net.sourceforge.plantuml.sequencediagram.graphic.ConstraintSet Maven / Gradle / Ivy
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PlantUML is a component that allows to quickly write :
* sequence diagram,
* use case diagram,
* class diagram,
* activity diagram,
* component diagram,
* state diagram
* object diagram
/* ========================================================================
* PlantUML : a free UML diagram generator
* ========================================================================
*
* (C) Copyright 2009-2013, Arnaud Roques
*
* Project Info: http://plantuml.sourceforge.net
*
* This file is part of PlantUML.
*
* PlantUML is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* PlantUML distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
* License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* Original Author: Arnaud Roques
*
* Revision $Revision: 9786 $
*
*/
package net.sourceforge.plantuml.sequencediagram.graphic;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import net.sourceforge.plantuml.graphic.StringBounder;
class ConstraintSet {
private final ParticipantBoxSimple firstBorder;
private final ParticipantBoxSimple lastborder;
final private List participantList = new ArrayList();
final private Map, Constraint> constraints = new HashMap, Constraint>();
public ConstraintSet(Collection all, double freeX) {
this.participantList.add(firstBorder = new ParticipantBoxSimple(0, "LEFT"));
this.participantList.addAll(all);
this.participantList.add(lastborder = new ParticipantBoxSimple(freeX, "RIGHT"));
}
@Override
public String toString() {
return constraints.values().toString();
}
public double getMaxX() {
return lastborder.getCenterX(null);
}
public Constraint getConstraint(Pushable p1, Pushable p2) {
if (p1 == null || p2 == null || p1 == p2) {
throw new IllegalArgumentException();
}
final int i1 = participantList.indexOf(p1);
final int i2 = participantList.indexOf(p2);
if (i1 == -1 || i2 == -1) {
throw new IllegalArgumentException();
}
if (i1 > i2) {
return getConstraint(p2, p1);
}
final List key = Arrays.asList(p1, p2);
Constraint result = constraints.get(key);
if (result == null) {
result = new Constraint(p1, p2);
constraints.put(key, result);
}
return result;
}
public Constraint getConstraintAfter(Pushable p1) {
if (p1 == null) {
throw new IllegalArgumentException();
}
return getConstraint(p1, getNext(p1));
}
public Constraint getConstraintBefore(Pushable p1) {
if (p1 == null) {
throw new IllegalArgumentException();
}
return getConstraint(p1, getPrevious(p1));
}
public Pushable getPrevious(Pushable p) {
return getOtherParticipant(p, -1);
}
public Pushable getNext(Pushable p) {
return getOtherParticipant(p, 1);
}
private Pushable getOtherParticipant(Pushable p, int delta) {
final int i = participantList.indexOf(p);
if (i == -1) {
throw new IllegalArgumentException();
}
return participantList.get(i + delta);
}
public void takeConstraintIntoAccount(StringBounder stringBounder) {
for (int dist = 1; dist < participantList.size(); dist++) {
pushEverybody(stringBounder, dist);
}
}
private void pushEverybody(StringBounder stringBounder, int dist) {
for (int i = 0; i < participantList.size() - dist; i++) {
final Pushable p1 = participantList.get(i);
final Pushable p2 = participantList.get(i + dist);
final Constraint c = getConstraint(p1, p2);
ensureSpaceAfter(stringBounder, p1, p2, c.getValue());
}
}
public void pushToLeftParticipantBox(double deltaX, Pushable firstToChange, boolean including) {
if (deltaX <= 0) {
throw new IllegalArgumentException();
}
if (firstToChange == null) {
throw new IllegalArgumentException();
}
// freeX += deltaX;
boolean founded = false;
for (Pushable box : participantList) {
if (box.equals(firstToChange)) {
founded = true;
if (including==false) {
continue;
}
}
if (founded) {
box.pushToLeft(deltaX);
}
}
}
public void pushToLeft(double delta) {
pushToLeftParticipantBox(delta, firstBorder, true);
}
private void ensureSpaceAfter(StringBounder stringBounder, Pushable p1, Pushable p2, double space) {
if (p1.equals(p2)) {
throw new IllegalArgumentException();
}
if (p1.getCenterX(stringBounder) > p2.getCenterX(stringBounder)) {
ensureSpaceAfter(stringBounder, p2, p1, space);
return;
}
assert p1.getCenterX(stringBounder) < p2.getCenterX(stringBounder);
final double existingSpace = p2.getCenterX(stringBounder) - p1.getCenterX(stringBounder);
if (existingSpace < space) {
pushToLeftParticipantBox(space - existingSpace, p2, true);
}
}
public final Pushable getFirstBorder() {
return firstBorder;
}
public final Pushable getLastborder() {
return lastborder;
}
}