欧美日韩电影一区,亚洲一区二区三区中文字幕在线 ,国产91对白在线播放

Mon, 25 Feb 2008 04:04:00 GMT

摘要: 摘自�Q�http://book.csdn.net/bookfiles/493/10049317083.shtml 从本章开始，��带领大家进入激动�h�?j��)的Eclipse RCP开发之旅。本章先��经�Ҏ(gu��)��系�l�的架子搭徏��h��Q�例如菜单、工��h��、主控界面等�{�，至于�pȝ��各功能的实现�l�节�Q�在随后的章节中��层层剥开。�ؓ(f��)�?ji��n)节省篇�q�，从本章开始，对于大量需要导入的�c�，在程序代码中��予以省略�?本章��主要学�?f��n)到�?.. 阅读全文

��D��?/a> 2008-02-25 12:04 发表评论

扩展Eclipse视图弹出菜单

Sat, 23 Feb 2008 02:37:00 GMT

转自�Q�http://cnfree2000.spaces.live.com/blog/cns!6201144F025F9D77!426.entry

Eclipse里每�U�编辑器都有它自��q��视图�Q�有时候我们需要在上面��d��自己的功能，扩充视图弹出菜单则是必不可少的工作之一�?

在一个视囄��Popup Menu里增加一个菜单项�Q�含�?�U�方式：(x��)

1、viewerContribution�Q�也��是通过视图的id。这样只有视图id和给定的id一致的时候，它的弹出菜单才会(x��)增加我们定义的菜单项�?

2、objectContribution�Q�通过对象�c�d��。当在视��N��选定的对象类型和�l�定的一致时�Q�在视图的弹�?gu��)��单增加我们定义的菜单��V�?

菜单��的Action需要��承org.eclipse.ui.actions.ActionDelegate�Q�然后实现特�D�的View的ActionDelegate接口。比如要扩展Java�~�辑器：(x��)

public class FinderActionDelegate extends ActionDelegate implements
        IEditorActionDelegate {

来看看插件的Plugin.xml的组成部分：(x��)

viewerContribution形式�Q?
             point="org.eclipse.ui.popupMenus">
                   targetID="#TextEditorContext"
            id="com.cnfree.finder.editor">
                         label="查找最大ID"
               icon="icon/search.gif"
               helpContextId="com.cnfree.finder.finderaction"
               class="com.cnfree.finder.FinderActionDelegate"
               menubarPath="additions"
               enablesFor="+"
               id="com.cnfree.finder">


                   targetID="#CompilationUnitEditorContext"
            id="com.cnfree.finder.editor">
                         label="查找最大ID"
               icon="icon/search.gif"
               helpContextId="com.cnfree.finder.finderaction"
               class="com.cnfree.finder.FinderActionDelegate"
               menubarPath="additions"
               enablesFor="*"
               id="com.cnfree.finder">


    < br />             point="org.eclipse.ui.editorActions">


�q�里我们需要知道扩展的视图它的菜单��在Eclipse插�g注册表里定义的id�Q�稍后我�?x��)附上Eclipse插�g菜单��ID注册表）(j��)。比如Java�~�辑器对应的ID为：(x��)
#TextEditorContext �?nbsp;#CompilationUnitEditorContext�Q�我们定义好 targetID�Q�就把我们的插�gid指向视图菜单的id�?ji��n)。这样Java�~�辑器就�?x��)添加我们的菜单��?ji��n)�?

   id            CDATA #REQUIRED
   label         CDATA #REQUIRED
   menubarPath   CDATA #IMPLIED
   toolbarPath   CDATA #IMPLIED
   icon          CDATA #IMPLIED
   disabledIcon  CDATA #IMPLIED
   hoverIcon     CDATA #IMPLIED
   tooltip       CDATA #IMPLIED
   helpContextId CDATA #IMPLIED
   style         (push|radio|toggle) "push"
   state         (true | false)
   class         CDATA #REQUIRED
   enablesFor    CDATA #IMPLIED>
< br />此元素定义用户可在用��L(f��ng)��面中调用的操作�?

