/*******************************************************************************
* Copyright (c) 2011-2014 Fernando Petrola
*
* This file is part of Dragome SDK.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the GNU Public License v3.0
* which accompanies this distribution, and is available at
* http://www.gnu.org/licenses/gpl.html
******************************************************************************/
package com.dragome.model;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.List;
import com.dragome.model.interfaces.Renderer;
import com.dragome.model.interfaces.TakesValueEditor;
import com.dragome.model.interfaces.ValueChangeEvent;
import com.dragome.model.interfaces.ValueChangeHandler;
import com.dragome.model.interfaces.VisualListBox;
import com.dragome.model.interfaces.list.ListModel;
import com.dragome.model.interfaces.list.ListModelChangedEvent;
import com.dragome.model.interfaces.list.ListModelChangedHandler;
import com.dragome.model.interfaces.list.MutableListModel;
import com.dragome.model.pectin.ComponentWithValueAndRendererImpl;
public class VisualListBoxImpl<T> extends ComponentWithValueAndRendererImpl<T> implements VisualListBox<T>
{
private List<T> acceptableValues= new ArrayList<T>();
private int selectedIndex;
private boolean multipleItems;
private Collection<T> selectedValues= new ArrayList<T>();
private MutableListModel<T> listModel;
public MutableListModel<T> getListModel()
{
return listModel;
}
public Collection<T> getSelectedValues()
{
return selectedValues;
}
public boolean isMultipleItems()
{
return multipleItems;
}
public void setMultipleItems(boolean multipleItems)
{
this.multipleItems= multipleItems;
}
public VisualListBoxImpl()
{
}
public VisualListBoxImpl(String name, Renderer<T> renderer, Iterable<T> acceptableValues)
{
super(name, renderer);
setAcceptableValues(acceptableValues);
}
public VisualListBoxImpl(String name, Iterable<T> acceptableValues)
{
super(name, new SimpleRenderer<T>());
setAcceptableValues(acceptableValues);
}
public TakesValueEditor<T> asEditor()
{
return null;
}
public Collection<T> getAcceptableValues()
{
return acceptableValues;
}
public T getValue()
{
return acceptableValues.get(selectedIndex);
}
public void setAcceptableValues(Iterable<T> values)
{
this.acceptableValues.clear();
for (T t : values)
this.acceptableValues.add(t);
}
public void setValue(T value, boolean fireEvents)
{
for (int i= 0; i < acceptableValues.size(); i++)
{
if (acceptableValues.get(i).equals(value))
selectedIndex= i;
}
if (this.listModel != null)
this.listModel.setElements(Arrays.asList(value));
if (fireEvents)
{
fireValueChange(value);
}
}
public void setAcceptableValues(Collection<T> values)
{
setAcceptableValues((Iterable) values);
}
public void setSelectedValues(Iterable<T> selectedValues)
{
this.listModel.setElements((Collection<? extends T>) selectedValues);
}
public void setListModel(MutableListModel<T> listModel)
{
this.listModel= listModel;
this.listModel.addListModelChangedHandler(new ListModelChangedHandler<T>()
{
public void onListDataChanged(ListModelChangedEvent<T> event)
{
List<T> list= ((ListModel<T>) event.getSource()).asUnmodifiableList();
fireListChangedEvent(list);
}
});
}
private void fireListChangedEvent(List<T> list)
{
ValueChangeHandler listener= getListener(ValueChangeHandler.class);
if (listener != null)
listener.onValueChange(new ValueChangeEvent<Collection<T>>(list));
}
}