fix indent and put submit on enter

templates/demo/app/components/blockchain.js

@@ -15,18 +15,26 @@ class Blockchain extends React.Component {
     }
   }
 
-    handleChange(e){
+  handleChange(e) {
-      this.setState({valueSet: e.target.value});
+    this.setState({ valueSet: e.target.value });
   }
 
-    setValue(e){
+  checkEnter(e, func) {
+    if (e.key !== 'Enter') {
+      return;
+    }
+    e.preventDefault();
+    func.apply(this, [e]);
+  }
+
+  setValue(e) {
     e.preventDefault();
 
     var value = parseInt(this.state.valueSet, 10);
 
     // If web3.js 1.0 is being used
     if (EmbarkJS.isNewWeb3()) {
-        SimpleStorage.methods.set(value).send({from: web3.eth.defaultAccount});
+      SimpleStorage.methods.set(value).send({ from: web3.eth.defaultAccount });
       this._addToLog("SimpleStorage.methods.set(value).send({from: web3.eth.defaultAccount})");
     } else {
       SimpleStorage.set(value);
@@ -34,36 +42,37 @@ class Blockchain extends React.Component {
     }
   }
 
-    getValue(e){
+  getValue(e) {
     e.preventDefault();
 
     if (EmbarkJS.isNewWeb3()) {
       SimpleStorage.methods.get().call()
-          .then(_value => this.setState({valueGet: _value}))
+        .then(_value => this.setState({ valueGet: _value }))
       this._addToLog("SimpleStorage.methods.get(console.log)");
     } else {
       SimpleStorage.get()
-          .then(_value => this.setState({valueGet: _value}));
+        .then(_value => this.setState({ valueGet: _value }));
       this._addToLog("SimpleStorage.get()");
     }
   }
 
-    _addToLog(txt){
+  _addToLog(txt) {
     this.state.logs.push(txt);
-      this.setState({logs: this.state.logs});
+    this.setState({ logs: this.state.logs });
   }
 
-    render(){
+  render() {
     return (<React.Fragment>
         <h3> 1. Set the value in the blockchain</h3>
-          <Form inline>
+        <Form inline onKeyDown={(e) => this.checkEnter(e, this.setValue)}>
           <FormGroup>
             <FormControl
               type="text"
               defaultValue={this.state.valueSet}
-                onChange={(e) => this.handleChange(e)} />
+              onChange={(e) => this.handleChange(e)}/>
             <Button bsStyle="primary" onClick={(e) => this.setValue(e)}>Set Value</Button>
-              <HelpBlock>Once you set the value, the transaction will need to be mined and then the value will be updated on the blockchain.</HelpBlock>
+            <HelpBlock>Once you set the value, the transaction will need to be mined and then the value will be updated
+              on the blockchain.</HelpBlock>
           </FormGroup>
         </Form>
 
@@ -86,6 +95,6 @@ class Blockchain extends React.Component {
       </React.Fragment>
     );
   }
-  }
+}
 
-  export default Blockchain;
+export default Blockchain;