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package net.java.textilej.parser.markup;

import java.util.HashMap;
import java.util.Map;
import java.util.UUID;

import net.java.textilej.parser.IdGenerator;
import net.java.textilej.parser.Locator;

/**
 * State related to parsing content, propagated to {@link Block blocks}
 * and other {@link Processor processors} during the parse phase.
 *  
 * @author dgreen
 */
public class ContentState implements Locator {
	private Map footnoteIdToHtmlId = new HashMap();
	private Map glossaryItems = new HashMap();
	
	private String markupContent;
	private IdGenerator idGenerator = new IdGenerator();
	
	private int lineNumber = -1;
	private int lineOffset = -1;
	private int lineCharacterOffset = 0;
	private int lineLength = 0;
	private int lineSegmentEndOffset;
	
	public ContentState() {}
	
	public String getMarkupContent() {
		return markupContent;
	}
	
	protected void setMarkupContent(String markupContent) {
		this.markupContent = markupContent;
	}

	public String getFootnoteId(String footnote) {
		String id = footnoteIdToHtmlId.get(footnote);
		if (id == null) {
			id = "fn"+UUID.randomUUID().toString().replace("-", "");
			footnoteIdToHtmlId.put(footnote,id);
		}
		return id;
	}

	/**
	 * Add a glossary term (typically an acronym) with its definition.
	 * Has no effect if the term is already present in the glossary and the given definition is shorter or equal in length
	 * to the existing definition.
	 * 
	 * @param term the term to add
	 * @param definition the definition of the term.
	 */
	public void addGlossaryTerm(String term, String definition) {
		String previousDef = glossaryItems.put(term, definition);
		if (previousDef != null && previousDef.length() > definition.length()) {
			glossaryItems.put(term, previousDef);
		}
	}
	
	/**
	 * Get the glossary as a map of definition by acronym or term.
	 */
	public Map getGlossaryTerms() {
		return glossaryItems;
	}

	public IdGenerator getIdGenerator() {
		return idGenerator;
	}

	/**
	 * Get the 1-based line number of the current line.
	 * @return the line number or -1 if it is unknown.
	 */
	public int getLineNumber() {
		return lineNumber;
	}

	/**
	 * the 1-based line number of the current line.
	 */
	protected void setLineNumber(int lineNumber) {
		this.lineNumber = lineNumber;
	}

	/**
	 * the 0-based character offset of the current line.
	 * @return the offset or -1 if it is unknown.
	 */
	public int getLineOffset() {
		return lineOffset;
	}

	/**
	 * the 0-based character offset of the current line.
	 */
	protected void setLineOffset(int lineOffset) {
		this.lineOffset = lineOffset;
	}

	public int getLineDocumentOffset() {
		return lineOffset;
	}
	
	public int getLineCharacterOffset() {
		return lineCharacterOffset;
	}

	public void setLineCharacterOffset(int lineCharacterOffset) {
		this.lineCharacterOffset = lineCharacterOffset;
	}

	public int getDocumentOffset() {
		return lineOffset + lineCharacterOffset;
	}

	public int getLineLength() {
		return lineLength;
	}

	public void setLineLength(int lineLength) {
		this.lineLength = lineLength;
	}

	public void setLineSegmentEndOffset(int lineSegmentEndOffset) {
		this.lineSegmentEndOffset = lineSegmentEndOffset;
	}

	public int getLineSegmentEndOffset() {
		return lineSegmentEndOffset;
	}
		
}