/**
* Copyright (C) 2009 eXo Platform SAS.
*
* This 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 2.1 of
* the License, or (at your option) any later version.
*
* This software 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.exoplatform.webui.form;
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.event.Event.Phase;
import org.exoplatform.webui.form.validator.Validator;
import java.io.Writer;
import java.lang.reflect.Constructor;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
/**
* Author : Nhu Dinh Thuan
* nhudinhthuan@exoplatform.com
* Sep 14, 2006
*
* Represents a multi value selector
*/
@ComponentConfig(events = {
@EventConfig(listeners = UIFormMultiValueInputSet.AddActionListener.class, phase = Phase.DECODE),
@EventConfig(listeners = UIFormMultiValueInputSet.RemoveActionListener.class, phase = Phase.DECODE)})
public class UIFormMultiValueInputSet extends UIFormInputContainer<List>
{
/**
* A list of validators
*/
protected List<Validator> validators;
/**
* The type of items in the selector
*/
private Class<? extends UIFormInputBase> clazz_;
private Constructor constructor_ = null;
private Object[] constructorParams_;
/**
* Whether this field is enabled
*/
protected boolean enable_ = true;
/**
* Whether this field is in read only mode
*/
protected boolean readonly_ = false;
public UIFormMultiValueInputSet() throws Exception
{
super(null, null);
}
public UIFormMultiValueInputSet(String name, String bindingField) throws Exception
{
super(name, bindingField);
setComponentConfig(getClass(), null);
}
public Class<List> getTypeValue()
{
return List.class;
}
/**
*
* @param clazz
*/
public void setType(Class<? extends UIFormInputBase> clazz)
{
this.clazz_ = clazz;
Constructor[] constructors = clazz_.getConstructors();
if (constructors.length > 0)
constructor_ = constructors[0];
}
/**
* define a <code>Constructor</code> which's invoked
*
* @param constructorParameterTypes list of parameter type which is defined in constructor
* @throws SecurityException
* @throws NoSuchMethodException
*/
public void setConstructorParameterTypes(Class<?>... constructorParameterTypes) throws SecurityException, NoSuchMethodException
{
Constructor<?> constructor = this.clazz_.getConstructor(constructorParameterTypes);
if(constructor != null)
{
this.constructor_ = constructor;
}
}
/**
* pass values to the <code>Constructor</code>
* You only set constructor parameter values after seted constructor by {@link #setConstructorParameterTypes(Class...)}
* @param values
* @throws SecurityException
* @throws NoSuchMethodException
*/
public void setConstructorParameterValues(Object[] values) throws SecurityException, NoSuchMethodException
{
this.constructorParams_ = values;
// List<Class<?>> parameterTypes = new ArrayList<Class<?>>();
//
// for (Object clazz : values)
// {
// parameterTypes.add(clazz.getClass());
// }
//
// Class<?> [] arrParameterTypes = (Class[]) parameterTypes.toArray(new Class[parameterTypes.size()]);
// this.setConstructorParameterTypes(arrParameterTypes);
}
public Class<? extends UIFormInputBase> getUIFormInputBase()
{
return clazz_;
}
/**
* @return the selected items in the selector
*/
public List<?> getValue()
{
List<Object> values = new ArrayList<Object>();
for (UIComponent child : getChildren())
{
UIFormInputBase uiInput = (UIFormInputBase)child;
if (uiInput.getValue() == null)
continue;
values.add(uiInput.getValue());
}
return values;
}
@SuppressWarnings("unchecked")
public UIFormInput setValue(List<?> values) throws Exception
{
getChildren().clear();
for (int i = 0; i < values.size(); i++)
{
UIFormInputBase uiInput = createUIFormInput(i);
uiInput.setValue(values.get(i));
}
return this;
}
public boolean isEnable()
