I have set my JEditorPane to use the text/html kit. If I try to setText("hey ") for example (note the space after 'hey'), the editor pane displays just "hey", there is no space after. Does somebody know how I can solve this?
Why are you worried about this?
If you want simple unformatted text to be displayed, then use a JTextArea or JTextPane.
A JEditorPane is used to "format" text so it will parse the data and may remove unwanted characters.
If you want to force a space when using HTML then you can use:
editor.setText("hello ");
Related
I'm using a JTextPane with content type of text/html, but whenever I copy a formatted text from MS Word and pastes it on the textpane it doesn't get formatted or displays properly.
Some of the tags are being displayed like boxes.
I wanted to attach an image but I couldn't cos my reputation isn't up to 10 yet.
Please help me with this.
Thanks.
It's a common mistake. You need to set :
((HTMLDocument)myJTextPane.getDocument()).setPreservesUnknownTags(false);
//considering that you already equipped yout JTextPane with an HTMLDocument.
//Note that HTMLEditorKit automatically installs one.
I believe that's enough to fix your issue.
I have a JTextArea which has its text set to a string of information. In this string of information I have a variable which I would like coloured red, to do this I edit the string as follows:
"Result: <html><font color=red>" + negativeValue + "</font></html>"
I would expect this to give Result: ## where the number is red. However it just puts the following into the text area:
Result: <html><font color=red>##</font></html>
I'm not really sure how to get this working, so could someone offer advice as to how to do so?
JTextArea is not a component designed for styled text. If the text can be all one color, call setForeground(Color).
Otherwise use a styled text component such as a JEditorPane or JTextPane. For more info. on using them, see How to Use Editor Panes and Text Panes.
Also as pointed out by others, the entire String must start with <html> .
You cannot use HTML in a JTextArea, but you can use it with a JEditorPane
JTextArea doesn't support styled text area, in order to render HTML you need an instance of JEditorPane or JTextPane. See the tutorial on Using Text Components
.
Sample code here
If memory serves, JTextArea is for plain text display only. For HTML, you must use JEditorPane or one of its subclasses.
Java renders html code only if it starts with <html>. You should try it like
"<html>Result: <font color=red>" + negativeValue + "</font></html>"
I'm trying and failing to understand how to use Java's text editor components to colorize text as you insert it. I don't want or need a fully featured syntax highlighting library.
Basically, I have a JTextField (or some other JText... component), and a list of words. I want any words in the field that appear in the list to be red, and the rest of the words be green. So for example, if "fire" is in the list, "fir" would appear green and "fire" would appear red.
I've tried using a JTextPane and a DefaultStyledDocument, using a KeyListener to go over the text in the document and using AbstractStyledDocument.replace to replace the existing words with versions that have the correct attributes. This didn't do anything. What am I doing wrong?
Neither JTextPane nor JTextField isn't able to present formatted text, i.e text having more than one format. For text-editor-like capabilities like you'd find in WordPad or HTML, the component to use is the JEditorPane or its descendant, JTextPane.
The simplest thing you can do is set the ContentType of the JEditorPane to "text/html" and simply set its text to a string containing HTML. The Java structured text components are surprisingly competent with HTML; you can display tables and/or DIVs, and there is support for much of CSS2. Simplest to do your styles inline, but you can even do external style hrefs.
If you want to get fancy programmatically, you can access the DocumentModel and create text from spans of text each having their own formatting. The DocumentModel works essentially like a programmable text editor.
EDIT: Re-reading your question, I see my answer doesn't quite address it. Since you want multi-colored text JEditorPane is your only option; but rather than just piping in pre-colored text via HTML or such, you'll have to put a listener on your document model to catch changes introduced when you type; and after every document change you'll want to examine the text (again from the Document model) for text that should or should not be highlighted, and you'll want to apply formatting to certain runs of text.
There are devils in the details, but this should get you started.
I am displaying text in a Java JEditorPane using HTML to fomrat the text. I am also designing a search function that finds text in the JEditorPane selects the text and then scrolls to it. My problem is creating an algorithim that will actually specify the beginning and ending position for the selection.
If I simply retrieve the text using myeditorpane.getText(), then find the search string in the result, the wrong selection start and end positions are calculated with the wrong text being selected (the tags are throwing the calculation off). I tried removing the html tags by executing a replace all function text.().replaceAll("\<.*?>","") before searching for the text (this replace all removes all text in between the tags) but still the wrong selection points are calculated (although I'm getting close :-)).
Does anyone have an easy way to do this?
Thanks,
Elliott
You probably want to be working with the underlying Document, rather than the raw text, as suggested in this HighlightExample.
You need to find the start location of the text. I guess something like:
int offset = editorPane().getDocument().getText().indexof(...);
Then to scroll you can use:
editorPane.scrollRectToVisible( editorPane.viewToModel(offset) );
Read up on Text and New Lines for more info.
I have a JTextArea which displays HTML of an Arabic web page. So it's essentially a mix of English and Arabic. In the JTextArea, with columns set to 30, certain text just disappears instead of wrapping properly. The weird thing is that if I copy the invisible text and paste it into Notepad, then I can see it in Notepad. If I change the number of columns to 40, everything displays fine. Any ideas?
See this screenshot of the problem:
Elie, thanks for the response. Not sure I explained the problem properly though. On the left in the screenshot is the JTextArea. On the right is the selection from the JTextArea pasted into Notepad. Does this make more sense now?
Is it the 30th character which is disappearing? It's possible due to the script that the JTextArea cannot render the Arabic characters properly. So it's counting the characters correctly, but doesn't realize that they take up more space. Support for such fonts is not great, so you may want to write a custom renderer for your JTextArea to deal with this (so you can manually take into account the proper amount of space required per character in Arabic and adjust the line wrap accordingly).