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JSF components and utilities that can be used with any JSF implementation.
This library is compatible with both JSF1.1 and JSF1.2; however for JSF1.2 users there
is an alternative build of Tomahawk available that takes advantage of JSF1.2 features to
offer some additional benefits.
/*
* 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.custom.fileupload;
import javax.faces.application.FacesMessage;
import javax.faces.component.html.HtmlInputText;
import javax.faces.context.FacesContext;
import org.apache.myfaces.component.AlignProperty;
import org.apache.myfaces.component.UserRoleAware;
import org.apache.myfaces.component.UserRoleUtils;
import org.apache.myfaces.shared_tomahawk.util.MessageUtils;
import org.apache.myfaces.tomahawk.util.Constants;
/**
* Creates a file-selection widget in the rendered page which allows a user to select
* a file for uploading to the server.
*
* When the page is selected (using a command component such as commandButton), the
* currently selected file contents are included in the data posted to the server.
* The contents are cached somewhere, and an object of type UploadedFile will then
* be assigned to the property pointed to by the "value" expression of this component.
*
*
* You must enable the Tomahawk ExtensionsFilter to make this component work (see web.xml).
*
*
* Also, don't forget to set the form's attribute "enctype" to "multipart/form-data".
* See "examples/web/fileupload.jsp" for an example!
*
*
* Unless otherwise specified, all attributes accept static values or EL expressions.
*
*
* @JSFComponent
* name = "t:inputFileUpload"
* class = "org.apache.myfaces.custom.fileupload.HtmlInputFileUpload"
* tagClass = "org.apache.myfaces.custom.fileupload.HtmlInputFileUploadTag"
* @since 1.1.7
* @author Manfred Geiler (latest modification by $Author: lu4242 $)
* @version $Revision: 1146523 $ $Date: 2011-07-14 02:20:18 +0200 (Thu, 14 Jul 2011) $
*/
public abstract class AbstractHtmlInputFileUpload
extends HtmlInputText
implements UserRoleAware, AlignProperty
{
private static final String SIZE_LIMIT_EXCEEDED = "sizeLimitExceeded";
private static final String FILE_SIZE_LIMIT_EXCEEDED = "fileSizeLimitExceeded";
private static final String FILEUPLOAD_MAX_SIZE = "org.apache.myfaces.custom.fileupload.maxSize";
private static final String FILEUPLOAD_EXCEPTION = "org.apache.myfaces.custom.fileupload.exception";
public static final String COMPONENT_TYPE = "org.apache.myfaces.HtmlInputFileUpload";
public static final String DEFAULT_RENDERER_TYPE = "org.apache.myfaces.FileUpload";
public static final String SIZE_LIMIT_MESSAGE_ID = "org.apache.myfaces.FileUpload.SIZE_LIMIT";
public AbstractHtmlInputFileUpload()
{
setRendererType(DEFAULT_RENDERER_TYPE);
}
public void setUploadedFile(UploadedFile upFile)
{
setValue(upFile);
}
public UploadedFile getUploadedFile()
{
return (UploadedFile)getValue();
}
/**
* This setting was intended to allow control over how the contents of the
* file get temporarily stored during processing.
* It allows three options
*
* - "default": The file is handled on memory while the file size is below
* uploadThresholdSize value, otherwise is handled on disk or file storage when
* decode occur (set submitted value)
* - "memory": The file is loaded to memory when decode occur
* (set submitted value). In other words, before set the uploaded file as
* submitted value it is loaded to memory. Use with caution, because it
* could cause OutOfMemory exceptions when the uploaded files are too big.
* - "file": The file is handled on disk or file storage.
*
*
* @JSFProperty
*/
public abstract String getStorage();
/**
* This attribute specifies a comma-separated list of content types that
* a server processing this form will handle correctly. User agents may
* use this information to filter out non-conforming files when prompting
* a user to select files to be sent to the server
* (cf. the INPUT element when type="file")."
*
* @JSFProperty
*/
public abstract String getAccept();
/**
* An EL expression to which an UploadedFile object will be assigned on postback
* if the user specified a file to upload to the server.
*
* @JSFProperty
*/
public Object getValue()
{
return super.getValue();
}
public boolean isRendered()
{
if (!UserRoleUtils.isVisibleOnUserRole(this)) return false;
return super.isRendered();
}
protected void validateValue(FacesContext context, Object convertedValue)
{
super.validateValue(context, convertedValue);
if (isValid())
{
String exception =
(String) context.getExternalContext().getRequestMap().get(FILEUPLOAD_EXCEPTION);
if(exception != null )
{
if(exception.equals(SIZE_LIMIT_EXCEEDED))
{
Integer maxSize =
(Integer) context.getExternalContext().getRequestMap().get(FILEUPLOAD_MAX_SIZE);
MessageUtils.addMessage(Constants.TOMAHAWK_DEFAULT_BUNDLE, FacesMessage.SEVERITY_ERROR,
SIZE_LIMIT_MESSAGE_ID, new Object[] { getId(),
maxSize},
getClientId(context), context);
setValid(false);
}
else if (FILE_SIZE_LIMIT_EXCEEDED.equals(exception))
{
Integer maxSize =
(Integer) context.getExternalContext().getRequestMap().get(FILEUPLOAD_MAX_SIZE);
if (maxSize != null)
{
MessageUtils.addMessage(Constants.TOMAHAWK_DEFAULT_BUNDLE, FacesMessage.SEVERITY_ERROR,
SIZE_LIMIT_MESSAGE_ID, new Object[] { getId(),
maxSize},
getClientId(context), context);
}
else
{
maxSize = (Integer) context.getExternalContext().getRequestMap().get(
"org.apache.myfaces.custom.fileupload."+this.getClientId(context)+".maxSize");
if (maxSize != null)
{
MessageUtils.addMessage(Constants.TOMAHAWK_DEFAULT_BUNDLE, FacesMessage.SEVERITY_ERROR,
SIZE_LIMIT_MESSAGE_ID, new Object[] { getId(),
maxSize},
getClientId(context), context);
}
//else
//{
//Ignore because this exception belongs to other component
//}
}
setValid(false);
}
else
{
throw new IllegalStateException("other exceptions not handled yet, exception : "+exception);
}
}
}
}
}