/*
* 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.myfaces.trinidadinternal.image.laf.browser;
import java.awt.Image;
import java.io.IOException;
import java.io.InputStream;
import java.util.Map;
import org.apache.myfaces.trinidad.logging.TrinidadLogger;
import org.apache.myfaces.trinidad.share.io.InputStreamProvider;
import org.apache.myfaces.trinidadinternal.image.ImageConstants;
import org.apache.myfaces.trinidadinternal.image.ImageContext;
import org.apache.myfaces.trinidadinternal.image.painter.ImageUtils;
/**
* Private utility methods for loading source icons.
*
* @version $Name: $ ($Revision: adfrt/faces/adf-faces-impl/src/main/java/oracle/adfinternal/view/faces/image/laf/browser/SourceUtils.java#0 $) $Date: 10-nov-2005.19:05:11 $
*/
class SourceUtils
{
public static Image getSourceIcon(
ImageContext context,
Map<Object, Object> properties
)
{
return getSourceIcon(context,
properties,
ImageConstants.SOURCE_INPUT_STREAM_PROVIDER_KEY);
}
/**
* Returns the source Image for the specified requested properties
*/
public static Image getSourceIcon(
ImageContext context,
Map<Object, Object> properties,
Object key
)
{
InputStreamProvider provider = (InputStreamProvider)
properties.get(key);
// If we can't get a provider, we can't get an Image
if (provider == null)
{
_log(properties,
_PROVIDER_ERROR + " (" + _getKeyName(key) + ")",
null);
return null;
}
InputStream in = null;
try
{
in = provider.openInputStream();
}
catch (IOException e)
{
_log(properties, _INPUT_STREAM_ERROR, e);
return null;
}
if (in == null)
{
_log(properties, _INPUT_STREAM_ERROR, null);
return null;
}
// Note: getImageFromStream() closes up our InputStream,
// so we do not explicitly call InputStream.close() here.
Image source = ImageUtils.getImageFromStream(in);
if (source == null)
{
_log(properties, _IMAGE_ERROR, null);
}
return source;
}
// Logs a warning
private static void _log(
Map<Object, Object> properties,
String message,
Throwable t
)
{
if (_LOG.isWarning())
{
String source = (String) properties.get(ImageConstants.SOURCE_KEY);
if (source != null)
message += ("for source icon " + source);
_LOG.warning(message, t);
}
}
private static String _getKeyName(Object key)
{
return key.toString();
}
// Error messages
private static final String _PROVIDER_ERROR =
"Could not get InputStreamProvider";
private static final String _INPUT_STREAM_ERROR =
"Could not get InputStream";
private static final String _IMAGE_ERROR =
"Could not create image";
private static final TrinidadLogger _LOG = TrinidadLogger.createTrinidadLogger(SourceUtils.class);
}