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

**

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

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

**

** This file is part of the Qt Mobility Components.

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** $QT_BEGIN_LICENSE:LGPL$

** No Commercial Usage

** This file contains pre-release code and may not be distributed.

** You may use this file in accordance with the terms and conditions

** contained in the Technology Preview License Agreement accompanying

** this package.

**

** GNU Lesser General Public License Usage

** Alternatively, this file may be used under the terms of the GNU Lesser

** General Public License version 2.1 as published by the Free Software

** Foundation and appearing in the file LICENSE.LGPL included in the

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

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

** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

**

** In addition, as a special exception, Nokia gives you certain additional

** rights.  These rights are described in the Nokia Qt LGPL Exception

** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

**

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

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** $QT_END_LICENSE$

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

#include "qcrmlgen.h"

#include "qcrmlparser_p.h"

#include <QTableWidget>

#include <QHBoxLayout>

#include <QVBoxLayout>

#include <QLabel>

#include <QLineEdit>

#include <QHeaderView>

#include <QPushButton>

#include <QAction>

#include <QMenuBar>

#include <QMenu>

#include <QComboBox>

#include <QMessageBox>

#include <QFileDialog>

#include <QRegExpValidator>

#include <QRadioButton>

#include <QButtonGroup>

#include <QDebug>

#include <QCloseEvent>

QTM_USE_NAMESPACE

bool checkID(const QString &id)

{

    if (id.length() > 8 || id.length() < 0)

        return false;

    bool ok = false;

    id.toUInt(&ok, 16);

    return ok;

}

#ifdef INCL_TYPE

TypeDelegate::TypeDelegate(QTableWidget *parent)

    : QItemDelegate(parent), m_parentTable(parent)

{

}

QWidget *TypeDelegate::createEditor(QWidget *parent,

        const QStyleOptionViewItem &,

        const QModelIndex &) const {

    QComboBox *editor = new QComboBox(parent);

    editor->addItem("int");

    editor->addItem("real");

    editor->addItem("string");

    editor->addItem("string8");

    editor->addItem("binary");

    return editor;

}

void TypeDelegate::setEditorData(QWidget *editor, const QModelIndex &index) const

{

    QTableWidgetItem * item = m_parentTable->item(index.row(), index.column());

    QComboBox *comboBox = qobject_cast<QComboBox *>(editor);

    if (!item->text().isEmpty() && comboBox->findText(item->text()) != -1) {

        comboBox->setCurrentIndex(comboBox->findText(item->text()));

    }

}

void TypeDelegate::setModelData(QWidget *editor,

                                QAbstractItemModel *,

                                const QModelIndex &index) const{

    QComboBox *comboBox = qobject_cast<QComboBox *>(editor);

    m_parentTable->item(index.row(), index.column())->setText(comboBox->currentText());

}

#endif

KeyIdDelegate::KeyIdDelegate(QTableWidget *parent)

    : QItemDelegate(parent), m_parentTable(parent)

{

}

QWidget *KeyIdDelegate::createEditor(QWidget *parent,

        const QStyleOptionViewItem &,

        const QModelIndex &) const {

    QLineEdit *editor = new QLineEdit(parent);

    QTableWidgetItem *item = m_parentTable->currentItem();

    if (!item->text().isEmpty()) {

        editor->setText(item->text());

    }

    QRegExpValidator *validator = new QRegExpValidator(QRegExp("([0-9]|[A-F]|[a-f]){1,8}"), editor);

    editor->setValidator(validator);

    return editor;

}

void KeyIdDelegate::setModelData(QWidget *editor,

                                QAbstractItemModel *,

                                const QModelIndex &index) const{

    QLineEdit *lineEdit = qobject_cast<QLineEdit *>(editor);

    m_parentTable->item(index.row(), index.column())->setText(lineEdit->text());

}

PathDelegate::PathDelegate(QTableWidget *parent)

    : QItemDelegate(parent), m_parentTable(parent)

{

}

QWidget *PathDelegate::createEditor(QWidget *parent,

        const QStyleOptionViewItem &,

        const QModelIndex &) const {

    QLineEdit *editor = new QLineEdit(parent);

    QTableWidgetItem *item = m_parentTable->currentItem();

    if (!item->text().isEmpty()) {

        editor->setText(item->text());

    }

    return editor;

}

void PathDelegate::setModelData(QWidget *editor,

                                QAbstractItemModel *,

                                const QModelIndex &index) const{

    QLineEdit *lineEdit = qobject_cast<QLineEdit *>(editor);

    m_parentTable->item(index.row(), index.column())->setText(lineEdit->text());

}

EditorWidget::EditorWidget():m_isModified(false) {

    m_RPropRadio = new QRadioButton("RProperty");

    m_CRepRadio = new QRadioButton("CRepository");

