Groovy Console load is broken.

Any news on this problem?

I think it's quite sad that this otherwise great feature of groovy is currently crippled.

No progress. It's a combination of not understanding why it's breaking (since this was donated code) combined with a lack of free time to devote to it. The solution may be to punt and switch to JSyntaxPane.

It's a problem with the DocumentFilter of some sort...

If inside groovy.ui.Console, you change loadScriptFile to:

    void loadScriptFile(File file) {
        swing.edt {
            inputArea.editable = false
        }
        swing.doOutside {
            try {
                consoleText = file.readLines().join('\n')
                scriptFile = file
                swing.edt {
                    updateTitle()

                    // Turn off DocumentFilter
                    def doc = inputArea.document
                    def filter = doc.documentFilter
                    doc.documentFilter = null
                    // END

                    inputArea.setText( consoleText )

                    // Then turn it back on again
                    doc.documentFilter = filter
                    // END

                    setDirty(false)
                    inputArea.caretPosition = 0
                }
            } finally {
                swing.edt { inputArea.editable = true }
            }
        }
    }

It loads the document properly, but doesn't style it again until you type in some more text (and this is just trying to cure the symptoms, rather treating the underlying illness)

I'll have a look into StructuredSyntaxDocumentFilter and see if I can see anything...but it all gets a bit frantic

I think I found it...

When groovy.ui.Console:loadScriptFile called

inputArea.text = consoleText

the text was being passed to the groovy.ui.text.StructuredSyntaxDocumentFilter in 4096 char "chunks" rather than all at once

This meant that the code around the boundaries was garbled, and so the RegExp wonder that is LexerNode was having a bit of choking fit whilst trying to style up the document (hence chunks of code were getting left behind, and put out of order)

The stuff at the bottom of the file (I think) was the tails of the chunks that it couldn't handle

I have submitted a patch to this issue which passes the text straight to the Document rather than via the JTextArea.text method, and this seems to get round the problem

Again, hope it's ok

Tim

Thank you! Sorry it took so long to fix it

Yay! anyway

I just checked this and it's still broken in 1.7-rc-2.

I use:
console.setScriptFile(messageViewGroovyFile);
JTextPane inputArea = console.getInputArea();
inputArea.setText(text);

I read text manually already.

Am I using Console wrongly?

Is this bug now with embedding the console in your own application?

Not just using the command line to fire up the console?

It's embedded in an application.

You can take a look at the actual code at
http://github.com/huxi/lilith/blob/master/lilith/src/main/java/de/huxhorn/lilith/swing/preferences/PreferencesDialog.java

The relevant part is contained in the method editDetailsFormatter().

What happens if instead of:

inputArea.setText(text);
console.setDirty(false);

You do

inputArea.getDocument().remove( 0, inputArea.document.length )
inputArea.getDocument().insertString( 0, text, null )

The same as I do in the patch I supplied here:
http://jira.codehaus.org/browse/GROOVY-2790?focusedCommentId=187785&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#action_187785

(see Console.patch at the top of this issue)

Does that fix it?

Yes, the following code works:

JTextPane inputArea = console.getInputArea();
//inputArea.setText(text);
Document doc = inputArea.getDocument();
try
{
	doc.remove( 0, doc.getLength() );
	doc.insertString( 0, text, null );
}
catch(BadLocationException e)
{
	if(logger.isWarnEnabled()) logger.warn("Exception while setting source!", e);
}
console.setDirty(false);
inputArea.setCaretPosition(0);
inputArea.requestFocusInWindow();

Thanks for the tip!

The question is: is this bug fixed?
There should probably be at least some method that does the above. I also don't really understand what's happening here, i.e. exactly why setText is failing like this.

The syntax highlighter is kicked off by Document events

When you call setText, Swing seems to buffer the text you're adding, and it goes into the Document in chunks

The problem is that the syntax highlighter (which is a huge Rube Goldberg regexp parser of genius) startes parsing the text before all of the chunks have been added

If one of these chunks splits in the middle of a loop or a string, then the highlighter chokes and you end up with the remaining code left in the highlighter's buffer

All of this remainging code is then spat out into the end of the document

So by skipping setText, and going straight for the document.insertString method, we make sure that the all the Groovy code is there at the same time when the event to highlight it fires

This is the cleanest solution I could find when I looked through the code back in the summer