org.beangle.ems.avatar.service.FileSystemAvatarBase.java Source code

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Here is the source code for org.beangle.ems.avatar.service.FileSystemAvatarBase.java

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/* Copyright c 2005-2012.
 * Licensed under GNU  LESSER General Public License, Version 3.
 * http://www.gnu.org/licenses
 */
package org.beangle.ems.avatar.service;

import java.io.File;
import java.io.IOException;
import java.util.Collections;
import java.util.List;

import org.apache.commons.io.FileUtils;
import org.apache.commons.lang.StringUtils;
import org.beangle.commons.collection.CollectUtils;
import org.beangle.commons.collection.page.Page;
import org.beangle.commons.collection.page.PageLimit;
import org.beangle.commons.collection.page.PagedList;
import org.beangle.commons.collection.page.Pages;
import org.beangle.commons.property.PropertyConfig;
import org.beangle.commons.property.PropertyConfigEvent;
import org.beangle.commons.property.PropertyConfigListener;
import org.beangle.ems.avatar.Avatar;
import org.beangle.ems.avatar.model.FileAvatar;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * 
 * 
 * @author chaostone
 */
public class FileSystemAvatarBase extends AbstractAvatarBase implements PropertyConfigListener {

    private static final Logger logger = LoggerFactory.getLogger(FileSystemAvatarBase.class);
    // 
    private String avatarDir;

    public Page<String> getAvatarNames(PageLimit limit) {
        if (null == avatarDir) {
            logger.error("avatar dir property not config properly");
            return Pages.emptyPage();
        }
        File file = new File(avatarDir);
        if (!file.exists()) {
            return Pages.emptyPage();
        }
        String[] names = file.list();
        List<String> fileNames = CollectUtils.newArrayList();
        for (int i = 0; i < names.length; i++) {
            String name = StringUtils.substringBefore(names[i], ".");
            String ext = StringUtils.substringAfter(names[i], ".");
            if (StringUtils.isNotBlank(name) && containType(ext)) {
                fileNames.add(name);
            }
        }
        Collections.sort(fileNames);
        return new PagedList<String>(fileNames, limit);
    }

    /**
     * ????
     * 
     * @param name
     * @param type
     * @return
     */
    public String getAbsoluteAvatarPath(String name, String type) {
        StringBuilder sb = new StringBuilder(avatarDir);
        sb.append(name).append('.').append(type.toLowerCase());
        return sb.toString();
    }

    public Avatar getAvatar(String name) {
        if (StringUtils.contains(name, '.')) {
            File file = new File(avatarDir + name);
            if (file.exists()) {
                return new FileAvatar(file);
            }
        } else {
            for (int i = 0; i < typeList.size(); i++) {
                StringBuilder sb = new StringBuilder(avatarDir);
                sb.append(name).append('.').append(typeList.get(i));
                File file = new File(sb.toString());
                if (file.exists()) {
                    return new FileAvatar(file);
                }
            }
        }
        return null;
    }

    public String getAvatarDir() {
        return avatarDir;
    }

    public void setAvatarDir(String avatarDir) {
        if (null != avatarDir) {
            if (!avatarDir.endsWith(File.separator)) {
                this.avatarDir = avatarDir + File.separator;
            } else {
                this.avatarDir = avatarDir;
            }
        } else {
            this.avatarDir = null;
        }
    }

    public String getDescription() {
        return ":" + avatarDir
                + " <br><em>??,??:fileSystemAvatarBase.avatarDir.</em>";
    }

    public void setPropertyConfig(PropertyConfig config) {
        if (null != config) {
            config.addConfigListener(this);
            setAvatarDir(config.get(String.class, "fileSystemAvatarBase.avatarDir"));
        }
    }

    public void onConfigEvent(PropertyConfigEvent event) {
        setAvatarDir(event.getSource().get(String.class, "fileSystemAvatarBase.avatarDir"));
    }

    public boolean updateAvatar(String name, File avatar, String type) {
        try {
            FileUtils.copyFile(avatar, new File(getAbsoluteAvatarPath(name, type)));
        } catch (IOException e) {
            logger.error("copy avator error", e);
            return false;
        }
        return true;
    }

}