/*******************************************************************************
 * Copyright (c) 2005, 2009 IBM Corporation and others.
 * 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:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.ui.internal.activities.ws;

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

import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.ui.internal.activities.Persistence;
import org.eclipse.ui.internal.registry.IWorkbenchRegistryConstants;

/**
 */
public class RegistryTriggerPoint extends AbstractTriggerPoint {

    private String id;

    private IConfigurationElement element;

    private Map hints;

    /**
     * Create a new instance of this class.
     * 
     * @param id the id of the trigger point
     * @param element the defining configuration element
     */
    public RegistryTriggerPoint(String id, IConfigurationElement element) {
        this.id = id;
        this.element = element;
    }

    /*
     * (non-Javadoc)
     * 
     * @see org.eclipse.ui.activities.ITriggerPoint#getId()
     */
    public String getId() {
        return id;
    }

    /*
     * (non-Javadoc)
     * 
     * @see org.eclipse.ui.activities.ITriggerPoint#getStringHint(java.lang.String)
     */
    public String getStringHint(String key) {
        return (String) getHints().get(key);
    }

    /*
     * (non-Javadoc)
     * 
     * @see org.eclipse.ui.activities.ITriggerPoint#getBooleanHint(java.lang.String)
     */
    public boolean getBooleanHint(String key) {
        return Boolean.valueOf(getStringHint(key)).booleanValue();
    }

    /**
     * Lazily create the hints.
     * 
     * @return the hint map
     */
    private Map getHints() {
        if (hints == null) {
            hints = new HashMap();

            IConfigurationElement[] hintElements = element
                    .getChildren(IWorkbenchRegistryConstants.TAG_HINT);
            for (int i = 0; i < hintElements.length; i++) {
                String id = hintElements[i]
                        .getAttribute(IWorkbenchRegistryConstants.ATT_ID);
                String value = hintElements[i]
                        .getAttribute(IWorkbenchRegistryConstants.ATT_VALUE);

                if (id == null || value == null) {
					Persistence.log(element, Persistence.ACTIVITY_TRIGGER_HINT_DESC, "hint must contain ID and value"); //$NON-NLS-1$
					continue;
				}
				hints.put(id, value);
            }
        }

        return hints;
    }
}