/*
 * 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.apache.xerces.impl.validation;

import java.util.ArrayList;

/**
 * ValidationManager is a coordinator property for validators in the 
 * pipeline. Each validator must know how to interact with
 * this property. Validators are not required to know what kind of 
 * other validators present in the pipeline, but should understand
 * that there are others and that some coordination is required.
 * 
 * @xerces.internal
 * 
 * @author Elena Litani, IBM
 * @version $Id: ValidationManager.java 883496 2009-11-23 20:46:00Z knoaman $
 */
public class ValidationManager {

    protected final ArrayList fVSs = new ArrayList();
    protected boolean fGrammarFound = false;

    // used by the DTD validator to tell other components that it has a
    // cached DTD in hand so there's no reason to 
    // scan external subset or entity decls.
    protected boolean fCachedDTD = false;    
    
    /**
     * Each validator should call this method to add its ValidationState into
     * the validation manager.
     */
    public final void addValidationState(ValidationState vs) {
        fVSs.add(vs);
    }

    /**
     * Set the information required to validate entity values.
     */
    public final void setEntityState(EntityState state) {
        for (int i = fVSs.size()-1; i >= 0; i--) {
            ((ValidationState)fVSs.get(i)).setEntityState(state);
        }
    }
    
    public final void setGrammarFound(boolean grammar){
        fGrammarFound = grammar;
    }
        
    public final boolean isGrammarFound(){
        return fGrammarFound;
    }

    public final void setCachedDTD(boolean cachedDTD) {
        fCachedDTD = cachedDTD;
    } // setCachedDTD(boolean)

    public final boolean isCachedDTD() {
        return fCachedDTD;
    } // isCachedDTD():  boolean
    
        
    public final void reset () {
        fVSs.clear();
        fGrammarFound = false;
        fCachedDTD = false;
    }
}
