在Eclipse RCP中屏蔽Eclipse擴展點自帶的General功能

小不點的書房齋 2011-06-20

展開全文

在自己的Eclipse的RCP產(chǎn)品中，可能經(jīng)常要集成第三方的插件，來滿足特定的功能需要，但是對于一些不需要的功能，通常的做法是該插件修改源代碼，如果出于許可或非開源的原因，無法修改，或刪除其源代碼，就要考慮如何在RCP中控制其擴展點的加載。

可以在RCP的WorkbenchWindowAdvisor.preWindowOpen中，取到所有加載的擴展點，然后進行相應的過濾處理首先使用WorkbenchPlugin.getDefault（）得到WorkbenchPlugin;。通過WorkbenchPlugin可以獲取各種類型的擴展點的注冊表WorkbenchPlugin 。getActionSetRegistry（）得到的注冊表中存有所有的ActionSet擴展點; WorkbenchPlugin.getViewRegistry（）得到了所有的意見，擴展點通過注冊表的removeExtension（）可以去掉相應的擴展點，使其不被加載到RCP中。

具體使用方法如下：

1、（移除wizard中的General）// 移除文件菜單下導入功能中自帶的General

AbstractExtensionWizardRegistry importWizardRegistry = (AbstractExtensionWizardRegistry) WorkbenchPlugin

.getDefault().getImportWizardRegistry();

IWizardCategory[] categories = wizardRegistry.getRootCategory().getCategories();

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

if(categories[i].getId().equals("org.eclipse.ui.Basic")){

IWizardDescriptor[] wizard = categories[i].getWizards();

IExtensionRegistry registry = Platform.getExtensionRegistry();

IExtensionPoint point = registry.getExtensionPoint("org.eclipse.ui.importWizards");

IExtension[] extensions = point.getExtensions();

for (int j = 0; j < wizard.length; j++){

wizardRegistry.removeExtension(extensions[i],

new Object[] {wizard[j] });

}

2、（移除wizard中的General）// 移除文件菜單下導出功能中自帶的General

AbstractExtensionWizardRegistry exportWizardRegistry = (AbstractExtensionWizardRegistry) WorkbenchPlugin

.getDefault().getExportWizardRegistry();

IWizardCategory[] categories = wizardRegistry.getRootCategory().getCategories();

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

if(categories[i].getId().equals("org.eclipse.ui.Basic")){

IWizardDescriptor[] wizard = categories[i].getWizards();

IExtensionRegistry registry = Platform.getExtensionRegistry();

IExtensionPoint point = registry.getExtensionPoint("org.eclipse.ui.exportWizards");

IExtension[] extensions = point.getExtensions();

for (int j = 0; j < wizard.length; j++){

wizardRegistry.removeExtension(extensions[i],

new Object[] {wizard[j] });

}

3、（移除view中的General）// 移除窗口菜單下顯示視圖中自帶的General

ViewRegistry viewRegistry = (ViewRegistry) WorkbenchPlugin.getDefault().getViewRegistry();

IViewCategory[] viewCat = viewRegistry.getCategories();

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

if(viewCat[i].getId().equals("org.eclipse.ui")){

IViewDescriptor[] viewDes = viewCat[i].getViews();

IExtensionRegistry registry = Platform.getExtensionRegistry();

IExtensionPoint point = registry.getExtensionPoint("org.eclipse.ui.views");

IExtension[] extensions = point.getExtensions();

for (int j = 0; j < viewDes.length; j++){

if(!viewDes[j].getId().equals("org.eclipse.ui.console.ConsoleView")){

viewRegistry.removeExtension(extensions[i],

new Object[] {viewDes[j] });

}

4、（移除ActionSet中的General）

ActionSetRegistry reg = WorkbenchPlugin.getDefault().getActionSetRegistry();
IActionSetDescriptor[] actionSets = reg.getActionSets();
// removing annoying gotoLastPosition Message.
String actionSetId = "org.eclipse.ui.edit.text.actionSet.navigation"; //$NON-NLS-1$
for (int i = 0; i <actionSets.length; i++)
{
    if (!actionSets[i].getId().equals(actionSetId))
        continue;
        IExtension ext = actionSets[i].getConfigurationElement()
            .getDeclaringExtension();
        reg.removeExtension(ext, new Object[] { actionSets[i] });
}
// Removing convert line delimiters menu.
actionSetId = "org.eclipse.ui.edit.text.actionSet.convertLineDelimitersTo"; //$NON-NLS-1$
for (int i = 0; i <actionSets.length; i++)
{
    if (!actionSets[i].getId().equals(actionSetId))
        continue;
    IExtension ext = actionSets[i].getConfigurationElement()
            .getDeclaringExtension();
   reg.removeExtension(ext, new Object[] { actionSets[i] });
}