/*
* Copyright (C) 2004 TiongHiang Lee
*
* This library 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 library 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 library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Email: thlee@onemindsoft.org
*/
package org.onemind.swingweb.mapinput.peerdelegate.java.awt;
import java.awt.Checkbox;
import java.awt.CheckboxGroup;
import java.awt.event.ItemEvent;
import java.util.Arrays;
import java.util.Map;
import java.util.logging.Logger;
import org.onemind.awtbridge.input.BridgeInputContext;
import org.onemind.awtbridge.peer.*;
import org.onemind.swingweb.mapinput.peerdelegate.MapInputDelegate;
/**
* Checkbox input delegate
* @author TiongHiang Lee (thlee@onemindsoft.org)
*
*/
public class CheckboxInputDelegate extends ComponentInputDelegate
{
/** the logger * */
private static final Logger _logger = Logger.getLogger(CheckboxInputDelegate.class.getName());
/** the instance **/
public static MapInputDelegate INSTANCE = new CheckboxInputDelegate();
/**
* {@inheritDoc}
*/
public void processInput(BridgeComponentPeer peer, BridgeInputContext context, Map inputForm)
{
//the checking
if (hasEvent(peer, inputForm))
{
Checkbox cbox = (Checkbox) peer.getComponent();
cbox.setState(!cbox.getState()); //toggle the checkbox
postEvent(context, new ItemEvent(cbox, ItemEvent.ITEM_STATE_CHANGED, cbox, cbox.getState()
? ItemEvent.SELECTED
: ItemEvent.DESELECTED));
} else if (hasGroupEvent(peer, inputForm))
{
Checkbox cbox = (Checkbox) peer.getComponentObject();
CheckboxGroup grp = cbox.getCheckboxGroup();
/*
* should not need to fire unselection Checkbox selected = grp.getSelectedCheckbox(); context.getEventQueue().postEvent(
* new ItemEvent(selected, ItemEvent.ITEM_STATE_CHANGED, selected, ItemEvent.DESELECTED));
*/
grp.setSelectedCheckbox(cbox);
postEvent(context, new ItemEvent(cbox, ItemEvent.ITEM_STATE_CHANGED, cbox, ItemEvent.SELECTED));
}
}
/**
* Whether has group event
* @param peer the peer
* @param form the input form
* @return true if there's group event
*/
protected boolean hasGroupEvent(BridgePeer peer, Map form)
{
Checkbox cbox = (Checkbox) peer.getComponentObject();
CheckboxGroup grp = cbox.getCheckboxGroup();
if (grp != null)
{
//in a button group
BridgeCheckboxGroupPeer grppeer = (BridgeCheckboxGroupPeer) peer.getBridgeToolkit().getContext().getPeer(grp);
if (grppeer != null)
{
Object value = form.get(grppeer.getId());
_logger.finest("Got input value for group=" + value + " peer id = " + peer.getId());
if (value instanceof String)
{
return value.equals(peer.getId()) && grp.getSelectedCheckbox() != cbox;
//this peer is click
} else if (value instanceof String[]){
return Arrays.asList((String[])value).contains(peer.getId());
}
}
}
return false;
}
/**
* {@inheritDoc}
*/
public boolean hasEvent(BridgePeer peer, Map form)
{
Checkbox cbox = (Checkbox) peer.getComponentObject();
if (super.hasEvent(peer, form))
{
Object value = form.get(peer.getId() + "-value");
boolean b = value != null && (value.equals("1") || value.equals("true"));
return cbox.getState() != b;
}
//if state is not the same - like a toggle
//(only applies if the form is always submitted)
return false;
}
}