src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/formats/html/markup/HtmlDocWriter.java
8187521: In some corner cases the javadoc tool can reuse id attribute
Reviewed-by: bpatel, ksrini
/*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
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* 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.
*
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package jdk.javadoc.internal.doclets.formats.html.markup;
import java.util.*;
import javax.lang.model.element.ModuleElement;
import javax.lang.model.element.PackageElement;
import javax.lang.model.element.TypeElement;
import jdk.javadoc.internal.doclets.formats.html.HtmlConfiguration;
import jdk.javadoc.internal.doclets.formats.html.SectionName;
import jdk.javadoc.internal.doclets.toolkit.BaseConfiguration;
import jdk.javadoc.internal.doclets.toolkit.Content;
import jdk.javadoc.internal.doclets.toolkit.Messages;
import jdk.javadoc.internal.doclets.toolkit.util.DocFile;
import jdk.javadoc.internal.doclets.toolkit.util.DocLink;
import jdk.javadoc.internal.doclets.toolkit.util.DocPath;
import jdk.javadoc.internal.doclets.toolkit.util.DocPaths;
/**
* Class for the Html Format Code Generation specific to JavaDoc.
* This Class contains methods related to the Html Code Generation which
* are used by the Sub-Classes in the package jdk.javadoc.internal.tool.standard.
*
* <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 Atul M Dambalkar
* @author Robert Field
*/
public abstract class HtmlDocWriter extends HtmlWriter {
public static final String CONTENT_TYPE = "text/html";
private final HtmlConfiguration configuration;
private final DocPath pathToRoot;
/**
* Constructor. Initializes the destination file name through the super
* class HtmlWriter.
*
* @param configuration the configuration for this doclet
* @param filename String file name.
*/
public HtmlDocWriter(HtmlConfiguration configuration, DocPath filename) {
super(configuration, filename);
this.configuration = configuration;
this.pathToRoot = filename.parent().invert();
Messages messages = configuration.getMessages();
messages.notice("doclet.Generating_0",
DocFile.createFileForOutput(configuration, filename).getPath());
}
/**
* Accessor for configuration.
* @return the configuration for this doclet
*/
public BaseConfiguration configuration() {
return configuration;
}
public Content getHyperLink(DocPath link, String label) {
return getHyperLink(link, new StringContent(label), false, "", "", "");
}
/**
* Get Html Hyper Link Content.
*
* @param where Position of the link in the file. Character '#' is not
* needed.
* @param label Tag for the link.
* @return a content tree for the hyper link
*/
public Content getHyperLink(String where,
Content label) {
return getHyperLink(getDocLink(where), label, "", "");
}
/**
* Get Html Hyper Link Content.
*
* @param sectionName The section name to which the link will be created.
* @param label Tag for the link.
* @return a content tree for the hyper link
*/
public Content getHyperLink(SectionName sectionName,
Content label) {
return getHyperLink(getDocLink(sectionName), label, "", "");
}
/**
* Get Html Hyper Link Content.
*
* @param sectionName The section name combined with where to which the link
* will be created.
* @param where The fragment combined with sectionName to which the link
* will be created.
* @param label Tag for the link.
* @return a content tree for the hyper link
*/
public Content getHyperLink(SectionName sectionName, String where,
Content label) {
return getHyperLink(getDocLink(sectionName, where), label, "", "");
}
/**
* Get the link.
*
* @param where Position of the link in the file.
* @return a DocLink object for the hyper link
*/
public DocLink getDocLink(String where) {
return DocLink.fragment(getName(where));
}
/**
* Get the link.
*
* @param sectionName The section name to which the link will be created.
* @return a DocLink object for the hyper link
*/
public DocLink getDocLink(SectionName sectionName) {
return DocLink.fragment(sectionName.getName());
}
/**
* Get the link.
*
* @param sectionName The section name combined with where to which the link
* will be created.
* @param where The fragment combined with sectionName to which the link
* will be created.
* @return a DocLink object for the hyper link
*/
public DocLink getDocLink(SectionName sectionName, String where) {
return DocLink.fragment(sectionName.getName() + getName(where));
}
/**
* Convert the name to a valid HTML name.
*
* @param name the name that needs to be converted to valid HTML name.
* @return a valid HTML name string.
*/
public String getName(String name) {
/* The HTML 4 spec at http://www.w3.org/TR/html4/types.html#h-6.2 mentions
* that the name/id should begin with a letter followed by other valid characters.
* The HTML 5 spec (draft) is more permissive on names/ids where the only restriction
* is that it should be at least one character long and should not contain spaces.
* The spec draft is @ http://www.w3.org/html/wg/drafts/html/master/dom.html#the-id-attribute.
*
* For HTML 4, we need to check for non-characters at the beginning of the name and
* substitute it accordingly, "_" and "$" can appear at the beginning of a member name.
* The method substitutes "$" with "Z:Z:D" and will prefix "_" with "Z:Z".
