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PlantUML is a component that allows to quickly write diagrams from text.
// THIS FILE HAS BEEN GENERATED BY A PREPROCESSOR.
package net.sourceforge.plantuml.bpm;
import net.sourceforge.plantuml.bpm.ConnectorPuzzle.Where;
public class CleanerInterleavingLines implements GridCleaner {
public boolean clean(Grid grid) {
// System.err.println("running CleanerInterleavingLines");
boolean result = false;
Line previous = null;
for (Line line : grid.lines().toList()) {
if (previous != null) {
if (mergeable(grid, previous, line)) {
// System.err.println("MERGEABLE! " + previous + " " + line);
mergeLines(grid, previous, line);
return true;
}
}
previous = line;
}
return result;
}
private void mergeLines(Grid grid, Line line1, Line line2) {
for (Col col : grid.cols().toList()) {
final Cell cell1 = grid.getCell(line1, col);
final Cell cell2 = grid.getCell(line2, col);
cell1.setData(merge(cell1.getData(), cell2.getData()));
cell2.setData(null);
}
grid.removeLine(line2);
}
private boolean mergeable(Grid grid, Line line1, Line line2) {
// int c = 0;
for (Col col : grid.cols().toList()) {
// System.err.println("c=" + c);
// c++;
final Placeable cell1 = grid.getCell(line1, col).getData();
final Placeable cell2 = grid.getCell(line2, col).getData();
// System.err.println("cells=" + cell1 + " " + cell2 + " " + mergeable(cell1,
// cell2));
if (mergeable(cell1, cell2) == false) {
return false;
}
}
return true;
}
private Placeable merge(Placeable data1, Placeable data2) {
if (data1 == null) {
return data2;
}
if (data2 == null) {
return data1;
}
assert data1 != null && data2 != null;
if (data1 instanceof BpmElement) {
return data1;
}
if (data2 instanceof BpmElement) {
final ConnectorPuzzleEmpty puz1 = (ConnectorPuzzleEmpty) data1;
if (puz1.checkDirections("SW")) {
((BpmElement) data2).remove(Where.NORTH);
((BpmElement) data2).append(Where.WEST);
}
return data2;
}
assert data1 instanceof ConnectorPuzzleEmpty && data2 instanceof ConnectorPuzzleEmpty;
final ConnectorPuzzleEmpty puz1 = (ConnectorPuzzleEmpty) data1;
final ConnectorPuzzleEmpty puz2 = (ConnectorPuzzleEmpty) data2;
return puz2;
}
private boolean mergeable(Placeable data1, Placeable data2) {
if (data1 == null || data2 == null) {
return true;
}
assert data1 != null && data2 != null;
if (data1 instanceof ConnectorPuzzleEmpty && data2 instanceof ConnectorPuzzleEmpty) {
return mergeableCC((ConnectorPuzzleEmpty) data1, (ConnectorPuzzleEmpty) data2);
}
if (data1 instanceof ConnectorPuzzleEmpty && data2 instanceof BpmElement) {
final boolean result = mergeablePuzzleSingle((ConnectorPuzzleEmpty) data1, (BpmElement) data2);
// System.err.println("OTHER2=" + data2 + " " + data1 + " " + result);
return result;
}
if (data2 instanceof ConnectorPuzzleEmpty && data1 instanceof BpmElement) {
final boolean result = mergeablePuzzleSingle((BpmElement) data1, (ConnectorPuzzleEmpty) data2);
// System.err.println("OTHER1=" + data1 + " " + data2 + " " + result);
return result;
}
return false;
}
private boolean mergeablePuzzleSingle(ConnectorPuzzleEmpty data1, BpmElement data2) {
if (data1.checkDirections("NS")) {
return true;
}
if (data1.checkDirections("SW")) {
return true;
}
return false;
}
private boolean mergeablePuzzleSingle(BpmElement data1, ConnectorPuzzleEmpty data2) {
if (data2.checkDirections("NS")) {
return true;
}
return false;
}
private boolean mergeableCC(ConnectorPuzzleEmpty puz1, ConnectorPuzzleEmpty puz2) {
if (puz1.checkDirections("NS") && puz2.checkDirections("NS")) {
return true;
}
if (puz1.checkDirections("NS") && puz2.checkDirections("NE")) {
return true;
}
if (puz1.checkDirections("NS") && puz2.checkDirections("NW")) {
return true;
}
return false;
}
}