| /******************************************************************************* |
| * Copyright (c) 2000, 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.jdt.internal.ui.actions; |
| |
| import org.eclipse.swt.custom.StyledText; |
| import org.eclipse.swt.graphics.Point; |
| |
| import org.eclipse.jface.text.IRegion; |
| import org.eclipse.jface.text.ITextSelection; |
| import org.eclipse.jface.text.ITextViewerExtension5; |
| import org.eclipse.jface.text.Region; |
| import org.eclipse.jface.text.source.ISourceViewer; |
| |
| import org.eclipse.jdt.internal.ui.javaeditor.JavaEditor; |
| import org.eclipse.jdt.internal.ui.text.JavaWordFinder; |
| |
| |
| public abstract class JDTQuickMenuAction extends QuickMenuAction { |
| |
| private JavaEditor fEditor; |
| |
| public JDTQuickMenuAction(String commandId) { |
| super(commandId); |
| } |
| |
| public JDTQuickMenuAction(JavaEditor editor, String commandId) { |
| super(commandId); |
| fEditor= editor; |
| } |
| |
| protected Point computeMenuLocation(StyledText text) { |
| if (fEditor == null || text != fEditor.getViewer().getTextWidget()) |
| return null; |
| return computeWordStart(); |
| } |
| |
| private Point computeWordStart() { |
| ITextSelection selection= (ITextSelection)fEditor.getSelectionProvider().getSelection(); |
| IRegion textRegion= JavaWordFinder.findWord(fEditor.getViewer().getDocument(), selection.getOffset()); |
| if (textRegion == null) |
| return null; |
| |
| IRegion widgetRegion= modelRange2WidgetRange(textRegion); |
| if (widgetRegion == null) |
| return null; |
| |
| int start= widgetRegion.getOffset(); |
| |
| StyledText styledText= fEditor.getViewer().getTextWidget(); |
| Point result= styledText.getLocationAtOffset(start); |
| result.y+= styledText.getLineHeight(start); |
| |
| if (!styledText.getClientArea().contains(result)) |
| return null; |
| return result; |
| } |
| |
| private IRegion modelRange2WidgetRange(IRegion region) { |
| ISourceViewer viewer= fEditor.getViewer(); |
| if (viewer instanceof ITextViewerExtension5) { |
| ITextViewerExtension5 extension= (ITextViewerExtension5)viewer; |
| return extension.modelRange2WidgetRange(region); |
| } |
| |
| IRegion visibleRegion= viewer.getVisibleRegion(); |
| int start= region.getOffset() - visibleRegion.getOffset(); |
| int end= start + region.getLength(); |
| if (end > visibleRegion.getLength()) |
| end= visibleRegion.getLength(); |
| |
| return new Region(start, end - start); |
| } |
| } |