/*
Copyright 2008-2010 Gephi
Authors : Mathieu Bastian <mathieu.bastian@gephi.org>
Website : http://www.gephi.org

This file is part of Gephi.

DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.

Copyright 2011 Gephi Consortium. All rights reserved.

The contents of this file are subject to the terms of either the GNU
General Public License Version 3 only ("GPL") or the Common
Development and Distribution License("CDDL") (collectively, the
"License"). You may not use this file except in compliance with the
License. You can obtain a copy of the License at
http://gephi.org/about/legal/license-notice/
or /cddl-1.0.txt and /gpl-3.0.txt. See the License for the
specific language governing permissions and limitations under the
License.  When distributing the software, include this License Header
Notice in each file and include the License files at
/cddl-1.0.txt and /gpl-3.0.txt. If applicable, add the following below the
License Header, with the fields enclosed by brackets [] replaced by
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If you wish your version of this file to be governed by only the CDDL
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"[Contributor] elects to include this software in this distribution
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Contributor(s):

Portions Copyrighted 2011 Gephi Consortium.
 */
package org.gephi.filters.spi;

import java.beans.PropertyEditor;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.gephi.filters.api.PropertyExecutor;
import org.openide.nodes.PropertySupport;
import org.openide.util.Lookup;

/**
 * Properties for filters. All editable properties of a filter must be used
 * through this class, especially setting value should be done by using
 * {@link #setValue(java.lang.Object) }.
 * <p>
 * The role of this class is to define filter's properties in order value
 * changes can be tracked by the system, UI can be generated and values
 * correctly saved in projects file.
 *
 * @author Mathieu Bastian
 */
public final class FilterProperty {

    protected PropertySupport.Reflection property;
    protected Filter filter;
    protected PropertyExecutor propertyExecutor;

    FilterProperty(Filter filter) {
        this.filter = filter;
        propertyExecutor = Lookup.getDefault().lookup(PropertyExecutor.class);
    }

    /**
     * Returns property's name
     *
     * @return property's name
     */
    public String getName() {
        return property.getDisplayName();
    }

    /**
     * Returns property's value, can be <code>null</code>
     *
     * @return property's value
     */
    public Object getValue() {
        try {
            return property.getValue();
        } catch (Exception e) {
            Logger.getLogger("").log(Level.SEVERE, "Error while getting value for property '" + getName() + "'", e);
        }
        return null;
    }

    /**
     * Set property's value. The type of <code>value</code> must match with this
     * property value type.
     *
     * @param value the value that is to be set
     */
    public void setValue(Object value) {
        if (propertyExecutor != null) {
            propertyExecutor.setValue(this, value, new PropertyExecutor.Callback() {

                @Override
                public void setValue(Object value) {
                    try {
                        property.setValue(value);
                    } catch (Exception e) {
                        Logger.getLogger("").log(Level.SEVERE, "Error while setting value for property '" + getName() + "'", e);
                    }
                }
            });
        } else {
            try {
                property.setValue(value);
            } catch (Exception e) {
                Logger.getLogger("").log(Level.SEVERE, "Error while setting value for property '" + getName() + "'", e);
            }
        }
    }

    /**
     * Returns the <code>PropertyEditor</code> associated to the property value.
     *
     * @return the property editor
     */
    public PropertyEditor getPropertyEditor() {
        return property.getPropertyEditor();
    }

    /**
     * Sets the property editor class. The class must implement
     * {@link PropertyEditor}.
     *
     * @param clazz the property editor class
     */
    public void setPropertyEditorClass(Class<? extends PropertyEditor> clazz) {
        property.setPropertyEditorClass(clazz);
    }

    /**
     * Returns the property's value type.
     *
     * @return the value type
     */
    public Class getValueType() {
        return property.getValueType();
    }

    /**
     * Returns the filter instance this property is associated to.
     *
     * @return the filter this property belongs to
     */
    public Filter getFilter() {
        return filter;
    }

    /**
     * Creates a property.
     *
     * @param filter The filter instance
     * @param valueType The type of the property value, ex:
     * <code>Double.class</code>
     * @param propertyName The display name of the property
     * @param getMethod The name of the get method for this property, must exist
     * to make Java reflexion working.
     * @param setMethod The name of the set method for this property, must exist
     * to make Java reflexion working.
     * @return the created property
     * @throws NoSuchMethodException if the getter or setter methods cannot be
     * found
     */
    public static FilterProperty createProperty(Filter filter, Class valueType, String propertyName, String getMethod, String setMethod) throws NoSuchMethodException {
        final FilterProperty filterProperty = new FilterProperty(filter);
        PropertySupport.Reflection property = new PropertySupport.Reflection(filter, valueType, getMethod, setMethod);
        property.setName(propertyName);
        filterProperty.property = property;

        return filterProperty;
    }

    /**
     * Creates a property.
     *
     * @param filter filter instance
     * @param valueType type of the property value, ex:
     * <code>Double.class</code>
     * @param fieldName java field name of the property
     * @return the created property
     * @throws NoSuchMethodException if the getter or setter methods cannot be
     * found
     */
    public static FilterProperty createProperty(Filter filter, Class valueType, String fieldName) throws NoSuchMethodException {
        if (valueType == Boolean.class) {
            valueType = boolean.class;
        }
        final FilterProperty filterProperty = new FilterProperty(filter);
        PropertySupport.Reflection property = new PropertySupport.Reflection(filter, valueType, fieldName);
        property.setName(fieldName);
        filterProperty.property = property;

        return filterProperty;
    }
}
