From fbd34a0882a222347db8cc728f2e98054a19daed Mon Sep 17 00:00:00 2001
From: Lucio Lelii <lucio.lelii@isti.cnr.it>
Date: Fri, 9 Jan 2026 17:20:27 +0100
Subject: [PATCH]  added store state for editor

---
 src/app/app.html                              |  1 +
 src/app/app.routes.ts                         |  2 +-
 src/app/app.ts                                |  3 +-
 src/app/layouts/flow-editor/flow-editor.html  | 33 ++++++++++++-
 src/app/layouts/flow-editor/flow-editor.ts    | 14 +++++-
 src/app/models/flow.ts                        |  6 +++
 .../main/editor-sidebar/editor-sidebar.css}   |  0
 .../main/editor-sidebar/editor-sidebar.html   | 13 +++++
 .../editor-sidebar/editor-sidebar.spec.ts     | 23 +++++++++
 .../main/editor-sidebar/editor-sidebar.ts     | 26 ++++++++++
 src/app/pages/main/tasks/tasks.css            |  0
 .../{layouts => pages/main}/tasks/tasks.html  |  0
 .../main}/tasks/tasks.spec.ts                 |  0
 .../{layouts => pages/main}/tasks/tasks.ts    |  0
 .../services/dialogs/confirm-dialog.spec.ts   | 16 +++++++
 src/app/services/dialogs/confirm-dialog.ts    | 26 ++++++++++
 src/app/shared/accordion/accordion.css        |  0
 src/app/shared/accordion/accordion.html       | 38 +++++++++++++++
 src/app/shared/accordion/accordion.spec.ts    | 23 +++++++++
 src/app/shared/accordion/accordion.ts         | 14 ++++++
 .../shared/confirm-dialog/confirm-dialog.css  |  0
 .../shared/confirm-dialog/confirm-dialog.html | 35 ++++++++++++++
 .../confirm-dialog/confirm-dialog.spec.ts     | 23 +++++++++
 .../shared/confirm-dialog/confirm-dialog.ts   | 18 +++++++
 src/app/shared/flows-list/flows-list.css      |  0
 src/app/shared/flows-list/flows-list.html     | 48 +++++++++++++++++++
 src/app/shared/flows-list/flows-list.spec.ts  | 23 +++++++++
 src/app/shared/flows-list/flows-list.ts       | 35 ++++++++++++++
 src/app/stores/editor.spec.ts                 | 16 +++++++
 src/app/stores/editor.ts                      | 46 ++++++++++++++++++
 30 files changed, 477 insertions(+), 5 deletions(-)
 create mode 100644 src/app/models/flow.ts
 rename src/app/{layouts/tasks/tasks.css => pages/main/editor-sidebar/editor-sidebar.css} (100%)
 create mode 100644 src/app/pages/main/editor-sidebar/editor-sidebar.html
 create mode 100644 src/app/pages/main/editor-sidebar/editor-sidebar.spec.ts
 create mode 100644 src/app/pages/main/editor-sidebar/editor-sidebar.ts
 create mode 100644 src/app/pages/main/tasks/tasks.css
 rename src/app/{layouts => pages/main}/tasks/tasks.html (100%)
 rename src/app/{layouts => pages/main}/tasks/tasks.spec.ts (100%)
 rename src/app/{layouts => pages/main}/tasks/tasks.ts (100%)
 create mode 100644 src/app/services/dialogs/confirm-dialog.spec.ts
 create mode 100644 src/app/services/dialogs/confirm-dialog.ts
 create mode 100644 src/app/shared/accordion/accordion.css
 create mode 100644 src/app/shared/accordion/accordion.html
 create mode 100644 src/app/shared/accordion/accordion.spec.ts
 create mode 100644 src/app/shared/accordion/accordion.ts
 create mode 100644 src/app/shared/confirm-dialog/confirm-dialog.css
 create mode 100644 src/app/shared/confirm-dialog/confirm-dialog.html
 create mode 100644 src/app/shared/confirm-dialog/confirm-dialog.spec.ts
 create mode 100644 src/app/shared/confirm-dialog/confirm-dialog.ts
 create mode 100644 src/app/shared/flows-list/flows-list.css
