package net.miginfocom.layout;


import java.lang.ref.WeakReference;
import java.util.*;
/*
 * 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
 */

/** Holds components in a grid. Does most of the logic behind the layout manager.
 */
public final class Grid
{
	public static final boolean TEST_GAPS = true;

	private static final Float[] GROW_100 = new Float[] {ResizeConstraint.WEIGHT_100};

	private static final DimConstraint DOCK_DIM_CONSTRAINT = new DimConstraint();
	static {
		DOCK_DIM_CONSTRAINT.setGrowPriority(0);
	}

	/** This is the maximum grid position for "normal" components. Docking components use the space out to
	 * <code>MAX_DOCK_GRID</code> and below 0.
	 */
	private static final int MAX_GRID = 30000;

	/** Docking components will use the grid coordinates <code>-MAX_DOCK_GRID -> 0</code> and <code>MAX_GRID -> MAX_DOCK_GRID</code>.
	 */
	private static final int MAX_DOCK_GRID = 32767;

	/** A constraint used for gaps.
	 */
	private static final ResizeConstraint GAP_RC_CONST = new ResizeConstraint(200, ResizeConstraint.WEIGHT_100, 50, null);
	private static final ResizeConstraint GAP_RC_CONST_PUSH = new ResizeConstraint(200, ResizeConstraint.WEIGHT_100, 50, ResizeConstraint.WEIGHT_100);

	/** Used for components that doesn't have a CC set. Not that it's really really important that the CC is never changed in this Grid class.
	 */
	private static final CC DEF_CC = new CC();

	/** The constraints. Never <code>null</code>.
	 */
	private final LC lc;

	/** The parent that is layout out and this grid is done for. Never <code>null</code>.
	 */
	private final ContainerWrapper container;

	/** An x, y array implemented as a sparse array to accommodate for any grid size without wasting memory (or rather 15 bit (0-MAX_GRID * 0-MAX_GRID).
	 */
	private final LinkedHashMap<Integer, Cell> grid = new LinkedHashMap<Integer, Cell>();   // [(y << 16) + x] -> Cell. null key for absolute positioned compwraps

	private HashMap<Integer, BoundSize> wrapGapMap = null;   // Row or Column index depending in the dimension that "wraps". Normally row indexes but may be column indexes if "flowy". 0 means before first row/col.

	/** The size of the grid. Row count and column count.
	 */
	private final TreeSet<Integer> rowIndexes = new TreeSet<Integer>(), colIndexes = new TreeSet<Integer>();

	/** The row and column specifications.
	 */
	private final AC rowConstr, colConstr;

	/** The in the constructor calculated min/pref/max sizes of the rows and columns.
	 */
	private FlowSizeSpec colFlowSpecs = null, rowFlowSpecs = null;

	/** Components that are connections in one dimension (such as baseline alignment for instance) are grouped together and stored here.
	 * One for each row/column.
	 */
	private final ArrayList<LinkedDimGroup>[] colGroupLists, rowGroupLists;   //[(start)row/col number]

	/** The in the constructor calculated min/pref/max size of the whole grid.
	 */
	private int[] width = null, height = null;

	/** If debug is on contains the bounds for things to paint when calling {@link ContainerWrapper#paintDebugCell(int, int, int, int)}
	  */
	private ArrayList<int[]> debugRects = null; // [x, y, width, height]

	/** If any of the absolute coordinates for component bounds has links the name of the target is in this Set.
	 * Since it requires some memory and computations this is checked at the creation so that
	 * the link information is only created if needed later.
	 * <p>
	 * The boolean is true for groups id:s and null for normal id:s.
	 */
	private HashMap<String, Boolean> linkTargetIDs = null;

	private final int dockOffY, dockOffX;

	private final Float[] pushXs, pushYs;

	private final ArrayList<LayoutCallback> callbackList;

	/** Constructor.
	 * @param container The container that will be laid out.
	 * @param lc The form flow constraints.
	 * @param rowConstr The rows specifications. If more cell rows are required, the last element will be used for when there is no corresponding element in this array.
	 * @param colConstr The columns specifications. If more cell rows are required, the last element will be used for when there is no corresponding element in this array.
	 * @param ccMap The map containing the parsed constraints for each child component of <code>parent</code>. Will not be altered. Can have null CC which will use a common
	 * cached one.
	 * @param callbackList A list of callbacks or <code>null</code> if none. Will not be altered.
	 */
	public Grid(ContainerWrapper container, LC lc, AC rowConstr, AC colConstr, Map<? extends ComponentWrapper, CC> ccMap, ArrayList<LayoutCallback> callbackList)
	{
		this.lc = lc;
		this.rowConstr = rowConstr;
		this.colConstr = colConstr;
		this.container = container;
		this.callbackList = callbackList;

		int wrap = lc.getWrapAfter() != 0 ? lc.getWrapAfter() : (lc.isFlowX() ? colConstr : rowConstr).getConstaints().length;
		boolean useVisualPadding = lc.isVisualPadding();

		final ComponentWrapper[] comps = container.getComponents();

		boolean hasTagged = false;  // So we do not have to sort if it will not do any good
		boolean hasPushX = false, hasPushY = false;
		boolean hitEndOfRow = false;
		final int[] cellXY = new int[2];
		final ArrayList<int[]> spannedRects = new ArrayList<int[]>(2);

		final DimConstraint[] specs = (lc.isFlowX() ? rowConstr : colConstr).getConstaints();

		int sizeGroupsX = 0, sizeGroupsY = 0;
		int[] dockInsets = null;    // top, left, bottom, right insets for docks.

		LinkHandler.clearTemporaryBounds(container.getLayout());

		for (int i = 0; i < comps.length;) {
			ComponentWrapper comp = comps[i];
			CC rootCc = getCC(comp, ccMap);

			addLinkIDs(rootCc);

			int hideMode = comp.isVisible() ? -1 : rootCc.getHideMode() != -1 ? rootCc.getHideMode() : lc.getHideMode();

			if (hideMode == 3) { // To work with situations where there are components that does not have a layout manager, or not this one.
				setLinkedBounds(comp, rootCc, comp.getX(), comp.getY(), comp.getWidth(), comp.getHeight(), rootCc.isExternal());
				i++;
				continue;   // The "external" component should not be handled further.
			}

			if (rootCc.getHorizontal().getSizeGroup() != null)
				sizeGroupsX++;
			if (rootCc.getVertical().getSizeGroup() != null)
				sizeGroupsY++;

			// Special treatment of absolute positioned components.
			if (getPos(comp, rootCc) != null || rootCc.isExternal()) {

				CompWrap cw = new CompWrap(comp, rootCc, hideMode, useVisualPadding);
				Cell cell = grid.get(null);
				if (cell == null) {
					grid.put(null, new Cell(cw));
				} else {
					cell.compWraps.add(cw);
				}

				if (!rootCc.isBoundsInGrid() || rootCc.isExternal()) {
					setLinkedBounds(comp, rootCc, comp.getX(), comp.getY(), comp.getWidth(), comp.getHeight(), rootCc.isExternal());
					i++;
					continue;
				}
			}

			if (rootCc.getDockSide() != -1) {
				if (dockInsets == null)
					dockInsets = new int[] {-MAX_DOCK_GRID, -MAX_DOCK_GRID, MAX_DOCK_GRID, MAX_DOCK_GRID};

				addDockingCell(dockInsets, rootCc.getDockSide(), new CompWrap(comp, rootCc, hideMode, useVisualPadding));
				i++;
				continue;
			}

			Boolean cellFlowX = rootCc.getFlowX();
			Cell cell = null;

			if (rootCc.isNewline()) {
				wrap(cellXY, rootCc.getNewlineGapSize());
			} else if (hitEndOfRow) {
				wrap(cellXY, null);
			}
			hitEndOfRow = false;

			final boolean rowNoGrid = lc.isNoGrid() || ((DimConstraint) LayoutUtil.getIndexSafe(specs, lc.isFlowX() ? cellXY[1] : cellXY[0])).isNoGrid();

			// Move to a free y, x  if no absolute grid specified
			int cx = rootCc.getCellX();
			int cy = rootCc.getCellY();
			if ((cx < 0 || cy < 0) && rowNoGrid == false && rootCc.getSkip() == 0) { // 3.7.2: If skip, don't find an empty cell first.
				while (isCellFree(cellXY[1], cellXY[0], spannedRects) == false) {
					if (Math.abs(increase(cellXY, 1)) >= wrap)
						wrap(cellXY, null);
				}
			} else {
				if (cx >= 0 && cy >= 0) {
					if (cy >= 0) {
						cellXY[0] = cx;
						cellXY[1] = cy;
					} else {    // Only one coordinate is specified. Use the current row (flowx) or column (flowy) to fill in.
						if (lc.isFlowX()) {
							cellXY[0] = cx;
						} else {
							cellXY[1] = cx;
						}
					}
				}
				cell = getCell(cellXY[1], cellXY[0]);   // Might be null
			}

			// Skip a number of cells. Changed for 3.6.1 to take wrap into account and thus "skip" to the next and possibly more rows.
			for (int s = 0, skipCount = rootCc.getSkip(); s < skipCount; s++) {
				do {
					if (Math.abs(increase(cellXY, 1)) >= wrap)
						wrap(cellXY, null);
				} while (isCellFree(cellXY[1], cellXY[0], spannedRects) == false);
			}

			// If cell is not created yet, create it and set it.
			if (cell == null) {
				int spanx = Math.min(rowNoGrid && lc.isFlowX() ? LayoutUtil.INF : rootCc.getSpanX(), MAX_GRID - cellXY[0]);
				int spany = Math.min(rowNoGrid && !lc.isFlowX() ? LayoutUtil.INF : rootCc.getSpanY(), MAX_GRID - cellXY[1]);

				cell = new Cell(spanx, spany, cellFlowX != null ? cellFlowX : lc.isFlowX());

				setCell(cellXY[1], cellXY[0], cell);

				// Add a rectangle so we can know that spanned cells occupy more space.
				if (spanx > 1 || spany > 1)
					spannedRects.add(new int[] {cellXY[0], cellXY[1], spanx, spany});
			}

			// Add the one, or all, components that split the grid position to the same Cell.
			boolean wrapHandled = false;
			int splitLeft = rowNoGrid ? LayoutUtil.INF : rootCc.getSplit() - 1;
			boolean splitExit = false;
			final boolean spanRestOfRow = (lc.isFlowX() ? rootCc.getSpanX() : rootCc.getSpanY()) == LayoutUtil.INF;

			for (; splitLeft >= 0 && i < comps.length; splitLeft--) {
				ComponentWrapper compAdd = comps[i];
				CC cc = getCC(compAdd, ccMap);

				addLinkIDs(cc);

				boolean visible = compAdd.isVisible();
				hideMode = visible ? -1 : cc.getHideMode() != -1 ? cc.getHideMode() : lc.getHideMode();

				if (cc.isExternal() || hideMode == 3) {
					i++;
					splitLeft++;    // Added for 3.5.5 so that these components does not "take" a split slot.
					continue;       // To work with situations where there are components that does not have a layout manager, or not this one.
				}

				hasPushX |= (visible || hideMode > 1) && (cc.getPushX() != null);
				hasPushY |= (visible || hideMode > 1) && (cc.getPushY() != null);

				if (cc != rootCc) { // If not first in a cell
					if (cc.isNewline() || cc.isBoundsInGrid() == false || cc.getDockSide() != -1)
						break;

					if (splitLeft > 0 && cc.getSkip() > 0) {
						splitExit = true;
						break;
					}

//					pos = getPos(compAdd, cc);
//					cbSz = getCallbackSize(compAdd);
				}

				CompWrap cw = new CompWrap(compAdd, cc, hideMode, useVisualPadding);
				cell.compWraps.add(cw);
				cell.hasTagged |= cc.getTag() != null;
				hasTagged |= cell.hasTagged;

				if (cc != rootCc) {
					if (cc.getHorizontal().getSizeGroup() != null)
						sizeGroupsX++;
					if (cc.getVertical().getSizeGroup() != null)
						sizeGroupsY++;
				}

				i++;

				if ((cc.isWrap() || (spanRestOfRow && splitLeft == 0))) {
					if (cc.isWrap()) {
						wrap(cellXY, cc.getWrapGapSize());
					} else {
						hitEndOfRow = true;
					}
					wrapHandled = true;
					break;
				}
			}

			if (wrapHandled == false && rowNoGrid == false) {
				int span = lc.isFlowX() ? cell.spanx : cell.spany;
				if (Math.abs((lc.isFlowX() ? cellXY[0] : cellXY[1])) + span >= wrap) {
					hitEndOfRow = true;
				} else {
					increase(cellXY, splitExit ? span - 1 : span);
				}
			}
		}

