/* This file is part of the KDE project
 * Copyright (C) 2007-2008 Fredy Yanardi <fyanardi@gmail.com>
 * Copyright (C) 2011 Boudewijn Rempt <boud@valdyas.org>
 * Copyright (C) 2012 Inge Wallin <inge@lysator.liu.se>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 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; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public License
 * along with this library; see the file COPYING.LIB.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */

#include "KoAnnotation.h"

#include <KoShapeSavingContext.h>
#include <KoXmlWriter.h>
#include <KoXmlReader.h>
#include <KoTextInlineRdf.h>
#include <KoTextRangeManager.h>
#include <KoXmlNS.h>
#include <KoShape.h>

#include <QTextDocument>
#include <QTextBlock>
#include <QTextCursor>
#include "TextDebug.h"

// Include Q_UNSUSED classes, for building on Windows
#include <KoShapeLoadingContext.h>

class Q_DECL_HIDDEN KoAnnotation::Private
{
public:
    Private(const QTextDocument *doc):
        document(doc),
        posInDocument(0) { }
    const QTextDocument *document;
    int posInDocument;

    // Name of this annotation. It is used to tie together the annotation and annotation-end tags
    QString name;

    KoShape *shape;
};

KoAnnotation::KoAnnotation(const QTextCursor &cursor)
    : KoTextRange(cursor),
      d(new Private(cursor.block().document()))
{
}

KoAnnotation::~KoAnnotation()
{
    delete d;
}


void KoAnnotation::setName(const QString &name)
{
    d->name = name;
}

QString KoAnnotation::name() const
{
    return d->name;
}

void KoAnnotation::setAnnotationShape(KoShape *shape)
{
    d->shape = shape;
}

KoShape *KoAnnotation::annotationShape() const
{
    return d->shape;
}

bool KoAnnotation::loadOdf(const KoXmlElement &element, KoShapeLoadingContext &context)
{
    Q_UNUSED(context);

    if (element.localName() != "annotation") {
        return false;
    }

    //debugText << "****** Start Load odf ******";
    QString annotationName = element.attribute("name");

    if (manager()) {
        // For cut and paste, make sure that the name is unique.
        d->name = createUniqueAnnotationName(manager()->annotationManager(), annotationName, false);

        // When loading an annotation we must assume that it is for a point rather than
        // a range. If we encounter an <annotation-end> tag later, we will change that.
        setPositionOnlyMode(true);

        // Add inline Rdf to the annotation.
        if (element.hasAttributeNS(KoXmlNS::xhtml, "property") || element.hasAttribute("id")) {
            KoTextInlineRdf* inlineRdf = new KoTextInlineRdf(const_cast<QTextDocument*>(d->document), this);
            if (inlineRdf->loadOdf(element)) {
                setInlineRdf(inlineRdf);
            }
            else {
                delete inlineRdf;
                inlineRdf = 0;
            }
        }
        //debugText << "****** End Load ******";

        return true;
    }

    return false;
}

void KoAnnotation::saveOdf(KoShapeSavingContext &context, int position, TagType tagType) const
{
    KoXmlWriter *writer = &context.xmlWriter();

    if (!hasRange()) {

        if (tagType == StartTag) {
            writer->startElement("office:annotation", false);
            writer->addAttribute("text:name", d->name.toUtf8());
            if (inlineRdf()) {
                inlineRdf()->saveOdf(context, writer);
            }

            d->shape->saveOdf(context);

            writer->endElement(); //office:annotation
        }

    } else if ((tagType == StartTag) && (position == rangeStart())) {
        writer->startElement("office:annotation", false);
        writer->addAttribute("text:name", d->name.toUtf8());
        if (inlineRdf()) {
            inlineRdf()->saveOdf(context, writer);
        }

        d->shape->saveOdf(context);

        writer->endElement(); //office:annotation
    } else if ((tagType == EndTag) && (position == rangeEnd())) {
        writer->startElement("office:annotation-end", false);
        writer->addAttribute("text:name", d->name.toUtf8());
        writer->endElement();
    }
        // else nothing

}

QString KoAnnotation::createUniqueAnnotationName(const KoAnnotationManager* kam,
                                                 const QString &annotationName, bool isEndMarker)
{
    QString ret = annotationName;
    int uniqID = 0;

    while (true) {
        if (kam->annotation(ret)) {
            ret = QString("%1_%2").arg(annotationName).arg(++uniqID);
        } else {
            if (isEndMarker) {
                --uniqID;
                if (!uniqID)
                    ret = annotationName;
                else
                    ret = QString("%1_%2").arg(annotationName).arg(uniqID);
            }
            break;
        }
    }
    return ret;
}
