mirror of
https://github.com/autc04/Retro68.git
synced 2024-12-13 03:29:50 +00:00
1539 lines
46 KiB
Java
1539 lines
46 KiB
Java
/* BasicTextUI.java --
|
|
Copyright (C) 2002, 2003, 2004, 2005, 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.plaf.basic;
|
|
|
|
import gnu.classpath.SystemProperties;
|
|
|
|
import java.awt.Color;
|
|
import java.awt.Container;
|
|
import java.awt.Dimension;
|
|
import java.awt.Graphics;
|
|
import java.awt.HeadlessException;
|
|
import java.awt.Insets;
|
|
import java.awt.Point;
|
|
import java.awt.Rectangle;
|
|
import java.awt.Shape;
|
|
import java.awt.Toolkit;
|
|
import java.awt.datatransfer.Clipboard;
|
|
import java.awt.datatransfer.StringSelection;
|
|
import java.awt.event.FocusEvent;
|
|
import java.awt.event.FocusListener;
|
|
import java.beans.PropertyChangeEvent;
|
|
import java.beans.PropertyChangeListener;
|
|
|
|
import javax.swing.Action;
|
|
import javax.swing.ActionMap;
|
|
import javax.swing.InputMap;
|
|
import javax.swing.JComponent;
|
|
import javax.swing.LookAndFeel;
|
|
import javax.swing.SwingConstants;
|
|
import javax.swing.SwingUtilities;
|
|
import javax.swing.TransferHandler;
|
|
import javax.swing.UIManager;
|
|
import javax.swing.event.DocumentEvent;
|
|
import javax.swing.event.DocumentListener;
|
|
import javax.swing.plaf.ActionMapUIResource;
|
|
import javax.swing.plaf.InputMapUIResource;
|
|
import javax.swing.plaf.TextUI;
|
|
import javax.swing.plaf.UIResource;
|
|
import javax.swing.text.AbstractDocument;
|
|
import javax.swing.text.AttributeSet;
|
|
import javax.swing.text.BadLocationException;
|
|
import javax.swing.text.Caret;
|
|
import javax.swing.text.DefaultCaret;
|
|
import javax.swing.text.DefaultEditorKit;
|
|
import javax.swing.text.DefaultHighlighter;
|
|
import javax.swing.text.Document;
|
|
import javax.swing.text.EditorKit;
|
|
import javax.swing.text.Element;
|
|
import javax.swing.text.Highlighter;
|
|
import javax.swing.text.JTextComponent;
|
|
import javax.swing.text.Keymap;
|
|
import javax.swing.text.Position;
|
|
import javax.swing.text.View;
|
|
import javax.swing.text.ViewFactory;
|
|
|
|
/**
|
|
* The abstract base class from which the UI classes for Swings text
|
|
* components are derived. This provides most of the functionality for
|
|
* the UI classes.
|
|
*
|
|
* @author original author unknown
|
|
* @author Roman Kennke (roman@kennke.org)
|
|
*/
|
|
public abstract class BasicTextUI extends TextUI
|
|
implements ViewFactory
|
|
{
|
|
/**
|
|
* A {@link DefaultCaret} that implements {@link UIResource}.
|
|
*/
|
|
public static class BasicCaret extends DefaultCaret implements UIResource
|
|
{
|
|
public BasicCaret()
|
|
{
|
|
// Nothing to do here.
|
|
}
|
|
}
|
|
|
|
/**
|
|
* A {@link DefaultHighlighter} that implements {@link UIResource}.
|
|
*/
|
|
public static class BasicHighlighter extends DefaultHighlighter
|
|
implements UIResource
|
|
{
|
|
public BasicHighlighter()
|
|
{
|
|
// Nothing to do here.
|
|
}
|
|
}
|
|
|
|
private static class FocusHandler
|
|
implements FocusListener
|
|
{
|
|
public void focusGained(FocusEvent e)
|
|
{
|
|
// Nothing to do here.
|
|
}
|
|
public void focusLost(FocusEvent e)
|
|
{
|
|
JTextComponent textComponent = (JTextComponent) e.getComponent();
|
|
// Integrates Swing text components with the system clipboard:
|
|
// The idea is that if one wants to copy text around X11-style
|
|
// (select text and middle-click in the target component) the focus
|
|
// will move to the new component which gives the old focus owner the
|
|
// possibility to paste its selection into the clipboard.
|
|
if (!e.isTemporary()
|
|
&& textComponent.getSelectionStart()
|
|
!= textComponent.getSelectionEnd())
|
|
{
|
|
SecurityManager sm = System.getSecurityManager();
|
|
try
|
|
{
|
|
if (sm != null)
|
|
sm.checkSystemClipboardAccess();
|
|
|
|
Clipboard cb = Toolkit.getDefaultToolkit().getSystemSelection();
|
|
if (cb != null)
|
|
{
|
|
StringSelection selection = new StringSelection(
|
|
textComponent.getSelectedText());
|
|
cb.setContents(selection, selection);
|
|
}
|
|
}
|
|
catch (SecurityException se)
|
|
{
|
|
// Not allowed to access the clipboard: Ignore and
|
|
// do not access it.
|
|
}
|
|
catch (HeadlessException he)
|
|
{
|
|
// There is no AWT: Ignore and do not access the
|
|
// clipboard.
|
|
}
|
|
catch (IllegalStateException ise)
|
|
{
|
|
// Clipboard is currently unavaible.
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* This FocusListener triggers repaints on focus shift.
|
|
*/
|
|
private static FocusListener focusListener;
|
|
|
|
/**
|
|
* Receives notifications when properties of the text component change.
|
|
*/
|
|
private class Handler
|
|
implements PropertyChangeListener, DocumentListener
|
|
{
|
|
/**
|
|
* Notifies when a property of the text component changes.
|
|
*
|
|
* @param event the PropertyChangeEvent describing the change
|
|
*/
|
|
public void propertyChange(PropertyChangeEvent event)
|
|
{
|
|
if (event.getPropertyName().equals("document"))
|
|
{
|
|
// Document changed.
|
|
Object oldValue = event.getOldValue();
|
|
if (oldValue != null)
|
|
{
|
|
Document oldDoc = (Document) oldValue;
|
|
oldDoc.removeDocumentListener(handler);
|
|
}
|
|
Object newValue = event.getNewValue();
|
|
if (newValue != null)
|
|
{
|
|
Document newDoc = (Document) newValue;
|
|
newDoc.addDocumentListener(handler);
|
|
}
|
|
modelChanged();
|
|
}
|
|
|
|
BasicTextUI.this.propertyChange(event);
|
|
}
|
|
|
|
/**
|
|
* Notification about a document change event.