		// If there were size groups, calculate the largest values in the groups (for min/pref/max) and enforce them on the rest in the group.
		if (sizeGroupsX > 0 || sizeGroupsY > 0) {
			HashMap<String, int[]> sizeGroupMapX = sizeGroupsX > 0 ? new HashMap<String, int[]>(sizeGroupsX) : null;
			HashMap<String, int[]> sizeGroupMapY = sizeGroupsY > 0 ? new HashMap<String, int[]>(sizeGroupsY) : null;
			ArrayList<CompWrap> sizeGroupCWs = new ArrayList<CompWrap>(Math.max(sizeGroupsX, sizeGroupsY));

			for (Cell cell : grid.values()) {
				for (int i = 0; i < cell.compWraps.size(); i++) {
					CompWrap cw = cell.compWraps.get(i);
					String sgx = cw.cc.getHorizontal().getSizeGroup();
					String sgy = cw.cc.getVertical().getSizeGroup();

					if (sgx != null || sgy != null) {
						if (sgx != null && sizeGroupMapX != null)
							addToSizeGroup(sizeGroupMapX, sgx, cw.getSizes(true));
						if (sgy != null && sizeGroupMapY != null)
							addToSizeGroup(sizeGroupMapY, sgy, cw.getSizes(false));
						sizeGroupCWs.add(cw);
					}
				}
			}

			// Set/equalize the sizeGroups to same the values.
			for (CompWrap cw : sizeGroupCWs) {
				if (sizeGroupMapX != null)
					cw.setForcedSizes(sizeGroupMapX.get(cw.cc.getHorizontal().getSizeGroup()), true);  // Target method handles null sizes
				if (sizeGroupMapY != null)
					cw.setForcedSizes(sizeGroupMapY.get(cw.cc.getVertical().getSizeGroup()), false); // Target method handles null sizes
			}
		} // Component loop

		if (hasTagged)
			sortCellsByPlatform(grid.values(), container);

		// Calculate gaps now that the cells are filled and we know all adjacent components.
		boolean ltr = LayoutUtil.isLeftToRight(lc, container);
		for (Cell cell : grid.values()) {
			ArrayList<CompWrap> cws = cell.compWraps;

			for (int i = 0, lastI = cws.size() - 1; i <= lastI; i++) {
				CompWrap cw = cws.get(i);
				ComponentWrapper cwBef = i > 0 ? cws.get(i - 1).comp : null;
				ComponentWrapper cwAft = i < lastI ? cws.get(i + 1).comp : null;

				String tag = getCC(cw.comp, ccMap).getTag();
				CC ccBef = cwBef != null ? getCC(cwBef, ccMap) : null;
				CC ccAft = cwAft != null ? getCC(cwAft, ccMap) : null;

				cw.calcGaps(cwBef, ccBef, cwAft, ccAft, tag, cell.flowx, ltr);
			}
		}

		dockOffX = getDockInsets(colIndexes);
		dockOffY = getDockInsets(rowIndexes);

		// Add synthetic indexes for empty rows and columns so they can get a size
		for (int i = 0, iSz = rowConstr.getCount(); i < iSz; i++)
			rowIndexes.add(i);
		for (int i = 0, iSz = colConstr.getCount(); i < iSz; i++)
			colIndexes.add(i);

		colGroupLists = divideIntoLinkedGroups(false);
		rowGroupLists = divideIntoLinkedGroups(true);

		pushXs = hasPushX || lc.isFillX() ? getDefaultPushWeights(false) : null;
		pushYs = hasPushY || lc.isFillY() ? getDefaultPushWeights(true) : null;

		if (LayoutUtil.isDesignTime(container))
			saveGrid(container, grid);
	}

	private static CC getCC(ComponentWrapper comp, Map<? extends ComponentWrapper, CC> ccMap)
	{
		CC cc = ccMap.get(comp);
		return cc != null ? cc : DEF_CC;
	}

	private void addLinkIDs(CC cc)
	{
		String[] linkIDs = cc.getLinkTargets();
		for (String linkID : linkIDs) {
			if (linkTargetIDs == null)
				linkTargetIDs = new HashMap<String, Boolean>();
			linkTargetIDs.put(linkID, null);
		}
	}

	/** If the container (parent) that this grid is laying out has changed its bounds, call this method to
	 * clear any cached values min/pref/max sizes of the components and rows/columns.
	 * <p>
	 * If any component can have changed cell the grid needs to be recreated.
	 */
	public void invalidateContainerSize()
	{
		colFlowSpecs = null;
		invalidateComponentSizes();
	}

	private void invalidateComponentSizes()
	{
		for (Cell cell : grid.values()) {
			for (CompWrap compWrap : cell.compWraps)
				compWrap.invalidateSizes();
		}
	}

	/**
	 * @deprecated since 5.0 Last boolean is not needed and is gotten from the new {@link net.miginfocom.layout.ComponentWrapper#getContentBias()} instead;
	 */
	public boolean layout(int[] bounds, UnitValue alignX, UnitValue alignY, boolean debug, boolean notUsed)
	{
		return layoutImpl(bounds, alignX, alignY, debug, false);
	}

	/** Does the actual layout. Uses many values calculated in the constructor.
	 * @param bounds The bounds to layout against. Normally that of the parent. [x, y, width, height].
	 * @param alignX The alignment for the x-axis. Can be null.
	 * @param alignY The alignment for the y-axis. Can be null.
	 * @param debug If debug information should be saved in {@link #debugRects}.
	 * @return If the layout has changed the preferred size and there is need for a new layout. This can happen if one or more components
	 * in the grid has a content bias according to {@link net.miginfocom.layout.ComponentWrapper#getContentBias()}.
	 * @since 5.0
	 */
	public boolean layout(int[] bounds, UnitValue alignX, UnitValue alignY, boolean debug)
	{
		return layoutImpl(bounds, alignX, alignY, debug, false);
	}

	/** Does the actual layout. Uses many values calculated in the constructor.
	 * @param bounds The bounds to layout against. Normally that of the parent. [x, y, width, height].
	 * @param alignX The alignment for the x-axis. Can be null.
	 * @param alignY The alignment for the y-axis. Can be null.
	 * @param debug If debug information should be saved in {@link #debugRects}.
	 * @param trialRun If true the bounds calculated will not be transferred to the components. Only the internal size
	 * of the components will be calculated.
	 * @return If the layout has changed the preferred size and there is need for a new layout. This can happen if one or more components
	 * in the grid has a content bias according to {@link net.miginfocom.layout.ComponentWrapper#getContentBias()}.
	 * @since 5.0
	 */
	private boolean layoutImpl(int[] bounds, UnitValue alignX, UnitValue alignY, boolean debug, boolean trialRun)
	{
		if (debug)
			debugRects = new ArrayList<int[]>();

		if (colFlowSpecs == null)
			checkSizeCalcs(bounds[2], bounds[3]);

		resetLinkValues(true, true);

		layoutInOneDim(bounds[2], alignX, false, pushXs);
		layoutInOneDim(bounds[3], alignY, true, pushYs);

		HashMap<String, Integer> endGrpXMap = null, endGrpYMap = null;
		int compCount = container.getComponentCount();

		// Transfer the calculated bound from the ComponentWrappers to the actual Components.
		boolean addVisualPadding = lc.isVisualPadding();
		boolean layoutAgain = false;
		if (compCount > 0) {
			for (int j = 0; j < (linkTargetIDs != null ? 2 : 1); j++) {   // First do the calculations (maybe more than once) then set the bounds when done
				boolean doAgain;
				int count = 0;
				do {
					doAgain = false;
					for (Cell cell : grid.values()) {
						ArrayList<CompWrap> compWraps = cell.compWraps;
						for (CompWrap cw : compWraps) {
							if (j == 0) {
								doAgain |= doAbsoluteCorrections(cw, bounds);
								if (!doAgain) { // If we are going to do this again, do not bother this time around
									if (cw.cc.getHorizontal().getEndGroup() != null)
										endGrpXMap = addToEndGroup(endGrpXMap, cw.cc.getHorizontal().getEndGroup(), cw.x + cw.w);

									if (cw.cc.getVertical().getEndGroup() != null)
										endGrpYMap = addToEndGroup(endGrpYMap, cw.cc.getVertical().getEndGroup(), cw.y + cw.h);
								}

								// @since 3.7.2 Needed or absolute "pos" pointing to "visual" or "container" didn't work if
								// their bounds changed during the layout cycle. At least not in SWT.
								if (linkTargetIDs != null && (linkTargetIDs.containsKey("visual") || linkTargetIDs.containsKey("container"))) {
									layoutAgain = true;
								}
							}

							if (linkTargetIDs == null || j == 1) {
								if (cw.cc.getHorizontal().getEndGroup() != null)
									cw.w = endGrpXMap.get(cw.cc.getHorizontal().getEndGroup()) - cw.x;

								if (cw.cc.getVertical().getEndGroup() != null)
									cw.h = endGrpYMap.get(cw.cc.getVertical().getEndGroup()) - cw.y;

								cw.x += bounds[0];
								cw.y += bounds[1];

								if (!trialRun)
									cw.transferBounds(addVisualPadding);

								if (callbackList != null) {
									for (LayoutCallback callback : callbackList)
										callback.correctBounds(cw.comp);
								}
							}
						}
					}
					clearGroupLinkBounds();
					if (++count > ((compCount << 3) + 10)) {
						System.err.println("Unstable cyclic dependency in absolute linked values!");
						break;
					}

				} while (doAgain);
			}
		}

		// Add debug shapes for the "cells". Use the CompWraps as base for inding the cells.
		if (debug) {
			for (Cell cell : grid.values()) {
				ArrayList<CompWrap> compWraps = cell.compWraps;
				for (CompWrap cw : compWraps) {
					LinkedDimGroup hGrp = getGroupContaining(colGroupLists, cw);
					LinkedDimGroup vGrp = getGroupContaining(rowGroupLists, cw);

					if (hGrp != null && vGrp != null)
						debugRects.add(new int[]{hGrp.lStart + bounds[0] - (hGrp.fromEnd ? hGrp.lSize : 0), vGrp.lStart + bounds[1] - (vGrp.fromEnd ? vGrp.lSize : 0), hGrp.lSize, vGrp.lSize});
				}
			}
		}
		return layoutAgain;
	}

	public void paintDebug()
	{
		if (debugRects != null) {
			container.paintDebugOutline(lc.isVisualPadding());

			ArrayList<int[]> painted = new ArrayList<int[]>();
			for (int[] r : debugRects) {
				if (!painted.contains(r)) {
					container.paintDebugCell(r[0], r[1], r[2], r[3]);
					painted.add(r);
				}
			}

			for (Cell cell : grid.values()) {
				ArrayList<CompWrap> compWraps = cell.compWraps;
				for (CompWrap compWrap : compWraps)
					compWrap.comp.paintDebugOutline(lc.isVisualPadding());
			}
		}
	}

	public ContainerWrapper getContainer()
	{
		return container;
	}

	public final int[] getWidth()
	{
		return getWidth(lastRefHeight);
	}

	public final int[] getWidth(int refHeight)
	{
		checkSizeCalcs(lastRefWidth, refHeight);
		return width.clone();
	}

	public final int[] getHeight()
	{
		return getHeight(lastRefWidth);
	}

	public final int[] getHeight(int refWidth)
	{
		checkSizeCalcs(refWidth, lastRefHeight);
		return height.clone();
	}

	private int lastRefWidth = 0, lastRefHeight = 0;

	private void checkSizeCalcs(int refWidth, int refHeight)
	{
		if (colFlowSpecs == null)
			calcGridSizes(refWidth, refHeight);

		if ((refWidth > 0 && refWidth != lastRefWidth) || (refHeight > 0 && refHeight != lastRefHeight)) {
//			System.out.println("prelayout for w: " + refWidth + ", h: " + refHeight);
			int[] refBounds = new int[] {0, 0, (refWidth > 0 ? refWidth : width[LayoutUtil.PREF]), (refHeight > 0 ? refHeight : height[LayoutUtil.PREF])};
			layoutImpl(refBounds, null, null, false, true);
			calcGridSizes(refWidth, refHeight);
		}

		lastRefWidth = refWidth;
		lastRefHeight = refHeight;
	}

	private void calcGridSizes(int refWidth, int refHeight)
	{
//		System.out.println("REcalc grid size for w: " + refWidth + ", h: " + refHeight);

		colFlowSpecs = calcRowsOrColsSizes(true, refWidth);
		rowFlowSpecs = calcRowsOrColsSizes(false, refHeight);

		width = getMinPrefMaxSumSize(true);
		height = getMinPrefMaxSumSize(false);

		if (linkTargetIDs == null) {
			resetLinkValues(false, true);
		} else {
			// This call makes some components flicker on SWT. They get their bounds changed twice since
			// the change might affect the absolute size adjustment below. There's no way around this that
			// I know of.
			layout(new int[4], null, null, false);
			resetLinkValues(false, false);
		}

		adjustSizeForAbsolute(true);
		adjustSizeForAbsolute(false);
	}

	private UnitValue[] getPos(ComponentWrapper cw, CC cc)
	{
		UnitValue[] callbackPos = null;
		if (callbackList != null) {
			for (int i = 0; i < callbackList.size() && callbackPos == null; i++)
				callbackPos = callbackList.get(i).getPosition(cw);   // NOT a copy!
		}

