| /******************************************************************************* |
| * Copyright (c) 2010 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.ptp.internal.rdt.ui.editor; |
| |
| import org.eclipse.cdt.internal.ui.text.CWordFinder; |
| import org.eclipse.cdt.internal.ui.util.CHelpDisplayContext; |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.help.HelpSystem; |
| import org.eclipse.help.IContext; |
| import org.eclipse.help.IContextProvider; |
| import org.eclipse.jface.text.IDocument; |
| import org.eclipse.jface.text.IRegion; |
| import org.eclipse.jface.text.ITextSelection; |
| import org.eclipse.ptp.internal.rdt.ui.RDTHelpContextIds; |
| import org.eclipse.ui.texteditor.ITextEditor; |
| |
| /** |
| * @since 2.0 |
| */ |
| public class RemoteCEditorHelpContextProvider implements IContextProvider { |
| |
| private final ITextEditor editor; |
| |
| public RemoteCEditorHelpContextProvider(ITextEditor editor) { |
| this.editor = editor; |
| } |
| |
| public IContext getContext(Object arg0) { |
| String selected = getSelectedString(editor); |
| IContext context = HelpSystem.getContext(RDTHelpContextIds.REMOTE_C_CPP_EDITOR); |
| if (context != null) { |
| if (selected != null && selected.length() > 0) { |
| try { |
| context = new CHelpDisplayContext(context, editor, selected); |
| } catch (CoreException exc) { |
| } |
| } |
| } |
| return context; |
| } |
| |
| public int getContextChangeMask() { |
| return SELECTION; |
| } |
| |
| public String getSearchExpression(Object arg0) { |
| return getSelectedString(editor); |
| } |
| |
| private static String getSelectedString(ITextEditor editor) { |
| try { |
| ITextSelection selection = (ITextSelection) editor.getSite().getSelectionProvider().getSelection(); |
| IDocument document = editor.getDocumentProvider().getDocument(editor.getEditorInput()); |
| IRegion region = CWordFinder.findWord(document, selection.getOffset()); |
| if (region != null) |
| return document.get(region.getOffset(), region.getLength()); |
| } catch (Exception e) { |
| } |
| |
| return null; |
| } |
| } |