Coverage Report

Coverage Report - net.miginfocom.layout.AC

Classes in this File
1.528
 package net.miginfocom.layout;
 
 import java.io.*;
 import java.util.ArrayList;
 
 /*
  * 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 constraint that holds the column <b>or</b> row constraints for the grid. It also holds the gaps between the rows and columns.
  * <p>
  * This class is a holder and builder for a number of {@link net.miginfocom.layout.DimConstraint}s.
  * <p>
  * For a more thorough explanation of what these constraints do, and how to build the constraints, see the White Paper or Cheat Sheet at www.migcomponents.com.
  * <p>
  * Note that there are two way to build this constraint. Through String (e.g. <code>"[100]3[200,fill]"</code> or through API (E.g.
  * <code>new AxisConstraint().size("100").gap("3").size("200").fill()</code>.
  */
 public final class AC implements Externalizable
 {
         private final ArrayList<DimConstraint> cList = new ArrayList<DimConstraint>(8);
 
         private transient int curIx = 0;
 
         /** Constructor. Creates an instance that can be configured manually. Will be initialized with a default
          * {@link net.miginfocom.layout.DimConstraint}.
          */
         public AC()
         {
                 cList.add(new DimConstraint());
         }
 
         /** Property. The different {@link net.miginfocom.layout.DimConstraint}s that this object consists of.
          * These <code><DimConstraints/code> contains all information in this class.
          * <p>
          * Yes, we are embarrassingly aware that the method is misspelled.
          * @return The different {@link net.miginfocom.layout.DimConstraint}s that this object consists of. A new list and
          * never <code>null</code>.
          */
         public final DimConstraint[] getConstaints()
         {
                 return cList.toArray(new DimConstraint[cList.size()]);
         }
 
         /** Sets the different {@link net.miginfocom.layout.DimConstraint}s that this object should consists of.
          * <p>
          * Yes, we are embarrassingly aware that the method is misspelled.
          * @param constr The different {@link net.miginfocom.layout.DimConstraint}s that this object consists of. The list
          * will be copied for storage. <code>null</code> or and emty array will reset the constraints to one <code>DimConstraint</code>
          * with default values.
          */
         public final void setConstaints(DimConstraint[] constr)
         {
                 if (constr == null || constr.length < 1 )
                         constr = new DimConstraint[] {new DimConstraint()};
 
                 cList.clear();
                 cList.ensureCapacity(constr.length);
                 for (DimConstraint c : constr)
                         cList.add(c);
         }
 
         /** Returns the number of rows/columns that this constraints currently have.
          * @return The number of rows/columns that this constraints currently have. At least 1.
          */
         public int getCount()
         {
                 return cList.size();
         }
 
         /** Sets the total number of rows/columns to <code>size</code>. If the number of rows/columns is already more
          * than <code>size</code> nothing will happen.
          * @param size The total number of rows/columns
          * @return <code>this</code> so it is possible to chain calls. E.g. <code>new AxisConstraint().noGrid().gap().fill()</code>.
          */
         public final AC count(int size)
         {
                 makeSize(size);
                 return this;
         }
 
         /** Specifies that the current row/column should not be grid-like. The while row/colum will have its components layed out
          * in one single cell. It is the same as to say that the cells in this column/row will all be merged (a.k.a spanned).
          * <p>
          * For a more thorough explanation of what this constraint does see the white paper or cheat Sheet at www.migcomponents.com.
          * @return <code>this</code> so it is possible to chain calls. E.g. <code>new AxisConstraint().noGrid().gap().fill()</code>.
          */
         public final AC noGrid()
         {
                 return noGrid(curIx);
         }
 
