| /* |
| * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package com.sun.tools.doclets.formats.html.markup; |
| |
| import java.io.IOException; |
| import java.io.Writer; |
| import java.util.*; |
| import java.nio.charset.*; |
| |
| import com.sun.tools.doclets.internal.toolkit.Content; |
| import com.sun.tools.doclets.internal.toolkit.util.*; |
| |
| /** |
| * Class for generating HTML tree for javadoc output. |
| * |
| * <p><b>This is NOT part of any supported API. |
| * If you write code that depends on this, you do so at your own risk. |
| * This code and its internal interfaces are subject to change or |
| * deletion without notice.</b> |
| * |
| * @author Bhavesh Patel |
| */ |
| public class HtmlTree extends Content { |
| |
| private HtmlTag htmlTag; |
| private Map<HtmlAttr,String> attrs = Collections.<HtmlAttr,String>emptyMap(); |
| private List<Content> content = Collections.<Content>emptyList(); |
| public static final Content EMPTY = new StringContent(""); |
| |
| /** |
| * Constructor to construct HtmlTree object. |
| * |
| * @param tag HTML tag for the HtmlTree object |
| */ |
| public HtmlTree(HtmlTag tag) { |
| htmlTag = nullCheck(tag); |
| } |
| |
| /** |
| * Constructor to construct HtmlTree object. |
| * |
| * @param tag HTML tag for the HtmlTree object |
| * @param contents contents to be added to the tree |
| */ |
| public HtmlTree(HtmlTag tag, Content... contents) { |
| this(tag); |
| for (Content content: contents) |
| addContent(content); |
| } |
| |
| /** |
| * Adds an attribute for the HTML tag. |
| * |
| * @param attrName name of the attribute |
| * @param attrValue value of the attribute |
| */ |
| public void addAttr(HtmlAttr attrName, String attrValue) { |
| if (attrs.isEmpty()) |
| attrs = new LinkedHashMap<HtmlAttr,String>(3); |
| attrs.put(nullCheck(attrName), escapeHtmlChars(attrValue)); |
| } |
| |
| public void setTitle(Content body) { |
| addAttr(HtmlAttr.TITLE, stripHtml(body)); |
| } |
| |
| /** |
| * Adds a style for the HTML tag. |
| * |
| * @param style style to be added |
| */ |
| public void addStyle(HtmlStyle style) { |
| addAttr(HtmlAttr.CLASS, style.toString()); |
| } |
| |
| /** |
| * Adds content for the HTML tag. |
| * |
| * @param tagContent tag content to be added |
| */ |
| public void addContent(Content tagContent) { |
| if (tagContent instanceof ContentBuilder) { |
| for (Content content: ((ContentBuilder)tagContent).contents) { |
| addContent(content); |
| } |
| } |
| else if (tagContent == HtmlTree.EMPTY || tagContent.isValid()) { |
| if (content.isEmpty()) |
| content = new ArrayList<Content>(); |
| content.add(tagContent); |
| } |
| } |
| |
| /** |
| * This method adds a string content to the htmltree. If the last content member |
| * added is a StringContent, append the string to that StringContent or else |
| * create a new StringContent and add it to the html tree. |
| * |
| * @param stringContent string content that needs to be added |
| */ |
| public void addContent(String stringContent) { |
| if (!content.isEmpty()) { |
| Content lastContent = content.get(content.size() - 1); |
| if (lastContent instanceof StringContent) |
| lastContent.addContent(stringContent); |
| else |
| addContent(new StringContent(stringContent)); |
| } |
| else |
| addContent(new StringContent(stringContent)); |
| } |
| |
| public int charCount() { |
| int n = 0; |
| for (Content c : content) |
| n += c.charCount(); |
| return n; |
| } |
| |
| /** |
| * Given a string, escape all special html characters and |
| * return the result. |
| * |
| * @param s The string to check. |
| * @return the original string with all of the HTML characters escaped. |
| */ |
| private static String escapeHtmlChars(String s) { |
