"深入研究Eclipse-4-RCP教程：架构、核心组件和开发工具包下载"

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Eclipse-4-RCP教程是一个关于Eclipse Rich Client Platform（RCP）的教程，由Lars Vogel编写。本教程包含多个部分，包括Eclipse RCP应用程序的简介、基于Eclipse的应用程序架构、Eclipse平台的核心组件等。学习者可以通过本教程了解如何开发基于Eclipse的应用程序，并掌握相关的核心概念和技术。在"Eclipse-4-RCP教程"中，首先介绍了Eclipse RCP应用程序的概念和特点。Eclipse RCP是一种用于创建基于Eclipse平台的富客户端应用程序的框架。与传统的Web应用程序相比，RCP应用程序更加灵活和强大，可以提供更好的用户体验和更丰富的功能。通过Eclipse RCP，开发者可以轻松地构建跨平台的桌面应用程序，满足各种不同用户的需求。接下来，教程介绍了基于Eclipse的应用程序的架构。Eclipse的架构是模块化和灵活的，可以根据具体的需求进行扩展和定制。Eclipse应用程序通常包含三个核心组件：插件（Plugin）、扩展点（Extension Point）和视图（View）。插件是Eclipse应用程序的基本构建单元，用于封装各种功能和资源。扩展点定义了插件之间的通信和协作方式。视图是Eclipse应用程序中的用户界面组件，用于展示数据和交互操作。此外，教程还介绍了Eclipse平台的核心组件。Eclipse平台提供了丰富的工具和API，方便开发者进行应用程序开发和调试。其中包括界面编辑器、代码编辑器、调试器等功能。开发者可以根据自己的需求选择合适的组件和工具，快速构建高质量的应用程序。最后，教程讲解了如何下载和安装Eclipse软件开发工具包（SDK）。通过下载和安装Eclipse SDK，开发者可以开始搭建开发环境，准备开始开发基于Eclipse的应用程序。Eclipse SDK提供了丰富的功能和工具，包括代码编辑器、调试器、界面设计器等，帮助开发者提高开发效率和代码质量。总的来说，Eclipse-4-RCP教程是一个全面且详细的教程，涵盖了Eclipse RCP应用程序的各个方面。通过学习本教程，开发者可以快速入门Eclipse RCP开发，掌握相关的核心概念和技术，从而开发出高质量的跨平台桌面应用程序。

Each model element has attributes which describe its current state, e.g. the size and the position of a window. The application model also

expresses the relationship of the model elements via a hierarchy.

每个模型元素都有描述其当前状态的属性，例如窗口的大小和位置。应用程序模型还通过层次结构表示模型元素的关系。

The individual user interface widgets, which are displayed in a part, are not defined via the application model, e.g., the content of the part

is still defined by your source code.

单独的用户界面小部件(它们是在一个部件中显示的)不是通过应用程序模型来定义的。，该部分的内容仍然由源代码定义

If the application model was a house, it would describe the available rooms (parts) and their arrangement (perspectives, part stacks, part

sash containers), but not the furniture of the rooms. This is illustrated by the following image.

如果应用程序模型是一个房子，它将描述可用的房间(part)和他们的排列(透视图 perspectives，部件堆栈 part stacks，部件边框容器 part sash containers)，而

不是房间的家具。如下图所示。

The base of the application model is typically defined as a static file. By default, it is called Application.e4xmi and located in the

main directory of the plug-in which defines the product extension. This file is read at application startup and is used to construct the initial

application model. Changes made by the user are persisted and re-applied at startup.

应用程序模型的基础通常定义为静态文件。默认情况下，它被称为 Application.e4xmi，位于插件的主目录中，它定义了产品的扩展名。此文件在应用

程序启动时读取，并用于构建初始应用程序模型。用户所做的更改在启动时被持久化并重新应用

The application model is extensible, e.g., other plug-ins can contribute to it via model processorsand model fragments.

应用程序模型是可扩展的。其他插件可以通过模型处理器和模型片段对其做出贡献。

7.2. Connecting model elements to classes and resources

将模型元素连接到类和资源

Model elements can point to a class or to a static resource via a Uniform Resource Identifier (URI). For this purpose Eclipse defines two

URI patterns. Eclipse instantiates the referred objects or resources in most cases lazily. For example, the classes for a part are instantiated

when the part gets visible.

模型元素可以通过统一资源标识符(URI)指向类或静态资源。为此目的，Eclipse 定义了两个 URI 模式。Eclipse 在大多数情况下使用惰性实例化所引用的对象或

资源。例如，当部件可见时，部件的类被实例化

The following table describes the support URI patterns. The example assumes that the bundle is called test to have a short name.