         /** Specifies that the indicated rows/columns should not be grid-like. The while row/colum will have its components layed out
          * in one single cell. It is the same as to say that the cells in this column/row will all be merged (a.k.a spanned).
          * <p>
          * For a more thorough explanation of what this constraint does see the white paper or cheat Sheet at www.migcomponents.com.
          * @param indexes The index(es) (0-based) of the columns/rows that should be affected by this constraint.
          * @return <code>this</code> so it is possible to chain calls. E.g. <code>new AxisConstraint().noGrid().gap().fill()</code>.
          */
         public final AC noGrid(int... indexes)
         {
                 for (int i = indexes.length - 1; i >= 0; i--) {
                         int ix = indexes[i];
                         makeSize(ix);
                         cList.get(ix).setNoGrid(true);
                 }
                 return this;
         }
 
         /** Sets the current row/column to <code>i</code>. If the current number of rows/columns is less than <code>i</code> a call
          * to {@link #count(int)} will set the size accordingly.
          * <p>
          * The next call to any of the constraint methods (e.g. {@link net.miginfocom.layout.AC#noGrid}) will be carried
          * out on this new row/column.
          * <p>
          * For a more thorough explanation of what this constraint does see the white paper or cheat Sheet at www.migcomponents.com.
          * @param i The new current row/column.
          * @return <code>this</code> so it is possible to chain calls. E.g. <code>new AxisConstraint().noGrid().gap().fill()</code>.
          */
         public final AC index(int i)
         {
                 makeSize(i);
                 curIx = i;
                 return this;
         }
 
         /** Specifies that the current row/column's component should grow by default. It does not affect the size of the row/column.
          * <p>
          * For a more thorough explanation of what this constraint does see the white paper or cheat Sheet at www.migcomponents.com.
          * @return <code>this</code> so it is possible to chain calls. E.g. <code>new AxisConstraint().noGrid().gap().fill()</code>.
          */
         public final AC fill()
         {
                 return fill(curIx);
         }
 
         /** Specifies that the indicated rows'/columns' component should grow by default. It does not affect the size of the row/column.
          * <p>
          * For a more thorough explanation of what this constraint does see the white paper or cheat Sheet at www.migcomponents.com.
          * @param indexes The index(es) (0-based) of the columns/rows that should be affected by this constraint.
          * @return <code>this</code> so it is possible to chain calls. E.g. <code>new AxisConstraint().noGrid().gap().fill()</code>.
          */
         public final AC fill(int... indexes)
         {
                 for (int i = indexes.length - 1; i >= 0; i--) {
                         int ix = indexes[i];
                         makeSize(ix);
                         cList.get(ix).setFill(true);
                 }
                 return this;
         }
 
 //        /** Specifies that the current row/column should be put in the end group <code>s</code> and will thus share the same ending
 //         * coordinate within the group.
 //         * <p>
 //         * For a more thorough explanation of what this constraint does see the white paper or cheat Sheet at www.migcomponents.com.
 //         * @param s A name to associate on the group that should be the same for other rows/columns in the same group.
 //         * @return <code>this</code> so it is possible to chain calls. E.g. <code>new AxisConstraint().noGrid().gap().fill()</code>.
 //         */
 //        public final AxisConstraint endGroup(String s)
 //        {
 //                return endGroup(s, curIx);
 //        }
 //
 //        /** Specifies that the indicated rows/columns should be put in the end group <code>s</code> and will thus share the same ending
 //         * coordinate within the group.
 //         * <p>
 //         * For a more thorough explanation of what this constraint does see the white paper or cheat Sheet at www.migcomponents.com.
 //         * @param s A name to associate on the group that should be the same for other rows/columns in the same group.
 //         * @param indexes The index(es) (0-based) of the columns/rows that should be affected by this constraint.
 //         * @return <code>this</code> so it is possible to chain calls. E.g. <code>new AxisConstraint().noGrid().gap().fill()</code>.
 //         */
 //        public final AxisConstraint endGroup(String s, int... indexes)
 //        {
 //                for (int i = indexes.length - 1; i >= 0; i--) {
 //                        int ix = indexes[i];
 //                        makeSize(ix);
 //                        cList.get(ix).setEndGroup(s);
 //                }
 //                return this;
 //        }
 