| for (int i = 0; i < s.length(); i++) { |
| char ch = s.charAt(i); |
| switch (ch) { |
| // only start building a new string if we need to |
| case '<': case '>': case '&': |
| StringBuilder sb = new StringBuilder(s.substring(0, i)); |
| for ( ; i < s.length(); i++) { |
| ch = s.charAt(i); |
| switch (ch) { |
| case '<': sb.append("<"); break; |
| case '>': sb.append(">"); break; |
| case '&': sb.append("&"); break; |
| default: sb.append(ch); break; |
| } |
| } |
| return sb.toString(); |
| } |
| } |
| return s; |
| } |
| |
| /** |
| * A set of ASCII URI characters to be left unencoded. |
| */ |
| public static final BitSet NONENCODING_CHARS = new BitSet(256); |
| |
| static { |
| // alphabetic characters |
| for (int i = 'a'; i <= 'z'; i++) { |
| NONENCODING_CHARS.set(i); |
| } |
| for (int i = 'A'; i <= 'Z'; i++) { |
| NONENCODING_CHARS.set(i); |
| } |
| // numeric characters |
| for (int i = '0'; i <= '9'; i++) { |
| NONENCODING_CHARS.set(i); |
| } |
| // Reserved characters as per RFC 3986. These are set of delimiting characters. |
| String noEnc = ":/?#[]@!$&'()*+,;="; |
| // Unreserved characters as per RFC 3986 which should not be percent encoded. |
| noEnc += "-._~"; |
| for (int i = 0; i < noEnc.length(); i++) { |
| NONENCODING_CHARS.set(noEnc.charAt(i)); |
| } |
| } |
| |
| private static String encodeURL(String url) { |
| byte[] urlBytes = url.getBytes(Charset.forName("UTF-8")); |
| StringBuilder sb = new StringBuilder(); |
| for (int i = 0; i < urlBytes.length; i++) { |
| int c = urlBytes[i]; |
| if (NONENCODING_CHARS.get(c & 0xFF)) { |
| sb.append((char) c); |
| } else { |
| sb.append(String.format("%%%02X", c & 0xFF)); |
| } |
| } |
| return sb.toString(); |
| } |
| |
| /** |
| * Generates an HTML anchor tag. |
| * |
| * @param ref reference url for the anchor tag |
| * @param body content for the anchor tag |
| * @return an HtmlTree object |
| */ |
| public static HtmlTree A(String ref, Content body) { |
| HtmlTree htmltree = new HtmlTree(HtmlTag.A, nullCheck(body)); |
| htmltree.addAttr(HtmlAttr.HREF, encodeURL(ref)); |
| return htmltree; |
| } |
| |
| /** |
| * Generates an HTML anchor tag with name attribute and content. |
| * |
| * @param name name for the anchor tag |
| * @param body content for the anchor tag |
| * @return an HtmlTree object |
| */ |
| public static HtmlTree A_NAME(String name, Content body) { |
| HtmlTree htmltree = HtmlTree.A_NAME(name); |
| htmltree.addContent(nullCheck(body)); |
| return htmltree; |
| } |
| |
| /** |
| * Generates an HTML anchor tag with name attribute. |
| * |
| * @param name name for the anchor tag |
| * @return an HtmlTree object |
| */ |
| public static HtmlTree A_NAME(String name) { |
| HtmlTree htmltree = new HtmlTree(HtmlTag.A); |
| htmltree.addAttr(HtmlAttr.NAME, nullCheck(name)); |
| return htmltree; |
| } |
| |
| /** |
| * Generates a CAPTION tag with some content. |
| * |
| * @param body content for the tag |
| * @return an HtmlTree object for the CAPTION tag |
| */ |
| public static HtmlTree CAPTION(Content body) { |
| HtmlTree htmltree = new HtmlTree(HtmlTag.CAPTION, nullCheck(body)); |
| return htmltree; |
| } |
| |
| /** |
| * Generates a CODE tag with some content. |
| * |
| * @param body content for the tag |
| * @return an HtmlTree object for the CODE tag |
| */ |
| public static HtmlTree CODE(Content body) { |
| HtmlTree htmltree = new HtmlTree(HtmlTag.CODE, nullCheck(body)); |
| return htmltree; |
| } |
| |
| /** |
| * Generates a DD tag with some content. |
| * |
| * @param body content for the tag |
| * @return an HtmlTree object for the DD tag |
| */ |
| public static HtmlTree DD(Content body) { |
| HtmlTree htmltree = new HtmlTree(HtmlTag.DD, nullCheck(body)); |
| return htmltree; |
| } |
| |
| /** |
