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�|�明 — Fri, 29 Jun 2007 06:18:00 GMT

摘要: Eclipse�?.0版本开始采用基于OSGi的插件体�pȝ��构。这��文章简要介�l�OSGi框架的功能架构。OSGi框架是OSGi服务�q�_��规范的核心部分。该框架提供了一个大众化�Q�安全，可管理的�q�_��Q�可以支持可扩展可下载应用插件的部��v�Q�我们称�q�些应用插�g为Bundle�?nbsp; 阅读全文

�|�明 2007-06-29 14:18 发表评论

�|�明 — Tue, 18 Apr 2006 02:10:00 GMT

昨天看了IBM Developerworks上一��介�l�WTP�?a class="" title="Eclipse Web 工具�q�_�� V1.0 ��? target="_blank">教程�Q�对照着使用WTP1.0完成一个J2EE�C�Z��书签应用�E�序�Q�服务器使用JBoss�Q�数据库用的�?a class="" title="" target="_blank">Derby�Q�Eclipse版本3.1.1�?br />
在新建JBoss Server�Ӟ��因�ؓ本机上已有Tomcat占用�?080端口�Q�未启动�Q�，所以将监听端口由默认的8080�Ҏ��?081�Q�结果运行服务器后：JBoss�q�程明明正常启动�Q�根据Console得出�Q�，但WTP的Servers视图却提�C�“Timeout waiting for JBOSS 3.2.3 to start. Server did not start after 50000s”，服务器的状态也昄��Stopped。但�Ҏ��默认�?080��׃��切正常。怎么能出�q�种问题呢？��N��WTP��是通过查询8080有没有JBoss在监听，从而判断JBoss是否启动成功�Q�强烈怀疑这是一个Bug�Q�不知道在最新版Eclipse和WTP改过来没�?img height="19" src="http://www.aygfsteel.com/Emoticons/confused_smile.gif" width="19" border="0" />

PS: 用老版的Eclipse3.1.1来开发也是迫不得�Ԍ��本来已安装了Callisto最�?strong>完整版（Eclipse3.2M5�Q�，但在J2EE透视图中��是看不到EJB��目分类�Q�新建EJB��目也抛��q�个异常�Q�看Log发现是JFace插�g里抛��Z��NullPointerException�Q��M��是做不下��M��Q�不知道�q�样的Callisto怎么会算MileStone�Q? (

那个50000s应该�?0000ms吧，50000s可是13�?3分啊�Q�^_^

�|�明 2006-04-18 10:10 发表评论

�|�明 — Sun, 09 Apr 2006 10:44:00 GMT

预览报表时提�C�无法显�C�网��，查看D:\eclipse\workspace\.metadata\.log文�g后发现错误：
!MESSAGE Exception occurred starting the embedded application server.
!STACK 0
org.apache.commons.logging.LogConfigurationException:
org.apache.commons.logging.LogConfigurationException:
org.apache.commons.logging.LogConfigurationException:
Class org.apache.commons.logging.impl.Log4JLogger does not implement Log
...

搜烦plugins目录下的log文�g�Q�发现既有Log4j又有CommonsLogging�Q�将plugins目录下的org.apache.jakarta_log4j_logging_version.jar�U�d��Eclipse目录�Q�移出Classpath�Q�，重启动Eclipse�Q�就可以预览了�?br />
其他Web服务器不能启动（如Eclipse的Help打不开�Q�JBoss提示上述Log异常�Q�的错误也可以参照以上方法解冟�?/p>

�|�明 2006-04-09 18:44 发表评论

[备䆾from blueline]Keyboard driven Eclipse [Terse Systems](zz)

�|�明 — Thu, 16 Feb 2006 06:09:00 GMT

I had to get obsessed with keyboard shortcuts when using IDEA.
Apparently some of that must have rubbed off, because
lately I've been looking for shortcuts to methods and classes in Eclipse 3.0.

There are two traversal shortcuts I use all the time: Ctrl-O and Ctrl-T.

Ctrl-O shows the methods of the class in the current editor in a popup.
Hit Ctrl-O when the popup is up, and you'll see all the inherited
methods as well. This is incredibly useful, as it allows me to bounce
between methods even when I'm not sure which class is implementing
which method.

