/*
* Copyright (C) 2003-2011 eXo Platform SAS.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 3
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see<http://www.gnu.org/licenses/>.
*/
package org.exoplatform.webui.form.input;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.LinkedList;
import java.util.List;
import org.exoplatform.upload.UploadResource;
import org.exoplatform.upload.UploadService;
import org.exoplatform.upload.UploadService.UploadUnit;
import org.exoplatform.webui.application.WebuiRequestContext;
import org.exoplatform.webui.config.annotation.ComponentConfig;
import org.exoplatform.webui.config.annotation.EventConfig;
import org.exoplatform.webui.core.UIComponent;
import org.exoplatform.webui.event.Event;
import org.exoplatform.webui.event.EventListener;
import org.exoplatform.webui.form.UIFormInputBase;
/**
* @author <a href="mailto:haint@exoplatform.com">Nguyen Thanh Hai</a>
*
* @datJul 19, 2011
*
* This is instead of UIFormUploadInput.
*/
@ComponentConfig(template = "system:/groovy/webui/form/UIUploadInput.gtmpl", events = {
@EventConfig(listeners = UIUploadInput.CreateUploadIdActionListener.class),
@EventConfig(listeners = UIUploadInput.RemoveUploadIdActionListener.class)})
public class UIUploadInput extends UIFormInputBase<String>
{
private LinkedList<String> uploadIds = new LinkedList<String>();
private boolean dynamic = false;
private Integer limitSize;
private UploadUnit limitUnit;
public UIUploadInput(String name, String bindingExpression)
{
this(name, bindingExpression, 1);
}
/**
* @param limitFile the amount of field(s) input upload. If limitFile less than one , the dynamic mode will enable
*/
public UIUploadInput(String name, String bindingExpression, int limitFile)
{
super(name, bindingExpression, String.class);
if (limitFile < 1)
{
dynamic = true;
limitFile = 1;
}
for(int i = 0; i < limitFile; i++)
{
uploadIds.add( new StringBuffer().append(Math.abs(this.hashCode())).append('-').append(i).toString());
}
UploadService service = getApplicationComponent(UploadService.class);
for(int i = 0; i < uploadIds.size(); i++)
{
service.addUploadLimit(uploadIds.get(i), null); // Use the limit set by the service. Warning, the service can allow no size limit (value to 0)
}
setComponentConfig(UIUploadInput.class, null);
}
/**
* @param limitFile the amount of field(s) input upload. If limitFile less than one , the dynamic mode will enable
* @param limitSize the limitation file size (MB) for each upload
*/
public UIUploadInput(String name, String bindingExpression,int limitFile, int limitSize)
{
this(name, bindingExpression, limitFile, limitSize, UploadUnit.MB);
}
/**
* @param limitFile the amount of field(s) input upload. If limitFile less than one , the dynamic mode will enable
* @param limitSize the limitation file size for each upload
* @param unit the unit value of file size (UploadUnit.KB, UploadUnit.MB, UploadUnit.GB)
*/
public UIUploadInput(String name, String bindingExpression, int limitFile, int limitSize, UploadUnit unit)
{
super(name, bindingExpression, String.class);
if(limitFile < 1)
{
dynamic = true;
limitFile = 1;
}
this.limitUnit = unit;
for(int i = 0; i < limitFile; i++)
{
uploadIds.add(new StringBuffer().append(Math.abs(hashCode())).append('-').append(i).toString());
}
UploadService service = getApplicationComponent(UploadService.class);
for(int i = 0; i < limitFile; i++)
{
service.addUploadLimit(uploadIds.get(i), Integer.valueOf(limitSize), unit);
}
setComponentConfig(UIUploadInput.class, null);
}
public String[] getUploadIds()
{
return uploadIds.toArray(new String[uploadIds.size()]);
}
public boolean isDynamicMode()
{
return dynamic;
}
public void addNewUploadId()
{
String lastedUploadId = uploadIds.getLast();
String hash = lastedUploadId.substring(0, lastedUploadId.indexOf('-'));
int newIndex = Integer.valueOf(lastedUploadId.substring(hash.length() + 1)) + 1;
String newUploadId = new StringBuffer().append(hash).append('-').append(newIndex).toString();
uploadIds.addLast(newUploadId);
UploadService service = getApplicationComponent(UploadService.class);
service.addUploadLimit(newUploadId, limitSize, limitUnit);
}
public void removeUploadId(String uploadId)
{
uploadIds.remove(uploadId);
UploadService service = getApplicationComponent(UploadService.class);
service.removeUploadLimit(uploadId);
}
public UploadResource[] getUploadResources() {
List<UploadResource> holder = new ArrayList<UploadResource>();
UploadService service = getApplicationComponent(UploadService.class);
for(int i = 0; i < uploadIds.size(); i++)
{
UploadResource uploadResource = service.getUploadResource(uploadIds.get(i));
if(uploadResource == null) continue;
holder.add(uploadResource) ;
}
return holder.toArray(new UploadResource[holder.size()]);
}
public UploadResource getUploadResource(String uploadId) {
UploadService service = getApplicationComponent(UploadService.class);
return service.getUploadResource(uploadId);
}
public InputStream[] getUploadDataAsStreams() throws FileNotFoundException
{
List<InputStream> holder = new ArrayList<InputStream>();
UploadService service = getApplicationComponent(UploadService.class);
for(int i = 0; i < uploadIds.size(); i++)
{
UploadResource uploadResource = service.getUploadResource(uploadIds.get(i));
if(uploadResource == null) continue;
File file = new File(uploadResource.getStoreLocation());
holder.add(new FileInputStream(file));
}
return holder.toArray(new InputStream[holder.size()]);
}
public InputStream getUploadDataAsStream(String uploadId) throws FileNotFoundException
{
UploadService service = getApplicationComponent(UploadService.class);
UploadResource uploadResource = service.getUploadResource(uploadId);
if(uploadResource == null) return null;
else return new FileInputStream(new File(uploadResource.getStoreLocation()));
}
public void decode(Object input, WebuiRequestContext context) throws Exception
{
}
public static class CreateUploadIdActionListener extends EventListener<UIUploadInput>
{
public void execute(Event<UIUploadInput> event) throws Exception
{
UIUploadInput input = event.getSource();
input.addNewUploadId();
event.getRequestContext().addUIComponentToUpdateByAjax(input);
}
}
public static class RemoveUploadIdActionListener extends EventListener<UIUploadInput>
{
public void execute(Event<UIUploadInput> event) throws Exception
{
UIUploadInput input = event.getSource();
WebuiRequestContext context = event.getRequestContext();
String uploadId = context.getRequestParameter(UIComponent.OBJECTID);
input.removeUploadId(uploadId);
context.addUIComponentToUpdateByAjax(input);
}
}
}