 create mode 100644 src/app/shared/flows-list/flows-list.html
 create mode 100644 src/app/shared/flows-list/flows-list.spec.ts
 create mode 100644 src/app/shared/flows-list/flows-list.ts
 create mode 100644 src/app/stores/editor.spec.ts
 create mode 100644 src/app/stores/editor.ts

diff --git a/src/app/app.html b/src/app/app.html
index 67e7bd4..8c47805 100644
--- a/src/app/app.html
+++ b/src/app/app.html
@@ -1 +1,2 @@
 <router-outlet />
+<app-confirm-dialog-host></app-confirm-dialog-host>
diff --git a/src/app/app.routes.ts b/src/app/app.routes.ts
index d536e16..f01e580 100644
--- a/src/app/app.routes.ts
+++ b/src/app/app.routes.ts
@@ -4,7 +4,7 @@ import { Signup } from '@pages/auth/signup/signup';
 import { AppLayout } from '@layouts/app-layout/app-layout';
 import { authGuard } from '@guards/auth-guard';
 import { FlowEditor } from '@layouts/flow-editor/flow-editor';
-import { Tasks } from '@layouts/tasks/tasks';
+import { Tasks } from '@pages/main/tasks/tasks';
 
 export const routes: Routes = [
  {
diff --git a/src/app/app.ts b/src/app/app.ts
index 971a834..a46483b 100644
--- a/src/app/app.ts
+++ b/src/app/app.ts
@@ -1,9 +1,10 @@
 import { Component, signal } from '@angular/core';
 import { RouterOutlet } from '@angular/router';
+import { ConfirmDialogHostComponent } from '@shared/confirm-dialog/confirm-dialog';
 
 @Component({
   selector: 'app-root',
-  imports: [RouterOutlet],
+  imports: [RouterOutlet, ConfirmDialogHostComponent],
   templateUrl: './app.html',
   styleUrl: './app.css'
 })
diff --git a/src/app/layouts/flow-editor/flow-editor.html b/src/app/layouts/flow-editor/flow-editor.html
index accabde..b7e28cf 100644
--- a/src/app/layouts/flow-editor/flow-editor.html
+++ b/src/app/layouts/flow-editor/flow-editor.html
@@ -1 +1,32 @@
-<p>flow-editor works!</p>
+<div class="app-layout min-h-screen flex flex-col">
+
+  <!-- HEADER -->
+  <!--<app-header></app-header> -->
+
+  <!-- BODY -->
+  <div class="flex flex-1 overflow-hidden">
+
+    <!-- LEFT SIDEBAR -->
+    <div class="w-lg border-r bg-white shadow-sm p-2 overflow-auto">
+      <app-editor-sidebar></app-editor-sidebar>
+    </div>
+
+    <!-- CENTER EDITOR -->
+    <main class="flex-1 bg-gray-100 overflow-auto">
+      @if (flow()) {
+      <div>
+        <h2 class="text-sm font-semibold">{{ flow()?.name }}</h2>
+        <!-- editor canvas -->
+      </div>
+      } @else {
+      <div class="text-gray-400 text-center mt-10">
+        Select a document
+      </div>
+      }
+    </main>
+
+    <!-- RIGHT PANEL -->
+    <!-- <app-right-panel></app-right-panel> -->
+
+  </div>
+</div>
\ No newline at end of file
diff --git a/src/app/layouts/flow-editor/flow-editor.ts b/src/app/layouts/flow-editor/flow-editor.ts
index 801d544..bab1f96 100644
--- a/src/app/layouts/flow-editor/flow-editor.ts
+++ b/src/app/layouts/flow-editor/flow-editor.ts
@@ -1,11 +1,21 @@
-import { Component } from '@angular/core';
+import { Component, inject } from '@angular/core';
+import { Flow } from '@models/flow';
+import { EditorSidebar } from "@pages/main/editor-sidebar/editor-sidebar";
+import { EditorStateHolder } from 'app/stores/editor';
 
 @Component({
   selector: 'app-flow-editor',
-  imports: [],
+  imports: [EditorSidebar],
   templateUrl: './flow-editor.html',
   styleUrl: './flow-editor.css',
 })
