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* Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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package com.sun.java.swing.plaf.windows;
import java.awt.*;
import java.awt.event.*;
import java.beans.PropertyChangeEvent;
import javax.swing.plaf.*;
import javax.swing.plaf.basic.BasicTextFieldUI;
import javax.swing.text.*;
import javax.swing.*;
import javax.swing.plaf.UIResource;
import sun.swing.DefaultLookup;
/**
* Provides the Windows look and feel for a text field. This
* is basically the following customizations to the default
* look-and-feel.
* <ul>
* <li>The border is beveled (using the standard control color).
* <li>The background is white by default.
* <li>The highlight color is a dark color, blue by default.
* <li>The foreground color is high contrast in the selected
* area, white by default. The unselected foreground is black.
* <li>The cursor blinks at about 1/2 second intervals.
* <li>The entire value is selected when focus is gained.
* <li>Shift-left-arrow and shift-right-arrow extend selection
* <li>Ctrl-left-arrow and ctrl-right-arrow act like home and
* end respectively.
* </ul>
* <p>
* <strong>Warning:</strong>
* Serialized objects of this class will not be compatible with
* future Swing releases. The current serialization support is appropriate
* for short term storage or RMI between applications running the same
* version of Swing. A future release of Swing will provide support for
* long term persistence.
*
* @author Timothy Prinzing
*/
public class WindowsTextFieldUI extends BasicTextFieldUI
{
/**
* Creates a UI for a JTextField.
*
* @param c the text field
* @return the UI
*/
public static ComponentUI createUI(JComponent c) {
return new WindowsTextFieldUI();
}
/**
* Paints a background for the view. This will only be
* called if isOpaque() on the associated component is
* true. The default is to paint the background color
* of the component.
*
* @param g the graphics context
*/
protected void paintBackground(Graphics g) {
super.paintBackground(g);
}
/**
* Creates the caret for a field.
*
* @return the caret
*/
protected Caret createCaret() {
return new WindowsFieldCaret();
}
/**
* WindowsFieldCaret has different scrolling behavior than
* DefaultCaret.
*/
@SuppressWarnings("serial") // Superclass is not serializable across versions
static class WindowsFieldCaret extends DefaultCaret implements UIResource {
public WindowsFieldCaret() {
super();
}
/**
* Adjusts the visibility of the caret according to
* the windows feel which seems to be to move the
* caret out into the field by about a quarter of
* a field length if not visible.
*/
protected void adjustVisibility(Rectangle r) {
SwingUtilities.invokeLater(new SafeScroller(r));
}
/**
* Gets the painter for the Highlighter.
*
* @return the painter
*/
protected Highlighter.HighlightPainter getSelectionPainter() {
return WindowsTextUI.WindowsPainter;
}
private class SafeScroller implements Runnable {
SafeScroller(Rectangle r) {
this.r = r;
}
@SuppressWarnings("deprecation")
public void run() {
JTextField field = (JTextField) getComponent();
if (field != null) {
TextUI ui = field.getUI();
int dot = getDot();
// PENDING: We need to expose the bias in DefaultCaret.
Position.Bias bias = Position.Bias.Forward;
Rectangle startRect = null;
try {
startRect = ui.modelToView(field, dot, bias);
} catch (BadLocationException ble) {}
Insets i = field.getInsets();
BoundedRangeModel vis = field.getHorizontalVisibility();
int x = r.x + vis.getValue() - i.left;
int quarterSpan = vis.getExtent() / 4;
if (r.x < i.left) {
vis.setValue(x - quarterSpan);
} else if (r.x + r.width > i.left + vis.getExtent()) {
vis.setValue(x - (3 * quarterSpan));
}
// If we scroll, our visual location will have changed,
// but we won't have updated our internal location as
// the model hasn't changed. This checks for the change,
// and if necessary, resets the internal location.
if (startRect != null) {
try {
Rectangle endRect;
endRect = ui.modelToView(field, dot, bias);
if (endRect != null && !endRect.equals(startRect)){
damage(endRect);
}
} catch (BadLocationException ble) {}
}
}
}
private Rectangle r;
}
}
}