gcc/libjava/classpath/javax/swing/text/ComponentView.java

/* ComponentView.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
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General Public License for more details.

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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
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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
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package javax.swing.text;

import java.awt.Component;
import java.awt.Graphics;
import java.awt.Shape;

import javax.swing.SwingConstants;

/**
 * A {@link View} implementation that is able to render arbitrary
 * {@link Component}s. This uses the attribute
 * {@link StyleConstants#ComponentAttribute} to determine the
 * <code>Component</code> that should be rendered. This <code>Component</code>
 * becomes a direct child of the <code>JTextComponent</code> that contains
 * this <code>ComponentView</code>, so this view must not be shared between
 * multiple <code>JTextComponent</code>s.
 *
 * @author original author unknown
 * @author Roman Kennke (roman@kennke.org)
 */
// FIXME: This class is a complete stub and needs to be implemented properly.
public class ComponentView extends View
{
  /**
   * Creates a new instance of <code>ComponentView</code> for the specified
   * <code>Element</code>.
   *
   * @param elem the element that this <code>View</code> is rendering
   */
  public ComponentView(Element elem)
  {
    super(elem);
  }

  /**
   * Creates the <code>Component</code> that this <code>View</code> is
   * rendering. The <code>Component</code> is determined using
   * the {@link StyleConstants#ComponentAttribute} of the associated
   * <code>Element</code>.
   *
   * @return the component that is rendered
   */
  protected  Component createComponent()
  {
    return StyleConstants.getComponent(getElement().getAttributes());
  }

  /**
   * Returns the alignment of this <code>View</code> along the specified axis.
   *
   * @param axis either {@link View#X_AXIS} or {@link View#Y_AXIS}
   *
   * @return the alignment of this <code>View</code> along the specified axis
   */
  public float getAlignment(int axis)
  {
    return 0;
  }

  /**
   * Returns the <code>Component</code> that is rendered by this
   * <code>ComponentView</code>.
   *
   * @return the <code>Component</code> that is rendered by this
   *         <code>ComponentView</code>
   */
  public final Component getComponent()
  {
    return null;
  }

  /**
   * Returns the maximum span of this <code>View</code> along the specified
   * axis.
   *
   * This will return {@link Component#getMaximumSize()} for the specified
   * axis.
   *
   * @return the maximum span of this <code>View</code> along the specified
   *         axis
   */
  public float getMaximumSpan(int axis)
  {
    return 0;
  }

  public float getMinimumSpan(int axis)
  {
    // TODO: Implement this properly.
    return 0;
  }

  public float getPreferredSpan(int axis)
  {
    // TODO: Implement this properly.
    return 0;
  }

  public Shape modelToView(int pos, Shape a, Position.Bias b)
    throws BadLocationException
  {
    // TODO: Implement this properly.
    return null;
  }
    
  public void paint(Graphics g, Shape a)
  {
    // TODO: Implement this properly.
  }
  
  public void setParent(View p)
  {
    // TODO: Implement this properly.
  }
    
  public void setSize(float width, float height)
  {
    // TODO: Implement this properly.
  }
    
  public int viewToModel(float x, float y, Shape a, Position.Bias[] bias)
  {
    // TODO: Implement this properly.
    return 0;
  }

  /**
   * Maps coordinates from the <code>View</code>'s space into a position
   * in the document model.
   *
   * @param x the x coordinate in the view space
   * @param y the y coordinate in the view space
   * @param a the allocation of this <code>View</code>
   * @param b the bias to use
   *
   * @return the position in the document that corresponds to the screen
   *         coordinates <code>x, y</code>
   */
  public int viewToModel(float x, float y, Shape a, Position.Bias b)
  {
    // FIXME: Implement this properly.
    return 0;
  }

  /**
   * Returns the document position that is (visually) nearest to the given
   * document position <code>pos</code> in the given direction <code>d</code>.
   *
   * @param c the text component
   * @param pos the document position
   * @param b the bias for <code>pos</code>
   * @param d the direction, must be either {@link SwingConstants#NORTH},
   *        {@link SwingConstants#SOUTH}, {@link SwingConstants#WEST} or
   *        {@link SwingConstants#EAST}
   * @param biasRet an array of {@link Position.Bias} that can hold at least
   *        one element, which is filled with the bias of the return position
   *        on method exit
   *
   * @return the document position that is (visually) nearest to the given
   *         document position <code>pos</code> in the given direction
   *         <code>d</code>
   *
   * @throws BadLocationException if <code>pos</code> is not a valid offset in
   *         the document model
   */
  public int getNextVisualPositionFrom(JTextComponent c, int pos,
                                       Position.Bias b, int d,
                                       Position.Bias[] biasRet)
    throws BadLocationException
  {
    // TODO: Implement this properly.
    throw new AssertionError("Not implemented yet.");
  }
}