tapestry/tapestry-examples/Workbench/src/java/org/apache/tapestry/workbench/tree/examples/fsmodel/FileObject.java

// Copyright 2004, 2005 The Apache Software Foundation
//
// 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.apache.tapestry.workbench.tree.examples.fsmodel;

import java.io.File;
import java.util.ArrayList;
import java.util.Collection;

import org.apache.tapestry.contrib.tree.model.ITreeNode;
import org.apache.tapestry.engine.IEngineService;

/**
 * 
 * @author unknown
 */
public class FileObject extends SFObject
{
    /**
     * 
     */
    private static final long serialVersionUID = -4552981105079058185L;

    private long m_lSize;

    private final IEngineService _assetService;

    public FileObject(ITreeNode objParent, File objFile, IEngineService assetService)
    {
        super(objParent, objFile);
        _assetService = assetService;
        init();
    }

    protected void init()
    {
        super.init();
        m_lSize = m_objFile.length();
    }

    public long getSize()
    {
        return m_lSize;
    }

    /**
     * @see org.apache.tapestry.contrib.tree.model.ITreeNode#containsChild(ITreeNode)
     */
    public boolean containsChild(ITreeNode node)
    {
        return false;
    }

    /**
     * @see org.apache.tapestry.contrib.tree.model.ITreeNode#getAllowsChildren()
     */
    public boolean getAllowsChildren()
    {
        return false;
    }

    /**
     * @see org.apache.tapestry.contrib.tree.model.ITreeNode#getChildCount()
     */
    public int getChildCount()
    {
        return 0;
    }

    /**
     * @see org.apache.tapestry.contrib.tree.model.ITreeNode#getChildren()
     */
    public Collection getChildren()
    {
        return new ArrayList();
    }

    /**
     * @see org.apache.tapestry.contrib.tree.model.ITreeNode#isLeaf()
     */
    public boolean isLeaf()
    {
        return true;
    }

    /**
     * @see org.apache.tapestry.workbench.tree.examples.fsmodel.IFileSystemTreeNode#getAssets()
     */
    public AssetsHolder getAssets()
    {
        if (m_objAssetsHolder == null)
        {
            final String a = "/org/apache/tapestry/workbench/tree/examples/fsmodel/file.gif";
            m_objAssetsHolder = new AssetsHolder(_assetService, a, a);
        }
        return m_objAssetsHolder;
    }
}