/*
 * Licensed to "Neo Technology," Network Engine for Objects in Lund AB
 * (http://neotechnology.com) under one or more contributor license agreements.
 * See the NOTICE file distributed with this work for additional information
 * regarding copyright ownership. Neo Technology licenses this file to you under
 * the Apache License, Version 2.0 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of the License
 * at (http://www.apache.org/licenses/LICENSE-2.0). Unless required by
 * applicable law or agreed to in writing, software distributed under the
 * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS
 * OF ANY KIND, either express or implied. See the License for the specific
 * language governing permissions and limitations under the License.
 */
package org.neo4j.neoclipse.property.action;

import java.util.List;

import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.ui.views.properties.IPropertySheetEntry;
import org.neo4j.graphdb.PropertyContainer;
import org.neo4j.neoclipse.Activator;
import org.neo4j.neoclipse.action.Actions;
import org.neo4j.neoclipse.decorate.SimpleGraphDecorator;
import org.neo4j.neoclipse.preference.DecoratorPreferences;
import org.neo4j.neoclipse.property.NeoPropertySheetPage;

/**
 * Action to delete a property from a PropertyContainer.
 * 
 * @author Anders Nawroth
 */
public class AddNodeLabelAction extends PropertyAction
{
    public AddNodeLabelAction( final Composite parent,
            final NeoPropertySheetPage propertySheet )
    {
        super( Actions.ADD_NODE_LABEL, parent, propertySheet );
    }

    @Override
    protected void performOperation( final PropertyContainer container,
            final IPropertySheetEntry entry )
    {
        String key = entry.getDisplayName();
        IPreferenceStore preferenceStore = Activator.getDefault().getPreferenceStore();
        String propNameSetting = preferenceStore.getString( DecoratorPreferences.NODE_PROPERTY_NAMES );
        List<String> propNames = SimpleGraphDecorator.Settings.listFromString( propNameSetting );
        for ( String name : propNames )
        {
            if ( key.equals( name ) )
            {
                return;
            }
        }
        if ( propNameSetting.trim().length() > 0 )
        {
            propNameSetting += ", ";
        }
        propNameSetting += key;
        preferenceStore.setValue( DecoratorPreferences.NODE_PROPERTY_NAMES,
                propNameSetting );
        propertySheet.fireChangeEvent( container, null, true );
    }
}