Ctrl-T shows the type hierarchy of a selected type in a popup. This is the
complement to Ctrl-O. When I'm sure of what
interface I'm looking at, but I really want to pick a particular implementation
and want to go trawling through that
implementation for a bit, Ctrl-T will show me all the subclasses or
implementors for that type.

There is a third option which I haven't used much. Ctrl-F3 shows the
methods of a selected type in a popup. I can see how this can be useful,
but in practice I have a pretty good idea of which methods are attached
to which classes and Ctrl-Space fills most of my needs there.

However, I have been missing a couple of things. These are the shortcuts
I just found recently, and are very good for hitting up random files:

Ctrl-E shows a popup list of all the open files.
Ctrl-Shift-T creates a dialog box that you can use to navigate to any class.
Ctrl-Shift-R creates a dialog box that shows any resource in the project
(basically any file.)
Alternately, there's an Eclipse plugin called GotoFile which seems to behave
a little more "IDEAish".

Finally, I found a plugin which actually integrates Eclipse with Windows!
Eclipse Platform Extensions is actually functional and useful, although
you wouldn't guess it by looking at the website. Although it says that
it provides a "System GC" functionality, it actually does far more,
like provide a "Open in Windows Explorer" and
"Open Command Window here" dialog to the Package Explorer.

�|�明 2006-02-16 14:09 发表评论

[备䆾from blueline]Installing the help system as an infocenter

�|�明 — Thu, 16 Feb 2006 06:08:00 GMT

Installing the help system as an infocenter

You can allow your users to access the help system over the Internet or an intranet, by
installing the infocenter and the documentation plug-ins on a server. Clients view help
by navigating to a URL, and the help system is shown in their web browser. The
infocenter help system can be used both for client applications and for web
applications, either of which can have their help accessed remotely. All features
of help system except infopops and active help are supported.

The infocenter help system allows passing number of options that can be used to
customize various aspects of the infocenter. The following options are supported:

-eclipsehome eclipseInstallPath - specifies Eclipse installation directory.
This directory is a parent to "plugins" directory and eclipse executable.
The option must be provided, when current directory from which infocenter
is launched, is not the same as Eclipse installation directory.
-data instanceArea - specifies a path that Eclipse can use to write instance data.
The value can be an absolute path of a directory, or a path relative to Eclipse
installation directory. The option must be provided when Eclipse is installed in
the read only location, or has been customized to override osgi.instance.area
or osgi.instance.area.default properties.
-host helpServerHost - specifies host name of the interface that help server
will use. It overrides host name specified in the application server plugin preferences.
-port helpServerPort - specifies port number that help server will use. It overrides
port number specified in the application server plugin preferences.
-locales localeList - specifies a list of locales that infocenter will recognize and
provide a customized content for. If the option is not specified, infocenter will
build navigation, and index documents for each preferred locale of the browsers
accessing the infocenter. When the option is present, locales from browser
requests will be matched with locales in the list. If browser preferred locale
does not exist in the list, but its language part does, it will be used. Subsequently,
additional browser locales in decreased order of preference will be matched
against the list. If none of the browser locales (or its language part) matches any
locale on the list, the client will be served content in the default locale - server
locale or locale passed with -nl option. For example using options
```
-nl en -locales de en es fr it ja ko pt_BR zh_CN zh_TW
```
will cause infocenter operating in 10 locales. All other locales will receive content
for en locale.
-dir rtl - sets right-to-left rendering direction of help UI in the browser.
-noexec - indicates that Eclipse executable should not be used. You may need to use
this option when running on a platform for which Eclipse executable is not available.
Additionally, most options accepted by Eclipse executable can be passed. They are
especially useful during debugging and for applying customization to Eclipse.
For example, passing options
```
-vmargs -Xmx256M 
```
increases memory available to the infocenter and will allow serving a larger book collection.

Installation/packaging

These steps are for the help system integrator and are not meant to address all the possible scenarios.
It is assumed that all your documentation is delivered as Eclipse plug-ins and, in general, you are
familiar with the eclipse help system.

Download the Eclipse Platform Runtime Binary driver from www.eclipse.org.
Install (unzip) the driver in a directory, d:\myApp. This will create an eclipse sub-directory,
d:\myApp\eclipse that contains the code required for the Eclipse platform
(which includes the help system).

