/****************************************************************************

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** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

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** Contact: Nokia Corporation (qt-info@nokia.com)

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** This file is part of the QtSCriptTools module of the Qt Toolkit.

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** contained in the Technology Preview License Agreement accompanying

** this package.

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** GNU Lesser General Public License Usage

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** packaging of this file.  Please review the following information to

** ensure the GNU Lesser General Public License version 2.1 requirements

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** If you have questions regarding the use of this file, please contact

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** $QT_END_LICENSE$

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****************************************************************************/

#include "qscriptdebuggerscriptsmodel_p.h"

#include "qscriptscriptdata_p.h"

#include "private/qabstractitemmodel_p.h"

#include <QtCore/qfileinfo.h>

#include <QtCore/qpair.h>

#include <QtCore/qdebug.h>

QT_BEGIN_NAMESPACE

class QScriptDebuggerScriptsModelPrivate

    : public QAbstractItemModelPrivate

{

    Q_DECLARE_PUBLIC(QScriptDebuggerScriptsModel)

public:

    struct Node {

        Node(qint64 sid, const QScriptScriptData &dt)

            : scriptId(sid), data(dt) {}

        qint64 scriptId;

        QScriptScriptData data;

        QList<QPair<QString, int> > functionsInfo;

        QSet<int> executableLineNumbers;

    };

    QScriptDebuggerScriptsModelPrivate();

    ~QScriptDebuggerScriptsModelPrivate();

    Node *findScriptNode(qint64 scriptId) const;

    int nextNodeId;

    QMap<int, Node*> nodes;

};

QScriptDebuggerScriptsModelPrivate::QScriptDebuggerScriptsModelPrivate()

{

    nextNodeId = 0;

}

QScriptDebuggerScriptsModelPrivate::~QScriptDebuggerScriptsModelPrivate()

{

    qDeleteAll(nodes);

}

QScriptDebuggerScriptsModelPrivate::Node *QScriptDebuggerScriptsModelPrivate::findScriptNode(qint64 scriptId) const

{

    QMap<int, Node*>::const_iterator it;

    for (it = nodes.constBegin(); it != nodes.constEnd(); ++it) {

        Node *n = it.value();

        if (n->scriptId == scriptId)

            return n;

    }

    return 0;

}

QScriptDebuggerScriptsModel::QScriptDebuggerScriptsModel(QObject *parent)

    : QAbstractItemModel(*new QScriptDebuggerScriptsModelPrivate, parent)

{

}

QScriptDebuggerScriptsModel::~QScriptDebuggerScriptsModel()

{

}

void QScriptDebuggerScriptsModel::removeScript(qint64 id)

{

    Q_D(QScriptDebuggerScriptsModel);

    QMap<int, QScriptDebuggerScriptsModelPrivate::Node*>::iterator it;

    for (it = d->nodes.begin(); it != d->nodes.end(); ++it) {

        QScriptDebuggerScriptsModelPrivate::Node *n = it.value();

        if (n->scriptId == id) {

            d->nodes.erase(it);

            delete n;

            break;

        }

    }

}

void QScriptDebuggerScriptsModel::addScript(qint64 sid, const QScriptScriptData &data)

{

    Q_D(QScriptDebuggerScriptsModel);

    int id = d->nextNodeId;

    ++d->nextNodeId;

    d->nodes.insert(id, new QScriptDebuggerScriptsModelPrivate::Node(sid, data));

}

void QScriptDebuggerScriptsModel::addExtraScriptInfo(

    qint64 sid, const QMap<QString, int> &functionsInfo,

    const QSet<int> &executableLineNumbers)

{

    Q_D(QScriptDebuggerScriptsModel);

    QScriptDebuggerScriptsModelPrivate::Node *node = d->findScriptNode(sid);

    if (!node)

        return;

    QList<QPair<QString, int> > lst;

    QMap<QString, int>::const_iterator it;

    for (it = functionsInfo.constBegin(); it != functionsInfo.constEnd(); ++it)

        lst.append(qMakePair(it.key(), it.value()));

    node->functionsInfo = lst;

    node->executableLineNumbers = executableLineNumbers;

}

void QScriptDebuggerScriptsModel::commit()

{

    layoutAboutToBeChanged();

    layoutChanged();

}

QScriptScriptData QScriptDebuggerScriptsModel::scriptData(qint64 sid) const

{

    Q_D(const QScriptDebuggerScriptsModel);

    QScriptDebuggerScriptsModelPrivate::Node *node = d->findScriptNode(sid);

    if (!node)

        return QScriptScriptData();

    return node->data;

}

QScriptScriptMap QScriptDebuggerScriptsModel::scripts() const

{

    Q_D(const QScriptDebuggerScriptsModel);

    QScriptScriptMap result;

    QMap<int, QScriptDebuggerScriptsModelPrivate::Node*>::const_iterator it;

    for (it = d->nodes.constBegin(); it != d->nodes.constEnd(); ++it) {

        QScriptDebuggerScriptsModelPrivate::Node *n = it.value();

        result.insert(n->scriptId, n->data);

    }

    return result;

}

qint64 QScriptDebuggerScriptsModel::resolveScript(const QString &fileName) const

{

    Q_D(const QScriptDebuggerScriptsModel);

