package com.googlecode.bpmn_simulator.test.logic;

import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;

import com.googlecode.bpmn_simulator.animation.element.logical.LogicalFlowElement;
import com.googlecode.bpmn_simulator.animation.input.Definition;
import com.googlecode.bpmn_simulator.animation.token.RootInstances;
import com.googlecode.bpmn_simulator.animation.token.TokenFlow;

public class AnimationStateSequence
		extends AbstractStateSequence<AttributedElementsState<String, Integer>> {

	private final Definition<?> definition;

	private final TokenFlow startElement;

	private final Map<String, LogicalFlowElement> elements = new HashMap<>();

	public AnimationStateSequence(final Definition<?> definition, final TokenFlow startElement) {
		super();
		this.definition = definition;
		this.startElement = startElement;
		readElements();
	}

	@Override
	public Iterator<AttributedElementsState<String, Integer>> iterator() {
		return new AnimationIterator();
	}

	private void readElements() {
		for (final LogicalFlowElement flowElement : definition.getFlowElements()) {
			elements.put(flowElement.toString(), flowElement);
		}
	}

	public Set<Integer> getElementAttributes(final String id) {
		final Set<Integer> attributes = new HashSet<>();
		final LogicalFlowElement flowElement = elements.get(id);
		if (flowElement != null) {
			attributes.add(Integer.valueOf(flowElement.getTokens().size()));
		}
		return attributes;
	}

	private class AnimationIterator
			implements Iterator<AttributedElementsState<String, Integer>> {

		private final RootInstances instances = new RootInstances();

		public AnimationIterator() {
			super();
			instances.addNewChildInstance().createNewToken(startElement);
		}

		@Override
		public boolean hasNext() {
			return instances.hasChildInstances();
		}

		private AttributedElementsState<String, Integer>  copyState() {
			final Set<String> elements = AnimationStateSequence.this.elements.keySet();
			final StaticAttributedElementsState<String, Integer> state = new StaticAttributedElementsState<>(elements);
			for (final String element : elements) {
				final LogicalFlowElement flowElement = AnimationStateSequence.this.elements.get(element);
				final int tokenCount = flowElement.getTokens().size();
				if (tokenCount > 0) {
					state.addAttribute(element, Integer.valueOf(tokenCount));
				}
			}
			return state;
		}

		@Override
		public AttributedElementsState<String, Integer> next() {
			instances.step(1);
			return copyState();
		}

	}

}

@@ -2565,14 +2565,102 @@
 );%0A%09%09%7D%0A%0A
+%09%09@Override%0A%09%09public void remove() %7B%0A%09%09%09throw new UnsupportedOperationException();%0A%09%09%7D%0A%0A
 %09%7D%0A%0A%7D%0A

build fix for java 7