		// If one is null, return the other (which many also be null)
		UnitValue[] ccPos = cc.getPos();    // A copy!!
		if (callbackPos == null || ccPos == null)
			return callbackPos != null ? callbackPos : ccPos;

		// Merge
		for (int i = 0; i < 4; i++) {
			UnitValue cbUv = callbackPos[i];
			if (cbUv != null)
				ccPos[i] = cbUv;
		}

		return ccPos;
	}

	private BoundSize[] getCallbackSize(ComponentWrapper cw)
	{
		if (callbackList != null) {
			for (LayoutCallback callback : callbackList) {
				BoundSize[] bs = callback.getSize(cw);   // NOT a copy!
				if (bs != null)
					return bs;
			}
		}
		return null;
	}

	private static int getDockInsets(TreeSet<Integer> set)
	{
		int c = 0;
		for (Integer i : set) {
			if (i < -MAX_GRID) {
				c++;
			} else {
				break;  // Since they are sorted we can break
			}
		}
		return c;
	}

	/**
	 * @param cw Never <code>null</code>.
	 * @param cc Never <code>null</code>.
	 * @param external The bounds should be stored even if they are not in {@link #linkTargetIDs}.
	 * @return If a change has been made.
	 */
	private boolean setLinkedBounds(ComponentWrapper cw, CC cc, int x, int y, int w, int h, boolean external)
	{
		String id = cc.getId() != null ? cc.getId() : cw.getLinkId();
		if (id == null)
			return false;

		String gid = null;
		int grIx = id.indexOf('.');
		if (grIx != -1 ) {
			gid = id.substring(0, grIx);
			id = id.substring(grIx + 1);
		}

		Object lay = container.getLayout();
		boolean changed = false;
		if (external || (linkTargetIDs != null && linkTargetIDs.containsKey(id)))
			changed = LinkHandler.setBounds(lay, id, x, y, w, h, !external, false);

		if (gid != null && (external || (linkTargetIDs != null && linkTargetIDs.containsKey(gid)))) {
			if (linkTargetIDs == null)
				linkTargetIDs = new HashMap<String, Boolean>(4);

			linkTargetIDs.put(gid, Boolean.TRUE);
			changed |= LinkHandler.setBounds(lay, gid, x, y, w, h, !external, true);
		}

		return changed;
	}

	/** Go to next cell.
	 * @param p The point to increase
	 * @param cnt How many cells to advance.
	 * @return The new value in the "incresing" dimension.
	 */
	private int increase(int[] p, int cnt)
	{
		return lc.isFlowX() ? (p[0] += cnt) : (p[1] += cnt);
	}

	/** Wraps to the next row or column depending on if horizontal flow or vertical flow is used.
	 * @param cellXY The point to wrap and thus set either x or y to 0 and increase the other one.
	 * @param gapSize The gaps size specified in a "wrap XXX" or "newline XXX" or <code>null</code> if none.
	 */
	private void wrap(int[] cellXY, BoundSize gapSize)
	{
		boolean flowx = lc.isFlowX();
		cellXY[0] = flowx ? 0 : cellXY[0] + 1;
		cellXY[1] = flowx ? cellXY[1] + 1 : 0;

		if (gapSize != null) {
			if (wrapGapMap == null)
				wrapGapMap = new HashMap<Integer, BoundSize>(8);

			wrapGapMap.put(cellXY[flowx ? 1 : 0], gapSize);
		}

		// add the row/column so that the gap in the last row/col will not be removed.
		if (flowx) {
			rowIndexes.add(cellXY[1]);
		} else {
			colIndexes.add(cellXY[0]);
		}
	}

	/** Sort components (normally buttons in a button bar) so they appear in the correct order.
	 * @param cells The cells to sort.
	 * @param parent The parent.
	 */
	private static void sortCellsByPlatform(Collection<Cell> cells, ContainerWrapper parent)
	{
		String order = PlatformDefaults.getButtonOrder();
		String orderLo = order.toLowerCase();

		int unrelSize = PlatformDefaults.convertToPixels(1, "u", true, 0, parent, null);

		if (unrelSize == UnitConverter.UNABLE)
			throw new IllegalArgumentException("'unrelated' not recognized by PlatformDefaults!");

		int[] gapUnrel = new int[] {unrelSize, unrelSize, LayoutUtil.NOT_SET};
		int[] flGap = new int[] {0, 0, LayoutUtil.NOT_SET};

		for (Cell cell : cells) {
			if (cell.hasTagged == false)
				continue;

			CompWrap prevCW = null;
			boolean nextUnrel = false;
			boolean nextPush = false;
			ArrayList<CompWrap> sortedList = new ArrayList<CompWrap>(cell.compWraps.size());

			for (int i = 0, iSz = orderLo.length(); i < iSz; i++) {
				char c = orderLo.charAt(i);
				if (c == '+' || c == '_') {
					nextUnrel = true;
					if (c == '+')
						nextPush = true;
				} else {
					String tag = PlatformDefaults.getTagForChar(c);
					if (tag != null) {
						for (int j = 0, jSz = cell.compWraps.size(); j < jSz; j++) {
							CompWrap cw = cell.compWraps.get(j);
							if (tag.equals(cw.cc.getTag())) {
								if (Character.isUpperCase(order.charAt(i)))
									cw.adjustMinHorSizeUp(PlatformDefaults.getMinimumButtonWidth().getPixels(0, parent, cw.comp));

								sortedList.add(cw);

								if (nextUnrel) {
									(prevCW != null ? prevCW : cw).mergeGapSizes(gapUnrel, cell.flowx, prevCW == null);
									if (nextPush) {
										cw.forcedPushGaps = 1;
										nextUnrel = false;
										nextPush = false;
									}
								}

								// "unknown" components will always get an Unrelated gap.
								if (c == 'u')
									nextUnrel = true;
								prevCW = cw;
							}
						}
					}
				}
			}

			// If we have a gap that was supposed to push but no more components was found to but the "gap before" then compensate.
			if (sortedList.size() > 0) {
				CompWrap cw = sortedList.get(sortedList.size() - 1);
				if (nextUnrel) {
					cw.mergeGapSizes(gapUnrel, cell.flowx, false);
					if (nextPush)
						cw.forcedPushGaps |= 2;
				}

				// Remove first and last gap if not set explicitly.
				if (cw.cc.getHorizontal().getGapAfter() == null)
					cw.setGaps(flGap, 3);

				cw = sortedList.get(0);
				if (cw.cc.getHorizontal().getGapBefore() == null)
					cw.setGaps(flGap, 1);
			}

			// Exchange the unsorted CompWraps for the sorted one.
			if (cell.compWraps.size() == sortedList.size()) {
				cell.compWraps.clear();
			} else {
				cell.compWraps.removeAll(sortedList);
			}
			cell.compWraps.addAll(sortedList);
		}
	}

	private Float[] getDefaultPushWeights(boolean isRows)
	{
		ArrayList<LinkedDimGroup>[] groupLists = isRows ? rowGroupLists : colGroupLists;

		Float[] pushWeightArr = GROW_100;   // Only create specific if any of the components have grow.
		for (int i = 0, ix = 1; i < groupLists.length; i++, ix += 2) {
			ArrayList<LinkedDimGroup> grps = groupLists[i];
			Float rowPushWeight = null;
			for (LinkedDimGroup grp : grps) {
				for (int c = 0; c < grp._compWraps.size(); c++) {
					CompWrap cw = grp._compWraps.get(c);
					int hideMode = cw.comp.isVisible() ? -1 : cw.cc.getHideMode() != -1 ? cw.cc.getHideMode() : lc.getHideMode();

					Float pushWeight = hideMode < 2 ? (isRows ? cw.cc.getPushY() : cw.cc.getPushX()) : null;
					if (rowPushWeight == null || (pushWeight != null && pushWeight.floatValue() > rowPushWeight.floatValue()))
						rowPushWeight = pushWeight;
				}
			}

			if (rowPushWeight != null) {
				if (pushWeightArr == GROW_100)
					pushWeightArr = new Float[(groupLists.length << 1) + 1];
				pushWeightArr[ix] = rowPushWeight;
			}
		}

		return pushWeightArr;
	}

	private void clearGroupLinkBounds()
	{
		if (linkTargetIDs == null)
			return;

		for (Map.Entry<String, Boolean> o : linkTargetIDs.entrySet()) {
			if (o.getValue() == Boolean.TRUE)
				LinkHandler.clearBounds(container.getLayout(), o.getKey());
		}
	}

	private void resetLinkValues(boolean parentSize, boolean compLinks)
	{
		Object lay = container.getLayout();
		if (compLinks)
			LinkHandler.clearTemporaryBounds(lay);

		boolean defIns = !hasDocks();

		int parW = parentSize ? lc.getWidth().constrain(container.getWidth(), getParentSize(container, true), container) : 0;
		int parH = parentSize ? lc.getHeight().constrain(container.getHeight(), getParentSize(container, false), container) : 0;

		int insX = LayoutUtil.getInsets(lc, 0, defIns).getPixels(0, container, null);
		int insY = LayoutUtil.getInsets(lc, 1, defIns).getPixels(0, container, null);
		int visW = parW - insX - LayoutUtil.getInsets(lc, 2, defIns).getPixels(0, container, null);
		int visH = parH - insY - LayoutUtil.getInsets(lc, 3, defIns).getPixels(0, container, null);

		LinkHandler.setBounds(lay, "visual", insX, insY, visW, visH, true, false);
		LinkHandler.setBounds(lay, "container", 0, 0, parW, parH, true, false);
	}

	/** Returns the {@link net.miginfocom.layout.Grid.LinkedDimGroup} that has the {@link net.miginfocom.layout.Grid.CompWrap}
	 * <code>cw</code>.
	 * @param groupLists The lists to search in.
	 * @param cw The component wrap to find.
	 * @return The linked group or <code>null</code> if none had the component wrap.
	 */
	private static LinkedDimGroup getGroupContaining(ArrayList<LinkedDimGroup>[] groupLists, CompWrap cw)
	{
		for (ArrayList<LinkedDimGroup> groups : groupLists) {
			for (int j = 0, jSz = groups.size(); j < jSz; j++) {
				ArrayList<CompWrap> cwList = groups.get(j)._compWraps;
				for (int k = 0, kSz = cwList.size(); k < kSz; k++) {
					if (cwList.get(k) == cw)
						return groups.get(j);
				}
			}
		}
		return null;
	}

	private boolean doAbsoluteCorrections(CompWrap cw, int[] bounds)
	{
		boolean changed = false;

		int[] stSz = getAbsoluteDimBounds(cw, bounds[2], true);
		if (stSz != null)
			cw.setDimBounds(stSz[0], stSz[1], true);

		stSz = getAbsoluteDimBounds(cw, bounds[3], false);
		if (stSz != null)
			cw.setDimBounds(stSz[0], stSz[1], false);

		// If there is a link id, store the new bounds.
		if (linkTargetIDs != null)
			changed = setLinkedBounds(cw.comp, cw.cc, cw.x, cw.y, cw.w, cw.h, false);

		return changed;
	}

	/** Adjust grid's width or height for the absolute components' positions.
	 */
	private void adjustSizeForAbsolute(boolean isHor)
	{
		int[] curSizes = isHor ? width : height;

