jdk8-mips64-public/langtools: src/share/classes/com/sun/tools/doclets/formats/html/markup/HtmlTree.java@959103a6100f (annotated)

src/share/classes/com/sun/tools/doclets/formats/html/markup/HtmlTree.java@959103a6100f (annotated)

src/share/classes/com/sun/tools/doclets/formats/html/markup/HtmlTree.java

Wed, 27 Apr 2016 01:34:52 +0800

author: aoqi
date: Wed, 27 Apr 2016 01:34:52 +0800
changeset 0: 959103a6100f
child 2525: 2eb010b6cb22
permissions: -rw-r--r--

Initial load
http://hg.openjdk.java.net/jdk8u/jdk8u/langtools/
changeset: 2573:53ca196be1ae
tag: jdk8u25-b17

 /*
  * 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("&lt;");  break;
                             case '>': sb.append("&gt;");  break;
                             case '&': sb.append("&amp;"); 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();
     }
 }

Mercurial > jdk8-mips64-public > langtools / annotate

src/share/classes/com/sun/tools/doclets/formats/html/markup/HtmlTree.java@959103a6100f (annotated)

src/share/classes/com/sun/tools/doclets/formats/html/markup/HtmlTree.java