         /** Specifies that the current row/column should be put in the size group <code>s</code> and will thus share the same size
          * constraints as the other components in the group.
          * <p>
          * Same as <code>sizeGroup("")</code>
          * <p>
          * For a more thorough explanation of what this constraint does see the white paper or cheat Sheet at www.migcomponents.com.
          * @return <code>this</code> so it is possible to chain calls. E.g. <code>new AxisConstraint().noGrid().gap().fill()</code>.
          * @since 3.7.2
          */
         public final AC sizeGroup()
         {
                 return sizeGroup("", curIx);
         }
 
         /** Specifies that the current row/column should be put in the size group <code>s</code> and will thus share the same size
          * constraints as the other components in the group.
          * <p>
          * For a more thorough explanation of what this constraint does see the white paper or cheat Sheet at www.migcomponents.com.
          * @param s A name to associate on the group that should be the same for other rows/columns in the same group.
          * @return <code>this</code> so it is possible to chain calls. E.g. <code>new AxisConstraint().noGrid().gap().fill()</code>.
          */
         public final AC sizeGroup(String s)
         {
                 return sizeGroup(s, curIx);
         }
 
         /** Specifies that the indicated rows/columns should be put in the size group <code>s</code> and will thus share the same size
          * constraints as the other components in the group.
          * <p>
          * For a more thorough explanation of what this constraint does see the white paper or cheat Sheet at www.migcomponents.com.
          * @param s A name to associate on the group that should be the same for other rows/columns in the same group.
          * @param indexes The index(es) (0-based) of the columns/rows that should be affected by this constraint.
          * @return <code>this</code> so it is possible to chain calls. E.g. <code>new AxisConstraint().noGrid().gap().fill()</code>.
          */
         public final AC sizeGroup(String s, int... indexes)
         {
                 for (int i = indexes.length - 1; i >= 0; i--) {
                         int ix = indexes[i];
                         makeSize(ix);
                         cList.get(ix).setSizeGroup(s);
                 }
                 return this;
         }
 
         /** Specifies the current row/column's min and/or preferred and/or max size. E.g. <code>"10px"</code> or <code>"50:100:200"</code>.
          * <p>
          * For a more thorough explanation of what this constraint does see the white paper or cheat Sheet at www.migcomponents.com.
          * @param s The minimum and/or preferred and/or maximum size of this row. The string will be interpreted
          * as a <b>BoundSize</b>. For more info on how <b>BoundSize</b> is formatted see the documentation.
          * @return <code>this</code> so it is possible to chain calls. E.g. <code>new AxisConstraint().noGrid().gap().fill()</code>.
          */
         public final AC size(String s)
         {
                 return size(s, curIx);
         }
 
         /** Specifies the indicated rows'/columns' min and/or preferred and/or max size. E.g. <code>"10px"</code> or <code>"50:100:200"</code>.
          * <p>
          * For a more thorough explanation of what this constraint does see the white paper or cheat Sheet at www.migcomponents.com.
          * @param size The minimum and/or preferred and/or maximum size of this row. The string will be interpreted
          * as a <b>BoundSize</b>. For more info on how <b>BoundSize</b> is formatted see the documentation.
          * @param indexes The index(es) (0-based) of the columns/rows that should be affected by this constraint.
          * @return <code>this</code> so it is possible to chain calls. E.g. <code>new AxisConstraint().noGrid().gap().fill()</code>.
          */
         public final AC size(String size, int... indexes)
         {
                 BoundSize bs = ConstraintParser.parseBoundSize(size, false, true);
                 for (int i = indexes.length - 1; i >= 0; i--) {
                         int ix = indexes[i];
                         makeSize(ix);
                         cList.get(ix).setSize(bs);
                 }
                 return this;
         }
 
         /** Specifies the gap size to be the default one <b>AND</b> moves to the next column/row. The method is called <code>.gap()</code>
          * rather the more natural <code>.next()</code> to indicate that it is very much related to the other <code>.gap(..)</code> methods.
          * <p>
          * For a more thorough explanation of what this constraint does see the white paper or cheat Sheet at www.migcomponents.com.
          * @return <code>this</code> so it is possible to chain calls. E.g. <code>new AxisConstraint().noGrid().gap().fill()</code>.
          */
         public final AC gap()
         {
                 curIx++;
                 return this;
         }
 
