fix for unsaved changes

app/components/SimpleEditor/ContainerEditor.js

@@ -48,9 +48,7 @@ class ContainerEditor extends SubstanceContainerEditor {
     // TODO -- this.props.history is deprecated and gives a warning
     if (this.props.history) {
       this.props.history.listenBefore((location, callback) => {
-        const commandStates = this.getCommandStates()
-
-        if (this.editorSession.hasUnsavedChanges()) {
+        if (this.props.containerId === 'body' && this.editorSession.hasUnsavedChanges()) {
           const editor = this.getEditor()
 
           editor.send('changesNotSaved')
@@ -69,14 +67,11 @@ class ContainerEditor extends SubstanceContainerEditor {
 
   // TODO -- review // messes up browser history
   controlBackButton () {
-    const commandStates = this.getCommandStates()
-    if (!commandStates['save']) return
-
     const url = '/books/' + this.props.book.id + '/book-builder'
 
     window.removeEventListener('popstate', this.controlBackButton)
 
-    if (this.editorSession.hasUnsavedChanges()) {
+    if (this.props.containerId === 'body' && this.editorSession.hasUnsavedChanges()) {
       const editor = this.getEditor()
 
       window.history.pushState(null, null, document.URL)