    QMap<int, QScriptDebuggerScriptsModelPrivate::Node*>::const_iterator it;

    for (it = d->nodes.constBegin(); it != d->nodes.constEnd(); ++it) {

        QScriptDebuggerScriptsModelPrivate::Node *n = it.value();

        if (n->data.fileName() == fileName)

            return n->scriptId;

    }

    return -1;

}

QSet<int> QScriptDebuggerScriptsModel::executableLineNumbers(qint64 scriptId) const

{

    Q_D(const QScriptDebuggerScriptsModel);

    QScriptDebuggerScriptsModelPrivate::Node *node = d->findScriptNode(scriptId);

    if (!node)

        return QSet<int>();

    return node->executableLineNumbers;

}

QModelIndex QScriptDebuggerScriptsModel::indexFromScriptId(qint64 sid) const

{

    Q_D(const QScriptDebuggerScriptsModel);

    int row = 0;

    QMap<int, QScriptDebuggerScriptsModelPrivate::Node*>::const_iterator it;

    for (it = d->nodes.constBegin(); it != d->nodes.constEnd(); ++it, ++row) {

        QScriptDebuggerScriptsModelPrivate::Node *n = it.value();

        if (n->scriptId == sid)

            return createIndex(row, 0, it.key() << 12);

    }

    return QModelIndex();

}

qint64 QScriptDebuggerScriptsModel::scriptIdFromIndex(const QModelIndex &index) const

{

    Q_D(const QScriptDebuggerScriptsModel);

    if (!index.isValid())

        return -1;

    int id = index.internalId();

    if (id & 1)

        return -1;

    QScriptDebuggerScriptsModelPrivate::Node *n = d->nodes.value(id >> 12);

    if (!n)

        return -1;

    return n->scriptId;

}

QPair<QString, int> QScriptDebuggerScriptsModel::scriptFunctionInfoFromIndex(const QModelIndex &index) const

{

    Q_D(const QScriptDebuggerScriptsModel);

    QPair<QString, int> result;

    if (!index.isValid())

        return result;

    int id = index.internalId();

    if (!(id & 1))

        return result;

    QScriptDebuggerScriptsModelPrivate::Node *node = d->nodes.value(id >> 12);

    if (!node)

        return result;

    int functionIndex = (id >> 1) & ((1 << 11) - 1);

    result = node->functionsInfo.at(functionIndex);

    return result;

}

/*!

  \reimp

*/

QModelIndex QScriptDebuggerScriptsModel::index(int row, int column, const QModelIndex &parent) const

{

    Q_D(const QScriptDebuggerScriptsModel);

    if (!parent.isValid()) {

        if ((row < 0) || (row >= d->nodes.size()))

            return QModelIndex();

        if (column != 0)

            return QModelIndex();

        return createIndex(row, column, d->nodes.keys().at(row) << 12);

    }

    int id = parent.internalId();

    if (id & 1)

        return QModelIndex();

    return createIndex(row, column, id | (row << 1) | 1); 

}

/*!

  \reimp

*/

QModelIndex QScriptDebuggerScriptsModel::parent(const QModelIndex &index) const

{

    Q_D(const QScriptDebuggerScriptsModel);

    if (!index.isValid())

        return QModelIndex();

    int id = index.internalId();

    if (!(id & 1))

        return QModelIndex();

    QScriptDebuggerScriptsModelPrivate::Node *n = d->nodes.value(id >> 12);

    if (!n)

        return QModelIndex();

    return indexFromScriptId(n->scriptId);

}

/*!

  \reimp

*/

int QScriptDebuggerScriptsModel::columnCount(const QModelIndex &) const

{

    return 1;

}

/*!

  \reimp

*/

int QScriptDebuggerScriptsModel::rowCount(const QModelIndex &parent) const

{

    Q_D(const QScriptDebuggerScriptsModel);

    if (!parent.isValid())

        return d->nodes.size();

    int id = parent.internalId();

    if (id & 1)

        return 0;

    QScriptDebuggerScriptsModelPrivate::Node *n = d->nodes.value(id >> 12);

    if (!n)

        return 0;

    return n->functionsInfo.size();

}

/*!

  \reimp

*/

QVariant QScriptDebuggerScriptsModel::data(const QModelIndex &index, int role) const

{

    Q_D(const QScriptDebuggerScriptsModel);

    if (!index.isValid())

        return QVariant();

    int id = index.internalId();

    QScriptDebuggerScriptsModelPrivate::Node *node = d->nodes.value(id >> 12);

    if (!node)

        return QVariant();

    if (!(id & 1)) {

        if (role == Qt::DisplayRole) {

            QString fn = node->data.fileName();

            if (fn.isEmpty())

                fn = QString::fromLatin1("<anonymous script, id=%0>").arg(node->scriptId);

            return fn;

        } else if (role == Qt::ToolTipRole) {

            QString fn = node->data.fileName();

            if (QFileInfo(fn).fileName() != fn)

                return fn;

        } else if (role == Qt::UserRole) {

            return node->scriptId;

        } else if (role == Qt::UserRole+1) {

            return node->data.baseLineNumber();

        } else if (role == Qt::UserRole+2) {

            return node->data.contents();

        }

    } else {

        int functionIndex = (id >> 1) & ((1 << 11) - 1);

        if (role == Qt::DisplayRole)

            return node->functionsInfo[functionIndex].first;

    }

    return QVariant();

}

QT_END_NAMESPACE