|
|
*
|
|
* @param ev the DocumentEvent describing the change
|
|
*/
|
|
public void changedUpdate(DocumentEvent ev)
|
|
{
|
|
// Updates are forwarded to the View even if 'getVisibleEditorRect'
|
|
// method returns null. This means the View classes have to be
|
|
// aware of that possibility.
|
|
rootView.changedUpdate(ev, getVisibleEditorRect(),
|
|
rootView.getViewFactory());
|
|
}
|
|
|
|
/**
|
|
* Notification about a document insert event.
|
|
*
|
|
* @param ev the DocumentEvent describing the insertion
|
|
*/
|
|
public void insertUpdate(DocumentEvent ev)
|
|
{
|
|
// Updates are forwarded to the View even if 'getVisibleEditorRect'
|
|
// method returns null. This means the View classes have to be
|
|
// aware of that possibility.
|
|
rootView.insertUpdate(ev, getVisibleEditorRect(),
|
|
rootView.getViewFactory());
|
|
}
|
|
|
|
/**
|
|
* Notification about a document removal event.
|
|
*
|
|
* @param ev the DocumentEvent describing the removal
|
|
*/
|
|
public void removeUpdate(DocumentEvent ev)
|
|
{
|
|
// Updates are forwarded to the View even if 'getVisibleEditorRect'
|
|
// method returns null. This means the View classes have to be
|
|
// aware of that possibility.
|
|
rootView.removeUpdate(ev, getVisibleEditorRect(),
|
|
rootView.getViewFactory());
|
|
}
|
|
|
|
}
|
|
|
|
/**
|
|
* This view forms the root of the View hierarchy. However, it delegates
|
|
* most calls to another View which is the real root of the hierarchy.
|
|
* The purpose is to make sure that all Views in the hierarchy, including
|
|
* the (real) root have a well-defined parent to which they can delegate
|
|
* calls like {@link #preferenceChanged}, {@link #getViewFactory} and
|
|
* {@link #getContainer}.
|
|
*/
|
|
private class RootView extends View
|
|
{
|
|
/** The real root view. */
|
|
private View view;
|
|
|
|
/**
|
|
* Creates a new RootView.
|
|
*/
|
|
public RootView()
|
|
{
|
|
super(null);
|
|
}
|
|
|
|
/**
|
|
* Returns the ViewFactory for this RootView. If the current EditorKit
|
|
* provides a ViewFactory, this is used. Otherwise the TextUI itself
|
|
* is returned as a ViewFactory.
|
|
*
|
|
* @return the ViewFactory for this RootView
|
|
*/
|
|
public ViewFactory getViewFactory()
|
|
{
|
|
ViewFactory factory = null;
|
|
EditorKit editorKit = BasicTextUI.this.getEditorKit(getComponent());
|
|
factory = editorKit.getViewFactory();
|
|
if (factory == null)
|
|
factory = BasicTextUI.this;
|
|
return factory;
|
|
}
|
|
|
|
/**
|
|
* Indicates that the preferences of one of the child view has changed.
|
|
* This calls revalidate on the text component.
|
|
*
|
|
* @param v the child view which's preference has changed
|
|
* @param width <code>true</code> if the width preference has changed
|
|
* @param height <code>true</code> if the height preference has changed
|
|
*/
|
|
public void preferenceChanged(View v, boolean width, boolean height)
|
|
{
|
|
textComponent.revalidate();
|
|
}
|
|
|
|
/**
|
|
* Sets the real root view.
|
|
*
|
|
* @param v the root view to set
|
|
*/
|
|
public void setView(View v)
|
|
{
|
|
if (view != null)
|
|
view.setParent(null);
|
|
|
|
if (v != null)
|
|
v.setParent(this);
|
|
|
|
view = v;
|
|
}
|
|
|
|
/**
|
|
* Returns the real root view, regardless of the index.
|
|
*
|
|
* @param index not used here
|
|
*
|
|
* @return the real root view, regardless of the index.
|
|
*/
|
|
public View getView(int index)
|
|
{
|
|
return view;
|
|
}
|
|
|
|
/**
|
|
* Returns <code>1</code> since the RootView always contains one
|
|
* child, that is the real root of the View hierarchy.
|
|
*
|
|
* @return <code>1</code> since the RootView always contains one
|
|
* child, that is the real root of the View hierarchy
|
|
*/
|
|
public int getViewCount()
|
|
{
|
|
int count = 0;
|
|
if (view != null)
|
|
count = 1;
|
|
return count;
|
|
}
|
|
|
|
/**
|
|
* Returns the <code>Container</code> that contains this view. This
|
|
* normally will be the text component that is managed by this TextUI.
|
|
*
|
|
* @return the <code>Container</code> that contains this view
|
|
*/
|
|
public Container getContainer()
|
|
{
|
|
return textComponent;
|
|
}
|
|
|
|
/**
|
|
* Sets the size of the renderer. This is synchronized because that
|
|
* potentially triggers layout and we don't want more than one thread
|
|
* playing with the layout information.
|
|
*/
|
|
public synchronized void setSize(float w, float h)
|
|
{
|
|
if (view != null)
|
|
view.setSize(w, h);
|
|
}
|
|
|
|
/**
|
|
* Paints the view. This is delegated to the real root view.
|
|
*
|
|
* @param g the <code>Graphics</code> context to paint to
|
|
* @param s the allocation for the View
|
|
*/
|
|
public void paint(Graphics g, Shape s)
|
|
{
|
|
if (view != null)
|
|
{
|
|
Rectangle b = s instanceof Rectangle ? (Rectangle) s : s.getBounds();
|
|
setSize(b.width, b.height);
|
|
view.paint(g, s);
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Maps a position in the document into the coordinate space of the View.
|
|
* The output rectangle usually reflects the font height but has a width
|
|
* of zero.
|
|
*
|
|
* This is delegated to the real root view.
