Add plain text SDT type

Author: morrisdj

src/PhpWord/Element/SDT.php

@@ -90,7 +90,7 @@ public function getType()
      */
     public function setType($value)
     {
-        $enum = array('comboBox', 'dropDownList', 'date');
+        $enum = array('plainText', 'comboBox', 'dropDownList', 'date');
         $this->type = $this->setEnumVal($value, $enum, 'comboBox');
 
         return $this;

src/PhpWord/Writer/Word2007/Element/SDT.php

@@ -73,6 +73,18 @@ public function write()
         $this->endElementP(); // w:p
     }
 
+    /**
+     * Write text.
+     *
+     * @see  http://www.datypic.com/sc/ooxml/t-w_CT_SdtText.html
+     * @param \PhpOffice\Common\XMLWriter $xmlWriter
+     * @param \PhpOffice\PhpWord\Element\SDT $element
+     */
+    private function writePlainText(XMLWriter $xmlWriter, SDTElement $element)
+    {
+        $xmlWriter->startElement("w:text");
+        $xmlWriter->endElement(); // w:{$type}
+    }
     /**
      * Write combo box.
      *

tests/PhpWord/Element/SDTTest.php

@@ -29,8 +29,8 @@ class SDTTest extends \PHPUnit\Framework\TestCase
      */
     public function testConstruct()
     {
-        $types = array('comboBox', 'dropDownList', 'date');
-        $type = $types[rand(0, 2)];
+        $types = array('plainText', 'comboBox', 'dropDownList', 'date');
+        $type = $types[rand(0, 3)];
         $value = rand(0, 100);
         $alias = 'alias';
         $tag = 'my_tag';