| * Generates a DL tag with some content. |
| * |
| * @param body content for the tag |
| * @return an HtmlTree object for the DL tag |
| */ |
| public static HtmlTree DL(Content body) { |
| HtmlTree htmltree = new HtmlTree(HtmlTag.DL, nullCheck(body)); |
| return htmltree; |
| } |
| |
| /** |
| * Generates a DIV tag with the style class attributes. It also encloses |
| * a content. |
| * |
| * @param styleClass stylesheet class for the tag |
| * @param body content for the tag |
| * @return an HtmlTree object for the DIV tag |
| */ |
| public static HtmlTree DIV(HtmlStyle styleClass, Content body) { |
| HtmlTree htmltree = new HtmlTree(HtmlTag.DIV, nullCheck(body)); |
| if (styleClass != null) |
| htmltree.addStyle(styleClass); |
| return htmltree; |
| } |
| |
| /** |
| * Generates a DIV tag with some content. |
| * |
| * @param body content for the tag |
| * @return an HtmlTree object for the DIV tag |
| */ |
| public static HtmlTree DIV(Content body) { |
| return DIV(null, body); |
| } |
| |
| /** |
| * Generates a DT tag with some content. |
| * |
| * @param body content for the tag |
| * @return an HtmlTree object for the DT tag |
| */ |
| public static HtmlTree DT(Content body) { |
| HtmlTree htmltree = new HtmlTree(HtmlTag.DT, nullCheck(body)); |
| return htmltree; |
| } |
| |
| /** |
| * Generates a FRAME tag. |
| * |
| * @param src the url of the document to be shown in the frame |
| * @param name specifies the name of the frame |
| * @param title the title for the frame |
| * @param scrolling specifies whether to display scrollbars in the frame |
| * @return an HtmlTree object for the FRAME tag |
| */ |
| public static HtmlTree FRAME(String src, String name, String title, String scrolling) { |
| HtmlTree htmltree = new HtmlTree(HtmlTag.FRAME); |
| htmltree.addAttr(HtmlAttr.SRC, nullCheck(src)); |
| htmltree.addAttr(HtmlAttr.NAME, nullCheck(name)); |
| htmltree.addAttr(HtmlAttr.TITLE, nullCheck(title)); |
| if (scrolling != null) |
| htmltree.addAttr(HtmlAttr.SCROLLING, scrolling); |
| return htmltree; |
| } |
| |
| /** |
| * Generates a Frame tag. |
| * |
| * @param src the url of the document to be shown in the frame |
| * @param name specifies the name of the frame |
| * @param title the title for the frame |
| * @return an HtmlTree object for the SPAN tag |
| */ |
| public static HtmlTree FRAME(String src, String name, String title) { |
| return FRAME(src, name, title, null); |
| } |
| |
| /** |
| * Generates a FRAMESET tag. |
| * |
| * @param cols the size of columns in the frameset |
| * @param rows the size of rows in the frameset |
| * @param title the title for the frameset |
| * @param onload the script to run when the document loads |
| * @return an HtmlTree object for the FRAMESET tag |
| */ |
| public static HtmlTree FRAMESET(String cols, String rows, String title, String onload) { |
| HtmlTree htmltree = new HtmlTree(HtmlTag.FRAMESET); |
| if (cols != null) |
| htmltree.addAttr(HtmlAttr.COLS, cols); |
| if (rows != null) |
| htmltree.addAttr(HtmlAttr.ROWS, rows); |
| htmltree.addAttr(HtmlAttr.TITLE, nullCheck(title)); |
| htmltree.addAttr(HtmlAttr.ONLOAD, nullCheck(onload)); |
| return htmltree; |
| } |
| |
| /** |
| * Generates a heading tag (h1 to h6) with the title and style class attributes. It also encloses |
| * a content. |
| * |
| * @param headingTag the heading tag to be generated |
| * @param printTitle true if title for the tag needs to be printed else false |
| * @param styleClass stylesheet class for the tag |
| * @param body content for the tag |
| * @return an HtmlTree object for the tag |
| */ |
| public static HtmlTree HEADING(HtmlTag headingTag, boolean printTitle, |
| HtmlStyle styleClass, Content body) { |
