android/src/org/jetbrains/android/dom/xml/XmlResourceDomFileDescription.java

/*
 * Copyright 2000-2010 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 org.jetbrains.android.dom.xml;

import com.android.resources.ResourceType;
import com.intellij.openapi.application.ApplicationManager;
import com.intellij.openapi.module.Module;
import com.intellij.openapi.util.Computable;
import com.intellij.psi.xml.XmlAttribute;
import com.intellij.psi.xml.XmlFile;
import com.intellij.psi.xml.XmlTag;
import org.jetbrains.android.dom.AndroidResourceDomFileDescription;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

/**
 * Created by IntelliJ IDEA.
 * User: Eugene.Kudelevsky
 * Date: Jun 11, 2009
 * Time: 7:35:15 PM
 * To change this template use File | Settings | File Templates.
 */
public class XmlResourceDomFileDescription extends AndroidResourceDomFileDescription<XmlResourceElement> {
  public XmlResourceDomFileDescription() {
    super(XmlResourceElement.class, "PreferenceScreen", ResourceType.XML.getName());
  }

  @Override
  public boolean acceptsOtherRootTagNames() {
    return true;
  }

  public static boolean isXmlResourceFile(@NotNull final XmlFile file) {
    return ApplicationManager.getApplication().runReadAction(new Computable<Boolean>() {
      @Override
      public Boolean compute() {
        return new XmlResourceDomFileDescription().isMyFile(file, null);
      }
    });
  }

  @Override
  public boolean isMyFile(@NotNull XmlFile file, @Nullable Module module) {
    if (!super.isMyFile(file, module)) {
      return false;
    }
    final XmlTag rootTag = file.getRootTag();

    if (rootTag == null || rootTag.getNamespace().length() > 0) {
      return false;
    }
    for (XmlAttribute attribute : rootTag.getAttributes()) {
      if (attribute.getName().equals("xmlns")) {
        return false;
      }
    }
    return true;
  }
}