linkprimitive.java

考勤管理系统源码

package com.wiley.compBooks.EJwithUML.Base.HtmlPrimitives.ContentElements;

import com.wiley.compBooks.EJwithUML.Base.HtmlPrimitives.Core.*;
import java.util.*;

/**
 * The LinkPrimitive class encapsulates the details of building
 * an a href tag for a simple link. It limits the content to text
 * and images.
 * */
public class LinkPrimitive implements IHtmlPrimitive
{
  private String url;
  private Style style;
  private List producers = new ArrayList();

  /** Construct a LinkPrimitive instance with the specified URL. */
  public LinkPrimitive(String url)
  {
    this.url = url;
  }

  /** Set the style for this link. */
  public void setStyle(Style style)
  {
    this.style = style;
  }

  /** Add a TextPrimitive object to this link. */
  public void addText(TextPrimitive content)
  {
    producers.add(content);
  }

  /** Add some text to this link. */
  public void addText(String content)
  {
    producers.add(new TextPrimitive(content));
  }

  /** Add an ImagePrimitive object to this link. */
  public void addImage(ImagePrimitive content)
  {
    producers.add(content);
  }


  /** Build the content for this primitive and append it to
   *  the specified buffer.*/
  public void buildContent(StringBuffer buffer)
  {
    String href_string = Formatting.convertToAttribute("href", url);
    String style_string = Formatting.convertToAttribute("class", this.style);

    buffer.append("<a" +style_string+href_string+ ">");

    Iterator producers_iterator = producers.iterator();
    while (producers_iterator.hasNext())
    {
      IHtmlPrimitive content = (IHtmlPrimitive) producers_iterator.next();
      content.buildContent(buffer);
    }

    buffer.append("</a>");
  }

}