id �Q?nbsp;用作此操作的引用的唯一标识�?nbsp;
label �Q?nbsp;用作菜单��Ҏ(gu��)��本或工具栏按钮标�{��可翻译名�U�。此名称可包括助记符信息�?
menubarPath �Q?nbsp;用来指定下拉菜单中此操作位置的以斜杠�Q?#8220;/”�Q�定界的路径。�\径中的每个标讎ͼ�最后一个标记除外）(j��)都必��表�C�层�ơ结构中现有菜单的有效标识。最后一个标记表�C��操作添加到其中的命名组。如果省略了(ji��n)路径�Q�则此操作将不会(x��)出现在下拉菜单中�?nbsp;
toolbarPath �Q?nbsp;目标视图的本地工��h��内的命名�l�。如果该�l�不存在�Q�则��创建它。如果省略该��，则操作将不会(x��)出现在本地工��h��中�?nbsp;
icon �Q?nbsp;用来在操作的上下文中可视地表�C�操作的图标的相对�\径。如果省略该��且操作出现在工��h��中，�?#8220;工作�?#8221;��用占位符图标。该路径是相对于��d��插�g�?nbsp;plugin.xml 文�g的位�|�的。图标将出现在工��h��中，但是不会(x��)出现在下拉菜单中�?
disabledIcon �Q?nbsp;当禁用操作时�Q�用于在操作的上下文中可视地表示操作的图标的相对路径。如果省略该��，则正常图标将变灰。该路径是相对于��d��插�g�?nbsp;plugin.xml 文�g的位�|�的。禁用的图标��出现在工具栏中�Q�但是不�?x��)出现在下拉菜单中�?
hoverIcon �Q?nbsp;当鼠标指针位于操作上�Ӟ��用来在操作的上下文中可视地表�C�操作的图标的相对�\径。如果省略此��，则将使用正常图标。该路径是相对于��d��插�g�?nbsp;plugin.xml 文�g的位�|�的�?
tooltip �Q?nbsp;表示操作的工��h��C�的可翻译文本。仅当操作出现在工具栏中时才使用�?
helpContextId �Q?nbsp;一个指�C�此操作的帮助上下文的唯一标识。如果操作作��单项出现�Q�则在突出显�C��菜单��Ҏ(gu��)��?nbsp;F1 键将昄��帮助�?
style �Q?nbsp;用来定义操作的用��L(f��ng)��面样式类型的可选属性。如果定义了(ji��n)此项�Q�则属性值将是下列其中一��：(x��)
   push �Q?nbsp;作�ؓ(f��)普通菜单项或工具项�?nbsp;
   radio �Q?nbsp;作�ؓ(f��)单选样式菜单项或工具项。同一菜单或工��h��l�内��h��单选样式的操作相当于单选按钮集。初始值由 state 属性指定�?
   toggle �Q?nbsp;作�ؓ(f��)复选样式菜单项或切换工具项。初始值由 state 属性指定�?nbsp;
state �Q?nbsp;指示初始状态（true �?nbsp;false�Q�的可选属性，�?nbsp;style 属性具有�?nbsp;radio �?nbsp;toggle 时��用�?
class �Q?nbsp;实现 org.eclipse.ui.IViewActionDelegate 的标准类的名�U��?
enablesFor �Q?nbsp;指示必须满��才能启用操作的选择计数的倹{��如果指定了(ji��n)此属性�ƈ且满��x(ch��ng)��Ӟ��则启用操作。如果条件不满��Q�则��用操作。如果没有指定�Q何属性，则对选择�?ji��n)�Q意数目的��启用操作。下列属性格式受支持�Q?nbsp;! �Q?nbsp;选择�?ji��n)零�?nbsp;
   ? �Q?nbsp;选择�?ji��n)零��?gu��)��一��?nbsp;
   + �Q?nbsp;选择�?ji��n)一��Ҏ(gu��)��多项
   multiple, 2+ �Q?nbsp;选择�?ji��n)两��?gu��)��多项
   n �Q?nbsp;选择�?ji��n)精��数目的��V��例如：(x��)nablesFor=" 4" 仅当选择�?nbsp;4 个项时才启用操作�?nbsp;
   * �Q?nbsp;选择�?ji��n)�Q意数目的��?

objectContribution形式�Q?


                   id="com.cnfree.open"
            menubarPath="new.ext"
            definitionID="com.cnfree.open.selection"
            label="&Open@Ctrl+O"
            tooltip="Open the selected item(s)"
            helpContextId="com.cnfree.open.selection"
            icon="icon/open.gif"
            class="com.cnfree.action.Op enSelectedActionDelegate"
            enablesFor="+">



action Open实现�?ji��n)IOpenable�Q�这样就意味着�Q�所有包含了(ji��n)IOpenable对象的视图，当我们选中其中的IOpenable对象�Ӟ��它的弹出菜单都会(x��)增加我们自定义的菜单��V�?

