- node url update

src/TxBrowser.js

@@ -4,6 +4,7 @@ var EventManager = require('./lib/eventManager')
 var traceHelper = require('./helpers/traceHelper')
 var yo = require('yo-yo')
 var ui = require('./helpers/ui')
+var init = require('./helpers/init')
 
 function TxBrowser (_web3) {
   util.extend(this, new EventManager())
@@ -31,6 +32,8 @@ TxBrowser.prototype.setDefaultValues = function () {
   this.hash = ' - '
   this.blockNumber = null
   this.txNumber = '0xcda2b2835add61af54cf83bd076664d98d7908c6cd98d86423b3b48d8b8e51ff'
+  this.connectInfo = ''
+  this.checkWeb3()
 }
 
 TxBrowser.prototype.submit = function () {
@@ -66,6 +69,22 @@ TxBrowser.prototype.submit = function () {
   yo.update(this.view, this.render())
 }
 
+TxBrowser.prototype.updateWeb3Url = function (ev) {
+  init.setProvider(this.web3, ev.target.value)
+  this.checkWeb3()
+  yo.update(this.view, this.render())
+}
+
+TxBrowser.prototype.checkWeb3 = function () {
+  try {
+    console.log('block ' + this.web3.eth.blockNumber)
+    this.connectInfo = 'Connected to ' + this.web3.currentProvider.host
+  } catch (e) {
+    console.log(e)
+    this.connectInfo = e.message
+  }
+}
+
 TxBrowser.prototype.updateBlockN = function (ev) {
   this.blockNumber = ev.target.value
 }
@@ -82,8 +101,12 @@ TxBrowser.prototype.init = function (ev) {
 TxBrowser.prototype.render = function () {
   var self = this
   var view = yo`<div style=${ui.formatCss(style.container)}>
-        <input onchange=${function () { self.updateBlockN(arguments[0]) }} type='text' placeholder=${'Block number (default 1000110)' + this.blockNumber}></input>
-        <input onchange=${function () { self.updateTxN(arguments[0]) }} type='text' value=${this.txNumber} placeholder=${'Transaction Number or hash (default 2) ' + this.txNumber}></input>
+        <span>Node URL: </span><input onkeyup=${function () { self.updateWeb3Url(arguments[0]) }} value=${this.web3.currentProvider ? this.web3.currentProvider.host : ' - none - '} type='text' />
+        <span>${this.connectInfo}</span>
+        <br />
+        <br />
+        <input onkeyup=${function () { self.updateBlockN(arguments[0]) }} type='text' placeholder=${'Block number (default 1000110)' + this.blockNumber} />
+        <input onkeyup=${function () { self.updateTxN(arguments[0]) }} type='text' value=${this.txNumber} placeholder=${'Transaction Number or hash (default 2) ' + this.txNumber} />
         <button onclick=${function () { self.submit() }}>
           Get
         </button>

src/helpers/init.js

@@ -8,5 +8,9 @@ module.exports = {
     web3.setProvider(new web3.providers.HttpProvider('http://localhost:8545'))
     Web3Admin.extend(web3)
     return web3
+  },
+
+  setProvider: function (web3, url) {
+    web3.setProvider(new web3.providers.HttpProvider(url))
   }
 }