/*
* Copyright 2003-2011 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.smodel.action;
import jetbrains.mps.actions.runtime.impl.ActionsUtil;
import jetbrains.mps.nodeEditor.EditorManager;
import jetbrains.mps.nodeEditor.cellMenu.AbstractNodeSubstituteInfo;
import jetbrains.mps.openapi.editor.EditorContext;
import jetbrains.mps.typesystem.inference.TypeChecker;
import org.apache.log4j.LogManager;
import org.apache.log4j.Logger;
import org.jetbrains.annotations.Nullable;
import org.jetbrains.mps.openapi.model.SModel;
import org.jetbrains.mps.openapi.model.SNode;
/**
* Igor Alshannikov
* Mar 29, 2005
*
*
*/
public class DefaultChildNodeSubstituteAction extends AbstractNodeSubstituteAction {
private static final Logger LOG = LogManager.getLogger(DefaultChildNodeSubstituteAction.class);
private SNode myCurrentChild;
private SNode myOldChild;
private IChildNodeSetter mySetter;
/**
* To be used from generated code. There is no output concept specified here. Subclasses should implement createChildNode() method.
*/
protected DefaultChildNodeSubstituteAction(Object parameterObject, SNode parentNode, SNode currentChild, IChildNodeSetter setter) {
super(null, parameterObject, parentNode);
myCurrentChild = currentChild;
setupOldChild();
mySetter = setter;
}
/**
* @param concept instanceof AbstractConceptDeclaration
*/
public DefaultChildNodeSubstituteAction(SNode concept, SNode parentNode, SNode currentChild, IChildNodeSetter setter) {
super(concept, concept, parentNode);
myCurrentChild = currentChild;
setupOldChild();
mySetter = setter;
}
public DefaultChildNodeSubstituteAction(SNode outputConcept, Object parameterObject, SNode parentNode, SNode currentChild, IChildNodeSetter setter) {
super(outputConcept, parameterObject, parentNode);
myCurrentChild = currentChild;
myOldChild = myCurrentChild;
mySetter = setter;
}
private void setupOldChild() {
if (myCurrentChild != null && myCurrentChild.getUserObject(EditorManager.OLD_NODE_FOR_SUBSTITUTION) != null) {
myOldChild = (SNode) myCurrentChild.getUserObject(EditorManager.OLD_NODE_FOR_SUBSTITUTION);
} else {
myOldChild = myCurrentChild;
}
}
@Override
public final SNode doSubstitute(@Nullable final EditorContext editorContext, String pattern) {
SNode parentNode = getSourceNode();
SNode newChild = createChildNode(getParameterObject(), parentNode.getModel(), pattern);
if (newChild != null) {
SNode result = mySetter.execute(parentNode, myCurrentChild, newChild, editorContext);
if (result != newChild) {
// node was wrapped by mySetter
return result;
}
return selectChildNode(result, parentNode.getModel(), pattern, editorContext);
}
return null;
}
protected SNode selectChildNode(SNode createdNode, SModel model, String pattern, EditorContext editorContext) {
return createdNode;
}
public SNode createChildNode(Object parameterObject, SModel model, String pattern) {
SNode conceptDeclaration = getOutputConcept();
if (conceptDeclaration == null) {
throw new RuntimeException("Couldn't create child node. Concept declaration was not specified. Parameter object: " + getParameterObject());
}
return NodeFactoryManager.createNode(conceptDeclaration, myOldChild, getSourceNode(), model);
}
@Override
public SNode getActionType(String pattern) {
SNode node = createChildNode(getParameterObject(), AbstractNodeSubstituteInfo.getModelForTypechecking(), pattern);
if (node == null) return null;
if (node.getParent() != null) {
LOG.warn("Node, created by " + this.getClass() + " action already has parent node.", new Throwable());
}
if (ActionsUtil.isInstanceOfIType(node)) return node;
//the following is for smart-type completion
AbstractNodeSubstituteInfo.getModelForTypechecking().addRootNode(node);
try {
return TypeChecker.getInstance().getTypeOf(node);
} finally {
AbstractNodeSubstituteInfo.getModelForTypechecking().removeRootNode(node);
}
}
}