plugins/properties/properties-psi-impl/src/com/intellij/lang/properties/editor/PropertiesFoldingBuilder.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.lang.properties.editor;

import com.intellij.lang.ASTNode;
import com.intellij.lang.folding.CustomFoldingBuilder;
import com.intellij.lang.folding.FoldingDescriptor;
import com.intellij.lang.properties.parsing.PropertiesElementTypes;
import com.intellij.openapi.editor.Document;
import com.intellij.openapi.util.TextRange;
import com.intellij.psi.PsiElement;
import org.jetbrains.annotations.NotNull;

import java.util.List;

/**
 * @author Rustam Vishnyakov
 */
public class PropertiesFoldingBuilder extends CustomFoldingBuilder {
  @Override
  protected void buildLanguageFoldRegions(@NotNull List<FoldingDescriptor> descriptors,
                                          @NotNull PsiElement root,
                                          @NotNull Document document,
                                          boolean quick) {
  }

  @Override
  protected String getLanguagePlaceholderText(@NotNull ASTNode node, @NotNull TextRange range) {
    return "";
  }

  @Override
  protected boolean isRegionCollapsedByDefault(@NotNull ASTNode node) {
    return false;
  }

  @Override
  protected boolean isCustomFoldingRoot(ASTNode node) {
    return node.getElementType() == PropertiesElementTypes.FILE;
  }
}