net.sourceforge.plantuml.salt.Positionner2 Maven / Gradle / Ivy

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package net.sourceforge.plantuml.salt;

import java.util.Collections;
import java.util.LinkedHashMap;
import java.util.Map;

import net.sourceforge.plantuml.salt.element.Element;

public class Positionner2 {

	private int row;
	private int col;

	private int maxRow;
	private int maxCol;

	private final Map positions = new LinkedHashMap();

	private Cell last;

	public void add(Terminated element) {
		addWithoutMove(element.getElement());
		final Terminator terminator = element.getTerminator();
		if (terminator == Terminator.NEWCOL) {
			moveNextColumn();
		} else {
			moveNextRow();
		}
	}

	private void moveNextColumn() {
		col++;
	}

	private void moveNextRow() {
		row++;
		col = 0;
	}

	private void addWithoutMove(Element elmt) {
		last = new Cell(row, col);
		positions.put(elmt, last);
		updateMax();
	}

	public void mergeLeft(Terminator terminator) {
		updateMax();
		if (terminator == Terminator.NEWCOL) {
			col++;
		} else {
			row++;
			col = 0;
		}
		last.mergeLeft();
	}

	private void updateMax() {
		if (row > maxRow) {
			maxRow = row;
		}
		if (col > maxCol) {
			maxCol = col;
		}
	}

	public Map getAll() {
		return Collections.unmodifiableMap(positions);
	}

	public final int getNbRows() {
		return maxRow + 1;
	}

	public final int getNbCols() {
		return maxCol + 1;
	}

}