         /** Specifies the gap size to <code>size</code> <b>AND</b> moves to the next column/row.
          * <p>
          * For a more thorough explanation of what this constraint does see the white paper or cheat Sheet at www.migcomponents.com.
          * @param size minimum and/or preferred and/or maximum size of the gap between this and the next row/column.
          * The string will be interpreted as a <b>BoundSize</b>. For more info on how <b>BoundSize</b> is formatted see the documentation.
          * @return <code>this</code> so it is possible to chain calls. E.g. <code>new AxisConstraint().noGrid().gap().fill()</code>.
          */
         public final AC gap(String size)
         {
                 return gap(size, curIx++);
         }
 
         /** Specifies the indicated rows'/columns' gap size to <code>size</code>.
          * <p>
          * For a more thorough explanation of what this constraint does see the white paper or cheat Sheet at www.migcomponents.com.
          * @param size minimum and/or preferred and/or maximum size of the gap between this and the next row/column.
          * The string will be interpreted as a <b>BoundSize</b>. For more info on how <b>BoundSize</b> is formatted see the documentation.
          * @param indexes The index(es) (0-based) of the columns/rows that should be affected by this constraint.
          * @return <code>this</code> so it is possible to chain calls. E.g. <code>new AxisConstraint().noGrid().gap().fill()</code>.
          */
         public final AC gap(String size, int... indexes)
         {
                 BoundSize bsa = size != null ? ConstraintParser.parseBoundSize(size, true, true) : null;
 
                 for (int i = indexes.length - 1; i >= 0; i--) {
                         int ix = indexes[i];
                         makeSize(ix);
                         if (bsa != null)
                                 cList.get(ix).setGapAfter(bsa);
                 }
                 return this;
         }
 
         /** Specifies the current row/column's columns default alignment <b>for its components</b>. It does not affect the positioning
          * or size of the columns/row itself. For columns it is the horizonal alignment (e.g. "left") and for rows it is the vertical
          * alignment (e.g. "top").
          * <p>
          * For a more thorough explanation of what this constraint does see the white paper or cheat Sheet at www.migcomponents.com.
          * @param side The default side to align the components. E.g. "top" or "left", or "leading" or "trailing" or "bottom" or "right".
          * @return <code>this</code> so it is possible to chain calls. E.g. <code>new AxisConstraint().noGrid().gap().fill()</code>.
          */
         public final AC align(String side)
         {
                 return align(side, curIx);
         }
 
         /** Specifies the indicated rows'/columns' columns default alignment <b>for its components</b>. It does not affect the positioning
          * or size of the columns/row itself. For columns it is the horizonal alignment (e.g. "left") and for rows it is the vertical
          * alignment (e.g. "top").
          * <p>
          * For a more thorough explanation of what this constraint does see the white paper or cheat Sheet at www.migcomponents.com.
          * @param side The default side to align the components. E.g. "top" or "left", or "before" or "after" or "bottom" or "right".
          * @param indexes The index(es) (0-based) of the columns/rows that should be affected by this constraint.
          * @return <code>this</code> so it is possible to chain calls. E.g. <code>new AxisConstraint().noGrid().gap().fill()</code>.
          */
         public final AC align(String side, int... indexes)
         {
                 UnitValue al = ConstraintParser.parseAlignKeywords(side, true);
                 if (al == null)
                         al = ConstraintParser.parseAlignKeywords(side, false);
 
                 for (int i = indexes.length - 1; i >= 0; i--) {
                         int ix = indexes[i];
                         makeSize(ix);
                         cList.get(ix).setAlign(al);
                 }
                 return this;
         }
 
