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///////////////////////////////////////////////////////////////////////////////
//
// JTOpen (IBM Toolbox for Java - OSS version)
//
// Filename: HTMLDocument.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) 1997-2003 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.util.Vector;
import java.beans.PropertyChangeSupport;
import java.beans.PropertyChangeListener;
import java.lang.*;
/**
* The HTMLDocument class represents an HTML or an XSL-FO document. The document
* contains all information needed to display an HTML or an XSL-FO page.
*
*
*
* The following java program creates an HTMLDocument:
*
*
* package com.ibm.as400.util.html;
* import java.*;
* import java.io.*;
* import java.lang.*;
* import java.beans.PropertyVetoException;
*
* public class FoFile
* {
* public static void main (String[] args)
* {
* //Create the HTMLDocument that holds necessary document properties
* HTMLDocument fo = new HTMLDocument();
*
* //Set page and margin properties. Numbers are in inches.
* fo.setPageWidth(8.5);
* fo.setPageHeight(11);
* fo.setMarginTop(1);
* fo.setMarginBottom(1);
* fo.setMarginLeft(1);
* fo.setMarginRight(1);
*
* //Create a header for the page.
* HTMLHead head = new HTMLHead();
* //Set the title for the header
* head.setTitle("This is the page header.");
*
* //Create several headings
* HTMLHeading h1 = new HTMLHeading(1, "Heading 1");
* HTMLHeading h2 = new HTMLHeading(2, "Heading 2");
* HTMLHeading h3 = new HTMLHeading(3, "Heading 3");
* HTMLHeading h4 = new HTMLHeading(4, "Heading 4");
* HTMLHeading h5 = new HTMLHeading(5, "Heading 5");
* HTMLHeading h6 = new HTMLHeading(6, "Heading 6");
*
* //Create some text that is printed from right to left.
* //Create BidiOrdering object and set the direction
* BidiOrdering bdo = new BidiOrdering();
* bdo.setDirection(HTMLConstants.RTL);
*
* //Create some text
* HTMLText text = New HTMLText("This is Arabic text.");
* //Add the text to the bidi-ordering object and get XSL-FO tag
* bdo.addItem(text);
*
* //Add the HTMLHead
* fo.setHTMLHead(head);
*
* //Add the items to the document
* fo.addElement(h1);
* fo.addElement(h2);
* fo.addElement(h3);
* fo.addElement(h4);
* fo.addElement(h5);
* fo.addElement(h6);
* fo.addElement(bdo);
*
* //Print the Formatting Object tag.
* System.out.println(fo.getFOTag());
*
* //Print the HTML Object tag.
* System.out.println(fo.getTag());
* }
* }
*
*
* Here is the output generated by the above program:
*
*
* <fo:root xmlns:fo = 'http://www.w3.org/1999/XSL/Format'>
* <fo:layout-master-set>
* <fo:simple-page-master master-name='body-page' writing-mode='lr-tb' page-width='8.5in' page-height='11.0in' margin-top='1.0in' margin-bottom='1.0in' margin-left='1.0in' margin-right='1.0in'>
* <fo:region-body region-name='xsl-region-body'/>
* <fo:region-before region-name='xsl-region-before' precedence='true' extent='1.0in'/>
* <fo:region-after region-name='xsl-region-after' precedence='true' extent='1.0in'/>
* <fo:region-start region-name='xsl-region-start' extent='1.0in'/>
* <fo:region-end region-name='xsl-region-end' extent='1.0in'/>
* </fo:simple-page-master>
* </fo:layout-master-set>
* <fo:page-sequence master-name='body-page'>
* <fo:flow flow-name='xsl-region-body'>
*
* <fo:block-container writing-mode='lr'>
* <fo:block font-size='25pt'>Heading 1</fo:block>
* </fo:block-container>
*
* <fo:block-container writing-mode='lr'>
* <fo:block font-size='20pt'>Heading 2</fo:block>
* </fo:block-container>
*
* <fo:block-container writing-mode='lr'>
* <fo:block font-size='15pt'>Heading 3</fo:block>
* </fo:block-container>
*
* <fo:block-container writing-mode='lr'>
* <fo:block font-size='13pt'>Heading 4</fo:block>
* </fo:block-container>
*
* <fo:block-container writing-mode='lr'>
* <fo:block font-size='11pt'>Heading 5</fo:block>
* </fo:block-container>
*
* <fo:block-container writing-mode='lr'>
* <fo:block font-size='9pt'>Heading 6</fo:block>
* </fo:block-container>
*
* <fo:block-container writing-mode='rl'>
* <fo:block>This is Arabic text.</fo:block>
* </fo:block-container>
*
* </fo:flow>
* <fo:static-content flow-name='xsl-region-before'>
* <fo:block-container>
* This is the page header.</fo:block-container>
* </fo:static-content>
* </fo:page-sequence>
* </fo:root>
*
*
* <html>
* <head>
* <title>This is the page header.</title>
* </head>
* <body>
* <h1>Heading 1</h1>
* <h2>Heading 2</h2>
* <h3>Heading 3</h3>
* <h4>Heading 4</h4>
* <h5>Heading 5</h5>
* <h6>Heading 6</h6>
*
* <bdo dir="rtl">
* This is Arabic text.
