org.areasy.common.doclet.document.tags.TagA.java Source code

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Here is the source code for org.areasy.common.doclet.document.tags.TagA.java

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package org.areasy.common.doclet.document.tags;

/*
 * Copyright (c) 2007-2016 AREasy Runtime
 *
 * This library, AREasy Runtime and API for BMC Remedy AR System, is free software ("Licensed Software");
 * you can redistribute it and/or modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either version 2.1 of the License,
 * or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
 * including but not limited to, the implied warranty of MERCHANTABILITY, NONINFRINGEMENT,
 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
 */

import com.lowagie.text.Chunk;
import com.lowagie.text.Element;
import com.lowagie.text.Font;
import com.lowagie.text.Phrase;
import com.lowagie.text.pdf.PdfAction;
import com.lowagie.text.pdf.PdfName;
import com.lowagie.text.pdf.PdfString;
import org.areasy.common.logger.Logger;
import org.areasy.common.logger.LoggerFactory;
import org.areasy.common.doclet.DefaultConfiguration;
import org.areasy.common.doclet.document.Bookmarks;
import org.areasy.common.doclet.document.Destinations;
import org.areasy.common.doclet.document.State;
import org.areasy.common.doclet.document.elements.LinkPhrase;
import org.areasy.common.doclet.utilities.DocletUtility;
import org.areasy.common.doclet.utilities.PDFUtility;

import java.awt.*;
import java.io.File;
import java.io.FileNotFoundException;
import java.net.MalformedURLException;
import java.net.URL;

/**
 * Anchor tag
 *
 * @version $Id: TagA.java,v 1.2 2008/05/14 09:36:47 swd\stefan.damian Exp $
 */
public class TagA extends HtmlTag {
    /**
     * Logger reference
     */
    private static Logger log = LoggerFactory.getLog(TagA.class);

    /**
     * Create a link tag instance.
     *
     * @param parent The parent HTML tag.
     * @param type   The type of this tag.
     */
    public TagA(HtmlTag parent, int type) {
        super(parent, type);
        setLink(true);
    }

    /*
     * (non-Javadoc)
     *
     * @see org.areasy.common.doclet.document.tags.HTMLTag#openTagElements()
     */
    public Element[] openTagElements() {
        String addr = getAttribute("href");
        String name = getAttribute("name");

        if (addr != null && addr.equalsIgnoreCase("newpage")) {
            Chunk anchor = new Chunk("");
            anchor.setNewPage();

            return new Element[] { anchor };
        } else if (name != null && name.equalsIgnoreCase("bookmark")) {
            String label = getAttribute("label");

            String destinationName = null;
            if (HtmlParserWrapper.getRootBookmarkEntry() != null) {
                String target = getAttribute("target");
                destinationName = HtmlParserWrapper.getRootBookmarkEntry().addBookmarkEntry(target, label);
            } else {
                destinationName = Destinations.createAnchorDestination(State.getCurrentFile(), label);
                Bookmarks.addRootBookmark(label, destinationName);
            }

            Chunk anchor = PDFUtility.createAnchor(destinationName);

            return new Element[] { anchor };
        } else if (name != null && name.length() > 0) {
            String dest = Destinations.createAnchorDestination(State.getCurrentFile(), name);

            setLink(false);
            Phrase anchor = new Phrase(PDFUtility.createAnchor(dest, getFont()));

            return new Element[] { anchor };
        }

        return null;
    }

    /*
     * (non-Javadoc)
     *
     * @see org.areasy.common.doclet.document.tags.HTMLTag#toElement(java.lang.String)
     */
    public Element toElement(String text) {
        String addr = getAttribute("href");

        if (addr == null || !DefaultConfiguration.isLinksCreationActive())
            addr = "";
        if (!isPre())
            text = DocletUtility.stripLineFeeds(text);

        Element aChunk;
        if (addr.startsWith("locallink")) {
            boolean plainText = addr.startsWith("locallinkplain");
            String dest = addr.substring(addr.indexOf(':') + 1).trim();

            setCode(!plainText);

            return new LinkPhrase(dest, text, Math.max(9, (int) getFont().size()), plainText);
        } else if (addr.equalsIgnoreCase("newpage"))
            return super.toElement(text);
        else if (addr.startsWith("http://") || addr.startsWith("https://")) {
            try {
                URL url = new URL(addr);
                return new Chunk(text, getFont()).setAnchor(url);
            } catch (MalformedURLException e) {
                log.error("Malformed URL: " + addr);
            }
        } else {
            String fileName = addr.trim();
            String anchorName = "";

            int hashIndex = addr.indexOf('#');

            if (hashIndex >= 0) {
                fileName = addr.substring(0, hashIndex).trim();
                anchorName = addr.substring(hashIndex + 1).trim();
            }

            boolean isLocalAnchor = (fileName.length() == 0 && anchorName.length() > 0);
            File file = null;

            try {
                if (fileName.length() > 0)
                    file = new File(DocletUtility.getFilePath(fileName));
                else
                    file = State.getCurrentFile();
            } catch (FileNotFoundException e) {
                log.debug("Could not find linked file " + fileName);
            }

            if (isLocalAnchor || Destinations.isValidDestinationFile(file)) {
                String fullAnchor = Destinations.createAnchorDestination(file, anchorName);

                PdfAction action = new PdfAction("", "");
                action.remove(PdfName.F);
                action.put(PdfName.S, PdfName.GOTO);
                action.put(PdfName.D, new PdfString(fullAnchor));

                aChunk = new Phrase();

                Chunk chunk = createChunk(text);
                ((Phrase) aChunk).add(chunk.setAction(action));

                return aChunk;
            }
        }

        if (getAttribute("name") != null)
            setLink(false); // no underline for anchors

        Font font = getFont();
        font.setColor(0, 0, 0);

        aChunk = new Chunk(text, font);

        setLink(false);

        return aChunk;
    }

    protected Chunk createChunk(String text) {
        Chunk chunk = new Chunk(text);

        Font font = chunk.font();
        font.setStyle(Font.NORMAL);
        font.setColor(Color.blue);

        chunk.setFont(font);

        return chunk;
    }
}