| /******************************************************************************* |
| * Copyright (c) 2005 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.wst.xml.ui.internal.actions; |
| |
| import org.eclipse.jface.action.IAction; |
| import org.eclipse.jface.text.BadLocationException; |
| import org.eclipse.jface.text.IDocument; |
| import org.eclipse.jface.text.ITextSelection; |
| import org.eclipse.jface.text.TextSelection; |
| import org.eclipse.jface.viewers.ISelection; |
| import org.eclipse.jface.viewers.ISelectionProvider; |
| import org.eclipse.swt.widgets.Event; |
| import org.eclipse.ui.IActionDelegate2; |
| import org.eclipse.ui.IEditorActionDelegate; |
| import org.eclipse.ui.IEditorPart; |
| import org.eclipse.ui.IViewActionDelegate; |
| import org.eclipse.ui.IViewPart; |
| import org.eclipse.ui.texteditor.ITextEditor; |
| import org.eclipse.wst.xml.ui.internal.Logger; |
| |
| /** |
| * Abstract comment action delegate for XML editors |
| */ |
| abstract public class AbstractCommentActionXMLDelegate implements IEditorActionDelegate, IActionDelegate2, IViewActionDelegate { |
| static final String CLOSE_COMMENT = "-->"; //$NON-NLS-1$ |
| static final String OPEN_COMMENT = "<!--"; //$NON-NLS-1$ |
| |
| IEditorPart fEditor; |
| |
| public void setActiveEditor(IAction action, IEditorPart targetEditor) { |
| fEditor = targetEditor; |
| } |
| |
| public void dispose() { |
| // nulling out just in case |
| fEditor = null; |
| } |
| |
| public void runWithEvent(IAction action, Event event) { |
| run(action); |
| } |
| |
| public void run(IAction action) { |
| if (fEditor instanceof ITextEditor) { |
| ITextEditor textEditor = (ITextEditor) fEditor; |
| IDocument document = textEditor.getDocumentProvider().getDocument(textEditor.getEditorInput()); |
| if (document != null) { |
| // get current text selection |
| ITextSelection textSelection = getCurrentSelection(); |
| if (textSelection.isEmpty()) |
| return; |
| |
| processAction(document, textSelection); |
| } |
| } |
| } |
| |
| public void init(IViewPart view) { |
| // do nothing |
| } |
| |
| public void selectionChanged(IAction action, ISelection selection) { |
| // do nothing |
| } |
| |
| private ITextSelection getCurrentSelection() { |
| if (fEditor instanceof ITextEditor) { |
| ISelectionProvider provider = ((ITextEditor) fEditor).getSelectionProvider(); |
| if (provider != null) { |
| ISelection selection = provider.getSelection(); |
| if (selection instanceof ITextSelection) |
| return (ITextSelection) selection; |
| } |
| } |
| return TextSelection.emptySelection(); |
| } |
| |
| abstract void processAction(IDocument document, ITextSelection textSelection); |
| |
| void removeOpenCloseComments(IDocument document, int offset, int length) { |
| try { |
| int adjusted_length = length; |
| |
| // remove open comments |
| String string = document.get(offset, length); |
| int index = string.lastIndexOf(OPEN_COMMENT); |
| while (index != -1) { |
| document.replace(offset + index, OPEN_COMMENT.length(), ""); //$NON-NLS-1$ |
| index = string.lastIndexOf(OPEN_COMMENT, index - 1); |
| adjusted_length -= OPEN_COMMENT.length(); |
| } |
| |
| // remove close comments |
| string = document.get(offset, adjusted_length); |
| index = string.lastIndexOf(CLOSE_COMMENT); |
| while (index != -1) { |
| document.replace(offset + index, CLOSE_COMMENT.length(), ""); //$NON-NLS-1$ |
| index = string.lastIndexOf(CLOSE_COMMENT, index - 1); |
| } |
| } |
| catch (BadLocationException e) { |
| Logger.log(Logger.WARNING_DEBUG, e.getMessage(), e); |
| } |
| } |
| } |