| HtmlTree htmltree = new HtmlTree(headingTag, nullCheck(body)); |
| if (printTitle) |
| htmltree.setTitle(body); |
| if (styleClass != null) |
| htmltree.addStyle(styleClass); |
| return htmltree; |
| } |
| |
| /** |
| * Generates a heading tag (h1 to h6) with style class attribute. It also encloses |
| * a content. |
| * |
| * @param headingTag the heading tag to be generated |
| * @param styleClass stylesheet class for the tag |
| * @param body content for the tag |
| * @return an HtmlTree object for the tag |
| */ |
| public static HtmlTree HEADING(HtmlTag headingTag, HtmlStyle styleClass, Content body) { |
| return HEADING(headingTag, false, styleClass, body); |
| } |
| |
| /** |
| * Generates a heading tag (h1 to h6) with the title attribute. It also encloses |
| * a content. |
| * |
| * @param headingTag the heading tag to be generated |
| * @param printTitle true if the title for the tag needs to be printed else false |
| * @param body content for the tag |
| * @return an HtmlTree object for the tag |
| */ |
| public static HtmlTree HEADING(HtmlTag headingTag, boolean printTitle, Content body) { |
| return HEADING(headingTag, printTitle, null, body); |
| } |
| |
| /** |
| * Generates a heading tag (h1 to h6) with some content. |
| * |
| * @param headingTag the heading tag to be generated |
| * @param body content for the tag |
| * @return an HtmlTree object for the tag |
| */ |
| public static HtmlTree HEADING(HtmlTag headingTag, Content body) { |
| return HEADING(headingTag, false, null, body); |
| } |
| |
| /** |
| * Generates an HTML tag with lang attribute. It also adds head and body |
| * content to the HTML tree. |
| * |
| * @param lang language for the HTML document |
| * @param head head for the HTML tag |
| * @param body body for the HTML tag |
| * @return an HtmlTree object for the HTML tag |
| */ |
| public static HtmlTree HTML(String lang, Content head, Content body) { |
| HtmlTree htmltree = new HtmlTree(HtmlTag.HTML, nullCheck(head), nullCheck(body)); |
| htmltree.addAttr(HtmlAttr.LANG, nullCheck(lang)); |
| return htmltree; |
| } |
| |
| /** |
| * Generates a LI tag with some content. |
| * |
| * @param body content for the tag |
| * @return an HtmlTree object for the LI tag |
| */ |
| public static HtmlTree LI(Content body) { |
| return LI(null, body); |
| } |
| |
| /** |
| * Generates a LI tag with some content. |
| * |
| * @param styleClass style for the tag |
| * @param body content for the tag |
| * @return an HtmlTree object for the LI tag |
| */ |
| public static HtmlTree LI(HtmlStyle styleClass, Content body) { |
| HtmlTree htmltree = new HtmlTree(HtmlTag.LI, nullCheck(body)); |
| if (styleClass != null) |
| htmltree.addStyle(styleClass); |
| return htmltree; |
| } |
| |
| /** |
| * Generates a LINK tag with the rel, type, href and title attributes. |
| * |
| * @param rel relevance of the link |
| * @param type type of link |
| * @param href the path for the link |
| * @param title title for the link |
| * @return an HtmlTree object for the LINK tag |
| */ |
| public static HtmlTree LINK(String rel, String type, String href, String title) { |
| HtmlTree htmltree = new HtmlTree(HtmlTag.LINK); |
| htmltree.addAttr(HtmlAttr.REL, nullCheck(rel)); |
| htmltree.addAttr(HtmlAttr.TYPE, nullCheck(type)); |
| htmltree.addAttr(HtmlAttr.HREF, nullCheck(href)); |
| htmltree.addAttr(HtmlAttr.TITLE, nullCheck(title)); |
| return htmltree; |
| } |
| |
| /** |
| * Generates a META tag with the http-equiv, content and charset attributes. |
| * |
| * @param httpEquiv http equiv attribute for the META tag |
| * @param content type of content |
| * @param charSet character set used |
| * @return an HtmlTree object for the META tag |
| */ |
