Remove an html attribute in a html document

Hi...
Can someone give me a piece of code describing how I can remove a html attribute for the text under the current caret position or selection?
If I have a <font class="..."> tag, I want to delete the class attribute, but maybe still want to have the font tag because it can contain some other attributes, face, size etc.
I can get the current attribute with the AttributeSet attr = getCharacterElement().getAttributes().
To be able to delete an attribute in the AttributeSet, I have to put it in a SimpleAttributeSet object?
If I do that and delete the class attribute with the removeAttribute method and then put the changed AttributeSet back with setCharacterAttributes and setting the replace parameter to true, the selected text is removed...
Any solutions?

I don't know exact answer. It's only my suggestions!
Foreground color in HTMLDocument differ from DefaultStyledDocument
in the HTMLDocument color is specified with appropriate TAGs (like <FONT>).
when you change source html text the document tree structure is changed according to html content and your settings are disappeared.
Try to change source html text.
Could you tell me what do you want to achieve?
may be i can suggest a solution...
i tryed to create an example... but it's unstable.
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.text.*;
import javax.swing.text.html.*;
import javax.swing.event.*;
import javax.swing.tree.*;
import java.util.*;
class Test extends JFrame {
JEditorPane edit;
public Test(){
super("Test");
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
getContentPane().setLayout(new BorderLayout());
edit = new JEditorPane();
edit.setEditorKit(new HTMLEditorKit());
//edit.setDocument(new MyHTMLDocument());
edit.setEditable(true);
edit.setText("<HTML><FONT CLASS='c1' COLOR=RED><B>red text</B></FONT></HTML>");
JScrollPane scroll=new JScrollPane(edit);
getContentPane().add(scroll,BorderLayout.CENTER);
JTree tree=new JTree((TreeNode)edit.getDocument().getDefaultRootElement());
getContentPane().add(tree,BorderLayout.WEST);
JButton btn=new JButton("test");
ActionListener lst=new ActionListener() {
public void actionPerformed(ActionEvent e){
HTMLDocument html_doc=(HTMLDocument)edit.getDocument();
Element el=html_doc.getCharacterElement(1);
MutableAttributeSet newAttr=new SimpleAttributeSet();
StyleConstants.setForeground(newAttr,Color.blue);
html_doc.setCharacterAttributes(1,3,newAttr,false);
try {
html_doc.insertString(0,"",null); //this call do nothing but notifies that document is changed
catch (Exception ex) {
ex.printStackTrace();
Element font=el.getParentElement();
MutableAttributeSet attr=(MutableAttributeSet)el.getAttributes();
btn.addActionListener(lst);
getContentPane().add(btn,BorderLayout.SOUTH);
setSize(300,300);
setVisible(true);
public static void main(String a[]) {
new Test();
and don't worry about dukes:-))
i just want to help you.
best regards
Stas

Similar Messages

CR Reports 2008: Space Between HTML Attribute and Value Causes Attribute To Be Ignored

I have a field in a report with its Text interpretation set to "HTML Text". When content is rendered in that field that was sourced from a Microsoft Word document, some of the attributes seem to be ignored by Crystal.
For example, I have observed with "style" attributes that if there is a space between the attribute and the value, e.g. "FONT-FAMILY: SimSun" then Crystal will not render the Asian characters, replacing them with squares. However, if I manually remove the space so that the attribute appears as "FONT-FAMILY:SimSun", then the characters properly render as expected. I have observed the same issue with at least one other attribute as well, "FONT-SIZE".
This html does render properly in various browsers, so it seems to be an issue with Crystal Reports. Can you provide me with information about this and if there is a fix for it in subsequent versions. The version I tested with is 2008 - 12.5.0.1190.
Thanks for any assistance that you can provide.

hi Ethan,
here are the list of supported html tags in text interpretation...font family is indeed a supported tag.
does the html appear properly in the designer?...you mentioned various browsers and am wondering if you mean the crystal web viewers?
if the issue is in your cr designer, you may wish to patch it to the latest level.
also, ensure that you do not have any unsupported tags in your html that may be causing an issue.
-jamie
html
body
div (causes a paragraph break)
tr (causes only a paragraph break; does not preserve column structure of a table)
span
font
p (causes a paragraph break)
br (causes a paragraph break)
h1 (causes a paragraph break, makes the font bold & twice default size)
h2 (causes a paragraph break, makes the font bold & 1.5 times default size)
h3 (causes a paragraph break, makes the font bold & 9/8 default size)
h4 (causes a paragraph break, makes the font bold)
h5 (causes a paragraph break, makes the font bold & 5/6 default size)
h6 (causes a paragraph break, makes the font bold & 5/8 default size)
center
big (increases font size by 2 points)
small (decreases font size by 2 points if it's 8 points or larger)
b
i
s
strike
u
The supported HTML attributes are:
align
face
size
color
style
font-family
font-size
font-style
font-weight
In Crystal Reports 2008 Service Pack 2 and above, the following additional HTML tags and attributes have been added to the supported list:
The supported HTML tags are:
ul ( bulleted list )
ol ( ordered list )
li ( tag defining a list item used for both list type: ul and ol. )
Important Note: The bullet will not show up as a regular size bullet, but as a small dot.
The supported HTML attributes are:
strong ( bold )

