Mastering Dart电子书

Mastering Dart

Table of Contents

Mastering Dart

Credits

About the Author

About the Reviewers

www.PacktPub.com

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Preface

What this book covers

What you need for this book

Who this book is for

Conventions

Reader feedback

Customer support

Downloading the example code

Errata

Piracy

Questions

1. Beyond Dart's Basics

Modularity and a namespace

Modularity in software development

Modularity in Dart

Libraries

Functions and closures in different scopes

Naming functions with a variable

Passing a function as an argument to another function

Returning a function as a result of another function

Storing a function in data structures

Closures

Classes and mixins

Types

Classes

Inheritance

Interface

Mixins

Well-designed classes

To be private or not

Variables versus the accessor methods

Inheritance versus composition

Methods and operators

Checking the values of the parameters before using them

Well-designed methods

Summary

2. Advanced Techniques and Reflection

Generics

Raw types

Using generics

Generic types

Generic functions

Errors versus exceptions

Errors

Exceptions

Annotations

Built-in annotations

Deprecated

Override

Proxy

Custom annotations

Reflection

Introspection in action

Reflection in action

Summary

3. Object Creation

Creating an object

A generative constructor

A constructor with optional parameters

A named constructor

A redirecting constructor

A private constructor

A factory constructor

The factory method design pattern

The singleton design pattern

A constant constructor

Initializing variables

Syntactic sugar

Method call

Cascade method invocation

Summary

4. Asynchronous Programming

Call-stack architectures versus event-driven architectures

Call-stack architectures

Event-driven architectures

The Dart VM execution model

Synchronous versus Asynchronous code

Future

Future and Timer

Future and Microtask

Sync the Future class

Future with a value

Future with an error

Delaying the Future class

Zones

Simple zone example

Zone nesting

Zone values

Zone specifications

Interaction between zones

Tracking the zone execution

Isolates

Summary

5. The Stream Framework

Why you should use streams

Single-subscription streams versus broadcast streams

A single-subscription stream

A broadcast stream

An overview of the stream framework API

The Stream class

The validation methods of the Stream class

The search methods of the Stream class

The subset methods of the Stream class

Creating a stream

A new stream from the Future class

A new stream from the Iterable class

A new stream with periodically generated events

A new stream from the transformation pipe

A new stream from StreamController

What does the StreamSubscription class do?

Minimizing access to the Stream class members using StreamView

The Sink and EventSink interfaces

Importance of the StreamConsumer interface

What does the StreamSink class do?

Transforming streams with the StreamTransformer class

Traverse streams with StreamIterator

Summary

6. The Collection Framework

A Dart collection framework

Ordering of elements

The Comparable interface

The Comparator type

Collections and generics

The collection class hierarchy

The Iterable interface

Properties of the Iterable collection

Checking the items of a collection on a condition

The iterate over collection

The search over collection

Creating a new collection

Reducing a collection

Converting a collection

Generating a collection

The Lazy Iterable

The Iterable interface

BidirectionalIterator

The collection classes

List

LinkedList

Set

HashSet

LinkedHashSet

SplayTreeSet

Queue

Map

HashMap

LinkedHashMap

SplayTreeMap

Unmodifiable collections

The unmodifiable list

The unmodifiable map

Choosing the right collection

Summary

7. Dart and JavaScript Interoperation

Interoperation at a glance

The dart:js library

JsObject

JsFunction

JsArray

Type conversion

Direct type conversion

Proxy type conversion

Collection conversion

JsObject and instantiation

JsFunction and the this keyword

Dart with jQuery

How to create a shortcut to jQuery

Why does JProxy need a method call?

How does JProxy invoke jQuery?

An example project

How to get the jQuery version

How to perform actions in jQuery

How to use effects in jQuery

What is the impact on performance?

Summary

8. Internalization and Localization

The key principles

Executable code versus User Interface

Numbers and dates

Messages

Measuring units and currencies

Text input and layout

Formatting date and time

The Intl library

Changing a locale

Formatting numbers

Formatting dates

Internalizing messages

Adding parentheses

Adding gender

Adding select

Creating complex message translations

Bidirectional formatting

Internationalizing your web application

Extracting messages

Using Google Translator Toolkit

Using translated messages

Summary

9. Client-to-server Communication

Communication at a glance

The Internet protocol stack

Hypertext Transfer Protocol

Web server

Standalone HTTP communication via the dart:io library

Standalone HTTP communication via the http package

Web browser HTTP communication via the dart:html library

Web browser HTTP communication via the http package

AJAX polling request

AJAX long polling request

Server-Sent Events

WebSocket

Summary

10. Advanced Storage

Cookies

Web Storage

The Session storage

The Local storage

Web SQL

IndexedDB

Summary

11. Supporting Other HTML5 Features

The notification APIs

When to notify

Preventing repeated notifications

The native drag-and-drop APIs

Draggable content

The drag-and-drop events

Dragging data

Dragging the feedback image

Dragging effects

The drop target

Finishing a drop

Finishing a drag

The geolocation APIs

Determining the current location

Geolocation on maps

Tracking the present location

Canvas

Example – the canvas editor

Beginning with HTML

Moving to the main function

The CanvasWidget component

The ToolSelector widget

The ColorSelector widget

The Tool class

The Pen tool

The Line tool

The Rectangle tool

The Oval tool

How to clear the context

How to preview the context

Summary

12. Security Aspects

Web security

Transport Layer Security and Secure Socket Layer at a glance

The TLS certificate

Securing a server

Securing a client

Attributes of cookies

HTTP Strict Transport Security

Content Security Policy

Cross Origin Resource Sharing versus JSON with padding

CAPTCHA

Security best practices

Summary

Index