com.trenako.web.tags.AvatarTags.java Source code

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Here is the source code for com.trenako.web.tags.AvatarTags.java

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/*
 * Copyright 2012 the original author or authors.
 * 
 * Licensed 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 com.trenako.web.tags;

import java.io.IOException;

import javax.servlet.jsp.JspException;
import javax.servlet.jsp.JspWriter;

import org.springframework.beans.factory.annotation.Autowired;

import com.trenako.entities.Account;
import com.trenako.services.AccountsService;

import de.bripkens.gravatar.DefaultImage;
import de.bripkens.gravatar.Gravatar;
import de.bripkens.gravatar.Rating;

/**
 * It represents the tag to show the user's gravatar image.
 * 
 * <blockquote>
 * <pre>
 * <tk:gravatar size="48" user="${slug}" showGravatarLink="true" showName="true" />
 * </pre>
 * </blockquote>
 * 
 * @author Carlo Micieli
 *
 */
@SuppressWarnings("serial")
public class AvatarTags extends SpringTagSupport {

    private static final int DEFAULT_SIZE = 48;

    private AccountsService userService;

    private int size;
    private String user;
    private boolean showGravatarLink;
    private boolean showName;

    public void setSize(int size) {
        this.size = size;
    }

    public void setUser(String user) {
        this.user = user;
    }

    public void setShowGravatarLink(boolean showGravatarLink) {
        this.showGravatarLink = showGravatarLink;
    }

    public void setShowName(boolean showName) {
        this.showName = showName;
    }

    @Autowired
    public void setAccountsService(AccountsService accountsService) {
        this.userService = accountsService;
    }

    int getSize() {
        if (size <= 0) {
            return DEFAULT_SIZE;
        }
        return size;
    }

    String getUser() {
        return user;
    }

    boolean showGravatarLink() {
        return showGravatarLink;
    }

    boolean showUsername() {
        return showName;
    }

    @Override
    protected int writeTagContent(JspWriter jspWriter, String contextPath) throws JspException {

        Account account = userService.findBySlug(getUser());
        if (account == null) {
            return SKIP_BODY;
        }

        String gravatarImageURL = new Gravatar().setSize(getSize()).setHttps(true)
                .setRating(Rating.PARENTAL_GUIDANCE_SUGGESTED).setStandardDefaultImage(DefaultImage.MYSTERY_MAN)
                .getUrl(account.getEmailAddress());

        try {
            StringBuilder sb = new StringBuilder();

            if (showGravatarLink()) {
                sb.append("\n<a href=\"http://gravatar.com/emails/\">");
            }

            sb.append("\n<img ").append("height=\"").append(getSize()).append("\" ").append("width=\"")
                    .append(getSize()).append("\" ").append("src=\"").append(gravatarImageURL).append("\" />");

            if (showGravatarLink()) {
                sb.append("\n</a>");
            }

            if (showUsername()) {
                sb.append("\n<br/>");
                sb.append("\n" + account.getDisplayName());
            }

            jspWriter.append(sb.toString());
        } catch (IOException e) {
            throw new JspException(e);
        }

        return SKIP_BODY;
    }

}