feat: new revision history UI (#861)

app/assets/javascripts/ui_models/app_state/notes_state.ts

@@ -32,6 +32,7 @@ export class NotesState {
   contextMenuClickLocation: { x: number; y: number } = { x: 0, y: 0 };
   contextMenuMaxHeight: number | 'auto' = 'auto';
   showProtectedWarning = false;
+  showRevisionHistoryModal = false;
 
   constructor(
     private application: WebApplication,
@@ -44,6 +45,7 @@ export class NotesState {
       contextMenuOpen: observable,
       contextMenuPosition: observable,
       showProtectedWarning: observable,
+      showRevisionHistoryModal: observable,
 
       selectedNotesCount: computed,
       trashedNotesCount: computed,
@@ -53,6 +55,7 @@ export class NotesState {
       setContextMenuPosition: action,
       setContextMenuMaxHeight: action,
       setShowProtectedWarning: action,
+      setShowRevisionHistoryModal: action,
       unselectNotes: action,
     });
 
@@ -457,4 +460,8 @@ export class NotesState {
   private get io() {
     return this.application.io;
   }
+
+  setShowRevisionHistoryModal(show: boolean): void {
+    this.showRevisionHistoryModal = show;
+  }
 }