dom/openapi/src/com/intellij/util/xml/model/SimpleDomModelFactory.java

   1 /*
   2  * Copyright 2000-2007 JetBrains s.r.o.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 package com.intellij.util.xml.model;
  18
  19 import org.jetbrains.annotations.Nullable;
  20 import org.jetbrains.annotations.NotNull;
  21 import com.intellij.psi.xml.XmlFile;
  22 import com.intellij.util.xml.DomFileElement;
  23 import com.intellij.util.xml.DomManager;
  24 import com.intellij.util.xml.ModelMerger;
  25 import com.intellij.util.xml.DomElement;
  26 import com.intellij.util.containers.ContainerUtil;
  27
  28 import java.util.Set;
  29 import java.util.List;
  30 import java.util.ArrayList;
  31
  32 /**
  33  * @author Dmitry Avdeev
  34  */
  35 public class SimpleDomModelFactory<T extends DomElement> {
  36   protected final Class<T> myClass;
  37   protected final ModelMerger myModelMerger;
  38
  39   public SimpleDomModelFactory(@NotNull Class<T> aClass, @NotNull ModelMerger modelMerger) {
  40     myClass = aClass;
  41     myModelMerger = modelMerger;
  42   }
  43
  44   @Nullable
  45   public T getDom(@NotNull XmlFile configFile) {
  46     final DomFileElement<T> element = getDomRoot(configFile);
  47     return element == null ? null : element.getRootElement();
  48   }
  49
  50   @Nullable
  51   public DomFileElement<T> getDomRoot(@NotNull XmlFile configFile) {
  52     return DomManager.getDomManager(configFile.getProject()).getFileElement(configFile, myClass);
  53   }
  54
  55   @Deprecated
  56   @NotNull
  57   public T createMergedModel(Set<XmlFile> configFiles) {
  58     return createMergedModelRoot(configFiles).getRootElement();
  59   }
  60
  61   @NotNull
  62   public DomFileElement<T> createMergedModelRoot(Set<XmlFile> configFiles) {
  63     List<DomFileElement<T>> configs = new ArrayList<DomFileElement<T>>(configFiles.size());
  64     for (XmlFile configFile : configFiles) {
  65       ContainerUtil.addIfNotNull(getDomRoot(configFile), configs);
  66     }
  67     return myModelMerger.mergeModels(DomFileElement.class, configs);
  68   }
  69 }