		Cell absCell = grid.get(null);
		if (absCell == null || absCell.compWraps.size() == 0)
			return;

		ArrayList<CompWrap> cws = absCell.compWraps;

		int maxEnd = 0;
		for (int j = 0, cwSz = absCell.compWraps.size(); j < cwSz + 3; j++) {  // "Do Again" max absCell.compWraps.size() + 3 times.
			boolean doAgain = false;
			for (int i = 0; i < cwSz; i++) {
				CompWrap cw = cws.get(i);
				int[] stSz = getAbsoluteDimBounds(cw, 0, isHor);
				int end = stSz[0] + stSz[1];
				if (maxEnd < end)
					maxEnd = end;

				// If there is a link id, store the new bounds.
				if (linkTargetIDs != null)
					doAgain |= setLinkedBounds(cw.comp, cw.cc, stSz[0], stSz[0], stSz[1], stSz[1], false);
			}
			if (doAgain == false)
				break;

			// We need to check this again since the coords may be smaller this round.
			maxEnd = 0;
			clearGroupLinkBounds();
		}

		maxEnd += LayoutUtil.getInsets(lc, isHor ? 3 : 2, !hasDocks()).getPixels(0, container, null);

		if (curSizes[LayoutUtil.MIN] < maxEnd)
			curSizes[LayoutUtil.MIN] = maxEnd;
		if (curSizes[LayoutUtil.PREF] < maxEnd)
			curSizes[LayoutUtil.PREF] = maxEnd;
	}

	private int[] getAbsoluteDimBounds(CompWrap cw, int refSize, boolean isHor)
	{
		if (cw.cc.isExternal()) {
			if (isHor) {
				return new int[] {cw.comp.getX(), cw.comp.getWidth()};
			} else {
				return new int[] {cw.comp.getY(), cw.comp.getHeight()};
			}
		}

		UnitValue[] pad = cw.cc.getPadding();

		// If no changes do not create a lot of objects
		UnitValue[] pos = getPos(cw.comp, cw.cc);
		if (pos == null && pad == null)
			return null;

		// Set start
		int st = isHor ? cw.x : cw.y;
		int sz = isHor ? cw.w : cw.h;

		// If absolute, use those coordinates instead.
		if (pos != null) {
			UnitValue stUV = pos != null ? pos[isHor ? 0 : 1] : null;
			UnitValue endUV = pos != null ? pos[isHor ? 2 : 3] : null;

			int minSz = cw.getSize(LayoutUtil.MIN, isHor);
			int maxSz = cw.getSize(LayoutUtil.MAX, isHor);
			sz = Math.min(Math.max(cw.getSize(LayoutUtil.PREF, isHor), minSz), maxSz);

			if (stUV != null) {
				st = stUV.getPixels(stUV.getUnit() == UnitValue.ALIGN ? sz : refSize, container, cw.comp);

				if (endUV != null)  // if (endUV == null && cw.cc.isBoundsIsGrid() == true)
					sz = Math.min(Math.max((isHor ? (cw.x + cw.w) : (cw.y + cw.h)) - st, minSz), maxSz);
			}

			if (endUV != null) {
				if (stUV != null) {   // if (stUV != null || cw.cc.isBoundsIsGrid()) {
					sz = Math.min(Math.max(endUV.getPixels(refSize, container, cw.comp) - st, minSz), maxSz);
				} else {
					st = endUV.getPixels(refSize, container, cw.comp) - sz;
				}
			}
		}

		// If constraint has padding -> correct the start/size
		if (pad != null) {
			UnitValue uv = pad[isHor ? 1 : 0];
			int p = uv != null ? uv.getPixels(refSize, container, cw.comp) : 0;
			st += p;
			uv = pad[isHor ? 3 : 2];
			sz += -p + (uv != null ? uv.getPixels(refSize, container, cw.comp) : 0);
		}

		return new int[] {st, sz};
	}

	private void layoutInOneDim(int refSize, UnitValue align, boolean isRows, Float[] defaultPushWeights)
	{
		boolean fromEnd = !(isRows ? lc.isTopToBottom() : LayoutUtil.isLeftToRight(lc, container));
		DimConstraint[] primDCs = (isRows ? rowConstr : colConstr).getConstaints();
		FlowSizeSpec fss = isRows ? rowFlowSpecs : colFlowSpecs;
		ArrayList<LinkedDimGroup>[] rowCols = isRows ? rowGroupLists : colGroupLists;

		int[] rowColSizes = LayoutUtil.calculateSerial(fss.sizes, fss.resConstsInclGaps, defaultPushWeights, LayoutUtil.PREF, refSize);

		if (LayoutUtil.isDesignTime(container)) {
			TreeSet<Integer> indexes = isRows ? rowIndexes : colIndexes;
			int[] ixArr = new int[indexes.size()];
			int ix = 0;
			for (Integer i : indexes)
				ixArr[ix++] = i;

			putSizesAndIndexes(container.getComponent(), rowColSizes, ixArr, isRows);
		}

		int curPos = align != null ? align.getPixels(refSize - LayoutUtil.sum(rowColSizes), container, null) : 0;

		if (fromEnd)
			curPos = refSize - curPos;

		for (int i = 0 ; i < rowCols.length; i++) {
			ArrayList<LinkedDimGroup> linkedGroups = rowCols[i];
			int scIx = i - (isRows ? dockOffY : dockOffX);

			int bIx = i << 1;
			int bIx2 = bIx + 1;

			curPos += (fromEnd ? -rowColSizes[bIx] : rowColSizes[bIx]);

			DimConstraint primDC = scIx >= 0 ? primDCs[scIx >= primDCs.length ? primDCs.length - 1 : scIx] : DOCK_DIM_CONSTRAINT;

			int rowSize = rowColSizes[bIx2];

			for (LinkedDimGroup group : linkedGroups) {
				int groupSize = rowSize;
				if (group.span > 1)
					groupSize = LayoutUtil.sum(rowColSizes, bIx2, Math.min((group.span << 1) - 1, rowColSizes.length - bIx2 - 1));

				group.layout(primDC, curPos, groupSize, group.span);
			}

			curPos += (fromEnd ? -rowSize : rowSize);
		}
	}

	private static void addToSizeGroup(HashMap<String, int[]> sizeGroups, String sizeGroup, int[] size)
	{
		int[] sgSize = sizeGroups.get(sizeGroup);
		if (sgSize == null) {
			sizeGroups.put(sizeGroup, new int[] {size[LayoutUtil.MIN], size[LayoutUtil.PREF], size[LayoutUtil.MAX]});
		} else {
			sgSize[LayoutUtil.MIN] = Math.max(size[LayoutUtil.MIN], sgSize[LayoutUtil.MIN]);
			sgSize[LayoutUtil.PREF] = Math.max(size[LayoutUtil.PREF], sgSize[LayoutUtil.PREF]);
			sgSize[LayoutUtil.MAX] = Math.min(size[LayoutUtil.MAX], sgSize[LayoutUtil.MAX]);
		}
	}

	private static HashMap<String, Integer> addToEndGroup(HashMap<String, Integer> endGroups, String endGroup, int end)
	{
		if (endGroup != null) {
			if (endGroups == null)
				endGroups = new HashMap<String, Integer>(4);

			Integer oldEnd = endGroups.get(endGroup);
			if (oldEnd == null || end > oldEnd)
				endGroups.put(endGroup, end);
		}
		return endGroups;
	}

	/** Calculates Min, Preferred and Max size for the columns OR rows.
	 * @param isHor If it is the horizontal dimension to calculate.
	 * @param containerSize The reference container size in the dimension. If <= 0 it will be replaced by the actual container's size.
	 * @return The sizes in a {@link net.miginfocom.layout.Grid.FlowSizeSpec}.
	 */
	private FlowSizeSpec calcRowsOrColsSizes(boolean isHor, int containerSize)
	{
		ArrayList<LinkedDimGroup>[] groupsLists = isHor ? colGroupLists : rowGroupLists;
		Float[] defPush = isHor ? pushXs : pushYs;

		if (containerSize <= 0)
			containerSize = isHor ? container.getWidth() : container.getHeight();

		BoundSize cSz = isHor ? lc.getWidth() : lc.getHeight();
		if (!cSz.isUnset())
			containerSize = cSz.constrain(containerSize, getParentSize(container, isHor), container);

		DimConstraint[] primDCs = (isHor? colConstr : rowConstr).getConstaints();
		TreeSet<Integer> primIndexes = isHor ? colIndexes : rowIndexes;

		int[][] rowColBoundSizes = new int[primIndexes.size()][];
		HashMap<String, int[]> sizeGroupMap = new HashMap<String, int[]>(4);
		DimConstraint[] allDCs = new DimConstraint[primIndexes.size()];

		Iterator<Integer> primIt = primIndexes.iterator();
		for (int r = 0; r < rowColBoundSizes.length; r++) {
			int cellIx = primIt.next();
			int[] rowColSizes = new int[3];

			if (cellIx >= -MAX_GRID && cellIx <= MAX_GRID) {  // If not dock cell
				allDCs[r] = primDCs[cellIx >= primDCs.length ? primDCs.length - 1 : cellIx];
			} else {
				allDCs[r] = DOCK_DIM_CONSTRAINT;
			}

			ArrayList<LinkedDimGroup> groups = groupsLists[r];

			int[] groupSizes = new int[] {
					getTotalGroupsSizeParallel(groups, LayoutUtil.MIN, false),
					getTotalGroupsSizeParallel(groups, LayoutUtil.PREF, false),
					LayoutUtil.INF};

			correctMinMax(groupSizes);
			BoundSize dimSize = allDCs[r].getSize();

			for (int sType = LayoutUtil.MIN; sType <= LayoutUtil.MAX; sType++) {

				int rowColSize = groupSizes[sType];

				UnitValue uv = dimSize.getSize(sType);
				if (uv != null) {
					// If the size of the column is a link to some other size, use that instead
					int unit = uv.getUnit();
					if (unit == UnitValue.PREF_SIZE) {
						rowColSize = groupSizes[LayoutUtil.PREF];
					} else if (unit == UnitValue.MIN_SIZE) {
						rowColSize = groupSizes[LayoutUtil.MIN];
					} else if (unit == UnitValue.MAX_SIZE) {
						rowColSize = groupSizes[LayoutUtil.MAX];
					} else {
						rowColSize = uv.getPixels(containerSize, container, null);
					}
				} else if (cellIx >= -MAX_GRID && cellIx <= MAX_GRID && rowColSize == 0) {
					rowColSize = LayoutUtil.isDesignTime(container) ? LayoutUtil.getDesignTimeEmptySize() : 0;    // Empty rows with no size set gets XX pixels if design time
				}

				rowColSizes[sType] = rowColSize;
			}

			correctMinMax(rowColSizes);
			addToSizeGroup(sizeGroupMap, allDCs[r].getSizeGroup(), rowColSizes);

			rowColBoundSizes[r] = rowColSizes;
		}

		// Set/equalize the size groups to same the values.
		if (sizeGroupMap.size() > 0) {
			for (int r = 0; r < rowColBoundSizes.length; r++) {
				if (allDCs[r].getSizeGroup() != null)
					rowColBoundSizes[r] = sizeGroupMap.get(allDCs[r].getSizeGroup());
			}
		}

		// Add the gaps
		ResizeConstraint[] resConstrs = getRowResizeConstraints(allDCs);

		boolean[] fillInPushGaps = new boolean[allDCs.length + 1];
		int[][] gapSizes = getRowGaps(allDCs, containerSize, isHor, fillInPushGaps);

		FlowSizeSpec fss = mergeSizesGapsAndResConstrs(resConstrs, fillInPushGaps, rowColBoundSizes, gapSizes);

		// Spanning components are not handled yet. Check and adjust the multi-row min/pref they enforce.
		adjustMinPrefForSpanningComps(allDCs, defPush, fss, groupsLists);

		return fss;
	}

	private static int getParentSize(ComponentWrapper cw, boolean isHor)
	{
		ContainerWrapper p = cw.getParent();
		return p != null ? (isHor ? cw.getWidth() : cw.getHeight()) : 0;
	}

	private int[] getMinPrefMaxSumSize(boolean isHor)
	{
		int[][] sizes = isHor ? colFlowSpecs.sizes : rowFlowSpecs.sizes;

		int[] retSizes = new int[3];

