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The Open Source version of the IBM Toolbox for Java
///////////////////////////////////////////////////////////////////////////////
//
// JTOpen (IBM Toolbox for Java - OSS version)
//
// Filename: UnorderedList.java
//
// The source code contained herein is licensed under the IBM Public License
// Version 1.0, which has been approved by the Open Source Initiative.
// Copyright (C) 1997-2001 International Business Machines Corporation and
// others. All rights reserved.
//
///////////////////////////////////////////////////////////////////////////////
package com.ibm.as400.util.html;
import com.ibm.as400.access.Trace;
import com.ibm.as400.access.ExtendedIllegalStateException;
import com.ibm.as400.access.ExtendedIllegalArgumentException;
import java.beans.PropertyChangeSupport;
/**
* The UnorderedList class represents an HTML unordered list, <ul>.
*
* This example creates a UnorderedList tag:
*
* // Create an UnorderedList.
* UnorderedList list = new UnorderedList();
*
* // Use circles when displaying the list items.
* list.setType(HTMLConstants.CIRCLE);
*
* // Create an UnorderedListItem.
* UnorderedListItem listItem = new UnorderedListItem();
*
* // Set the data in the list item.
* listItem.setItemData(new HTMLText("my list item"));
*
* // Add the list item to the UnorderedList.
* list.addListItem(listItem);
* System.out.println(list.toString());
*
*
* Here is the output of the UnorderedList tag:
*
* <ul type="circle">
* <li>my list item</li>
* </ul>
*
* Here is the output of the UnorderedList tag using XSL-Formatting Objects:
*
* <fo:block-container>
* <fo:list-block>
* <fo:list-item>
* <fo:list-item-label>Ê</fo:list-item-label>
* <fo:list-item-body><fo:block-container><fo:block>my list item</fo:block>
* </fo:block-container>
* </fo:list-item-body>
* </fo:list-item>
* </fo:list-block>
* </fo:block-container>
*
*
* UnorderedList objects generate the following events:
*
* - PropertyChangeEvent
*
**/
public class UnorderedList extends HTMLList
{
private static final String copyright = "Copyright (C) 1997-2001 International Business Machines Corporation and others.";
static final long serialVersionUID = -8234261579413831795L;
private String type_; //The labeling scheme used to display the list .
/**
* Constructs a default UnorderedList object.
**/
public UnorderedList()
{
super();
}
/**
* Constructs a UnorderedList object with the specified labeling type.
* @param type The labeling scheme used to display the list. One of the following
* constants defined in HTMLConstants: DISC, SQUARE, or CIRCLE.
**/
public UnorderedList(String type)
{
super();
setType(type);
}
/**
* Returns the attribute tag.
* @return The tag.
**/
private String getTypeAttributeTag()
{
//@C1D
StringBuffer s = new StringBuffer("");
if (type_ != null)
{
if (type_.equals(HTMLConstants.DISC))
s.append(" type=\"disc\"");
else if (type_.equals(HTMLConstants.SQUARE))
s.append(" type=\"square\"");
else if (type_.equals(HTMLConstants.CIRCLE))
s.append(" type=\"circle\"");
return s.toString();
}
else
return "";
}
/**
* Returns the type of the labeling scheme.
* @return The type.
**/
public String getType()
{
return type_;
}
/**
* Returns the tag for the unordered list.
* @return The tag.
**/
public String getTag()
{
//@C1D
if(isUseFO()) //@D1A
return getFOTag(); //@D1A
if (getItems().isEmpty())
{
Trace.log(Trace.ERROR, "Attempting to get tag before setting items in list.");
throw new ExtendedIllegalStateException(
"items", ExtendedIllegalStateException.PROPERTY_NOT_SET );
}
StringBuffer s = new StringBuffer("\n");
s.append(getItemAttributeTag());
s.append("
\n");
return s.toString();
}
/**
* Returns the XSL-FO tag for the unordered list.
* @return The tag.
**/
public String getFOTag() //@D1A
{
//Save current state of useFO_
boolean useFO = isUseFO();
setUseFO(true);
if (getItems().isEmpty())
{
Trace.log(Trace.ERROR, "Attempting to get XSL-FO tag before setting items in list.");
throw new ExtendedIllegalStateException(
"items", ExtendedIllegalStateException.PROPERTY_NOT_SET );
}
if(type_ == null)
type_ = HTMLConstants.DISC;
StringBuffer s = new StringBuffer("\n");
s.append("\n");
s.append(getItemAttributeFOTag(type_));
s.append("\n");
s.append("\n");
//Set useFO_ to previous state
setUseFO(useFO);
return s.toString();
}
/**
* Deserializes and initializes transient data.
**/
private void readObject(java.io.ObjectInputStream in)
throws java.io.IOException, ClassNotFoundException
{
in.defaultReadObject();
//@CRS changes_ = new PropertyChangeSupport(this);
}
/**
* Sets the labeling scheme to be used. The default scheme is disc.
*
* @param type The labeling scheme. One of the following constants
* defined in HTMLConstants: DISC, SQUARE, or CIRCLE.
*
* @see com.ibm.as400.util.html.HTMLConstants
**/
public void setType(String type)
{
if (type == null)
throw new NullPointerException("type");
// If type is not one of the valid HTMLConstants, throw an exception.
if ( !(type.equals(HTMLConstants.DISC)) && !(type.equals(HTMLConstants.CIRCLE)) && !(type.equals(HTMLConstants.SQUARE)) )
{
throw new ExtendedIllegalArgumentException("type", ExtendedIllegalArgumentException.PARAMETER_VALUE_NOT_VALID);
}
//@CRS if (Trace.isTraceOn())
//@CRS Trace.log(Trace.INFORMATION, " Setting labeling type for .");
String old = type_;
type_ = type;
if (changes_ != null) changes_.firePropertyChange("type", old, type ); //@CRS
}
}