Fix bugs

src/app/services/cancel.service.ts

@@ -0,0 +1,30 @@
+import { Injectable } from '@angular/core';
+
+interface Subscriber {
+  callback: () => void;
+  object: object;
+}
+
+@Injectable({
+  providedIn: 'root'
+})
+export class CancelService {
+  private subscribers: Subscriber[] = [];
+
+  constructor() {}
+
+  subscribe(object: object, callback: () => void) {
+    this.subscribers.push({
+      object,
+      callback
+    });
+  }
+
+  cancelAllExcept(except: object) {
+    this.subscribers.filter(s => s.object !== except).map(s => s.callback());
+  }
+
+  cancelAll() {
+    this.subscribers.map(s => s.callback());
+  }
+}

src/app/services/modal.service.ts

@@ -1,6 +1,7 @@
 import { Injectable } from '@angular/core';
 import { Tower } from '../model/tower';
 import { top } from '../utils/top';
+import { CancelService } from './cancel.service';
 
 export enum ModalType {
   createBlock,
@@ -25,8 +26,13 @@ interface Modal {
 export class ModalService {
   private modalStack: Modal[] = [];
 
-  showCreateBlock(options: string[]): Promise<{ selected: string; description: string; isDone: boolean }> {
-    return this.createPromiseAndPushToStack(options, ModalType.createBlock);
+  constructor(private cancelService: CancelService) {}
+
+  showCreateBlock(input: {
+    options: string[];
+    isTask: boolean;
+  }): Promise<{ selected: string; description: string; isDone: boolean }> {
+    return this.createPromiseAndPushToStack(input, ModalType.createBlock);
   }
 
   showEditBlock(data: {
@@ -65,6 +71,8 @@ export class ModalService {
   }
 
   private createPromiseAndPushToStack(input: any, type: ModalType): Promise<any> {
+    this.cancelService.cancelAll();
+
     const modal = {
       input,
       type,

src/app/services/store.service.ts

@@ -1,7 +1,7 @@
 import { Injectable } from '@angular/core';
 import { Page } from '../model/page';
 
-const LOCAL_STORAGE_KEY = 'life-towers.data.v.2.1';
+const LOCAL_STORAGE_KEY = 'life-towers.data.v.2';
 
 @Injectable({
   providedIn: 'root'