platform/vcs-api/src/com/intellij/openapi/vcs/changes/actions/DiffExtendUIFactory.java

/*
 * Copyright 2000-2012 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.openapi.vcs.changes.actions;

import com.intellij.openapi.actionSystem.AnAction;
import com.intellij.openapi.vcs.changes.Change;
import org.jetbrains.annotations.Nullable;

import javax.swing.*;
import java.util.Collections;
import java.util.List;

public interface DiffExtendUIFactory {
  DiffExtendUIFactory NONE = new DiffExtendUIFactory() {
    public List<? extends AnAction> createActions(Change change) {
      return Collections.emptyList();
    }

    @Nullable
    public JComponent createBottomComponent() {
      return null;
    }
  };
  List<? extends AnAction> createActions(Change change);

  @Nullable
  JComponent createBottomComponent();
}