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path: root/resources/qml/emoji/EmojiPicker.qml
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import QtQuick 2.9
import QtQuick.Controls 2.9
import QtQuick.Layouts 1.3
import QtGraphicalEffects 1.9

import im.nheko 1.0
import im.nheko.EmojiModel 1.0

import "../"

Popup {

    function show(showAt, room_id, event_id) {
        console.debug("Showing emojiPicker for " + event_id + "in room " + room_id)
        parent = showAt
        x = Math.round((showAt.width - width) / 2)
        y = showAt.height
        emojiPopup.room_id = room_id
        emojiPopup.event_id = event_id
        open()
    }

    property string room_id
    property string event_id
    property var colors
    property alias model: gridView.model
    property var textArea
    property string emojiCategory: "people"
    property real highlightHue: colors.highlight.hslHue
    property real highlightSat: colors.highlight.hslSaturation
    property real highlightLight: colors.highlight.hslLightness

    id: emojiPopup

    margins: 0
    bottomPadding: 1
    leftPadding: 1
    rightPadding: 1

    modal: true
    focus: true
    closePolicy: Popup.CloseOnEscape | Popup.CloseOnPressOutside

    ColumnLayout {
        id: columnView
        anchors.fill: parent
        spacing: 0
        Layout.bottomMargin: 0
        Layout.leftMargin: 3
        Layout.rightMargin: 3
        Layout.topMargin: 2

        // emoji grid
        GridView {
            id: gridView

            Layout.preferredHeight: emojiPopup.height
            Layout.fillWidth: true
            Layout.fillHeight: true
            Layout.leftMargin: 4

            cellWidth: 52
            cellHeight: 52

            boundsBehavior: Flickable.StopAtBounds

            clip: true

            // Individual emoji
            delegate: AbstractButton {
                width: 48
                height: 48
                contentItem: Text {
                    horizontalAlignment: Text.AlignHCenter
                    verticalAlignment: Text.AlignVCenter
                    font.family: settings.emojiFont
                    
                    font.pixelSize: 36
                    text: model.unicode
                }

                background: Rectangle {
                    anchors.fill: parent
                    color: hovered ? colors.highlight : 'transparent'
                    radius: 5
                }

                hoverEnabled: true
                ToolTip.text: model.shortName
                ToolTip.visible: hovered

                // give the emoji a little oomf
                DropShadow {
                    width: parent.width;
                    height: parent.height;
                    horizontalOffset: 3
                    verticalOffset: 3
                    radius: 8.0
                    samples: 17
                    color: "#80000000"
                    source: parent.contentItem
                }
                // TODO: maybe add favorites at some point?
                onClicked: {
                    console.debug("Picked " + model.unicode + "in response to " + emojiPopup.event_id + " in room " + emojiPopup.room_id)
                    emojiPopup.close()
                    timelineManager.queueReactionMessage(emojiPopup.room_id, emojiPopup.event_id, model.unicode)
                }
            }

            // Search field
            header: TextField {
                id: emojiSearch
                anchors.left: parent.left
                anchors.right: parent.right
                anchors.rightMargin: emojiScroll.width + 4
                placeholderText: qsTr("Search")
                selectByMouse: true
                rightPadding: clearSearch.width

                Timer {
                    id: searchTimer
                    interval: 350 // tweak as needed?
                    onTriggered: {
                        emojiPopup.model.filter = emojiSearch.text
                        emojiPopup.model.category = Emoji.Category.Search
                    }
                }

                ToolButton {
                    id: clearSearch
                    anchors {
                        verticalCenter: parent.verticalCenter
                        right: parent.right
                    }
                    // clear the default hover effects.
                    background: Item {}
                    visible: emojiSearch.text !== ''
                    icon.source: "image://colorimage/:/icons/icons/ui/round-remove-button.png?" + (clearSearch.hovered ? colors.highlight : colors.buttonText)
                    focusPolicy: Qt.NoFocus
                    onClicked: emojiSearch.clear()
                }

                onTextChanged: searchTimer.restart()
                onVisibleChanged: if (visible) forceActiveFocus()
            }

