refactor recorder logic to extract modal and confirm dialogs out, use blockchain class

src/app/tabs/runTab/model/recorder.js

@@ -288,84 +288,62 @@ class Recorder {
     return address
   }
 
-  runScenario (continueCb, promptCb, alertCb, confirmDialog, modalDialog, logCallBack, cb) {
-    var currentFile = this.config.get('currentFile')
-    this.fileManager.fileProviderOf(currentFile).get(currentFile, (error, json) => {
-      if (error) {
-        return cb('Invalid Scenario File ' + error)
+  fromWei (value, doTypeConversion, unit) {
+    if (doTypeConversion) {
+      return Web3.utils.fromWei(typeConversion.toInt(value), unit || 'ether')
     }
-      if (!currentFile.match('.json$')) {
-        return cb('A scenario file is required. Please make sure a scenario file is currently displayed in the editor. The file must be of type JSON. Use the "Save Transactions" Button to generate a new Scenario File.')
-      }
-      try {
-        var obj = JSON.parse(json)
-        var txArray = obj.transactions || []
-        var accounts = obj.accounts || []
-        var options = obj.options || {}
-        var abis = obj.abis || {}
-        var linkReferences = obj.linkReferences || {}
-      } catch (e) {
-        return cb('Invalid Scenario File, please try again')
+    return Web3.utils.fromWei(value.toString(10), unit || 'ether')
   }
 
-      if (!txArray.length) {
-        return
+  toWei (value, unit) {
+    return Web3.utils.toWei(value, unit || 'gwei')
   }
 
-      var confirmationCb = (network, tx, gasEstimation, continueTxExecution, cancelCb) => {
-        if (network.name !== 'Main') {
-          return continueTxExecution(null)
+  calculateFee (gas, gasPrice, unit) {
+    return Web3.utils.toBN(gas).mul(Web3.utils.toBN(Web3.utils.toWei(gasPrice.toString(10), unit || 'gwei')))
   }
-        var amount = Web3.utils.fromWei(typeConversion.toInt(tx.value), 'ether')
 
-        // TODO: there is still a UI dependency to remove here, it's still too coupled at this point to remove easily
-        var content = confirmDialog(tx, amount, gasEstimation, this.recorder,
-          (gasPrice, cb) => {
+  determineGasFees (tx) {
+    const determineGasFeesCb = (gasPrice, cb) => {
       let txFeeText, priceStatus
       // TODO: this try catch feels like an anti pattern, can/should be
       // removed, but for now keeping the original logic
       try {
-              var fee = Web3.utils.toBN(tx.gas).mul(Web3.utils.toBN(Web3.utils.toWei(gasPrice.toString(10), 'gwei')))
-              txFeeText = ' ' + Web3.utils.fromWei(fee.toString(10), 'ether') + ' Ether'
+        var fee = this.calculateFee(tx.gas, gasPrice)
+        txFeeText = ' ' + this.fromWei(fee, false, 'ether') + ' Ether'
         priceStatus = true
       } catch (e) {
         txFeeText = ' Please fix this issue before sending any transaction. ' + e.message
         priceStatus = false
       }
       cb(txFeeText, priceStatus)
-          },
-          (cb) => {
-            this.executionContext.web3().eth.getGasPrice((error, gasPrice) => {
-              var warnMessage = ' Please fix this issue before sending any transaction. '
-              if (error) {
-                return cb('Unable to retrieve the current network gas price.' + warnMessage + error)
     }
-              try {
-                var gasPriceValue = Web3.utils.fromWei(gasPrice.toString(10), 'gwei')
-                cb(null, gasPriceValue)
-              } catch (e) {
-                cb(warnMessage + e.message, null, false)
+
+    return determineGasFeesCb
   }
-            })
+
+  runScenario (continueCb, promptCb, alertCb, confirmationCb, logCallBack, cb) {
+    var currentFile = this.config.get('currentFile')
+    this.fileManager.fileProviderOf(currentFile).get(currentFile, (error, json) => {
+      if (error) {
+        return cb('Invalid Scenario File ' + error)
       }
-        )
-        modalDialog('Confirm transaction', content,
-          { label: 'Confirm',
-            fn: () => {
-              this.config.setUnpersistedProperty('doNotShowTransactionConfirmationAgain', content.querySelector('input#confirmsetting').checked)
-              // TODO: check if this is check is still valid given the refactor
-              if (!content.gasPriceStatus) {
-                cancelCb('Given gas price is not correct')
-              } else {
-                var gasPrice = Web3.utils.toWei(content.querySelector('#gasprice').value, 'gwei')
-                continueTxExecution(gasPrice)
+      if (!currentFile.match('.json$')) {
+        return cb('A scenario file is required. Please make sure a scenario file is currently displayed in the editor. The file must be of type JSON. Use the "Save Transactions" Button to generate a new Scenario File.')
       }
-            }}, {
-              label: 'Cancel',
-              fn: () => {
-                return cancelCb('Transaction canceled by user.')
+      try {
+        var obj = JSON.parse(json)
+        var txArray = obj.transactions || []
+        var accounts = obj.accounts || []
+        var options = obj.options || {}
+        var abis = obj.abis || {}
+        var linkReferences = obj.linkReferences || {}
+      } catch (e) {
+        return cb('Invalid Scenario File, please try again')
       }
-            })
+
+      if (!txArray.length) {
+        return
       }
 