 export class FlowEditor {
 
+  private editorState: EditorStateHolder = inject(EditorStateHolder);
+
+
+  flow = this.editorState.currentFlow; 
+
+  
+
 }
diff --git a/src/app/models/flow.ts b/src/app/models/flow.ts
new file mode 100644
index 0000000..6bd9708
--- /dev/null
+++ b/src/app/models/flow.ts
@@ -0,0 +1,6 @@
+export type Flow = {
+    id: string;
+    name: string;
+    visibility: 'public' | 'private';
+    data: any;
+};
\ No newline at end of file
diff --git a/src/app/layouts/tasks/tasks.css b/src/app/pages/main/editor-sidebar/editor-sidebar.css
similarity index 100%
rename from src/app/layouts/tasks/tasks.css
rename to src/app/pages/main/editor-sidebar/editor-sidebar.css
diff --git a/src/app/pages/main/editor-sidebar/editor-sidebar.html b/src/app/pages/main/editor-sidebar/editor-sidebar.html
new file mode 100644
index 0000000..7dc558d
--- /dev/null
+++ b/src/app/pages/main/editor-sidebar/editor-sidebar.html
@@ -0,0 +1,13 @@
+<app-accordion title="Flows" icon="bi-lightning-charge-fill" [open]="true" [open]="openAccordion === 'flows'"
+  (toggle)="toggle('flows')">
+    <app-flows-list></app-flows-list>
+</app-accordion>
+
+<app-accordion title="Blocks" icon="bi-boxes" [open]="openAccordion === 'blocks'"
+  (toggle)="toggle('blocks')">
+  <div class="space-y-2">
+    <div class="block-item">Input</div>
+    <div class="block-item">Transform</div>
+    <div class="block-item">Output</div>
+  </div>
+</app-accordion>
\ No newline at end of file
diff --git a/src/app/pages/main/editor-sidebar/editor-sidebar.spec.ts b/src/app/pages/main/editor-sidebar/editor-sidebar.spec.ts
new file mode 100644
index 0000000..39d3ea6
--- /dev/null
+++ b/src/app/pages/main/editor-sidebar/editor-sidebar.spec.ts
@@ -0,0 +1,23 @@
+import { ComponentFixture, TestBed } from '@angular/core/testing';
+
+import { EditorSidebar } from './editor-sidebar';
+
+describe('EditorSidebar', () => {
+  let component: EditorSidebar;
+  let fixture: ComponentFixture<EditorSidebar>;
+
+  beforeEach(async () => {
+    await TestBed.configureTestingModule({
+      imports: [EditorSidebar]
+    })
+    .compileComponents();
+
+    fixture = TestBed.createComponent(EditorSidebar);
+    component = fixture.componentInstance;
+    await fixture.whenStable();
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+});
diff --git a/src/app/pages/main/editor-sidebar/editor-sidebar.ts b/src/app/pages/main/editor-sidebar/editor-sidebar.ts
new file mode 100644
index 0000000..0b6bea4
--- /dev/null
+++ b/src/app/pages/main/editor-sidebar/editor-sidebar.ts
@@ -0,0 +1,26 @@
+import { Component } from '@angular/core';
+import { Accordion } from '@shared/accordion/accordion';
+import { FlowsList } from '@shared/flows-list/flows-list';
+
+type AccordionId = 'flows' | 'blocks';
+
+@Component({
+  selector: 'app-editor-sidebar',
+  imports: [Accordion, FlowsList],
+  templateUrl: './editor-sidebar.html',
+  styleUrl: './editor-sidebar.css',
+})
+export class EditorSidebar {
+
+  collapsed = false;
+
+  openAccordion: AccordionId | null = null;
+
+  collapse() {
+    this.collapsed = !this.collapsed;
+  }
+
+  toggle(id: AccordionId) {
+    this.openAccordion = this.openAccordion === id ? null : id;
+  }
+}
diff --git a/src/app/pages/main/tasks/tasks.css b/src/app/pages/main/tasks/tasks.css
new file mode 100644
index 0000000..e69de29