         /** Specifies the current row/column's grow priority.
          * <p>
          * For a more thorough explanation of what this constraint does see the white paper or cheat Sheet at www.migcomponents.com.
          * @param p The new grow priority.
          * @return <code>this</code> so it is possible to chain calls. E.g. <code>new AxisConstraint().noGrid().gap().fill()</code>.
          */
         public final AC growPrio(int p)
         {
                 return growPrio(p, curIx);
         }
 
         /** Specifies the indicated rows'/columns' grow priority.
          * <p>
          * For a more thorough explanation of what this constraint does see the white paper or cheat Sheet at www.migcomponents.com.
          * @param p The new grow priority.
          * @param indexes The index(es) (0-based) of the columns/rows that should be affected by this constraint.
          * @return <code>this</code> so it is possible to chain calls. E.g. <code>new AxisConstraint().noGrid().gap().fill()</code>.
          */
         public final AC growPrio(int p, int... indexes)
         {
                 for (int i = indexes.length - 1; i >= 0; i--) {
                         int ix = indexes[i];
                         makeSize(ix);
                         cList.get(ix).setGrowPriority(p);
                 }
                 return this;
         }
 
         /** Specifies the current row/column's grow weight within columns/rows with the <code>grow priority</code> 100f.
          * <p>
          * Same as <code>grow(100f)</code>
          * <p>
          * For a more thorough explanation of what this constraint does see the white paper or cheat Sheet at www.migcomponents.com.
          * @return <code>this</code> so it is possible to chain calls. E.g. <code>new AxisConstraint().noGrid().gap().fill()</code>.
          * @since 3.7.2
          */
         public final AC grow()
         {
                 return grow(1f, curIx);
         }
 
         /** Specifies the current row/column's grow weight within columns/rows with the same <code>grow priority</code>.
          * <p>
          * For a more thorough explanation of what this constraint does see the white paper or cheat Sheet at www.migcomponents.com.
          * @param w The new grow weight.
          * @return <code>this</code> so it is possible to chain calls. E.g. <code>new AxisConstraint().noGrid().gap().fill()</code>.
          */
         public final AC grow(float w)
         {
                 return grow(w, curIx);
         }
 
         /** Specifies the indicated rows'/columns' grow weight within columns/rows with the same <code>grow priority</code>.
          * <p>
          * For a more thorough explanation of what this constraint does see the white paper or cheat Sheet at www.migcomponents.com.
          * @param w The new grow weight.
          * @param indexes The index(es) (0-based) of the columns/rows that should be affected by this constraint.
          * @return <code>this</code> so it is possible to chain calls. E.g. <code>new AxisConstraint().noGrid().gap().fill()</code>.
          */
         public final AC grow(float w, int... indexes)
         {
                 Float gw = new Float(w);
                 for (int i = indexes.length - 1; i >= 0; i--) {
                         int ix = indexes[i];
                         makeSize(ix);
                         cList.get(ix).setGrow(gw);
                 }
                 return this;
         }
 
         /** Specifies the current row/column's shrink priority.
          * <p>
          * For a more thorough explanation of what this constraint does see the white paper or cheat Sheet at www.migcomponents.com.
          * @param p The new shrink priority.
                   * @return <code>this</code> so it is possible to chain calls. E.g. <code>new AxisConstraint().noGrid().gap().fill()</code>.
          */
         public final AC shrinkPrio(int p)
         {
                 return shrinkPrio(p, curIx);
         }
 
         /** Specifies the indicated rows'/columns' shrink priority.
          * <p>
          * For a more thorough explanation of what this constraint does see the white paper or cheat Sheet at www.migcomponents.com.
          * @param p The new shrink priority.
          * @param indexes The index(es) (0-based) of the columns/rows that should be affected by this constraint.
          * @return <code>this</code> so it is possible to chain calls. E.g. <code>new AxisConstraint().noGrid().gap().fill()</code>.
          */
         public final AC shrinkPrio(int p, int... indexes)
         {
                 for (int i = indexes.length - 1; i >= 0; i--) {
                         int ix = indexes[i];
                         makeSize(ix);
                         cList.get(ix).setShrinkPriority(p);
                 }
                 return this;
         }
 
