/* * @(#)ListView.java	1.28 03/12/19 * * Copyright 2004 Sun Microsystems, Inc. All rights reserved. * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms. */package javax.swing.text.html;import java.util.Enumeration;import java.awt.*;import javax.swing.text.*;/** * A view implementation to display an html list * * @author  Timothy Prinzing * @version 1.28 12/19/03 */public class ListView extends BlockView  {    /**     * Creates a new view that represents a list element.     *     * @param elem the element to create a view for     */    public ListView(Element elem) {	super(elem, View.Y_AXIS);    }    /**     * Calculates the desired shape of the list.     *     * @return the desired span     * @see View#getPreferredSpan     */    public float getAlignment(int axis) {        switch (axis) {        case View.X_AXIS:            return 0.5f;        case View.Y_AXIS:            return 0.5f;        default:            throw new IllegalArgumentException("Invalid axis: " + axis);        }    }    /**     * Renders using the given rendering surface and area on that     * surface.     *     * @param g the rendering surface to use     * @param allocation the allocated region to render into     * @see View#paint     */    public void paint(Graphics g, Shape allocation) {	super.paint(g, allocation);	Rectangle alloc = allocation.getBounds();	Rectangle clip = g.getClipBounds();	// Since listPainter paints in the insets we have to check for the	// case where the child is not painted because the paint region is	// to the left of the child. This assumes the ListPainter paints in	// the left margin.	if ((clip.x + clip.width) < (alloc.x + getLeftInset())) {	    Rectangle childRect = alloc;	    alloc = getInsideAllocation(allocation);	    int n = getViewCount();	    int endY = clip.y + clip.height;	    for (int i = 0; i < n; i++) {		childRect.setBounds(alloc);		childAllocation(i, childRect);		if (childRect.y < endY) {		    if ((childRect.y + childRect.height) >= clip.y) {			listPainter.paint(g, childRect.x, childRect.y,					  childRect.width, childRect.height,					  this, i);		    }		}		else {		    break;		}	    }	}    }    /**     * Paints one of the children; called by paint().  By default     * that is all it does, but a subclass can use this to paint     * things relative to the child.     *     * @param g the graphics context     * @param alloc the allocated region to render the child into     * @param index the index of the child     */    protected void paintChild(Graphics g, Rectangle alloc, int index) {	listPainter.paint(g, alloc.x, alloc.y, alloc.width, alloc.height, this, index);	super.paintChild(g, alloc, index);    }    protected void setPropertiesFromAttributes() {	super.setPropertiesFromAttributes();	listPainter = getStyleSheet().getListPainter(getAttributes());    }    private StyleSheet.ListPainter listPainter;}