| /* ParagraphView.java -- Renders a paragraph in HTML |
| Copyright (C) 2006 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath 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 for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| |
| package javax.swing.text.html; |
| |
| import java.awt.Graphics; |
| import java.awt.Shape; |
| |
| import javax.swing.SizeRequirements; |
| import javax.swing.text.AttributeSet; |
| import javax.swing.text.Document; |
| import javax.swing.text.Element; |
| import javax.swing.text.View; |
| |
| /** |
| * Renders a paragraph in HTML. This is a subclass of |
| * {@link javax.swing.text.ParagraphView} with some adjustments for |
| * understanding stylesheets. |
| * |
| * @author Roman Kennke (kennke@aicas.com) |
| */ |
| public class ParagraphView |
| extends javax.swing.text.ParagraphView |
| { |
| |
| /** |
| * Creates a new ParagraphView for the specified element. |
| * |
| * @param element the element |
| */ |
| public ParagraphView(Element element) |
| { |
| super(element); |
| } |
| |
| /** |
| * Sets the parent of this view. This is implemented to call the parent |
| * functionality and then trigger {@link #setPropertiesFromAttributes} in |
| * order to load the stylesheet attributes. |
| * |
| * @param parent the parent view to set |
| */ |
| public void setParent(View parent) |
| { |
| super.setParent(parent); |
| if (parent != null) |
| setPropertiesFromAttributes(); |
| } |
| |
| /** |
| * Returns the attributes used by this view. This is implemented to multiplex |
| * the attributes of the model with the attributes of the stylesheet. |
| */ |
| public AttributeSet getAttributes() |
| { |
| // FIXME: Implement this multiplexing thing. |
| return super.getAttributes(); |
| } |
| |
| /** |
| * Loads the visual properties of the ParagraphView from the element's |
| * attributes and the stylesheet of the HTML document. |
| */ |
| protected void setPropertiesFromAttributes() |
| { |
| // FIXME: Implement this. |
| } |
| |
| /** |
| * Returns the stylesheet used by this view. |
| * |
| * @return the stylesheet used by this view |
| */ |
| protected StyleSheet getStyleSheet() |
| { |
| Document doc = getDocument(); |
| StyleSheet styleSheet = null; |
| if (doc instanceof HTMLDocument) |
| styleSheet = ((HTMLDocument) doc).getStyleSheet(); |
| return styleSheet; |
| } |
| |
| /** |
| * Calculates the minor axis requirements of this view. This is implemented |
| * to return the super class'es requirements and modifies the minimumSpan |
| * slightly so that it is not smaller than the length of the longest word. |
| * |
| * @param axis the axis |
| * @param r the SizeRequirements object to be used as return parameter; |
| * if <code>null</code> a new one will be created |
| * |
| * @return the requirements along the minor layout axis |
| */ |
| protected SizeRequirements calculateMinorAxisRequirements(int axis, |
| SizeRequirements r) |
| { |
| // FIXME: Implement the above specified behaviour. |
| return super.calculateMinorAxisRequirements(axis, r); |
| } |
| |
| /** |
| * Determines if this view is visible or not. If none of the children is |
| * visible and the only visible child is the break that ends the paragraph, |
| * this paragraph is not considered to be visible. |
| * |
| * @return the visibility of this paragraph |
| */ |
| public boolean isVisible() |
| { |
| // FIXME: Implement the above specified behaviour. |
| return super.isVisible(); |
| } |
| |
| /** |
| * Paints this view. This delegates to the superclass after the coordinates |
| * have been updated for tab calculations. |
| * |
| * @param g the graphics object |
| * @param a the current allocation of this view |
| */ |
| public void paint(Graphics g, Shape a) |
| { |
| // FIXME: Implement the above specified behaviour. |
| super.paint(g, a); |
| } |
| |
| /** |
| * Returns the preferred span of this view. If this view is not visible, |
| * we return <code>0</code>, otherwise the super class is called. |
| * |
| * @param axis the axis |
| * |
| * @return the preferred span of this view |
| */ |
| public float getPreferredSpan(int axis) |
| { |
| float span = 0; |
| if (isVisible()) |
| span = super.getPreferredSpan(axis); |
| return span; |
| } |
| |
| /** |
| * Returns the minimum span of this view. If this view is not visible, |
| * we return <code>0</code>, otherwise the super class is called. |
| * |
| * @param axis the axis |
| * |
| * @return the minimum span of this view |
| */ |
| public float getMinimumSpan(int axis) |
| { |
| float span = 0; |
| if (isVisible()) |
| span = super.getMinimumSpan(axis); |
| return span; |
| } |
| |
| /** |
| * Returns the maximum span of this view. If this view is not visible, |
| * we return <code>0</code>, otherwise the super class is called. |
| * |
| * @param axis the axis |
| * |
| * @return the maximum span of this view |
| */ |
| public float getMaximumSpan(int axis) |
| { |
| float span = 0; |
| if (isVisible()) |
| span = super.getMaximumSpan(axis); |
| return span; |
| } |
| } |