How to start or stop infocenter from command line

The org.eclipse.help.standalone.Infocenter class has a main method that you can use to
launch infocenter from a command line. The command line arguments syntax is:

-command start | shutdown | [-eclipsehome eclipseInstallPath] 
[-data instanceArea] [-host helpServerHost] [-locales localeList] 
[-port helpServerPort] [-dir rtl] [-noexec] [platform options] 
[-vmargs JavaVMarguments]

To start an infocenter on port 8081 issue a start command by running

java -classpath d:\myApp\eclipse\plugins\org.eclipse.help.base_3.1.0.jar 
org.eclipse.help.standalone.Infocenter -command start -eclipsehome 
d:\myApp\eclipse -port 8081

To shut the infocenter down issue a shutdown command by running

java -classpath d:\myApp\eclipse\plugins\org.eclipse.help.base_3.1.0.jar 
org.eclipse.help.standalone.Infocenter -command shutdown -eclipsehome 
d:\myApp\eclipse

Using the infocenter

Start the web server. Point a web browser to the path "help" web application running on a port
specified when starting the infocenter. On the machine the infocenter is installed, this would be
http://localhost:8081/help/.

How to start or stop infocenter from Java

When including infocenter as part of another application, it may be more convenient to start it
and stop using Java APIs instead of using system commands. Follow the steps if it is the case:

Make sure d:\myApp\eclipse\plugins\org.eclipse.help.base_3.1.0.jar is on your app classpath.
The class you use to start, and shut down the infocenter isorg.eclipse.help.standalone.Infocenter.
Create an array of String containing options that you want to pass to the infocenter. Typically,
the eclipsehome and port options are needed.
```
String[] options = new String[] { "-eclipsehome", "d:\\myApp\\eclipse" ,
 "-port", "8081" }; 
```
In your application, create an instance of the Help class by passing the options.
```
Infocenter infocenter = new Help(options); 
```
To start the help system:
```
helpSystem.start();
```
To shut the infocenter down:
```
helpSystem.shutdown(); 
```

Making infocenter available on the web

Eclipse contains a complete infocenter and does not require other server software to run.
However, in unsecure environment like Internet, it is recommended infocenter is not accessed
directly by clients, but is made available through an HTTP server or an application server.
Most servers come with modules or servlets for delegating certain request to other web
resources. For example, one may configure a proxy module of Apache HTTP Server to
redirect requests made to http://mycompany.com/myproduct/infocenter to
http://internalserver:8081/help that runs an infocenter. Adding the lines

LoadModule proxy_module modules/ApacheModuleProxy.dll
ProxyPass /myproduct/infocenter http://internalserver:8081/help
ProxyPassReverse /myproduct/infocenter http://internalserver:8081/help

to conf/httpd.conf file of Apache server running mycompany web site accomplishes this.

Some versions of Apache HTTP server, may contain AddDefaultCharset directive enabled in
configuration file. Remove the directive or replace with

AddDefaultCharset Off

to have browsers display documents using correct character set.

Running multiple instance of infocenter

Multiple instances of infocenter can be run on a machine from one installation. Each started
instance must use its own port and be provided with a workspace, hence -port and -data
options must be specified. The instances can serve documentation from different set of plug-ins,
by providing a valid platform configuration with -configuration option.

If -configuration is not used and configuration directory is shared among multiple infocenter
instances, with overlapping set of locales, it must be ensured that all search indexes are created
by one infocenter instance before another instance is started. Indexes are saved in the configuration
directory, and write access is not synchronized across infocenter processes.

[Optional] Installing a minimal set of plug-ins

The infocenter does not require the entire Eclipse Platform package. It is possible to run the
infocenter with the following plug-ins (located in the eclipse\plugins directory):

org.apache.lucene org.eclipse.core.runtime org.eclipse.help org.eclipse.help.appserver org.eclipse.help.base org.eclipse.help.webapp org.eclipse.osgi org.eclipse.tomcat org.eclipse.update.configurator

Some documentation plug-ins may have dependencies on other plug-ins, usually by specifying required
plug-ins in their plugin.xml. The dependent plug-ins need to be installed on the infocenter as well.
Additionally, plug-ins that were designed for earlier than 3.0 version of Eclipse implicitly require an org.eclipse.core.runtime.compatibility being present plug-in to work.