* </bdo>
*
* </body>
* </html>
*
**/
public class HTMLDocument extends HTMLTagAttributes implements java.io.Serializable
{
private static final String copyright = "Copyright (C) 1997-2003 International Business Machines Corporation and others.";
static final long serialVersionUID = 1662839037165473585L;
private Vector tag_ = new Vector(); //Vector to hold any tags added to the main body of the document container
private HTMLHead head_=null; //HTMLHead element to hold the page header.
private double height_ = 11.0; //The height of the fo page.
private double width_ = 8.5; //The width of the fo page.
private double margin_top_=0.5; //The top margin for the page.
private double margin_bottom_=0.5; //The bottom margin for the page.
private double margin_left_=0.5; //The left margin for the page.
private double margin_right_=0.5; //The right margin for the page.
private boolean useFO_ = false; //Specifies if formatting object tags are used.
transient private Vector tagListeners_; // The list of tag listeners. @CRS
/**
* Constructs a default HTMLDocument object.
**/
public HTMLDocument()
{
super();
}
/**
* Constructs an HTMLDocument object with the specified HTMLHead.
* @param head An HTMLHead object.
**/
public HTMLDocument(HTMLHead head)
{
super();
setHTMLHead(head);
}
/**
* Adds a tag to the main body of the document.
* @param tag An HTMLTagElement object.
**/
public void addElement(HTMLTagElement tag)
{
if (tag == null)
throw new NullPointerException("tag");
tag_.addElement(tag);
fireAdded(); // Fire the element added event.
}
/**
* Adds the <head> HTML tag or the page header for an XSL-FO page.
* @param head An HTMLHead object.
**/
public void setHTMLHead(HTMLHead head)
{
if(head == null)
throw new NullPointerException("head");
head_ = head;
fireAdded();
}
/**
* Returns an HTMLHead object for the page.
* @return The HTMLHead object.
**/
public HTMLHead getHTMLHead()
{
return head_;
}
/**
* Adds an array of tags to the document.
* @param tag An HTMLTagElement array.
**/
public void addElement(HTMLTagElement[] tag)
{
if (tag == null)
throw new NullPointerException("tag");
else
{
for(int i=0; i\n");
//Add the page header
if (head_ != null)
{
s.append(getHTMLHead().getFOTag());
}
s.append(getEndRootTag());
//Set useFO_ to previous state.
setUseFO(useFO);
return new String(s);
}
/**
* Returns the tag for the HTML document.
* @return The tag.
**/
public String getTag()
{
if(useFO_)
return getFOTag();
//Indicate that HTML tags are outputted.
setUseFO(false);
StringBuffer s = new StringBuffer("\n");
//Add the tag
if (head_ != null)
{
s.append(getHTMLHead().getTag());
}
StringBuffer body = new StringBuffer("\n");
// Add any tags.
HTMLTagElement tag;
int size = tag_.size();
for (int i=0; i< size; i++)
{
tag = (HTMLTagElement)tag_.elementAt(i);
body.append(tag.getTag().toString());
body.append("\n");
}
//Add the tag and its contents
s.append(body.toString());
s.append("\n");
s.append("\n");
return new String(s);
}
/**
* 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()
{
return useFO_;
}
/**
* Returns the beginning tags for the XSL-FO document.
* @return The tag.
**/
private String getStartRootTag()
{
StringBuffer tag = new StringBuffer("\n");
tag.append("\n");
tag.append("\n");
tag.append("\n");
tag.append("\n");
tag.append("\n");
tag.append("\n");
tag.append("\n");
tag.append("\n");
tag.append("\n");
tag.append("\n");
tag.append("\n");
return tag.toString();
}
/**
* Returns the ending tags for the XSL-FO document.
* @return The tag.
**/
private String getEndRootTag()
{
StringBuffer tag = new StringBuffer("\n");
tag.append("");
return tag.toString();
}
/**
* Returns a String representation for the Document tag.
* @return The tag.
**/
public String toString()
{
return getTag();
}
/**
* Fires a ELEMENT_ADDED event.
