/*
* 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.newTypesystem.operation;
import jetbrains.mps.newTypesystem.state.State;
import org.jetbrains.mps.openapi.model.SNode;
import jetbrains.mps.typesystem.inference.EquationInfo;
import jetbrains.mps.util.Pair;
import java.util.Collections;
import java.util.LinkedList;
import java.util.List;
public abstract class AbstractOperation {
private List<AbstractOperation> myConsequences;
protected SNode mySource = null;
protected Pair<String, String> myRule = null;
public void addConsequence(AbstractOperation op) {
if (myConsequences == null) {
myConsequences = new LinkedList<AbstractOperation>();
}
myConsequences.add(op);
}
protected void setRule(EquationInfo info) {
if (info != null) {
myRule = new Pair<String, String>(info.getRuleModel(), info.getRuleId());
}
}
protected void setRule(String model, String id) {
myRule = new Pair<String, String>(model, id);
}
public List<AbstractOperation> getConsequences() {
return myConsequences == null ? Collections.<AbstractOperation>emptyList() : Collections.unmodifiableList(myConsequences);
}
protected abstract void doUndo(State state);
protected abstract void doRedo(State state);
public void undo(final State state) {
state.executeStateChangeAction(new Runnable() {
@Override
public void run() {
doUndo(state);
}
});
}
public void redo(final State state) {
state.executeStateChangeAction(new Runnable() {
@Override
public void run() {
doRedo(state);
}
});
}
// default implementation
public void execute(State state) {
redo(state);
}
public abstract String getPresentation();
public String getShortPresentation() {
return "";
}
public String getPresentationKind() {
return PresentationKind.DEFAULT;
}
public SNode getSource() {
return mySource;
}
public Pair<String, String> getRule() {
return myRule;
}
public List<SNode> getVariables() {
return null;
}
public boolean hasEffect() {
return true;
}
}