JPDA 架构研究21 - JDI的Debugger的UI部分
引入：
前面揭示了JDI的Debugger如何建立连接，发送和处理请求，这里我们专注于人机交互部分，Debugger的UI，它主要负责如何把人发出的操作转为请求，以及把请求操作反映在调试器的界面上。
分析：
这个插件主要都定义在org.eclipse.jdt.debug.ui_<Version>.jar中的plugin.xml中，它提供了各种人机交互的插件功能。打的比方，我们看编辑器功能：
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<
extension
point
=
"org.eclipse.ui.editorActions"
>
<
editorContribution
targetID
=
"org.eclipse.jdt.ui.CompilationUnitEditor"
id
=
"org.eclipse.jdt.debug.CompilationUnitEditor.BreakpointRulerActions"
>
<
action
label
=
"%AddBreakpoint.label"
class
=
"org.eclipse.debug.ui.actions.RulerToggleBreakpointActionDelegate"
actionID
=
"RulerDoubleClick"
id
=
"org.eclipse.jdt.debug.ui.actions.ManageBreakpointRulerAction"
>
</
action
>
</
editorContribution
>
<
editorContribution
targetID
=
"org.eclipse.jdt.ui.ClassFileEditor"
id
=
"org.eclipse.jdt.debug.ClassFileEditor.BreakpointRulerActions"
>
<
action
label
=
"%AddBreakpoint.label"
class
=
"org.eclipse.debug.ui.actions.RulerToggleBreakpointActionDelegate"
actionID
=
"RulerDoubleClick"
id
=
"org.eclipse.jdt.debug.ui.actions.ManageBreakpointRulerAction"
>
</
action
>
</
editorContribution
>
<
editorContribution
targetID
=
"org.eclipse.jdt.debug.ui.SnippetEditor"
id
=
"org.eclipse.jdt.debug.ui.JavaSnippetToolbarActions"
>
<
action
toolbarPath
=
"evaluationGroup"
id
=
"org.eclipse.jdt.debug.ui.SnippetExecute"
hoverIcon
=
"$nl$/icons/full/etool16/run_sbook.gif"
class
=
"org.eclipse.jdt.internal.debug.ui.actions.ExecuteAction"
disabledIcon
=
"$nl$/icons/full/dtool16/run_sbook.gif"
enablesFor
=
"+"
icon
=
"$nl$/icons/full/etool16/run_sbook.gif"
helpContextId
=
"execute_action_context"
label
=
"%Execute.label"
tooltip
=
"%Execute.tooltip"
>
<
selection
class
=
"org.eclipse.jface.text.ITextSelection"
>
</
selection
>
</
action
>
<
action
toolbarPath
=
"evaluationGroup"
id
=
"org.eclipse.jdt.debug.ui.SnippetDisplay"
hoverIcon
=
"$nl$/icons/full/etool16/disp_sbook.gif"
class
=
"org.eclipse.jdt.internal.debug.ui.actions.PopupDisplayAction"
disabledIcon
=
"$nl$/icons/full/dtool16/disp_sbook.gif"
enablesFor
=
"+"
icon
=
"$nl$/icons/full/etool16/disp_sbook.gif"
helpContextId
=
"display_action_context"
label
=
"%Display.label"
tooltip
=
"%Display.tooltip"
>
<
selection
class
=
"org.eclipse.jface.text.ITextSelection"
>
</
selection
>
</
action
>
<
action
toolbarPath
=
"evaluationGroup"
id
=
"org.eclipse.jdt.debug.ui.SnippetInspect"
hoverIcon
=
"$nl$/icons/full/etool16/insp_sbook.gif"
class
=
"org.eclipse.jdt.internal.debug.ui.actions.PopupInspectAction"
disabledIcon
=
"$nl$/icons/full/dtool16/insp_sbook.gif"
enablesFor
=
"+"
icon
=
"$nl$/icons/full/etool16/insp_sbook.gif"
helpContextId
=
"inspect_action_context"
label
=
"%Inspect.label"
tooltip
=
"%Inspect.tooltip"
>
<
selection
class
=
"org.eclipse.jface.text.ITextSelection"
>
</
selection
>
</
action
>
</
editorContribution
>
</
extension
>
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从这里看出，它支持好几个操作：如CompilationUnitEditor的打断点 ，ClassFileEditor的打断点等。
每个操作都有用到的图标，用到的action响应类等，有兴趣的可以看下。
本文转自 charles_wang888 51CTO博客，原文链接：http://blog.51cto.com/supercharles888/1588681，如需转载请自行联系原作者
