Package org.apache.directory.studio.schemaeditor.view.views

Source Code of org.apache.directory.studio.schemaeditor.view.views.ProblemsViewContentProvider

/*
*  Licensed to the Apache Software Foundation (ASF) under one
*  or more contributor license agreements.  See the NOTICE file
*  distributed with this work for additional information
*  regarding copyright ownership.  The ASF licenses this file
*  to you 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.apache.directory.studio.schemaeditor.view.views;

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

import org.apache.directory.studio.schemaeditor.Activator;
import org.apache.directory.studio.schemaeditor.model.schemachecker.SchemaChecker;
import org.apache.directory.studio.schemaeditor.model.schemachecker.SchemaError;
import org.apache.directory.studio.schemaeditor.model.schemachecker.SchemaWarning;
import org.apache.directory.studio.schemaeditor.view.wrappers.Folder.FolderType;
import org.apache.directory.studio.schemaeditor.view.wrappers.Folder;
import org.apache.directory.studio.schemaeditor.view.wrappers.ProblemsViewRoot;
import org.apache.directory.studio.schemaeditor.view.wrappers.SchemaErrorWrapper;
import org.apache.directory.studio.schemaeditor.view.wrappers.SchemaWarningWrapper;
import org.apache.directory.studio.schemaeditor.view.wrappers.TreeNode;
import org.eclipse.jface.viewers.IStructuredContentProvider;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.Viewer;

/**
* This class implements the ContentProvider for the ProblemsView.
*
* @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
* @version $Rev$, $Date$
*/
public class ProblemsViewContentProvider implements IStructuredContentProvider,
    ITreeContentProvider {
  /*
   * (non-Javadoc)
   *
   * @see org.eclipse.jface.viewers.IStructuredContentProvider#getElements(java.lang.Object)
   */
  public Object[] getElements(Object inputElement) {
    return getChildren(inputElement);
  }

  /*
   * (non-Javadoc)
   *
   * @see org.eclipse.jface.viewers.IContentProvider#dispose()
   */
  public void dispose() {
    // Nothing to do.
  }

  /*
   * (non-Javadoc)
   *
   * @see org.eclipse.jface.viewers.IContentProvider#inputChanged(org.eclipse.jface.viewers.Viewer,
   *      java.lang.Object, java.lang.Object)
   */
  public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
    // Nothing to do.
  }

  /*
   * (non-Javadoc)
   *
   * @see org.eclipse.jface.viewers.ITreeContentProvider#getChildren(java.lang.Object)
   */
  public Object[] getChildren(Object parentElement) {
    List<TreeNode> children = null;

    if (parentElement instanceof ProblemsViewRoot) {
      ProblemsViewRoot root = (ProblemsViewRoot) parentElement;

      if (root.getChildren().isEmpty()) {
        SchemaChecker schemaChecker = Activator.getDefault()
            .getSchemaChecker();

        if (schemaChecker != null) {
          List<SchemaError> errors = schemaChecker.getErrors();
          if (!errors.isEmpty()) {
            Folder errorsFolder = new Folder(FolderType.ERROR, root);
            root.addChild(errorsFolder);
            for (SchemaError error : errors) {
              errorsFolder.addChild(new SchemaErrorWrapper(error,
                  errorsFolder));
            }
          }

          List<SchemaWarning> warnings = schemaChecker.getWarnings();
          if (!warnings.isEmpty()) {
            Folder warningsFolder = new Folder(FolderType.WARNING,
                root);
            root.addChild(warningsFolder);
            for (SchemaWarning warning : warnings) {
              warningsFolder.addChild(new SchemaWarningWrapper(
                  warning, warningsFolder));
            }
          }
        }
      }

      children = root.getChildren();
    } else if (parentElement instanceof Folder) {
      Folder folder = (Folder) parentElement;

      children = folder.getChildren();
    } else if (parentElement instanceof SchemaErrorWrapper) {
      children = new ArrayList<TreeNode>();
    } else if (parentElement instanceof SchemaWarningWrapper) {
      children = new ArrayList<TreeNode>();
    }

    return children.toArray();
  }

  /*
   * (non-Javadoc)
   *
   * @see org.eclipse.jface.viewers.ITreeContentProvider#getParent(java.lang.Object)
   */
  public Object getParent(Object element) {
    if (element instanceof TreeNode) {
      return ((TreeNode) element).getParent();
    }

    // Default
    return null;
  }

  /*
   * (non-Javadoc)
   *
   * @see org.eclipse.jface.viewers.ITreeContentProvider#hasChildren(java.lang.Object)
   */
  public boolean hasChildren(Object element) {
    if (element instanceof TreeNode) {
      return ((TreeNode) element).hasChildren();
    }

    // Default
    return false;
  }
}
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