8. Practical – Questionnaire Component | Ext JS Application Development Blueprints

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Ext JS Application Development Blueprints

By : Ramsay

4 (1)

Ext JS Application Development Blueprints

4 (1)

By: Ramsay

Overview of this book

If you are a developer who has knowledge of Ext JS but would like to expand it to encompass the bigger picture of application development, then this book is ideal for you.

Preface

Preface

What this book covers

What you need for this book

Who this book is for

Conventions

Reader feedback

Customer support

Free Chapter

1. Introduction

1. Introduction

Humble beginnings

What is application architecture?

Ext JS

Getting ready

In safe hands

Summary

2. MVC and MVVM

2. MVC and MVVM

Diary of always

Bringing MVC to the Web

Ext JS and MVC

How does it help your application

MVC and the illusion of choice

Introducing MVVM

An event domain example

Summary

3. Application Structure

3. Application Structure

Ideas for structure

Getting to know your application

Cultivating your code

The solution to pollution

Summary – mind your own beeswax

4. Sencha Cmd

4. Sencha Cmd

What is Sencha Cmd?

Why is it important?

Setting up your application

The generation game

Develop in style

Care for the environment

Before the build

Code complete

The best of the rest

Summary

5. Practical – a CMS Application

5. Practical – a CMS Application

A content-managed system

The requirements

Starting at the bottom

Work your way up

Where the wild things are

The real deal

Creating a structure

Data-driven design

A room with a view

Summary

6. Practical – Monitoring Dashboard

6. Practical – Monitoring Dashboard

Application design

Requirements

Data structure

The view from the top

Flexibility and pragmatism

Does this hurt?

Onwards and upwards

Data first

Storing the data

With a view to a controller

The main view controller

The dashboard

The dashboard view model

The dashboard view controller

Web logs subpage

A view on the Web

Controlling the Web

More and more subpages

Summary

7. Practical – an E-mail Client

7. Practical – an E-mail Client

Form factors

Application design

I require to admire

Responding to the situation

Input required

A view to a thrill

Application state

A binding agreement

An eventful application

Coding – it's been a long time

It's under control

Login view

Main force

The head of the family

Unravel the thread

I am the best message

A composed finish

Deciding on a theme

Summary

8. Practical – Questionnaire Component

8. Practical – Questionnaire Component

Application design – my way

Data structure

Data flow

Sketchy sketching

Get set

The data layer

The payload

The wizard component

One step forward

Making progress

Step by step

Questionnaire command and control

The wizard model

A delightful host

Mixin the night away

Summary

9. A Shopping Application

9. A Shopping Application

About the app

Back to Ext JS

The data layer

Component interaction

The simplicity of view models

Code, code, and more code

Interface in your face

Categorically speaking

Product placement

A basket case

The account window

Summary

10. Debugging and Performance

10. Debugging and Performance

In-browser debugging

Breaking and busting

Performance in Ext JS

Quick on the draw

Analyzing performance

Summary

11. Application Testing

11. Application Testing

Total testing

Testing tool time with Jasmine

Testing with robots

Testability

Faking it with mocks

Continuous coverage

Summary

Index

Index

Get set

The questionnaire component that we'll build in this chapter will be reusable in any application. To that end, we can use an Ext JS package to create a bundle of code that can be built in the same way as a normal Ext JS application, but it can be incorporated as a component in our future applications. We discussed packages in Chapter 3, Application Structure, but now we'll see how they can be used in practice.

Here's how I started up the project that I used as a basis for this component and its test application:

sencha generate workspace ./questionnaire-space
cd questionnaire-space
sencha generate package wizard
sencha -sdk ~/Downloads/ext-5.0.1 generate app Questions ./questions

Building a package requires us to first create a workspace, so after doing so using the latest version of the SDK that I downloaded, I moved on to the workspace directory and issued the command to create the package itself, which I called wizard. Then, I created a test application that would host the package...

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