下表描述了支持 URI 模式。这个例子假设这个包叫做 test，它有一个短名称

Table 1. URI pattern for class and static file references 类和静态文件引用的 URI 模式

Pattern

Description

bundleclass://Bundle-

SymbolicName/package.classname

Example:

bundleclass://test/test.parts.MySavePart

Identifier for a Java class. It consists of the

following Java

类的标识符。它由以下内容组成

parts: bundleclass:// is a fixed

prefix. Bundle-SymbolicName is defined

in MANIFEST.MF file. The Bundle-

SymbolicName is followed by a '/' and the

fully qualified classname.

platform:/plugin/Bundle-

Used to identify resources. Identifier for a

Table 1. URI pattern for class and static file references 类和静态文件引用的 URI 模式

Pattern

Description

SymbolicName/path/filename.extension

Example:

platform:/plugin/com.example.plugin/icons/save_

edit.gif

resource in a plug-in.

用于识别资源。插件中的资源的标识符

platform:/plugin/ is a fixed prefix,

followed by the Bundle-SymbolicName,

followed by the path to the file and the

filename.

For example a part, have a Class URI attribute which points to a Java class via the bundleclass:// URI. This class provides the

behavior of the part. The corresponding object is created by the Eclipse framework. Using the house/rooms metaphor from earlier, the

class is responsible for defining the furnishings, the layout of the room and how the interactive objects behave.

例如，有一个类 URI 属性，它通过 bundleclass:/ / URI 来指向 Java 类。这个类提供了该部件的行为。对应的对象是由 Eclipse 框架创建的。使用房间/房间的隐

喻从更早的时候，这个类负责定义家具，房间的布局以及互动对象的行为

An example for a static resource reference is the the Icon URI attribute of a part. This attribute can point to an icon that is used for the

part.

静态资源引用的一个示例是部件的图标 URI 属性。该属性可以指向该部件使用的图标。

7.3. Runtime application model 运行时应用程序模型

At runtime of the application the created set of model objects is called the runtime application model. This runtime application model is

dynamic, i.e., you can change the model objects and its attributes and these changes are reflected in your application. The Eclipse platform

has change listeners registered on the model objects and updates the user interface whenever you change relevant attributes.

在应用程序的运行时，创建的模型对象集称为运行时应用程序模型。这个运行时应用程序模型是动态的，即。您可以更改模型对象及其属性，这些更改反映在

您的应用程序中。Eclipse 平台改变了在模型对象上注册的侦听器，并在更改相关属性时更新用户界面。

8. User interface model elements 用户界面模型元素

The following model elements represents the basic elements which you use to create the user interface of your application.

下面的模型元素代表了您用来创建应用程序的用户界面的基本元素。

8.1. Window

Eclipse applications consist of one or more windows. Typically, an application has only one window, but you are not limited to that, e.g.,

if you want to support multiple connected monitors.

Eclipse 应用程序由一个或多个窗口组成。通常，应用程序只有一个窗口，但您并不局限于此。如果您想支持多个连接的监视器。

8.2. Parts

Parts are user interface components which allow you to navigate and modify data. Parts can be stacked or positioned next to each other

depending on the container into which they are dropped. A part can have a drop-down menu, context menus and a toolbar.

部件是用户接口组件，允许您导航和修改数据。部件可以堆叠或放置在彼此旁边，这取决于它们被放置的容器。一个部件可以有一个下拉菜单，上下文菜单和

工具栏。

Parts can be classified as views and editors.

部件可以分为视图和编辑器。

A view is typically used to work on a set of data, which might be a hierarchical structure. If data is changed via the view, this change is

typically directly applied to the underlying data structure. A view sometimes allows the user to open an editor for the selected set of data.

For example, the Package Explorer view allows you to browse the files of Eclipse projects. If you for example rename a file via

the Package Explorer view, the file name is directly changed on the file system.

视图通常用于处理一组数据，这可能是一种层次结构。如果通过视图更改数据，则该更改通常直接应用于底层数据结构。一个视图有时候会允许用户为选中的

数据打开一个编辑器。例如，包资源管理视图允许你去浏览 Eclipse 工程文件。例如，如果您要通过 Package Explorer

视图

重命名一个文件，文件名称在

文件系统上直接更改。

Editors are typically used to modify a single data element, e.g., the content of a file or a data object. To apply the changes made in an

editor to the data structure, the user has to explicitly save the editor content.

编辑器通常用于修改单个数据元素，例如。，文件或数据对象的内容。要将编辑器中的更改应用到数据结构，用户必须显式地保存编辑器内容

For example, the Java editor is used to modify Java source files. Changes to the source file are applied once the user selects the Save button.

A dirty editor tab is marked with an asterisk left to the name of the modified file.

例如，Java 编辑器用于修改 Java 源文件。当用户选择 Save 按钮后，将应用对源文件的更改。一个暗的编辑器选项卡上有一个标有修改文件名称的星号

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