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#include "qquickplatformcolordialog_p.h"
#include "qquickitem.h"

#include <private/qguiapplication_p.h>
#include <QWindow>
#include <QQuickView>
#include <QQuickWindow>

QT_BEGIN_NAMESPACE

/*!
    \qmltype ColorDialog
    \instantiates QQuickPlatformColorDialog
    \inqmlmodule QtQuick.Dialogs
    \ingroup qtquickdialogs
    \brief Dialog component for choosing a color.
    \since 5.1

    ColorDialog allows the user to select a color. The dialog is initially
    invisible. You need to set the properties as desired first, then set
    \l visible to true or call \l open().

    Here is a minimal example to open a color dialog and exit after the user
    chooses a color:

    \qml
    import QtQuick 2.2
    import QtQuick.Dialogs 1.0

    ColorDialog {
        id: colorDialog
        title: "Please choose a color"
        onAccepted: {
            console.log("You chose: " + colorDialog.color)
            Qt.quit()
        }
        onRejected: {
            console.log("Canceled")
            Qt.quit()
        }
        Component.onCompleted: visible = true
    }
    \endqml

    A ColorDialog window is automatically transient for its parent window. So
    whether you declare the dialog inside an \l Item or inside a \l Window, the
    dialog will appear centered over the window containing the item, or over
    the Window that you declared.

    The implementation of ColorDialog will be a platform color dialog if
    possible. If that isn't possible, then it will try to instantiate a
    \l QColorDialog. If that also isn't possible, then it will fall back to a QML
    implementation, DefaultColorDialog.qml. In that case you can customize the
    appearance by editing this file. DefaultColorDialog.qml contains a Rectangle
    to hold the dialog's contents, because certain embedded systems do not
    support multiple top-level windows. When the dialog becomes visible, it
    will automatically be wrapped in a Window if possible, or simply reparented
    on top of the main window if there can only be one window.
*/

/*!
    \qmlsignal QtQuick::Dialogs::ColorDialog::accepted

    This signal is emitted when the user has finished using the
    dialog. You can then inspect the \l color property to get the selection.

    Example:

    \qml
    ColorDialog {
        onAccepted: { console.log("Selected color: " + color) }
    }
    \endqml

    The corresponding handler is \c onAccepted.
*/

/*!
    \qmlsignal QtQuick::Dialogs::ColorDialog::rejected

    This signal is emitted when the user has dismissed the dialog,
    either by closing the dialog window or by pressing the Cancel button.

    The corresponding handler is \c onRejected.
*/

/*!
    \class QQuickPlatformColorDialog
    \inmodule QtQuick.Dialogs
    \internal

    \brief The QQuickPlatformColorDialog class provides a color dialog

    The dialog is implemented via the QPlatformColorDialogHelper when possible;
    otherwise it falls back to a QColorDialog or a QML implementation.

    \since 5.1
*/

/*!
    Constructs a color dialog with parent window \a parent.
*/
QQuickPlatformColorDialog::QQuickPlatformColorDialog(QObject *parent) :
    QQuickAbstractColorDialog(parent)
{
}

/*!
    Destroys the color dialog.
*/
QQuickPlatformColorDialog::~QQuickPlatformColorDialog()
{
    if (m_dlgHelper)
        m_dlgHelper->hide();
    delete m_dlgHelper;
}

QPlatformColorDialogHelper *QQuickPlatformColorDialog::helper()
{
    QQuickItem *parentItem = qobject_cast<QQuickItem *>(parent());
    if (parentItem)
        m_parentWindow = parentItem->window();

    if ( !m_dlgHelper && QGuiApplicationPrivate::platformTheme()->
            usePlatformNativeDialog(QPlatformTheme::ColorDialog) ) {
        m_dlgHelper = static_cast<QPlatformColorDialogHelper *>(QGuiApplicationPrivate::platformTheme()
           ->createPlatformDialogHelper(QPlatformTheme::ColorDialog));
        if (!m_dlgHelper)
            return m_dlgHelper;
        connect(m_dlgHelper, SIGNAL(accept()), this, SLOT(accept()));
        connect(m_dlgHelper, SIGNAL(reject()), this, SLOT(reject()));
        connect(m_dlgHelper, SIGNAL(currentColorChanged(QColor)), this, SLOT(setCurrentColor(QColor)));
        connect(m_dlgHelper, SIGNAL(colorSelected(QColor)), this, SLOT(setColor(QColor)));
    }

    return m_dlgHelper;
}

/*!
    \qmlproperty bool ColorDialog::visible

    This property holds whether the dialog is visible. By default this is
    false.

    \sa modality
*/

/*!
    \qmlproperty Qt::WindowModality ColorDialog::modality

    Whether the dialog should be shown modal with respect to the window
    containing the dialog's parent Item, modal with respect to the whole
    application, or non-modal.

    By default it is \c Qt.NonModal.

    Modality does not mean that there are any blocking calls to wait for the
    dialog to be accepted or rejected; it's only that the user will be
    prevented from interacting with the parent window and/or the application
    windows at the same time.

    You probably need to write an onAccepted handler if you wish to change a
    color after the user has pressed the OK button, or an
    onCurrentColorChanged handler if you wish to react to every change the
    user makes while the dialog is open.

    On MacOS the color dialog is only allowed to be non-modal.
*/

/*!
    \qmlmethod void ColorDialog::open()

    Shows the dialog to the user. It is equivalent to setting \l visible to
    true.
*/

/*!
    \qmlmethod void ColorDialog::close()

    Closes the dialog.
*/

/*!
    \qmlproperty string ColorDialog::title

    The title of the dialog window.
*/

/*!
    \qmlproperty bool ColorDialog::showAlphaChannel

    Whether the dialog will provide a means of changing the opacity.

    By default, this property is true. This property must be set to the desired
    value before opening the dialog. Usually the alpha channel is represented
    by an additional slider control.
*/

/*!
    \qmlproperty color ColorDialog::color

    The color which the user selected.

    \note This color is not always the same as the color held by the
    currentColor property since the user can choose different colors before
    finally selecting the one to use.

    \sa currentColor
*/

/*!
    \qmlproperty color ColorDialog::currentColor

    The color which the user has currently selected.

    For the color that is set when the dialog is accepted, use the \l color
    property.

    \sa color
*/

QT_END_NAMESPACE
