| /******************************************************************************* |
| * Copyright (c) 2008-2010 Sonatype, Inc. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * Sonatype, Inc. - initial API and implementation |
| *******************************************************************************/ |
| |
| package org.eclipse.m2e.model.edit.pom.translators; |
| |
| import java.util.Collections; |
| import java.util.List; |
| |
| import org.w3c.dom.Element; |
| import org.w3c.dom.Node; |
| import org.w3c.dom.NodeList; |
| import org.w3c.dom.Text; |
| |
| import org.eclipse.emf.ecore.EAttribute; |
| import org.eclipse.emf.ecore.EObject; |
| import org.eclipse.emf.ecore.EStructuralFeature; |
| import org.eclipse.emf.ecore.util.EcoreUtil; |
| import org.eclipse.wst.common.internal.emf.utilities.ExtendedEcoreUtil; |
| import org.eclipse.wst.sse.core.internal.provisional.INodeAdapter; |
| import org.eclipse.wst.sse.core.internal.provisional.INodeNotifier; |
| |
| |
| /** |
| * Handles notifications from the DOM that a simple text value has changed. |
| * |
| * @author Mike Poindexter |
| */ |
| class ValueUpdateAdapter extends TranslatorAdapter implements INodeAdapter { |
| /** |
| * |
| */ |
| private EObject modelObject; |
| |
| private EStructuralFeature feature; |
| |
| private List<Node> linkedWhitespaceNodes = Collections.emptyList(); |
| |
| public ValueUpdateAdapter(SSESyncResource resource, Element node, EObject object, EStructuralFeature feature) { |
| super(resource); |
| this.node = node; |
| this.modelObject = object; |
| this.feature = feature; |
| } |
| |
| public boolean isAdapterForType(Object type) { |
| return ValueUpdateAdapter.class.equals(type); |
| } |
| |
| public void notifyChanged(INodeNotifier notifier, int eventType, Object changedFeature, Object oldValue, |
| Object newValue, int pos) { |
| if(resource.isProcessEvents()) { |
| try { |
| resource.setProcessEvents(false); |
| if(newValue instanceof Text) { |
| changedFeature = newValue; |
| newValue = ((Text) newValue).getData(); |
| } |
| if(changedFeature instanceof Text) { |
| if(null == newValue) { |
| ExtendedEcoreUtil.eUnsetOrRemove(modelObject, feature, oldValue); |
| } else { |
| ExtendedEcoreUtil.eSetOrAdd(modelObject, feature, newValue.toString().trim()); |
| } |
| } |
| } finally { |
| resource.setProcessEvents(true); |
| } |
| |
| } |
| |
| } |
| |
| @Override |
| public void load() { |
| Object value = getElementText(node); |
| if(feature instanceof EAttribute) { |
| EAttribute ea = (EAttribute) feature; |
| value = EcoreUtil.createFromString(ea.getEAttributeType(), value.toString()); |
| } |
| |
| modelObject.eSet(feature, value); |
| } |
| |
| @Override |
| public void save() { |
| setElementTextValue(node, null, modelObject.eGet(feature)); |
| } |
| |
| @Override |
| public void update(Object oldValue, Object newValue, int index) { |
| setElementTextValue(node, oldValue, modelObject.eGet(feature)); |
| } |
| |
| /** |
| * Sets the text value of an existing node, attempting to preserve whitespace |
| * |
| * @param element |
| * @param oldValue |
| * @param newValue |
| */ |
| private void setElementTextValue(Element element, Object oldValue, Object newValue) { |
| newValue = newValue == null ? "" : newValue.toString(); //$NON-NLS-1$ |
| boolean replacedChild = false; |
| |
| if(oldValue != null) { |
| // First try to find a text node with the old value and set it (to |
| // preserve whitespace) |
| NodeList children = element.getChildNodes(); |
| int nChildren = children.getLength(); |
| for(int i = 0; i < nChildren; i++ ) { |
| Node child = children.item(i); |
| if(child instanceof Text) { |
| String value = ((Text) child).getData(); |
| int oldIdx = value.indexOf(oldValue.toString()); |
| if(oldIdx > -1) { |
| String replacement = value.substring(0, oldIdx) + newValue.toString() |
| + value.substring(oldIdx + oldValue.toString().length()); |
| ((Text) child).setData(replacement); |
| replacedChild = true; |
| } |
| } |
| } |
| } |
| |
| // If for some reason we couldn't find a text to update, just clear the |
| // element contents and put in our text. |
| if(!replacedChild) { |
| while(element.getFirstChild() != null) { |
| element.removeChild(element.getFirstChild()); |
| } |
| Text text = node.getOwnerDocument().createTextNode(newValue.toString()); |
| element.appendChild(text); |
| } |
| } |
| |
| public List<Node> getLinkedWhitespaceNodes() { |
| return linkedWhitespaceNodes; |
| } |
| |
| public void setLinkedWhitespaceNodes(List<Node> linkedWhitespaceNodes) { |
| this.linkedWhitespaceNodes = linkedWhitespaceNodes; |
| } |
| } |