From 63c0c186b9d610ec86622beea6f6333c233c23ec Mon Sep 17 00:00:00 2001
From: Lucas Oude Vrielink <luoud@odoo.com>
Date: Fri, 19 Jun 2026 09:22:46 +0200
Subject: [PATCH 1/3] [ADD] awesome_owl: chapter 1.1  & 1.2

---
 awesome_owl/static/src/counter/counter.js  | 13 +++++++++++++
 awesome_owl/static/src/counter/counter.xml | 11 +++++++++++
 awesome_owl/static/src/playground.js       |  2 ++
 awesome_owl/static/src/playground.xml      |  2 ++
 4 files changed, 28 insertions(+)
 create mode 100644 awesome_owl/static/src/counter/counter.js
 create mode 100644 awesome_owl/static/src/counter/counter.xml

diff --git a/awesome_owl/static/src/counter/counter.js b/awesome_owl/static/src/counter/counter.js
new file mode 100644
index 00000000000..e65eaed4428
--- /dev/null
+++ b/awesome_owl/static/src/counter/counter.js
@@ -0,0 +1,13 @@
+import { Component, useState } from "@odoo/owl";
+
+export class Counter extends Component {
+    static template = "awesome_owl.counter";
+
+    setup() {
+        this.state = useState({ value: 0 });
+    }
+
+    increment() {
+        this.state.value++
+    }
+}
diff --git a/awesome_owl/static/src/counter/counter.xml b/awesome_owl/static/src/counter/counter.xml
new file mode 100644
index 00000000000..f20e162d294
--- /dev/null
+++ b/awesome_owl/static/src/counter/counter.xml
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<templates xml:space="preserve">
+
+    <t t-name="awesome_owl.counter">
+        <div class="p-3">
+            <p>Counter: <t t-esc="state.value"/></p>
+            <button class="btn btn-primary" t-on-click="increment">Increment</button>
+        </div>
+    </t>
+
+</templates>
diff --git a/awesome_owl/static/src/playground.js b/awesome_owl/static/src/playground.js
index 4ac769b0aa5..454e48d8898 100644
--- a/awesome_owl/static/src/playground.js
+++ b/awesome_owl/static/src/playground.js
@@ -1,5 +1,7 @@
 import { Component } from "@odoo/owl";
+import { Counter } from "./counter/counter";
 
 export class Playground extends Component {
     static template = "awesome_owl.playground";
+    static components = { Counter };
 }
diff --git a/awesome_owl/static/src/playground.xml b/awesome_owl/static/src/playground.xml
index 4fb905d59f9..e1471b846c8 100644
--- a/awesome_owl/static/src/playground.xml
+++ b/awesome_owl/static/src/playground.xml
@@ -5,6 +5,8 @@
         <div class="p-3">
             hello world
         </div>
+        <Counter/>
+        <Counter/>
     </t>
 
 </templates>

From c4361af3a959443c8f37c81420379e2eeb65077b Mon Sep 17 00:00:00 2001
From: Lucas Oude Vrielink <luoud@odoo.com>
Date: Fri, 19 Jun 2026 09:46:09 +0200
Subject: [PATCH 2/3] [ADD] awesome_owl: chapter 1.3

---
 awesome_owl/static/src/card/card.js   | 12 ++++++++++++
 awesome_owl/static/src/playground.js  |  3 ++-
 awesome_owl/static/src/playground.xml |  2 ++
 3 files changed, 16 insertions(+), 1 deletion(-)
 create mode 100644 awesome_owl/static/src/card/card.js

diff --git a/awesome_owl/static/src/card/card.js b/awesome_owl/static/src/card/card.js
new file mode 100644
index 00000000000..2e3787f041f
--- /dev/null
+++ b/awesome_owl/static/src/card/card.js
@@ -0,0 +1,12 @@
+import { Component, xml } from "@odoo/owl";
+
+export class Card extends Component {
+    static template = xml`
+        <div class="card d-inline-block m-2" style="width: 18rem;">
+            <div class="card-body">
+                <h5 class="card-title"><t t-esc="props.title"/></h5>
+                <p class="card-text"><t t-esc="props.content"/></p>
+            </div>
+        </div>
+    `;
+}
diff --git a/awesome_owl/static/src/playground.js b/awesome_owl/static/src/playground.js
index 454e48d8898..dae12a5231a 100644
--- a/awesome_owl/static/src/playground.js
+++ b/awesome_owl/static/src/playground.js
@@ -1,7 +1,8 @@
 import { Component } from "@odoo/owl";
 import { Counter } from "./counter/counter";
+import { Card } from "./card/card";
 
 export class Playground extends Component {
     static template = "awesome_owl.playground";
-    static components = { Counter };
+    static components = { Counter, Card };
 }
diff --git a/awesome_owl/static/src/playground.xml b/awesome_owl/static/src/playground.xml
index e1471b846c8..10862c79372 100644
--- a/awesome_owl/static/src/playground.xml
+++ b/awesome_owl/static/src/playground.xml
@@ -7,6 +7,8 @@
         </div>
         <Counter/>
         <Counter/>
+        <Card title="'test'" content="'test'"/>
+        <Card title="'Card 2'" content="'Content of card 2'"/>
     </t>
 