diff --git a/src/app/layouts/tasks/tasks.html b/src/app/pages/main/tasks/tasks.html
similarity index 100%
rename from src/app/layouts/tasks/tasks.html
rename to src/app/pages/main/tasks/tasks.html
diff --git a/src/app/layouts/tasks/tasks.spec.ts b/src/app/pages/main/tasks/tasks.spec.ts
similarity index 100%
rename from src/app/layouts/tasks/tasks.spec.ts
rename to src/app/pages/main/tasks/tasks.spec.ts
diff --git a/src/app/layouts/tasks/tasks.ts b/src/app/pages/main/tasks/tasks.ts
similarity index 100%
rename from src/app/layouts/tasks/tasks.ts
rename to src/app/pages/main/tasks/tasks.ts
diff --git a/src/app/services/dialogs/confirm-dialog.spec.ts b/src/app/services/dialogs/confirm-dialog.spec.ts
new file mode 100644
index 0000000..5cf3c85
--- /dev/null
+++ b/src/app/services/dialogs/confirm-dialog.spec.ts
@@ -0,0 +1,16 @@
+import { TestBed } from '@angular/core/testing';
+
+import { ConfirmDialog } from './confirm-dialog';
+
+describe('ConfirmDialog', () => {
+  let service: ConfirmDialog;
+
+  beforeEach(() => {
+    TestBed.configureTestingModule({});
+    service = TestBed.inject(ConfirmDialog);
+  });
+
+  it('should be created', () => {
+    expect(service).toBeTruthy();
+  });
+});
diff --git a/src/app/services/dialogs/confirm-dialog.ts b/src/app/services/dialogs/confirm-dialog.ts
new file mode 100644
index 0000000..21f8bf6
--- /dev/null
+++ b/src/app/services/dialogs/confirm-dialog.ts
@@ -0,0 +1,26 @@
+import { Injectable, signal } from "@angular/core";
+
+@Injectable({ providedIn: 'root' })
+export class ConfirmDialogService {
+
+  private _state = signal<{
+    message: string;
+    resolve: (v: boolean) => void;
+  } | null>(null);
+
+  readonly state = this._state.asReadonly();
+
+  open(message: string): Promise<boolean> {
+    return new Promise<boolean>(resolve => {
+      this._state.set({ message, resolve });
+    });
+  }
+
+  confirm(result: boolean) {
+    const s = this._state();
+    if (!s) return;
+
+    s.resolve(result);
+    this._state.set(null);
+  }
+}
diff --git a/src/app/shared/accordion/accordion.css b/src/app/shared/accordion/accordion.css
new file mode 100644
index 0000000..e69de29
diff --git a/src/app/shared/accordion/accordion.html b/src/app/shared/accordion/accordion.html
new file mode 100644
index 0000000..5887c3c
--- /dev/null
+++ b/src/app/shared/accordion/accordion.html
@@ -0,0 +1,38 @@
+<div
+  class="rounded-xl border border-gray-200
+         bg-white shadow-sm
+         transition">
+
+  <!-- Header -->
+  <button
+    type="button"
+    (click)="toggle.emit()"
+    class="w-full flex items-center justify-between
+           px-4 py-3
+           text-sm font-semibold text-gray-700
+           hover:bg-gray-50">
+
+    <div class="flex items-center gap-2">
+      <i class="bi {{ icon }} text-indigo-500"></i>
+      {{ title }}
+    </div>
+
+    <i
+      class="bi bi-chevron-down
+             transition-transform duration-200"
+      [class.rotate-180]="open()">
+    </i>
+  </button>
+
+  <!-- Body -->
+  <div
+    class="overflow-hidden transition-all duration-300"
+    [class.max-h-0]="!open()"
+    [class.max-h-96]="open()">
+
+    <div class="p-3 space-y-2">
+      <ng-content></ng-content>
+    </div>
+
+  </div>
+</div>
diff --git a/src/app/shared/accordion/accordion.spec.ts b/src/app/shared/accordion/accordion.spec.ts
