imgtag.java

这是一个轻便的j2ee的web应用框架,是一个在多个项目中运用的实际框架,采用struts,hebinate,xml等技术,有丰富的tag,role,navigation,session,dictio

/*
 * $Header: /sfroot/cvs/esimple/src/core/com/esimple/framework/web/taglib/html/ImgTag.java,v 1.1.1.1 2004/09/08 06:38:17 lava Exp $
 * $Revision: 1.1.1.1 $
 * $Date: 2004/09/08 06:38:17 $
 *
 * ====================================================================
 *
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 1999-2001 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Tomcat", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact [e-mail].
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 *
 */

package com.esimple.framework.web.taglib.html;

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

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.jsp.JspException;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import org.apache.struts.util.MessageResources;
import org.apache.struts.util.RequestUtils;
import org.apache.struts.util.ResponseUtils;

import com.esimple.framework.bean.BeanContainerFactory;
import com.esimple.framework.web.style.StyleManager;


/**
 * Generate an IMG tag to the specified image URI.
 * <p>
 * TODO:
 * <ul>
 *   <li>Make the <strong>alt</strong>, <strong>src</strong>, and
 *       <strong>lowsrc</strong> settable from properties (for i18n)</li>
 * </ul>
 *
 * @author Michael Westbay
 * @author Craig McClanahan
 * @version $Revision: 1.1.1.1 $
 */

public class ImgTag extends BaseHandlerTag {
	private Log log = LogFactory.getLog(this.getClass());

    // ------------------------------------------------------------- Properties

    /**
     * The property to specify where to align the image.
     */
    protected String align = null;

    public String getAlign() {
        return (this.align);
    }

    public void setAlign(String align) {
        this.align = align;
    }

    /**
     * The border size around the image.
     */
    protected String border = null;

    public String getBorder() {
        return (this.border);
    }

    public void setBorder(String border) {
        this.border = border;
    }

    /**
     * The image height.
     */
    protected String height = null;

    public String getHeight() {
        return (this.height);
    }

    public void setHeight(String height) {
        this.height = height;
    }

    /**
     * The horizontal spacing around the image.
     */
    protected String hspace = null;

    public String getHspace() {
        return (this.hspace);
    }

    public void setHspace(String hspace) {
        this.hspace = hspace;
    }

    /**
     * The image name for named images.
     */
    protected String imageName = null;

    public String getImageName() {
        return (this.imageName);
    }

    public void setImageName(String imageName) {
        this.imageName = imageName;
    }

    /**
     * Server-side image map declaration.
     */
    protected String ismap = null;

    public String getIsmap() {
        return (this.ismap);
    }

    public void setIsmap(String ismap) {
        this.ismap = ismap;
    }

    /**
     * The low resolution image source URI.
     * @deprecated This is not defined in the HTML 4.01 spec and will be removed in a
     * future version of Struts.
     */
    protected String lowsrc = null;

    /**
     * @deprecated This is not defined in the HTML 4.01 spec and will be removed in a
     * future version of Struts.
     */
    public String getLowsrc() {
        return (this.lowsrc);
    }

    public void setLowsrc(String lowsrc) {
        this.lowsrc = lowsrc;
    }

    /**
     * The message resources for this package.
     */
    protected static MessageResources messages =
        MessageResources.getMessageResources(Constants.Package + ".LocalStrings");

    /**
     * The JSP bean name for query parameters.
     */
    protected String name = null;

    public String getName() {
        return (this.name);
    }

    public void setName(String name) {
        this.name = name;
    }

    /**
     * The module-relative path, starting with a slash character, of the
     * image to be displayed by this rendered tag.
     */
    protected String page = null;

    public String getPage() {
        return (this.page);
    }

    public void setPage(String page) {
        this.page = page;
    }

    /**
     * The message resources key under which we should look up the
     * <code>page</code> attribute for this generated tag, if any.
     */
    protected String pageKey = null;

    public String getPageKey() {
        return (this.pageKey);
    }

    public void setPageKey(String pageKey) {
        this.pageKey = pageKey;
    }

    /**
     * In situations where an image is dynamically generated (such as to create
     * a chart graph), this specifies the single-parameter request parameter
     * name to generate.
     */
    protected String paramId = null;

    public String getParamId() {
        return (this.paramId);
    }

    public void setParamId(String paramId) {
        this.paramId = paramId;
    }

    /**
     * The single-parameter JSP bean name.
     */
    protected String paramName = null;

    public String getParamName() {
        return (this.paramName);
    }

    public void setParamName(String paramName) {
        this.paramName = paramName;
    }

    /**
     * The single-parameter JSP bean property.
     */
    protected String paramProperty = null;

    public String getParamProperty() {
        return (this.paramProperty);
    }

    public void setParamProperty(String paramProperty) {
        this.paramProperty = paramProperty;
    }

    /**
     * The single-parameter JSP bean scope.
     */
    protected String paramScope = null;

    public String getParamScope() {
        return (this.paramScope);
    }

    public void setParamScope(String paramScope) {
        this.paramScope = paramScope;
    }

    /**
     * The JSP bean property name for query parameters.
     */
    protected String property = null;

    public String getProperty() {
        return (this.property);
    }

    public void setProperty(String property) {
        this.property = property;
    }

    /**
     * The scope of the bean specified by the name property, if any.
     */
    protected String scope = null;

    public String getScope() {
        return (this.scope);
    }

    public void setScope(String scope) {
        this.scope = scope;