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** This file is part of Qt Creator.
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** GNU General Public License Usage
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** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
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import QtQuick 2.15
import QtQuick.Layouts 1.15
import QtQuickDesignerTheme 1.0
import HelperWidgets 2.0
import StudioControls 1.0 as StudioControls
import StudioTheme 1.0 as StudioTheme

Item {
    id: root

    readonly property int cellWidth: 100
    readonly property int cellHeight: 120

    property var currentMaterial: null
    property int currentMaterialIdx: 0

    // Called also from C++ to close context menu on focus out
    function closeContextMenu()
    {
        contextMenu.close()
    }

    // Called from C++ to refresh a preview material after it changes
    function refreshPreview(idx)
    {
        var item = gridRepeater.itemAt(idx);
        if (item)
            item.refreshPreview();
    }

    // Called from C++
    function clearSearchFilter()
    {
        searchBox.clear();
    }

    MouseArea {
        id: rootMouseArea

        anchors.fill: parent

        acceptedButtons: Qt.RightButton

        onClicked: {
            root.currentMaterial = null
            contextMenu.popup()
        }
    }

    Connections {
        target: materialBrowserModel

        function onSelectedIndexChanged() {
            // commit rename upon changing selection
            var item = gridRepeater.itemAt(currentMaterialIdx);
            if (item)
                item.commitRename();

            currentMaterialIdx = materialBrowserModel.selectedIndex;
        }
    }

    StudioControls.Menu {
        id: contextMenu

        closePolicy: StudioControls.Menu.CloseOnEscape | StudioControls.Menu.CloseOnPressOutside

        StudioControls.MenuItem {
            text: qsTr("Apply to selected (replace)")
            enabled: currentMaterial && materialBrowserModel.hasModelSelection
            onTriggered: materialBrowserModel.applyToSelected(currentMaterial.materialInternalId, false)
        }

        StudioControls.MenuItem {
            text: qsTr("Apply to selected (add)")
            enabled: currentMaterial && materialBrowserModel.hasModelSelection
            onTriggered: materialBrowserModel.applyToSelected(currentMaterial.materialInternalId, true)
        }

        StudioControls.MenuItem {
            text: qsTr("Duplicate")
            enabled: currentMaterial
            onTriggered: materialBrowserModel.duplicateMaterial(currentMaterialIdx)
        }

        StudioControls.MenuItem {
            text: qsTr("Rename")
            enabled: currentMaterial
            onTriggered: {
                var item = gridRepeater.itemAt(currentMaterialIdx);
                if (item)
                    item.startRename();
            }
        }

        StudioControls.MenuItem {
            text: qsTr("Delete")
            enabled: currentMaterial

            onTriggered: materialBrowserModel.deleteMaterial(currentMaterialIdx)
        }

        StudioControls.MenuSeparator {}

        StudioControls.MenuItem {
            text: qsTr("New Material")

            onTriggered: materialBrowserModel.addNewMaterial()
        }
    }

    Column {
        id: col
        y: 5
        spacing: 5

        Row {
            width: root.width

            SearchBox {
                id: searchBox

                width: root.width - addMaterialButton.width
            }

            IconButton {
                id: addMaterialButton

                tooltip: qsTr("Add a material.")

                icon: StudioTheme.Constants.plus
                anchors.verticalCenter: parent.verticalCenter
                buttonSize: searchBox.height
                onClicked: materialBrowserModel.addNewMaterial()
            }
        }

        Text {
            text: qsTr("No match found.");
            color: StudioTheme.Values.themeTextColor
            font.pixelSize: StudioTheme.Values.baseFontSize
            leftPadding: 10
            visible: materialBrowserModel.hasQuick3DImport && materialBrowserModel.isEmpty && !searchBox.isEmpty()
        }

        Text {
            text: qsTr("No materials yet.\nClick '+' above to start.")
            color: StudioTheme.Values.themeTextColor
            font.pixelSize: StudioTheme.Values.mediumFontSize
            horizontalAlignment: Text.AlignHCenter
            topPadding: 30
            anchors.horizontalCenter: parent.horizontalCenter
            visible: materialBrowserModel.hasQuick3DImport && materialBrowserModel.isEmpty && searchBox.isEmpty()
        }

        Text {
            text: qsTr("Add QtQuick3D module using the Components view to enable the Material Browser.");
            color: StudioTheme.Values.themeTextColor
            font.pixelSize: StudioTheme.Values.mediumFontSize
            topPadding: 30
            horizontalAlignment: Text.AlignHCenter
            wrapMode: Text.WordWrap
            width: root.width
            anchors.horizontalCenter: parent.horizontalCenter
            visible: !materialBrowserModel.hasQuick3DImport
        }

        ScrollView {
            id: scrollView

            width: root.width
            height: root.height - searchBox.height
            clip: true

            Grid {
                id: grid

                width: scrollView.width
                leftPadding: 5
                rightPadding: 5
                bottomPadding: 5
                columns: root.width / root.cellWidth

                Repeater {
                    id: gridRepeater

                    model: materialBrowserModel
                    delegate: MaterialItem {
                        width: root.cellWidth
                        height: root.cellHeight

                        onShowContextMenu: {
                            if (searchBox.isEmpty()) {
                                root.currentMaterial = model
                                contextMenu.popup()
                            }
                        }
                    }
                }
            }
        }
    }
}