       this.run(txArray, accounts, options, abis, linkReferences, confirmationCb, continueCb, promptCb, alertCb, logCallBack, (abi, address, contractName) => {

src/app/tabs/runTab/recorder.js

@@ -10,7 +10,8 @@ var confirmDialog = require('../../ui/confirmDialog')
 
 class RecorderUI {
 
-  constructor (recorder, logCallBack) {
+  constructor (blockchain, recorder, logCallBack) {
+    this.blockchain = blockchain
     this.recorder = recorder
     this.logCallBack = logCallBack
     this.event = new EventManager()
@@ -63,8 +64,10 @@ class RecorderUI {
       modalDialogCustom.alert(msg)
     }
 
+    const confirmationCb = this.getConfirmationCb(modalDialog, confirmDialog)
+
     // TODO: there is still a UI dependency to remove here, it's still too coupled at this point to remove easily
-    this.recorder.runScenario(continueCb, promptCb, alertCb, confirmDialog, modalDialog, this.logCallBack, (error, abi, address, contractName) => {
+    this.recorder.runScenario(continueCb, promptCb, alertCb, confirmationCb, this.logCallBack, (error, abi, address, contractName) => {
       if (error) {
         return modalDialogCustom.alert(error)
       }
@@ -73,6 +76,37 @@ class RecorderUI {
     })
   }
 
+  getConfirmationCb (modalDialog, confirmDialog) {
+    const confirmationCb = (network, tx, gasEstimation, continueTxExecution, cancelCb) => {
+      if (network.name !== 'Main') {
+        return continueTxExecution(null)
+      }
+      const amount = this.recorder.fromWei(tx.value, true, 'ether')
+      const content = confirmDialog(tx, amount, gasEstimation, null, this.recorder.determineGasFees(tx), this.blockchain.determineGasPrice)
+
+      modalDialog('Confirm transaction', content,
+        { label: 'Confirm',
+          fn: () => {
+            this.config.setUnpersistedProperty('doNotShowTransactionConfirmationAgain', content.querySelector('input#confirmsetting').checked)
+            // TODO: check if this is check is still valid given the refactor
+            if (!content.gasPriceStatus) {
+              cancelCb('Given gas price is not correct')
+            } else {
+              var gasPrice = this.recorder.toWei(content.querySelector('#gasprice').value, 'gwei')
+              continueTxExecution(gasPrice)
+            }
+          }}, {
+            label: 'Cancel',
+            fn: () => {
+              return cancelCb('Transaction canceled by user.')
+            }
+          }
+      )
+    }
+
+    return confirmationCb
+  }
+
   triggerRecordButton () {
     this.recorder.saveScenario(
       (path, cb) => {

src/app/udapp/run-tab.js

@@ -41,6 +41,7 @@ export class RunTab extends LibraryPlugin {
     this.config = config
     this.udapp = udapp
     this.executionContext = executionContext
+    this.blockchain = new Blockchain(this.executionContext, udapp)
     this.fileManager = fileManager
     this.editor = editor
     this.logCallback = (msg) => { mainView.getTerminal().logHtml(msg) }
@@ -133,8 +134,7 @@ export class RunTab extends LibraryPlugin {
 
   renderDropdown (udappUI, fileManager, compilersArtefacts, config, editor, udapp, filePanel, logCallback) {
     const dropdownLogic = new DropdownLogic(compilersArtefacts, config, editor, this)
-    const blockchain = new Blockchain(this.executionContext, udapp)
-    this.contractDropdownUI = new ContractDropdownUI(blockchain, dropdownLogic, logCallback, this)
+    this.contractDropdownUI = new ContractDropdownUI(this.blockchain, dropdownLogic, logCallback, this)
 
     fileManager.events.on('currentFileChanged', this.contractDropdownUI.changeCurrentFile.bind(this.contractDropdownUI))
 
@@ -159,7 +159,7 @@ export class RunTab extends LibraryPlugin {
     })
     this.event.register('clearInstance', recorder.clearAll.bind(recorder))
 
-    this.recorderInterface = new RecorderUI(recorder, logCallback)
+    this.recorderInterface = new RecorderUI(this.blockchain, recorder, logCallback)
 
     this.recorderInterface.event.register('newScenario', (abi, address, contractName) => {
       var noInstancesText = this.noInstancesText