| /******************************************************************************* |
| * Copyright (c) 2000, 2009 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| * Sebastian Davids <sdavids@gmx.de> - bug 145326 [typing] toUpperCase incorrect selection |
| * Tom Eicher (Avaloq Evolution AG) - block selection mode |
| *******************************************************************************/ |
| package org.eclipse.ui.texteditor; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.ResourceBundle; |
| |
| import org.eclipse.swt.custom.StyledText; |
| |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.core.runtime.Status; |
| |
| import org.eclipse.jface.text.BadLocationException; |
| import org.eclipse.jface.text.IBlockTextSelection; |
| import org.eclipse.jface.text.IDocument; |
| import org.eclipse.jface.text.IRegion; |
| import org.eclipse.jface.text.ITextSelection; |
| import org.eclipse.jface.text.ITextViewerExtension; |
| import org.eclipse.jface.text.JFaceTextUtil; |
| import org.eclipse.jface.text.MultiTextSelection; |
| import org.eclipse.jface.text.Region; |
| import org.eclipse.jface.text.source.ISourceViewer; |
| |
| import org.eclipse.ui.internal.texteditor.TextEditorPlugin; |
| |
| /** |
| * Action that converts the current selection to lower case or upper case. |
| * @since 3.0 |
| */ |
| public class CaseAction extends TextEditorAction { |
| |
| /** <code>true</code> if this action converts to upper case, <code>false</code> otherwise. */ |
| private boolean fToUpper; |
| |
| /** |
| * Creates and initializes the action for the given text editor. |
| * The action configures its visual representation from the given resource |
| * bundle. |
| * |
| * @param bundle the resource bundle |
| * @param prefix a prefix to be prepended to the various resource keys |
| * (described in <code>ResourceAction</code> constructor), or <code>null</code> if none |
| * @param editor the text editor |
| * @param toUpper <code>true</code> if this is an uppercase action, <code>false</code> otherwise. |
| * |
| * @see ResourceAction#ResourceAction(ResourceBundle, String) |
| */ |
| public CaseAction(ResourceBundle bundle, String prefix, AbstractTextEditor editor, boolean toUpper) { |
| super(bundle, prefix, editor); |
| fToUpper= toUpper; |
| update(); |
| } |
| |
| @Override |
| public void run() { |
| ITextEditor editor= getTextEditor(); |
| if (editor == null) |
| return; |
| |
| if (!validateEditorInputState()) |
| return; |
| |
| ISourceViewer viewer= ((AbstractTextEditor) editor).getSourceViewer(); |
| if (viewer == null) |
| return; |
| |
| IDocument document= viewer.getDocument(); |
| if (document == null) |
| return; |
| |
| StyledText st= viewer.getTextWidget(); |
| if (st == null) |
| return; |
| |
| ITextSelection selection= (ITextSelection) viewer.getSelectionProvider().getSelection(); |
| |
| try { |
| if (JFaceTextUtil.isEmpty(viewer, selection)) |
| return; |
| |
| IRegion[] ranges= JFaceTextUtil.getCoveredRanges(viewer, selection); |
| List<IRegion> newRanges = new ArrayList<>(ranges.length); |
| if (ranges.length > 1 && viewer instanceof ITextViewerExtension) |
| ((ITextViewerExtension) viewer).getRewriteTarget().beginCompoundChange(); |
| int offsetShift = 0; |
| for (IRegion region : ranges) { |
| int newOffset = region.getOffset() + offsetShift; |
| String target = document.get(newOffset, region.getLength()); |
| String replacement= (fToUpper ? target.toUpperCase() : target.toLowerCase()); |
| if (!target.equals(replacement)) { |
| document.replace(newOffset, region.getLength(), replacement); |
| } |
| // https://bugs.eclipse.org/bugs/show_bug.cgi?id=145326: replacement might be |
| // larger than the original |
| int currentAdjustment = replacement.length() - target.length(); |
| offsetShift += currentAdjustment; |
| newRanges.add(new Region(newOffset, region.getLength() + currentAdjustment)); |
| } |
| if (ranges.length > 1 && viewer instanceof ITextViewerExtension) |
| ((ITextViewerExtension) viewer).getRewriteTarget().endCompoundChange(); |
| |
| // reinstall selection and move it into view |
| if (!(selection instanceof IBlockTextSelection)) { |
| viewer.getSelectionProvider() |
| .setSelection(new MultiTextSelection(viewer.getDocument(), newRanges.toArray(IRegion[]::new))); |
| } else { |
| viewer.getSelectionProvider().setSelection(selection); |
| } |
| // don't use the viewer's reveal feature in order to avoid jumping around |
| st.showSelection(); |
| } catch (BadLocationException x) { |
| TextEditorPlugin.getDefault().getLog() |
| .log(new Status(IStatus.ERROR, TextEditorPlugin.PLUGIN_ID, x.getMessage(), x)); |
| } |
| } |
| |
| } |