new file mode 100644
index 0000000..fa15d4c
--- /dev/null
+++ b/src/app/shared/accordion/accordion.spec.ts
@@ -0,0 +1,23 @@
+import { ComponentFixture, TestBed } from '@angular/core/testing';
+
+import { Accordion } from './accordion';
+
+describe('Accordion', () => {
+  let component: Accordion;
+  let fixture: ComponentFixture<Accordion>;
+
+  beforeEach(async () => {
+    await TestBed.configureTestingModule({
+      imports: [Accordion]
+    })
+    .compileComponents();
+
+    fixture = TestBed.createComponent(Accordion);
+    component = fixture.componentInstance;
+    await fixture.whenStable();
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+});
diff --git a/src/app/shared/accordion/accordion.ts b/src/app/shared/accordion/accordion.ts
new file mode 100644
index 0000000..ca6faa7
--- /dev/null
+++ b/src/app/shared/accordion/accordion.ts
@@ -0,0 +1,14 @@
+import { Component, EventEmitter, input, Input, Output } from '@angular/core';
+
+@Component({
+  selector: 'app-accordion',
+  imports: [],
+  templateUrl: './accordion.html',
+  styleUrl: './accordion.css',
+})
+export class Accordion {
+  @Input() title = '';
+  @Input() icon = '';
+  open = input<boolean>(false);
+  @Output() toggle = new EventEmitter<void>();
+}
diff --git a/src/app/shared/confirm-dialog/confirm-dialog.css b/src/app/shared/confirm-dialog/confirm-dialog.css
new file mode 100644
index 0000000..e69de29
diff --git a/src/app/shared/confirm-dialog/confirm-dialog.html b/src/app/shared/confirm-dialog/confirm-dialog.html
new file mode 100644
index 0000000..7b33132
--- /dev/null
+++ b/src/app/shared/confirm-dialog/confirm-dialog.html
@@ -0,0 +1,35 @@
+@if(!!this.state()) {
+
+<div class="fixed inset-0 z-50 flex items-center justify-center">
+
+    <!-- Backdrop -->
+    <div class="absolute inset-0 bg-black/40" (click)="close(false)">
+    </div>
+
+    <!-- Modal -->
+    <div class="relative z-10 w-full max-w-md
+                 rounded-lg bg-white shadow-xl
+                 p-5 animate-fade-in">
+
+        <h3 class="text-lg font-semibold mb-3">
+            Confirm
+        </h3>
+
+        <p class="text-sm text-gray-700 mb-5">
+            {{ this.state()!.message }}
+        </p>
+
+        <div class="flex justify-end gap-2">
+            <button class="btn btn-outline-secondary" (click)="close(false)">
+                Cancel
+            </button>
+
+            <button class="btn btn-primary" (click)="close(true)">
+                OK
+            </button>
+        </div>
+    </div>
+
+</div>
+
+}
\ No newline at end of file
diff --git a/src/app/shared/confirm-dialog/confirm-dialog.spec.ts b/src/app/shared/confirm-dialog/confirm-dialog.spec.ts
new file mode 100644
index 0000000..85ecf02
--- /dev/null
+++ b/src/app/shared/confirm-dialog/confirm-dialog.spec.ts
@@ -0,0 +1,23 @@
+import { ComponentFixture, TestBed } from '@angular/core/testing';
+
+import { ConfirmDialog } from './confirm-dialog';
+
+describe('ConfirmDialog', () => {
+  let component: ConfirmDialog;
+  let fixture: ComponentFixture<ConfirmDialog>;
+
+  beforeEach(async () => {
+    await TestBed.configureTestingModule({
+      imports: [ConfirmDialog]
+    })
+    .compileComponents();
+
+    fixture = TestBed.createComponent(ConfirmDialog);
+    component = fixture.componentInstance;
+    await fixture.whenStable();
