| /******************************************************************************* |
| * Copyright (c) 2000, 2007 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.search.internal.ui.text; |
| |
| import org.eclipse.core.resources.IFile; |
| |
| import org.eclipse.ui.IEditorDescriptor; |
| import org.eclipse.ui.IEditorInput; |
| import org.eclipse.ui.IEditorPart; |
| import org.eclipse.ui.IEditorReference; |
| import org.eclipse.ui.IEditorRegistry; |
| import org.eclipse.ui.IReusableEditor; |
| import org.eclipse.ui.IViewReference; |
| import org.eclipse.ui.IWorkbenchPage; |
| import org.eclipse.ui.IWorkbenchPartReference; |
| import org.eclipse.ui.PartInitException; |
| import org.eclipse.ui.ide.IDE; |
| import org.eclipse.ui.part.FileEditorInput; |
| |
| import org.eclipse.search.ui.NewSearchUI; |
| |
| import org.eclipse.search.internal.ui.SearchPlugin; |
| |
| public class EditorOpener { |
| |
| private IEditorReference fReusedEditor; |
| |
| public IEditorPart open(IFile file, boolean activate) throws PartInitException { |
| IWorkbenchPage wbPage= SearchPlugin.getActivePage(); |
| if (NewSearchUI.reuseEditor()) |
| return showWithReuse(file, wbPage, activate); |
| return showWithoutReuse(file, wbPage, activate); |
| } |
| |
| private IEditorPart showWithoutReuse(IFile file, IWorkbenchPage wbPage, boolean activate) throws PartInitException { |
| return IDE.openEditor(wbPage, file, activate); |
| } |
| |
| private IEditorPart showWithReuse(IFile file, IWorkbenchPage wbPage, boolean activate) throws PartInitException { |
| String editorID= getEditorID(file); |
| return showInEditor(wbPage, file, editorID, activate); |
| } |
| |
| |
| private String getEditorID(IFile file) throws PartInitException { |
| IEditorDescriptor desc= IDE.getEditorDescriptor(file); |
| if (desc == null) |
| return SearchPlugin.getDefault().getWorkbench().getEditorRegistry().findEditor(IEditorRegistry.SYSTEM_EXTERNAL_EDITOR_ID).getId(); |
| return desc.getId(); |
| } |
| |
| private IEditorPart showInEditor(IWorkbenchPage page, IFile file, String editorId, boolean activate) throws PartInitException { |
| IEditorInput input= new FileEditorInput(file); |
| IEditorPart editor= page.findEditor(input); |
| if (editor != null) { |
| page.bringToTop(editor); |
| if (activate) { |
| page.activate(editor); |
| } |
| return editor; |
| } |
| IEditorReference reusedEditorRef= fReusedEditor; |
| if (reusedEditorRef != null) { |
| boolean isOpen= reusedEditorRef.getEditor(false) != null; |
| boolean canBeReused= isOpen && !reusedEditorRef.isDirty() && !reusedEditorRef.isPinned(); |
| if (canBeReused) { |
| boolean showsSameInputType= reusedEditorRef.getId().equals(editorId); |
| if (!showsSameInputType) { |
| if (isOkToClose(page)) // workaround for https://bugs.eclipse.org/bugs/show_bug.cgi?id=188587 |
| page.closeEditors(new IEditorReference[] { reusedEditorRef }, false); |
| fReusedEditor= null; |
| } else { |
| editor= reusedEditorRef.getEditor(true); |
| if (editor instanceof IReusableEditor) { |
| ((IReusableEditor) editor).setInput(input); |
| page.bringToTop(editor); |
| if (activate) { |
| page.activate(editor); |
| } |
| return editor; |
| } |
| } |
| } |
| } |
| editor= page.openEditor(input, editorId, activate); |
| if (editor instanceof IReusableEditor) { |
| IEditorReference reference= (IEditorReference) page.getReference(editor); |
| fReusedEditor= reference; |
| } else { |
| fReusedEditor= null; |
| } |
| return editor; |
| } |
| |
| private boolean isOkToClose(IWorkbenchPage page) { |
| IWorkbenchPartReference searchViewRef= page.getActivePartReference(); |
| return searchViewRef == null || |
| !NewSearchUI.SEARCH_VIEW_ID.equals(searchViewRef.getId()) || |
| !((IViewReference) searchViewRef).isFastView(); |
| } |
| |
| } |