[added] autoFocus support to dropdown, calendar, and selectlist

src/Calendar.jsx

@@ -112,6 +112,7 @@ let Calendar = React.createClass({
 
   mixins: [
     require('./mixins/TimeoutMixin'),
+    require('./mixins/AutoFocusMixin'),
     require('./mixins/PureRenderMixin'),
     require('./mixins/RtlParentContextMixin'),
     require('./mixins/AriaDescendantMixin')(),

src/DateTimePicker.jsx

@@ -239,6 +239,7 @@ var DateTimePicker = React.createClass({
           id={id}
           tabIndex='-1'
           value={value}
+          autoFocus={false}
           onChange={this.handleDateSelect}
           // #75: need to aggressively reclaim focus from the calendar otherwise
           // disabled header/footer buttons will drop focus completely from the widget

src/DropdownList.jsx

@@ -44,14 +44,10 @@ var propTypes = {
   groupBy:        CustomPropTypes.accessor,
 
   onSelect:       React.PropTypes.func,
-
   searchTerm:     React.PropTypes.string,
   onSearch:       React.PropTypes.func,
-
   busy:           React.PropTypes.bool,
-
   delay:          React.PropTypes.number,
-
   dropUp:         React.PropTypes.bool,
   duration:       React.PropTypes.number, //popup
 
@@ -72,6 +68,7 @@ var DropdownList = React.createClass({
 
   mixins: [
     require('./mixins/TimeoutMixin'),
+    require('./mixins/AutoFocusMixin'),
     require('./mixins/PureRenderMixin'),
     require('./mixins/DataFilterMixin'),
     require('./mixins/PopupScrollToMixin'),

src/SelectList.jsx

@@ -69,6 +69,7 @@ var SelectList = React.createClass({
 
   mixins: [
     require('./mixins/TimeoutMixin'),
+    require('./mixins/AutoFocusMixin'),
     require('./mixins/RtlParentContextMixin'),
     require('./mixins/AriaDescendantMixin')(),
     require('./mixins/FocusMixin')({

src/mixins/AutoFocusMixin.js

@@ -0,0 +1,15 @@
+import React from 'react';
+import { findDOMNode } from 'react-dom';
+
+export default {
+  propTypes: {
+    autoFocus: React.PropTypes.bool
+  },
+
+  componentDidMount() {
+    let { autoFocus } = this.props;
+
+    if (autoFocus)
+      this.focus ? this.focus() : findDOMNode(this).focus()
+  }
+};

test/dropdown.browser.jsx

@@ -49,6 +49,14 @@ describe('DROPDOWNS', function(){
     expect(openSpy.calledWith(true)).to.be(true);
   })
 
+  it('should respect autoFocus', () => {
+    expect(
+      tsp(<ControlledDropdownList autoFocus />)
+        .render(true)
+        .dom()
+    ).to.equal(document.activeElement);
+  })
+
   it('should not open when clicked while disabled or readOnly', () => {
     let openSpy = sinon.spy();