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+});
diff --git a/src/app/shared/confirm-dialog/confirm-dialog.ts b/src/app/shared/confirm-dialog/confirm-dialog.ts
new file mode 100644
index 0000000..305a068
--- /dev/null
+++ b/src/app/shared/confirm-dialog/confirm-dialog.ts
@@ -0,0 +1,18 @@
+import { Component, inject, Input } from '@angular/core';
+import { ConfirmDialogService } from '@services/dialogs/confirm-dialog';
+
+@Component({
+  selector: 'app-confirm-dialog-host',
+  standalone: true,
+  templateUrl: './confirm-dialog.html',
+})
+export class ConfirmDialogHostComponent {
+
+  private confirm: ConfirmDialogService = inject(ConfirmDialogService);
+
+  state = this.confirm.state;
+
+  close(result: boolean) {
+    this.confirm.confirm(result);
+  }
+}
diff --git a/src/app/shared/flows-list/flows-list.css b/src/app/shared/flows-list/flows-list.css
new file mode 100644
index 0000000..e69de29
diff --git a/src/app/shared/flows-list/flows-list.html b/src/app/shared/flows-list/flows-list.html
new file mode 100644
index 0000000..d1b4666
--- /dev/null
+++ b/src/app/shared/flows-list/flows-list.html
@@ -0,0 +1,48 @@
+<div class="btn-group w-full mb-3" role="group">
+
+    <button type="button" class="btn btn-sm w-full transition" [class.btn-primary]="filter === 'all'"
+        [class.btn-outline-primary]="filter !== 'all'" (click)="filter = 'all'">
+        All
+    </button>
+
+    <button type="button" class="btn btn-sm w-full transition" [class.btn-primary]="filter === 'public'"
+        [class.btn-outline-primary]="filter !== 'public'" (click)="filter = 'public'">
+        Public
+    </button>
+
+    <button type="button" class="btn btn-sm w-full transition" [class.btn-primary]="filter === 'private'"
+        [class.btn-outline-primary]="filter !== 'private'" (click)="filter = 'private'">
+        Private
+    </button>
+
+</div>
+
+<div class="space-y-2">
+    @for (flow of filteredFlows; track flow.id) {
+    <div class="group rounded-lg border
+           px-3 py-2 cursor-pointer
+           transition
+           hover:shadow-[0_0_12px_rgba(99,102,241,0.6)]
+           bg-indigo-50 border-indigo-200" (click)="open(flow)">
+
+        <div class="flex items-center justify-between text-sm">
+
+
+
+            <div class="flex items-center gap-2 text-indigo-700 font-medium">
+                <i class="bi" [ngClass]="{
+          'bi-globe': flow.visibility === 'public',
+          'bi-lock-fill': flow.visibility === 'private'
+        }" [class.text-indigo-500]="flow.visibility === 'public'"
+                    [class.text-gray-500]="flow.visibility === 'private'">
+                </i>
+                {{ flow.name }}
+            </div>
+
+
+
+        </div>
+    </div>
+    }
+
+</div>
\ No newline at end of file
diff --git a/src/app/shared/flows-list/flows-list.spec.ts b/src/app/shared/flows-list/flows-list.spec.ts
new file mode 100644
index 0000000..1470b75
--- /dev/null
+++ b/src/app/shared/flows-list/flows-list.spec.ts
@@ -0,0 +1,23 @@
+import { ComponentFixture, TestBed } from '@angular/core/testing';
+
+import { FlowsList } from './flows-list';
+
+describe('FlowsList', () => {
+  let component: FlowsList;
+  let fixture: ComponentFixture<FlowsList>;
+
+  beforeEach(async () => {
+    await TestBed.configureTestingModule({
+      imports: [FlowsList]
+    })