|
|
*
|
|
* @param position the position of the character in the model
|
|
* @param a the area that is occupied by the view
|
|
* @param bias either {@link Position.Bias#Forward} or
|
|
* {@link Position.Bias#Backward} depending on the preferred
|
|
* direction bias. If <code>null</code> this defaults to
|
|
* <code>Position.Bias.Forward</code>
|
|
*
|
|
* @return a rectangle that gives the location of the document position
|
|
* inside the view coordinate space
|
|
*
|
|
* @throws BadLocationException if <code>pos</code> is invalid
|
|
* @throws IllegalArgumentException if b is not one of the above listed
|
|
* valid values
|
|
*/
|
|
public Shape modelToView(int position, Shape a, Position.Bias bias)
|
|
throws BadLocationException
|
|
{
|
|
return view.modelToView(position, a, bias);
|
|
}
|
|
|
|
/**
|
|
* 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)
|
|
{
|
|
return view.viewToModel(x, y, a, b);
|
|
}
|
|
|
|
/**
|
|
* Notification about text insertions. These are forwarded to the
|
|
* real root view.
|
|
*
|
|
* @param ev the DocumentEvent describing the change
|
|
* @param shape the current allocation of the view's display
|
|
* @param vf the ViewFactory to use for creating new Views
|
|
*/
|
|
public void insertUpdate(DocumentEvent ev, Shape shape, ViewFactory vf)
|
|
{
|
|
if (view != null)
|
|
view.insertUpdate(ev, shape, vf);
|
|
}
|
|
|
|
/**
|
|
* Notification about text removals. These are forwarded to the
|
|
* real root view.
|
|
*
|
|
* @param ev the DocumentEvent describing the change
|
|
* @param shape the current allocation of the view's display
|
|
* @param vf the ViewFactory to use for creating new Views
|
|
*/
|
|
public void removeUpdate(DocumentEvent ev, Shape shape, ViewFactory vf)
|
|
{
|
|
if (view != null)
|
|
view.removeUpdate(ev, shape, vf);
|
|
}
|
|
|
|
/**
|
|
* Notification about text changes. These are forwarded to the
|
|
* real root view.
|
|
*
|
|
* @param ev the DocumentEvent describing the change
|
|
* @param shape the current allocation of the view's display
|
|
* @param vf the ViewFactory to use for creating new Views
|
|
*/
|
|
public void changedUpdate(DocumentEvent ev, Shape shape, ViewFactory vf)
|
|
{
|
|
if (view != null)
|
|
view.changedUpdate(ev, shape, vf);
|
|
}
|
|
|
|
/**
|
|
* Returns the document position that is (visually) nearest to the given
|
|
* document position <code>pos</code> in the given direction <code>d</code>.
|
|
*
|
|
* @param pos the document position
|
|
* @param b the bias for <code>pos</code>
|
|
* @param a the allocation for the view
|
|
* @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(int pos, Position.Bias b, Shape a,
|
|
int d, Position.Bias[] biasRet)
|
|
throws BadLocationException
|
|
{
|
|
return view.getNextVisualPositionFrom(pos, b, a, d, biasRet);
|
|
}
|
|
|
|
/**
|
|
* Returns the startOffset of this view, which is always the beginning
|
|
* of the document.
|
|
*
|
|
* @return the startOffset of this view
|
|
*/
|
|
public int getStartOffset()
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Returns the endOffset of this view, which is always the end
|
|
* of the document.
|
|
*
|
|
* @return the endOffset of this view
|
|
*/
|
|
public int getEndOffset()
|
|
{
|
|
return getDocument().getLength();
|
|
}
|
|
|
|
/**
|
|
* Returns the document associated with this view.
|
|
*
|
|
* @return the document associated with this view
|
|
*/
|
|
public Document getDocument()
|
|
{
|
|
return textComponent.getDocument();
|
|
}
|
|
|
|
/**
|
|
* Returns the attributes, which is null for the RootView.
|
|
*/
|
|
public AttributeSet getAttributes()
|
|
{
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Overridden to forward to the view.
|
|
*/
|
|
public float getPreferredSpan(int axis)
|
|
{
|
|
// The RI returns 10 in the degenerate case.
|
|
float span = 10;
|
|
if (view != null)
|
|
span = view.getPreferredSpan(axis);
|
|
return span;
|
|
}
|
|
|
|
/**
|
|
* Overridden to forward to the real view.
|
|
*/
|
|
public float getMinimumSpan(int axis)
|
|
{
|
|
// The RI returns 10 in the degenerate case.
|
|
float span = 10;
|
|
if (view != null)
|
|
span = view.getMinimumSpan(axis);
|
|
return span;
|
|
}
|
|
|
|
/**
|
|
* Overridden to return Integer.MAX_VALUE.
|
|
*/
|
|
public float getMaximumSpan(int axis)
|
|
{
|
|
// The RI returns Integer.MAX_VALUE here, regardless of the real view's
|
|
// maximum size.
|
|
return Integer.MAX_VALUE;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* The EditorKit used by this TextUI.
|
|
*/
|
|
private static EditorKit kit;
|
|
|
|
/**
|
|
* The combined event handler for text components.
|
|
*
|
|
* This is package private to avoid accessor methods.
|
|
*/
|
|
Handler handler;
|
|
|
|
/**
|
|
* The root view.
|
|
*
|
|
* This is package private to avoid accessor methods.
|
|
*/
|
|
RootView rootView;
|
|
|
|
/**
|
|
* The text component that we handle.
|
|
*/
|
|
JTextComponent textComponent;
|
|
|
|
/**
|
|
* Creates a new <code>BasicTextUI</code> instance.
|
|
*/
|
|
public BasicTextUI()
|
|
{
|
|
// Nothing to do here.
|
|
}
|
|
|
|
/**
|
|
* Creates a {@link Caret} that should be installed into the text component.
|
|
*
|
|
* @return a caret that should be installed into the text component
|
|
*/
|
|
protected Caret createCaret()
|
|
{
|
|
return new BasicCaret();
|
|
}
|
|
|
|
/**
|
|
* Creates a {@link Highlighter} that should be installed into the text
|
|
* component.
|
|
*
|
|
* @return a <code>Highlighter</code> for the text component
|
|
*/
|
|
protected Highlighter createHighlighter()
|
|
{
|
|
return new BasicHighlighter();
|
|
}
|
|
|
|
/**
|
|
* The text component that is managed by this UI.
|
|
*
|
|
* @return the text component that is managed by this UI
|
|
*/
|
|
protected final JTextComponent getComponent()
|
|
{
|
|
return textComponent;
|
|
}
|
|
|
|
/**
|
|
* Installs this UI on the text component.