Infocenter plug-ins can be updated without restarting the infocenter, using commands explained
in Updating a running infocenter from command line topic. To use this functionality, the minimal
set of plug-ins must include org.eclipse.update.core plug-in.

See Help System Preferences for more information on customizing help system.

�|�明 2006-02-16 14:08 发表评论

以前做的两个开源项目，分别��Z��Java Swing �?Eclipse RCP

�|�明 — Fri, 16 Dec 2005 13:06:00 GMT

�W�一个是XmallCharter, 何�ؓCharter? ��是��d��表的啦。Xmall�?是我毕业后要开的公司的名字啊（�q�家伙又在yy了^_^�Q��?BR>
XmallCharter是一个基于JFreeChart库的图表软�g�Q�仿照PowerPoint里的图表功能�Q�支持饼状图、域图、线状图、条形图�?D条�Ş囄��图表�c�d��Q?00% Java Swing 代码�Q�绿色��Y�Ӟ��解压�~�即可在Linux、W$�{�系�l�上�q�行�?BR>
��目现在“寄居”在SourceForge.net上，最新版本是0.2�?BR>
��d��学校的创新竞赛（也是挑战杯的校内选拔赛）�Q�每个俱乐部都要交作品，我顺便把XmallCharter和文��交了上去，�q�好�Q�得了个三等奖，当时�q�比较兴奋（�q�个��目本来是《界面设计》课�E�的大作业，那时候刚刚完成，才花了一个星期，意外之喜�Q?BR>
��目�|�址�Q?A >www.sourceforge.net/projects/xmallcharter

�W�二个是XBlogger�Q�一个基于Eclipse RCP的Blog客户端，是今�q�IBM校园�U�技创新竞赛的参赛作品，但是�׃��某些原因�Q�最�l�没能提交（55～，早点回学校就好了�Q�。本地数据库使用HSqlDB�Q�目前只支持Blogger.com�Q?Text�c�d��的也能支持，但还没加上，懒了�Q�。本来应该有个Web Service中间层，以后可行的话可能会加上，基本架构和截屏如下（现在�q�没开源，完善一下先�Q�：

基本架构�Q?BR>

�Q�用OpenOffice打开的Word文��Q�有点变形）

截图�Q?BR>

�|�明 2005-12-16 21:06 发表评论

�|�明 — Thu, 06 Oct 2005 07:26:00 GMT

Job代表一个异步操作�?BR>要执行的操作写在run�Ҏ��里�?/P>

//定义一个Job
class AJob extends Job
{
public AJob()
{
  super("Andy's Job");
}

public IStatus run(IProgressMonitor monitor)
{
  System.out.println("This is Andy's Job");
  return Status.OK_STATUS;
}
}

schedule后，��d��在��^台线�E�等待队列中排队�Q�等待调度执行�?BR>调用方式1�Q?/P>

//异步调用
AJob job = new AJob();
job.schedule(); //唤�v�q�_��U�程来调度这个Job

调用方式2�Q?/P>

//�l�束后再�q�行
AJob job = new AJob();
job.schedule();
// do some other things.
job.join(); //block�Q�直到job完成或调用线�E�被中断
if(job.getResult().isOk())
{
//Job completed with success.
}
else
{
//Job did not complete successfully.
}

取消一个Job�Q?BR>

if(!job.cancel())
{
job.join();
} //cancel可能不会立即成功�Q�我们用join�{�待cancel操作完成�?/SPAN>

�|�明 2005-10-06 15:26 发表评论

Eclipse Tip: Sharing Java project settings (ZZ)

�|�明 — Fri, 15 Jul 2005 12:05:00 GMT

The Eclipse 3.1 has a new feature. Now the Java project settings like Compiler and Code Style can be shared with the entire team using the version control tool.

To do this right click the project in Package Explorer or Navigator view and got to either Java Code Style or Java Compiler options. Check the Enable project specific settings.

This will create a .settings folder in the project root. Eclipse will add and maintain the project specific configuration in this folder. Commit this folder to the version control. Thats it. Now the project settings are shared with the team. When the other team members synchronize with the repository they will get the project settings too. Any team member can update and check in the settings. Cool!