+    .compileComponents();
+
+    fixture = TestBed.createComponent(FlowsList);
+    component = fixture.componentInstance;
+    await fixture.whenStable();
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+});
diff --git a/src/app/shared/flows-list/flows-list.ts b/src/app/shared/flows-list/flows-list.ts
new file mode 100644
index 0000000..fcae93c
--- /dev/null
+++ b/src/app/shared/flows-list/flows-list.ts
@@ -0,0 +1,35 @@
+import { CommonModule } from '@angular/common';
+import { Component, inject } from '@angular/core';
+import { Flow } from '@models/flow';
+import { EditorStateHolder } from 'app/stores/editor';
+
+type FlowFilter = 'all' | 'public' | 'private';
+
+@Component({
+  selector: 'app-flows-list',
+  imports: [CommonModule],
+  templateUrl: './flows-list.html',
+  styleUrl: './flows-list.css',
+})
+export class FlowsList {
+  filter: FlowFilter = 'all';
+
+  private editorState = inject(EditorStateHolder);
+
+  flows : Flow[] = [
+    { id: '1', name: 'Flow One', visibility: 'public', data: {} },
+    { id: '2', name: 'Flow Two', visibility: 'private', data: {} },
+    { id: '3', name: 'Flow Three', visibility: 'public', data: {} },
+    { id: '4', name: 'Flow Four', visibility: 'private', data: {} },
+  ]
+
+  get filteredFlows() {
+    if (this.filter === 'all') return this.flows;
+    return this.flows.filter(f => f.visibility === this.filter);
+  }
+
+  open(flow: Flow) {
+    console.log('Opening flow:', flow);
+    this.editorState.openDocument(flow);
+  }
+}
diff --git a/src/app/stores/editor.spec.ts b/src/app/stores/editor.spec.ts
new file mode 100644
index 0000000..57a1234
--- /dev/null
+++ b/src/app/stores/editor.spec.ts
@@ -0,0 +1,16 @@
+import { TestBed } from '@angular/core/testing';
+
+import { Editor } from './editor';
+
+describe('Editor', () => {
+  let service: Editor;
+
+  beforeEach(() => {
+    TestBed.configureTestingModule({});
+    service = TestBed.inject(Editor);
+  });
+
+  it('should be created', () => {
+    expect(service).toBeTruthy();
+  });
+});
diff --git a/src/app/stores/editor.ts b/src/app/stores/editor.ts
new file mode 100644
index 0000000..b8fa857
--- /dev/null
+++ b/src/app/stores/editor.ts
@@ -0,0 +1,46 @@
+import { computed, Injectable, signal } from '@angular/core';
+import { Flow } from '@models/flow';
+import { ConfirmDialogService } from '@services/dialogs/confirm-dialog';
+
+@Injectable({ providedIn: 'root' })
+export class EditorStateHolder {
+
+  /** Stato */
+  readonly currentFlow = signal<Flow | null>(null);
+  readonly isDirty = signal(false);
+
+  /** Derived state */
+  readonly hasFlow = computed(() => !!this.currentFlow());
+
+  constructor(private confirm: ConfirmDialogService) { }
+
+  /** Intent: open document */
+  async openDocument(doc: Flow): Promise<boolean> {
+    const confirmed = await this.confirm.open(
+      'You have unsaved changes. Open another document?'
+    );
+
+    if (!confirmed) return false;
+
+
+    this.currentFlow.set(doc);
+    this.isDirty.set(false);
+    return true;
+  }
+
+  /** Intent: mark editor dirty */
+  markDirty() {
+    this.isDirty.set(true);
+  }
+
+  /** Intent: save document */
+  markSaved() {
+    this.isDirty.set(false);
+  }
+
+  /** Intent: close document */
+  closeDocument() {
+    this.currentFlow.set(null);
+    this.isDirty.set(false);
+  }
+}