adding `retrieveTrace` to the remix-plugin API

src/app/tabs/debugger-tab.js

@@ -9,7 +9,7 @@ import * as packageJson from '../../../package.json'
 const profile = {
   name: 'debugger',
   displayName: 'Debugger',
-  methods: ['debug'],
+  methods: ['debug', 'retrieveTrace'],
   events: [],
   icon: 'data:image/svg+xml;base64,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',
   description: 'Debug transactions',
@@ -38,7 +38,11 @@ class DebuggerTab extends ViewPlugin {
   }
 
   debug (hash) {
-    if (this.debugger) this.debuggerUI.debug(hash)
+    if (this.debuggerUI) this.debuggerUI.debug(hash)
+  }
+
+  async retrieveTrace (hash) {
+    return await this.debuggerUI.retrieveTrace(hash)
   }
 
   debugger () {

src/app/tabs/debugger/debuggerUI.js

@@ -103,14 +103,8 @@ class DebuggerUI {
     return this.isActive
   }
 
-  startDebugging (blockNumber, txNumber, tx) {
-    const self = this
-    if (this.debugger) this.unLoad()
-
-    let compilers = this.registry.get('compilersartefacts').api
-    let lastCompilationResult
-    if (compilers['__last']) lastCompilationResult = compilers['__last']
-
+  async getDebugWeb3 () {
+    return new Promise((resolve, reject) => {
       executionContext.detectNetwork((error, network) => {
         let web3
         if (error || !network) {
@@ -120,6 +114,20 @@ class DebuggerUI {
           web3 = (!webDebugNode ? executionContext.web3() : webDebugNode)
         }
         init.extendWeb3(web3)
+        resolve(web3)
+      })
+    })
+  }
+
+  async startDebugging (blockNumber, txNumber, tx) {
+    const self = this
+    if (this.debugger) this.unLoad()
+
+    let compilers = this.registry.get('compilersartefacts').api
+    let lastCompilationResult
+    if (compilers['__last']) lastCompilationResult = compilers['__last']
+
+    let web3 = await this.getDebugWeb3()
     this.debugger = new Debugger({
       web3,
       offsetToLineColumnConverter: this.registry.get('offsettolinecolumnconverter').api,
@@ -136,6 +144,25 @@ class DebuggerUI {
       toaster(error)
       this.unLoad()
     })
+  }
+
+  async retrieveTrace (hash) {
+    return new Promise(async (resolve, reject) => {
+      let compilers = this.registry.get('compilersartefacts').api
+      let lastCompilationResult
+      if (compilers['__last']) lastCompilationResult = compilers['__last']
+
+      let web3 = await this.getDebugWeb3()
+
+      let debug = new Debugger({
+        web3,
+        offsetToLineColumnConverter: this.registry.get('offsettolinecolumnconverter').api,
+        compiler: { lastCompilationResult }
+      })
+      debug.debugger.traceManager.traceRetriever.getTrace(hash, (error, trace) => {
+        if (error) return reject(error)
+        resolve(trace)
+      })
     })
   }