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package org.jgrasstools.gui.utils;

import javax.swing.text.AbstractDocument;
import javax.swing.text.BoxView;
import javax.swing.text.ComponentView;
import javax.swing.text.Element;
import javax.swing.text.IconView;
import javax.swing.text.LabelView;
import javax.swing.text.ParagraphView;
import javax.swing.text.StyleConstants;
import javax.swing.text.StyledEditorKit;
import javax.swing.text.View;
import javax.swing.text.ViewFactory;

public class WrapEditorKit extends StyledEditorKit {
    ViewFactory defaultFactory = new WrapColumnFactory();
    public ViewFactory getViewFactory() {
        return defaultFactory;
    }

}

class WrapColumnFactory implements ViewFactory {
    public View create( Element elem ) {
        String kind = elem.getName();
        if (kind != null) {
            if (kind.equals(AbstractDocument.ContentElementName)) {
                return new WrapLabelView(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 LabelView(elem);
    }
}

class WrapLabelView extends LabelView {
    public WrapLabelView( Element elem ) {
        super(elem);
    }

    public float getMinimumSpan( int axis ) {
        switch( axis ) {
        case View.X_AXIS:
            return 0;
        case View.Y_AXIS:
            return super.getMinimumSpan(axis);
        default:
            throw new IllegalArgumentException("Invalid axis: " + axis);
        }
    }

}