 </templates>

From 7ba23df8cf4a7361d0d505ac2a536f1701beb5f7 Mon Sep 17 00:00:00 2001
From: Lucas Oude Vrielink <luoud@odoo.com>
Date: Mon, 22 Jun 2026 11:11:37 +0200
Subject: [PATCH 3/3] [ADD] awesome_owl: chapter 1 done

---
 awesome_owl/static/src/card/card.js           | 32 ++++++++++++++--
 awesome_owl/static/src/counter/counter.js     |  8 ++++
 awesome_owl/static/src/playground.js          | 19 +++++++++-
 awesome_owl/static/src/playground.xml         | 18 +++++++--
 awesome_owl/static/src/todo_list/todo_item.js | 21 ++++++++++
 .../static/src/todo_list/todo_item.xml        | 13 +++++++
 awesome_owl/static/src/todo_list/todo_list.js | 38 +++++++++++++++++++
 .../static/src/todo_list/todo_list.xml        | 12 ++++++
 8 files changed, 152 insertions(+), 9 deletions(-)
 create mode 100644 awesome_owl/static/src/todo_list/todo_item.js
 create mode 100644 awesome_owl/static/src/todo_list/todo_item.xml
 create mode 100644 awesome_owl/static/src/todo_list/todo_list.js
 create mode 100644 awesome_owl/static/src/todo_list/todo_list.xml

diff --git a/awesome_owl/static/src/card/card.js b/awesome_owl/static/src/card/card.js
index 2e3787f041f..a85367bb527 100644
--- a/awesome_owl/static/src/card/card.js
+++ b/awesome_owl/static/src/card/card.js
@@ -1,12 +1,38 @@
-import { Component, xml } from "@odoo/owl";
+import { Component, xml, useState } from "@odoo/owl";
 
 export class Card extends Component {
     static template = xml`
         <div class="card d-inline-block m-2" style="width: 18rem;">
             <div class="card-body">
-                <h5 class="card-title"><t t-esc="props.title"/></h5>
-                <p class="card-text"><t t-esc="props.content"/></p>
+                
+                <div class="d-flex justify-content-between align-items-center mb-3">
+                    <h5 class="card-title mb-0"><t t-esc="props.title"/></h5>
+                    <button class="btn btn-sm btn-outline-primary" t-on-click="toggle">
+                        <t t-if="state.isOpen">Hide</t>
+                        <t t-else="">Show</t>
+                    </button>
+                </div>
+                
+                <div t-if="state.isOpen">
+                    <t t-slot="default"/>
+                </div>
+                
             </div>
         </div>
     `;
+
+    static props = {
+        title: { type: String },
+        slots: { type: Object, optional: true }
+    };
+
+    setup() {
+        this.state = useState({
+            isOpen: true
+        });
+    }
+
+    toggle() {
+        this.state.isOpen = !this.state.isOpen;
+    }
 }
diff --git a/awesome_owl/static/src/counter/counter.js b/awesome_owl/static/src/counter/counter.js
index e65eaed4428..f3cac2e0f4b 100644
--- a/awesome_owl/static/src/counter/counter.js
+++ b/awesome_owl/static/src/counter/counter.js
@@ -9,5 +9,13 @@ export class Counter extends Component {
 
     increment() {
         this.state.value++
+
+        if (this.props.onChange) {
+            this.props.onChange();
+        }
+    }
+
+    static props = {
+        onChange: { type: Function, optional: true }
     }
 }
diff --git a/awesome_owl/static/src/playground.js b/awesome_owl/static/src/playground.js
index dae12a5231a..0e7579cb203 100644
--- a/awesome_owl/static/src/playground.js
+++ b/awesome_owl/static/src/playground.js
@@ -1,8 +1,23 @@
-import { Component } from "@odoo/owl";
+import { Component, markup, useState } from "@odoo/owl";
 import { Counter } from "./counter/counter";
 import { Card } from "./card/card";
+import { TodoList } from "./todo_list/todo_list";
 
