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/*****************************************************************************
* Copyright (c) 2011 Atos Origin.
*
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Atos Origin - Initial API and implementation
*
*****************************************************************************/
package org.eclipse.papyrus.uml.diagram.activity.draw2d;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import org.eclipse.draw2d.FlowLayout;
import org.eclipse.draw2d.IFigure;
import org.eclipse.draw2d.geometry.Dimension;
import org.eclipse.draw2d.geometry.Rectangle;
/**
* Layout to create a row (or colunm) layout All children will be displayer
* under the previous one You can add constraint with {@link FlowLayoutAdvancedConstraint}
*
* @author arthur daussy - arthur.daussy@atosorigin.com
*
*/
public class FlowLayoutAdvanced extends FlowLayout {
/***
* Orientation of the layout
*
* @author adaussy
*
*/
public enum Orientation {
HORIZONTAL, VERTICAL
}
/**
* Not implemented yet TODO
*/
private Orientation orientation = Orientation.VERTICAL;
private Map<IFigure, Object> constraints = new HashMap<IFigure, Object>();
@Override
protected void setBoundsOfChild(IFigure parent, IFigure child, Rectangle bounds) {
parent.getClientArea(Rectangle.SINGLETON);
bounds.translate(Rectangle.SINGLETON.x, Rectangle.SINGLETON.y);
Dimension childDim = this.getChildSize(child, Rectangle.SINGLETON.width, Rectangle.SINGLETON.height).getCopy();
bounds.setSize(childDim);
Object _constraint = getConstraint(child);
if (_constraint instanceof FlowLayoutAdvancedConstraint) {
FlowLayoutAdvancedConstraint constraint = (FlowLayoutAdvancedConstraint) _constraint;
if (constraint != null) {
if (constraint.isFill()) {
if (Orientation.VERTICAL.equals(orientation)) {
bounds.setSize(bounds.getSize().getCopy().width, getAvailableSpaceForFilledElement(child, Rectangle.SINGLETON.getSize().getCopy()).getCopy().height);
} else {
bounds.setSize(getAvailableSpaceForFilledElement(child, Rectangle.SINGLETON.getSize().getCopy()).getCopy().width, bounds.getSize().getCopy().height);
}
}
if (constraint.isFull()) {
bounds.setSize(Rectangle.SINGLETON.getSize().getCopy());
bounds.setLocation(Rectangle.SINGLETON.getLocation().getCopy());
}
}
}
child.setBounds(bounds);
}
@Override
public Object getConstraint(IFigure child) {
return constraints.get(child);
}
/**
*
* @see org.eclipse.draw2d.AbstractLayout#setConstraint(org.eclipse.draw2d.IFigure, java.lang.Object) Use this kind of constraint {@link FlowLayoutAdvancedConstraint}
* @param child
* @param constraint
*/
@Override
public void setConstraint(IFigure child, Object constraint) {
if (constraint instanceof FlowLayoutAdvancedConstraint || constraint == null) {
constraints.put(child, constraint);
}
}
private Dimension getAvailableSpaceForFilledElement(IFigure currentChild, Dimension parentDim) {
Set<IFigure> children = constraints.keySet();
if (children.isEmpty()) {
throw new RuntimeException("Current layout is not set on any figure");// TODO
// externalize
}
int numberOfFilledElement = 0;
for (Object _child : children) {
if (_child instanceof IFigure) {
IFigure child = (IFigure) _child;
if (constraints.containsKey(child)) {
FlowLayoutAdvancedConstraint localConstraint = (FlowLayoutAdvancedConstraint) constraints.get(child);
if (localConstraint != null && localConstraint.isFill()) {
numberOfFilledElement++;
}
}
/*
* TODO set with the orientation attribute
*/
if (!child.equals(currentChild)) {
parentDim = parentDim.getShrinked(0, getChildSize(child, Rectangle.SINGLETON.width, Rectangle.SINGLETON.height).height);
}
}
}
if (Orientation.VERTICAL.equals(orientation)) {
parentDim.setHeight((int) ((float) parentDim.height / (float) numberOfFilledElement));
// parentDim.setWidth(0);
} else {
parentDim.setWidth((int) ((float) parentDim.width / (float) numberOfFilledElement));
// parentDim.setHeight(0);
}
return parentDim;
}
public Orientation getOrientation() {
return orientation;
}
public void setOrientation(Orientation orientation) {
this.orientation = orientation;
}
@Override
public Dimension getMinimumSize(IFigure container, int w, int h) {
Dimension minDim = null;
for (IFigure figure : constraints.keySet()) {
Object _c = constraints.get(figure);
if (_c instanceof FlowLayoutAdvancedConstraint) {
FlowLayoutAdvancedConstraint constraint = (FlowLayoutAdvancedConstraint) _c;
if (constraint.isHasMinsize()) {
if (minDim == null) {
minDim = figure.getMinimumSize();
} else {
minDim = Dimension.min(minDim, figure.getMinimumSize());
}
}
}
}
if (minDim == null) {
minDim = new Dimension(0, 0);
}
return minDim;
}
}
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