RCP（二）
1.在RCP应用中，我们或多或少会依赖一些eclipse官方或第三方的插件，而这些插件或者它们依赖的插件很有可能有自己的UI。这样就会造成在某些位置会出现一些不该出现的组件，为了删除这些组件，我们通常会这样做：
getWindowConfigurer().getActionBarConfigurer().getCoolBarManager().removeAll(); getWindowConfigurer().getActionBarConfigurer().getCoolBarManager().update(true); getWindowConfigurer().getActionBarConfigurer().getMenuManager().removeAll(); getWindowConfigurer().getActionBarConfigurer().getMenuManager().update(true);?在GsbpWorkbenchWindowAdvisor类中的postWindowOpen方法里面对菜单或者工具栏进行删除，这样做比较麻烦的是，我们通常不是希望删除所有。
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2.无意中在网上发现了这样一个思路，就是删除某些UI扩展点的扩展，这样也可以把不该出现的组件删掉。本人比较赞同这种方式，感觉删除扩展点会删除整块UI而不是某个菜单，这样就不容易漏掉，包括像向导，view，Editor，透视图等都可以移除。如果有必要，还可以通过删除扩展点的方式删除不必要的功能。
虽然网上提供了这种思路，但是具体的实现并不详细，所有自己写了一个类似删除的工具类，此类只提供了删除，是因为增加一般都是通过直接扩展的方式实现的。
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public class ExtensionUtil{ public static final String Registry_Type_Perspective = "Perspective"; public static final String Registry_Type_ActionSet = "ActionSet"; public static final String Registry_Type_Editor = "Editor"; public static final String Registry_Type_ExportWizard = "ExportWizard"; public static final String Registry_Type_ImportWizard = "ImportWizard"; public static final String Registry_Type_NewWizard = "NewWizard"; public static final String Registry_Type_View = "View"; /** * 暂时没有必要实现 */ public static final String Registry_Type_Theme = "Theme"; public static final String Registry_Type_WorkingSet = "WorkingSet"; public static final String Registry_Type_Intro = "Intro"; /** * 删除ActionSet扩展，根据其id * * @param id * @return */ public static boolean removeActionSetRegistrys(List<String> list) { ActionSetRegistry registry = WorkbenchPlugin.getDefault() .getActionSetRegistry(); IActionSetDescriptor[] descriptors = registry.getActionSets(); for (IActionSetDescriptor descriptor : descriptors) { if (StringUtil.existInList(list, descriptor.getId())) { IExtension extension = descriptor.getConfigurationElement() .getDeclaringExtension(); registry.removeExtension(extension, new Object[] { descriptor }); list.remove(descriptor.getId()); } } return true; } /** * 删除View扩展，根据其id * * @param id * @return */ public static boolean removeViewRegistrys(List<String> list) { ViewRegistry registry = (ViewRegistry) WorkbenchPlugin.getDefault() .getViewRegistry(); IViewDescriptor[] descriptors = registry.getViews(); for (IViewDescriptor descriptor : descriptors) { ViewDescriptor vDescriptor = (ViewDescriptor) descriptor; if (StringUtil.existInList(list, vDescriptor.getId())) { IExtension extension = vDescriptor.getConfigurationElement() .getDeclaringExtension(); registry.removeExtension(extension, new Object[] { descriptor }); } } return true; } /** * 删除Perspective扩展，根据其id * * @param id * @return */ public static boolean removePerspectiveRegistrys(List<String> list) { PerspectiveRegistry registry = (PerspectiveRegistry) WorkbenchPlugin .getDefault().getPerspectiveRegistry(); IPerspectiveDescriptor[] descriptors = registry.getPerspectives();// PerspectiveDescriptor for (IPerspectiveDescriptor descriptor : descriptors) { PerspectiveDescriptor pDescriptor = (PerspectiveDescriptor) descriptor; if (StringUtil.existInList(list, pDescriptor.getId())) { IExtension extension = pDescriptor.getConfigElement() .getDeclaringExtension(); registry.removeExtension(extension, new Object[] { descriptor }); } } return true; } /** * 删除Editor扩展，根据其list中的id * * @param id * @return */ public static boolean removeEditorRegistrys(List<String> list)//String id { EditorRegistry registry = (EditorRegistry)WorkbenchPlugin.getDefault().getEditorRegistry(); IEditorDescriptor[] descriptors = registry.getSortedEditorsFromPlugins(); for(IEditorDescriptor descriptor: descriptors){ EditorDescriptor eDescriptor = (EditorDescriptor)descriptor; if (StringUtil.existInList(list, eDescriptor.getId())) { IExtension extension = eDescriptor.getConfigurationElement().getDeclaringExtension(); registry.removeExtension(extension, new Object[] { descriptor }); } } return true; } /** * 删除ImportWizard扩展，根据其id * * @param id * @return */ public static boolean removeWizardRegistrys(String type,List<String> list)// String id { WorkbenchPlugin wPlugin = WorkbenchPlugin.getDefault(); IWizardRegistry registry = null; if (Registry_Type_ExportWizard.equals(type)) { registry = wPlugin.getExportWizardRegistry(); } else if (Registry_Type_ImportWizard.equals(type)) { registry = wPlugin.getImportWizardRegistry(); } else if (Registry_Type_NewWizard.equals(type)) { registry = wPlugin.getNewWizardRegistry(); } if (wPlugin == null) { return false; } IWizardCategory root = registry.getRootCategory(); segmentRemoveWizardRegistrys(registry, root,list); return true; } private static void segmentRemoveWizardRegistrys( IWizardRegistry registry, IWizardCategory root,List<String> list) { IWizardDescriptor[] descriptors = root.getWizards(); for (IWizardDescriptor descriptor : descriptors) { if (StringUtil.existInList(list, descriptor.getId())) { WorkbenchWizardElement wizard = (WorkbenchWizardElement) descriptor; IExtension extension = wizard.getConfigurationElement() .getDeclaringExtension(); if (registry instanceof ImportWizardRegistry) { ((ImportWizardRegistry) registry).removeExtension(extension, new Object[] { descriptor }); } else if (registry instanceof ExportWizardRegistry) { ((ExportWizardRegistry) registry).removeExtension(extension, new Object[] { descriptor }); } else if (registry instanceof NewWizardRegistry) { ((NewWizardRegistry) registry).removeExtension(extension, new Object[] { descriptor }); } } } IWizardCategory[] categorys = root.getCategories(); for (IWizardCategory category : categorys) { segmentRemoveWizardRegistrys(registry, category,list); } }}??
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