/*
 * Copyright 2003-2011 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.lang.editor.generator.internal;

import jetbrains.mps.editor.runtime.impl.CellUtil;
import jetbrains.mps.lang.editor.cellProviders.AggregationCellContext;
import jetbrains.mps.lang.editor.menus.substitute.DefaultSubstituteMenuLookup;
import jetbrains.mps.lang.editor.menus.transformation.SubstituteActionsCollector;
import jetbrains.mps.lang.editor.menus.transformation.SubstituteItemsCollector;
import jetbrains.mps.nodeEditor.cellMenu.BasicCellContext;
import jetbrains.mps.nodeEditor.cellMenu.CellContext;
import jetbrains.mps.nodeEditor.cellMenu.OldNewSubstituteUtil;
import jetbrains.mps.nodeEditor.cellMenu.SubstituteInfoPartExt;
import jetbrains.mps.openapi.editor.EditorContext;
import jetbrains.mps.openapi.editor.cells.SubstituteAction;
import jetbrains.mps.openapi.editor.menus.substitute.SubstituteMenuLookup;
import jetbrains.mps.openapi.editor.menus.transformation.TransformationMenuItem;
import jetbrains.mps.smodel.IOperationContext;
import jetbrains.mps.smodel.action.DefaultChildNodeSetter;
import jetbrains.mps.smodel.action.IChildNodeSetter;
import jetbrains.mps.smodel.action.ModelActions;
import jetbrains.mps.smodel.adapter.MetaAdapterByDeclaration;
import jetbrains.mps.smodel.language.LanguageRegistry;
import org.jetbrains.mps.openapi.language.SAbstractConcept;
import org.jetbrains.mps.openapi.language.SContainmentLink;
import org.jetbrains.mps.openapi.model.SNode;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

/**
 * Igor Alshannikov
 * Date: Nov 29, 2006
 */
public abstract class AbstractCellMenuPart_ReplaceChild_CustomChildConcept implements SubstituteInfoPartExt {
  @Override
  public List<SubstituteAction> createActions(CellContext cellContext, EditorContext editorContext) {
    SNode parentNode = (SNode) cellContext.get(BasicCellContext.EDITED_NODE);
    SNode linkDeclaration = (SNode) cellContext.get(AggregationCellContext.LINK_DECLARATION);
    SNode defaultConceptOfChild = CellUtil.getLinkDeclarationTarget(linkDeclaration);
    SNode currentChild = (SNode) cellContext.getOpt(AggregationCellContext.CURRENT_CHILD_NODE);


    IOperationContext context = editorContext.getOperationContext();
    SNode childNodeConcept = getConceptOfChild(parentNode, currentChild, defaultConceptOfChild, context, editorContext);
    if (childNodeConcept == null) {
      return Collections.emptyList();
    }

    SAbstractConcept concept = MetaAdapterByDeclaration.getConcept(childNodeConcept);
    if (concept == null) {
      return new ArrayList<>();
    }

    SContainmentLink containmentLink = MetaAdapterByDeclaration.getContainmentLink(linkDeclaration);
    SubstituteMenuLookup lookup = new DefaultSubstituteMenuLookup(LanguageRegistry.getInstance(editorContext.getRepository()),
                                                                  concept);
    List<TransformationMenuItem> transformationItems = new SubstituteItemsCollector(parentNode, currentChild, containmentLink, editorContext, lookup).collect();
    return new SubstituteActionsCollector(parentNode, transformationItems, editorContext.getRepository()).collect();
  }

  protected abstract SNode getConceptOfChild(SNode node, SNode currentChild, SNode defaultConceptOfChild, IOperationContext context,
      EditorContext editorContext);
}
