📄 althtmlwriter.java
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} /** * Determines if the HTML.Tag associated with the * element is a block tag. * * @param attr an AttributeSet * @return true if tag is block tag, false otherwise. */ protected boolean isBlockTag(AttributeSet attr) { Object o = attr.getAttribute(StyleConstants.NameAttribute); if (o instanceof HTML.Tag) { HTML.Tag name = (HTML.Tag) o; return name.isBlock(); } return false; } /** * Writes out a start tag for the element. * Ignores all synthesized elements. * * @param elem an Element * @exception IOException on any I/O error */ protected void startTag(Element elem) throws IOException, BadLocationException { if (synthesizedElement(elem)) { return; } // Determine the name, as an HTML.Tag. AttributeSet attr = elem.getAttributes(); Object nameAttribute = attr.getAttribute(StyleConstants.NameAttribute); HTML.Tag name; if (nameAttribute instanceof HTML.Tag) { name = (HTML.Tag) nameAttribute; } else { name = null; } if (name == HTML.Tag.PRE) { inPre = true; preEndOffset = elem.getEndOffset(); } // write out end tags for item on stack closeOutUnwantedEmbeddedTags(attr); if (inContent) { writeLineSeparator(); inContent = false; newlineOutputed = false; } if (completeDoc && name == HTML.Tag.BODY && !wroteHead) { // If the head has not been output, output it and the styles. wroteHead = true; indent(); write("<head>"); writeLineSeparator(); incrIndent(); writeAdditionalComments(); writeLineSeparator(); if (encoding != null) { writeLineSeparator(); write("<meta http-equiv=\"Content-Type\" content=\"text/html; charset=" + encoding + "\">"); } writeStyles(((HTMLDocument) getDocument()).getStyleSheet()); writeLineSeparator(); //System.out.println(getDocument().getProperty(Document.TitleProperty)); write("<title>" + getDocument().getProperty(Document.TitleProperty) + "</title>"); decrIndent(); writeLineSeparator(); indent(); write("</head>"); writeLineSeparator(); } indent(); write('<'); write(elem.getName()); writeAttributes(attr); write('>'); if (name != HTML.Tag.PRE) { writeLineSeparator(); } if (name == HTML.Tag.TEXTAREA) { textAreaContent(elem.getAttributes()); } else if (name == HTML.Tag.SELECT) { selectContent(elem.getAttributes()); } // else if (completeDoc && name == HTML.Tag.BODY) { // Write out the maps, which is not stored as Elements in // the Document. //writeMaps(((HTMLDocument)getDocument()).getMaps()); // } else if (name == HTML.Tag.HEAD) { indent(); writeAdditionalComments(); if (encoding != null) { indent(); write("<meta http-equiv=\"Content-Type\" content=\"text/html; charset=" + encoding + "\">"); } writeLineSeparator(); wroteHead = true; } } /** * Writes out text that is contained in a TEXTAREA form * element. * * @param attr an AttributeSet * @exception IOException on any I/O error * @exception BadLocationException if pos represents an invalid * location within the document. */ protected void textAreaContent(AttributeSet attr) throws BadLocationException, IOException { Document doc = (Document) attr.getAttribute(StyleConstants.ModelAttribute); if (doc != null && doc.getLength() > 0) { if (segment == null) { segment = new Segment(); } doc.getText(0, doc.getLength(), segment); if (segment.count > 0) { inTextArea = true; incrIndent(); indent(); setCanWrapLines(true); replaceEntities = true; write(segment.array, segment.offset, segment.count); replaceEntities = false; setCanWrapLines(false); writeLineSeparator(); inTextArea = false; decrIndent(); } } } /** * Writes out text. If a range is specified when the constructor * is invoked, then only the appropriate range of text is written * out. * * @param elem an Element * @exception IOException on any I/O error * @exception BadLocationException if pos represents an invalid * location within the document. */ protected void text(Element elem) throws BadLocationException, IOException { int start = Math.max(getStartOffset(), elem.getStartOffset()); int end = Math.min(getEndOffset(), elem.getEndOffset()); if (start < end) { if (segment == null) { segment = new Segment(); } getDocument().getText(start, end - start, segment); newlineOutputed = false; if (segment.count > 0) { if (segment.array[segment.offset + segment.count - 1] == '\n') { newlineOutputed = true; } if (inPre && end == preEndOffset) { if (segment.count > 1) { segment.count--; } else { return; } } replaceEntities = true; setCanWrapLines(!inPre); write(segment.array, segment.offset, segment.count); setCanWrapLines(false); replaceEntities = false; } } } /** * Writes