		BoundSize sz = isHor ? lc.getWidth() : lc.getHeight();

		for (int i = 0; i < sizes.length; i++) {
			if (sizes[i] != null) {
				int[] size = sizes[i];
				for (int sType = LayoutUtil.MIN; sType <= LayoutUtil.MAX; sType++) {
					if (sz.getSize(sType) != null) {
						if (i == 0)
							retSizes[sType] = sz.getSize(sType).getPixels(getParentSize(container, isHor), container, null);
					} else {
						int s = size[sType];

						if (s != LayoutUtil.NOT_SET) {
							if (sType == LayoutUtil.PREF) {
								int bnd = size[LayoutUtil.MAX];
								if (bnd != LayoutUtil.NOT_SET && bnd < s)
									s = bnd;

								bnd = size[LayoutUtil.MIN];
								if (bnd > s)    // Includes s == LayoutUtil.NOT_SET since < 0.
									s = bnd;
							}

							retSizes[sType] += s;   // MAX compensated below.
						}

						// So that MAX is always correct.
						if (size[LayoutUtil.MAX] == LayoutUtil.NOT_SET || retSizes[LayoutUtil.MAX] > LayoutUtil.INF)
							retSizes[LayoutUtil.MAX] = LayoutUtil.INF;
					}
				}
			}
		}

		correctMinMax(retSizes);

		return retSizes;
	}

	private static ResizeConstraint[] getRowResizeConstraints(DimConstraint[] specs)
	{
		ResizeConstraint[] resConsts = new ResizeConstraint[specs.length];
		for (int i = 0; i < resConsts.length; i++)
			resConsts[i] = specs[i].resize;
		return resConsts;
	}

	private static ResizeConstraint[] getComponentResizeConstraints(ArrayList<CompWrap> compWraps, boolean isHor)
	{
		ResizeConstraint[] resConsts = new ResizeConstraint[compWraps.size()];
		for (int i = 0; i < resConsts.length; i++) {
			CC fc = compWraps.get(i).cc;
			resConsts[i] = fc.getDimConstraint(isHor).resize;

			// Always grow docking components in the correct dimension.
			int dock = fc.getDockSide();
			if (isHor ? (dock == 0 || dock == 2) : (dock == 1 || dock == 3)) {
				ResizeConstraint dc = resConsts[i];
				resConsts[i] = new ResizeConstraint(dc.shrinkPrio, dc.shrink, dc.growPrio, ResizeConstraint.WEIGHT_100);
			}
		}
		return resConsts;
	}

	private static boolean[] getComponentGapPush(ArrayList<CompWrap> compWraps, boolean isHor)
	{
		// Make one element bigger and or the after gap with the next before gap.
		boolean[] barr = new boolean[compWraps.size() + 1];
		for (int i = 0; i < barr.length; i++) {

			boolean push = i > 0 && compWraps.get(i - 1).isPushGap(isHor, false);

			if (push == false && i < (barr.length - 1))
				push = compWraps.get(i).isPushGap(isHor, true);

			barr[i] = push;
		}
		return barr;
	}

	/** Returns the row gaps in pixel sizes. One more than there are <code>specs</code> sent in.
	 * @param specs
	 * @param refSize
	 * @param isHor
	 * @param fillInPushGaps If the gaps are pushing. <b>NOTE!</b> this argument will be filled in and thus changed!
	 * @return The row gaps in pixel sizes. One more than there are <code>specs</code> sent in.
	 */
	private int[][] getRowGaps(DimConstraint[] specs, int refSize, boolean isHor, boolean[] fillInPushGaps)
	{
		BoundSize defGap = isHor ? lc.getGridGapX() : lc.getGridGapY();
		if (defGap == null)
			defGap = isHor ? PlatformDefaults.getGridGapX() : PlatformDefaults.getGridGapY();
		int[] defGapArr = defGap.getPixelSizes(refSize, container, null);

		boolean defIns = !hasDocks();

		UnitValue firstGap = LayoutUtil.getInsets(lc, isHor ? 1 : 0, defIns);
		UnitValue lastGap = LayoutUtil.getInsets(lc, isHor ? 3 : 2, defIns);

        int[][] retValues = new int[specs.length + 1][];

		for (int i = 0, wgIx = 0; i < retValues.length; i++) {
	        DimConstraint specBefore = i > 0 ? specs[i - 1] : null;
			DimConstraint specAfter = i < specs.length ? specs[i] : null;

			// No gap if between docking components.
			boolean edgeBefore = (specBefore == DOCK_DIM_CONSTRAINT || specBefore == null);
			boolean edgeAfter = (specAfter == DOCK_DIM_CONSTRAINT || specAfter == null);
			if (edgeBefore && edgeAfter)
				continue;

			BoundSize wrapGapSize = (wrapGapMap == null || isHor == lc.isFlowX() ? null : wrapGapMap.get(Integer.valueOf(wgIx++)));

			if (wrapGapSize == null) {

				int[] gapBefore = specBefore != null ? specBefore.getRowGaps(container, null, refSize, false) : null;
				int[] gapAfter = specAfter != null ? specAfter.getRowGaps(container, null, refSize, true) : null;

				if (edgeBefore && gapAfter == null && firstGap != null) {

					int bef = firstGap.getPixels(refSize, container, null);
					retValues[i] = new int[] {bef, bef, bef};

				} else if (edgeAfter && gapBefore == null && firstGap != null) {

					int aft = lastGap.getPixels(refSize, container, null);
					retValues[i] = new int[] {aft, aft, aft};

				} else {
					retValues[i] = gapAfter != gapBefore ? mergeSizes(gapAfter, gapBefore) : new int[] {defGapArr[0], defGapArr[1], defGapArr[2]};
				}

				if (specBefore != null && specBefore.isGapAfterPush() || specAfter != null && specAfter.isGapBeforePush())
					fillInPushGaps[i] = true;
			} else {

				if (wrapGapSize.isUnset()) {
					retValues[i] = new int[] {defGapArr[0], defGapArr[1], defGapArr[2]};
				} else {
					retValues[i] = wrapGapSize.getPixelSizes(refSize, container, null);
				}
				fillInPushGaps[i] = wrapGapSize.getGapPush();
			}
        }
        return retValues;
    }

	private static int[][] getGaps(ArrayList<CompWrap> compWraps, boolean isHor)
	{
		int compCount = compWraps.size();
        int[][] retValues = new int[compCount + 1][];

		retValues[0] = compWraps.get(0).getGaps(isHor, true);
        for (int i = 0; i < compCount; i++) {
	        int[] gap1 = compWraps.get(i).getGaps(isHor, false);
	        int[] gap2 = i < compCount - 1 ? compWraps.get(i + 1).getGaps(isHor, true) : null;

			retValues[i + 1] = mergeSizes(gap1, gap2);
        }

        return retValues;
    }

	private boolean hasDocks()
	{
		return (dockOffX > 0 || dockOffY > 0 || rowIndexes.last() > MAX_GRID || colIndexes.last() > MAX_GRID);
	}

	/** Adjust min/pref size for columns(or rows) that has components that spans multiple columns (or rows).
	 * @param specs The specs for the columns or rows. Last index will be used if <code>count</code> is greater than this array's length.
	 * @param defPush The default grow weight if the specs does not have anyone that will grow. Comes from "push" in the CC.
	 * @param fss
	 * @param groupsLists
	 */
	private void adjustMinPrefForSpanningComps(DimConstraint[] specs, Float[] defPush, FlowSizeSpec fss, ArrayList<LinkedDimGroup>[] groupsLists)
	{
		for (int r = groupsLists.length - 1; r >= 0; r--) { // Since 3.7.3 Iterate from end to start. Will solve some multiple spanning components hard to solve problems.
			ArrayList<LinkedDimGroup> groups = groupsLists[r];

			for (LinkedDimGroup group : groups) {
				if (group.span == 1)
					continue;

				int[] sizes = group.getMinPrefMax();
				for (int s = LayoutUtil.MIN; s <= LayoutUtil.PREF; s++) {
					int cSize = sizes[s];
					if (cSize == LayoutUtil.NOT_SET)
						continue;

					int rowSize = 0;
					int sIx = (r << 1) + 1;
					int len = Math.min((group.span << 1), fss.sizes.length - sIx) - 1;
					for (int j = sIx; j < sIx + len; j++) {
						int sz = fss.sizes[j][s];
						if (sz != LayoutUtil.NOT_SET)
							rowSize += sz;
					}

					if (rowSize < cSize && len > 0) {
						for (int eagerness = 0, newRowSize = 0; eagerness < 4 && newRowSize < cSize; eagerness++)
							newRowSize = fss.expandSizes(specs, defPush, cSize, sIx, len, s, eagerness);
					}
				}
			}
		}
	}

	/** For one dimension divide the component wraps into logical groups. One group for component wraps that share a common something,
	 * line the property to layout by base line.
	 * @param isRows If rows, and not columns, are to be divided.
	 * @return One <code>ArrayList<LinkedDimGroup></code> for every row/column.
	 */
	private ArrayList<LinkedDimGroup>[] divideIntoLinkedGroups(boolean isRows)
	{
		boolean fromEnd = !(isRows ? lc.isTopToBottom() : LayoutUtil.isLeftToRight(lc, container));
		TreeSet<Integer> primIndexes = isRows ? rowIndexes : colIndexes;
		TreeSet<Integer> secIndexes = isRows ? colIndexes : rowIndexes;
		DimConstraint[] primDCs = (isRows ? rowConstr : colConstr).getConstaints();

		@SuppressWarnings("unchecked")
		ArrayList<LinkedDimGroup>[] groupLists = new ArrayList[primIndexes.size()];

		int gIx = 0;
		for (int i : primIndexes) {

			DimConstraint dc;
			if (i >= -MAX_GRID && i <= MAX_GRID) {  // If not dock cell
				dc = primDCs[i >= primDCs.length ? primDCs.length - 1 : i];
			} else {
				dc = DOCK_DIM_CONSTRAINT;
			}

			ArrayList<LinkedDimGroup> groupList = new ArrayList<LinkedDimGroup>(4);
			groupLists[gIx++] = groupList;

			for (Integer ix : secIndexes) {
				Cell cell = isRows ? getCell(i, ix) : getCell(ix, i);
				if (cell == null || cell.compWraps.size() == 0)
					continue;

				int span = (isRows ? cell.spany : cell.spanx);
				if (span > 1)
					span = convertSpanToSparseGrid(i, span, primIndexes);

				boolean isPar = (cell.flowx == isRows);

				if ((isPar == false && cell.compWraps.size() > 1) || span > 1) {

					int linkType = isPar ? LinkedDimGroup.TYPE_PARALLEL : LinkedDimGroup.TYPE_SERIAL;
					LinkedDimGroup lg = new LinkedDimGroup("p," + ix, span, linkType, !isRows, fromEnd);
					lg.setCompWraps(cell.compWraps);
					groupList.add(lg);
				} else {
					for (int cwIx = 0; cwIx < cell.compWraps.size(); cwIx++) {
						CompWrap cw = cell.compWraps.get(cwIx);
						boolean rowBaselineAlign = (isRows && lc.isTopToBottom() && dc.getAlignOrDefault(!isRows) == UnitValue.BASELINE_IDENTITY); // Disable baseline for bottomToTop since I can not verify it working.
						boolean isBaseline = isRows && cw.isBaselineAlign(rowBaselineAlign);

						String linkCtx = isBaseline ? "baseline" : null;

						// Find a group with same link context and put it in that group.
						boolean foundList = false;
						for (int glIx = 0, lastGl = groupList.size() - 1; glIx <= lastGl; glIx++) {
							LinkedDimGroup group = groupList.get(glIx);
							if (group.linkCtx == linkCtx || linkCtx != null && linkCtx.equals(group.linkCtx)) {
								group.addCompWrap(cw);
								foundList = true;
								break;
							}
						}

						// If none found and at last add a new group.
						if (foundList == false) {
							int linkType = isBaseline ? LinkedDimGroup.TYPE_BASELINE : LinkedDimGroup.TYPE_PARALLEL;
							LinkedDimGroup lg = new LinkedDimGroup(linkCtx, 1, linkType, !isRows, fromEnd);
							lg.addCompWrap(cw);
							groupList.add(lg);
						}
					}
				}
			}
		}
		return groupLists;
	}

