selectionprimitive.java

来自「考勤管理系统源码」· Java 代码 · 共 49 行

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

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

/**
 * The SelectionPrimitive class encapsulates the details of
 * building the HTML for a pulldown selector widget.
 *
 */
public class SelectionPrimitive implements IHtmlPrimitive
{
  private String name;
  private Style style;

  private StringBuffer optionsBuffer = new StringBuffer();

  /** Construct a SelectionPrimitive with the specified name
   *  of the form input element. */
  public SelectionPrimitive(String name)
  {
    this.name = name;
  }

  /** Specify the style class that is applied to the selection. */
  public void setStyle(Style style)
  {
    this.style = style;
  }

  /** Add a value to the selector. */
  public void addValue(String displayValue, String dataValue, boolean selected)
  {
    String class_string = Formatting.convertToAttribute("class", style);
    String data_value_string = Formatting.convertToAttribute("value", dataValue);
    String selected_string = Formatting.convertToAttribute("selected", selected);
    optionsBuffer.append("<option" +data_value_string+selected_string+class_string+ ">" +displayValue+ "</option>\n");
  }

  /** Build the content for this primitive and append it to
   *  the specified buffer.*/
  public void buildContent(StringBuffer buffer)
  {
    String name_string = Formatting.convertToAttribute("name", this.name);
    buffer.append("<select" +name_string+ ">\n");
    buffer.append(this.optionsBuffer.toString());
    buffer.append("</select>");
  }
}