附带的例子：(x��)
cnfree editor plugin

使用说明�Q�徏立一个Java文�g�Q�在它的注释里添�?nbsp;xxx.yyy �Q�xxx��Z��个类名，yyy��Z��个三位数ID�Q�比如cnfee.100,cnfree.101,cnfree.102�Q�在Java透视��N��打开�q�个Java文�g�Q�右键菜单会(x��)有一个选项�Q�查找最大ID�Q�打开后输入cnfree�Q�它?y��u)�׃�?x��)自动扑ֈ�cnfree.102�Q��ƈ��该字符串高?sh��)��显�C��?

Eclipse插�g菜单ID注册表参考：(x��)http://www.jdg2e.com/ch21.actions.table/doc/

参考资料：(x��)
http://www.eclipsesource.com/EN_ARCHIVE/etips_07072004.html
Eclipse帮助�Q?a target="_blank">org.eclipse.platform.doc.isv/guide/workbench_basicext_popupMenus.htm

��D��?/a> 2008-02-23 10:37 发表评论

Sat, 23 Feb 2008 02:29:00 GMT

转自�Q?a href="http://www.aygfsteel.com/cnfree/archive/2006/06/16/53326.html">http://www.aygfsteel.com/cnfree/archive/2006/06/16/53326.html

上一��文�?/font>我们知道�?ji��n)Eclipse弹出菜单的基本用法。其实Eclipse的弹�?gu��)��单可以用来做很多文章�Q�简单一点的�Ҏ(gu��)��文�g�c�d��Q�我们可以进行不同的文�g操作�Q�比如Ant的build.xml我们可以用来build�Q�Java文�g我们可以用Java Editor打开�Q�这些基于文件类型的操作我们都可以很�Ҏ(gu��)��的实现。但是还有一�U�情况，如果文�g�c�d��一��P��我们惌��行不同的操作�Q�该怎么实现呢？实际上这��L(f��ng)��应用很多�Q�比如同��h��Java文�g�Q�含有main�Ҏ(gu��)��的Java文�g有Run和Debug的选项�Q�其它的都没有。还有现在的框架都是��Z��XML文�g�q�行配置的，如果一个项目��用了(ji��n)多个框架�Q�我们怎么�Ҏ(gu��)��不同的XML文�g�q�行框架的区分呢�Q�答案就是enablement的test�?/font>

test EMPTY>
property CDATA #REQUIRED
args CDATA #IMPLIED
value CDATA #IMPLIED>

This element is used to evaluate the property state of the object in focus. The set of testable properties can be extended using the propery tester extension point. The test expression returns EvaluationResult.NOT_LOADED if teh property tester doing the actual testing isn't loaded yet.

property - the name of an object's property to test.
args - additional arguments passed to the property tester. Multiple arguments are seperated by commas. Each individual argument is converted into a Java base type using the same rules as defined for the value attribute of the test expression.
value - the expected value of the property. Can be omitted if the property is a boolean property. The test expression is supposed to return EvaluationResult.TRUE if the property matches the value and EvaluationResult.FALSE otherwise. The value attribute is converted into a Java base type using the following rules:
- the string "true" is converted into Boolean.TRUE
- the string "false" is converted into Boolean.FALSE
- if the string contains a dot then the interpreter tries to convert the value into a Float object. If this fails the string is treated as a java.lang.String
- if the string only consists of numbers then the interpreter converts the value in an Integer object.
- in all other cases the string is treated as a java.lang.String
- the conversion of the string into a Boolean, Float, or Integer can be suppressed by surrounding the string with single quotes. For example, the attribute value="'true'" is converted into the string "true"

比如我们要让含有main�Ҏ(gu��)��的Java文�g它的右键弹出菜单包含一个额外的选项“This is main class”�Q�需要编写如下的Plugin.xml�Q?/font>