�|�明 2005-07-15 20:05 发表评论

Eclipse Icons

�|�明 — Fri, 15 Jul 2005 11:50:00 GMT

都在�q�几个文件夹里：
org.eclipse.debug.ui/icons
org.eclipse.pde.ui/icons
org.eclipse.jdt.ui/icons
org.eclipse.vcm.ui/icons
org.eclipse.team.ui/icons
org.eclipse.ant.ui/icons
org.eclipse.help.ui/icons
org.eclipse.ui/icons
org.eclipse.ui.views/icons
org.eclipse.ui.console/icons

一个比较全的Icon�|�页�Q?BR>http://www.codehaus.org/~bwalding/eclipse-icons/

以后找Eclipse的图片就方便了，: )

�|�明 2005-07-15 19:50 发表评论

Eclipse's process monitor & Container Selection Dialog

�|�明 — Sun, 10 Jul 2005 02:35:00 GMT

The wizard in this code is a standard wizard that displays pages, then generates code in the doFinish method. What is most interesting about this class is that in performFinish, it demonstrates how to interact with Eclipse's process monitor for tasks that take a long time.

/**
   * This method is called when 'Finish' button is pressed
   * in the wizard. We will create an operation and run it
   * using wizard as execution context.
   */
  public boolean performFinish() {
    final String containerName = page.getContainerName();
    final String fileName = page.getFileName();
    IRunnableWithProgress op = new IRunnableWithProgress()
    {
      public void run(IProgressMonitor monitor)
          throws InvocationTargetException
      {
        try {
          doFinish(containerName, fileName, monitor);
        } catch (CoreException e) {
          throw new InvocationTargetException(e);
        } finally {
          monitor.done();
        }
      }
    };
    try {
      getContainer().run(true, false, op);
    } catch (InterruptedException e) {
      return false;
    } catch (InvocationTargetException e) {
      Throwable realException = e.getTargetException();
      MessageDialog.openError(
          getShell(),
          "Error", realException.getMessage());
      return false;
    }
    return true;
  }

/*  */
/**
   * The worker method. It will find the container, create
   * the file if missing or just replace its contents, and
   * open the editor on the newly created file.
   */

  private void doFinish(
      String containerName,
      String fileName,
      IProgressMonitor monitor)
      throws CoreException
  {
    // create a sample file
    monitor.beginTask("Creating " + fileName, 2);
    IWorkspaceRoot root =
        ResourcesPlugin.getWorkspace().getRoot();
    IResource resource = root.findMember(
        new Path(containerName));
    if (!resource.exists() ||
        !(resource instanceof IContainer))
    {
      throwCoreException("Container \"" +
          containerName + "\" does not exist.");
    }
    IContainer container = (IContainer) resource;
    final IFile file =
        container.getFile(new Path(fileName));
    try {
      InputStream stream = openContentStream();
      if (file.exists()) {
        file.setContents(stream, true, true, monitor);
      } else {
        file.create(stream, true, monitor);
      }
      stream.close();
    } catch (IOException e) {
    }
    monitor.worked(1);
    monitor.setTaskName("Opening file for editing");
    getShell().getDisplay().asyncExec(new Runnable() {
        public void run() {
          IWorkbenchPage page =
              PlatformUI.getWorkbench().
              getActiveWorkbenchWindow().getActivePage();
          try {
            IDE.openEditor(page, file, true);
          } catch (PartInitException e) {
          }
        }
      });
    monitor.worked(1);
  }

This code is a simple SWT wizard page. The most interesting characteristic of this class is in the handleBrowse method. This method uses Eclipse's ContainerSelectionDialog for displaying the folders in the workspace.

/**
   * Uses the standard container selection dialog to
   * choose the new value for the container field.
   */
  private void handleBrowse() {
    ContainerSelectionDialog dialog =
        new ContainerSelectionDialog(
            getShell(),
            ResourcesPlugin.getWorkspace().getRoot(),
            false,
            "Select new file container");
    if (dialog.open() == ContainerSelectionDialog.OK) {
      Object[] result = dialog.getResult();
      if (result.length == 1) {
        containerText.setText(
            ((Path)result[0]).toOSString());
      }
    }
  }

