unselect current file when switch to an app tab

src/app/files/fileManager.js

@@ -189,6 +189,12 @@ class FileManager extends FileSystemApi {
     this.switchFile()
   }
 
+  unselectCurrentFile () {
+    this.saveCurrentFile()
+    this._deps.config.set('currentFile', '')
+    this.events.emit('noFileSelected')
+  }
+
   switchFile (file) {
     const _switchFile = (file) => {
       this.saveCurrentFile()

src/app/panels/editor-panel.js

@@ -51,11 +51,11 @@ class EditorPanel {
     }
     self.tabProxy = new TabProxy(self._deps.fileManager, self._components.editor, self.appStore, self.appManager)
     let showApp = function (name) {
+      self._deps.fileManager.unselectCurrentFile()
       self.mainPanelComponent.showContent(name)
       self._view.editor.style.display = 'none'
       self._components.contextView.hide()
       self._view.mainPanel.style.display = 'block'
-      self.tabProxy.sh
     }
     self.appManager.event.on('ensureActivated', (name) => {
       if (name === 'home') {