|
|
*
|
|
* @param c the text component on which to install the UI
|
|
*/
|
|
public void installUI(final JComponent c)
|
|
{
|
|
textComponent = (JTextComponent) c;
|
|
|
|
if (rootView == null)
|
|
rootView = new RootView();
|
|
|
|
installDefaults();
|
|
installFixedDefaults();
|
|
|
|
// These listeners must be installed outside of installListeners(),
|
|
// because overriding installListeners() doesn't prevent installing
|
|
// these in the RI, but overriding isntallUI() does.
|
|
if (handler == null)
|
|
handler = new Handler();
|
|
textComponent.addPropertyChangeListener(handler);
|
|
Document doc = textComponent.getDocument();
|
|
if (doc == null)
|
|
{
|
|
// The Handler takes care of installing the necessary listeners
|
|
// on the document here.
|
|
doc = getEditorKit(textComponent).createDefaultDocument();
|
|
textComponent.setDocument(doc);
|
|
}
|
|
else
|
|
{
|
|
// Must install the document listener.
|
|
doc.addDocumentListener(handler);
|
|
modelChanged();
|
|
}
|
|
|
|
installListeners();
|
|
installKeyboardActions();
|
|
}
|
|
|
|
/**
|
|
* Installs UI defaults on the text components.
|
|
*/
|
|
protected void installDefaults()
|
|
{
|
|
String prefix = getPropertyPrefix();
|
|
// Install the standard properties.
|
|
LookAndFeel.installColorsAndFont(textComponent, prefix + ".background",
|
|
prefix + ".foreground", prefix + ".font");
|
|
LookAndFeel.installBorder(textComponent, prefix + ".border");
|
|
|
|
// Some additional text component only properties.
|
|
Color color = textComponent.getCaretColor();
|
|
if (color == null || color instanceof UIResource)
|
|
{
|
|
color = UIManager.getColor(prefix + ".caretForeground");
|
|
textComponent.setCaretColor(color);
|
|
}
|
|
|
|
// Fetch the colors for enabled/disabled text components.
|
|
color = textComponent.getDisabledTextColor();
|
|
if (color == null || color instanceof UIResource)
|
|
{
|
|
color = UIManager.getColor(prefix + ".inactiveForeground");
|
|
textComponent.setDisabledTextColor(color);
|
|
}
|
|
color = textComponent.getSelectedTextColor();
|
|
if (color == null || color instanceof UIResource)
|
|
{
|
|
color = UIManager.getColor(prefix + ".selectionForeground");
|
|
textComponent.setSelectedTextColor(color);
|
|
}
|
|
color = textComponent.getSelectionColor();
|
|
if (color == null || color instanceof UIResource)
|
|
{
|
|
color = UIManager.getColor(prefix + ".selectionBackground");
|
|
textComponent.setSelectionColor(color);
|
|
}
|
|
|
|
Insets margin = textComponent.getMargin();
|
|
if (margin == null || margin instanceof UIResource)
|
|
{
|
|
margin = UIManager.getInsets(prefix + ".margin");
|
|
textComponent.setMargin(margin);
|
|
}
|
|
|
|
}
|
|
|
|
/**
|
|
* Installs defaults that can't be overridden by overriding
|
|
* installDefaults().
|
|
*/
|
|
private void installFixedDefaults()
|
|
{
|
|
String prefix = getPropertyPrefix();
|
|
Caret caret = textComponent.getCaret();
|
|
if (caret == null || caret instanceof UIResource)
|
|
{
|
|
caret = createCaret();
|
|
textComponent.setCaret(caret);
|
|
caret.setBlinkRate(UIManager.getInt(prefix + ".caretBlinkRate"));
|
|
}
|
|
|
|
Highlighter highlighter = textComponent.getHighlighter();
|
|
if (highlighter == null || highlighter instanceof UIResource)
|
|
textComponent.setHighlighter(createHighlighter());
|
|
|
|
}
|
|
|
|
/**
|
|
* Install all listeners on the text component.
|
|
*/
|
|
protected void installListeners()
|
|
{
|
|
//
|
|
if (SystemProperties.getProperty("gnu.swing.text.no-xlike-clipboard")
|
|
== null)
|
|
{
|
|
if (focusListener == null)
|
|
focusListener = new FocusHandler();
|
|
textComponent.addFocusListener(focusListener);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns the name of the keymap for this type of TextUI.
|
|
*
|
|
* This is implemented so that the classname of this TextUI
|
|
* without the package prefix is returned. This way subclasses
|
|
* don't have to override this method.
|
|
*
|
|
* @return the name of the keymap for this TextUI
|
|
*/
|
|
protected String getKeymapName()
|
|
{
|
|
String fullClassName = getClass().getName();
|
|
int index = fullClassName.lastIndexOf('.');
|
|
String className = fullClassName.substring(index + 1);
|
|
return className;
|
|
}
|
|
|
|
/**
|
|
* Creates the {@link Keymap} that is installed on the text component.
|
|
*
|
|
* @return the {@link Keymap} that is installed on the text component
|
|
*/
|
|
protected Keymap createKeymap()
|
|
{
|
|
String keymapName = getKeymapName();
|
|
Keymap keymap = JTextComponent.getKeymap(keymapName);
|
|
if (keymap == null)
|
|
{
|
|
Keymap parentMap =
|
|
JTextComponent.getKeymap(JTextComponent.DEFAULT_KEYMAP);
|
|
keymap = JTextComponent.addKeymap(keymapName, parentMap);
|
|
Object val = UIManager.get(getPropertyPrefix() + ".keyBindings");
|
|
if (val != null && val instanceof JTextComponent.KeyBinding[])
|
|
{
|
|
JTextComponent.KeyBinding[] bindings =
|
|
(JTextComponent.KeyBinding[]) val;
|
|
JTextComponent.loadKeymap(keymap, bindings,
|
|
getComponent().getActions());
|
|
}
|
|
}
|
|
return keymap;
|
|
}
|
|
|
|
/**
|
|
* Installs the keyboard actions on the text components.
|
|
*/
|
|
protected void installKeyboardActions()
|
|
{
|
|
// This is only there for backwards compatibility.