| public static HtmlTree META(String httpEquiv, String content, String charSet) { |
| HtmlTree htmltree = new HtmlTree(HtmlTag.META); |
| String contentCharset = content + "; charset=" + charSet; |
| htmltree.addAttr(HtmlAttr.HTTP_EQUIV, nullCheck(httpEquiv)); |
| htmltree.addAttr(HtmlAttr.CONTENT, contentCharset); |
| return htmltree; |
| } |
| |
| /** |
| * Generates a META tag with the name and content attributes. |
| * |
| * @param name name attribute |
| * @param content type of content |
| * @return an HtmlTree object for the META tag |
| */ |
| public static HtmlTree META(String name, String content) { |
| HtmlTree htmltree = new HtmlTree(HtmlTag.META); |
| htmltree.addAttr(HtmlAttr.NAME, nullCheck(name)); |
| htmltree.addAttr(HtmlAttr.CONTENT, nullCheck(content)); |
| return htmltree; |
| } |
| |
| /** |
| * Generates a NOSCRIPT tag with some content. |
| * |
| * @param body content of the noscript tag |
| * @return an HtmlTree object for the NOSCRIPT tag |
| */ |
| public static HtmlTree NOSCRIPT(Content body) { |
| HtmlTree htmltree = new HtmlTree(HtmlTag.NOSCRIPT, nullCheck(body)); |
| return htmltree; |
| } |
| |
| /** |
| * Generates a P tag with some content. |
| * |
| * @param body content of the Paragraph tag |
| * @return an HtmlTree object for the P tag |
| */ |
| public static HtmlTree P(Content body) { |
| return P(null, body); |
| } |
| |
| /** |
| * Generates a P tag with some content. |
| * |
| * @param styleClass style of the Paragraph tag |
| * @param body content of the Paragraph tag |
| * @return an HtmlTree object for the P tag |
| */ |
| public static HtmlTree P(HtmlStyle styleClass, Content body) { |
| HtmlTree htmltree = new HtmlTree(HtmlTag.P, nullCheck(body)); |
| if (styleClass != null) |
| htmltree.addStyle(styleClass); |
| return htmltree; |
| } |
| |
| /** |
| * Generates a SCRIPT tag with the type and src attributes. |
| * |
| * @param type type of link |
| * @param src the path for the script |
| * @return an HtmlTree object for the SCRIPT tag |
| */ |
| public static HtmlTree SCRIPT(String type, String src) { |
| HtmlTree htmltree = new HtmlTree(HtmlTag.SCRIPT); |
| htmltree.addAttr(HtmlAttr.TYPE, nullCheck(type)); |
| htmltree.addAttr(HtmlAttr.SRC, nullCheck(src)); |
| return htmltree; |
| } |
| |
| /** |
| * Generates a SMALL tag with some content. |
| * |
| * @param body content for the tag |
| * @return an HtmlTree object for the SMALL tag |
| */ |
| public static HtmlTree SMALL(Content body) { |
| HtmlTree htmltree = new HtmlTree(HtmlTag.SMALL, nullCheck(body)); |
| return htmltree; |
| } |
| |
| /** |
| * Generates a SPAN tag with some content. |
| * |
| * @param body content for the tag |
| * @return an HtmlTree object for the SPAN tag |
| */ |
| public static HtmlTree SPAN(Content body) { |
| return SPAN(null, body); |
| } |
| |
| /** |
| * Generates a SPAN tag with style class attribute and some content. |
| * |
| * @param styleClass style class for the tag |
| * @param body content for the tag |
| * @return an HtmlTree object for the SPAN tag |
| */ |
| public static HtmlTree SPAN(HtmlStyle styleClass, Content body) { |
| HtmlTree htmltree = new HtmlTree(HtmlTag.SPAN, nullCheck(body)); |
| if (styleClass != null) |
| htmltree.addStyle(styleClass); |
| return htmltree; |
| } |
| |
| /** |
| * Generates a SPAN tag with id and style class attributes. It also encloses |
| * a content. |
| * |
| * @param id the id for the tag |
| * @param styleClass stylesheet class for the tag |
| * @param body content for the tag |
| * @return an HtmlTree object for the SPAN tag |
| */ |
| public static HtmlTree SPAN(String id, HtmlStyle styleClass, Content body) { |
| HtmlTree htmltree = new HtmlTree(HtmlTag.SPAN, nullCheck(body)); |
| htmltree.addAttr(HtmlAttr.ID, nullCheck(id)); |
