/*******************************************************************************
 * Copyright (c) 2005-2008 Polarion Software.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *    Alexander Gurov - Initial API and implementation
 *******************************************************************************/

package org.eclipse.team.svn.ui.verifier;

import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

import org.eclipse.swt.widgets.Control;

/**
 * Abstract verifier implementation, that provides formatted message support
 * 
 * @author Alexander Gurov
 */
public abstract class AbstractFormattedVerifier extends AbstractVerifier {
    public static final String FIELD_NAME = "$FIELD_NAME$"; //$NON-NLS-1$
    protected Map<String, String> placeHolders;

    public AbstractFormattedVerifier(String fieldName) {
        super();
        this.placeHolders = new HashMap<String, String>();
        this.setPlaceHolder(AbstractFormattedVerifier.FIELD_NAME, fieldName.replace(":", "")); //$NON-NLS-1$ //$NON-NLS-2$
    }

	public void setPlaceHolder(String placeHolder, String value) {
		this.placeHolders.put(placeHolder, value);
	}
	
	public String getPlaceHolder(String placeHolder) {
		return this.placeHolders.get(placeHolder);
	}
	
    protected String getErrorMessage(Control input) {
        return this.getFormattedMessage(this.getErrorMessageImpl(input));
    }

    protected String getWarningMessage(Control input) {
        return this.getFormattedMessage(this.getWarningMessageImpl(input));
    }

    protected abstract String getErrorMessageImpl(Control input);
    protected abstract String getWarningMessageImpl(Control input);

	protected String getFormattedMessage(String message) {
	    if (message != null) {
			for (Iterator<Map.Entry<String, String>> it = this.placeHolders.entrySet().iterator(); it.hasNext(); ) {
				Map.Entry<String, String> entry = it.next();
				String key = entry.getKey();
				String value = entry.getValue() == null ? "" : entry.getValue().toString(); //$NON-NLS-1$
				int idx = message.indexOf(key);
				if (idx != -1) {
				    message = message.substring(0, idx) + value + message.substring(idx + key.length());
				}
			}
	    }
		return message;
	}
	
}