    QButtonGroup *targetGroup = new QButtonGroup(this);

    targetGroup->addButton(m_CRepRadio);

    targetGroup->addButton(m_RPropRadio);

    targetGroup->setExclusive(true);

    connect(targetGroup, SIGNAL(buttonClicked(QAbstractButton *)), this, SLOT(targetChanged(QAbstractButton *)));

    QHBoxLayout *targetLayout = new QHBoxLayout;

    targetLayout->addWidget(m_RPropRadio);

    targetLayout->addWidget(m_CRepRadio);

    m_RPropRadio->setChecked(true);

    m_repoLabel = new QLabel("Category ID", this);

    m_repoUID = new QLineEdit(this);

    QRegExpValidator *validator = new QRegExpValidator(QRegExp("([0-9]|[A-F]|[a-f]){1,8}"), this);

    m_repoUID->setValidator(validator);

    connect(m_repoUID, SIGNAL(textEdited(const QString &)), this, SLOT(setModified()));

    m_repoUID->setToolTip("Must be a hexidecimal number no longer than  8 digits");

    QHBoxLayout *repoLayout = new QHBoxLayout;

    repoLayout->addWidget(m_repoLabel);

    repoLayout->addWidget(m_repoUID);

    QStringList headers;

    headers << tr("Key ID")  << tr("Key path");

#ifdef INCL_TYPE

    headers << tr("Type");

#endif

    m_tableWidget = new QTableWidget(0,headers.count());

    connect(m_tableWidget, SIGNAL(cellChanged(int,int)), this, SLOT(setModified()));

    m_tableWidget->setHorizontalHeaderLabels(headers);

    m_tableWidget->horizontalHeader()->setResizeMode(QHeaderView::Stretch);

    m_tableWidget->setSelectionMode(QAbstractItemView::SingleSelection);

    m_keyIdDelegate = new KeyIdDelegate(m_tableWidget);

    m_tableWidget->setItemDelegateForColumn(EditorWidget::KeyId, m_keyIdDelegate);

    m_pathDelegate = new PathDelegate(m_tableWidget);

    m_tableWidget->setItemDelegateForColumn(EditorWidget::Path, m_pathDelegate);

#ifdef INCL_TYPE

    m_typeDelegate = new TypeDelegate(m_tableWidget);

    m_tableWidget->setItemDelegateForColumn(EditorWidget::Type,m_typeDelegate);

#endif

    m_addRowButton = new QPushButton(tr("Add Row"), this);

    connect(m_addRowButton, SIGNAL(clicked()), this, SLOT(addRow()));

    m_removeRowButton = new QPushButton(tr("Remove Row"), this);

    connect(m_removeRowButton, SIGNAL(clicked()), this, SLOT(removeRow()));

    QPushButton *upButton = new QPushButton(tr("/\\"), this);

    connect(upButton, SIGNAL(clicked()), this, SLOT(moveRowUp()));

    QPushButton *downButton = new QPushButton(tr("\\/"), this);

    connect(downButton, SIGNAL(clicked()), this, SLOT(moveRowDown()));

    QHBoxLayout *buttonsLayout = new QHBoxLayout;

    buttonsLayout->addWidget(m_addRowButton);

    buttonsLayout->addWidget(m_removeRowButton);

    buttonsLayout->addWidget(upButton);

    buttonsLayout->addWidget(downButton);

    QVBoxLayout *mainLayout = new QVBoxLayout();

    mainLayout->addLayout(targetLayout);

    mainLayout->addLayout(repoLayout);

    mainLayout->addWidget(m_tableWidget);

    mainLayout->addLayout(buttonsLayout);

    setLayout(mainLayout);

    addRow();

    setModified(false);

}

void EditorWidget::addRow()

{

    int row = m_tableWidget->rowCount();

    m_tableWidget->insertRow(row);

    QTableWidgetItem *item;

    item = new QTableWidgetItem;

    item->setToolTip("Must be a hexidecimal number no longer than 8 digits");

    m_tableWidget->setItem(row, EditorWidget::KeyId, item);

    item = new QTableWidgetItem("/");

    item->setToolTip("Must not be empty and must start with a /");

    m_tableWidget->setItem(row, EditorWidget::Path, item);

#ifdef INCL_TYPE

    item = new QTableWidgetItem("int");

    m_tableWidget->setItem(row, EditorWidget::Type, item);

#endif

    setModified(true);

}

void EditorWidget::removeRow()

{

    int row = m_tableWidget->currentRow();

    m_tableWidget->removeRow(row);

    row = m_tableWidget->currentRow();

    m_tableWidget->setCurrentCell(row, 0);

    setModified(true);

}

void EditorWidget::initNew()

