/*
* Copyright 2003-2015 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.nodeEditor.folding;
import jetbrains.mps.editor.runtime.cells.AbstractCellAction;
import jetbrains.mps.openapi.editor.EditorContext;
import jetbrains.mps.openapi.editor.cells.EditorCell;
import jetbrains.mps.openapi.editor.cells.EditorCell_Collection;
import org.jetbrains.annotations.Nullable;
import java.util.LinkedList;
import java.util.Queue;
/**
* User: shatalin
* Date: 05/10/15
*/
public abstract class AbstractCollapseCellAction extends AbstractCellAction {
protected boolean myDoCollapse;
public AbstractCollapseCellAction(boolean doCollapse) {
super(false);
myDoCollapse = doCollapse;
}
@Override
public boolean canExecute(EditorContext context) {
return getAnchorCell(context.getSelectedCell(), context) != null;
}
@Override
public void execute(EditorContext context) {
Queue<EditorCell_Collection> cellsToProcess = new LinkedList<EditorCell_Collection>();
cellsToProcess.offer(getAnchorCell(context.getSelectedCell(), context));
while (!cellsToProcess.isEmpty()) {
EditorCell_Collection nextCollection = cellsToProcess.poll();
if (myDoCollapse) {
offerChildCollections(cellsToProcess, nextCollection);
nextCollection.fold();
} else {
nextCollection.unfold();
offerChildCollections(cellsToProcess, nextCollection);
}
}
}
@Nullable
protected abstract EditorCell_Collection getAnchorCell(EditorCell selectedCell, EditorContext editorContext);
protected abstract void offerChildCollections(Queue<EditorCell_Collection> queue, EditorCell_Collection collectionCell);
}