inputtag.java

OA典型例子

/*
 * $Id: InputTag.java,v 1.2 2001/10/20 01:21:22 ro89390 Exp $
 * Copyright 2001 Sun Microsystems, Inc. All rights reserved.
 */

package com.sure.taglibs.smart;

import javax.servlet.jsp.JspTagException;
import javax.servlet.jsp.tagext.BodyTagSupport;
import javax.servlet.jsp.tagext.BodyContent;

import java.io.IOException;
import java.util.*;

/**
 * HTML 'input' tag. Use with NameTag and ValueTag.
 */
public class InputTag extends BodyTagSupport {

    String value;
    String name;
    String type;
    int size;
    String validation;
    int maxlength;
    String cssClass;

    public void setCssClass(String c) { cssClass = c; }

    public void setType(String t) { type = t; }

    public void setSize(int s) { size = s; }

    public void setName(String n) { name = n; }

    public void setValue(String v) { value = v; }

    public void setValidation(String v) { validation = v; }

    public void setMaxlength(int ml) { maxlength = ml; }

    public int doStartTag() throws JspTagException {
        return EVAL_BODY_BUFFERED;
    }

    public int doEndTag() throws JspTagException {
        try {
            FormTag tag
                = (FormTag) findAncestorWithClass(this, FormTag.class);
            if (tag != null && validation != null) {
                tag.putValidatedField(name, type);
            }

            StringBuffer html = new StringBuffer();
            html.append("<input");
            html.append(size > 0 ? (" size=\"" + size + "\"") : "");
            html.append(" type=\"" + type + "\"");
            html.append(name != null ? (" name=\"" + name + "\"") : "");
            html.append(value != null ? (" value=\"" + value + "\"") : "");
            html.append(cssClass != null
                        ? (" class=\"" + cssClass + "\"")
                        : "");
            html.append(maxlength > 0
                        ? (" maxlength=\"" + maxlength + "\"")
                        : "");
            html.append(">");
            pageContext.getOut().print(html.toString());
            return EVAL_PAGE;
        }
        catch (IOException e) {
            throw new JspTagException("InputTag: " + e.getMessage());
        }
    }
}