| if (styleClass != null) |
| htmltree.addStyle(styleClass); |
| return htmltree; |
| } |
| |
| /** |
| * Generates a Table tag with style class, border, cell padding, |
| * cellspacing and summary attributes and some content. |
| * |
| * @param styleClass style of the table |
| * @param border border for the table |
| * @param cellPadding cell padding for the table |
| * @param cellSpacing cell spacing for the table |
| * @param summary summary for the table |
| * @param body content for the table |
| * @return an HtmlTree object for the TABLE tag |
| */ |
| public static HtmlTree TABLE(HtmlStyle styleClass, int border, int cellPadding, |
| int cellSpacing, String summary, Content body) { |
| HtmlTree htmltree = new HtmlTree(HtmlTag.TABLE, nullCheck(body)); |
| if (styleClass != null) |
| htmltree.addStyle(styleClass); |
| htmltree.addAttr(HtmlAttr.BORDER, Integer.toString(border)); |
| htmltree.addAttr(HtmlAttr.CELLPADDING, Integer.toString(cellPadding)); |
| htmltree.addAttr(HtmlAttr.CELLSPACING, Integer.toString(cellSpacing)); |
| htmltree.addAttr(HtmlAttr.SUMMARY, nullCheck(summary)); |
| return htmltree; |
| } |
| |
| /** |
| * Generates a TD tag with style class attribute and some content. |
| * |
| * @param styleClass style for the tag |
| * @param body content for the tag |
| * @return an HtmlTree object for the TD tag |
| */ |
| public static HtmlTree TD(HtmlStyle styleClass, Content body) { |
| HtmlTree htmltree = new HtmlTree(HtmlTag.TD, nullCheck(body)); |
| if (styleClass != null) |
| htmltree.addStyle(styleClass); |
| return htmltree; |
| } |
| |
| /** |
| * Generates a TD tag for an HTML table with some content. |
| * |
| * @param body content for the tag |
| * @return an HtmlTree object for the TD tag |
| */ |
| public static HtmlTree TD(Content body) { |
| return TD(null, body); |
| } |
| |
| /** |
| * Generates a TH tag with style class and scope attributes and some content. |
| * |
| * @param styleClass style for the tag |
| * @param scope scope of the tag |
| * @param body content for the tag |
| * @return an HtmlTree object for the TH tag |
| */ |
| public static HtmlTree TH(HtmlStyle styleClass, String scope, Content body) { |
| HtmlTree htmltree = new HtmlTree(HtmlTag.TH, nullCheck(body)); |
| if (styleClass != null) |
| htmltree.addStyle(styleClass); |
| htmltree.addAttr(HtmlAttr.SCOPE, nullCheck(scope)); |
| return htmltree; |
| } |
| |
| /** |
| * Generates a TH tag with scope attribute and some content. |
| * |
| * @param scope scope of the tag |
| * @param body content for the tag |
| * @return an HtmlTree object for the TH tag |
| */ |
| public static HtmlTree TH(String scope, Content body) { |
| return TH(null, scope, body); |
| } |
| |
| /** |
| * Generates a TITLE tag with some content. |
| * |
| * @param body content for the tag |
| * @return an HtmlTree object for the TITLE tag |
| */ |
| public static HtmlTree TITLE(Content body) { |
| HtmlTree htmltree = new HtmlTree(HtmlTag.TITLE, nullCheck(body)); |
| return htmltree; |
| } |
| |
| /** |
| * Generates a TR tag for an HTML table with some content. |
| * |
| * @param body content for the tag |
| * @return an HtmlTree object for the TR tag |
| */ |
| public static HtmlTree TR(Content body) { |
| HtmlTree htmltree = new HtmlTree(HtmlTag.TR, nullCheck(body)); |
| return htmltree; |
| } |
| |
| /** |
| * Generates a UL tag with the style class attribute and some content. |
| * |
| * @param styleClass style for the tag |
| * @param body content for the tag |
| * @return an HtmlTree object for the UL tag |
| */ |
| public static HtmlTree UL(HtmlStyle styleClass, Content body) { |
| HtmlTree htmltree = new HtmlTree(HtmlTag.UL, nullCheck(body)); |
| htmltree.addStyle(nullCheck(styleClass)); |