|
|
textComponent.setKeymap(createKeymap());
|
|
|
|
// load any bindings for the newer InputMap / ActionMap interface
|
|
SwingUtilities.replaceUIInputMap(textComponent, JComponent.WHEN_FOCUSED,
|
|
getInputMap());
|
|
SwingUtilities.replaceUIActionMap(textComponent, getActionMap());
|
|
}
|
|
|
|
/**
|
|
* Creates an ActionMap to be installed on the text component.
|
|
*
|
|
* @return an ActionMap to be installed on the text component
|
|
*/
|
|
private ActionMap getActionMap()
|
|
{
|
|
// Note: There are no .actionMap entries in the standard L&Fs. However,
|
|
// with the RI it is possible to install action maps via such keys, so
|
|
// we must load them too. It can be observed that when there is no
|
|
// .actionMap entry in the UIManager, one gets installed after a text
|
|
// component of that type has been loaded.
|
|
String prefix = getPropertyPrefix();
|
|
String amName = prefix + ".actionMap";
|
|
ActionMap am = (ActionMap) UIManager.get(amName);
|
|
if (am == null)
|
|
{
|
|
am = createActionMap();
|
|
UIManager.put(amName, am);
|
|
}
|
|
|
|
ActionMap map = new ActionMapUIResource();
|
|
map.setParent(am);
|
|
|
|
return map;
|
|
}
|
|
|
|
/**
|
|
* Creates a default ActionMap for text components that have no UI default
|
|
* for this (the standard for the built-in L&Fs). The ActionMap is copied
|
|
* from the text component's getActions() method.
|
|
*
|
|
* @returna default ActionMap
|
|
*/
|
|
private ActionMap createActionMap()
|
|
{
|
|
ActionMap am = new ActionMapUIResource();
|
|
Action[] actions = textComponent.getActions();
|
|
for (int i = actions.length - 1; i >= 0; i--)
|
|
{
|
|
Action action = actions[i];
|
|
am.put(action.getValue(Action.NAME), action);
|
|
}
|
|
// Add TransferHandler's actions here. They don't seem to be in the
|
|
// JTextComponent's default actions, and I can't make up a better place
|
|
// to add them.
|
|
Action copyAction = TransferHandler.getCopyAction();
|
|
am.put(copyAction.getValue(Action.NAME), copyAction);
|
|
Action cutAction = TransferHandler.getCutAction();
|
|
am.put(cutAction.getValue(Action.NAME), cutAction);
|
|
Action pasteAction = TransferHandler.getPasteAction();
|
|
am.put(pasteAction.getValue(Action.NAME), pasteAction);
|
|
|
|
return am;
|
|
}
|
|
|
|
/**
|
|
* Gets the input map for the specified <code>condition</code>.
|
|
*
|
|
* @return the InputMap for the specified condition
|
|
*/
|
|
private InputMap getInputMap()
|
|
{
|
|
InputMap im = new InputMapUIResource();
|
|
String prefix = getPropertyPrefix();
|
|
InputMap shared =
|
|
(InputMap) SharedUIDefaults.get(prefix + ".focusInputMap");
|
|
if (shared != null)
|
|
im.setParent(shared);
|
|
return im;
|
|
}
|
|
|
|
/**
|
|
* Uninstalls this TextUI from the text component.
|
|
*
|
|
* @param component the text component to uninstall the UI from
|
|
*/
|
|
public void uninstallUI(final JComponent component)
|
|
{
|
|
textComponent.removePropertyChangeListener(handler);
|
|
textComponent.getDocument().removeDocumentListener(handler);
|
|
rootView.setView(null);
|
|
|
|
uninstallDefaults();
|
|
uninstallFixedDefaults();
|
|
uninstallListeners();
|
|
uninstallKeyboardActions();
|
|
|
|
textComponent = null;
|
|
}
|
|
|
|
/**
|
|
* Uninstalls all default properties that have previously been installed by
|
|
* this UI.
|
|
*/
|
|
protected void uninstallDefaults()
|
|
{
|
|
if (textComponent.getCaretColor() instanceof UIResource)
|
|
textComponent.setCaretColor(null);
|
|
if (textComponent.getSelectionColor() instanceof UIResource)
|
|
textComponent.setSelectionColor(null);
|
|
if (textComponent.getDisabledTextColor() instanceof UIResource)
|
|
textComponent.setDisabledTextColor(null);
|
|
if (textComponent.getSelectedTextColor() instanceof UIResource)
|
|
textComponent.setSelectedTextColor(null);
|
|
LookAndFeel.uninstallBorder(textComponent);
|
|
if (textComponent.getMargin() instanceof UIResource)
|
|
textComponent.setMargin(null);
|
|
}
|
|
|
|
/**
|
|
* Uninstalls additional fixed defaults that were installed
|
|
* by installFixedDefaults().
|
|
*/
|
|
private void uninstallFixedDefaults()
|
|
{
|
|
if (textComponent.getCaret() instanceof UIResource)
|
|
textComponent.setCaret(null);
|
|
if (textComponent.getHighlighter() instanceof UIResource)
|
|
textComponent.setHighlighter(null);
|
|
}
|
|
|
|
/**
|
|
* Uninstalls all listeners that have previously been installed by
|
|
* this UI.
|
|
*/
|
|
protected void uninstallListeners()
|
|
{
|
|
// Don't nullify the focusListener field, as it is static and shared
|
|
// between components.
|
|
if (focusListener != null)
|
|
textComponent.removeFocusListener(focusListener);
|
|
}
|
|
|
|
/**
|
|
* Uninstalls all keyboard actions that have previously been installed by
|
|
* this UI.
|
|
*/
|
|
protected void uninstallKeyboardActions()
|
|
{
|
|
SwingUtilities.replaceUIInputMap(textComponent, JComponent.WHEN_FOCUSED,
|
|
null);
|
|
SwingUtilities.replaceUIActionMap(textComponent, null);
|
|
}
|
|
|
|
/**
|
|
* Returns the property prefix by which the text component's UIDefaults
|
|
* are looked up.
|
|
*
|
|
* @return the property prefix by which the text component's UIDefaults
|
|
* are looked up
|
|
*/
|
|
protected abstract String getPropertyPrefix();
|
|
|
|
/**
|
|
* Returns the preferred size of the text component.
|
|
*
|
|
* @param c not used here
|
|
*
|
|
* @return the preferred size of the text component
|
|
*/
|
|
public Dimension getPreferredSize(JComponent c)
|
|
{
|
|
Dimension d = c.getSize();
|
|
Insets i = c.getInsets();
|
|
// We need to lock here, since we require the view hierarchy to _not_
|
|
// change in between.
