| /* |
| * Copyright (c) 1998, 2000, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| package javax.swing.text.html; |
| |
| import javax.swing.text.*; |
| import java.awt.*; |
| |
| /** |
| * This is the view associated with the html tag NOFRAMES. |
| * This view has been written to ignore the contents of the |
| * NOFRAMES tag. The contents of the tag will only be visible |
| * when the JTextComponent the view is contained in is editable. |
| * |
| * @author Sunita Mani |
| */ |
| class NoFramesView extends BlockView { |
| |
| /** |
| * Creates a new view that represents an |
| * html box. This can be used for a number |
| * of elements. By default this view is not |
| * visible. |
| * |
| * @param elem the element to create a view for |
| * @param axis either View.X_AXIS or View.Y_AXIS |
| */ |
| public NoFramesView(Element elem, int axis) { |
| super(elem, axis); |
| visible = false; |
| } |
| |
| |
| /** |
| * If this view is not visible, then it returns. |
| * Otherwise it invokes the superclass. |
| * |
| * @param g the rendering surface to use |
| * @param allocation the allocated region to render into |
| * @see #isVisible |
| * @see text.ParagraphView#paint |
| */ |
| public void paint(Graphics g, Shape allocation) { |
| Container host = getContainer(); |
| if (host != null && |
| visible != ((JTextComponent)host).isEditable()) { |
| visible = ((JTextComponent)host).isEditable(); |
| } |
| |
| if (!isVisible()) { |
| return; |
| } |
| super.paint(g, allocation); |
| } |
| |
| |
| /** |
| * Determines if the JTextComponent that the view |
| * is contained in is editable. If so, then this |
| * view and all its child views are visible. |
| * Once this has been determined, the superclass |
| * is invoked to continue processing. |
| * |
| * @param p the parent View. |
| * @see BlockView#setParent |
| */ |
| public void setParent(View p) { |
| if (p != null) { |
| Container host = p.getContainer(); |
| if (host != null) { |
| visible = ((JTextComponent)host).isEditable(); |
| } |
| } |
| super.setParent(p); |
| } |
| |
| /** |
| * Returns a true/false value that represents |
| * whether the view is visible or not. |
| */ |
| public boolean isVisible() { |
| return visible; |
| } |
| |
| |
| /** |
| * Do nothing if the view is not visible, otherwise |
| * invoke the superclass to perform layout. |
| */ |
| protected void layout(int width, int height) { |
| if (!isVisible()) { |
| return; |
| } |
| super.layout(width, height); |
| } |
| |
| /** |
| * Determines the preferred span for this view. Returns |
| * 0 if the view is not visible, otherwise it calls the |
| * superclass method to get the preferred span. |
| * axis. |
| * |
| * @param axis may be either View.X_AXIS or View.Y_AXIS |
| * @return the span the view would like to be rendered into; |
| * typically the view is told to render into the span |
| * that is returned, although there is no guarantee; |
| * the parent may choose to resize or break the view |
| * @see text.ParagraphView#getPreferredSpan |
| */ |
| public float getPreferredSpan(int axis) { |
| if (!visible) { |
| return 0; |
| } |
| return super.getPreferredSpan(axis); |
| } |
| |
| /** |
| * Determines the minimum span for this view along an |
| * axis. Returns 0 if the view is not visible, otherwise |
| * it calls the superclass method to get the minimum span. |
| * |
| * @param axis may be either <code>View.X_AXIS</code> or |
| * <code>View.Y_AXIS</code> |
| * @return the minimum span the view can be rendered into |
| * @see text.ParagraphView#getMinimumSpan |
| */ |
| public float getMinimumSpan(int axis) { |
| if (!visible) { |
| return 0; |
| } |
| return super.getMinimumSpan(axis); |
| } |
| |
| /** |
| * Determines the maximum span for this view along an |
| * axis. Returns 0 if the view is not visible, otherwise |
| * it calls the superclass method ot get the maximum span. |
| * |
| * @param axis may be either <code>View.X_AXIS</code> or |
| * <code>View.Y_AXIS</code> |
| * @return the maximum span the view can be rendered into |
| * @see text.ParagraphView#getMaximumSpan |
| */ |
| public float getMaximumSpan(int axis) { |
| if (!visible) { |
| return 0; |
| } |
| return super.getMaximumSpan(axis); |
| } |
| |
| boolean visible; |
| } |