root/trunk/mlframework/src/eu/moonlight3d/common/ui/propertysheet/BooleanEditorFactory.java

/*
 * Moonlight|3D Copyright (C) 2005 The Moonlight|3D team
 * 
 * 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.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 * 
 */
package eu.moonlight3d.common.ui.propertysheet;

import java.util.ArrayList;

import org.w3c.dom.Element;
import org.w3c.dom.NodeList;

import com.trolltech.qt.gui.QCheckBox;
import com.trolltech.qt.gui.QHBoxLayout;
import com.trolltech.qt.gui.QWidget;

import eu.moonlight3d.framework.localization.L10N;
import eu.moonlight3d.framework.properties.BooleanValue;
import eu.moonlight3d.framework.properties.Property;
import eu.moonlight3d.framework.properties.PropertyContainer;

public class BooleanEditorFactory implements PropertyEditorFactory {
        private class Parameters {
                public String labelText;
        }
        
    public class BooleanValueEditor extends ValueEditor {
        PropertySheet propertySheet;
        Property property;
        QCheckBox checkBox;
        
        BooleanValueEditor(Parameters parameters, PropertySheet sheet, QWidget parent, final Property property)
        {
            super(parent);
            propertySheet=sheet;
            this.property=property;
            
            checkBox=new QCheckBox(this);
            if(parameters.labelText!=null) {
                checkBox.setText(parameters.labelText);
            } else {
                checkBox.setText(property.getName());
            }
            checkBox.stateChanged.connect(this,"stateChanged()");
            
            QHBoxLayout layout=new QHBoxLayout();
            layout.setMargin(0);
            layout.addWidget(checkBox);
            setLayout(layout);
            
            updateFromPropertyValue();
        }
        
        public void stateChanged() {
                setPropertyValue(checkBox.isChecked());
        }
    
        public void setPropertyValue(boolean value)
        {
                try {
                                property.setValue(new BooleanValue(value));
                        } catch (Exception e) {
                                // this cannot happen under normal circumstances
                                e.printStackTrace();
                        }
                propertySheet.notifyPropertyUpdate(property);
        }

                @Override
                public void updateFromPropertyValue() {
                        try {
                                checkBox.setChecked((Boolean) property.getValue().getData());
                        } catch (Exception e) {
                                // this cannot happen under normal circumstances.
                                e.printStackTrace();
                        }
                }
    }

        public String getName() {
                return "BooleanEditor";
        }

        public Object parseExtraParameters(Element parameterRoot) throws Exception {
                Parameters parameters=new Parameters();
                
                if(parameterRoot==null) {
                        return parameters;
                }

                NodeList labelList=parameterRoot.getElementsByTagName("label");
                if(labelList.getLength()>1) {
                        throw new Exception(L10N.translate("only one label can be defined for a boolean property editor"));
                } else if(labelList.getLength()==1) {
                        Element labelElement=(Element) labelList.item(0);
                        parameters.labelText=labelElement.getAttribute("text");
                }
                
                return parameters;
        }

        public ValueEditor generatePropertyEditor(PropertySheet sheet, QWidget parent, PropertyContainer container, ArrayList<String> properties, Object additionalParams) {
                Property property=container.getProperty(properties.get(0));
                if(additionalParams==null) {
                        additionalParams=new Parameters();
                }
        return new BooleanValueEditor((Parameters) additionalParams,sheet,parent,property);
        }
}