	/** Spanning is specified in the uncompressed grid number. They can for instance be more than 60000 for the outer
	 * edge dock grid cells. When the grid is compressed and indexed after only the cells that area occupied the span
	 * is erratic. This method use the row/col indexes and corrects the span to be correct for the compressed grid.
	 * @param span The span un the uncompressed grid. <code>LayoutUtil.INF</code> will be interpreted to span the rest
	 * of the column/row excluding the surrounding docking components.
	 * @param indexes The indexes in the correct dimension.
	 * @return The converted span.
	 */
	private static int convertSpanToSparseGrid(int curIx, int span, TreeSet<Integer> indexes)
	{
		int lastIx = curIx + span;
		int retSpan = 1;

		for (Integer ix : indexes) {
			if (ix <= curIx)
				continue;   // We have not arrived to the correct index yet

			if (ix >= lastIx)
				break;

			retSpan++;
		}
		return retSpan;
	}

	private boolean isCellFree(int r, int c, ArrayList<int[]> occupiedRects)
	{
		if (getCell(r, c) != null)
			return false;

		for (int[] rect : occupiedRects) {
			if (rect[0] <= c && rect[1] <= r && rect[0] + rect[2] > c && rect[1] + rect[3] > r)
				return false;
		}
		return true;
	}

	private Cell getCell(int r, int c)
	{
		return grid.get(Integer.valueOf((r << 16) + c));
	}

	private void setCell(int r, int c, Cell cell)
	{
		if (c < 0 || r < 0)
			throw new IllegalArgumentException("Cell position cannot be negative. row: " + r + ", col: " + c);

		if (c > MAX_GRID || r > MAX_GRID)
			throw new IllegalArgumentException("Cell position out of bounds. Out of cells. row: " + r + ", col: " + c);

		rowIndexes.add(r);
		colIndexes.add(c);

		grid.put((r << 16) + c, cell);
	}

	/** Adds a docking cell. That cell is outside the normal cell indexes.
	 * @param dockInsets The current dock insets. Will be updated!
	 * @param side top == 0, left == 1, bottom = 2, right = 3.
	 * @param cw The compwrap to put in a cell and add.
	 */
	private void addDockingCell(int[] dockInsets, int side, CompWrap cw)
	{
		int r, c, spanx = 1, spany = 1;
		switch (side) {
			case 0:
			case 2:
				r = side == 0 ? dockInsets[0]++ : dockInsets[2]--;
				c = dockInsets[1];
				spanx = dockInsets[3] - dockInsets[1] + 1;  // The +1 is for cell 0.
				colIndexes.add(dockInsets[3]); // Make sure there is a receiving cell
				break;

			case 1:
			case 3:
				c = side == 1 ? dockInsets[1]++ : dockInsets[3]--;
				r = dockInsets[0];
				spany = dockInsets[2] - dockInsets[0] + 1;  // The +1 is for cell 0.
				rowIndexes.add(dockInsets[2]); // Make sure there is a receiving cell
				break;

			default:
				throw new IllegalArgumentException("Internal error 123.");
		}

		rowIndexes.add(r);
		colIndexes.add(c);

		grid.put((r << 16) + c, new Cell(cw, spanx, spany, spanx > 1));
	}

	/** A simple representation of a cell in the grid. Contains a number of component wraps, if they span more than one cell.
	 */
	private static class Cell
	{
		private final int spanx, spany;
		private final boolean flowx;
		private final ArrayList<CompWrap> compWraps = new ArrayList<CompWrap>(2);

		private boolean hasTagged = false;  // If one or more components have styles and need to be checked by the component sorter

		private Cell(CompWrap cw)
		{
			this(cw, 1, 1, true);
		}

		private Cell(int spanx, int spany, boolean flowx)
		{
			this(null, spanx, spany, flowx);
		}

		private Cell(CompWrap cw, int spanx, int spany, boolean flowx)
		{
			if (cw != null)
				compWraps.add(cw);
			this.spanx = spanx;
			this.spany = spany;
			this.flowx = flowx;
		}
	}

	/** A number of component wraps that share a layout "something" <b>in one dimension</b>
	 */
	private static class LinkedDimGroup
	{
		private static final int TYPE_SERIAL = 0;
		private static final int TYPE_PARALLEL = 1;
		private static final int TYPE_BASELINE = 2;

		private final String linkCtx;
		private final int span;
		private final int linkType;
		private final boolean isHor, fromEnd;

		private final ArrayList<CompWrap> _compWraps = new ArrayList<CompWrap>(4);

		private int lStart = 0, lSize = 0;  // Currently mostly for debug painting

		private LinkedDimGroup(String linkCtx, int span, int linkType, boolean isHor, boolean fromEnd)
		{
			this.linkCtx = linkCtx;
			this.span = span;
			this.linkType = linkType;
			this.isHor = isHor;
			this.fromEnd = fromEnd;
		}

		private void addCompWrap(CompWrap cw)
		{
			_compWraps.add(cw);
		}

		private void setCompWraps(ArrayList<CompWrap> cws)
		{
			if (_compWraps != cws) {
				_compWraps.clear();
				_compWraps.addAll(cws);
			}
		}

		private void layout(DimConstraint dc, int start, int size, int spanCount)
		{
			lStart = start;
			lSize = size;

			if (_compWraps.isEmpty())
				return;

			ContainerWrapper parent = _compWraps.get(0).comp.getParent();
			if (linkType == TYPE_PARALLEL) {
				layoutParallel(parent, _compWraps, dc, start, size, isHor, fromEnd);
			} else if (linkType == TYPE_BASELINE) {
				layoutBaseline(parent, _compWraps, dc, start, size, LayoutUtil.PREF, spanCount);
			} else {
				layoutSerial(parent, _compWraps, dc, start, size, isHor, spanCount, fromEnd);
			}
		}

		/** Returns the min/pref/max sizes for this cell. Returned array <b>must not be altered</b>
		 * @return A shared min/pref/max array of sizes. Always of length 3 and never <code>null</code>. Will always be of type STATIC and PIXEL.
		 */
		private int[] getMinPrefMax()
		{
			int[] sizes = new int[3];
			if (!_compWraps.isEmpty()) {
				for (int sType = LayoutUtil.MIN; sType <= LayoutUtil.PREF; sType++) {
					if (linkType == TYPE_PARALLEL) {
						sizes[sType] = getTotalSizeParallel(_compWraps, sType, isHor);
					} else if (linkType == TYPE_BASELINE) {
						int[] aboveBelow = getBaselineAboveBelow(_compWraps, sType, false);
						sizes[sType] = aboveBelow[0] + aboveBelow[1];
					} else {
						sizes[sType] = getTotalSizeSerial(_compWraps, sType, isHor);
					}
				}
				sizes[LayoutUtil.MAX] = LayoutUtil.INF;
			}
			return sizes;
		}
	}

	/** Wraps a {@link java.awt.Component} together with its constraint. Caches a lot of information about the component so
	 * for instance not the preferred size has to be calculated more than once.
	 *
	 * Note! Does not ask the min/pref/max sizes again after the constructor. This means that
	 */
	private final class CompWrap
	{
		private final ComponentWrapper comp;
		private final CC cc;
		private final int eHideMode;
		private final boolean useVisualPadding;
		private boolean sizesOk = false;
		private boolean isAbsolute;

		private int[][] gaps; // [top,left(actually before),bottom,right(actually after)][min,pref,max]

		private final int[] horSizes = new int[3];
		private final int[] verSizes = new int[3];

		private int x = LayoutUtil.NOT_SET, y = LayoutUtil.NOT_SET, w = LayoutUtil.NOT_SET, h = LayoutUtil.NOT_SET;

		private int forcedPushGaps = 0;   // 1 == before, 2 = after. Bitwise.

		/**
		 * @param c
		 * @param cc
		 * @param eHideMode Effective hide mode. <= 0 means visible.
		 * @param useVisualPadding
		 */
		private CompWrap(ComponentWrapper c, CC cc, int eHideMode, boolean useVisualPadding)
		{
			this.comp = c;
			this.cc = cc;
			this.eHideMode = eHideMode;
			this.useVisualPadding = useVisualPadding;
			this.isAbsolute = cc.getHorizontal().getSize().isAbsolute() && cc.getVertical().getSize().isAbsolute();

			if (eHideMode > 1) {
				gaps = new int[4][];
				for (int i = 0; i < gaps.length; i++)
					gaps[i] = new int[3];
			}
		}

		private int[] getSizes(boolean isHor)
		{
			validateSize();
			return isHor ? horSizes : verSizes;
		}

		private void validateSize()
		{
			BoundSize[] callbackSz = getCallbackSize(comp);

			if (isAbsolute && sizesOk && callbackSz == null)
				return;

			if (eHideMode <= 0) {
				int contentBias = comp.getContentBias();

				int sizeHint = contentBias == -1 ? -1 : (contentBias == 0 ? (w != LayoutUtil.NOT_SET ? w : comp.getWidth()) : (h != LayoutUtil.NOT_SET ? h : comp.getHeight()));

				BoundSize hBS = (callbackSz != null && callbackSz[0] != null) ? callbackSz[0] : cc.getHorizontal().getSize();
				BoundSize vBS = (callbackSz != null && callbackSz[1] != null) ? callbackSz[1] : cc.getVertical().getSize();

				for (int i = LayoutUtil.MIN; i <= LayoutUtil.MAX; i++) {
					switch (contentBias) {
						case -1: // None
						default:
							horSizes[i] = getSize(hBS, i, true, useVisualPadding, -1);
							verSizes[i] = getSize(vBS, i, false, useVisualPadding, -1);
							break;
						case 0: // Hor
							horSizes[i] = getSize(hBS, i, true, useVisualPadding, -1);
							verSizes[i] = getSize(vBS, i, false, useVisualPadding, sizeHint > 0 ? sizeHint : horSizes[i]);
							break;
						case 1: // Ver
							verSizes[i] = getSize(vBS, i, false, useVisualPadding, -1);
							horSizes[i] = getSize(hBS, i, true, useVisualPadding, sizeHint > 0 ? sizeHint : verSizes[i]);
							break;
					}
				}

				correctMinMax(horSizes);
				correctMinMax(verSizes);
			} else {
				Arrays.fill(horSizes, 0); // Needed if component goes from visible -> invisible without recreating the grid.
				Arrays.fill(verSizes, 0);
			}
			sizesOk = true;
		}

		private int getSize(BoundSize uvs, int sizeType, boolean isHor, boolean useVP, int sizeHint)
		{
			int size;
			if (uvs == null || uvs.getSize(sizeType) == null) {
				switch(sizeType) {
					case LayoutUtil.MIN:
						size = isHor ? comp.getMinimumWidth(sizeHint) : comp.getMinimumHeight(sizeHint);
						break;
					case LayoutUtil.PREF:
						size = isHor ? comp.getPreferredWidth(sizeHint) : comp.getPreferredHeight(sizeHint);
						break;
					default:
						size = isHor ? comp.getMaximumWidth(sizeHint) : comp.getMaximumHeight(sizeHint);
						break;
				}
				if (useVP) {
					//Do not include visual padding when calculating layout
					int[] visualPadding = comp.getVisualPadding();

					// Assume visualPadding is of length 4: top, left, bottom, right
					if (visualPadding != null && visualPadding.length > 0)
						size -= isHor ? (visualPadding[1] + visualPadding[3]) : (visualPadding[0] + visualPadding[2]);
				}
			} else {
				ContainerWrapper par = comp.getParent();
				float refValue = isHor ? par.getWidth() : par.getHeight();
				size = uvs.getSize(sizeType).getPixels(refValue, par, comp);
			}
			return size;
		}


		private void calcGaps(ComponentWrapper before, CC befCC, ComponentWrapper after, CC aftCC, String tag, boolean flowX, boolean isLTR)
		{
			ContainerWrapper par = comp.getParent();
			int parW = par.getWidth();
			int parH = par.getHeight();

