/*
* Copyright 2003-2016 JetBrains s.r.o.
*
* Licensed 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 jetbrains.mps.ide.findusages.model.holders;
import jetbrains.mps.ide.findusages.CantLoadSomethingException;
import jetbrains.mps.ide.findusages.CantSaveSomethingException;
import jetbrains.mps.project.Project;
import org.jdom.Element;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.mps.openapi.model.SNode;
import org.jetbrains.mps.openapi.model.SNodeReference;
import org.jetbrains.mps.openapi.persistence.PersistenceFacade;
public class NodeHolder implements IHolder<SNodeReference> {
private static final String NODE = "node";
private static final String REF = "ref";
private static final String CAPTION = "title";
private SNodeReference myNodePointer;
private String myTitle; // can be null
public NodeHolder(Element element, Project project) throws CantLoadSomethingException {
read(element, project);
}
public NodeHolder(@NotNull SNode node) {
myNodePointer = node.getReference();
myTitle = node.getPresentation();
}
@Override
public SNodeReference getObject() {
return myNodePointer;
}
@Override
@NotNull
public String getCaption() {
return myTitle == null ? myNodePointer.toString() : myTitle;
}
@Override
public void read(Element element, Project project) throws CantLoadSomethingException {
Element nodeXML = element.getChild(NODE);
if (nodeXML == null || nodeXML.getAttribute(REF) == null) {
throw new CantLoadSomethingException("node is null");
}
myNodePointer = PersistenceFacade.getInstance().createNodeReference(nodeXML.getAttributeValue(REF));
myTitle = nodeXML.getAttributeValue(CAPTION);
}
@Override
public void write(Element element, Project project) throws CantSaveSomethingException {
Element nodeXML = new Element(NODE);
nodeXML.setAttribute(REF, PersistenceFacade.getInstance().asString(myNodePointer));
if (myTitle != null) {
nodeXML.setAttribute(CAPTION, myTitle);
}
element.addContent(nodeXML);
}
}