make/jdk/src/classes/build/tools/taglet/Preview.java
author jlahoda
Wed, 02 Oct 2019 10:59:40 +0200
branchJDK-8226585-branch
changeset 58440 4c8a6d1d066c
parent 58342 ebb1ff3d6707
child 58441 82f43796b28c
permissions -rw-r--r--
Improving appearance of javadoc of the APIs associated with preview features.
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/*
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 * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.  Oracle designates this
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 * particular file as subject to the "Classpath" exception as provided
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 * by Oracle in the LICENSE file that accompanied this code.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 */
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package build.tools.taglet;
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import java.util.Arrays;
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import java.util.EnumSet;
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import java.util.List;
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import java.util.Set;
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import javax.lang.model.element.Element;
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import com.sun.source.doctree.DocTree;
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import com.sun.source.doctree.TextTree;
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import com.sun.source.doctree.UnknownInlineTagTree;
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import jdk.javadoc.doclet.Taglet;
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import static jdk.javadoc.doclet.Taglet.Location.*;
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/**
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 * An block tag to insert a standard warning about a preview API.
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 */
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public class Preview implements Taglet {
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    /** Returns the set of locations in which a taglet may be used. */
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    @Override
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    public Set<Location> getAllowedLocations() {
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        return EnumSet.of(MODULE, PACKAGE, TYPE, CONSTRUCTOR, METHOD, FIELD);
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    }
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    @Override
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    public boolean isInlineTag() {
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        return true;
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    }
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    @Override
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    public String getName() {
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        return "preview";
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    }
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    @Override
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    public String toString(List<? extends DocTree> tags, Element elem) {
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        UnknownInlineTagTree previewTag = (UnknownInlineTagTree) tags.get(0);
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        List<? extends DocTree> previewContent = previewTag.getContent();
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        String previewText = ((TextTree) previewContent.get(0)).getBody();
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        String[] summaryAndDetails = previewText.split("\n\r?\n\r?");
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        String summary = summaryAndDetails[0];
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        String details = summaryAndDetails.length > 1 ? summaryAndDetails[1] : summaryAndDetails[0];
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        if (Arrays.stream(new Exception().getStackTrace()).anyMatch(el -> el.getClassName().endsWith("HtmlDocletWriter") && el.getMethodName().equals("addSummaryComment"))) {
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            return "<div style=\"display:inline-block; font-weight:bold\">" + summary + "</div><br>";
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        }
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        return "<div style=\"border: 1px solid red; border-radius: 25px; padding: 5px; display:inline-block; font-size: larger\">" + details + "</div><br>";
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    }
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}
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