{

    m_repoUID->clear();

    for(int i = m_tableWidget->rowCount() -1;  i >= 0; --i) {

        m_tableWidget->removeRow(i);

    }

    addRow();

    setModified(false);

}

void EditorWidget::save(const QString &filePath)

{

    QFile file(filePath);

    if (!file.open(QFile::ReadWrite)) {

        QMessageBox::warning(this, tr("File Error"),

                            tr("%1 could not be opened").arg(filePath));

        return;

    }

    file.resize(0);

    QString repoUID = m_repoUID->text();

    QString keyId;

    QString path;

#ifdef INCL_TYPE

    QString type;

#endif

    QString documentStart("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n");

    file.write(documentStart.toUtf8());

    QString repositoryElementStart("<repository target=\"%1\" uidValue=\"0x%2\">\n");

    QString target = m_RPropRadio->isChecked()?"RProperty":"CRepository";

    file.write(repositoryElementStart.arg(target).arg(repoUID).toUtf8());

#ifdef INCL_TYPE

    QString keyElementStart("    <key int=\"0x%1\" type=\"%2\" ref=\"%3\">\n");

#else

    QString keyElementStart("    <key int=\"0x%1\" ref=\"%2\">\n");

#endif

    QString keyElementEnd("    </key>\n");

    for(int i=0; i < m_tableWidget->rowCount(); i++) {

        keyId = m_tableWidget->item(i, EditorWidget::KeyId)->text();

        path = m_tableWidget-> item(i, EditorWidget::Path)->text().remove(0,1);

#ifdef INCL_TYPE

        type = m_tableWidget->item(i, EditorWidget::Type)->text();

        file.write(keyElementStart.arg(keyId).arg(type).arg(path).toUtf8());

#else

        file.write(keyElementStart.arg(keyId).arg(path).toUtf8());

#endif

        file.write(keyElementEnd.toUtf8());

    }

    QString repositoryElementEnd("</repository>\n");

    file.write(repositoryElementEnd.toUtf8());

    file.close();

    setModified(false);

}

void EditorWidget::open(const QString &filePath)

{

    QFile file(filePath);

    if (!file.open(QFile::ReadWrite)) {

        QMessageBox::warning(this, tr("File Error"),

                            tr("%1 could not be opened").arg(filePath));

        return;

    }

    for(int i = m_tableWidget->rowCount() - 1; i >=0; i--) {

        m_tableWidget->removeRow(i);

    }

    QList<KeyData> keyData;

    QCrmlParser parser;

    keyData = parser.parseQCrml(filePath);

    if (parser.error() != QCrmlParser::NoError) {

        QMessageBox::warning(this, tr("Parse Error"),

                            tr("%1 is not a valid qcrml file").arg(filePath));

        qWarning() << "Parsing error:" << parser.errorString();

        return;

    }

    for (int i = 0; i < keyData.count(); ++i) {

        if (i == 0) {

            m_repoUID->setText(QString::number(keyData.at(i).repoId(),16));

            if (keyData.at(i).target() == KeyData::RProperty)

                m_RPropRadio->click();

            else 

                m_CRepRadio->click();

        }

        addRow();

        m_tableWidget->item(i, EditorWidget::KeyId)->setText(QString::number(keyData.at(i).keyId(),16));

        m_tableWidget->item(i, EditorWidget::Path)->setText(keyData.at(i).path());

#ifdef INCL_TYPE

        m_tableWidget->item(i, EditorWidget::Type)->setText("int");

#endif

    }

    setModified(false);

}

bool EditorWidget::isModified()

{

    if (!m_isModified) {

        //check if the user has started a cell editor but hadn't

        //committed it's contents to the table by pressing enter

        QWidget *editorWidget = m_tableWidget->cellWidget(m_tableWidget->currentRow(),

                                            m_tableWidget->currentColumn());

        if (editorWidget) {

            switch(m_tableWidget->currentColumn()) {

                case(EditorWidget::KeyId):

                case(EditorWidget::Path): {

                    QLineEdit *lineEdit = qobject_cast<QLineEdit *>(editorWidget);

                    if (lineEdit->text() != m_tableWidget->currentItem()->text())

                        m_isModified = true;

                    break;

                }

#ifdef INCL_TYPE

                case(EditorWidget::Type): {

                    QComboBox *comboBox = qobject_cast<QComboBox *>(editorWidget);

                    if (comboBox->currentText() != m_tableWidget->currentItem()->text())

                        m_isModified = true;

                    break;

                }

#endif

                default:

                    qWarning() << "EditorWidget::isModified():- unknown widget type";

            }

        }

    }

    return m_isModified;

}

bool EditorWidget::verifyContents()

