Flex 4 & Flash Builder 4权威指南：跨平台Web应用开发秘籍

Flash.Builder.4.&.Flex.4.宝典

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《Flash Builder 4 & Flex 4 宝典》是一本由 David Gassner 所著的专业教程，全面介绍了 Adobe Flash Builder 4 和 Flex 4 开发工具集。这本书旨在帮助开发者掌握 Flex 4 SDK 的所有工具，并探讨如何有效地将其与 BlazeDS（Adobe 的企业级数据服务框架）、ColdFusion 和 PHP 等后端技术集成，以便快速构建跨平台的 Web 应用程序。在本书中，读者可以找到详尽的项目代码示例，这些示例涵盖了书中的各种实践场景，便于理解和应用。同时，配套的网站提供了有用的链接和其他额外资源，为学习者提供了丰富的学习支持。《Flash Builder 4 & Flex 4 宝典》不仅是初学者入门这两款工具的指南，也是高级开发者提升技能、探索新特性的实用手册。作者 David Gassner 是这一领域的权威专家，他的著作以其深度和实用性著称。书中不仅讲解了 Flex 4 和 Flash Builder 4 的基础概念和技术，还深入剖析了如何利用这些工具进行高效开发，包括构建组件、数据绑定、异步编程以及与服务器端的交互等关键环节。版权信息表明，该书由 Wiley Publishing, Inc. 出版，享有2010年的版权，并强调未经许可不得复制、存储或以任何形式传播，除非符合美国1976年版权法的第107节或108节的规定。该书的国际标准书号(ISBN)为978-0-470-48895-9，表明这是全球范围内的一部专业出版物。《Flash Builder 4 & Flex 4 宝典》是学习和精通这两款流行前端开发工具的不可或缺资源，无论是希望入门的开发者还是寻求技术进阶的工程师，都能从中获得宝贵的知识和实战经验。通过阅读这本书，读者将能够熟练掌握开发过程中的各个环节，为构建高性能、跨平台的 Web 应用打下坚实的基础。

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Contents

Chapter 11: Using Cascading Style Sheets....................... 341

About Cascading Style Sheets ............................................................................................341

What Is a Style Sheet? .......................................................................................................343

Using Inline Style Declarations ..........................................................................................344

Declaring Style Sheets with <fx:Style> ...............................................................................345

Using Style Selectors .........................................................................................................346

Using type selectors .................................................................................................346

Using descendant selectors ......................................................................................350

Using style name selectors .......................................................................................351

Using ID selectors ...................................................................................................352

Using the global selector .........................................................................................352

Using Embedded Style Sheets ...........................................................................................353

Using External Style Sheets ...............................................................................................356

Creating a blank style sheet .....................................................................................356

Exporting existing styles ..........................................................................................359

Using Compiled Style Sheets .............................................................................................363

Compiling style sheets .............................................................................................363

Loading compiled style sheets .................................................................................363

Controlling Styles with ActionScript .................................................................................366

Setting and getting style information .......................................................................366

Modifying style selectors at runtime ........................................................................367

Summary ..........................................................................................................................370

Chapter 12: Controlling Animation and

Working with Drag and Drop................................. 371

Using Effects .....................................................................................................................372

Declaring and playing effect classes .........................................................................373

Declaring effects in ActionScript ..............................................................................375

Using the new Spark effects .....................................................................................377

Using composite effects ...........................................................................................383

Using easing classes .................................................................................................387

Using Drag-and-Drop Operations .....................................................................................388

Implementing drag-and-drop with List controls ......................................................389

Implementing custom drag-and-drop operations ....................................................391

Summary ..........................................................................................................................398

Chapter 13: Managing View States............................. 399

Understanding View States ................................................................................................400

Defining View States in Design View .................................................................................401

Creating a new state ................................................................................................401

Defining a view state’s overrides ..............................................................................404

Switching View States at Runtime .....................................................................................406

Declaring View States in MXML ........................................................................................407

Adding and removing components ..........................................................................408