{
return enable_;
}
public UIFormMultiValueInputSet setEnable(boolean enable)
{
enable_ = enable;
return this;
}
public boolean isEditable()
{
return !readonly_;
}
public UIFormMultiValueInputSet setEditable(boolean editable)
{
readonly_ = !editable;
return this;
}
public void processDecode(WebuiRequestContext context) throws Exception
{
super.processDecode(context);
UIForm uiForm = getAncestorOfType(UIForm.class);
String action = uiForm.getSubmitAction();
Event<UIComponent> event = createEvent(action, Event.Phase.DECODE, context);
if (event == null)
return;
event.broadcast();
}
public void processRender(WebuiRequestContext context) throws Exception
{
if (getChildren() == null || getChildren().size() < 1)
createUIFormInput(0);
Writer writer = context.getWriter();
UIForm uiForm = getAncestorOfType(UIForm.class);
int size = getChildren().size();
// ResourceBundle res = context.getApplicationResourceBundle() ;
for (int i = 0; i < size; i++)
{
UIFormInputBase uiInput = getChild(i);
writer.append("<div class=\"MultiValueContainer\">");
uiInput.setEditable(!readonly_);
uiInput.setEnable(enable_);
uiInput.processRender(context);
if ((size >= 2) || ((size == 1) && (uiInput.getValue() != null)))
{
writer.append("<img onclick=\"");
writer.append(uiForm.event("Remove", uiInput.getId())).append("\" title=\"Remove Item\" alt=\"\"");
writer
.append(" class=\"MultiFieldAction Remove16x16Icon\" src=\"/eXoResources/skin/sharedImages/Blank.gif\" />");
}
if (i == size - 1)
{
writer.append("<img onclick=\"");
writer.append(uiForm.event("Add", getId())).append("\" title=\"Add Item\" alt=\"\"");
writer
.append(" class=\"MultiFieldAction AddNewNodeIcon\" src=\"/eXoResources/skin/sharedImages/Blank.gif\" />");
}
writer.append("</div>");
}
}
public UIFormInputBase createUIFormInput(int idx) throws Exception
{
if(constructor_ == null) return null;
Class[] classes = constructor_.getParameterTypes();
UIFormInputBase inputBase;
String compName = getId() + String.valueOf(idx);
if (classes.length > 0) {
if (constructorParams_ == null)
{
Object[] params = new Object[classes.length];
for (int i = 0; i < classes.length; i++)
{
if (classes[i].isPrimitive())
{
if (classes[i] == boolean.class)
params[i] = false;
else
params[i] = 0;
}
}
params[0] = compName;
inputBase = (UIFormInputBase) constructor_.newInstance(params);
}
else
{
inputBase = (UIFormInputBase) constructor_.newInstance(constructorParams_);
}
} else {
inputBase = (UIFormInputBase)constructor_.newInstance();
}
inputBase.setName(compName);
inputBase.setId(compName);
List<Validator> validators = this.getValidators();
if (validators != null)
{
for (Validator validator : validators)
{
inputBase.addValidator(validator.getClass());
}
}
addChild(inputBase);
return inputBase;
}
static public class AddActionListener extends EventListener<UIFormMultiValueInputSet>
{
public void execute(Event<UIFormMultiValueInputSet> event) throws Exception
{
UIFormMultiValueInputSet uiSet = event.getSource();
String id = event.getRequestContext().getRequestParameter(OBJECTID);
if (uiSet.getId().equals(id))
{
// get max id
List<UIComponent> children = uiSet.getChildren();
if (children.size() > 0)
{
UIFormInputBase uiInput = (UIFormInputBase)children.get(children.size() - 1);
String index = uiInput.getId();
int maxIndex = Integer.parseInt(index.replaceAll(id, ""));
uiSet.createUIFormInput(maxIndex + 1);
}
}
}
}
static public class RemoveActionListener extends EventListener<UIFormMultiValueInputSet>
{
public void execute(Event<UIFormMultiValueInputSet> event) throws Exception
{
UIFormMultiValueInputSet uiSet = event.getSource();
String id = event.getRequestContext().getRequestParameter(OBJECTID);
uiSet.removeChildById(id);
}
}
}