/****************************************************************************
**
** Copyright (C) 2019 Luxoft Sweden AB
** Copyright (C) 2018 Pelagicore AG
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Neptune 3 UI.
**
** $QT_BEGIN_LICENSE:GPL-QTAS$
** Commercial License Usage
** Licensees holding valid commercial Qt Automotive Suite licenses may use
** this file in accordance with the commercial license agreement provided
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** contained in a written agreement between you and The Qt Company.  For
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** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 or (at your option) any later version
** approved by the KDE Free Qt Foundation. The licenses are as published by
** the Free Software Foundation and appearing in the file LICENSE.GPL3
** included in the packaging of this file. Please review the following
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** SPDX-License-Identifier: GPL-3.0
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****************************************************************************/

import QtQuick
import QtQuick.Window
import QtQuick.Controls
import QtQuick.Controls.impl
import QtQuick.Templates as T
import shared.utils
import shared.Style
import shared.Sizes

T.ComboBox {
    id: control

    font.pixelSize: Sizes.fontSizeM

    implicitWidth: Math.max(background ? background.implicitWidth : 0,
                            contentItem.implicitWidth + leftPadding + rightPadding)
    implicitHeight: Math.max(background ? background.implicitHeight : 0,
                             Math.max(contentItem.implicitHeight,
                                      indicator ? indicator.implicitHeight : 0) + topPadding + bottomPadding)
    baselineOffset: contentItem.y + contentItem.baselineOffset

    leftPadding: padding + (!control.mirrored || !indicator || !indicator.visible ? 0 : indicator.width + spacing)
    rightPadding: padding + (control.mirrored || !indicator || !indicator.visible ? 0 : indicator.width + spacing)

    Cursor {
        onActivated: {
            control.clicked();
        }
    }

    delegate: ItemDelegate {
        width: parent.width
        text: control.textRole ? (Array.isArray(control.model) ? modelData[control.textRole] : model[control.textRole]) : modelData
        font.weight: control.currentIndex === index ? Font.DemiBold : Font.Normal
        highlighted: control.highlightedIndex === index
        hoverEnabled: control.hoverEnabled
    }

    indicator: Image {
        x: control.mirrored ? control.padding : control.width - width - control.padding
        y: control.topPadding + (control.availableHeight - height) / 2
        source: "image://default/double-arrow/" + (!control.editable && control.visualFocus ? Default.focusColor : Default.textColor)
        sourceSize.width: width
        sourceSize.height: height
        opacity: enabled ? Style.opacityHigh : Style.defaultDisabledOpacity
    }

    contentItem: T.TextField {
        leftPadding: !control.mirrored ? 12 : control.editable && activeFocus ? 3 : 1
        rightPadding: control.mirrored ? 12 : control.editable && activeFocus ? 3 : 1
        topPadding: 6 - control.padding
        bottomPadding: 6 - control.padding

        text: control.editable ? control.editText : control.displayText

        enabled: control.editable
        autoScroll: control.editable
        readOnly: control.popup.visible
        inputMethodHints: control.inputMethodHints
        validator: control.validator

        font: control.font
        color: !control.editable && control.visualFocus ? Default.focusColor : control.Style.contrastColor
        selectionColor: control.Style.accentColor
        selectedTextColor: control.Style.contrastColor
        horizontalAlignment: Text.AlignLeft
        verticalAlignment: Text.AlignVCenter
        opacity: control.enabled ? Style.opacityHigh : Style.defaultDisabledOpacity

        background: Rectangle {
            visible: control.editable && !control.flat
            border.width: parent && parent.activeFocus ? 2 : 1
            border.color: parent && parent.activeFocus ?  control.Style.accentColor : control.Style.backgroundColor
        }
    }

    background: Rectangle {
        implicitWidth: 120
        implicitHeight: 40

        color: !control.editable && control.visualFocus ? (control.pressed ? Default.focusPressedColor : Default.focusLightColor) :
            (control.down || popup.visible ? Default.buttonPressedColor : control.Style.backgroundColor)
        border.color: Qt.lighter(color, 1.5)
        border.width: !control.editable && control.visualFocus ? 2 : 0
        visible: !control.flat || control.down
    }

    popup: T.Popup {
        y: control.height
        width: control.width
        height: Math.min(contentItem.implicitHeight, control.Window.height - topMargin - bottomMargin)
        topMargin: 6
        bottomMargin: 6

        font: control.font

        contentItem: ListView {
            clip: true
            implicitHeight: contentHeight
            model: control.popup.visible ? control.delegateModel : null
            currentIndex: control.highlightedIndex
            highlightRangeMode: ListView.ApplyRange
            highlightMoveDuration: 0

            Rectangle {
                z: 10
                width: parent.width
                height: parent.height
                color: "transparent"
                border.color: Qt.lighter(color, 1.5)
            }

            T.ScrollIndicator.vertical: ScrollIndicator { }
        }

        background: Rectangle { color: control.Style.backgroundColor}
    }
}