| /* View.java -- |
| Copyright (C) 2002, 2004, 2005 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., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 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; |
| |
| import java.awt.Container; |
| import java.awt.Graphics; |
| import java.awt.Shape; |
| |
| import javax.swing.SwingConstants; |
| |
| public abstract class View implements SwingConstants |
| { |
| public static final int BadBreakWeight = 0; |
| public static final int ExcellentBreakWeight = 2000; |
| public static final int ForcedBreakWeight = 3000; |
| public static final int GoodBreakWeight = 1000; |
| |
| public static final int X_AXIS = 0; |
| public static final int Y_AXIS = 1; |
| |
| private float width, height; |
| private Element elt; |
| private View parent; |
| |
| /** |
| * Creates a new <code>View</code> instance. |
| * |
| * @param elem an <code>Element</code> value |
| */ |
| public View(Element elem) |
| { |
| elt = elem; |
| } |
| |
| public abstract void paint(Graphics g, Shape s); |
| |
| public void setParent(View parent) |
| { |
| this.parent = parent; |
| } |
| |
| public View getParent() |
| { |
| return parent; |
| } |
| |
| public Container getContainer() |
| { |
| View parent = getParent(); |
| return parent != null ? parent.getContainer() : null; |
| } |
| |
| public Document getDocument() |
| { |
| return getElement().getDocument(); |
| } |
| |
| public Element getElement() |
| { |
| return elt; |
| } |
| |
| public abstract float getPreferredSpan(int axis); |
| |
| public int getResizeWeight(int axis) |
| { |
| return 0; |
| } |
| |
| public float getMaximumSpan(int axis) |
| { |
| if (getResizeWeight(axis) <= 0) |
| return getPreferredSpan(axis); |
| |
| return Integer.MAX_VALUE; |
| } |
| |
| public float getMinimumSpan(int axis) |
| { |
| if (getResizeWeight(axis) <= 0) |
| return getPreferredSpan(axis); |
| |
| return Integer.MAX_VALUE; |
| } |
| |
| public void setSize(float width, float height) |
| { |
| // The default implementation does nothing. |
| } |
| |
| public float getAlignment(int axis) |
| { |
| return 0.5f; |
| } |
| |
| public AttributeSet getAttributes() |
| { |
| return getElement().getAttributes(); |
| } |
| |
| public boolean isVisible() |
| { |
| return true; |
| } |
| |
| public int getViewCount() |
| { |
| return 0; |
| } |
| |
| public View getView(int index) |
| { |
| return null; |
| } |
| |
| public ViewFactory getViewFactory() |
| { |
| View parent = getParent(); |
| return parent != null ? parent.getViewFactory() : null; |
| } |
| |
| public void replace(int offset, int length, View[] views) |
| { |
| // Default implementation does nothing. |
| } |
| |
| public void insert(int offset, View view) |
| { |
| View[] array = { view }; |
| replace(offset, 1, array); |
| } |
| |
| public void append(View view) |
| { |
| View[] array = { view }; |
| replace(getViewCount(), 1, array); |
| } |
| |
| public void removeAll() |
| { |
| replace(0, getViewCount(), null); |
| } |
| |
| public void remove(int index) |
| { |
| replace(index, 1, null); |
| } |
| |
| public View createFragment(int p0, int p1) |
| { |
| // The default implementation doesn't support fragmentation. |
| return this; |
| } |
| |
| public int getStartOffset() |
| { |
| return getElement().getStartOffset(); |
| } |
| |
| public int getEndOffset() |
| { |
| return getElement().getEndOffset(); |
| } |
| |
| public Shape getChildAllocation(int index, Shape a) |
| { |
| return null; |
| } |
| |
| /** |
| * @since 1.4 |
| */ |
| public int getViewIndex(float x, float y, Shape allocation) |
| { |
| return -1; |
| } |
| |
| /** |
| * @since 1.4 |
| */ |
| public String getToolTipText(float x, float y, Shape allocation) |
| { |
| int index = getViewIndex(x, y, allocation); |
| |
| if (index < -1) |
| return null; |
| |
| Shape childAllocation = getChildAllocation(index, allocation); |
| |
| if (childAllocation.getBounds().contains(x, y)) |
| return getView(index).getToolTipText(x, y, childAllocation); |
| |
| return null; |
| } |
| |
| /** |
| * @since 1.3 |
| */ |
| public Graphics getGraphics() |
| { |
| return getContainer().getGraphics(); |
| } |
| |
| public void preferenceChanged(View child, boolean width, boolean height) |
| { |
| if (parent != null) |
| parent.preferenceChanged(this, width, height); |
| } |
| |
| public int getBreakWeight(int axis, float pos, float len) |
| { |
| return BadBreakWeight; |
| } |
| |
| public View breakView(int axis, int offset, float pos, float len) |
| { |
| return this; |
| } |
| |
| /** |
| * @since 1.3 |
| */ |
| public int getViewIndex(int pos, Position.Bias b) |
| { |
| return -1; |
| } |
| } |
| |