|
|
float w;
|
|
float h;
|
|
Document doc = textComponent.getDocument();
|
|
if (doc instanceof AbstractDocument)
|
|
((AbstractDocument) doc).readLock();
|
|
try
|
|
{
|
|
if (d.width > (i.left + i.right) && d.height > (i.top + i.bottom))
|
|
{
|
|
rootView.setSize(d.width - i.left - i.right,
|
|
d.height - i.top - i.bottom);
|
|
}
|
|
else
|
|
{
|
|
// Not laid out yet. Force some pseudo size.
|
|
rootView.setSize(Integer.MAX_VALUE, Integer.MAX_VALUE);
|
|
}
|
|
w = rootView.getPreferredSpan(View.X_AXIS);
|
|
h = rootView.getPreferredSpan(View.Y_AXIS);
|
|
}
|
|
finally
|
|
{
|
|
if (doc instanceof AbstractDocument)
|
|
((AbstractDocument) doc).readUnlock();
|
|
}
|
|
Dimension size = new Dimension((int) w + i.left + i.right,
|
|
(int) h + i.top + i.bottom);
|
|
return size;
|
|
}
|
|
|
|
/**
|
|
* Returns the maximum size for text components that use this UI.
|
|
*
|
|
* This returns (Integer.MAX_VALUE, Integer.MAX_VALUE).
|
|
*
|
|
* @param c not used here
|
|
*
|
|
* @return the maximum size for text components that use this UI
|
|
*/
|
|
public Dimension getMaximumSize(JComponent c)
|
|
{
|
|
Dimension d = new Dimension();
|
|
Insets i = c.getInsets();
|
|
Document doc = textComponent.getDocument();
|
|
// We need to lock here, since we require the view hierarchy to _not_
|
|
// change in between.
|
|
if (doc instanceof AbstractDocument)
|
|
((AbstractDocument) doc).readLock();
|
|
try
|
|
{
|
|
// Check for overflow here.
|
|
d.width = (int) Math.min((long) rootView.getMaximumSpan(View.X_AXIS)
|
|
+ i.left + i.right, Integer.MAX_VALUE);
|
|
d.height = (int) Math.min((long) rootView.getMaximumSpan(View.Y_AXIS)
|
|
+ i.top + i.bottom, Integer.MAX_VALUE);
|
|
}
|
|
finally
|
|
{
|
|
if (doc instanceof AbstractDocument)
|
|
((AbstractDocument) doc).readUnlock();
|
|
}
|
|
return d;
|
|
}
|
|
|
|
/**
|
|
* Returns the minimum size for text components. This returns the size
|
|
* of the component's insets.
|
|
*
|
|
* @return the minimum size for text components
|
|
*/
|
|
public Dimension getMinimumSize(JComponent c)
|
|
{
|
|
Dimension d = new Dimension();
|
|
Document doc = textComponent.getDocument();
|
|
// We need to lock here, since we require the view hierarchy to _not_
|
|
// change in between.
|
|
if (doc instanceof AbstractDocument)
|
|
((AbstractDocument) doc).readLock();
|
|
try
|
|
{
|
|
d.width = (int) rootView.getMinimumSpan(View.X_AXIS);
|
|
d.height = (int) rootView.getMinimumSpan(View.Y_AXIS);
|
|
}
|
|
finally
|
|
{
|
|
if (doc instanceof AbstractDocument)
|
|
((AbstractDocument) doc).readUnlock();
|
|
}
|
|
Insets i = c.getInsets();
|
|
d.width += i.left + i.right;
|
|
d.height += i.top + i.bottom;
|
|
return d;
|
|
}
|
|
|
|
/**
|
|
* Paints the text component. This acquires a read lock on the model and then
|
|
* calls {@link #paintSafely(Graphics)} in order to actually perform the
|
|
* painting.
|
|
*
|
|
* @param g the <code>Graphics</code> context to paint to
|
|
* @param c not used here
|
|
*/
|
|
public final void paint(Graphics g, JComponent c)
|
|
{
|
|
try
|
|
{
|
|
Document doc = textComponent.getDocument();
|
|
if (doc instanceof AbstractDocument)
|
|
{
|
|
AbstractDocument aDoc = (AbstractDocument) doc;
|
|
aDoc.readLock();
|
|
}
|
|
paintSafely(g);
|
|
}
|
|
finally
|
|
{
|
|
Document doc = textComponent.getDocument();
|
|
if (doc instanceof AbstractDocument)
|
|
{
|
|
AbstractDocument aDoc = (AbstractDocument) doc;
|
|
aDoc.readUnlock();
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* This paints the text component while beeing sure that the model is not
|
|
* modified while painting.
|
|
*
|
|
* The following is performed in this order:
|
|
* <ol>
|
|
* <li>If the text component is opaque, the background is painted by
|
|
* calling {@link #paintBackground(Graphics)}.</li>
|
|
* <li>If there is a highlighter, the highlighter is painted.</li>
|
|
* <li>The view hierarchy is painted.</li>
|
|
* <li>The Caret is painter.</li>
|
|
* </ol>
|
|
*
|
|
* @param g the <code>Graphics</code> context to paint to
|
|
*/
|
|
protected void paintSafely(Graphics g)
|
|
{
|
|
Caret caret = textComponent.getCaret();
|
|
Highlighter highlighter = textComponent.getHighlighter();
|
|
|
|
if (textComponent.isOpaque())
|
|
paintBackground(g);
|
|
|
|
// Try painting with the highlighter without checking whether there
|
|
// is a selection because a highlighter can be used to do more than
|
|
// marking selected text.
|
|
if (highlighter != null)
|
|
{
|
|
// Handle restoring of the color here to prevent
|
|
// drawing problems when the Highlighter implementor
|
|
// forgets to restore it.
|
|
Color oldColor = g.getColor();
|
|
highlighter.paint(g);
|
|
g.setColor(oldColor);
|
|
}
|
|
|
|
rootView.paint(g, getVisibleEditorRect());
|
|
|
|
if (caret != null && textComponent.hasFocus())
|
|
caret.paint(g);
|
|
}
|
|
|
|
/**
|
|
* Paints the background of the text component.
