listen on activation

src/app/tabs/compile-tab.js

@@ -54,8 +54,14 @@ class CompileTab {
       this._deps.config,
       this.queryParams
     )
+  }
 
+  activate () {
     this.listenToEvents()
+    this.compilerContainer.activate()
+  }
+
+  deactivate () {
   }
 
   /************

src/app/tabs/compileTab/compilerContainer.js

@@ -25,8 +25,6 @@ class CompilerContainer {
       defaultVersion: 'soljson-v0.5.1+commit.c8a2cb62.js', // this default version is defined: in makeMockCompiler (for browser test) and in package.json (downloadsolc_root) for the builtin compiler
       baseurl: 'https://solc-bin.ethereum.org/bin'
     }
-
-    this.listenToEvents()
   }
 
   /**
@@ -38,6 +36,13 @@ class CompilerContainer {
     yo.update(this._view.compilationButton, button)
   }
 
+  deactivate () {
+  }
+
+  activate () {
+    this.listenToEvents()
+  }
+
   listenToEvents () {
     this.editor.event.register('contentChanged', this.scheduleCompilation.bind(this))
     this.editor.event.register('sessionSwitched', this.scheduleCompilation.bind(this))