Java Code Examples for javax.swing.text.ViewFactory#create()

/**
 * Loads child views by tracking child elements of the element
 * this view was created for.
 * @param index index at which the views should be added/replaced.
 * @param removeLength number of removed children views. It is useful
 *  when rebuilding children for a portion of the view.
 * @param elementIndex index of the first child element for which
 *  the view should be created
 * @param elementCount number of elements for which the views should be created.
 */
protected void elementReloadChildren(int index, int removeLength,
int elementCount) {

    Element e = getElement();
    View[] added = null;

    ViewFactory f = getViewFactory();
    // Null view factory can mean that one of the grand parents is already disconnected
    // from the view hierarchy. No added children for null factory.
        
    if (f != null) {
        added = new View[elementCount];
        for (int i = 0; i < elementCount; i++) {
            added[i] = f.create(e.getElement(index + i));
        }

    }

    replace(index, removeLength, added);
}
 

public static View createView(JXLabel c) {
	BasicEditorKit kit = getFactory();
	float rightIndent = 0;
	if (c.getIcon() != null && c.getHorizontalTextPosition() != SwingConstants.CENTER) {
		rightIndent = c.getIcon().getIconWidth() + c.getIconTextGap();
	}
	Document doc = kit.createDefaultDocument(c.getFont(), c.getForeground(), c.getTextAlignment(), rightIndent);
	Reader r = new StringReader(c.getText() == null ? "" : c.getText());
	try {
		kit.read(r, doc, 0);
	} catch (Throwable e) {
	}
	ViewFactory f = kit.getViewFactory();
	View hview = f.create(doc.getDefaultRootElement());
	View v = new Renderer(c, f, hview, true);
	return v;
}
 

protected @Override View createCustomView(ViewFactory f,
int startOffset, int maxEndOffset, int elementIndex) {
    if (elementIndex == -1) {
        throw new IllegalStateException("Need underlying line element structure"); // NOI18N
    }
    
    View view = null;

    Element elem = getElement();
    Element lineElem = elem.getElement(elementIndex);
    view = f.create(lineElem);
    return view;
}
 

protected @Override void reloadChildren(int index, int removeLength, int startOffset, int endOffset) {
    // TODO uncomment assert (index == 0 && removeLength == 0
        // && startOffset == getStartOffset() && endOffset == getEndOffset());

    // Rebuild all the present child views completely
    index = 0;
    removeLength = getViewCount();

    Element lineElem = getElement(); // starting line element
    View[] added = null;
    ViewFactory f = getViewFactory();
    if (f != null) {
        int lineElemEndOffset = lineElem.getEndOffset();
        // Ending offset of the previously created view - here start with
        //   begining of the first line
        int lastViewEndOffset = lineElem.getStartOffset();

        List childViews = new ArrayList();
        // Append ending fragment if necessary
        // asserted non-empty list => foldEndOffset populated
        if (lastViewEndOffset < lineElemEndOffset) { // need ending fragment
            View lineView = f.create(lineElem);
            View endingFrag = lineView.createFragment(lastViewEndOffset, lineElemEndOffset);
            childViews.add(endingFrag);
            // lastViewEndOffset = lineElemEndOffset;  <- can be ignored here
        }

        added = new View[childViews.size()];
        childViews.toArray(added);
    }

    
    replace(index, removeLength, added);
}
 

@Override
protected void loadChildren(ViewFactory f)
{
    if (f == null) { return; }
    Element e = getElement();

    if (e.getElementCount() > 0)
    {
        View[] added = new View[1];
        // load children (element) using ViewFactory (a new View)
        // elements should contain only 1 LeafElement
        added[0] = f.create(e.getElement(0));
        replace(0, 1, added);
    }
}