/*
* Copyright 2003-2014 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.projectPane.logicalview;
import com.intellij.util.ui.update.MergingUpdateQueue;
import com.intellij.util.ui.update.Update;
import jetbrains.mps.ide.ui.tree.MPSTreeNode;
import jetbrains.mps.smodel.ModelAccess;
/**
* Update presentation of MPSTreeNode (with {@link jetbrains.mps.ide.ui.tree.MPSTreeNode#updatePresentation(boolean, boolean)})
* with read command from EDT. Uses {@link com.intellij.util.ui.update.MergingUpdateQueue} to avoid queuing too many updates.
* Override {@link #isValid(jetbrains.mps.ide.ui.tree.MPSTreeNode)} to control update dispatch
* @author Artem Tikhomirov
*/
public class PresentationUpdater<T extends MPSTreeNode> implements Runnable {
private static MergingUpdateQueue ourUpdateQueue = new MergingUpdateQueue("PresentationUpdater", 300, true, null);
private final T myTreeNode;
private boolean reloadSubTree, updateAncestors;
public PresentationUpdater(T node) {
myTreeNode = node;
}
public void update(boolean reloadSubTree, boolean updateAncestors) {
this.reloadSubTree = reloadSubTree;
this.updateAncestors = updateAncestors;
ourUpdateQueue.queue(new Update(new Object[]{PresentationUpdater.class, myTreeNode}) {
@Override
public void run() {
ModelAccess.instance().runReadInEDT(PresentationUpdater.this);
}
});
}
public void run() {
if (isValid(myTreeNode)) {
myTreeNode.updatePresentation(reloadSubTree, updateAncestors);
}
}
protected boolean isValid(T treeNode) {
return treeNode.getTree() != null;
}
}