*/
if (configuration.isOutputHtml5()) {
return name.replaceAll(" +", "");
}
StringBuilder sb = new StringBuilder();
for (int i = 0; i < name.length(); i++) {
char ch = name.charAt(i);
switch (ch) {
case '(':
case ')':
case '<':
case '>':
case ',':
sb.append('-');
break;
case ' ':
case '[':
break;
case ']':
sb.append(":A");
break;
// Any appearance of $ needs to be substituted with ":D" and not with hyphen
// since a field name "P$$ and a method P(), both valid member names, can end
// up as "P--". A member name beginning with $ needs to be substituted with
// "Z:Z:D".
case '$':
if (i == 0)
sb.append("Z:Z");
sb.append(":D");
break;
// A member name beginning with _ needs to be prefixed with "Z:Z" since valid anchor
// names can only begin with a letter.
case '_':
if (i == 0)
sb.append("Z:Z");
sb.append(ch);
break;
default:
sb.append(ch);
}
}
return sb.toString();
}
/**
* Get Html hyperlink.
*
* @param link path of the file.
* @param label Tag for the link.
* @return a content tree for the hyper link
*/
public Content getHyperLink(DocPath link, Content label) {
return getHyperLink(link, label, "", "");
}
public Content getHyperLink(DocLink link, Content label) {
return getHyperLink(link, label, "", "");
}
public Content getHyperLink(DocPath link,
Content label, boolean strong,
String stylename, String title, String target) {
return getHyperLink(new DocLink(link), label, strong,
stylename, title, target);
}
public Content getHyperLink(DocLink link,
Content label, boolean strong,
String stylename, String title, String target) {
Content body = label;
if (strong) {
body = HtmlTree.SPAN(HtmlStyle.typeNameLink, body);
}
if (stylename != null && stylename.length() != 0) {
HtmlTree t = new HtmlTree(HtmlTag.FONT, body);
t.addAttr(HtmlAttr.CLASS, stylename);
body = t;
}
HtmlTree l = HtmlTree.A(link.toString(), body);
if (title != null && title.length() != 0) {
l.addAttr(HtmlAttr.TITLE, title);
}
if (target != null && target.length() != 0) {
l.addAttr(HtmlAttr.TARGET, target);
}
return l;
}
/**
* Get Html Hyper Link.
*
* @param link String name of the file.
* @param label Tag for the link.
* @param title String that describes the link's content for accessibility.
* @param target Target frame.
* @return a content tree for the hyper link.
*/
public Content getHyperLink(DocPath link, Content label, String title, String target) {
return getHyperLink(new DocLink(link), label, title, target);
}
public Content getHyperLink(DocLink link, Content label, String title, String target) {
HtmlTree anchor = HtmlTree.A(link.toString(), label);
if (title != null && title.length() != 0) {
anchor.addAttr(HtmlAttr.TITLE, title);
}
if (target != null && target.length() != 0) {
anchor.addAttr(HtmlAttr.TARGET, target);
}
return anchor;
}
public Content getModuleFramesHyperLink(ModuleElement mdle, Content label, String target) {
DocLink mdlLink = new DocLink(DocPaths.moduleFrame(mdle));
DocLink mtFrameLink = new DocLink(DocPaths.moduleTypeFrame(mdle));
DocLink cFrameLink = new DocLink(DocPaths.moduleSummary(mdle));
HtmlTree anchor = HtmlTree.A(mdlLink.toString(), label);
String onclickStr = "updateModuleFrame('" + mtFrameLink + "','" + cFrameLink + "');";
anchor.addAttr(HtmlAttr.TARGET, target);
anchor.addAttr(HtmlAttr.ONCLICK, onclickStr);
return anchor;
}
/**
* Get the enclosed name of the package
*
* @param te TypeElement
* @return the name
*/
public String getEnclosingPackageName(TypeElement te) {
PackageElement encl = configuration.utils.containingPackage(te);
return (encl.isUnnamed()) ? "" : (encl.getQualifiedName() + ".");
}
/**
* Returns a link to the stylesheet file.
*
* @param configuration the configuration for this doclet
* @return an HtmlTree for the lINK tag which provides the stylesheet location
*/
public HtmlTree getStyleSheetProperties(HtmlConfiguration configuration) {
String stylesheetfile = configuration.stylesheetfile;
DocPath stylesheet;
if (stylesheetfile.isEmpty()) {
stylesheet = DocPaths.STYLESHEET;
} else {
DocFile file = DocFile.createFileForInput(configuration, stylesheetfile);
stylesheet = DocPath.create(file.getName());
}
HtmlTree link = HtmlTree.LINK("stylesheet", "text/css",
pathToRoot.resolve(stylesheet).getPath(),
"Style");
return link;
}
protected Comment getGeneratedBy(boolean timestamp) {
String text = "Generated by javadoc"; // marker string, deliberately not localized
if (timestamp) {
Calendar calendar = new GregorianCalendar(TimeZone.getDefault());
Date today = calendar.getTime();
text += " ("+ configuration.getDocletSpecificBuildDate() + ") on " + today;
}
return new Comment(text);
}
}