         /** Specifies that the current row/column's shrink weight withing the columns/rows with the <code>shrink priority</code> 100f.
          * <p>
          * Same as <code>shrink(100f)</code>.
          * <p>
          * For a more thorough explanation of what this constraint does see the White Paper or Cheat Sheet at www.migcomponents.com.
          * @return <code>this</code> so it is possible to chain calls. E.g. <code>new AxisConstraint().noGrid().gap().fill()</code>.
          * @since 3.7.2
          */
         public final AC shrink()
         {
                 return shrink(100f, curIx);
         }
 
         /** Specifies that the current row/column's shrink weight withing the columns/rows with the same <code>shrink priority</code>.
          * <p>
          * For a more thorough explanation of what this constraint does see the White Paper or Cheat Sheet at www.migcomponents.com.
          * @param w The shrink weight.
          * @return <code>this</code> so it is possible to chain calls. E.g. <code>new AxisConstraint().noGrid().gap().fill()</code>.
          * @since 3.7.2
          */
         public final AC shrink(float w)
         {
                 return shrink(w, curIx);
         }
 
         /** Specifies the indicated rows'/columns' shrink weight withing the columns/rows with the same <code>shrink priority</code>.
          * <p>
          * For a more thorough explanation of what this constraint does see the White Paper or Cheat Sheet at www.migcomponents.com.
          * @param w The shrink weight.
          * @param indexes The index(es) (0-based) of the columns/rows that should be affected by this constraint.
          * @return <code>this</code> so it is possible to chain calls. E.g. <code>new AxisConstraint().noGrid().gap().fill()</code>.
          * @since 3.7.2
          */
         public final AC shrink(float w, int... indexes)
         {
                 Float sw = new Float(w);
                 for (int i = indexes.length - 1; i >= 0; i--) {
                         int ix = indexes[i];
                         makeSize(ix);
                         cList.get(ix).setShrink(sw);
                 }
                 return this;
         }
 
         /** Specifies that the current row/column's shrink weight withing the columns/rows with the same <code>shrink priority</code>.
          * <p>
          * For a more thorough explanation of what this constraint does see the White Paper or Cheat Sheet at www.migcomponents.com.
          * @param w The shrink weight.
          * @return <code>this</code> so it is possible to chain calls. E.g. <code>new AxisConstraint().noGrid().gap().fill()</code>.
          * @deprecated in 3.7.2. Use {@link #shrink(float)} instead.
          */
         public final AC shrinkWeight(float w)
         {
                 return shrink(w);
         }
 
         /** Specifies the indicated rows'/columns' shrink weight withing the columns/rows with the same <code>shrink priority</code>.
          * <p>
          * For a more thorough explanation of what this constraint does see the White Paper or Cheat Sheet at www.migcomponents.com.
          * @param w The shrink weight.
          * @param indexes The index(es) (0-based) of the columns/rows that should be affected by this constraint.
          * @return <code>this</code> so it is possible to chain calls. E.g. <code>new AxisConstraint().noGrid().gap().fill()</code>.
          * @deprecated in 3.7.2. Use {@link #shrink(float, int...)} instead.
          */
         public final AC shrinkWeight(float w, int... indexes)
         {
                 return shrink(w, indexes);
         }
 
         private void makeSize(int sz)
         {
                 if (cList.size() <= sz) {
                         cList.ensureCapacity(sz);
                         for (int i = cList.size(); i <= sz; i++)
                                 cList.add(new DimConstraint());
                 }
         }
 
         // ************************************************
         // Persistence Delegate and Serializable combined.
         // ************************************************
 
         private Object readResolve() throws ObjectStreamException
         {
                 return LayoutUtil.getSerializedObject(this);
         }
 
         public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException
         {
                 LayoutUtil.setSerializedObject(this, LayoutUtil.readAsXML(in));
         }
 
         public void writeExternal(ObjectOutput out) throws IOException
         {
                 if (getClass() == AC.class)
                         LayoutUtil.writeAsXML(out, this);
         }
 }