8253559: The INDEX page should link to Serialized Form and Constant Values pages

Reviewed-by: hannesw

Author: jonathan-gibbons

src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/formats/html/ConstantsSummaryWriterImpl.java

@@ -48,6 +48,7 @@
 import jdk.javadoc.internal.doclets.toolkit.util.DocFileIOException;
 import jdk.javadoc.internal.doclets.toolkit.util.DocLink;
 import jdk.javadoc.internal.doclets.toolkit.util.DocPaths;
+import jdk.javadoc.internal.doclets.toolkit.util.IndexItem;
 
 
 /**
@@ -60,11 +61,6 @@
  */
 public class ConstantsSummaryWriterImpl extends HtmlDocletWriter implements ConstantsSummaryWriter {
 
-    /**
-     * The configuration used in this run of the standard doclet.
-     */
-    HtmlConfiguration configuration;
-
     /**
      * The current class being documented.
      */
@@ -81,14 +77,15 @@ public class ConstantsSummaryWriterImpl extends HtmlDocletWriter implements Cons
 
     private final BodyContents bodyContents = new BodyContents();
 
+    private boolean hasConstants = false;
+
     /**
      * Construct a ConstantsSummaryWriter.
      * @param configuration the configuration used in this run
      *        of the standard doclet.
      */
     public ConstantsSummaryWriterImpl(HtmlConfiguration configuration) {
         super(configuration, DocPaths.CONSTANT_VALUES);
-        this.configuration = configuration;
         constantsTableHeader = new TableHeader(
                 contents.modifierAndTypeLabel, contents.constantFieldLabel, contents.valueLabel);
         this.navBar = new Navigation(null, configuration, PageMode.CONSTANT_VALUES, path);
@@ -184,6 +181,7 @@ public Content getClassConstantHeader() {
     @Override
     public void addClassConstant(Content summariesTree, Content classConstantTree) {
         summaryTree.add(classConstantTree);
+        hasConstants = true;
     }
 
     @Override
@@ -283,5 +281,10 @@ public void addFooter() {
     public void printDocument(Content contentTree) throws DocFileIOException {
         contentTree.add(bodyContents);
         printHtmlDocument(null, "summary of constants", contentTree);
+
+        if (hasConstants && configuration.mainIndex != null) {
+            configuration.mainIndex.add(IndexItem.of(IndexItem.Category.TAGS,
+                    resources.getText("doclet.Constants_Summary"), path));
+        }
     }
 }

src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/formats/html/Contents.java

@@ -25,6 +25,7 @@
 
 package jdk.javadoc.internal.doclets.formats.html;
 
+import java.util.Collection;
 import java.util.EnumMap;
 import java.util.Objects;
 import java.util.regex.Matcher;
@@ -103,7 +104,6 @@ public class Contents {
     public final Content fieldDetailsLabel;
     public final Content fieldSummaryLabel;
     public final Content fields;
-    public final Content framesLabel;
     public final Content fromLabel;
     public final Content functionalInterface;
     public final Content functionalInterfaceMessage;
@@ -141,7 +141,6 @@ public class Contents {
     public final Content navServices;
     public final Content nestedClassSummary;
     public final Content newPage;
-    public final Content noFramesLabel;
     public final Content noScriptMessage;
     public final Content openModuleLabel;
     public final Content openedTo;
@@ -189,10 +188,10 @@ public class Contents {
     Contents(HtmlConfiguration configuration) {
         this.resources = configuration.getDocResources();
 
-        allClassesLabel = getNonBreakContent("doclet.All_Classes");
+        allClassesLabel = getNonBreakResource("doclet.All_Classes");
         allImplementedInterfacesLabel = getContent("doclet.All_Implemented_Interfaces");
-        allModulesLabel = getNonBreakContent("doclet.All_Modules");
-        allPackagesLabel = getNonBreakContent("doclet.All_Packages");
+        allModulesLabel = getNonBreakResource("doclet.All_Modules");
+        allPackagesLabel = getNonBreakResource("doclet.All_Packages");
         allSuperinterfacesLabel = getContent("doclet.All_Superinterfaces");
         also = getContent("doclet.also");
         annotationTypeOptionalMemberLabel = getContent("doclet.Annotation_Type_Optional_Member");
@@ -239,7 +238,6 @@ public class Contents {
         fieldSummaryLabel = getContent("doclet.Field_Summary");
         fieldLabel = getContent("doclet.Field");
         fields = getContent("doclet.Fields");
-        framesLabel = getContent("doclet.Frames");
         fromLabel = getContent("doclet.From");
         functionalInterface = getContent("doclet.Functional_Interface");
         functionalInterfaceMessage = getContent("doclet.Functional_Interface_Message");
@@ -277,7 +275,6 @@ public class Contents {
         navServices = getContent("doclet.navServices");
         nestedClassSummary = getContent("doclet.Nested_Class_Summary");
         newPage = new Comment(resources.getText("doclet.New_Page"));
-        noFramesLabel = getNonBreakContent("doclet.No_Frames");
         noScriptMessage = getContent("doclet.No_Script_Message");
         openedTo = getContent("doclet.OpenedTo");
         openModuleLabel = getContent("doclet.Open_Module");
@@ -400,6 +397,27 @@ public Content getContent(String key, Object o0, Object o1, Object o2) {
         return c;
     }
 
