org.apache.myfaces.custom.captcha.AbstractCAPTCHAComponent Maven / Gradle / Ivy

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JSF components and utilities that can be used with any JSF implementation. This library is based on the JSF1.1 version of Tomahawk, but with minor source code and build changes to take advantage of JSF2.1 features. A JSF2.1 implementation is required to use this version of the Tomahawk library.

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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.apache.myfaces.custom.captcha;

import javax.faces.component.UIComponentBase;
import javax.faces.context.ExternalContext;
import org.apache.myfaces.tomahawk.config.TomahawkConfig;

/**
 * 
 * @JSFComponent
 *   name = "t:captcha"
 *   class = "org.apache.myfaces.custom.captcha.CAPTCHAComponent"
 *   tagClass = "org.apache.myfaces.custom.captcha.CAPTCHATag"
 * @since 1.1.7
 * @author Hazem Saleh
 *
 */
public abstract class AbstractCAPTCHAComponent extends UIComponentBase {

    public static String COMPONENT_TYPE = "org.apache.myfaces.CAPTCHA";
    public static String COMPONENT_FAMILY = "org.apache.myfaces.CAPTCHA";
    public static String DEFAULT_RENDERER_TYPE = "org.apache.myfaces.CAPTCHA";
    
    // Value binding constants
    public static final String ATTRIBUTE_CAPTCHA_SESSION_KEY_NAME = "captchaSessionKeyName";
    public static final String ATTRIBUTE_IMAGE_WIDTH = "imageWidth";
    public static final String ATTRIBUTE_IMAGE_HEIGHT = "imageHeight";
    
    /**
     * Determines the CAPTCHA session key name. If
     * org.apache.myfaces.tomahawk.PREFIX_CAPTCHA_SESSION_KEY is set to true (default),
     * a prefix defined by the component is added to this key name.
     * 
     * @JSFProperty
     * @return
     */
    public abstract String getCaptchaSessionKeyName();
    
    /**
     * Integer to indicate the CAPTCHA width. default is 290.
     * 
     * @JSFProperty
     */
    public abstract String getImageWidth();

    /**
     * Integer to indicate the CAPTCHA height. default is 81.
     * 
     * @JSFProperty
     */
    public abstract String getImageHeight();

    /**
     * Return the value stored in session map related to captchaSessionKeyName
     * 
     * @return 
     */
    public String getCaptchaSessionValue()
    {
        //Return the value stored
        ExternalContext externalContext = getFacesContext().getExternalContext();
        TomahawkConfig config = TomahawkConfig.getCurrentInstance(externalContext);
        if (externalContext.getSession(false) != null)
        {
            return (String) getFacesContext().getExternalContext().getSessionMap().get(
                    config.isPrefixCaptchaSessionKey() ? 
                        ATTRIBUTE_CAPTCHA_SESSION_KEY_NAME+"_"+getCaptchaSessionKeyName() : 
                        getCaptchaSessionKeyName());
        }
        return null;
    }
}