| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| package org.netbeans.modules.j2ee.persistence.editor; |
| |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map.Entry; |
| import java.util.Stack; |
| import java.util.logging.Level; |
| import java.util.logging.Logger; |
| import javax.swing.text.BadLocationException; |
| import javax.swing.text.Document; |
| import org.netbeans.api.lexer.Token; |
| import org.netbeans.api.xml.lexer.XMLTokenId; |
| import org.netbeans.modules.xml.text.api.dom.SyntaxElement; |
| import org.netbeans.modules.xml.text.api.dom.XMLSyntaxSupport; |
| import org.w3c.dom.Attr; |
| import org.w3c.dom.NamedNodeMap; |
| import org.w3c.dom.Node; |
| |
| /** |
| * Tracks context information for XML files |
| * |
| * @author Rohan Ranade |
| */ |
| public class DocumentContext { |
| |
| private static final Logger LOGGER = Logger.getLogger(DocumentContext.class.getName()); |
| private Document document; |
| private XMLSyntaxSupport syntaxSupport; |
| private int caretOffset = -1; |
| private SyntaxElement element; |
| private Token<XMLTokenId> token; |
| private int tokenOffset; |
| private boolean valid = false; |
| private SyntaxElement docRoot; |
| private String defaultNamespace; |
| private HashMap<String, String> declaredNamespaces = |
| new HashMap<String, String>(); |
| private String schemaLocation; |
| private String noNamespaceSchemaLocation; |
| private final String VERSION = "version";//NOI18N |
| private String persistenceVersion = null; |
| |
| DocumentContext(Document document) { |
| this.document = document; |
| try { |
| this.syntaxSupport = XMLSyntaxSupport.getSyntaxSupport(document); |
| } catch (ClassCastException cce) { |
| LOGGER.log(Level.FINE, cce.getMessage()); |
| this.syntaxSupport = XMLSyntaxSupport.createSyntaxSupport(document); |
| } |
| } |
| |
| public void reset(int caretOffset) { |
| this.caretOffset = caretOffset; |
| initialize(); |
| } |
| |
| private void initialize() { |
| valid = true; |
| declaredNamespaces.clear(); |
| try { |
| element = syntaxSupport.getElementChain(caretOffset); |
| int[] off = new int[2]; |
| token = syntaxSupport.getNextToken(caretOffset, off); |
| tokenOffset = off[0]; |
| this.docRoot = ContextUtilities.getRoot(element); |
| populateNamespaces(); |
| } catch (BadLocationException ex) { |
| // No context support available in this case |
| valid = false; |
| } |
| } |
| |
| public boolean isValid() { |
| return this.valid; |
| } |
| |
| public Token<XMLTokenId> getCurrentToken() { |
| if (isValid()) { |
| return token; |
| } else { |
| return null; |
| } |
| } |
| |
| public int getCurrentTokenOffset() { |
| return tokenOffset; |
| } |
| |
| public String getCurrentTokenImage() { |
| if (isValid()) { |
| return token.text().toString(); |
| } else { |
| return null; |
| } |
| } |
| |
| public SyntaxElement getCurrentElement() { |
| return this.element; |
| } |
| |
| public Document getDocument() { |
| return this.document; |
| } |
| |
| public String lookupNamespacePrefix(String prefix) { |
| return declaredNamespaces.get(prefix); |
| } |
| |
| public String getVersion() { |
| return persistenceVersion; |
| } |
| |
| public String getNamespacePrefix(String namespace) { |
| for(Entry<String, String> entry : declaredNamespaces.entrySet()) { |
| if(entry.getValue().equals(namespace)) { |
| return entry.getKey(); |
| } |
| } |
| |
| return null; |
| } |
| |
| public Collection<String> getDeclaredNamespaces() { |
| return declaredNamespaces.values(); |
| } |
| |
| public SyntaxElement getDocRoot() { |
| return docRoot; |
| } |
| |
| public int getCaretOffset() { |
| return this.caretOffset; |
| } |
| |
| private void populateNamespaces() { |
| // Find the a start or empty tag just before the current syntax element. |
| SyntaxElement element = this.element; |
| while (element != null && !syntaxSupport.isStartTag(element) && !syntaxSupport.isEmptyTag(element)) { |
| element = element.getPrevious(); |
| } |
| if (element == null) { |
| return; |
| } |
| |
| // To find all namespace declarations active at the caret offset, we |
| // need to look at xmlns attributes of the current element and its ancestors. |
| Node node = (Node)element; |
| while (node != null && element != null) { |
| if (syntaxSupport.isStartTag(element) || syntaxSupport.isEmptyTag(element)) { |
| NamedNodeMap attributes = node.getAttributes(); |
| for (int index = 0; index < attributes.getLength(); index++) { |
| Attr attr = (Attr) attributes.item(index); |
| String attrName = attr.getName(); |
| String attrValue = attr.getValue(); |
| if (attrName == null || attrValue == null) { |
| continue; |
| } |
| String prefix = ContextUtilities.getPrefixFromNamespaceDeclaration(attrName); |
| if (prefix == null) { |
| continue; |
| } |
| // Avoid overwriting a namespace declaration "closer" to the caret offset. |
| if (!declaredNamespaces.containsKey(prefix)) { |
| declaredNamespaces.put(prefix, attrValue); |
| } |
| Node tmp = attributes.getNamedItem(VERSION); |
| if(tmp!=null) { |
| persistenceVersion = tmp.getNodeValue(); |
| } |
| } |
| } |
| node = node.getParentNode(); |
| element = syntaxSupport.getSyntaxElement(node); |
| } |
| } |
| |
| public String getNoNamespaceSchemaLocation() { |
| return noNamespaceSchemaLocation; |
| } |
| |
| public String getSchemaLocation() { |
| return schemaLocation; |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (obj == null) { |
| return false; |
| } |
| if (getClass() != obj.getClass()) { |
| return false; |
| } |
| final DocumentContext other = (DocumentContext) obj; |
| if (this.document != other.document && (this.document == null || !this.document.equals(other.document))) { |
| return false; |
| } |
| return true; |
| } |
| |
| @Override |
| public int hashCode() { |
| int hash = 5; |
| hash = 61 * hash + (this.document != null ? this.document.hashCode() : 0); |
| return hash; |
| } |
| |
| public <T> T runWithSequence(XMLSyntaxSupport.SequenceCallable<T> callable) throws BadLocationException { |
| return syntaxSupport.runWithSequence(caretOffset, callable); |
| } |
| } |