htmlworker.java

源码包含生成 PDF 和 HTML 的类库

				if (!h.containsKey(ElementTags.FACE)) {
					h.put(ElementTags.FACE, "Courier");
				}
				cprops.addToChain(tag, h);
				isPRE = true;
				return;
			}
			if (tag.equals("p")) {
				cprops.addToChain(tag, h);
				currentParagraph = FactoryProperties.createParagraph(h);
				return;
			}
			if (tag.equals("tr")) {
				if (pendingTR)
					endElement("tr");
				skipText = true;
				pendingTR = true;
				cprops.addToChain("tr", h);
				return;
			}
			if (tag.equals("td") || tag.equals("th")) {
				if (pendingTD)
					endElement(tag);
				skipText = false;
				pendingTD = true;
				cprops.addToChain("td", h);
				stack.push(new IncCell(tag, cprops));
				return;
			}
			if (tag.equals("table")) {
				cprops.addToChain("table", h);
				IncTable table = new IncTable(h);
				stack.push(table);
				tableState.push(new boolean[] { pendingTR, pendingTD });
				pendingTR = pendingTD = false;
				skipText = true;
				return;
			}
		} catch (Exception e) {
			throw new ExceptionConverter(e);
		}
	}

	public void endElement(String tag) {
		if (!tagsSupported.containsKey(tag))
			return;
		try {
			String follow = (String) FactoryProperties.followTags.get(tag);
			if (follow != null) {
				cprops.removeChain(follow);
				return;
			}
			if (tag.equals("font") || tag.equals("span")) {
				cprops.removeChain(tag);
				return;
			}
			if (tag.equals("a")) {
				if (currentParagraph == null) {
					currentParagraph = new Paragraph();
				}
				boolean skip = false;
				if (interfaceProps != null) {
					ALink i = (ALink) interfaceProps.get("alink_interface");
					if (i != null)
						skip = i.process(currentParagraph, cprops);
				}
				if (!skip) {
					String href = cprops.getProperty("href");
					if (href != null) {
						ArrayList chunks = currentParagraph.getChunks();
						int size = chunks.size();
						for (int k = 0; k < size; ++k) {
							Chunk ck = (Chunk) chunks.get(k);
							ck.setAnchor(href);
						}
					}
				}
				Paragraph tmp = (Paragraph) stack.pop();
				Phrase tmp2 = new Phrase();
				tmp2.add(currentParagraph);
				tmp.add(tmp2);
				currentParagraph = tmp;
				cprops.removeChain("a");
				return;
			}
			if (tag.equals("br")) {
				return;
			}
			if (currentParagraph != null) {
				if (stack.empty())
					document.add(currentParagraph);
				else {
					Object obj = stack.pop();
					if (obj instanceof TextElementArray) {
						TextElementArray current = (TextElementArray) obj;
						current.add(currentParagraph);
					}
					stack.push(obj);
				}
			}
			currentParagraph = null;
			if (tag.equals(HtmlTags.UNORDEREDLIST)
					|| tag.equals(HtmlTags.ORDEREDLIST)) {
				if (pendingLI)
					endElement(HtmlTags.LISTITEM);
				skipText = false;
				cprops.removeChain(tag);
				if (stack.empty())
					return;
				Object obj = stack.pop();
				if (!(obj instanceof com.lowagie.text.List)) {
					stack.push(obj);
					return;
				}
				if (stack.empty())
					document.add((Element) obj);
				else
					((TextElementArray) stack.peek()).add(obj);
				return;
			}
			if (tag.equals(HtmlTags.LISTITEM)) {
				pendingLI = false;
				skipText = true;
				cprops.removeChain(tag);
				if (stack.empty())
					return;
				Object obj = stack.pop();
				if (!(obj instanceof ListItem)) {
					stack.push(obj);
					return;
				}
				if (stack.empty()) {
					document.add((Element) obj);
					return;
				}
				Object list = stack.pop();
				if (!(list instanceof com.lowagie.text.List)) {
					stack.push(list);
					return;
				}
				ListItem item = (ListItem) obj;
				((com.lowagie.text.List) list).add(item);
				ArrayList cks = item.getChunks();
				if (!cks.isEmpty())
					item.getListSymbol()
							.setFont(((Chunk) cks.get(0)).getFont());
				stack.push(list);
				return;
			}
			if (tag.equals("div") || tag.equals("body")) {
				cprops.removeChain(tag);
				return;
			}
			if (tag.equals(HtmlTags.PRE)) {
				cprops.removeChain(tag);
				isPRE = false;
				return;
			}
			if (tag.equals("p")) {
				cprops.removeChain(tag);
				return;
			}
			if (tag.equals("h1") || tag.equals("h2") || tag.equals("h3")
					|| tag.equals("h4") || tag.equals("h5") || tag.equals("h6")) {
				cprops.removeChain(tag);
				return;
			}
			if (tag.equals("table")) {
				if (pendingTR)
					endElement("tr");
				cprops.removeChain("table");
				IncTable table = (IncTable) stack.pop();
				PdfPTable tb = table.buildTable();
				tb.setSplitRows(true);
				if (stack.empty())
					document.add(tb);
				else
					((TextElementArray) stack.peek()).add(tb);
				boolean state[] = (boolean[]) tableState.pop();
				pendingTR = state[0];
				pendingTD = state[1];
				skipText = false;
				return;
			}
			if (tag.equals("tr")) {
				if (pendingTD)
					endElement("td");
				pendingTR = false;
				cprops.removeChain("tr");
				ArrayList cells = new ArrayList();
				IncTable table = null;
				while (true) {
					Object obj = stack.pop();
					if (obj instanceof IncCell) {
						cells.add(((IncCell) obj).getCell());
					}
					if (obj instanceof IncTable) {
						table = (IncTable) obj;
						break;
					}
				}
				table.addCols(cells);
				table.endRow();
				stack.push(table);
				skipText = true;
				return;
			}
			if (tag.equals("td") || tag.equals("th")) {
				pendingTD = false;
				cprops.removeChain("td");
				skipText = true;
				return;
			}
		} catch (Exception e) {
			throw new ExceptionConverter(e);
		}
	}