|
|
*
|
|
* @param g the <code>Graphics</code> context to paint to
|
|
*/
|
|
protected void paintBackground(Graphics g)
|
|
{
|
|
Color old = g.getColor();
|
|
g.setColor(textComponent.getBackground());
|
|
g.fillRect(0, 0, textComponent.getWidth(), textComponent.getHeight());
|
|
g.setColor(old);
|
|
}
|
|
|
|
/**
|
|
* Overridden for better control over background painting. This now simply
|
|
* calls {@link #paint} and this delegates the background painting to
|
|
* {@link #paintBackground}.
|
|
*
|
|
* @param g the graphics to use
|
|
* @param c the component to be painted
|
|
*/
|
|
public void update(Graphics g, JComponent c)
|
|
{
|
|
paint(g, c);
|
|
}
|
|
|
|
/**
|
|
* Marks the specified range inside the text component's model as
|
|
* damaged and queues a repaint request.
|
|
*
|
|
* @param t the text component
|
|
* @param p0 the start location inside the document model of the range that
|
|
* is damaged
|
|
* @param p1 the end location inside the document model of the range that
|
|
* is damaged
|
|
*/
|
|
public void damageRange(JTextComponent t, int p0, int p1)
|
|
{
|
|
damageRange(t, p0, p1, Position.Bias.Forward, Position.Bias.Backward);
|
|
}
|
|
|
|
/**
|
|
* Marks the specified range inside the text component's model as
|
|
* damaged and queues a repaint request. This variant of this method
|
|
* allows a {@link Position.Bias} object to be specified for the start
|
|
* and end location of the range.
|
|
*
|
|
* @param t the text component
|
|
* @param p0 the start location inside the document model of the range that
|
|
* is damaged
|
|
* @param p1 the end location inside the document model of the range that
|
|
* is damaged
|
|
* @param firstBias the bias for the start location
|
|
* @param secondBias the bias for the end location
|
|
*/
|
|
public void damageRange(JTextComponent t, int p0, int p1,
|
|
Position.Bias firstBias, Position.Bias secondBias)
|
|
{
|
|
Rectangle alloc = getVisibleEditorRect();
|
|
if (alloc != null)
|
|
{
|
|
Document doc = t.getDocument();
|
|
|
|
// Acquire lock here to avoid structural changes in between.
|
|
if (doc instanceof AbstractDocument)
|
|
((AbstractDocument) doc).readLock();
|
|
try
|
|
{
|
|
rootView.setSize(alloc.width, alloc.height);
|
|
Shape damage = rootView.modelToView(p0, firstBias, p1, secondBias,
|
|
alloc);
|
|
Rectangle r = damage instanceof Rectangle ? (Rectangle) damage
|
|
: damage.getBounds();
|
|
textComponent.repaint(r.x, r.y, r.width, r.height);
|
|
}
|
|
catch (BadLocationException ex)
|
|
{
|
|
// Lets ignore this as it causes no serious problems.
|
|
// For debugging, comment this out.
|
|
// ex.printStackTrace();
|
|
}
|
|
finally
|
|
{
|
|
// Release lock.
|
|
if (doc instanceof AbstractDocument)
|
|
((AbstractDocument) doc).readUnlock();
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns the {@link EditorKit} used for the text component that is managed
|
|
* by this UI.
|
|
*
|
|
* @param t the text component
|
|
*
|
|
* @return the {@link EditorKit} used for the text component that is managed
|
|
* by this UI
|
|
*/
|
|
public EditorKit getEditorKit(JTextComponent t)
|
|
{
|
|
if (kit == null)
|
|
kit = new DefaultEditorKit();
|
|
return kit;
|
|
}
|
|
|
|
/**
|
|
* Gets the next position inside the document model that is visible on
|
|
* screen, starting from <code>pos</code>.
|
|
*
|
|
* @param t the text component
|
|
* @param pos the start positionn
|
|
* @param b the bias for pos
|
|
* @param direction the search direction
|
|
* @param biasRet filled by the method to indicate the bias of the return
|
|
* value
|
|
*
|
|
* @return the next position inside the document model that is visible on
|
|
* screen
|
|
*/
|
|
public int getNextVisualPositionFrom(JTextComponent t, int pos,
|
|
Position.Bias b, int direction,
|
|
Position.Bias[] biasRet)
|
|
throws BadLocationException
|
|
{
|
|
int offset = -1;
|
|
Document doc = textComponent.getDocument();
|
|
if (doc instanceof AbstractDocument)
|
|
((AbstractDocument) doc).readLock();
|
|
try
|
|
{
|
|
Rectangle alloc = getVisibleEditorRect();
|
|
if (alloc != null)
|
|
{
|
|
rootView.setSize(alloc.width, alloc.height);
|
|
offset = rootView.getNextVisualPositionFrom(pos, b, alloc,
|
|
direction, biasRet);
|
|
}
|
|
}
|
|
finally
|
|
{
|
|
if (doc instanceof AbstractDocument)
|
|
((AbstractDocument) doc).readUnlock();
|
|
}
|
|
return offset;
|
|
}
|
|
|
|
/**
|
|
* Returns the root {@link View} of a text component.
|
|
*
|
|
* @return the root {@link View} of a text component
|
|
*/
|
|
public View getRootView(JTextComponent t)
|
|
{
|
|
return rootView;
|
|
}
|
|
|
|
/**
|
|
* Maps a position in the document into the coordinate space of the View.
|
|
* The output rectangle usually reflects the font height but has a width
|
|
* of zero. A bias of {@link Position.Bias#Forward} is used in this method.
|
|
*
|
|
* @param t the text component
|
|
* @param pos the position of the character in the model
|
|
*
|
|
* @return a rectangle that gives the location of the document position
|
|
* inside the view coordinate space
|
|
*
|
|
* @throws BadLocationException if <code>pos</code> is invalid
|
|
* @throws IllegalArgumentException if b is not one of the above listed
|
|
* valid values
|
|
*/
|
|
public Rectangle modelToView(JTextComponent t, int pos)
|
|
throws BadLocationException
|
|
{
|
|
return modelToView(t, pos, Position.Bias.Forward);
|
|
}
|
|
|
|
/**
|
|
* Maps a position in the document into the coordinate space of the View.
|
|
* The output rectangle usually reflects the font height but has a width
|
|
* of zero.