{

    //If any cells are currently edited add their contents

    //to the tableWidget

    QWidget *cellWidget = m_tableWidget->cellWidget(m_tableWidget->currentRow(), m_tableWidget->currentColumn());

    if (cellWidget) {

        QAbstractItemDelegate *delegate = m_tableWidget->itemDelegateForColumn(m_tableWidget->currentColumn());

        if (delegate) {

            delegate->setModelData(cellWidget,m_tableWidget->model(),m_tableWidget->currentIndex());

        }

    }

    QString repoUID = m_repoUID->text();

    if (!checkID(repoUID)) {

        QMessageBox::warning(this, "Invalid input", m_repoLabel->text() + "field is invalid, it must be a hexidecimal number no longer than 8 digits");

        m_repoUID->setFocus();

        return false;

    }

    QString keyId;

    QString path;

#ifdef INCL_TYPE

    QString type;

#endif

    for(int i=0; i < m_tableWidget->rowCount(); i++) {

        keyId = m_tableWidget->item(i, EditorWidget::KeyId)->text();

        if (!checkID(keyId)) {

            QMessageBox::warning(this, tr("Invalid Key ID"),

                    tr("The Key ID field is invalid, it must be a hexidecimal number no longer than 8 digits"));

            m_tableWidget->setCurrentCell(i, EditorWidget::KeyId);

            m_tableWidget->setFocus();

            return false;

        }

        path = m_tableWidget->item(i, EditorWidget::Path)->text();

        if (path.isEmpty() || !path.startsWith("/")) {

            QMessageBox::warning(this, tr("Invalid Path"),

                            tr("The Key Path field is invalid, it must not be empty and start with a /"));

            m_tableWidget->setCurrentCell(i, EditorWidget::Path);

            m_tableWidget->setFocus();

            return false;

        }

#ifdef INCL_TYPE

        type = m_tableWidget->item(i, EditorWidget::Type)->text();

        if (type.isEmpty()) {

            QMessageBox::warning(this, tr("Invalid Type"),

                                tr("The Type field is invalid, it must not be empty"));

            m_tableWidget->setCurrentCell(i, EditorWidget::Type);

            m_tableWidget->setFocus();

            return false;

        }

#endif

    }

    return true;

}

void EditorWidget::setModified(bool b) {

    m_isModified = b;

}

void EditorWidget::moveRowUp()

{

    int currentRow = m_tableWidget->currentRow();

    int currentColumn = m_tableWidget->currentColumn();

    if (currentRow  < 1) {

        return;

    }

    m_tableWidget->insertRow(currentRow - 1);

    for (int i = 0; i < m_tableWidget->columnCount(); ++i) {

        m_tableWidget->setItem(currentRow - 1, i,

            m_tableWidget->takeItem(currentRow + 1, i));

    }

    m_tableWidget->setCurrentCell(currentRow -1, currentColumn);

    m_tableWidget->removeRow(currentRow+1);

}

void EditorWidget::moveRowDown()

{

    int currentRow = m_tableWidget->currentRow();

    int currentColumn = m_tableWidget->currentColumn();

    if (currentRow == -1 || currentRow == m_tableWidget->rowCount() - 1) {

        return;

    }

    m_tableWidget->insertRow(currentRow + 2);

    for (int i = 0; i < m_tableWidget->columnCount(); ++i) {

        m_tableWidget->setItem(currentRow + 2, i,

            m_tableWidget->takeItem(currentRow, i));

    }

    m_tableWidget->setCurrentCell(currentRow + 2, currentColumn);

    m_tableWidget->removeRow(currentRow);

}

void EditorWidget::targetChanged(QAbstractButton *button)

{

    if (button == m_RPropRadio)

        m_repoLabel->setText("Category ID");

    else

        m_repoLabel->setText("Repository ID");

}

QCrmlGenerator::QCrmlGenerator()

{

    QMenu *fileMenu = menuBar()->addMenu(tr("&File"));

    newAction = new QAction(tr("&New"), this);

    connect(newAction, SIGNAL(triggered()) , this, SLOT(newFile()));

    openAction = new QAction(tr("&Open"), this);

    connect(openAction, SIGNAL(triggered()), this, SLOT(openFile()));

    saveAction = new QAction(tr("&Save"), this);

    connect(saveAction, SIGNAL(triggered()), this, SLOT(saveFile()));

    saveAsAction = new QAction(tr("Save &As..."), this);

    connect(saveAsAction, SIGNAL(triggered()), this, SLOT(saveFileAs()));

    exitAction = new QAction(tr("&Exit"), this);

    connect(exitAction, SIGNAL(triggered()), this, SLOT(close()));

    fileMenu->addAction(newAction);

    fileMenu->addAction(openAction);

    fileMenu->addSeparator();

    fileMenu->addAction(saveAction);