// Copyright 2011-2016 Google LLC
//
// 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.google.security.zynamics.binnavi.Gui.MainWindow.ProjectTree.Nodes;

import java.awt.Component;

/**
 * Abstract base class for lazy component loading.
 */
public abstract class CAbstractLazyComponent implements ILazyComponent {
  /**
   * The lazily created component.
   */
  private CAbstractNodeComponent m_component = null;

  /**
   * Concretely creates the component.
   * 
   * @return The created component.
   */
  protected abstract CAbstractNodeComponent createComponent();

  @Override
  public void dispose() {
    if (m_component != null) {
      m_component.dispose();
    }
  }

  @Override
  public final Component getComponent() {
    if (m_component == null) {
      m_component = createComponent();
    }

    return m_component;
  }
}
