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/* getPreferredSize.java -- Tests the getPreferredSize() method
Copyright (C) 2006 Roman Kennke (kennke@aicas.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.
*/
// Tags: JDK1.1
package gnu.testlet.java.awt.Container;
import java.awt.Component;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.LayoutManager2;
import gnu.testlet.TestHarness;
import gnu.testlet.Testlet;
/**
* Tests the getPreferredSize method.
*
* @author Roman Kennke (kennke@aicas.com)
*/
public class getPreferredSize implements Testlet
{
/**
* Indicates if invalideLayout has been called on the layout manager or
* not.
*/
boolean invalidateCalled;
/**
* A layout manager used for testing.
*
* @author Roman Kennke (kennke@aicas.com)
*/
class TestLM implements LayoutManager2
{
public void addLayoutComponent(Component component, Object constraints)
{
// Nothing to do here.
}
public Dimension maximumLayoutSize(Container target)
{
// Nothing to do here.
return null;
}
public float getLayoutAlignmentX(Container target)
{
// Nothing to do here.
return 0;
}
public float getLayoutAlignmentY(Container target)
{
// Nothing to do here.
return 0;
}
public void invalidateLayout(Container target)
{
invalidateCalled = true;
}
public void addLayoutComponent(String name, Component component)
{
// Nothing to do here.
}
public void removeLayoutComponent(Component component)
{
// Nothing to do here.
}
public Dimension preferredLayoutSize(Container parent)
{
return new Dimension(100, 100);
}
public Dimension minimumLayoutSize(Container parent)
{
// Nothing to do here.
return null;
}
public void layoutContainer(Container parent)
{
// Nothing to do here.
}
}
/**
* The entry point into the test.
*/
public void test(TestHarness harness)
{
testInvalid(harness);
}
/**
* Tests if the container should call invalidateLayout() before asking the
* preferredSize from a layout manager. The background is that in theory
* this could lead to wrong value for preferredSize, when a layout manager
* caches the preferredSize.
*
* @param harness the test harness to use
*/
private void testInvalid(TestHarness harness)
{
Container c = new Container();
LayoutManager2 lm = new TestLM();
c.setLayout(lm);
c.invalidate();
invalidateCalled = false;
c.getPreferredSize();
c.getPreferredSize();
harness.check(invalidateCalled, false);
}
}
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