< plugin >
    < extension
          point ="org.eclipse.ui.popupMenus" >
       < objectContribution
         id ="Advanced.PopupMenus"
        objectClass ="java.lang.Object" >
      < action id ="Advanced.PopupMenus.Action"
        label ="AdvancedPopupMenus"
        style ="pulldown"
        menubarPath ="additions"
        class ="advancedpopupmenus.popup.actions.AdvancedPopupMenusAction"
        enablesFor ="+" >
      action >
      < enablement >
           < test property ="advancedpopupmenus.popup.visable" />
      enablement >
      objectContribution >
    extension >
    < extension point ="org.eclipse.core.expressions.propertyTesters" >
    < propertyTester
    namespace ="advancedpopupmenus.popup"
   properties ="visable"
   type ="java.lang.Object"
   class ="advancedpopupmenus.popup.actions.VisablePropertyTester"
   id ="advancedpopupmenus.popup.propertyTesters.visable" >
    propertyTester >
    extension >
plugin >

我们需要检��在当前情况下是否需要显�C��个菜单项�Q��用扩展点 org.eclipse.core.expressions.propertyTesters �Q?br />
id         CDATA #REQUIRED
type       CDATA #REQUIRED
namespace CDATA #REQUIRED
properties CDATA #REQUIRED
class      CDATA #REQUIRED>

id - unique identifier for the property tester
type - the type to be extended by this property tester
namespace - a unique id determining the name space the properties are added to
properties - a comma separated list of properties provided by this property tester
class - the name of the class that implements the testing methods. The class must be public and extend org.eclipse.core.expressions.PropertyTester with a public 0-argument constructor.

�q�里只须注意 propertyTester的namespace和properties正好对应test的property�?br />
至于��(g��)��的逻辑我们在advancedpopupmenus.popup.actions.VisablePropertyTester中实玎ͼ��q�个�c�d��ȝ��承自org.eclipse.core.expressions.PropertyTester�?/font>

package advancedpopupmenus.popup.actions;

import org.eclipse.core.expressions.PropertyTester;
import org.eclipse.jdt.core.IMethod;
import org.eclipse.jdt.core.IType;
import org.eclipse.jdt.core.JavaModelException;
import org.eclipse.jdt.internal.core.CompilationUnit;

public class VisablePropertyTester extends PropertyTester
{
     public boolean test( Object receiver, String property, Object[] args,
            Object expectedValue )
    {
         if ( ! ( receiver instanceof CompilationUnit ) )
             return false ;
        CompilationUnit unit = (CompilationUnit) receiver;
         try
        {
            IType[] types = unit.getTypes( );
             if ( types == null )
                 return false ;
             for ( int i = 0 ; i < types.length; i ++ )
            {
                IMethod[] methods = types[i].getMethods( );
                 if ( methods == null )
                     return false ;
                 for ( int j = 0 ; j < methods.length; j ++ )
                {
                     if ( methods[j].isMainMethod( ) )
                         return true ;
                }
            }
        }
         catch ( JavaModelException e )
        {
            e.printStackTrace( );
        }
         return false ;
    }
}

我们只要判断接受的Java文�g中是否含有main�Ҏ(gu��)��Q�如果有�Q�则�q�回True�Q�没有则�q�回False�?br />
如果我们是要接受一个Web开发的配置文�g�Q�我们可以这样写�Q?/font>

< plugin >
    < extension
          point ="org.eclipse.ui.popupMenus" >
       < objectContribution
         id ="Advanced.PopupMenus"
        objectClass ="org.eclipse.core.resources.IFile"
        nameFilter ="*.xml" >
         < action id ="Advanced.PopupMenus.Action"
           label ="This is web xml"
           style ="pulldown"
           menubarPath ="additions"
           class ="advancedpopupmenus.popup.actions.AdvancedPopupMenusAction"
           enablesFor ="+" >
         action >
         < enablement >
              < test property ="advancedpopupmenus.popup.visable" />
         enablement >
      objectContribution >
    extension >
    < extension point ="org.eclipse.core.expressions.propertyTesters" >
       < propertyTester
             namespace ="advancedpopupmenus.popup"
            properties ="visable"
            type ="org.eclipse.core.resources.IFile"
            class ="advancedpopupmenus.popup.actions.VisablePropertyTester"
            id ="advancedpopupmenus.popup.propertyTesters.visable" >
       propertyTester >
    extension >
plugin >

