/*
* 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.ui.smodel;
import jetbrains.mps.ide.projectPane.logicalview.PresentationUpdater;
import jetbrains.mps.ide.projectPane.logicalview.SNodeTreeUpdater;
import jetbrains.mps.ide.projectPane.logicalview.SimpleModelListener;
import jetbrains.mps.ide.ui.smodel.SModelEventsDispatcher.SModelEventsListener;
import jetbrains.mps.ide.ui.tree.smodel.SNodeTreeNode;
import jetbrains.mps.project.Project;
import jetbrains.mps.smodel.SModelInternal;
import jetbrains.mps.smodel.event.SModelEvent;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.mps.openapi.model.EditableSModel;
import org.jetbrains.mps.openapi.model.SModel;
import org.jetbrains.mps.openapi.model.SNode;
import org.jetbrains.mps.openapi.model.SNodeUtil;
import javax.swing.tree.DefaultTreeModel;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
// FIXME seems like favorites view is the only client for this tree node, shall reuse some other tree node instead?
public class UpdatableSNodeTreeNode extends SNodeTreeNode {
private final Project myProject;
private SNodeTreeUpdater myTreeUpdater;
private SModelEventsListener myEventsListener;
private SimpleModelListener mySNodeModelListener;
public UpdatableSNodeTreeNode(Project mpsProject, SNode node) {
super(node);
myProject = mpsProject;
}
private void addListeners() {
if (myEventsListener == null) return;
SModelEventsDispatcher.getInstance().registerListener(myEventsListener);
((SModelInternal) myEventsListener.getModelDescriptor()).addModelListener(mySNodeModelListener);
}
private void removeListeners() {
SModel md = getModelDescriptor();
if (md == null) return;
if (mySNodeModelListener != null) {
((SModelInternal) getModelDescriptor()).removeModelListener(mySNodeModelListener);
}
if (myEventsListener == null) return;
SModelEventsDispatcher.getInstance().unregisterListener(myEventsListener);
myEventsListener = null;
myTreeUpdater = null;
}
private SModel getModelDescriptor() {
SNode node = getSNode();
return (node == null) ? null : node.getModel();
}
@Override
protected void onRemove() {
super.onRemove();
removeListeners();
}
@Override
protected void onAdd() {
super.onAdd();
if (myEventsListener != null) return;
myEventsListener = new MyEventsListener(getModelDescriptor());
final PresentationUpdater<SNodeTreeNode> updater = new PresentationUpdater<SNodeTreeNode>(this) {
@Override
protected boolean isValid(SNodeTreeNode treeNode) {
return super.isValid(treeNode) && SNodeUtil.isAccessible(treeNode.getSNode(), myProject.getRepository());
}
};
mySNodeModelListener = new SimpleModelListener(updater);
if (getModelDescriptor() instanceof EditableSModel) {
myTreeUpdater = new MySNodeTreeUpdater(myProject, this);
}
addListeners();
}
private class MyEventsListener implements SModelEventsListener {
private SModel myModelDescriptor;
private MyEventsListener(SModel modelDescriptor) {
myModelDescriptor = modelDescriptor;
}
@NotNull
@Override
public SModel getModelDescriptor() {
return myModelDescriptor;
}
@Override
public void eventsHappened(List<SModelEvent> events) {
if (myTreeUpdater == null) return;
myTreeUpdater.eventsHappenedInCommand(events);
}
}
private class MySNodeTreeUpdater extends SNodeTreeUpdater<UpdatableSNodeTreeNode> {
public MySNodeTreeUpdater(Project project, UpdatableSNodeTreeNode treeNode) {
super(project, treeNode);
}
private Set<SNode> getNodesInThisRoot(Set<SNode> candidates) {
Set<SNode> nodesInThisRoot = new HashSet<SNode>();
for (SNode node : candidates) {
SNode root = (node.getModel() != null && node.getParent() == null) ? node : node.getContainingRoot();
if (myTreeNode.getSNode().equals(root)) {
nodesInThisRoot.add(node);
}
}
return nodesInThisRoot;
}
@Override
public SModel getSModelDescriptor() {
return myTreeNode.getSNode().getModel();
}
@Override
public void updateNodesWithChangedPackages(Set<SNode> nodesWithChangedPackages) {
// empty
}
@Override
public void addAndRemoveRoots(Set<SNode> removedRoots, Set<SNode> addedRoots) {
if (getTree() == null) return;
DefaultTreeModel treeModel = (DefaultTreeModel) getTree().getModel();
for (SNode removedRoot : removedRoots) {
if (removedRoot.equals(myTreeNode.getSNode())) {
treeModel.removeNodeFromParent(myTreeNode);
}
}
}
@Override
public void updateChangedPresentations(Set<SNode> nodesWithChangedPresentations) {
Set<SNode> nodeInThisRoot = getNodesInThisRoot(nodesWithChangedPresentations);
super.updateChangedPresentations(nodeInThisRoot);
}
@Override
public void updateChangedRefs(Set<SNode> nodesWithChangedRefs) {
Set<SNode> nodeInThisRoot = getNodesInThisRoot(nodesWithChangedRefs);
super.updateChangedRefs(nodeInThisRoot);
}
}
}