�|�明 2005-07-10 10:35 发表评论

如何制作和��用库插�g --Eclipse RCP -- 设计��结

�|�明 — Wed, 06 Jul 2005 08:30:00 GMT

在Eclipse的插件体�p�M��Q�所有的�c�d��文�g都是以插件的形式存在的。如果你的Plugin��目要用到第三方API库或者另一个工�E�的API�Q�你可以��他们包装成一个插�Ӟ��q�就是库插�g的含义�?/P>

在我们小�l�的设计中，Plugin和控刉��辑是分成两个工�E�单独开发的�Q�Plugin主要实现界面功能�Q�通过调用控制逻辑实现数据存储、Blog发布、打印等功能�Q�所以接触到了制作库插�g�q�个�q�程�Q�现在写下来�Q�希望有点帮助�?/P>

如何制作库插�Ӟ��
��库工程转换为Plugin工程�Q�在MANIFEST.MF的overview里定义ID�Q�在Runtime里加入你要公开的包�Q�Exported Packages�Q�。OK

如何使用库插�Ӟ��主要分�ؓ三步�Q?BR>1、在Dependencies Tab的Required Plug-ins中加入你的库插�g�Q�保证输出项目时导出相应的库插�g�Q?BR>2、然后Compute build path�Q��ə�目能够��利通过�~�译�Q?BR>3、在�q�行对话框的Plugin Tab里单击Add required plugins�Q�这样项目才能正常运�?BR>
有一点忘了就会挺郁闷的！

RCP Eclipse Plugin

�|�明 2005-07-06 16:30 发表评论

�|�明 — Wed, 06 Jul 2005 08:28:00 GMT

详细的制作Help�q�程我就不说了，�?A >�q�里可以扑ֈ��?/P>

要注意三个问题：
1、添加的插�g要齐全，使用Help要增加以下几个插�Ӟ��
org.apache.ant
org.apache.lucene
org.eclipse.help.appserver
org.eclipse.help.base
org.eclipse.help.ui
org.eclipse.help.webapp
org.eclipse.tomcat

2、在Build里添加html文�g的信息，使html文�g能正��导出，如：
bin.includes = plugin.xml,\
               *.jar,\
               plugin.properties,\
               book.xml,\
               html/,\
               icons/

3、在html文�g中不能有中文的链接（昄��Zؕ码，服务器会提示找不到该文�g�Q�，所以html和图片的名称��量用英文，内容用中文倒没有问题�?/P>

�|�明 2005-07-06 16:28 发表评论

�|�明 — Thu, 23 Jun 2005 11:43:00 GMT

Problem Description�Q�新��Z��一个RCP Mail的Template Example�Q�运行正常，但是当我��在另一个RCP工程里徏好的View放进来时�Q�工�E�运行就抛出Invalid Menu Extension (Path is invalid): org.eclipse.ui.edit.text.gotoLastEditPosition�Q�而且菜单和工��h��里多��Z��一些Eclipse自己的东西（如Search�Q�Go to Last Edit Location�Q�。捣动半天未果，后来偶然发现另外一个一模一��L��q�行配置�q�行OK�Q�只是��用了另一个Workspace�Q�比较一下发玎ͼ�出错工程的Workspace多了三四个Plugin的配�|�（org.eclipse.core.resources�Q�org.eclipse.core.runtime�Q�org.eclipse.debug.core�Q�org.eclipse.debug.ui�Q�，而成功的工程workspace只有org.eclipse.ui.workbench的Plugin配置�Q�其他都一��P��即��我复制过来也不好�ѝ��现在只能用以前的那个成功的配置了，好��Q�但不知道�ؓ什么会出现上述情况�Q?BR> ��N��是成功的工程已经��一些Extension注册了，所以后面的工程都用不了�?/P>

可能的原因：今天看Eclipse的RCP Tutorial时注意到Eclipse RCP所需的Plugin最��集是org.eclipse.core.runtime和org.eclipse.ui�Q�又记�v昨天使用了PDE的调试功能，所以org.eclipse.debug.core�Q�org.eclipse.debug.ui可能是调试时生成的，或者是以前别的��目用过出错工程的workspace目录�Q�生成了一些别的Plugin目录�Q�而多出的Plugin在Plugin.xml文�g里注册的menu在我的程序里没有被添加（或者没有定义对应的MenuPath�Q�，于是��抛��Z��Q�Invalid Menu Extension (Path is invalid)

