Package org.onemind.swingweb.mapinput.peerdelegate.java.awt

Source Code of org.onemind.swingweb.mapinput.peerdelegate.java.awt.TextComponentInputDelegate

/*
* 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.TextComponent;
import java.awt.event.TextEvent;
import java.util.Map;
import org.onemind.awtbridge.event.BridgeEventQueue;
import org.onemind.awtbridge.input.BridgeInputContext;
import org.onemind.awtbridge.peer.BridgeComponentPeer;
import org.onemind.awtbridge.peer.BridgePeer;
import org.onemind.swingweb.mapinput.peerdelegate.MapInputDelegate;
/**
* The TextComponent input delegate
* @author TiongHiang Lee (thlee@onemindsoft.org)
*
*/
public class TextComponentInputDelegate extends ComponentInputDelegate
{

    /** the instance **/
    public static MapInputDelegate INSTANCE = new TextComponentInputDelegate();

    /**
     * {@inheritDoc}
     */
    public void processInput(BridgeComponentPeer peer, BridgeInputContext context, Map inputForm)
    {
        TextComponent com = (TextComponent) peer.getComponent();
        if (com.isEditable() && hasEvent(peer, inputForm))
        {
            String value = (String) inputForm.get(peer.getId());
            com.setText(value);
            createTextEvent(context, peer, com);
        }
    }

    /**
     * Create the text event
     * @param context the context
     * @param peer the peer
     * @param com the component
     */
    protected void createTextEvent(BridgeInputContext context, BridgePeer peer, TextComponent com)
    {
        postEvent(context, new TextEvent(com, TextEvent.TEXT_VALUE_CHANGED), BridgeEventQueue.HIGH_PRIORITY);
    }

    /**
     * {@inheritDoc}
     */
    public boolean hasEvent(BridgePeer peer, Map form)
    {
        String text = (String) form.get(peer.getId());
        if (text != null)
        {
            TextComponent com = (TextComponent) peer.getComponentObject();
            return !text.equals(com.getText());
        } else
        {
            return false;
        }
    }
}
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