			BoundSize befGap = before != null ? (flowX ? befCC.getHorizontal() : befCC.getVertical()).getGapAfter() : null;
			BoundSize aftGap = after != null ? (flowX ? aftCC.getHorizontal() : aftCC.getVertical()).getGapBefore() : null;

			mergeGapSizes(cc.getVertical().getComponentGaps(par, comp, befGap, (flowX ? null : before), tag, parH, 0, isLTR), false, true);
			mergeGapSizes(cc.getHorizontal().getComponentGaps(par, comp, befGap, (flowX ? before : null), tag, parW, 1, isLTR), true, true);
			mergeGapSizes(cc.getVertical().getComponentGaps(par, comp, aftGap, (flowX ? null : after), tag, parH, 2, isLTR), false, false);
			mergeGapSizes(cc.getHorizontal().getComponentGaps(par, comp, aftGap, (flowX ? after : null), tag, parW, 3, isLTR), true, false);
		}

		private void setDimBounds(int start, int size, boolean isHor)
		{
			if (isHor) {
				if (start != x || w != size) {
					x = start;
					w = size;
					if (comp.getContentBias() == LayoutUtil.HORIZONTAL)
						invalidateSizes(); // Only for components that have a bias the sizes will have changed.
				}
			} else {
				if (start != y || h != size) {
					y = start;
					h = size;
					if (comp.getContentBias() == LayoutUtil.VERTICAL)
						invalidateSizes(); // Only for components that have a bias the sizes will have changed.
				}
			}
		}

		void invalidateSizes()
		{
			sizesOk = false;
		}

		private boolean isPushGap(boolean isHor, boolean isBefore)
		{
			if (isHor && ((isBefore ? 1 : 2) & forcedPushGaps) != 0)
				return true;    // Forced

			DimConstraint dc = cc.getDimConstraint(isHor);
			BoundSize s = isBefore ? dc.getGapBefore() : dc.getGapAfter();
			return s != null && s.getGapPush();
		}

		/** Transfers the bounds to the component
		 */
		private void transferBounds(boolean addVisualPadding)
		{
			if (cc.isExternal())
				return;

			int compX = x;
			int compY = y;
			int compW = w;
			int compH = h;

			if (addVisualPadding) {
				//Add the visual padding back to the component when changing its size
				int[] visualPadding = comp.getVisualPadding();
				if (visualPadding != null) {
					//assume visualPadding is of length 4: top, left, bottom, right
					compX -= visualPadding[1];
					compY -= visualPadding[0];
					compW += (visualPadding[1] + visualPadding[3]);
					compH += (visualPadding[0] + visualPadding[2]);
				}
			}

			comp.setBounds(compX, compY, compW, compH);
		}

		private void setForcedSizes(int[] sizes, boolean isHor)
		{
			if (sizes == null)
				return;

			System.arraycopy(sizes, 0, getSizes(isHor), 0, 3);
			sizesOk = true;
		}

		private void setGaps(int[] minPrefMax, int ix)
		{
			if (gaps == null)
				gaps = new int[][] {null, null, null, null};

			gaps[ix] = minPrefMax;
		}

		private void mergeGapSizes(int[] sizes, boolean isHor, boolean isTL)
		{
			if (gaps == null)
				gaps = new int[][] {null, null, null, null};

			if (sizes == null)
				return;

			int gapIX = getGapIx(isHor, isTL);
			int[] oldGaps = gaps[gapIX];
			if (oldGaps == null) {
				oldGaps = new int[] {0, 0, LayoutUtil.INF};
				gaps[gapIX] = oldGaps;
			}

			oldGaps[LayoutUtil.MIN] = Math.max(sizes[LayoutUtil.MIN], oldGaps[LayoutUtil.MIN]);
			oldGaps[LayoutUtil.PREF] = Math.max(sizes[LayoutUtil.PREF], oldGaps[LayoutUtil.PREF]);
			oldGaps[LayoutUtil.MAX] = Math.min(sizes[LayoutUtil.MAX], oldGaps[LayoutUtil.MAX]);
		}

		private int getGapIx(boolean isHor, boolean isTL)
		{
			return isHor ? (isTL ? 1 : 3) : (isTL ? 0 : 2);
		}

		private int getSizeInclGaps(int sizeType, boolean isHor)
		{
			return filter(sizeType, getGapBefore(sizeType, isHor) + getSize(sizeType, isHor) + getGapAfter(sizeType, isHor));
		}

		private int getSize(int sizeType, boolean isHor)
		{
			return filter(sizeType, getSizes(isHor)[sizeType]);
		}

		private int getGapBefore(int sizeType, boolean isHor)
		{
			int[] gaps = getGaps(isHor, true);
			return gaps != null ? filter(sizeType, gaps[sizeType]) : 0;
		}

		private int getGapAfter(int sizeType, boolean isHor)
		{
			int[] gaps = getGaps(isHor, false);
			return gaps != null ? filter(sizeType, gaps[sizeType]) : 0;
		}

		private int[] getGaps(boolean isHor, boolean isTL)
		{
			return gaps[getGapIx(isHor, isTL)];
		}

		private int filter(int sizeType, int size)
		{
			if (size == LayoutUtil.NOT_SET)
				return sizeType != LayoutUtil.MAX ? 0 : LayoutUtil.INF;
			return constrainSize(size);
		}

		private boolean isBaselineAlign(boolean defValue)
		{
			Float g = cc.getVertical().getGrow();
			if (g != null && g.intValue() != 0)
				return false;

			UnitValue al = cc.getVertical().getAlign();
			return (al != null ? al == UnitValue.BASELINE_IDENTITY : defValue) && comp.hasBaseline();
		}

		private int getBaseline(int sizeType)
		{
			return comp.getBaseline(getSize(sizeType, true), getSize(sizeType, false));
		}

		public void adjustMinHorSizeUp(int minSize)
		{
			int[] sz = getSizes(true);
			if (sz[LayoutUtil.MIN] < minSize)
				sz[LayoutUtil.MIN] = minSize;
			correctMinMax(sz);
		}
	}

	//***************************************************************************************
	//* Helper Methods
	//***************************************************************************************

	private static void layoutBaseline(ContainerWrapper parent, ArrayList<CompWrap> compWraps, DimConstraint dc, int start, int size, int sizeType, int spanCount)
	{
		int[] aboveBelow = getBaselineAboveBelow(compWraps, sizeType, true);
		int blRowSize = aboveBelow[0] + aboveBelow[1];

		CC cc = compWraps.get(0).cc;

		// Align for the whole baseline component array
		UnitValue align = cc.getVertical().getAlign();
		if (spanCount == 1 && align == null)
			align = dc.getAlignOrDefault(false);
		if (align == UnitValue.BASELINE_IDENTITY)
			align = UnitValue.CENTER;

		int offset = start + aboveBelow[0] + (align != null ? Math.max(0, align.getPixels(size - blRowSize, parent, null)) : 0);
		for (CompWrap cw : compWraps) {
			cw.y += offset;
			if (cw.y + cw.h > start + size)
				cw.h = start + size - cw.y;
		}
	}

	private static void layoutSerial(ContainerWrapper parent, ArrayList<CompWrap> compWraps, DimConstraint dc, int start, int size, boolean isHor, int spanCount, boolean fromEnd)
	{
		FlowSizeSpec fss = mergeSizesGapsAndResConstrs(
				getComponentResizeConstraints(compWraps, isHor),
		        getComponentGapPush(compWraps, isHor),
				getComponentSizes(compWraps, isHor),
				getGaps(compWraps, isHor));

		Float[] pushW = dc.isFill() ? GROW_100 : null;
		int[] sizes = LayoutUtil.calculateSerial(fss.sizes, fss.resConstsInclGaps, pushW, LayoutUtil.PREF, size);
		setCompWrapBounds(parent, sizes, compWraps, dc.getAlignOrDefault(isHor),  start, size, isHor, fromEnd);
	}

	private static void setCompWrapBounds(ContainerWrapper parent, int[] allSizes, ArrayList<CompWrap> compWraps, UnitValue rowAlign,  int start, int size, boolean isHor, boolean fromEnd)
	{
		int totSize = LayoutUtil.sum(allSizes);
		CC cc = compWraps.get(0).cc;
		UnitValue align = correctAlign(cc, rowAlign, isHor, fromEnd);

		int cSt = start;
		int slack = size - totSize;
		if (slack > 0 && align != null) {
			int al = Math.min(slack, Math.max(0, align.getPixels(slack, parent, null)));
			cSt += (fromEnd ? -al : al);
		}

		for (int i = 0, bIx = 0, iSz = compWraps.size(); i < iSz; i++) {
			CompWrap cw = compWraps.get(i);
			if (fromEnd ) {
				cSt -= allSizes[bIx++];
				cw.setDimBounds(cSt - allSizes[bIx], allSizes[bIx], isHor);
				cSt -= allSizes[bIx++];
			} else {
				cSt += allSizes[bIx++];
				cw.setDimBounds(cSt, allSizes[bIx], isHor);
				cSt += allSizes[bIx++];
			}
		}
	}

	private static void layoutParallel(ContainerWrapper parent, ArrayList<CompWrap> compWraps, DimConstraint dc, int start, int size, boolean isHor, boolean fromEnd)
	{
		int[][] sizes = new int[compWraps.size()][];    // [compIx][gapBef,compSize,gapAft]

		for (int i = 0; i < sizes.length; i++) {
			CompWrap cw = compWraps.get(i);

			DimConstraint cDc = cw.cc.getDimConstraint(isHor);

			ResizeConstraint[] resConstr = new ResizeConstraint[] {
					cw.isPushGap(isHor, true) ? GAP_RC_CONST_PUSH : GAP_RC_CONST,
					cDc.resize,
					cw.isPushGap(isHor, false) ? GAP_RC_CONST_PUSH : GAP_RC_CONST,
			};

			int[][] sz = new int[][] {
				cw.getGaps(isHor, true), cw.getSizes(isHor), cw.getGaps(isHor, false)
			};

			Float[] pushW = dc.isFill() ? GROW_100 : null;

			sizes[i] = LayoutUtil.calculateSerial(sz, resConstr, pushW, LayoutUtil.PREF, size);
		}

		UnitValue rowAlign = dc.getAlignOrDefault(isHor);
		setCompWrapBounds(parent, sizes, compWraps, rowAlign, start, size, isHor, fromEnd);
	}

	private static void setCompWrapBounds(ContainerWrapper parent, int[][] sizes, ArrayList<CompWrap> compWraps, UnitValue rowAlign,  int start, int size, boolean isHor, boolean fromEnd)
	{
		for (int i = 0; i < sizes.length; i++) {
			CompWrap cw = compWraps.get(i);

			UnitValue align = correctAlign(cw.cc, rowAlign, isHor, fromEnd);

			int[] cSizes = sizes[i];
			int gapBef = cSizes[0];
			int cSize = cSizes[1];  // No Math.min(size, cSizes[1]) here!
			int gapAft = cSizes[2];

			int cSt = fromEnd ? start - gapBef : start + gapBef;
			int slack = size - cSize - gapBef - gapAft;
			if (slack > 0 && align != null) {
				int al = Math.min(slack, Math.max(0, align.getPixels(slack, parent, null)));
				cSt += (fromEnd ? -al : al);
			}

			cw.setDimBounds(fromEnd ? cSt - cSize : cSt, cSize, isHor);
		}
	}

	private static UnitValue correctAlign(CC cc, UnitValue rowAlign, boolean isHor, boolean fromEnd)
	{
		UnitValue align = (isHor ? cc.getHorizontal() : cc.getVertical()).getAlign();
		if (align == null)
			align = rowAlign;
		if (align == UnitValue.BASELINE_IDENTITY)
			align = UnitValue.CENTER;

		if (fromEnd) {
			if (align == UnitValue.LEFT)
				align = UnitValue.RIGHT;
			else if (align == UnitValue.RIGHT)
				align = UnitValue.LEFT;
		}
		return align;
	}

	private static int[] getBaselineAboveBelow(ArrayList<CompWrap> compWraps, int sType, boolean centerBaseline)
	{
		int maxAbove = Integer.MIN_VALUE;
		int maxBelow = Integer.MIN_VALUE;
		for (CompWrap cw : compWraps) {
			int height = cw.getSize(sType, false);
			if (height >= LayoutUtil.INF)
				return new int[]{LayoutUtil.INF / 2, LayoutUtil.INF / 2};

			int baseline = cw.getBaseline(sType);
			int above = baseline + cw.getGapBefore(sType, false);
			maxAbove = Math.max(above, maxAbove);
			maxBelow = Math.max(height - baseline + cw.getGapAfter(sType, false), maxBelow);

			if (centerBaseline)
				cw.setDimBounds(-baseline, height, false);
		}
		return new int[] {maxAbove, maxBelow};
	}

	private static int getTotalSizeParallel(ArrayList<CompWrap> compWraps, int sType, boolean isHor)
	{
		int size = sType == LayoutUtil.MAX ? LayoutUtil.INF : 0;

		for (CompWrap cw : compWraps) {
			int cwSize = cw.getSizeInclGaps(sType, isHor);
			if (cwSize >= LayoutUtil.INF)
				return LayoutUtil.INF;

			if (sType == LayoutUtil.MAX ? cwSize < size : cwSize > size)
				size = cwSize;
		}
		return constrainSize(size);
	}

	private static int getTotalSizeSerial(ArrayList<CompWrap> compWraps, int sType, boolean isHor)
	{
		int totSize = 0;
		for (int i = 0, iSz = compWraps.size(), lastGapAfter = 0; i < iSz; i++) {
			CompWrap wrap = compWraps.get(i);
			int gapBef = wrap.getGapBefore(sType, isHor);
			if (gapBef > lastGapAfter)
				totSize += gapBef - lastGapAfter;

			totSize += wrap.getSize(sType, isHor);
			totSize += (lastGapAfter = wrap.getGapAfter(sType, isHor));

			if (totSize >= LayoutUtil.INF)
				return LayoutUtil.INF;
		}
		return constrainSize(totSize);
	}

	private static int getTotalGroupsSizeParallel(ArrayList<LinkedDimGroup> groups, int sType, boolean countSpanning)
	{
		int size = sType == LayoutUtil.MAX ? LayoutUtil.INF : 0;
		for (LinkedDimGroup group : groups) {
			if (countSpanning || group.span == 1) {
				int grpSize = group.getMinPrefMax()[sType];
				if (grpSize >= LayoutUtil.INF)
					return LayoutUtil.INF;

				if (sType == LayoutUtil.MAX ? grpSize < size : grpSize > size)
					size = grpSize;
			}
		}
		return constrainSize(size);
	}