Overriding properties, styles, and event handlers ....................................................409

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Contents

Managing View States in Components ..............................................................................412

Using Transitions ..............................................................................................................414

Declaring a transition ..............................................................................................414

Using Parallel and Sequence effects in transitions ....................................................415

Summary ..........................................................................................................................418

Chapter 14: Declaring Graphics with MXML and FXG ............... 419

Declaring Vector Graphics in MXML .................................................................................420

Drawing lines and shapes ........................................................................................420

Adding visual effects ...............................................................................................425

Using FXG Files ................................................................................................................432

Creating FXG graphics with Creative Suite software ................................................432

Using FXG files in Flex applications ........................................................................439

Summary ..........................................................................................................................442

Chapter 15: Skinning Spark Components ........................ 443

Creating and Using Spark Custom Skins ...........................................................................444

Skinning a Spark application ...................................................................................444

Binding a custom skin to a Spark component ..........................................................451

Skinning Other Spark Components ..................................................................................455

Creating a new skin .................................................................................................455

Assigning custom skins with CSS ............................................................................461

Customizing the skin ..............................................................................................462

Summary ..........................................................................................................................467

Chapter 16: Managing Application Navigation.................... 469

Understanding Classic Web Navigation ............................................................................470

Understanding Flex Navigation .........................................................................................471

Using Navigator Containers ..............................................................................................471

Declaring a ViewStack in MXML .............................................................................472

Using custom components in a navigator container .................................................472

Creating a ViewStack in Design mode .....................................................................473

Working with navigator containers in ActionScript .................................................477

Managing creation policy ........................................................................................482

Managing navigator container dimensions ...............................................................484

Using Navigator Bar Containers ........................................................................................484

Using a data collection as a dataProvider .................................................................485

Handling navigator bar events .................................................................................487

Using a ViewStack as a dataProvider .......................................................................487

Managing navigator bar presentation .......................................................................488

Using Menu Controls ........................................................................................................491

Menu data providers ...............................................................................................492

Handling menu events ............................................................................................493

Using the Menu control ...........................................................................................494

Using the MenuBar control......................................................................................495

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Using Other Navigator Containers ....................................................................................497

The TabNavigator container ....................................................................................498

The Accordion container .........................................................................................500

TabNavigator and Accordion keyboard shortcuts ....................................................501

Summary ..........................................................................................................................502

Chapter 17: Working with Pop-up Windows ..................... 503

Using the Alert Class .........................................................................................................504

Presenting pop-up windows with Alert.show() ........................................................504

Controlling Alert window modality .........................................................................504

Managing Alert window buttons .............................................................................506

Handling Alert window events ................................................................................508

Using a custom graphical icon .................................................................................509

Using CSS selectors with the Alert class ...................................................................512

Using the PopUpMenuButton Control ..............................................................................514

Creating a data provider ..........................................................................................514

Handling events ......................................................................................................515

Using the PopUpButton control ........................................................................................517

Declaring the pop-up window .................................................................................518

Handling events and managing pop-up behavior ....................................................518

Working with Custom Pop-up Windows ..........................................................................521

Defining a custom pop-up window .........................................................................521

Managing custom pop-up windows with the PopUpManager class..........................524

Summary ..........................................................................................................................530

Part III: Working with Data 531

Chapter 18: Modeling and Managing Data ....................... 533

Creating a Data Model ......................................................................................................534

Using the <fx:Model> element .................................................................................535

Using Value Objects ..........................................................................................................539

Using the New ActionScript Class wizard ................................................................540

Value object class syntax .........................................................................................541

Instantiating value object classes .............................................................................549

Using Data Collections ......................................................................................................552

Declaring an ArrayCollection...................................................................................553

Setting a data collection object’s source property .....................................................554

Accessing data at runtime ........................................................................................555

Managing data at runtime ........................................................................................556

Using data cursors ...................................................................................................562

Summary ..........................................................................................................................569

Chapter 19: Using List Controls ............................... 571

Using Data Providers .........................................................................................................574