+    /**
+     * Returns content composed of items joined together with the specified separator.
+     *
+     * @param separator the separator
+     * @param items     the items
+     * @return the content
+     */
+    public Content join(Content separator, Collection<Content> items) {
+        Content result = new ContentBuilder();
+        boolean first = true;
+        for (Content c : items) {
+            if (first) {
+                first = false;
+            } else {
+                result.add(separator);
+            }
+            result.add(c);
+        }
+        return result;
+    }
+
     /**
      * Gets a {@code Content} object, containing the string for
      * a given key in the doclet's resources, substituting
@@ -409,8 +427,19 @@ public Content getContent(String key, Object o0, Object o1, Object o2) {
      * @param key the key for the desired string
      * @return a content tree for the string
      */
-    private Content getNonBreakContent(String key) {
-        String text = resources.getText(key); // TODO: cache
+    private Content getNonBreakResource(String key) {
+        return getNonBreakString(resources.getText(key));
+    }
+
+    /**
+     * Gets a {@code Content} object for a string, substituting
+     * <code>&nbsp;</code> for any space characters found in
+     * the named resource string.
+     *
+     * @param text the string
+     * @return a content tree for the string
+     */
+    public Content getNonBreakString(String text) {
         Content c = new ContentBuilder();
         int start = 0;
         int p;

src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/formats/html/DeprecatedListWriter.java

@@ -49,6 +49,7 @@
 import jdk.javadoc.internal.doclets.toolkit.util.DocFileIOException;
 import jdk.javadoc.internal.doclets.toolkit.util.DocPath;
 import jdk.javadoc.internal.doclets.toolkit.util.DocPaths;
+import jdk.javadoc.internal.doclets.toolkit.util.IndexItem;
 
 /**
  * Generate File to list all the deprecated classes and class members with the
@@ -300,6 +301,11 @@ protected void generateDeprecatedListFile(DeprecatedAPIListBuilder deprapi)
         String description = "deprecated elements";
         body.add(bodyContents);
         printHtmlDocument(null, description, body);
+
+        if (!deprapi.isEmpty() && configuration.mainIndex != null) {
+            configuration.mainIndex.add(IndexItem.of(IndexItem.Category.TAGS,
+                    resources.getText("doclet.Deprecated_API"), path));
+        }
     }
 
     /**

src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/formats/html/HtmlDoclet.java

@@ -171,14 +171,14 @@ protected void generateOtherFiles(DocletEnvironment docEnv, ClassTree classtree)
         if (options.createIndex()) {
             SystemPropertiesWriter.generate(configuration);
             configuration.mainIndex.addElements();
-            IndexWriter.generate(configuration);
             IndexBuilder allClassesIndex = new IndexBuilder(configuration, nodeprecated, true);
             allClassesIndex.addElements();
             AllClassesIndexWriter.generate(configuration, allClassesIndex);
             if (!configuration.packages.isEmpty()) {
                 AllPackagesIndexWriter.generate(configuration);
             }
             configuration.mainIndex.createSearchIndexFiles();
+            IndexWriter.generate(configuration);
         }
 
         if (options.createOverview()) {

src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/formats/html/IndexWriter.java

@@ -28,6 +28,8 @@
 import java.util.List;
 import java.util.ListIterator;
 import java.util.SortedSet;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
 
 import javax.lang.model.element.Element;
 import javax.lang.model.element.ElementKind;
@@ -369,22 +371,14 @@ protected void addLinksForIndexes(List<Character> allFirstCharacters, Content co
         }
 
         contentTree.add(new HtmlTree(TagName.BR));
-
-        contentTree.add(links.createLink(pathToRoot.resolve(DocPaths.ALLCLASSES_INDEX),
-                contents.allClassesLabel));
-
-        if (!configuration.packages.isEmpty()) {
-            contentTree.add(getVerticalSeparator());
-            contentTree.add(links.createLink(pathToRoot.resolve(DocPaths.ALLPACKAGES_INDEX),
-                    contents.allPackagesLabel));
-        }
-
-        boolean anySystemProperties = !mainIndex.getItems(DocTree.Kind.SYSTEM_PROPERTY).isEmpty();
-        if (anySystemProperties) {
-            contentTree.add(getVerticalSeparator());
-            contentTree.add(links.createLink(pathToRoot.resolve(DocPaths.SYSTEM_PROPERTIES),
-                    contents.systemPropertiesLabel));
-        }
+        List<Content> pageLinks = Stream.of(IndexItem.Category.values())
+                .flatMap(c -> mainIndex.getItems(c).stream())
+                .filter(i -> !(i.isElementItem() || i.isTagItem()))
+                .sorted((i1,i2)-> utils.compareStrings(i1.getLabel(), i2.getLabel()))
+                .map(i -> links.createLink(pathToRoot.resolve(i.getUrl()),
+                        contents.getNonBreakString(i.getLabel())))
+                .collect(Collectors.toList());
+        contentTree.add(contents.join(getVerticalSeparator(), pageLinks));
     }
 