	public void text(String str) {
		if (skipText)
			return;
		String content = str;
		if (isPRE) {
			if (currentParagraph == null) {
				currentParagraph = FactoryProperties.createParagraph(cprops);
			}
			Chunk chunk = factoryProperties.createChunk(content, cprops);
			currentParagraph.add(chunk);
			return;
		}
		if (content.trim().length() == 0 && content.indexOf(' ') < 0) {
			return;
		}

		StringBuffer buf = new StringBuffer();
		int len = content.length();
		char character;
		boolean newline = false;
		for (int i = 0; i < len; i++) {
			switch (character = content.charAt(i)) {
			case ' ':
				if (!newline) {
					buf.append(character);
				}
				break;
			case '\n':
				if (i > 0) {
					newline = true;
					buf.append(' ');
				}
				break;
			case '\r':
				break;
			case '\t':
				break;
			default:
				newline = false;
				buf.append(character);
			}
		}
		if (currentParagraph == null) {
			currentParagraph = FactoryProperties.createParagraph(cprops);
		}
		Chunk chunk = factoryProperties.createChunk(buf.toString(), cprops);
		currentParagraph.add(chunk);
	}

	public boolean add(Element element) throws DocumentException {
		objectList.add(element);
		return true;
	}

	public void clearTextWrap() throws DocumentException {
	}

	public void close() {
	}

	public boolean newPage() {
		return true;
	}

	public void open() {
	}

	public void resetFooter() {
	}

	public void resetHeader() {
	}

	public void resetPageCount() {
	}

	public void setFooter(HeaderFooter footer) {
	}

	public void setHeader(HeaderFooter header) {
	}

	public boolean setMarginMirroring(boolean marginMirroring) {
		return true;
	}

	public boolean setMargins(float marginLeft, float marginRight,
			float marginTop, float marginBottom) {
		return true;
	}

	public void setPageCount(int pageN) {
	}

	public boolean setPageSize(Rectangle pageSize) {
		return true;
	}

	public static final String tagsSupportedString = "ol ul li a pre font span br p div body table td th tr i b u sub sup em strong s strike"
			+ " h1 h2 h3 h4 h5 h6 img";

	public static final HashMap tagsSupported = new HashMap();

	static {
		StringTokenizer tok = new StringTokenizer(tagsSupportedString);
		while (tok.hasMoreTokens())
			tagsSupported.put(tok.nextToken(), null);
	}

	/**
	 * 
	 * This method is replace with Markup.lengthParse
	 * @deprecated
	 * @see com.lowagie.text.html.Markup#parseLength(String string)
	 * @param txt
	 * @param c
	 * @return float value of length
	 */
	private static float lengthParse(String txt, int c) {
		if (txt == null)
			return -1;
		if (txt.endsWith("%")) {
			float vf = Float.parseFloat(txt.substring(0, txt.length() - 1));
			return vf;
		}
		if (txt.endsWith("px")) {
			float vf = Float.parseFloat(txt.substring(0, txt.length() - 2));
			return vf;
		}
		int v = Integer.parseInt(txt);
		return (float) v / c * 100f;
	}
}