| return htmltree; |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public boolean isEmpty() { |
| return (!hasContent() && !hasAttrs()); |
| } |
| |
| /** |
| * Returns true if the HTML tree has content. |
| * |
| * @return true if the HTML tree has content else return false |
| */ |
| public boolean hasContent() { |
| return (!content.isEmpty()); |
| } |
| |
| /** |
| * Returns true if the HTML tree has attributes. |
| * |
| * @return true if the HTML tree has attributes else return false |
| */ |
| public boolean hasAttrs() { |
| return (!attrs.isEmpty()); |
| } |
| |
| /** |
| * Returns true if the HTML tree has a specific attribute. |
| * |
| * @param attrName name of the attribute to check within the HTML tree |
| * @return true if the HTML tree has the specified attribute else return false |
| */ |
| public boolean hasAttr(HtmlAttr attrName) { |
| return (attrs.containsKey(attrName)); |
| } |
| |
| /** |
| * Returns true if the HTML tree is valid. This check is more specific to |
| * standard doclet and not exactly similar to W3C specifications. But it |
| * ensures HTML validation. |
| * |
| * @return true if the HTML tree is valid |
| */ |
| public boolean isValid() { |
| switch (htmlTag) { |
| case A : |
| return (hasAttr(HtmlAttr.NAME) || (hasAttr(HtmlAttr.HREF) && hasContent())); |
| case BR : |
| return (!hasContent() && (!hasAttrs() || hasAttr(HtmlAttr.CLEAR))); |
| case FRAME : |
| return (hasAttr(HtmlAttr.SRC) && !hasContent()); |
| case HR : |
| return (!hasContent()); |
| case IMG : |
| return (hasAttr(HtmlAttr.SRC) && hasAttr(HtmlAttr.ALT) && !hasContent()); |
| case LINK : |
| return (hasAttr(HtmlAttr.HREF) && !hasContent()); |
| case META : |
| return (hasAttr(HtmlAttr.CONTENT) && !hasContent()); |
| case SCRIPT : |
| return ((hasAttr(HtmlAttr.TYPE) && hasAttr(HtmlAttr.SRC) && !hasContent()) || |
| (hasAttr(HtmlAttr.TYPE) && hasContent())); |
| default : |
| return hasContent(); |
| } |
| } |
| |
| /** |
| * Returns true if the element is an inline element. |
| * |
| * @return true if the HTML tag is an inline element |
| */ |
| public boolean isInline() { |
| return (htmlTag.blockType == HtmlTag.BlockType.INLINE); |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public boolean write(Writer out, boolean atNewline) throws IOException { |
| if (!isInline() && !atNewline) |
| out.write(DocletConstants.NL); |
| String tagString = htmlTag.toString(); |
| out.write("<"); |
| out.write(tagString); |
| Iterator<HtmlAttr> iterator = attrs.keySet().iterator(); |
| HtmlAttr key; |
| String value; |
| while (iterator.hasNext()) { |
| key = iterator.next(); |
| value = attrs.get(key); |
| out.write(" "); |
| out.write(key.toString()); |
| if (!value.isEmpty()) { |
| out.write("=\""); |
| out.write(value); |
| out.write("\""); |
| } |
| } |
| out.write(">"); |
| boolean nl = false; |
| for (Content c : content) |
| nl = c.write(out, nl); |
| if (htmlTag.endTagRequired()) { |
| out.write("</"); |
| out.write(tagString); |
| out.write(">"); |
| } |
| if (!isInline()) { |
| out.write(DocletConstants.NL); |
| return true; |
| } else { |
| return false; |
| } |
| } |
| |
| /** |
| * Given a Content node, strips all html characters and |
| * return the result. |
| * |
| * @param body The content node to check. |
| * @return the plain text from the content node |
| * |
| */ |
| private static String stripHtml(Content body) { |
| String rawString = body.toString(); |
| // remove HTML tags |
| rawString = rawString.replaceAll("\\<.*?>", " "); |
| // consolidate multiple spaces between a word to a single space |
| rawString = rawString.replaceAll("\\b\\s{2,}\\b", " "); |
| // remove extra whitespaces |
| return rawString.trim(); |
| } |
| } |