|
|
*
|
|
* @param t the text component
|
|
* @param pos the position of the character in the model
|
|
* @param bias either {@link Position.Bias#Forward} or
|
|
* {@link Position.Bias#Backward} depending on the preferred
|
|
* direction bias. If <code>null</code> this defaults to
|
|
* <code>Position.Bias.Forward</code>
|
|
*
|
|
* @return a rectangle that gives the location of the document position
|
|
* inside the view coordinate space
|
|
*
|
|
* @throws BadLocationException if <code>pos</code> is invalid
|
|
* @throws IllegalArgumentException if b is not one of the above listed
|
|
* valid values
|
|
*/
|
|
public Rectangle modelToView(JTextComponent t, int pos, Position.Bias bias)
|
|
throws BadLocationException
|
|
{
|
|
// We need to read-lock here because we depend on the document
|
|
// structure not beeing changed in between.
|
|
Document doc = textComponent.getDocument();
|
|
if (doc instanceof AbstractDocument)
|
|
((AbstractDocument) doc).readLock();
|
|
Rectangle rect = null;
|
|
try
|
|
{
|
|
Rectangle r = getVisibleEditorRect();
|
|
if (r != null)
|
|
{
|
|
rootView.setSize(r.width, r.height);
|
|
Shape s = rootView.modelToView(pos, r, bias);
|
|
if (s != null)
|
|
rect = s.getBounds();
|
|
}
|
|
}
|
|
finally
|
|
{
|
|
if (doc instanceof AbstractDocument)
|
|
((AbstractDocument) doc).readUnlock();
|
|
}
|
|
return rect;
|
|
}
|
|
|
|
/**
|
|
* Maps a point in the <code>View</code> coordinate space to a position
|
|
* inside a document model.
|
|
*
|
|
* @param t the text component
|
|
* @param pt the point to be mapped
|
|
*
|
|
* @return the position inside the document model that corresponds to
|
|
* <code>pt</code>
|
|
*/
|
|
public int viewToModel(JTextComponent t, Point pt)
|
|
{
|
|
return viewToModel(t, pt, new Position.Bias[1]);
|
|
}
|
|
|
|
/**
|
|
* Maps a point in the <code>View</code> coordinate space to a position
|
|
* inside a document model.
|
|
*
|
|
* @param t the text component
|
|
* @param pt the point to be mapped
|
|
* @param biasReturn filled in by the method to indicate the bias of the
|
|
* return value
|
|
*
|
|
* @return the position inside the document model that corresponds to
|
|
* <code>pt</code>
|
|
*/
|
|
public int viewToModel(JTextComponent t, Point pt, Position.Bias[] biasReturn)
|
|
{
|
|
int offset = -1;
|
|
Document doc = textComponent.getDocument();
|
|
if (doc instanceof AbstractDocument)
|
|
((AbstractDocument) doc).readLock();
|
|
try
|
|
{
|
|
Rectangle alloc = getVisibleEditorRect();
|
|
if (alloc != null)
|
|
{
|
|
rootView.setSize(alloc.width, alloc.height);
|
|
offset = rootView.viewToModel(pt.x, pt.y, alloc, biasReturn);
|
|
}
|
|
}
|
|
finally
|
|
{
|
|
if (doc instanceof AbstractDocument)
|
|
((AbstractDocument) doc).readUnlock();
|
|
}
|
|
return offset;
|
|
}
|
|
|
|
/**
|
|
* Creates a {@link View} for the specified {@link Element}.
|
|
*
|
|
* @param elem the <code>Element</code> to create a <code>View</code> for
|
|
*
|
|
* @see ViewFactory
|
|
*/
|
|
public View create(Element elem)
|
|
{
|
|
// Subclasses have to implement this to get this functionality.
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Creates a {@link View} for the specified {@link Element}.
|
|
*
|
|
* @param elem the <code>Element</code> to create a <code>View</code> for
|
|
* @param p0 the start offset
|
|
* @param p1 the end offset
|
|
*
|
|
* @see ViewFactory
|
|
*/
|
|
public View create(Element elem, int p0, int p1)
|
|
{
|
|
// Subclasses have to implement this to get this functionality.
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* A cached Insets instance to be reused below.
|
|
*/
|
|
private Insets cachedInsets;
|
|
|
|
/**
|
|
* Returns the allocation to give the root view.
|
|
*
|
|
* @return the allocation to give the root view
|
|
*
|
|
* @specnote The allocation has nothing to do with visibility. According
|
|
* to the specs the naming of this method is unfortunate and
|
|
* has historical reasons
|
|
*/
|
|
protected Rectangle getVisibleEditorRect()
|
|
{
|
|
int width = textComponent.getWidth();
|
|
int height = textComponent.getHeight();
|
|
|
|
// Return null if the component has no valid size.
|
|
if (width <= 0 || height <= 0)
|
|
return null;
|
|
|
|
Insets insets = textComponent.getInsets(cachedInsets);
|
|
return new Rectangle(insets.left, insets.top,
|
|
width - insets.left - insets.right,
|
|
height - insets.top - insets.bottom);
|
|
}
|
|
|
|
/**
|
|
* Sets the root view for the text component.
|
|
*
|
|
* @param view the <code>View</code> to be set as root view
|
|
*/
|
|
protected final void setView(View view)
|
|
{
|
|
rootView.setView(view);
|
|
textComponent.revalidate();
|
|
textComponent.repaint();
|
|
}
|
|
|
|
/**
|
|
* Indicates that the model of a text component has changed. This
|
|
* triggers a rebuild of the view hierarchy.
|
|
*/
|
|
protected void modelChanged()
|
|
{
|
|
if (textComponent == null || rootView == null)
|
|
return;
|
|
ViewFactory factory = rootView.getViewFactory();
|
|
if (factory == null)
|
|
return;
|
|
Document doc = textComponent.getDocument();
|
|
if (doc == null)
|
|
return;
|
|
Element elem = doc.getDefaultRootElement();
|
|
if (elem == null)
|
|
return;
|
|
View view = factory.create(elem);
|
|
setView(view);
|
|
}
|
|
|
|
/**
|
|
* Receives notification whenever one of the text component's bound
|
|
* properties changes. This default implementation does nothing.
|
|
* It is a hook that enables subclasses to react to property changes
|
|
* on the text component.
|
|
*
|
|
* @param ev the property change event
|
|
*/
|
|
protected void propertyChange(PropertyChangeEvent ev)
|
|
{
|
|
// The default implementation does nothing.
|
|
}
|
|
|
|
}
|