// SPDX-License-Identifier: MIT

#include "windowpreview.h"
#include "previewplacement.h"

#include <QGuiApplication>
#include <QQmlComponent>
#include <QScreen>
#include <abstracttasksmodel.h>

WindowPreview::WindowPreview()
{
    QQmlComponent component(&m_engine, QUrl(QStringLiteral("qrc:/Preview.qml")));
    m_window.reset(qobject_cast<QQuickWindow *>(component.create()));
    if (!m_window) {
        qFatal("Cannot create window preview: %s", qPrintable(component.errorString()));
    }
}

void WindowPreview::show(const QModelIndex &task, int panelLocation)
{
    const QVariantList ids = task.data(TaskManager::AbstractTasksModel::WinIdList).toList();
    m_window->setProperty("windowId", ids.isEmpty() ? QString() : ids.first().toString());
    m_window->setProperty("windowTitle", task.data(Qt::DisplayRole).toString());
    m_window->setProperty("position", task.parent().isValid() ? task.row() + 1 : 1);
    m_window->setProperty("count", task.parent().isValid() ? task.model()->rowCount(task.parent()) : 1);
    m_panelLocation = panelLocation;
    // Plasma sizes the dialog from mainItem when it becomes visible.
    m_window->show();

    setAnchor({});
}

void WindowPreview::setAnchor(const QRect &button)
{
    if (!m_window->isVisible()) {
        return;
    }
    QScreen *screen = button.isValid() ? QGuiApplication::screenAt(button.center()) : nullptr;
    if (!screen) {
        screen = QGuiApplication::primaryScreen();
    }
    if (screen) {
        m_window->setScreen(screen);
        m_window->setPosition(previewPosition(button, screen->availableGeometry(), m_window->size(), m_panelLocation));
    }
}

void WindowPreview::hide()
{
    m_window->hide();
    m_window->setProperty("windowId", QString());
}