add callback prop for onModalLabelOk

src/Button/DigitizeButton/DigitizeButton.jsx

@@ -401,7 +401,13 @@ class DigitizeButton extends React.Component {
      *
      * @type {Function} onToggle
      */
-    onToggle: PropTypes.func
+    onToggle: PropTypes.func,
+
+    /**
+     * Callback function that will be called
+     * when the ok-button of the modal was clicked
+     */
+    onModalLabelOk: PropTypes.func
   };
 
   /**
@@ -934,10 +940,21 @@ class DigitizeButton extends React.Component {
    * Turns visibility of modal off and call `setTextOnFeature` method.
    */
   onModalLabelOk = () => {
+    const {
+      textLabel
+    } = this.state;
+
+    const {
+      onModalLabelOk
+    } = this.props;
+
     this.setState({
       showLabelPrompt: false
     }, () => {
       this.setTextOnFeature(this._digitizeTextFeature);
+      if (onModalLabelOk) {
+        onModalLabelOk(this._digitizeTextFeature, textLabel);
+      }
     });
   }
 
@@ -1042,6 +1059,7 @@ class DigitizeButton extends React.Component {
       modifyInteractionConfig,
       translateInteractionConfig,
       onToggle,
+      onModalLabelOk,
       ...passThroughProps
     } = this.props;