     /**

src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/formats/html/SerializedFormWriterImpl.java

@@ -40,6 +40,7 @@
 import jdk.javadoc.internal.doclets.toolkit.SerializedFormWriter;
 import jdk.javadoc.internal.doclets.toolkit.util.DocFileIOException;
 import jdk.javadoc.internal.doclets.toolkit.util.DocPaths;
+import jdk.javadoc.internal.doclets.toolkit.util.IndexItem;
 
 /**
  *  Generates the Serialized Form Information Page, <i>serialized-form.html</i>.
@@ -250,6 +251,11 @@ public void addFooter() {
     public void printDocument(Content serializedTree) throws DocFileIOException {
         serializedTree.add(bodyContents);
         printHtmlDocument(null, "serialized forms", serializedTree);
+
+        if (configuration.mainIndex != null) {
+            configuration.mainIndex.add(IndexItem.of(IndexItem.Category.TAGS,
+                    resources.getText("doclet.Serialized_Form"), path));
+        }
     }
 
     /**

src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/formats/html/SystemPropertiesWriter.java

@@ -126,6 +126,10 @@ protected void buildSystemPropertiesPage() throws DocFileIOException {
                 .addMainContent(mainContent)
                 .setFooter(footer));
         printHtmlDocument(null, "system properties", body);
+
+        if (configuration.mainIndex != null) {
+            configuration.mainIndex.add(IndexItem.of(IndexItem.Category.TAGS, title, path));
+        }
     }
 
     /**

src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/formats/html/resources/standard.properties

@@ -112,8 +112,6 @@ doclet.Functional_Interface_Message=\
     This is a functional interface and can therefore be used as the assignment target for a lambda \
     expression or method reference.
 doclet.also=also
-doclet.Frames=Frames
-doclet.No_Frames=No Frames
 doclet.Package_Hierarchies=Package Hierarchies:
 doclet.Hierarchy_For_Package=Hierarchy For Package {0}
 doclet.Hierarchy_For_All_Packages=Hierarchy For All Packages

src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/toolkit/util/DeprecatedAPIListBuilder.java

@@ -49,6 +49,7 @@ public class DeprecatedAPIListBuilder {
     private final Map<DeprElementKind, SortedSet<Element>> deprecatedMap;
     private final BaseConfiguration configuration;
     private final Utils utils;
+
     public enum DeprElementKind {
         REMOVAL,
         MODULE,
@@ -65,6 +66,7 @@ public enum DeprElementKind {
         ENUM_CONSTANT,
         ANNOTATION_TYPE_MEMBER // no ElementKind mapping
     };
+
     /**
      * Constructor.
      *
@@ -81,6 +83,10 @@ public DeprecatedAPIListBuilder(BaseConfiguration configuration) {
         buildDeprecatedAPIInfo();
     }
 
+    public boolean isEmpty() {
+        return deprecatedMap.values().stream().allMatch(Collection::isEmpty);
+    }
+
     /**
      * Build the sorted list of all the deprecated APIs in this run.
      * Build separate lists for deprecated modules, packages, classes, constructors,

src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/toolkit/util/IndexBuilder.java

@@ -163,9 +163,13 @@ public void addElements()  {
     public void add(IndexItem item) {
         Objects.requireNonNull(item);
 
-        itemsByFirstChar.computeIfAbsent(keyCharacter(item.getLabel()),
+        if (item.isElementItem() || item.isTagItem()) {
+            // don't put summary-page items in the A-Z index:
+            // they are listed separately, at the top of the index page
+            itemsByFirstChar.computeIfAbsent(keyCharacter(item.getLabel()),
                     c -> new TreeSet<>(mainComparator))
-                .add(item);
+                    .add(item);
+        }
 
         itemsByCategory.computeIfAbsent(item.getCategory(),
                     c -> new TreeSet<>(mainComparator))
@@ -210,7 +214,7 @@ public SortedSet<IndexItem> getItems(IndexItem.Category cat) {
     public SortedSet<IndexItem> getItems(DocTree.Kind kind) {
         Objects.requireNonNull(kind);
         return itemsByCategory.getOrDefault(IndexItem.Category.TAGS, Collections.emptySortedSet()).stream()
-                .filter(i -> i.getDocTree().getKind() == kind)
+                .filter(i -> i.isKind(kind))
                 .collect(Collectors.toCollection(() -> new TreeSet<>(mainComparator)));
     }