Eclipse RCP编辑器关闭按钮的屏蔽方法

 

通过设断点跟踪Eclipse RCP的代码, 发现编辑器上的关闭按钮其实并不属于Editor控件的一部分,而是editor所属容器的,具体层次结构没有深入去研究,总之按钮是加在AbstractTabFolder这样一个控件上的。RCP在启动时，会通过默认的WorkbenchPresentationFactory在生成GUI上的DefaultTabFolder，并且默认具有关闭按钮。因此屏蔽关闭按钮就从此入手。

　　首先，在ApplicationWorkbenchWindowAdvisor类的preWindowOpen()方法中注册我们自己定制的PresentationFactory。

configurer.setPresentationFactory(new UnCloseableEditorPresentationFactory()); 

UnCloseableEditorPresentationFactory类继承WorkbenchPresentationFactory类，为了不影响别的GUI功能，我们只需要重写public StackPresentation createEditorPresentation(Composite parent, IStackPresentationSite site)方法中的关于设置TableFolder的部分，具体如下:

import org.eclipse.jface.preference.IPreferenceStore; import org.eclipse.swt.SWT; import org.eclipse.swt.widgets.Composite; import org.eclipse.ui.IWorkbenchPreferenceConstants; import org.eclipse.ui.PlatformUI; import org.eclipse.ui.internal.presentations.defaultpresentation.DefaultMultiTabListener; import org.eclipse.ui.internal.presentations.defaultpresentation.DefaultSimpleTabListener; import org.eclipse.ui.internal.presentations.defaultpresentation.DefaultTabFolder; import org.eclipse.ui.internal.presentations.defaultpresentation.DefaultThemeListener; import org.eclipse.ui.internal.presentations.util.PresentablePartFolder; import org.eclipse.ui.internal.presentations.util.StandardEditorSystemMenu; import org.eclipse.ui.internal.presentations.util.TabbedStackPresentation; import org.eclipse.ui.presentations.IStackPresentationSite; import org.eclipse.ui.presentations.StackPresentation; import org.eclipse.ui.presentations.WorkbenchPresentationFactory; public class UnCloseableEditorPresentationFactory extends WorkbenchPresentationFactory { private static int editorTabPosition = PlatformUI.getPreferenceStore().getInt(IWorkbenchPreferenceConstants.EDITOR_TAB_POSITION); @Override public StackPresentation createEditorPresentation(Composite parent, IStackPresentationSite site) { // TODO Auto-generated method stub DefaultTabFolder folder = new UnCloseableEditorFolder( parent, editorTabPosition | SWT.BORDER, site.supportsState(IStackPresentationSite.STATE_MINIMIZED), site.supportsState(IStackPresentationSite.STATE_MAXIMIZED)); final IPreferenceStore store = PlatformUI.getPreferenceStore(); if (store.contains(IWorkbenchPreferenceConstants.EDITOR_MINIMUM_CHARACTERS)) { final int minimumCharacters = store.getInt(IWorkbenchPreferenceConstants.EDITOR_MINIMUM_CHARACTERS); if (minimumCharacters >= 0) { folder.setMinimumCharacters(minimumCharacters); } } PresentablePartFolder partFolder = new PresentablePartFolder(folder); TabbedStackPresentation result = new TabbedStackPresentation(site, partFolder, new StandardEditorSystemMenu(site)); DefaultThemeListener themeListener = new DefaultThemeListener(folder, result.getTheme()); result.getTheme().addListener(themeListener); new DefaultMultiTabListener(result.getApiPreferences(), IWorkbenchPreferenceConstants.SHOW_MULTIPLE_EDITOR_TABS, folder); new DefaultSimpleTabListener(result.getApiPreferences(), IWorkbenchPreferenceConstants.SHOW_TRADITIONAL_STYLE_TABS, folder); return result; } }  

 

最后就是定义我们自己的UnCloseableEditorFolder了：

import org.eclipse.swt.SWT; import org.eclipse.swt.widgets.Composite; import org.eclipse.ui.internal.presentations.defaultpresentation.DefaultTabFolder; import org.eclipse.ui.internal.presentations.util.AbstractTabItem; public class UnCloseableEditorFolder extends DefaultTabFolder { public UnCloseableEditorFolder(Composite parent, int flags, boolean allowMin, boolean allowMax) { super(parent, flags, allowMin, allowMax); // TODO Auto-generated constructor stub } public AbstractTabItem add(int index, int flags) { return super.add(index, flags ^ SWT.CLOSE); } }  

以上就是需要定制的代码