| /******************************************************************************* |
| * Copyright (c) 2008, 2018 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.ui.internal.editor; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.eclipse.core.runtime.IAdapterFactory; |
| import org.eclipse.jface.text.IRegion; |
| import org.eclipse.jface.text.Region; |
| import org.eclipse.wst.sse.core.internal.provisional.IStructuredModel; |
| import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocumentRegion; |
| import org.eclipse.wst.sse.core.internal.provisional.text.ITextRegion; |
| import org.eclipse.wst.sse.core.internal.provisional.text.ITextRegionCollection; |
| import org.eclipse.wst.sse.core.internal.provisional.text.ITextRegionList; |
| import org.eclipse.wst.sse.ui.SelectionConverter; |
| import org.eclipse.wst.xml.core.internal.provisional.document.IDOMAttr; |
| import org.eclipse.wst.xml.core.internal.provisional.document.IDOMModel; |
| import org.eclipse.wst.xml.core.internal.provisional.document.IDOMNode; |
| import org.eclipse.wst.xml.core.internal.regions.DOMRegionContext; |
| import org.w3c.dom.NamedNodeMap; |
| |
| /** |
| * @author nitin |
| * |
| */ |
| public class DOMSelectionConverterFactory implements IAdapterFactory { |
| |
| private static final Class<?>[] ADAPTER_LIST = new Class[]{SelectionConverter.class}; |
| |
| public static class XMLSelectionConverter extends SelectionConverter { |
| public Object[] getElements(IStructuredModel model, int start, int end) { |
| Object[] localSelectedStructures = null; |
| if (model != null) { |
| IDOMNode region = (IDOMNode)model.getIndexedRegion(start); |
| if (region != null) { |
| if (end <= region.getEndOffset()) { |
| // single selection |
| localSelectedStructures = new Object[1]; |
| localSelectedStructures[0] = region; |
| } else { |
| List<IDOMNode> structures = new ArrayList<>(2); |
| |
| IDOMNode node = region; |
| while(node != null) { |
| structures.add(node); |
| IDOMNode next = (IDOMNode)node.getNextSibling(); |
| if(next == null) { |
| next = (IDOMNode)node.getParentNode(); |
| } |
| if(next != null) { |
| if(next.getEndOffset() > end) { |
| break; |
| } |
| } |
| node = next; |
| } |
| localSelectedStructures = structures.toArray(); |
| } |
| } |
| } |
| if (localSelectedStructures == null) { |
| localSelectedStructures = new Object[0]; |
| } |
| |
| Object[] objects = localSelectedStructures; |
| // narrow single selected Elements into Attrs if possible |
| if (objects.length == 1) { |
| if (objects[0] instanceof IDOMNode) { |
| IDOMNode node = (IDOMNode) objects[0]; |
| NamedNodeMap attributes = node.getAttributes(); |
| if (attributes != null) { |
| for (int i = 0; i < attributes.getLength(); i++) { |
| IDOMAttr attribute = (IDOMAttr) attributes.item(i); |
| if (attribute.contains(start) && attribute.contains(end)) { |
| objects[0] = attribute; |
| break; |
| } |
| } |
| } |
| } |
| } |
| return objects; |
| } |
| |
| IRegion getNameRegion(ITextRegionCollection collection) { |
| ITextRegionList regions = collection.getRegions(); |
| int count = collection.getNumberOfRegions(); |
| for (int i = 0; i < count; i++) { |
| ITextRegion region = regions.get(i); |
| if (DOMRegionContext.XML_TAG_NAME.equals(region.getType())) { |
| return new Region(collection.getStartOffset(region), region.getTextLength()); |
| } |
| if (DOMRegionContext.XML_DOCTYPE_NAME.equals(region.getType())) { |
| return new Region(collection.getStartOffset(region), region.getTextLength()); |
| } |
| if (DOMRegionContext.XML_ELEMENT_DECL_NAME.equals(region.getType())) { |
| return new Region(collection.getStartOffset(region), region.getTextLength()); |
| } |
| if (DOMRegionContext.XML_ATTLIST_DECL_NAME.equals(region.getType())) { |
| return new Region(collection.getStartOffset(region), region.getTextLength()); |
| } |
| if (DOMRegionContext.XML_COMMENT_TEXT.equals(region.getType())) { |
| String commented = collection.getText(region); |
| int inset = 0; |
| while (inset < region.getTextLength() && Character.isWhitespace(commented.charAt(inset))) { |
| inset++; |
| } |
| return new Region(collection.getStartOffset(region) + inset, 0); |
| } |
| } |
| return null; |
| } |
| |
| @Override |
| public IRegion getSelectionRegion(Object o) { |
| if (o instanceof IDOMNode) { |
| IStructuredDocumentRegion documentRegion = ((IDOMNode)o).getFirstStructuredDocumentRegion(); |
| IRegion nameRegion = getNameRegion(documentRegion); |
| if (nameRegion != null) { |
| return nameRegion; |
| } |
| } |
| return super.getSelectionRegion(o); |
| } |
| |
| } |
| |
| private static final Object selectionConverter = new XMLSelectionConverter(); |
| |
| /** |
| * |
| */ |
| public DOMSelectionConverterFactory() { |
| } |
| |
| @SuppressWarnings("unchecked") |
| @Override |
| public <T> T getAdapter(Object adaptableObject, Class<T> adapterType) { |
| if (adaptableObject instanceof IDOMModel && SelectionConverter.class.equals(adapterType)) |
| return (T) selectionConverter; |
| return null; |
| } |
| |
| public Class<?>[] getAdapterList() { |
| return ADAPTER_LIST; |
| } |
| |
| } |