InstanceAttr.cs :  » Game » RealmForge » ColladaNET » Import » Attributes » C# / CSharp Open Source

using System;
using System.Xml;
using System.Collections;
using CDColladaNET.Import;

// Copyright (c) 2005 Accelerated Pictures, 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.
//

namespace ColladaNET.Import.Attributes{
  public class InstanceAttr : AttrBase
  {
    #region Accessors
    private string mPath;
    private bool mInitialized = false;
    private CD.Instance mInstance;
    public bool Exists
    {
      get
      {
        Initialize();
        return ( mInstance != null );
      }
    }
    public CD.Instance Value
    {
      get
      {
        Initialize();
        return mInstance;
      }
    }
    private void Initialize()
    {
      if ( mInitialized == false )
      {
        XmlNode node = XmlSource.SelectSingleNode( mPath , Collada.NS );
        if ( node == null )
        {
          mInstance = null;
        }
        else
        {
          mInstance = new CD.Instance( node );
        }
        mInitialized = true;
      }
    }
    #endregion

    #region Constructors
    public InstanceAttr( XmlNode source , string xpath ) : base( source )
    {
      mPath = xpath;
    }
    #endregion
  }
}