**/
private void fireAdded()
{
if (tagListeners_ == null) return;
Vector targets = (Vector) tagListeners_.clone();
ElementEvent event = new ElementEvent(this, ElementEvent.ELEMENT_ADDED);
for (int i=0; ipage-height of the XSL-FO page in inches.
* The default value is 11 inches.
* @param height The height.
**/
public void setPageHeight( double height )
{
if (height < 0 )
throw new ExtendedIllegalArgumentException("height", ExtendedIllegalArgumentException.RANGE_NOT_VALID);
double old = height_;
height_ = height;
if (changes_ != null) changes_.firePropertyChange("height", new Double(old), new Double(height) );
}
/**
* Sets the page-width of the XSL-FO page in inches.
* The default value is 8.5 inches.
* @param width The width
**/
public void setPageWidth( double width )
{
if (width < 0 )
throw new ExtendedIllegalArgumentException("width", ExtendedIllegalArgumentException.RANGE_NOT_VALID);
double old = width_;
width_ = width;
if (changes_ != null) changes_.firePropertyChange("width", new Double(old), new Double(width) );
}
/**
* Sets the top-margin of the XSL-FO page in inches.
* The default value is 0.5 inches.
* @param top The width of the top margin
**/
public void setMarginTop( double top )
{
if (top < 0 )
throw new ExtendedIllegalArgumentException("top", ExtendedIllegalArgumentException.RANGE_NOT_VALID);
double old = margin_top_;
margin_top_ = top;
if (changes_ != null) changes_.firePropertyChange("top", new Double(old), new Double(top) );
}
/**
* Sets the bottom-margin of the XSL-FO page in inches.
* The default value is 0.5 inches.
* @param bottom The width of the bottom margin
**/
public void setMarginBottom( double bottom )
{
if (bottom < 0 )
throw new ExtendedIllegalArgumentException("bottom", ExtendedIllegalArgumentException.RANGE_NOT_VALID);
double old = margin_bottom_;
margin_bottom_ = bottom;
if (changes_ != null) changes_.firePropertyChange("bottom", new Double(old), new Double(bottom) );
}
/**
* Sets the right-margin of the XSL-FO page in inches.
* The default value is 0.5 inches.
* @param right The width of the right margin
**/
public void setMarginRight( double right )
{
if (right < 0 )
throw new ExtendedIllegalArgumentException("right", ExtendedIllegalArgumentException.RANGE_NOT_VALID);
double old = margin_right_;
margin_right_ = right;
if (changes_ != null) changes_.firePropertyChange("right", new Double(old), new Double(right) );
}
/**
* Sets the left-margin of the XSL-FO page in inches.
* The default value is 0.5 inches.
* @param left The width of the left margin
**/
public void setMarginLeft( double left )
{
if (left < 0 )
throw new ExtendedIllegalArgumentException("left", ExtendedIllegalArgumentException.RANGE_NOT_VALID);
double old = margin_left_;
margin_left_ = left;
if (changes_ != null) changes_.firePropertyChange("left", new Double(old), new Double(left) );
}
/**
* Removes an HTMLTagElement from the document.
* @param tag The HTMLTagElement.
**/
public void removeElement(HTMLTagElement tag)
{
if (tag == null)
throw new NullPointerException("tag");
//verify the document is not empty
// Verify the table is not empty.
if (tag_.size() == 0)
{
Trace.log(Trace.ERROR, "Attempting to remove an element when the document is empty.");
throw new ExtendedIllegalStateException("tag", ExtendedIllegalStateException.PROPERTY_NOT_SET);
}
if (tag_.removeElement(tag))
fireRemoved();
}
/**
* Returns the height of the page in inches.
* @return The height.
**/
public double getPageHeight()
{
return height_;
}
/**
* Returns the width of the page in inches.
* @return The width.
**/
public double getPageWidth()
{
return width_;
}
/**
* Returns the top margin of the page in inches.
* @return The top margin.
**/
public double getMarginTop()
{
return margin_top_;
}
/**
* Returns the bottom margin of the page in inches.
* @return The bottom margin.
**/
public double getMarginBottom()
{
return margin_bottom_;
}
/**
* Returns the left margin of the page in inches.
* @return The left margin.
**/
public double getMarginLeft()
{
return margin_left_;
}
/**
* Returns the right margin of the page in inches.
* @return The right margin.
**/
public double getMarginRight()
{
return margin_right_;
}
/**
* 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)
{
boolean old = useFO_;
useFO_ = useFO;
if (changes_ != null) changes_.firePropertyChange("useFO", old, useFO );
}
}
