| /******************************************************************************* |
| * Copyright (c) 2004, 2006 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.core.internal.search.matching; |
| |
| import org.eclipse.core.resources.IFile; |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.wst.common.core.search.SearchMatch; |
| import org.eclipse.wst.common.core.search.SearchRequestor; |
| import org.eclipse.wst.common.core.search.pattern.SearchPattern; |
| import org.eclipse.wst.xml.core.internal.provisional.document.IDOMAttr; |
| import org.w3c.dom.Attr; |
| import org.w3c.dom.Element; |
| |
| /** |
| * This class contains matching implementation. |
| * <p> |
| * Subclasses of the PatternMatches should provide an implementation of the specific pattern matching. |
| * </p> |
| * <p> |
| * Subclasses of the PatternMatches should be set as adapters for the patterns that they match. |
| * </p> |
| * An implementation of {@link org.eclipse.wst.common.core.search.SearchParticipant#selectDocumentLocations()} will call |
| * { @link PatternMatcher#matches() } on the adapter on pattern matcher. |
| * |
| * An implementation of {@link org.eclipse.wst.common.core.search.SearchParticipant#locateMatches()} will call |
| * { @link PatternMatcher#locateMatches() } on the adapter on pattern matcher. |
| * |
| */ |
| public abstract class PatternMatcher { |
| |
| |
| /** |
| * This method does dive actual match location to the requestor if there are matches |
| */ |
| public abstract void locateMatches(SearchPattern pattern, IFile file, Element element, SearchRequestor requestor); |
| |
| /** |
| * This method only answers if the pattern matches element, it does not give actual match location |
| */ |
| public abstract boolean matches(SearchPattern pattern, Object element); |
| |
| protected SearchMatch createSearchMatch(IFile file, Attr attributeNode) |
| { |
| int start = 0; |
| int length = 0; |
| if(attributeNode instanceof IDOMAttr){ |
| IDOMAttr domAttr = (IDOMAttr)attributeNode; |
| start = domAttr.getValueRegionStartOffset(); |
| length = domAttr.getValueRegionText().length(); |
| } |
| SearchMatch match = new SearchMatch(attributeNode, start, length, file); |
| return match; |
| } |
| |
| protected void addMatch(SearchPattern pattern, IFile file, Attr attributeNode, SearchRequestor requestor) { |
| //System.out.println("addMatch " + pattern + " " + attributeNode.getName() + "=" + attributeNode.getValue()); |
| if (attributeNode != null) { |
| SearchMatch match = createSearchMatch(file, attributeNode); |
| if(requestor != null){ |
| try { |
| requestor.acceptSearchMatch(match); |
| } catch (CoreException e) { |
| //do nothing |
| } |
| } |
| } |
| } |
| |
| |
| } |