add selected Board to settings and solve component rerender

src/components/Blockly/BlocklyWindow.js

@@ -43,8 +43,16 @@ class BlocklyWindow extends Component {
 
   componentDidUpdate(props) {
     const workspace = Blockly.getMainWorkspace();
-
     var xml = this.props.initialXml;
+    if (props.selectedBoard !== this.props.selectedBoard) {
+      // change board
+      if(!xml) xml = initialXml;
+      var xmlDom = Blockly.Xml.textToDom(xml);
+      Blockly.Xml.clearWorkspaceAndLoadFromXml(xmlDom, workspace);
+      // var toolbox = workspace.getToolbox();
+      // workspace.updateToolbox(toolbox.toolboxDef_);
+    }
+ 
     // if svg is true, then the update process is done in the BlocklySvg component
     if (props.initialXml !== xml && !this.props.svg) {
       // guarantees that the current xml-code (this.props.initialXml) is rendered
@@ -55,7 +63,7 @@ class BlocklyWindow extends Component {
     if (props.language !== this.props.language) {
       // change language
       if (!xml) xml = initialXml;
-      var xmlDom = Blockly.Xml.textToDom(xml);
+       xmlDom = Blockly.Xml.textToDom(xml);
       Blockly.Xml.clearWorkspaceAndLoadFromXml(xmlDom, workspace);
       // var toolbox = workspace.getToolbox();
       // workspace.updateToolbox(toolbox.toolboxDef_);
@@ -130,12 +138,14 @@ BlocklyWindow.propTypes = {
   renderer: PropTypes.string.isRequired,
   sounds: PropTypes.bool.isRequired,
   language: PropTypes.string.isRequired,
+  selectedBoard: PropTypes.string.isRequired,
 };
 
 const mapStateToProps = (state) => ({
   renderer: state.general.renderer,
   sounds: state.general.sounds,
   language: state.general.language,
+  selectedBoard: state.board.board,
 });
 
 export default connect(mapStateToProps, { onChangeWorkspace, clearStats })(