Disabling word wrap for JTextPane

After a grueling 3 days of looking at swing code, I've finally found the solution!!!
check the following code out. No need to set the bounds to any specific size, will work for any line length, well, reasonablly long. No problems with tabs or newlines either. The only thing I can't think of solving is the caret not being visible when editing the right most part of the text area. Any suggestions?



//NoWrapTextPane.java

import java.awt.Dimension;

import javax.swing.JTextPane;
import javax.swing.text.EditorKit;

public class NoWrapTextPane extends JTextPane {
public boolean getScrollableTracksViewportWidth() {
//should not allow text to be wrapped
return false;
}

public void setSize(Dimension d) {
//dont let the Textpane get sized smaller than its parent
Dimension pSize = getParent().getSize();
if (d.width < pSize.width) {
super.setSize(pSize.width, d.height);
} else {
super.setSize(d);
}
}

protected EditorKit createDefaultEditorKit() {
return new MyEditorKit();
}

}


//MyEditorKit.java

import javax.swing.text.*;

public class MyEditorKit extends StyledEditorKit {
private static final ViewFactory defaultFactory = new MyViewFactory();
public ViewFactory getViewFactory() {
return defaultFactory;
}


public static class MyViewFactory implements ViewFactory {
public View create(Element elem) {
String kind = elem.getName();
if (kind != null) {
if (kind.equals(AbstractDocument.ContentElementName)) {
return new MyView(elem);
} else if (kind.equals(AbstractDocument.ParagraphElementName)) {
return new ParagraphView(elem);
} else if (kind.equals(AbstractDocument.SectionElementName)) {
return new BoxView(elem, View.Y_AXIS);
} else if (kind.equals(StyleConstants.ComponentElementName)) {
return new ComponentView(elem);
} else if (kind.equals(StyleConstants.IconElementName)) {
return new IconView(elem);
}
}

// default to text display
return new MyView(elem);
}
}


public static class MyView extends LabelView {
public MyView(Element e) {
super(e);
}

public float getTabbedSpan(float x, TabExpander e) {
float result = super.getTabbedSpan(x, e);
this.preferenceChanged(this, true, false);
return result;
}

}
}

To battbot.
That's really bad to call preferenceChanged in the getting tabbed span.
That means every time when you measure your label you relayout all content. I think the component will be really slow.

regards,
Stas

Oh btw Stas, in which cases are the tab expansion based on the x position? Will setting the x position to 0 rather than it's true position cause any unwanted side-effects?

Frank

It's better init tab expander and use super method.

Like this.

As for cursor If you scroll slightly to the right the caret becomes visible. At first glance we can just scroll one-two pixels to the right...

Need more investigations... ot you can try to add a few pixels to right inset of SectionView.

regards,
Stas

        public float getPreferredSpan(int axis) {
            if (axis==View.X_AXIS) {
                TabExpander ex=getTabExpander();
                if (ex==null) {
                    //paragraph implements TabExpander
                    ex=(TabExpander)this.getParent().getParent();
                    getTabbedSpan(0, ex);
                }
            }
            return super.getPreferredSpan(axis);
        }

Hi.

Is there a way to overwrite the layout method in BlockView class without overwriting the create method in ViewFactory class?

Thnx.