Merge pull request #2195 from ethereum/swapPanelHeight

src/app/files/fileManager.js

@@ -102,10 +102,7 @@ class FileManager extends Plugin {
 
   closeFile (name) {
     delete this.openedFiles[name]
-    if (Object.keys(this.openedFiles).length) {
-      this.switchFile(Object.keys(this.openedFiles)[0])
-    } else {
-      this.editor.displayEmptyReadOnlySession()
+    if (!Object.keys(this.openedFiles).length) {
       this._deps.config.set('currentFile', '')
       this.events.emit('noFileSelected')
     }
@@ -274,7 +271,6 @@ class FileManager extends Plugin {
         if (fileList.length) {
           _switchFile(browserProvider.type + '/' + fileList[0])
         } else {
-          this.editor.displayEmptyReadOnlySession()
           this.events.emit('noFileSelected')
         }
       })

src/app/panels/main-view.js

@@ -82,6 +82,9 @@ export class MainView {
       self._components.contextView.show()
       self._view.mainPanel.style.display = 'none'
     })
+    self.tabProxy.event.on('tabCountChanged', (count) => {
+      if (!count) this.editor.displayEmptyReadOnlySession()
+    })
     self.data = {
       _layout: {
         top: {

src/app/panels/tab-proxy.js

@@ -110,6 +110,13 @@ export class TabProxy {
     }
   }
 
+  switchToActiveTab () {
+    const active = this._view.filetabs.active
+    if (active && this._handlers[active]) {
+      this.switchTab(active)
+    }
+  }
+
   showTab (name) {
     this._view.filetabs.activateTab(name)
   }
@@ -133,6 +140,7 @@ export class TabProxy {
   removeTab (name) {
     this._view.filetabs.removeTab(name)
     delete this._handlers[name]
+    this.switchToActiveTab()
   }
 
   addHandler (type, fn) {
@@ -143,9 +151,11 @@ export class TabProxy {
     this._view.filetabs = yo`<remix-tabs></remix-tabs>`
     this._view.filetabs.addEventListener('tabClosed', (event) => {
       if (this._handlers[event.detail]) this._handlers[event.detail].close()
+      this.event.emit('tabCountChanged', this._view.filetabs.tabs.length)
     })
     this._view.filetabs.addEventListener('tabActivated', (event) => {
       if (this._handlers[event.detail]) this._handlers[event.detail].switchTo()
+      this.event.emit('tabCountChanged', this._view.filetabs.tabs.length)
     })
 
     this._view.filetabs.canAdd = false