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java.awt

Interface LayoutManager2

All Superinterfaces:
LayoutManager
Known Implementing Classes:
BasicSplitPaneUI.BasicHorizontalLayoutManager, BasicSplitPaneUI.BasicVerticalLayoutManager, BorderLayout, BoxLayout, CardLayout, DefaultMenuLayout, GridBagLayout, JRootPane.RootLayout, OverlayLayout, SpringLayout
public interface LayoutManager2
extends LayoutManager
Layout manager for laying out containers based on contraints. The constraints control how the layout will proceed.
Since:
1.0
See Also:
LayoutManager, Container

Method Summary

void
addLayoutComponent(Component component, Object constraints)
Adds the specified component to the layout, with the specified constraints object.
float
getLayoutAlignmentX(Container target)
Returns the preferred X axis alignment for the specified target container.
float
getLayoutAlignmentY(Container target)
Returns the preferred Y axis alignment for the specified target container.
void
invalidateLayout(Container target)
Forces the layout manager to purge any cached information about the layout of the target container.
Dimension
maximumLayoutSize(Container target)
Determines the maximum size of the specified target container.

Methods inherited from interface java.awt.LayoutManager

addLayoutComponent, layoutContainer, minimumLayoutSize, preferredLayoutSize, removeLayoutComponent

Method Details

addLayoutComponent

public void addLayoutComponent(Component component,
                               Object constraints)
Adds the specified component to the layout, with the specified constraints object.
Parameters:
component - the component to add
constraints - the constraints to satisfy

getLayoutAlignmentX

public float getLayoutAlignmentX(Container target)
Returns the preferred X axis alignment for the specified target container. This value will range from 0 to 1 where 0 is alignment closest to the origin, 0.5 is centered, and 1 is aligned furthest from the origin.
Parameters:
target - the target container
Returns:
the x-axis alignment preference

getLayoutAlignmentY

public float getLayoutAlignmentY(Container target)
Returns the preferred Y axis alignment for the specified target container. This value will range from 0 to 1 where 0 is alignment closest to the origin, 0.5 is centered, and 1 is aligned furthest from the origin.
Parameters:
target - the target container
Returns:
the y-axis alignment preference

invalidateLayout

public void invalidateLayout(Container target)
Forces the layout manager to purge any cached information about the layout of the target container. This will force it to be recalculated.
Parameters:
target - the target container

maximumLayoutSize

public Dimension maximumLayoutSize(Container target)
Determines the maximum size of the specified target container.
Parameters:
target - the container to lay out
Returns:
the maximum size of the container
See Also:
Component.getMaximumSize()
LayoutManager2.java -- enhanced layout manager Copyright (C) 1999, 2002 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.

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