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package javax.swing.plaf;

import javax.swing.Action;
import javax.swing.BoundedRangeModel;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.Insets;
import javax.swing.text.*;

Text editor user interface
Author:
 Timothy Prinzing/**
 * Text editor user interface
 *
 * @author  Timothy Prinzing
 */
public abstract class TextUI extends ComponentUI
{
    
Converts the given location in the model to a place in
the view coordinate system.
Params:
pos –  the local location in the model to translate >= 0
Throws:
BadLocationException –  if the given position does not
  represent a valid location in the associated document
Returns:
the coordinates as a rectangle/**
     * Converts the given location in the model to a place in
     * the view coordinate system.
     *
     * @param pos  the local location in the model to translate >= 0
     * @return the coordinates as a rectangle
     * @exception BadLocationException  if the given position does not
     *   represent a valid location in the associated document
     */
    public abstract Rectangle modelToView(JTextComponent t, int pos) throws BadLocationException;

    
Converts the given location in the model to a place in
the view coordinate system.
Params:
pos –  the local location in the model to translate >= 0
Throws:
BadLocationException –  if the given position does not
  represent a valid location in the associated document
Returns:
the coordinates as a rectangle/**
     * Converts the given location in the model to a place in
     * the view coordinate system.
     *
     * @param pos  the local location in the model to translate >= 0
     * @return the coordinates as a rectangle
     * @exception BadLocationException  if the given position does not
     *   represent a valid location in the associated document
     */
    public abstract Rectangle modelToView(JTextComponent t, int pos, Position.Bias bias) throws BadLocationException;

    
Converts the given place in the view coordinate system
to the nearest representative location in the model.
Params:
pt –  the location in the view to translate.  This
  should be in the same coordinate system as the mouse
  events.
Returns:
the offset from the start of the document >= 0/**
     * Converts the given place in the view coordinate system
     * to the nearest representative location in the model.
     *
     * @param pt  the location in the view to translate.  This
     *   should be in the same coordinate system as the mouse
     *   events.
     * @return the offset from the start of the document >= 0
     */
    public abstract int viewToModel(JTextComponent t, Point pt);

    
Provides a mapping from the view coordinate space to the logical
coordinate space of the model.
Params:
pt – the location in the view to translate.
          This should be in the same coordinate system
          as the mouse events.
biasReturn – 
          filled in by this method to indicate whether
          the point given is closer to the previous or the next
          character in the model
Returns:
the location within the model that best represents the
        given point in the view >= 0/**
     * Provides a mapping from the view coordinate space to the logical
     * coordinate space of the model.
     *
     * @param pt the location in the view to translate.
     *           This should be in the same coordinate system
     *           as the mouse events.
     * @param biasReturn
     *           filled in by this method to indicate whether
     *           the point given is closer to the previous or the next
     *           character in the model
     *
     * @return the location within the model that best represents the
     *         given point in the view >= 0
     */
    public abstract int viewToModel(JTextComponent t, Point pt,
                                    Position.Bias[] biasReturn);

    
Provides a way to determine the next visually represented model
location that one might place a caret.  Some views may not be visible,
they might not be in the same order found in the model, or they just
might not allow access to some of the locations in the model.
Params:
t – the text component for which this UI is installed
pos – the position to convert >= 0
b – the bias for the position
direction – the direction from the current position that can
 be thought of as the arrow keys typically found on a keyboard.
 This may be SwingConstants.WEST, SwingConstants.EAST,
 SwingConstants.NORTH, or SwingConstants.SOUTH
biasRet – an array to contain the bias for the returned position
Throws:
BadLocationException – 
IllegalArgumentException – for an invalid direction
Returns:
the location within the model that best represents the next
 location visual position/**
     * Provides a way to determine the next visually represented model
     * location that one might place a caret.  Some views may not be visible,
     * they might not be in the same order found in the model, or they just
     * might not allow access to some of the locations in the model.
     *
     * @param t the text component for which this UI is installed
     * @param pos the position to convert >= 0
     * @param b the bias for the position
     * @param direction the direction from the current position that can
     *  be thought of as the arrow keys typically found on a keyboard.
     *  This may be SwingConstants.WEST, SwingConstants.EAST,
     *  SwingConstants.NORTH, or SwingConstants.SOUTH
     * @param biasRet an array to contain the bias for the returned position
     * @return the location within the model that best represents the next
     *  location visual position
     * @exception BadLocationException
     * @exception IllegalArgumentException for an invalid direction
     */
    public abstract int getNextVisualPositionFrom(JTextComponent t,
                         int pos, Position.Bias b,
                         int direction, Position.Bias[] biasRet)
                         throws BadLocationException;

    
Causes the portion of the view responsible for the
given part of the model to be repainted.
Params:
p0 – the beginning of the range >= 0
p1 – the end of the range >= p0/**
     * Causes the portion of the view responsible for the
     * given part of the model to be repainted.
     *
     * @param p0 the beginning of the range >= 0
     * @param p1 the end of the range >= p0
     */
    public abstract void damageRange(JTextComponent t, int p0, int p1);

    
Causes the portion of the view responsible for the
given part of the model to be repainted.
Params:
p0 – the beginning of the range >= 0
p1 – the end of the range >= p0/**
     * Causes the portion of the view responsible for the
     * given part of the model to be repainted.
     *
     * @param p0 the beginning of the range >= 0
     * @param p1 the end of the range >= p0
     */
    public abstract void damageRange(JTextComponent t, int p0, int p1,
                                     Position.Bias firstBias,
                                     Position.Bias secondBias);

    
Fetches the binding of services that set a policy
for the type of document being edited.  This contains
things like the commands available, stream readers and
writers, etc.
Returns:
the editor kit binding/**
     * Fetches the binding of services that set a policy
     * for the type of document being edited.  This contains
     * things like the commands available, stream readers and
     * writers, etc.
     *
     * @return the editor kit binding
     */
    public abstract EditorKit getEditorKit(JTextComponent t);

    
Fetches a View with the allocation of the associated
text component (i.e. the root of the hierarchy) that
can be traversed to determine how the model is being
represented spatially.
Returns:
the view/**
     * Fetches a View with the allocation of the associated
     * text component (i.e. the root of the hierarchy) that
     * can be traversed to determine how the model is being
     * represented spatially.
     *
     * @return the view
     */
    public abstract View getRootView(JTextComponent t);

    
Returns the string to be used as the tooltip at the passed in location.
See Also:
getToolTipText.getToolTipText
Since:
1.4/**
     * Returns the string to be used as the tooltip at the passed in location.
     *
     * @see javax.swing.text.JTextComponent#getToolTipText
     * @since 1.4
     */
    public String getToolTipText(JTextComponent t, Point pt) {
        return null;
    }
}