 export class Playground extends Component {
     static template = "awesome_owl.playground";
-    static components = { Counter, Card };
+    static components = { Counter, Card, TodoList };
+
+    setup() {
+        const productDescriptionFromDB = "<p>This is a <strong>great</strong> product!</p>";
+        this.description = markup(productDescriptionFromDB);
+        this.sum = useState({ value: 0 });
+
+        this.someExpression = () => {
+            return true;
+        }
+    }
+
+    incrementSum() {
+        this.sum.value++;
+    }
 }
diff --git a/awesome_owl/static/src/playground.xml b/awesome_owl/static/src/playground.xml
index 10862c79372..31daad927b1 100644
--- a/awesome_owl/static/src/playground.xml
+++ b/awesome_owl/static/src/playground.xml
@@ -5,10 +5,20 @@
         <div class="p-3">
             hello world
         </div>
-        <Counter/>
-        <Counter/>
-        <Card title="'test'" content="'test'"/>
-        <Card title="'Card 2'" content="'Content of card 2'"/>
+        <Counter onChange.bind="incrementSum"/>
+        <Counter onChange.bind="incrementSum"/>
+        <div class="mt-3 font-weight-bold">
+            Total Sum: <t t-esc="sum.value"/>
+        </div>
+        <Card title="'test'">   
+            <p class="card-text">test</p>
+            <div>description</div>
+        </Card>
+        <Card title="'Card 2'">
+            <p>Content of card 2</p>
+            <Counter onChange.bind="incrementSum"/>
+        </Card>
+        <TodoList/>
     </t>
 
 </templates>
diff --git a/awesome_owl/static/src/todo_list/todo_item.js b/awesome_owl/static/src/todo_list/todo_item.js
new file mode 100644
index 00000000000..3d8ce1cfdff
--- /dev/null
+++ b/awesome_owl/static/src/todo_list/todo_item.js
@@ -0,0 +1,21 @@
+import { Component, useState } from "@odoo/owl";
+
+export class TodoItem extends Component {
+    static template = "awesome_owl.todo_item";
+    static props = {
+        id: { type: Number },
+        description: { type: String },
+        isCompleted: { type: Boolean }
+    };
+
+    onChange() {
+        this.state.isCompleted = !this.state.isCompleted;
+    }
+
+    setup() {
+        this.state = useState({
+            isCompleted: this.props.isCompleted
+        })
+    }
+
+};
diff --git a/awesome_owl/static/src/todo_list/todo_item.xml b/awesome_owl/static/src/todo_list/todo_item.xml
new file mode 100644
index 00000000000..125cd4addd0
--- /dev/null
+++ b/awesome_owl/static/src/todo_list/todo_item.xml
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<templates xml:space="preserve">
+
+    <t t-name="awesome_owl.todo_item">
+        <div class="p-3" t-att-class="{ 'text-decoration-line-through': state.isCompleted }" >
+            <input class="form-check-input" type="checkbox" t-att-id="props.id" t-att-checked="state.isCompleted" t-on-change="onChange"/>
+            <p>ID: <t t-esc="props.id"/></p>
+            <p t-att-class="props.isCompleted ? 'text-decoration-line-through text-muted' : '' " >Description: <t t-esc="props.description"/></p>
+            <p>Completed: <t t-esc="state.isCompleted"/></p>
+        </div>
+    </t>
+
+</templates>
diff --git a/awesome_owl/static/src/todo_list/todo_list.js b/awesome_owl/static/src/todo_list/todo_list.js
new file mode 100644
index 00000000000..f1ae60b87bd
--- /dev/null
+++ b/awesome_owl/static/src/todo_list/todo_list.js
@@ -0,0 +1,38 @@
+import { Component, useState, onMounted, useRef } from "@odoo/owl";
+import { TodoItem } from "./todo_item";
+
+export class TodoList extends Component {
+    static template = "awesome_owl.todo_list";
+    static components = { TodoItem };
+
+    setup() {
+        this.nextId = 0;
+        this.todos = useState([]);
+
+        this.inputRef = useRef("input"); 
+        onMounted(() => {
+            this.inputRef.el.focus(); 
+        });
+    }
+
+    addTodo(ev) {
+        if (ev.keyCode === 13 && ev.target.value != "") {
+            this.todos.push(
+                {
+                    "id": this.nextId++,
+                    "description": ev.target.value,
+                    "isCompleted": false
+                }
+            )
+            ev.target.value = "";
+        }
+    }
+
+    delete(todoId) {
+        const index = this.todos.findIndex((todo) => todo.id === todoId);
+        if (index !== -1) {
+            this.todos.splice(index, 1);
+        }
+    }
+
+}
diff --git a/awesome_owl/static/src/todo_list/todo_list.xml b/awesome_owl/static/src/todo_list/todo_list.xml
new file mode 100644
index 00000000000..d007b83f232
--- /dev/null
+++ b/awesome_owl/static/src/todo_list/todo_list.xml
@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<templates xml:space="preserve">
+
+    <t t-name="awesome_owl.todo_list">
+        <input class="form-control mb-3" type="text" placeholder="Add a todo" t-on-keyup="addTodo" t-ref="input"/>
+        <div t-foreach="todos" t-as="i" t-key="i.id">
+            <TodoItem id="i.id" description="i.description" isCompleted="i.isCompleted"/>
+            <span class="fa fa-remove" t-on-click="() => this.delete(i.id)" style="cursor: pointer;" />
+        </div>
+    </t>
+
+</templates>