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 ** Copyright (C) 2016 Ivan Vizir <define-true-false@yandex.com>
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 ** $QT_END_LICENSE$
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 ****************************************************************************/

#include "qquickjumplist_p.h"
#include "qquickjumplistcategory_p.h"
#include <QWinJumpList>

QT_BEGIN_NAMESPACE

/*!
    \qmltype JumpList
    \instantiates QQuickJumpList
    \inqmlmodule QtWinExtras

    \brief Enables you to modify the application Jump List.

    \since QtWinExtras 1.0

    The JumpList type enables you to modify Windows Jump Lists.

    An application can use Jump Lists to provide users with faster access to
    files or to display shortcuts to tasks or commands.
 */

/*!
    \class QQuickJumpList
    \internal
 */

QQuickJumpList::QQuickJumpList(QObject *parent) :
    QObject(parent)
{
}

QQuickJumpList::~QQuickJumpList() = default;

/*!
    \qmlproperty JumpListCategory JumpList::recent
    \readonly

    The recent items category.
 */
QQuickJumpListCategory *QQuickJumpList::recent() const
{
    if (!m_recent) {
        auto *that = const_cast<QQuickJumpList *>(this);
        that->m_recent = new QQuickJumpListCategory(that);
        connect(m_recent, &QQuickJumpListCategory::visibilityChanged, that, &QQuickJumpList::rebuild);
        m_recent->setVisible(false);
    }
    return m_recent;
}

/*!
    \qmlproperty JumpListCategory JumpList::frequent
    \readonly

    The frequent items category.
 */
QQuickJumpListCategory *QQuickJumpList::frequent() const
{
    if (!m_frequent) {
        auto *that = const_cast<QQuickJumpList *>(this);
        that->m_frequent = new QQuickJumpListCategory(that);
        connect(m_frequent, &QQuickJumpListCategory::visibilityChanged, that, &QQuickJumpList::rebuild);
        m_frequent->setVisible(false);
    }
    return m_frequent;
}

/*!
    \qmlproperty JumpListCategory JumpList::tasks

    The tasks category.
 */
QQuickJumpListCategory *QQuickJumpList::tasks() const
{
    if (!m_tasks) {
        auto *that = const_cast<QQuickJumpList *>(this);
        that->m_tasks = new QQuickJumpListCategory(that);
        connect(m_tasks, &QQuickJumpListCategory::visibilityChanged, that, &QQuickJumpList::rebuild);
    }
    return m_tasks;
}

void QQuickJumpList::setTasks(QQuickJumpListCategory *tasks)
{
    if (m_tasks != tasks) {
        if (m_tasks)
            disconnect(m_tasks, &QQuickJumpListCategory::visibilityChanged, this, &QQuickJumpList::rebuild);
        delete m_tasks;
        m_tasks = tasks;
        if (m_tasks)
            connect(m_tasks, &QQuickJumpListCategory::visibilityChanged, this, &QQuickJumpList::rebuild);
        emit tasksChanged();
    }
}

/*!
    \qmlproperty list<QtObject> JumpList::data
    \internal
 */
QQmlListProperty<QObject> QQuickJumpList::data()
{
    return QQmlListProperty<QObject>(this, this, &QQuickJumpList::data_append, nullptr, nullptr, nullptr);
}

/*!
    \qmlproperty list<JumpListCategory> JumpList::categories

    A list of custom categories.
 */
QQmlListProperty<QQuickJumpListCategory> QQuickJumpList::categories()
{
    return QQmlListProperty<QQuickJumpListCategory>(this, this, &QQuickJumpList::categories_count, &QQuickJumpList::categories_at);
}

void QQuickJumpList::classBegin()
{
}

void QQuickJumpList::componentComplete()
{
    rebuild();
}

void QQuickJumpList::rebuild()
{
    QWinJumpList jumpList;
    jumpList.recent()->setVisible(m_recent && m_recent->isVisible());
    jumpList.frequent()->setVisible(m_frequent && m_frequent->isVisible());
    if (m_tasks && m_tasks->isVisible()) {
        jumpList.tasks()->setVisible(true);
        const auto items = m_tasks->toItemList();
        for (QWinJumpListItem *item : items)
            jumpList.tasks()->addItem(item);
    }
    for (QQuickJumpListCategory *category : qAsConst(m_categories)) {
        if (category->isVisible())
            jumpList.addCategory(category->title(), category->toItemList())->setVisible(true);
    }
}

void QQuickJumpList::data_append(QQmlListProperty<QObject> *property, QObject *object)
{
    if (auto *category = qobject_cast<QQuickJumpListCategory *>(object)) {
        auto *jumpList = static_cast<QQuickJumpList *>(property->object);
        connect(category, &QQuickJumpListCategory::visibilityChanged, jumpList, &QQuickJumpList::rebuild);
        jumpList->m_categories.append(category);
        emit jumpList->categoriesChanged();
    }
}

int QQuickJumpList::categories_count(QQmlListProperty<QQuickJumpListCategory> *property)
{
    return static_cast<QQuickJumpList *>(property->object)->m_categories.count();
}

QQuickJumpListCategory *QQuickJumpList::categories_at(QQmlListProperty<QQuickJumpListCategory> *property, int index)
{
    return static_cast<QQuickJumpList *>(property->object)->m_categories.value(index);
}

QT_END_NAMESPACE