// Tags: JDK1.2
// Uses: MyMetalComboBoxUI ../../basic/BasicComboBoxUI/MyBasicComboBoxUI
// Copyright (C) 2005, 2006 David Gilbert <david.gilbert@object-refinery.com>
// This file is part of Mauve.
// Mauve 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.
// Mauve 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 Mauve; see the file COPYING. If not, write to
// the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
// Boston, MA 02110-1301 USA.
package gnu.testlet.javax.swing.plaf.metal.MetalComboBoxUI;
import gnu.testlet.TestHarness;
import gnu.testlet.Testlet;
import gnu.testlet.javax.swing.plaf.TestLookAndFeel;
import gnu.testlet.javax.swing.plaf.basic.BasicComboBoxUI.MyBasicComboBoxUI;
import java.awt.Dimension;
import java.awt.FontMetrics;
import javax.swing.JComboBox;
import javax.swing.JTextField;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.plaf.metal.DefaultMetalTheme;
import javax.swing.plaf.metal.MetalComboBoxUI;
import javax.swing.plaf.metal.MetalLookAndFeel;
/**
* Some checks for the getDisplaySize() method in the
* {@link MetalComboBoxUI} class. This is an inherited method.
*/
public class getDisplaySize implements Testlet
{
/**
* Runs the test using the specified harness.
*
* @param harness the test harness (<code>null</code> not permitted).
*/
public void test(TestHarness harness)
{
testNotEditable(harness);
testEditable(harness);
}
/**
* Run some checks for a JComboBox that is not editable.
*
* @param harness the test harness.
*/
private void testNotEditable(TestHarness harness)
{
try
{
MetalLookAndFeel.setCurrentTheme(new DefaultMetalTheme());
UIManager.setLookAndFeel(new MetalLookAndFeel());
}
catch (UnsupportedLookAndFeelException e)
{
e.printStackTrace();
}
JComboBox cb = new JComboBox();
MyMetalComboBoxUI ui = new MyMetalComboBoxUI();
cb.setUI(ui);
int additionalHeight = 2; // margin? border?
int additionalWidth = 2;
FontMetrics fm = cb.getFontMetrics(cb.getFont());
// the following width calculation is a guess. We know the value
// depends on the font size, and that it is relatively small, so after
// trying out a few candidates this one seems to give the right result
int width = fm.charWidth(' ') + additionalWidth;
int height = fm.getHeight() + additionalHeight;
harness.check(ui.getDisplaySize(), new Dimension(width, height));
cb.addItem("ABC");
width = fm.stringWidth("ABC") + additionalWidth;
harness.check(ui.getDisplaySize(), new Dimension(width, height));
cb.addItem("A longer item");
width = fm.stringWidth("A longer item") + additionalWidth;
harness.check(ui.getDisplaySize(), new Dimension(width, height));
cb.setPrototypeDisplayValue("Prototype");
width = fm.stringWidth("Prototype") + additionalWidth;
harness.check(ui.getDisplaySize(), new Dimension(width, height));
}
/**
* Run some checks for a JComboBox that is editable.
*
* @param harness the test harness.
*/
private void testEditable(TestHarness harness)
{
try
{
UIManager.setLookAndFeel(new TestLookAndFeel());
}
catch (UnsupportedLookAndFeelException e)
{
e.printStackTrace();
}
JComboBox cb = new JComboBox();
cb.setEditable(true);
MyBasicComboBoxUI ui = new MyBasicComboBoxUI();
cb.setUI(ui);
JTextField tf = (JTextField) cb.getEditor().getEditorComponent();
int columns = tf.getColumns();
FontMetrics fm = cb.getFontMetrics(cb.getFont());
// for an editable JComboBox the display size is calculated from the
// preferred size of the JTextField it seems, or the prototype display
// value in some cases...
int width = fm.charWidth('m') * columns;
int height = fm.getHeight() + 2; // the 2 seems to be a fixed margin
// not sure why the width here needs + 1..
harness.check(ui.getDisplaySize(), new Dimension(width + 1, height));
cb.addItem("ABC");
harness.check(ui.getDisplaySize(), new Dimension(width, height));
cb.addItem("A longer item");
harness.check(ui.getDisplaySize(), new Dimension(width, height));
cb.setPrototypeDisplayValue("Prototype");
harness.check(ui.getDisplaySize(), new Dimension(width, height));
cb.setPrototypeDisplayValue("Long Prototype Display Value");
width = fm.stringWidth("Long Prototype Display Value") + 2;
harness.check(ui.getDisplaySize(), new Dimension(width, height));
// restore a sane look and feel
try
{
UIManager.setLookAndFeel(new MetalLookAndFeel());
}
catch (Exception e)
{
e.printStackTrace();
}
}
}