不过�q�有一个问题：怎么workspace�?Plugin文�g多w��只有org.eclipse.ui.workbench而没有org.eclipse.core.runtime�Q�有谁知道这是�ؓ什么吗�Q?/P>

�|�明 2005-06-23 19:43 发表评论

《Contributing to Eclipse》阅�ȝ��?- �W�零循环 - Eclipse整体架构

�|�明 — Fri, 17 Jun 2005 14:53:00 GMT

��Z��打好做Plugin的基��Q�今天特地借了本《Contributing to Eclipse》，其实应该是买一本的�Q�这本书�q�么�l�典。听说这本书是从Eclipse的内部构架来讲的�Q�对于快速入门Plugin的开发可能不是特别合适，但没有发��C��店有别的关于SWT或Plugin的书�Q?55

好了�Q�开始切入正题，Go Go Go

《Contributing to Eclipse》分为四个��@环，�W�一个��@环是�W�零个��@环（hahaha�Q��?BR>
�W�零个��@环介�l�了Eclipse的基��架构�Q�然后通过�~�写一个最��单的HelloWorld Plugin带我们走�q�Contributing的大门�?/P>

先说说这里列出的比较重要的概念：
Eclipse分�ؓ三层�Q�Platform、JDT、PDE。其中PDE是对JDT的扩展，提供了插件开发支持�?/P>

Platform又分��Z��层：Core�Q�Workspace、Runtime�Q�、UI�Q�Workbench、JFace、SWT�Q��?BR>下面分别介绍一下：
Runtime --- 定义了插件的基础设施。启动时发现所有可用插件�ƈ��理插�g的加载�?BR>Workspace --- ��理一个或多个��目�?BR>SWT�Q�Standard Widget Toolkit�Q?-- 提供囑�Ş昄��功能�Q�定义了一�l�标准窗体组件�?BR>JFace --- 建立在SWT上的一�l�比较小的UI框架�Q�提供对常用UI��d��的支持�?BR>Workbench --- Eclipse的UI聚合体，核心要素是编辑器、视图（View�Q�和视角�Q�Perspective�Q��?BR>其中视角�Q�Perspective�Q�定义了各工作台部�g的可视化排列方式�?/P>

All Right. That's how you get it.
Go on, be a tiger.

�|�明 2005-06-17 22:53 发表评论

�|�明 — Fri, 17 Jun 2005 00:20:00 GMT

SWT里的Right to Left Style�Q�将Menu设�ؓSWT.RIGHT_TO_LEFT��可以了�Q�以前没看到�q�这�U�效果，不知道别的语�a�可不可以�q�样�?BR>

�|�明 2005-06-17 08:20 发表评论

�|�明 — Thu, 16 Jun 2005 20:30:00 GMT

刚才看了Examples里的Web Browser实例�Q�感觉特别像一个Rss Reader里的��易浏览器�?/P>

上software.hit.edu.cn看Flash没有问题�Q�打开一个Word文档也OK�Q�应该是内嵌了IE吧�?/P>

看了代码也只发现一个setLocation(URL)�Q�没有跟本地�pȝ��联系的代码，��N��SWT里的Browser本��n��内嵌了IE�?/P>

以前也听说过SWT是不用虚拟机的（是吗�Q�）�Q�都是调用本地的dll�Q�只是现在亲眼目睹了�?/P>

�q�不有点像AWT吗？�Q?/STRONG>

�|�明 2005-06-17 04:30 发表评论

SWT Examples阅读�W�记 - Custom Controls

�|�明 — Thu, 16 Jun 2005 20:01:00 GMT

�q�就是定制的Controls�Q�有什么特别的地方吗？我好像也没看出来

CCombo��是一个ComboBox�Q�不�q�可以设为Flat�Q�这��h��较酷�?BR>
CLabel有一个Shadow相关的属性，可以讄��IN或OUT�Q�就是突出或凹进�Q�这是Label啊！搞得�q�么花哨�Q��?BR>
CTabFolder在视觉上有些改进�Q�也是Flat Style�Q�看着看着��忍不住想碰一下。当Size�~�小�Ӟ��CTabItem可以隐藏��h��Q�在右上�Ҏ��C�Z��个下拉双��头�Q�还昄��了隐藏的Item数目�Q�应该就是Eclipse里的那种风格了�?BR>

