Add combobox date picker example(pull #1413)

Resolves #34 by adding a combobox example that opens a dialog containing a calendar grid.

Co-authored-by: Jon Gunderson <jongund@illinois.edu>
Co-authored-by: Carolyn MacLeod <Carolyn_MacLeod@ca.ibm.com>
Co-authored-by: Simon Pieters <zcorpan@gmail.com>

aria-practices.html

@@ -795,6 +795,7 @@ <h4>Examples</h4>
           <li><a href="examples/combobox/combobox-autocomplete-list.html">Editable Combobox with List Autocomplete</a>: An editable combobox that demonstrates the autocomplete behavior known as <q>list with manual selection</q>.</li>
           <li><a href="examples/combobox/combobox-autocomplete-none.html">Editable Combobox Without Autocomplete</a>: An editable combobox that demonstrates the behavior associated with <code>aria-autocomplete=none</code>.</li>
           <li><a href="examples/combobox/grid-combo.html">Editable Combobox with Grid Popup</a>: An editable combobox that presents suggestions in a grid, enabling users to navigate descriptive information about each suggestion.</li>
+          <li><a href="examples/combobox/combobox-datepicker.html">Date Picker Combobox</a>: An editable date input combobox that opens a dialog containing a calendar grid and buttons for navigating by month and year.</li>
         </ul>
       </section>
 

cspell.json

@@ -7,6 +7,7 @@
     ],
     "words": [
         "activedescendant",
+        "affordance",
         "ahederson",
         "alertdialog",
         "amet",
@@ -79,6 +80,7 @@
         "Garaventa",
         "Geppy",
         "gridcell",
+        "gridcells",
         "GUIs",
         "Gunderson",
         "haspopup",
@@ -136,6 +138,7 @@
         "Nemeth",
         "Nihonium",
         "nofollow",
+        "norotate",
         "Nurthen",
         "NVDA",
         "Obel",

examples/combobox/combobox-autocomplete-both.html

@@ -43,6 +43,7 @@ <h1>Editable Combobox With Both List and Inline Autocomplete Example</h1>
       <li><a href="combobox-autocomplete-list.html">Editable Combobox with List Autocomplete</a>: An editable combobox that demonstrates the autocomplete behavior known as <q>list with manual selection</q>.</li>
       <li><a href="combobox-autocomplete-none.html">Editable Combobox Without Autocomplete</a>: An editable combobox that demonstrates the behavior associated with <code>aria-autocomplete=none</code>.</li>
       <li><a href="grid-combo.html">Editable Combobox with Grid Popup</a>: An editable combobox that presents suggestions in a grid, enabling users to navigate descriptive information about each suggestion.</li>
+      <li><a href="combobox-datepicker.html">Date Picker Combobox</a>: An editable date input combobox that opens a dialog containing a calendar grid and buttons for navigating by month and year.</li>
     </ul>
     <section>
       <h2 id="ex_label">Example</h2>

examples/combobox/combobox-autocomplete-list.html

@@ -43,6 +43,7 @@ <h1>Editable Combobox With List Autocomplete Example</h1>
       <li><a href="combobox-autocomplete-both.html">Editable Combobox with Both List and Inline Autocomplete</a>: An editable combobox that demonstrates the autocomplete behavior known as <q>list with inline autocomplete</q>.</li>
       <li><a href="combobox-autocomplete-none.html">Editable Combobox Without Autocomplete</a>: An editable combobox that demonstrates the behavior associated with <code>aria-autocomplete=none</code>.</li>
       <li><a href="grid-combo.html">Editable Combobox with Grid Popup</a>: An editable combobox that presents suggestions in a grid, enabling users to navigate descriptive information about each suggestion.</li>
+      <li><a href="combobox-datepicker.html">Date Picker Combobox</a>: An editable date input combobox that opens a dialog containing a calendar grid and buttons for navigating by month and year.</li>
     </ul>
 
     <section>

examples/combobox/combobox-autocomplete-none.html

@@ -40,6 +40,7 @@ <h1>Editable Combobox without Autocomplete Example</h1>
       <li><a href="combobox-autocomplete-both.html">Editable Combobox with Both List and Inline Autocomplete</a>: An editable combobox that demonstrates the autocomplete behavior known as <q>list with inline autocomplete</q>.</li>
       <li><a href="combobox-autocomplete-list.html">Editable Combobox with List Autocomplete</a>: An editable combobox that demonstrates the autocomplete behavior known as <q>list with manual selection</q>.</li>
       <li><a href="grid-combo.html">Editable Combobox with Grid Popup</a>: An editable combobox that presents suggestions in a grid, enabling users to navigate descriptive information about each suggestion.</li>
+      <li><a href="combobox-datepicker.html">Date Picker Combobox</a>: An editable date input combobox that opens a dialog containing a calendar grid and buttons for navigating by month and year.</li>
     </ul>
 
     <section>