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The Open Source version of the IBM Toolbox for Java
///////////////////////////////////////////////////////////////////////////////
//
// JTOpen (IBM Toolbox for Java - OSS version)
//
// Filename: HTMLListItem.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.ExtendedIllegalArgumentException;
import java.beans.PropertyChangeSupport;
import java.beans.PropertyChangeListener;
import java.io.*;
/**
* The HTMLListItem class represents items within a HTMLList. The items within the list
* can either be ordered or unordered.
*
* HTMLListItem objects generate the following events:
*
* - PropertyChangeEvent
*
*
**/
abstract public class HTMLListItem extends HTMLTagAttributes implements java.io.Serializable // @Z1C
{
private static final String copyright = "Copyright (C) 1997-2001 International Business Machines Corporation and others.";
static final long serialVersionUID = -7139184882249518511L;
private HTMLTagElement listData_; // Data being added to the list item
private String lang_; // The primary language used to display the tags contents. //$B1A
private String dir_; // The direction of the text interpretation. //$B1A
boolean useFO_ = false; // Indicates if XSL-FO tags are outputted. //@D1A
private String type_; //The labeling scheme used to display the list item. //@D1A
/**
* Returns the type attribute.
* @return The type attribute.
**/
abstract String getTypeAttribute();
/**
* Returns the type attribute.
* @return The type attribute.
**/
abstract String getTypeAttributeFO(String itemType, int counter);
/**
* Deserializes and initializes transient data.
**/
private void readObject(java.io.ObjectInputStream in)
throws java.io.IOException, ClassNotFoundException
{
in.defaultReadObject();
//@CRS changes_ = new PropertyChangeSupport(this);
}
/**
* Returns the direction of the text interpretation.
* @return The direction of the text.
**/
public String getDirection() //$B1A
{
return dir_;
}
/**
* Returns the direction attribute tag.
* @return The direction tag.
**/
String getDirectionAttributeTag() //$B1A
{
if(useFO_) //@D1A
{ //@D1A
if((dir_!=null) && (dir_.length()>0)) //@D1A
{ //@D1A
if(dir_.equals(HTMLConstants.RTL)) //@D1A
return " writing-mode='rl'"; //@D1A
else //@D1A
return " writing-mode='lr'"; //@D1A
} //@D1A
else //@D1A
return ""; //@D1A
} //@D1A
else //@D1A
{ //@D1A
//@C1D
if ((dir_ != null) && (dir_.length() > 0))
{
StringBuffer buffer = new StringBuffer(" dir=\"");
buffer.append(dir_);
buffer.append("\"");
return buffer.toString();
}
else
return "";
} //@D1A
}
/**
* Returns the data in the HTMLListItem.
* @return The item data.
**/
public HTMLTagElement getItemData()
{
return listData_;
}
/**
* Returns the language of the input element.
* @return The language of the input element.
**/
public String getLanguage() //$B1A
{
return lang_;
}
/**
* Returns the language attribute tag.
* @return The language tag.
**/
String getLanguageAttributeTag() //$B1A
{
//@C1D
if ((lang_ != null) && (lang_.length() > 0))
{
StringBuffer buffer = new StringBuffer(" lang=\"");
buffer.append(lang_);
buffer.append("\"");
return buffer.toString();
}
else
return "";
}
/**
* Returns the tag for the HTML list item.
* @return The tag.
**/
public String getTag()
{
//@C1D
if(useFO_) //@D1A
return getFOTag(); //@D1A
StringBuffer s = new StringBuffer("");
s.append(listData_.getTag());
s.append("\n");
return s.toString();
}
/**
* Returns the tag for the XSL-FO list item.
* The language attribute is not supported in XSL-FO.
* @return The tag.
**/
public String getFOTag() //@D1A
{
//Save current state of useFO_
boolean useFO = useFO_;
//Indicate Formatting Object tags are outputted.
setUseFO(true);
StringBuffer s = new StringBuffer("");
s.append("");
s.append(listData_.getFOTag());
s.append("\n");
//Set useFO_ to previous state.
setUseFO(useFO);
return s.toString();
}
/**
* Returns if Formatting Object tags are outputted.
* The default value is false.
* @return true if the output generated is an XSL formatting object, false if the output generated is HTML.
**/
public boolean isUseFO() //@D1A
{
return useFO_;
}
/**
* Sets the direction of the text interpretation.
* @param dir The direction. One of the following constants
* defined in HTMLConstants: LTR or RTL.
*
* @see com.ibm.as400.util.html.HTMLConstants
*
**/
public void setDirection(String dir) //$B1A
{
if (dir == null)
throw new NullPointerException("dir");
// If direction is not one of the valid HTMLConstants, throw an exception.
if ( !(dir.equals(HTMLConstants.LTR)) && !(dir.equals(HTMLConstants.RTL)) )
throw new ExtendedIllegalArgumentException("dir", ExtendedIllegalArgumentException.PARAMETER_VALUE_NOT_VALID);
String old = dir_;
dir_ = dir;
if (changes_ != null) changes_.firePropertyChange("dir", old, dir ); //@CRS
}
/**
* Sets the item data in the HTMLListItem.
*
* @param data The item data.
*
**/
public void setItemData(HTMLTagElement data)
{
//@C1D
if (data == null)
throw new NullPointerException("data");
HTMLTagElement old = listData_;
listData_ = data;
if (changes_ != null) changes_.firePropertyChange("data", old, data ); //@CRS
}
/**
* Sets the language of the input tag.
* @param lang The language. Example language tags include:
* en and en-US.
*
**/
public void setLanguage(String lang) //$B1A
{
if (lang == null)
throw new NullPointerException("lang");
String old = lang_;
lang_ = lang;
if (changes_ != null) changes_.firePropertyChange("lang", old, lang ); //@CRS
}
/**
* Sets if Formatting Object tags should be used.
* The default value is false.
* @param useFO - true if output generated is an XSL formatting object, false if the output generated is HTML.
**/
public void setUseFO(boolean useFO) //@D1A
{
boolean old = useFO_;
useFO_ = useFO;
if (changes_ != null) changes_.firePropertyChange("useFO", old, useFO );
}
/**
* Returns a String representation for the HTMLList tag.
* @return The tag.
**/
public String toString()
{
return getTag();
}
}
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