StyledText�Q�顾名思义。比较特别的�Q�可以将句子Strikeout�Q�就是在选择的句子上划一条“删除线”�?BR>
TableTree跟上节Controls里讲的Tree差不多�?U>有一个SWT.FULL_SELECTION Style不知道有什么用�?BR>
例子看完了，休息...休息一下�?/P>

�|�明 2005-06-17 04:01 发表评论

SWT Examples阅读�W�记 - Controls

�|�明 — Thu, 16 Jun 2005 19:20:00 GMT
我们来看一下Swt Controls�Q�所有的控�g应该都在�q�里了�?BR>首先是Button�Q�里面的TOGGLE�Q�按下不弹�v�Q�、FLAT�Q��^�q�的�Q�跟DotNet里的Flat Style差不多）和ARROW�Q�一个方向箭��_��可以指定方向�Q�挺好玩的，�l�合一下会有多重效果（�?| 来组合，如SWT.ARROW | SWT.FLAT | SWT.PUSH�Q��?BR>
再看看Canvas�Q�画布）,SWT.NO_REDRAW_RESIZE属性设�|�resize时画布不重画�Q�想起了��田老师的实�?�Q�呵��c�?U>Caret昄��一个光�?/U>�Q�不知道是干什么用的�?U>�q�有一个Fill Damaged Area With Color�Q�看源代码也没弄懂，不就是画几个五颜六色的Rectangle吗，要单独列出来吗？

�W�三是ComboBox�Q�Style是SWT.DROP_DOWN时是下拉列表�Q�SWT.SIMPLE是将所有选项都��^铺在板子上的ComboBox�?BR>
CoolBar也是工具栏咯�Q�只不过比一般的ToolBar漂亮�Q�SWT里还有ToolBar�Q�不知道Item Styles中的SWT.DROP_DOWN有什么用�Q�好像只对Toggle Item起作用。工��h��里可以放Text了。（后补 -> 发现DROP_DOWN的功能了�Q�Item被隐藏时昄��一个扩展箭头。刚才说的Toggle Item其实是Radio�Q?BR>
Dialog有四个Model Style�Q�SWT.MODELESS、SWT.PRIMARY_MODAL、SWT.APPLICATION_MODAL、SWT.SYSTEM_MODAL(不知道PRIMARY_MODAL是做什么用�?

ToolBar里可以加入ComboBox

Tree可以有Multiple Columns和Header。甚臌��能显�C��列，��直就是Tree和Table的结晶�?BR>
例子看完了，休息...休息一下�?IMG height=1 src="http://blueline.hit.edu.cn/blog/andy/aggbug/1683.aspx" width=1>

�|�明 2005-06-17 03:20 发表评论

�|�明 — Thu, 16 Jun 2005 17:39:00 GMT

假如不考研的话�Q�我��p��在这一�D�|��间多弄弄技术了�Q�决定学学Eclipse的plugin和RCP�Q�于是首先得学SWT�?BR>
上次看了几篇中文的paper�Q�知道了SWT的基本应用，现在该动动手了（��管我向来都提倡君子动口不动手的，呵呵�Q�，当然是首先看看swt都能�q�什么啦�Q�最好的下手之处��是swt examples�?BR>
�q�行环境��是Eclipse啦，我的Eclipse本来不打��换的，我已�l�装了RC1�Q�那天下RC2也是一位朋友要用，我的电脑上从3.0.1�?.1RC2都有�Q�pat�Q�，但听说RC2��快，所以也解压�~�试一下。说了这么多废话�Q�真有点对不赯��众，555

现在看看怎么�q�行SWT Examples�Q�我们启动Eclipse�Q�从Help的Welcome里选择Samples�Q�单击SWT下面的红圆圈�Q�链接到download examples(我在Update里设了代理，速度马马虎虎)�Q�自动安装完examples后，单击OutLine里的run examples�Q�不要害怕，�q�时会弹��Z��个Eclipse的启动画面，不要认�ؓ哪里做错了，对，�q�就是Examples的Laucher。在Laucher打开的workbench里选择Window->Show View->Other,选择Swt Examples里的例子。现在可以慢慢看了�?/P>

�|�明 2005-06-17 01:39 发表评论