注意和上一个例子不同的地方�Q�objectClass�Q�nameFileter和type(在上一个例子中�Q�我们也可以使用objectClass="org.eclipse.core.resources.IFile" nameFilter ="*.java" )�Q�相应的我们的VisablePropertyTester�c�M��要做一些改动：(x��)

package advancedpopupmenus.popup.actions;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.eclipse.core.expressions.PropertyTester;
import org.eclipse.core.resources.IFile;
import org.w3c.dom.Document;
import org.w3c.dom.DocumentType;

public class VisablePropertyTester extends PropertyTester
{
     public boolean test( Object receiver, String property, Object[] args,
            Object expectedValue )
    {
         if ( ! ( receiver instanceof IFile ) )
             return false ;
        IFile xml = (IFile) receiver;
         try
        {
            DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance( );
            DocumentBuilder db = dbf.newDocumentBuilder( );
            Document doc = db.parse( xml.getContents( ) );
            DocumentType type = doc.getDoctype( );
             if (type.getSystemId( ).equalsIgnoreCase( " http://java.sun.com/j2ee/dtds/web-app_2_2.dtd " )) return true ;
        }
         catch ( Exception e )
        {
            e.printStackTrace( );
        }
         return false ;
    }
}

�q�样�Ҏ(gu��)��不同的xml SystemID�Q�我们就能够知道到底�q�是哪一�U�框架的配置文�g�?ji��n)�?/font>

��D��?/a> 2008-02-23 10:29 发表评论

方便��理plugin或rcp的icons

Wed, 30 Jan 2008 09:24:00 GMT

转自�Q�http://blog.csdn.net/moneyice/archive/2006/04/25/677423.aspx

每个UI�E�序都离不开囄��Q�一般的Eclipse插�g�Q�在一个类中定义了(ji��n)若干�?r��n)态常量，每一个常量指定一个icon的名字，在程序中用到囄��的时候，通过�q�个帔R��计算得到囄��。Eclipse的插件一般规模较大，囄��很多�Q�而且分不同的像素�Q�彩�Ԍ��灰白�{�。这��h��利于�l�一的管理和开发�h员的沟通�?/div>

但�ƈ不是每个plugin或者rcp都要用到�q�么多图片，如果只有很少的图片的话，可以用图片的名字作�ؓ(f��)key,来存取图片。程序例子如下：(x��)

public class ImageShop {

private static ImageRegistry register = new ImageRegistry();

private static Set keys = new HashSet();

static {

initial();

}

public static ImageDescriptor getDescriptor(String key) {

ImageDescriptor image = register.getDescriptor(key);

if (image == null) {

image = ImageDescriptor.getMissingImageDescriptor();

}

return image;

}

public static Image get(String key) {

Image image = register.get(key);

if (image == null) {

image = ImageDescriptor.getMissingImageDescriptor().createImage();

}

return image;

}

public static String[] getImageKey() {

return (String[]) keys.toArray(new String[keys.size()]);

}

private static void initial() {

Bundle bundle = Platform.getBundle(PwdgatePlugin.ID);

URL url = bundle.getEntry("icons");

try {

url = Platform.asLocalURL(url);

} catch (Exception e) {

PwdgatePlugin.log("get root path", e);

}

File file = new File(url.getPath());

File[] images = file.listFiles();

for (int i = 0; i < images.length; i++) {

File f = images[i];

if (!f.isFile()) {

continue;

}

String name = f.getName();

if (!name.endsWith(".gif")) {

continue;

}

String key = name.substring(0, name.indexOf('.'));

URL fullPathString = bundle.getEntry("icons/" + name);

ImageDescriptor des = ImageDescriptor.createFromURL(fullPathString);

keys.add(key);

}

所有的囄��都放在根目录/icons目录下，在系�l�中如果用到名字为default.gif的图片，只要调用ImageShop.get(“default”)卛_��Q�有时在Action中需要用到ImageDescriptor�Q�调用ImageShop. getDescriptor(“default”)��可以取到�?/div>

��D��?/a> 2008-01-30 17:24 发表评论

欧美日韩电影一区,亚洲一区二区三区中文字幕在线 ,国产91对白在线播放

扩展Eclipse视图弹出菜单

方便���理plugin或rcp的icons

方便��理plugin或rcp的icons