out the content of the SELECT form element. * * @param attr the AttributeSet associated with the form element * @exception IOException on any I/O error */ protected void selectContent(AttributeSet attr) throws IOException { Object model = attr.getAttribute(StyleConstants.ModelAttribute); incrIndent(); if (model instanceof OptionListModel) { OptionListModel listModel = (OptionListModel) model; int size = listModel.getSize(); for (int i = 0; i < size; i++) { Option option = (Option) listModel.getElementAt(i); writeOption(option); } } else if (model instanceof OptionComboBoxModel) { OptionComboBoxModel comboBoxModel = (OptionComboBoxModel) model; int size = comboBoxModel.getSize(); for (int i = 0; i < size; i++) { Option option = (Option) comboBoxModel.getElementAt(i); writeOption(option); } } decrIndent(); } /** * Writes out the content of the Option form element. * @param option an Option * @exception IOException on any I/O error * */ protected void writeOption(Option option) throws IOException { indent(); write('<'); write("option"); // PENDING: should this be changed to check for null first? Object value = option.getAttributes().getAttribute(HTML.Attribute.VALUE); if (value != null) { write(" value=" + value); } if (option.isSelected()) { write(" selected"); } write('>'); if (option.getLabel() != null) { write(option.getLabel()); } writeLineSeparator(); } /** * Writes out an end tag for the element. * * @param elem an Element * @exception IOException on any I/O error */ protected void endTag(Element elem) throws IOException { if (synthesizedElement(elem)) { return; } if (matchNameAttribute(elem.getAttributes(), HTML.Tag.PRE)) { inPre = false; } // write out end tags for item on stack closeOutUnwantedEmbeddedTags(elem.getAttributes()); if (inContent) { if (!newlineOutputed) { writeLineSeparator(); } newlineOutputed = false; inContent = false; } indent(); write('<'); write('/'); write(elem.getName()); write('>'); writeLineSeparator(); } /** * Writes out comments. * * @param elem an Element * @exception IOException on any I/O error * @exception BadLocationException if pos represents an invalid * location within the document. */ protected void comment(Element elem) throws BadLocationException, IOException { AttributeSet as = elem.getAttributes(); if (matchNameAttribute(as, HTML.Tag.COMMENT)) { Object comment = as.getAttribute(HTML.Attribute.COMMENT); if (comment instanceof String) { writeComment((String) comment); } else { writeComment(null); } } } /** * Writes out comment string. * * @param string the comment * @exception IOException on any I/O error * @exception BadLocationException if pos represents an invalid * location within the document. */ void writeComment(String string) throws IOException { write("<!--"); if (string != null) { write(string); } write("-->"); writeLineSeparator(); } /** * Writes out any additional comments (comments outside of the body) * stored under the property HTMLDocument.AdditionalComments. */ void writeAdditionalComments() throws IOException { Object comments = getDocument().getProperty(HTMLDocument.AdditionalComments); if (comments == null) return; if (comments instanceof Vector) { Vector v = (Vector) comments; for (int counter = 0, maxCounter = v.size(); counter < maxCounter; counter++) { writeComment(v.elementAt(counter).toString()); } } //[alex] I've add the following 'else' for single comments: else writeComment(comments.toString()); // end add } /** * Returns true if the element is a * synthesized element. Currently we are only testing * for the p-implied tag. */ protected boolean synthesizedElement(Element elem) { if (matchNameAttribute(elem.getAttributes(), HTML.Tag.IMPLIED)) { return true; } return false; } /** * Returns true if the StyleConstants.NameAttribute is * equal to the tag that is passed in as a parameter. */ protected boolean matchNameAttribute(AttributeSet attr, HTML.Tag tag) { Object o = attr.getAttribute(StyleConstants.NameAttribute); if (o instanceof HTML.Tag) { HTML.Tag name = (HTML.Tag) o; if (name == tag) { return true; } } return false; } /** * Searches for embedded tags in the AttributeSet * and writes them out. It also stores these tags in a vector * so that when appropriate the corresponding end tags can be * written out. * * @exception IOException on any I/O error */ protected void writeEmbeddedTags(AttributeSet attr) throws IOException { // translate css attributes to html attr = convertToHTML(attr, oConvAttr);⌨️ 快捷键说明
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