com.codename1.ui.layouts.mig.LayoutCallback Maven / Gradle / Ivy
package com.codename1.ui.layouts.mig;
/*
* License (BSD):
* ==============
*
* Copyright (c) 2004, Mikael Grev, MiG InfoCom AB. (miglayout (at) miginfocom (dot) com)
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice, this list
* of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice, this
* list of conditions and the following disclaimer in the documentation and/or other
* materials provided with the distribution.
* Neither the name of the MiG InfoCom AB nor the names of its contributors may be
* used to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*
* @version 1.0
* @author Mikael Grev, MiG InfoCom AB
* Date: 2006-sep-08
*/
/** A class to extend if you want to provide more control over where a component is placed or the size of it.
*
* Note! Returned arrays from this class will never be altered. This means that caching of arrays in these methods
* is OK.
*/
public abstract class LayoutCallback
{
/** Returns a position similar to the "pos" the component constraint.
* @param comp The component wrapper that holds the actual component (JComponent is Swing and Control in SWT).
* Should not be altered.
* @return The [x, y, x2, y2] as explained in the documentation for "pos". If null
* is returned nothing is done and this is the default.
* @see UnitValue
* @see net.miginfocom.layout.ConstraintParser#parseUnitValue(String, boolean)
*/
public UnitValue[] getPosition(ComponentWrapper comp)
{
return null;
}
/** Returns a size similar to the "width" and "height" in the component constraint.
* @param comp The component wrapper that holds the actual component (JComponent is Swing and Control in SWT).
* Should not be altered.
* @return The [width, height] as explained in the documentation for "width" and "height". If null
* is returned nothing is done and this is the default.
* @see net.miginfocom.layout.BoundSize
* @see net.miginfocom.layout.ConstraintParser#parseBoundSize(String, boolean, boolean)
*/
public BoundSize[] getSize(ComponentWrapper comp)
{
return null;
}
/** A last minute change of the bounds. The bound for the layout cycle has been set and you can correct there
* after any set of rules you like.
* @param comp The component wrapper that holds the actual component (JComponent is Swing and Control in SWT).
*/
public void correctBounds(ComponentWrapper comp)
{
}
}