Velocity UI

最近在研究XWiki，它是支援Velocity的，是以就順便調查了一把支援Velocity的編輯器。不過由于用慣了eclipse，自然是以eclipse的插件為主要調查方向了。

調查下來一共找到四個插件，其中一個叫veloedit，一個叫velocitywebedit,另外兩個都叫veloeclipse，不過确實是兩個不同的插件，一個在google code上，一個在sourceforge上。詳細資訊可以看參考資料。

功能簡介

1. veloedit 1.0.2

• Syntax-highlight for Velocity Template Language (VTL)
• Outline view with hierarchy of VTL directives and Velocimacro references
• Content assist for VTL directives and references -> auto-activation after the character '#' or '$' or manually via keyboard shortcut Ctrl+Space
• Automatic template validation while typing (the first syntax error is show in task list and the according line is marked in annotation column)
• Annotation hover with definition of references and template syntax errors
• Go to definition of variable or Velocimacro reference under current cursor position (via context menu or keyboard shortcut F3)
• Comment and uncomment blocks (via Ctrl+/ and Ctrl+\)
• Preference pages for definition of Velocity counter name and user-defined Velocity directives
• Preference pages for color settings of the editor's syntax highlighting
• Preference pages for Velocimacro library

2. veloeclipse(google code) 2.0.8

• Smart indentation of velocity directives ( on pressing return or when using tabs)
• XML support
• Jtidy integration
• code folding
• code Formatting
• Smart indentation of html tags( on pressing return or when using tabs)
• Syntax highlighting for both html and velocity
• Autocompletion and Content assist for tags,directives and references (Ctrl + space in html attribute values or when opening or closing tags)
• jumping to statring tag/directive when hovering on the closing tag/directive and then pressing Ctrl+Alt+ mouseclick
• opening html definitions on tags when pressing Ctrl+Alt+ mouseclick
• Tested on Eclipse 3.3 and 3.4
• Supports Velocity 1.6

3. veloeclipse(sourceforge) 2.0.6

• new XML support
• new JSP(X) und JSTL support
• new Jtidy integration
• new convert your code to XHTML
• new code folding
• new compare dialog before commiting formatting or Jtidy changes
• new code Formatting
• User defined macros
• Smart indentation of velocity directives ( on pressing return or when using tabs)
• Smart indentation of html tags( on pressing return or when using tabs)
• Syntax highlighting for both html and velocity
• Autocompletion and Content assist for tags,directives and references (Ctrl + space in html attribute values or when opening or closing tags)
• Preview html code
• jumping to statring tag/directive when hovering on the closing tag/directive and then pressing Ctrl+Alt+ mouseclick
• opening html definitions on tags when pressing Ctrl+Alt+ mouseclick

4. velocitywebedit

• Customizable Syntax Hilighting
• Content Assist

• Velocity Variables Names
• Velocity Variable Methods and Properties (using Reflection)
• Javascript Function Methods
• Velocity Macro Directives
• Style Sheet Class Names

• Velocity Outline
• HTML/XML Outline With XML Node Filtering and Intuitive Images
• Smart Indenting
• Customizable DTD for XML Content Assist
• Velocity Context Object Definitions at any Resorce Level

總結

其實veloeclipse(sourceforge) 是基于veloedit進行二次開發而成的，多了很多功能。 從以上的功能清單對比來看，veloeclipse(sourceforge)無疑是很有優勢的。不過我最近對google code挺有好感的，而且 veloeclipse(google code)也直接宣稱自己支援Velocity 1.6，是以就直接選用這一個了。等以後有更大需求的話，再判斷是否需要使用 veloeclipse(sourceforge)。

一點安裝經驗

這幾個插件除velocitywebedit外，都是通過線上的update方式安裝的，對于一些網速不怎麼樣或者無法通路網絡的人來說，确實是很痛苦的。我這裡以veloeclipse(google code)為例給個先下載下傳再安裝的手順。從 ​​http://veloeclipse.googlecode.com/svn/trunk/update/features/​​​ 頁面上，下載下傳feature的最新版本(如com.googlecode.veloeclipse.ui_2.0.8.jar)，從 ​​http://veloeclipse.googlecode.com/svn/trunk/update/plugins/​​ 頁面上，下載下傳plugin的最新版本(如com.googlecode.veloeclipse.ui_2.0.8.jar)。然後把兩個jar分别 解壓縮到同名檔案夾com.googlecode.veloeclipse.ui_2.0.8下，再把這兩個jar分别拷貝到eclipse的features和plugins目錄下，重新啟動eclipse就可以了。

我使用的是eclipse的galileo版本(3.5)，并且成功安裝了veloeclipse(google code)。

如果對eclipse插件的安裝方法感興趣，可以參考我的另外一篇部落格：​​eclipse中安裝插件的幾種方法​​