| /* |
| * Copyright 2000-2014 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 com.intellij.ide.util.treeView.smartTree; |
| |
| import com.intellij.ide.util.treeView.AbstractTreeNode; |
| import org.jetbrains.annotations.NotNull; |
| |
| import java.util.Collection; |
| |
| /** |
| * Action for grouping items in a generic tree. |
| * |
| * @see com.intellij.ide.util.treeView.smartTree.TreeModel#getGroupers() |
| */ |
| |
| public interface Grouper extends TreeAction { |
| Grouper[] EMPTY_ARRAY = new Grouper[0]; |
| |
| /** |
| * Returns the collection of groups into which the children of the specified parent node |
| * are grouped. |
| * |
| * @param parent the parent node. |
| * @param children the children of the parent node. |
| * @return the collection of groups |
| */ |
| @NotNull |
| Collection<Group> group(@NotNull AbstractTreeNode parent, @NotNull Collection<TreeElement> children); |
| } |