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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF 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.netbeans.modules.xml.axi;

import java.util.List;
import org.netbeans.modules.xml.axi.datatype.Datatype;
import org.netbeans.modules.xml.axi.visitor.AXIVisitor;
import org.netbeans.modules.xml.schema.model.Form;
import org.netbeans.modules.xml.schema.model.SchemaComponent;

/**
 * Represents an Element in XML Schema.
 *
 * @author Samaresh ([email protected])
 */
public abstract class Element extends AbstractElement implements AXIType {
    
    /**
     * Creates a new instance of Element
     */
    public Element(AXIModel model) {
        super(model);
    }
    
    /**
     * Creates a new instance of Element
     */
    public Element(AXIModel model, SchemaComponent schemaComponent) {
        super(model, schemaComponent);
    }
    
    /**
     * Creates a proxy for this Element.
     */
    public Element(AXIModel model, AXIComponent sharedComponent) {
        super(model, sharedComponent);
    }
        
    /**
     * Allows a visitor to visit this Element.
     */
    public void accept(AXIVisitor visitor) {
        visitor.visit(this);
    }
    
    /**
     * Returns true if it is a reference, false otherwise.
     */
    public abstract boolean isReference();
            
    /**
     * Returns the referent if isReference() is true.
     */
    public abstract Element getReferent();
    
    /**
     * Returns abstract property.
     */
    public abstract boolean getAbstract();
    
    /**
     * Sets the abstract property.
     */
    public abstract void setAbstract(boolean value);
    
    /**
     * Returns the block.
     */
    public abstract String getBlock();
        
    /**
     * Sets the block property.
     */
    public abstract void setBlock(String value);
    
    /**
     * Returns the final property.
     */
    public abstract String getFinal();
    
    /**
     * Sets the final property.
     */
    public abstract void setFinal(String value);
    
    /**
     * Returns the fixed value.
     */
    public abstract String getFixed();
    
    /**
     * Sets the fixed value.
     */
    public abstract void setFixed(String value);
    
    /**
     * Returns the default value.
     */
    public abstract String getDefault();
    
    /**
     * Sets the default value.
     */
    public abstract void setDefault(String value);
    
    /**
     * Returns the form.
     */
    public abstract Form getForm();
    
    /**
     * Sets the form.
     */
    public abstract void setForm(Form value);
        
    /**
     * Returns the nillable.
     */
    public abstract boolean getNillable();
    
    /**
     * Sets the nillable property.
     */
    public abstract void setNillable(boolean value);

    /**
     * used  by property editor
     */
    public Boolean isNillable() {
        return Boolean.valueOf(getNillable());
    }
	
    /**
     * used  by property editor
     */
    public void setNillable(Boolean nillable) {
        if(nillable != null)
            setNillable(nillable.booleanValue());
    }
	
    /**
     * Returns the complex type of this element, if there is one.
     * Null for element with simple type or anonymous type.
     */
    public abstract AXIType getType();
	
    /**
     * sets the type of this element.
     */
    public abstract void setType(AXIType type);	
        
    /**
     * String representation of this Element.
     */
    public String toString() {
        return getName();
    }
    
    ////////////////////////////////////////////////////////////////////
    ////////////////////////// member variables ////////////////////////
    ////////////////////////////////////////////////////////////////////
    protected String finalValue;
    protected String fixedValue;
    protected String defaultValue;
    protected Form form;
    protected String block;
    protected boolean isAbstract;
    protected boolean isNillable;
    
    ////////////////////////////////////////////////////////////////////
    ////////////////// Properties for firing events ////////////////////
    ////////////////////////////////////////////////////////////////////
    public static final String PROP_FINAL         = "final"; // NOI18N
    public static final String PROP_FIXED         = "fixed"; // NOI18N
    public static final String PROP_DEFAULT       = "default"; // NOI18N
    public static final String PROP_FORM          = "form"; // NOI18N
    public static final String PROP_BLOCK         = "block"; // NOI18N
    public static final String PROP_ABSTRACT      = "abstract"; // NOI18N
    public static final String PROP_NILLABLE      = "nillable"; // NOI18N
    public static final String PROP_TYPE          = "type"; // NOI18N	
    public static final String PROP_ELEMENT_REF   = "elementRef"; // NOI18N
}