Changing HTML attributes

Hi,
My application can display HTML pages in a JTextPane. It can highlight parts of the text to make them stand out. But this is a problem when the HTML document has the same color that is used for highlighting the text. It makes the text look invisible!
So I would like to be able to change the background color to white, no matter what is in the original HTML document. (Later, I will also be wanting to change the font color to black, and maybe remove/change some other attributes, but one thing at a time!)
A StyledDocument is created with this code: EditorKit ek = new HTMLEditorKit();
StyledDocument myDoc = (StyledDocument)ek.createDefaultDocument(); The HTML from the file is then read into myDoc with the "Read" method of the EditorKit. This StyledDocument will be used in another class which displays it on the JTextPane. But I want to change it BEFORE it goes on the JTextPane.
Because the JTextPane accesses myDoc, I made a temporary StyledDocument called tempDoc to read the HTML into, then **hopefully** make my changes to, so that the very last line can be myDoc = tempDoc to make sure that myDoc only gets the very final changes.
I use a Javax.Swing.Text.ElementIterator over the StyledDocument to get all of the elements and see if it's the body element using the Element.getName() method. This part works, because I have lots of println's in to see what is happening.
I then use a SimpleAttributeSet and construct it using (bodyElement.getAttributes()). Then I tell it this: SimpleAttributeSet sas = new SimpleAttributeSet(bodyElement.getAttributes());
sas.removeAttribute(sas.getAttribute(HTML.Attribute.BGCOLOR));
sas.addAttribute(HTML.Attribute.BGCOLOR, "white");
tempDoc.setCharacterAttributes(0, tempDoc.getLength(), sas, true); For the last line in particular, I feel like I've tried everytthing! Many different combinations.
What I notice happening is that often the HTML document in the JTextPane displays the original document. Or else, all of the Elements, including content, are replaced with the <body bgcolor=white"> tag. (I make the EditorKit write out the resulting HTML file to see what's going on!). In the JTextPane, the original bgcolor remains, even if the content disappears. In the Browser, the bgcolor is the right color (with the content still missing.)
Please do not tell me to edit the HTML files themselves as they are the client's, and it's a nicer solution for the program to handle them rather than tell the people to manually edit all of the files. Plus, the files are machine-generated, so there might not be anyone who even knows HTML!
I have also tried using StyleConstants to change the colors, but this only changes the colors right behind the text. So the bgcolor is still displayed, but it looks like someone has run a white highlighter over the text. Quite ugly!
I hope I have explained this well. The code is quite complicated (and messed up right now because I have been playing with it all day) so I haven't posted it. If you have any questions to clarify it, please ask!
Thanks in advance to anyone who takes a look and attempts to help. (There are Dukes cuz everyone seems to like them, even though I don't really know what they do. A ranking system?)

Ok, I deleted all of my changes and started again. This time, I set the Paragraph attributes instead of Character Attributes (I read the API properly and it said that set Character Attributes changes all of the content element attributes). That would explain why all of the text disappeared, lol! It doesn't explain why the original document was still being displayed in the JTextPane, but when I set Paragraph attributes, the document with the correct color background appears.
There are still a couple of funny things happening. Cuz I'm lazy I'll post the resulting and original HTML files here:
ORIGINAL:
<html>
<head>
<title>A Test Document</title>
</head>
<body bgcolor=red>
A red document
<p>
New paragraph
</body>
</html>
RESULTING:
<html>
<head>
<body bgcolor="white">
<title>A Test Document </title>
</body>
</head>
<body bgcolor="red">
<body bgcolor="white">
A red document
</body>
<body bgcolor="white">
New paragraph
</body>
</body>
</html>
It would be nice if only the <body bgcolor=red> tag would be replaced with <body bgcolor="white"> instead of getting inserted everywhere (even in the HEAD tag). I tried setting the Paragraph attributes to bodyElement.getStartOffset and getEndOffset() but it didn't work either.

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I am parsing HTML code and need some help. Maybe it's because
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<TD ALIGN="left" COLSPAN="2">
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I was able to make this work.
What I did was the following:
<code>
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</code>
I need to use the start and end position of the element to get
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Keep-On-Learnin' :-)
This message was processed and edited by Jive.
It shall not be considered an accurate representation of my words.
It might not even have been intended as a reply to your message.

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Edited by: DJT on Mar 3, 2008 4:28 AM
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I found this ....
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%>

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How have you been? Wishing you a belated Happy New Year!
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Remove an html attribute in a html document

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