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/*
 * Copyright (c) 2012-2014 Tobias Markmann
 * Licensed under the simplified BSD license.
 * See Documentation/Licenses/BSD-simplified.txt for more information.
 */

/*
 * Copyright (c) 2016 Isode Limited.
 * All rights reserved.
 * See the COPYING file for more information.
 */

#include <Swift/QtUI/QtVCardWidget/QtVCardOrganizationField.h>

#include <boost/algorithm/string.hpp>

#include <QGridLayout>
#include <QHBoxLayout>
#include <QHeaderView>

#include <Swift/QtUI/QtSwiftUtil.h>

namespace Swift {

QtVCardOrganizationField::QtVCardOrganizationField(QWidget* parent, QGridLayout *layout, bool editable) :
    QtVCardGeneralField(parent, layout, editable, layout->rowCount(), tr("Organization"), false, false), organizationLabel(nullptr), organizationLineEdit(nullptr), unitsTreeWidget(nullptr), itemDelegate(nullptr) {
    connect(this, SIGNAL(editableChanged(bool)), SLOT(handleEditibleChanged(bool)));
}

QtVCardOrganizationField::~QtVCardOrganizationField() {
    disconnect(this, SLOT(handleEditibleChanged(bool)));
}

void QtVCardOrganizationField::setupContentWidgets() {
    organizationLabel = new QLabel(this);
    organizationLabel->setTextInteractionFlags(Qt::TextSelectableByMouse | Qt::TextSelectableByKeyboard);
    organizationLineEdit = new QtResizableLineEdit(this);
    QHBoxLayout* organizationLayout = new QHBoxLayout();
    organizationLayout->addWidget(organizationLabel);
    organizationLayout->addWidget(organizationLineEdit);

    getGridLayout()->addLayout(organizationLayout, getGridLayout()->rowCount()-1, 2, 1, 2, Qt::AlignVCenter);

    itemDelegate = new QtRemovableItemDelegate(style());

    unitsTreeWidget = new QTreeWidget(this);
    connect(unitsTreeWidget->model(), SIGNAL(rowsRemoved(QModelIndex, int, int)), SLOT(handleRowsRemoved(QModelIndex,int,int)));
    unitsTreeWidget->setColumnCount(2);
    unitsTreeWidget->header()->setStretchLastSection(false);
    unitsTreeWidget->header()->resizeSection(1, itemDelegate->sizeHint(QStyleOptionViewItem(), QModelIndex()).width());

#if QT_VERSION >= 0x050000
    unitsTreeWidget->header()->setSectionResizeMode(0, QHeaderView::Stretch);
#else
    unitsTreeWidget->header()->setResizeMode(0, QHeaderView::Stretch);
#endif

    unitsTreeWidget->setHeaderHidden(true);
    unitsTreeWidget->setRootIsDecorated(false);
    unitsTreeWidget->setEditTriggers(QAbstractItemView::DoubleClicked);
    unitsTreeWidget->setItemDelegateForColumn(1, itemDelegate);
    connect(unitsTreeWidget, SIGNAL(itemChanged(QTreeWidgetItem*,int)), SLOT(handleItemChanged(QTreeWidgetItem*,int)));
    getGridLayout()->addWidget(unitsTreeWidget, getGridLayout()->rowCount()-1, 4, 2, 1);

    QTreeWidgetItem* item = new QTreeWidgetItem(QStringList("") << "");
    item->setFlags(item->flags() | Qt::ItemIsEditable);
    unitsTreeWidget->addTopLevelItem(item);

    getTagComboBox()->hide();
    organizationLabel->hide();
    childWidgets << organizationLabel << organizationLineEdit << unitsTreeWidget;
}

bool QtVCardOrganizationField::isEmpty() const {
    return organizationLineEdit->text().isEmpty() && unitsTreeWidget->model()->rowCount() != 0;
}

void QtVCardOrganizationField::setOrganization(const VCard::Organization& organization) {
    organizationLineEdit->setText(P2QSTRING(organization.name));
    unitsTreeWidget->clear();
    for (const auto& unit : organization.units) {
        QTreeWidgetItem* item = new QTreeWidgetItem(QStringList(P2QSTRING(unit)) << "");
        item->setFlags(item->flags() | Qt::ItemIsEditable);
        unitsTreeWidget->addTopLevelItem(item);
    }

    QTreeWidgetItem* item = new QTreeWidgetItem(QStringList("") << "");
    item->setFlags(item->flags() | Qt::ItemIsEditable);
    unitsTreeWidget->addTopLevelItem(item);
}

VCard::Organization QtVCardOrganizationField::getOrganization() const {
    VCard::Organization organization;
    organization.name = Q2PSTRING(organizationLineEdit->text());
    for(int i=0; i < unitsTreeWidget->topLevelItemCount(); ++i) {
        QTreeWidgetItem* row = unitsTreeWidget->topLevelItem(i);
        if (!row->text(0).isEmpty()) {
            organization.units.push_back(Q2PSTRING(row->text(0)));
        }
    }

    return organization;
}

void QtVCardOrganizationField::handleEditibleChanged(bool isEditable) {
    assert(organizationLineEdit);
    assert(unitsTreeWidget);

    organizationLineEdit->setVisible(isEditable);
    organizationLabel->setVisible(!isEditable);

    if (!isEditable) {
        QString label;
        for(int i=0; i < unitsTreeWidget->topLevelItemCount(); ++i) {
            QTreeWidgetItem* row = unitsTreeWidget->topLevelItem(i);
            if (!row->text(0).isEmpty()) {
                label += row->text(0) + ", ";
            }
        }
        label += organizationLineEdit->text();
        organizationLabel->setText(label);
    }
    unitsTreeWidget->setVisible(isEditable);
}

void QtVCardOrganizationField::handleItemChanged(QTreeWidgetItem *, int) {
    guaranteeEmptyRow();
}

void QtVCardOrganizationField::handleRowsRemoved(const QModelIndex&, int, int) {
    guaranteeEmptyRow();
}

void QtVCardOrganizationField::guaranteeEmptyRow() {
    bool hasEmptyRow = false;
    QList<QTreeWidgetItem*> rows = unitsTreeWidget->findItems("", Qt::MatchFixedString);
    for (auto row : rows) {
        if (row->text(0).isEmpty()) {
            hasEmptyRow = true;
        }
    }

    if (!hasEmptyRow) {
        QTreeWidgetItem* item = new QTreeWidgetItem(QStringList("") << "");
        item->setFlags(item->flags() | Qt::ItemIsEditable);
        unitsTreeWidget->addTopLevelItem(item);
        unitsTreeWidget->setCurrentItem(item);
    }
}

}