Using hard-coded data providers ............................................................................575

Using dynamic data providers .................................................................................577

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Contents

Controlling List Item Labels ..............................................................................................579

Using the labelField property ..................................................................................579

Using the labelFunction property ............................................................................582

List Control Events and Properties ....................................................................................584

Handling User Data Selections ..........................................................................................585

Using the change event ...........................................................................................585

Using the selectedItem property ..............................................................................585

Using the selectedIndex property ............................................................................587

Selecting complex data objects ................................................................................588

Using Custom Item Renderers ...........................................................................................590

Using drop-in item renderers ..................................................................................591

Using inline renderers and editors ...........................................................................593

Using component item renderers ............................................................................597

Customizing Spark item renderers with view states .................................................600

Summary ..........................................................................................................................602

Chapter 20: Using Advanced List Controls....................... 603

Using ComboBox and DropDownList Controls .................................................................603

Using the prompt property ......................................................................................604

Using the ComboBox control ..................................................................................605

Selecting complex data objects with ActionScript ....................................................607

Using the Spark ButtonBar control ..........................................................................611

Using the DataGrid Control ..............................................................................................613

Customizing the DataGrid display ...........................................................................614

Displaying custom labels in DataGrid column cells .................................................619

Advanced Item Renderers and Editors ..............................................................................622

Using the dataChange event ....................................................................................623

Using Spark item renderers .....................................................................................626

Using item editors ...................................................................................................627

Using List Controls with Horizontal and Tile Layout .........................................................635

Using the AdvancedDataGrid Control ...............................................................................641

Hierarchical data display .........................................................................................641

Grouping flat data ...................................................................................................644

Summary ..........................................................................................................................646

Chapter 21: Using the Flex Charting Controls .................... 647

Understanding Flex’s Types of Charts ...............................................................................648

Declaring Chart Controls ..................................................................................................650

Setting Chart Properties and Styles ....................................................................................652

Using pie charts ......................................................................................................652

Using financial charts ..............................................................................................663

Using bar, column, line, and area charts ..................................................................666

Summary ..........................................................................................................................673

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Chapter 22: Working with Data Entry Forms ...................... 675

Using the Form Container .................................................................................................676

Using the FormHeading control ..............................................................................678

Using the FormItem container .................................................................................680

Setting a default button ...........................................................................................681

Using Custom Form Components .....................................................................................683

Creating a custom Form component .......................................................................683

Adding controls to a Form component ....................................................................685

Validating Data Entry ........................................................................................................687

Creating a validator object .......................................................................................688

Controlling validation with trigger events ................................................................688

Controlling validation with ActionScript .................................................................691

Controlling validation rules and error messages ......................................................695

Sharing Data with the Application .....................................................................................697

Modeling Form data with a value object ..................................................................697

Dispatching a custom event .....................................................................................699

Summary ..........................................................................................................................705

Chapter 23: Working with HTTPService and XML .................. 707

Using RPC and REST Architectures ...................................................................................708

Understanding the Representational State Transfer architecture ..............................708

Understanding the Remote Procedure Call architecture ...........................................709

Creating Data-Centric Applications with Flash Builder 4...................................................710

Creating and managing data connections ................................................................710

Defining a return data type ......................................................................................714

Binding returned data to visual controls ..................................................................719

Declaring and Configuring HTTPService Objects ..............................................................722

Creating an HTTPService object ..............................................................................722

Essential HTTPService properties ............................................................................723

Sending and Receiving Data ..............................................................................................727

Understanding asynchronous communications .......................................................727

Handling HTTPService responses ............................................................................727

Working with CallResponder and AsyncToken .......................................................736

Working with ItemResponder and AsyncToken ......................................................739

Working with Value Objects .............................................................................................741

Passing Parameters to Server Pages ....................................................................................744

Using named parameters .........................................................................................744

Using bound parameters .........................................................................................745

Handling Cross-Domain Policy Issues ...............................................................................746

Summary ..........................................................................................................................748

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