {click} = triggerClickEvent(tabBar.tabForItem(editor1).element, which: 2)
+      {click} = triggerClickEvent(tabBar.tabForItem(editor1).element, button: 1)
 
       expect(pane.getItems().length).toBe 2
       expect(pane.getItems().indexOf(editor1)).toBe -1
@@ -288,24 +286,22 @@ describe "TabBarView", ->
       expect(click.preventDefault).toHaveBeenCalled()
 
     it "doesn't switch tab when right (or ctrl-left) clicked", ->
-      jasmine.attachToDOM(tabBar.element) # Remove after Atom 1.2.0 is released
-
       spyOn(pane, 'activate')
 
-      {mousedown} = triggerClickEvent(tabBar.tabAtIndex(0).element, which: 3)
+      {mousedown} = triggerClickEvent(tabBar.tabAtIndex(0).element, button: 2)
       expect(pane.getActiveItem()).not.toBe pane.getItems()[0]
       expect(mousedown.preventDefault).toHaveBeenCalled()
 
-      {mousedown} = triggerClickEvent(tabBar.tabAtIndex(0).element, which: 1, ctrlKey: true)
+      {mousedown} = triggerClickEvent(tabBar.tabAtIndex(0).element, button: 0, ctrlKey: true)
       expect(pane.getActiveItem()).not.toBe pane.getItems()[0]
       expect(mousedown.preventDefault).toHaveBeenCalled()
 
-      expect(pane.activate).not.toHaveBeenCalled()
+      # We don't switch tabs, but the pane should still be activated
+      # because of the mouse click
+      expect(pane.activate).toHaveBeenCalled()
 
   describe "when a tab's close icon is clicked", ->
     it "destroys the tab's item on the pane", ->
-      jasmine.attachToDOM(tabBar.element) # Remove after Atom 1.2.0 is released
-
       tabBar.tabForItem(editor1).element.querySelector('.close-icon').click()
       expect(pane.getItems().length).toBe 2
       expect(pane.getItems().indexOf(editor1)).toBe -1
@@ -543,7 +539,7 @@ describe "TabBarView", ->
 
     describe "when tabs:close-tab is fired", ->
       it "closes the active tab", ->
-        triggerClickEvent(tabBar.tabForItem(item2).element, which: 3)
+        triggerClickEvent(tabBar.tabForItem(item2).element, button: 2)
         atom.commands.dispatch(tabBar.element, 'tabs:close-tab')
         expect(pane.getItems().length).toBe 2
         expect(pane.getItems().indexOf(item2)).toBe -1
@@ -552,7 +548,7 @@ describe "TabBarView", ->
 
     describe "when tabs:close-other-tabs is fired", ->
       it "closes all other tabs except the active tab", ->
-        triggerClickEvent(tabBar.tabForItem(item2).element, which: 3)
+        triggerClickEvent(tabBar.tabForItem(item2).element, button: 2)
         atom.commands.dispatch(tabBar.element, 'tabs:close-other-tabs')
         expect(pane.getItems().length).toBe 1
         expect(tabBar.getTabs().length).toBe 1
@@ -562,7 +558,7 @@ describe "TabBarView", ->
     describe "when tabs:close-tabs-to-right is fired", ->
       it "closes only the tabs to the right of the active tab", ->
         pane.activateItem(editor1)
-        triggerClickEvent(tabBar.tabForItem(editor1).element, which: 3)
+        triggerClickEvent(tabBar.tabForItem(editor1).element, button: 2)
         atom.commands.dispatch(tabBar.element, 'tabs:close-tabs-to-right')
         expect(pane.getItems().length).toBe 2
         expect(tabBar.getTabs().length).toBe 2
@@ -572,7 +568,7 @@ describe "TabBarView", ->
     describe "when tabs:close-tabs-to-left is fired", ->
       it "closes only the tabs to the left of the active tab", ->
         pane.activateItem(editor1)
-        triggerClickEvent(tabBar.tabForItem(editor1).element, which: 3)
+        triggerClickEvent(tabBar.tabForItem(editor1).element, button: 2)
         atom.commands.dispatch(tabBar.element, 'tabs:close-tabs-to-left')
         expect(pane.getItems().length).toBe 2
         expect(tabBar.getTabs().length).toBe 2
@@ -594,7 +590,7 @@ describe "TabBarView", ->
 
     describe "when tabs:split-up is fired", ->
       it "splits the selected tab up", ->
-        triggerClickEvent(tabBar.tabForItem(item2).element, which: 3)
+        triggerClickEvent(tabBar.tabForItem(item2).element, button: 2)
         expect(atom.workspace.getCenter().getPanes().length).toBe 1
 
         atom.commands.dispatch(tabBar.element, 'tabs:split-up')
@@ -604,7 +600,7 @@ describe "TabBarView", ->
 
     describe "when tabs:split-down is fired", ->
       it "splits the selected tab down", ->
-        triggerClickEvent(tabBar.tabForItem(item2).element, which: 3)
+        triggerClickEvent(tabBar.tabForItem(item2).element, button: 2)
         expect(atom.workspace.getCenter().getPanes().length).toBe 1
 
         atom.commands.dispatch(tabBar.element, 'tabs:split-down')
@@ -614,7 +610,7 @@ describe "TabBarView", ->
 
     describe "when tabs:split-left is fired", ->
       it "splits the selected tab to the left", ->
-        triggerClickEvent(tabBar.tabForItem(item2).element, which: 3)
+        triggerClickEvent(tabBar.tabForItem(item2).element, button: 2)
         expect(atom.workspace.getCenter().getPanes().length).toBe 1
 
         atom.commands.dispatch(tabBar.element, 'tabs:split-left')
@@ -624,7 +620,7 @@ describe "TabBarView", ->
 
     describe "when tabs:split-right is fired", ->
       it "splits the selected tab to the right", ->
-        triggerClickEvent(tabBar.tabForItem(item2).element, which: 3)
+        triggerClickEvent(tabBar.tabForItem(item2).element, button: 2)
         expect(atom.workspace.getCenter().getPanes().length).toBe 1
 
         atom.commands.dispatch(tabBar.element, 'tabs:split-right')
@@ -635,7 +631,7 @@ describe "TabBarView", ->
     describe "when tabs:open-in-new-window is fired", ->
       describe "by right-clicking on a tab", ->
         beforeEach ->
-          triggerClickEvent(tabBar.tabForItem(item1).element, which: 3)
+          triggerClickEvent(tabBar.tabForItem(item1).element, button: 2)
           expect(atom.workspace.getCenter().getPanes().length).toBe 1
           spyOn(atom, 'open')
 
@@ -1384,7 +1380,7 @@ describe "TabBarView", ->
           runs ->
             pane.activateItem(editor2)
             expect(tabBar.tabForItem(editor2).element.querySelector('.title')).toHaveClass 'temp'
-            triggerMouseEvent('dblclick', tabBar.tabForItem(editor2).element, which: 1)
+            triggerMouseEvent('dblclick', tabBar.tabForItem(editor2).element, button: 0)
             expect(tabBar.tabForItem(editor2).element.querySelector('.title')).not.toHaveClass 'temp'
 
       describe "when editing a file in pending state", ->