	/**
	 * @param compWraps
	 * @param isHor
	 * @return Might contain LayoutUtil.NOT_SET
	 */
	private static int[][] getComponentSizes(ArrayList<CompWrap> compWraps, boolean isHor)
	{
		int[][] compSizes = new int[compWraps.size()][];
		for (int i = 0; i < compSizes.length; i++)
			compSizes[i] = compWraps.get(i).getSizes(isHor);
		return compSizes;
	}

	/** Merges sizes and gaps together with Resize Constraints. For gaps {@link #GAP_RC_CONST} is used.
	 * @param resConstr One resize constriant for every row/component. Can be lesser in length and the last element should be used for missing elements.
	 * @param gapPush If the corresponding gap should be considered pushing and thus want to take free space if left over. Should be one more than resConstrs!
	 * @param minPrefMaxSizes The sizes (min/pref/max) for every row/component.
	 * @param gapSizes The gaps before and after each row/component packed in one double sized array.
	 * @return A holder for the merged values.
	 */
	private static FlowSizeSpec mergeSizesGapsAndResConstrs(ResizeConstraint[] resConstr, boolean[] gapPush, int[][] minPrefMaxSizes, int[][] gapSizes)
	{
		int[][] sizes = new int[(minPrefMaxSizes.length << 1) + 1][];  // Make room for gaps around.
		ResizeConstraint[] resConstsInclGaps = new ResizeConstraint[sizes.length];

		sizes[0] = gapSizes[0];
		for (int i = 0, crIx = 1; i < minPrefMaxSizes.length; i++, crIx += 2) {

			// Component bounds and constraints
			resConstsInclGaps[crIx] = resConstr[i];
			sizes[crIx] = minPrefMaxSizes[i];

			sizes[crIx + 1] = gapSizes[i + 1];

			if (sizes[crIx - 1] != null)
				resConstsInclGaps[crIx - 1] = gapPush[i < gapPush.length ? i : gapPush.length - 1] ? GAP_RC_CONST_PUSH : GAP_RC_CONST;

			if (i == (minPrefMaxSizes.length - 1) && sizes[crIx + 1] != null)
				resConstsInclGaps[crIx + 1] = gapPush[(i + 1) < gapPush.length ? (i + 1) : gapPush.length - 1] ? GAP_RC_CONST_PUSH : GAP_RC_CONST;
		}

		// Check for null and set it to 0, 0, 0.
		for (int i = 0; i < sizes.length; i++) {
			if (sizes[i] == null)
				sizes[i] = new int[3];
		}

		return new FlowSizeSpec(sizes, resConstsInclGaps);
	}

	private static int[] mergeSizes(int[] oldValues, int[] newValues)
	{
		if (oldValues == null)
			return newValues;

		if (newValues == null)
			return oldValues;

		int[] ret = new int[oldValues.length];
		for (int i = 0; i < ret.length; i++)
			ret[i] = mergeSizes(oldValues[i], newValues[i], true);

		return ret;
	}

	private static int mergeSizes(int oldValue, int newValue, boolean toMax)
	{
		if (oldValue == LayoutUtil.NOT_SET || oldValue == newValue)
			return newValue;

		if (newValue == LayoutUtil.NOT_SET)
			return oldValue;

		return toMax != oldValue > newValue ? newValue : oldValue;
	}

	private static int constrainSize(int s)
	{
		return s > 0 ? (s < LayoutUtil.INF ? s : LayoutUtil.INF) : 0;
	}

	private static void correctMinMax(int s[])
	{
		if (s[LayoutUtil.MIN] > s[LayoutUtil.MAX])
			s[LayoutUtil.MIN] = s[LayoutUtil.MAX];  // Since MAX is almost always explicitly set use that

		if (s[LayoutUtil.PREF] < s[LayoutUtil.MIN])
			s[LayoutUtil.PREF] = s[LayoutUtil.MIN];

		if (s[LayoutUtil.PREF] > s[LayoutUtil.MAX])
			s[LayoutUtil.PREF] = s[LayoutUtil.MAX];
	}

	private static final class FlowSizeSpec
	{
		private final int[][] sizes;  // [row/col index][min, pref, max]
		private final ResizeConstraint[] resConstsInclGaps;  // [row/col index]

		private FlowSizeSpec(int[][] sizes, ResizeConstraint[] resConstsInclGaps)
		{
			this.sizes = sizes;
			this.resConstsInclGaps = resConstsInclGaps;
		}

		/**
		 * @param specs The specs for the columns or rows. Last index will be used of <code>fromIx + len</code> is greater than this array's length.
		 * @param targetSize The size to try to meet.
		 * @param defGrow The default grow weight if the specs does not have anyone that will grow. Comes from "push" in the CC.
		 * @param fromIx
		 * @param len
		 * @param sizeType
		 * @param eagerness How eager the algorithm should be to try to expand the sizes.
		 * <ul>
		 * <li>0 - Grow only rows/columns which have the <code>sizeType</code> set to be the containing components AND which has a grow weight &gt; 0.
		 * <li>1 - Grow only rows/columns which have the <code>sizeType</code> set to be the containing components AND which has a grow weight &gt; 0 OR unspecified.
		 * <li>2 - Grow all rows/columns that have a grow weight &gt; 0.
		 * <li>3 - Grow all rows/columns that have a grow weight &gt; 0 OR unspecified.
		 * </ul>
		 * @return The new size.
		 */
		private int expandSizes(DimConstraint[] specs, Float[] defGrow, int targetSize, int fromIx, int len, int sizeType, int eagerness)
		{
			ResizeConstraint[] resConstr = new ResizeConstraint[len];
			int[][] sizesToExpand = new int[len][];
			for (int i = 0; i < len; i++) {
				int[] minPrefMax = sizes[i + fromIx];
				sizesToExpand[i] = new int[] {minPrefMax[sizeType], minPrefMax[LayoutUtil.PREF], minPrefMax[LayoutUtil.MAX]};

				if (eagerness <= 1 && i % 2 == 0) { // (i % 2 == 0) means only odd indexes, which is only rows/col indexes and not gaps.
					int cIx = (i + fromIx - 1) >> 1;
					DimConstraint spec = (DimConstraint) LayoutUtil.getIndexSafe(specs, cIx);

					BoundSize sz = spec.getSize();
					if (    (sizeType == LayoutUtil.MIN && sz.getMin() != null && sz.getMin().getUnit() != UnitValue.MIN_SIZE) ||
					        (sizeType == LayoutUtil.PREF && sz.getPreferred() != null && sz.getPreferred().getUnit() != UnitValue.PREF_SIZE)) {
						continue;
					}
				}
				resConstr[i] = (ResizeConstraint) LayoutUtil.getIndexSafe(resConstsInclGaps, i + fromIx);
			}

			Float[] growW = (eagerness == 1 || eagerness == 3) ? extractSubArray(specs, defGrow, fromIx, len): null;
			int[] newSizes = LayoutUtil.calculateSerial(sizesToExpand, resConstr, growW, LayoutUtil.PREF, targetSize);
			int newSize = 0;

			for (int i = 0; i < len; i++) {
				int s = newSizes[i];
				sizes[i + fromIx][sizeType] = s;
				newSize += s;
			}
			return newSize;
		}
	}

	private static Float[] extractSubArray(DimConstraint[] specs, Float[] arr, int ix, int len)
	{
		if (arr == null || arr.length < ix + len) {
			Float[] growLastArr = new Float[len];

			// Handle a group where some rows (first one/few and/or last one/few) are docks.
			for (int i = ix + len - 1; i >= 0; i -= 2) {
				int specIx = (i >> 1);
				if (specs[specIx] != DOCK_DIM_CONSTRAINT) {
					growLastArr[i - ix] = ResizeConstraint.WEIGHT_100;
					return growLastArr;
				}
			}
			return growLastArr;
		}

		Float[] newArr = new Float[len];
		for (int i = 0; i < len; i++)
			newArr[i] = arr[ix + i];
		return newArr;
	}

	private static WeakHashMap<Object, int[][]>[] PARENT_ROWCOL_SIZES_MAP = null;
	@SuppressWarnings( "unchecked" )
	private static synchronized void putSizesAndIndexes(Object parComp, int[] sizes, int[] ixArr, boolean isRows)
	{
		if (PARENT_ROWCOL_SIZES_MAP == null)    // Lazy since only if designing in IDEs
			PARENT_ROWCOL_SIZES_MAP = new WeakHashMap[] {new WeakHashMap<Object,int[][]>(4), new WeakHashMap<Object,int[][]>(4)};

		PARENT_ROWCOL_SIZES_MAP[isRows ? 0 : 1].put(parComp, new int[][]{ixArr, sizes});
	}

	static synchronized int[][] getSizesAndIndexes(Object parComp, boolean isRows)
	{
		if (PARENT_ROWCOL_SIZES_MAP == null)
			return null;

		return PARENT_ROWCOL_SIZES_MAP[isRows ? 0 : 1].get(parComp);
	}

	private static WeakHashMap<Object, ArrayList<WeakCell>> PARENT_GRIDPOS_MAP = null;
	private static synchronized void saveGrid(ComponentWrapper parComp, LinkedHashMap<Integer, Cell> grid)
	{
		if (PARENT_GRIDPOS_MAP == null)    // Lazy since only if designing in IDEs
			PARENT_GRIDPOS_MAP = new WeakHashMap<Object, ArrayList<WeakCell>>(4);

		ArrayList<WeakCell> weakCells = new ArrayList<WeakCell>(grid.size());

		for (Map.Entry<Integer, Cell> e : grid.entrySet()) {
			Cell cell = e.getValue();
			Integer xyInt = e.getKey();
			if (xyInt != null) {
				int x = xyInt & 0x0000ffff;
				int y = xyInt >> 16;

				for (CompWrap cw : cell.compWraps)
					weakCells.add(new WeakCell(cw.comp.getComponent(), x, y, cell.spanx, cell.spany));
			}
		}

		PARENT_GRIDPOS_MAP.put(parComp.getComponent(), weakCells);
	}

	static synchronized HashMap<Object, int[]> getGridPositions(Object parComp)
	{
		ArrayList<WeakCell> weakCells = PARENT_GRIDPOS_MAP != null ? PARENT_GRIDPOS_MAP.get(parComp) : null;
		if (weakCells == null)
			return null;

		HashMap<Object, int[]> retMap = new HashMap<Object, int[]>();

		for (WeakCell wc : weakCells) {
			Object component = wc.componentRef.get();
			if (component != null)
				retMap.put(component, new int[] {wc.x, wc.y, wc.spanX, wc.spanY});
		}

		return retMap;
	}

	private static class WeakCell
	{
		private final WeakReference<Object> componentRef;
		private final int x, y, spanX, spanY;

		private WeakCell(Object component, int x, int y, int spanX, int spanY)
		{
			this.componentRef = new WeakReference<Object>(component);
			this.x = x;
			this.y = y;
			this.spanX = spanX;
			this.spanY = spanY;
		}
	}
}