			ScrollBar.vertical: ScrollBar {
				id: emojiScroll
			}
        }

        // Separator
        Rectangle {
            Layout.fillWidth: true
            Layout.preferredHeight: 1

            color: emojiPopup.colors.dark
        }

        // Category picker row
        RowLayout {
            Layout.bottomMargin: 0
            Layout.preferredHeight: 42
            implicitHeight: 42
            Layout.alignment: Qt.AlignHCenter | Qt.AlignBottom
            // Display the normal categories
            Repeater {
                model: ListModel {
                    // TODO: Would like to get 'simple' icons for the categories
                    ListElement { image: ":/icons/icons/emoji-categories/people.png"; category: Emoji.Category.People }
                    ListElement { image: ":/icons/icons/emoji-categories/nature.png"; category: Emoji.Category.Nature }
                    ListElement { image: ":/icons/icons/emoji-categories/foods.png"; category: Emoji.Category.Food }
                    ListElement { image: ":/icons/icons/emoji-categories/activity.png"; category: Emoji.Category.Activity }
                    ListElement { image: ":/icons/icons/emoji-categories/travel.png"; category: Emoji.Category.Travel }
                    ListElement { image: ":/icons/icons/emoji-categories/objects.png"; category: Emoji.Category.Objects }
                    ListElement { image: ":/icons/icons/emoji-categories/symbols.png"; category: Emoji.Category.Symbols }
                    ListElement { image: ":/icons/icons/emoji-categories/flags.png"; category: Emoji.Category.Flags }
                }

                delegate: AbstractButton {
                    Layout.preferredWidth: 36
                    Layout.preferredHeight: 36

                    contentItem: Image {
                        horizontalAlignment: Image.AlignHCenter
                        verticalAlignment: Image.AlignVCenter
                        fillMode: Image.Pad
                        sourceSize.width: 32
                        sourceSize.height: 32
                        source: "image://colorimage/" + model.image + "?" + (hovered ? colors.highlight : colors.buttonText)
                    }

                    MouseArea
                    {
                        id: mouseArea
                        anchors.fill: parent
                        onPressed:  mouse.accepted = false
                        cursorShape: Qt.PointingHandCursor
                    }

                    background: Rectangle {
                        anchors.fill: parent

                        color: emojiPopup.model.category === model.category ? Qt.hsla(highlightHue, highlightSat, highlightLight, 0.20)  : 'transparent'
                        radius: 5
                        border.color: emojiPopup.model.category === model.category ? colors.highlight : 'transparent'
                    }

                    hoverEnabled: true
					ToolTip.text: {
						switch (model.category) {
						case Emoji.Category.People:
							return qsTr('People');
						case Emoji.Category.Nature:
							return qsTr('Nature');
						case Emoji.Category.Food:
							return qsTr('Food');
						case Emoji.Category.Activity:
							return qsTr('Activity');
						case Emoji.Category.Travel:
							return qsTr('Travel');
						case Emoji.Category.Objects:
							return qsTr('Objects');
						case Emoji.Category.Symbols:
							return qsTr('Symbols');
						case Emoji.Category.Flags:
							return qsTr('Flags');
						}
					}
                    ToolTip.visible: hovered

                    onClicked: {
                        emojiPopup.model.category = model.category
                    }
                }
            }

            // Separator
            Rectangle {
                Layout.fillHeight: true
                Layout.preferredWidth: 1
                implicitWidth: 1
                height: parent.height

                color: emojiPopup.colors.dark
            }

            // Search Button is special
            AbstractButton {
                id: searchBtn
                hoverEnabled: true
                Layout.alignment: Qt.AlignRight
                Layout.bottomMargin: 0

                ToolTip.text: qsTr("Search")
                ToolTip.visible: hovered
                onClicked: {
                    // clear any filters
                    emojiPopup.model.category = Emoji.Category.Search
                    gridView.positionViewAtBeginning()
                    emojiSearch.forceActiveFocus()
                }
                Layout.preferredWidth: 36
                Layout.preferredHeight: 36
                implicitWidth: 36
                implicitHeight: 36

                contentItem: Image {
                    anchors.right: parent.right
                    horizontalAlignment: Image.AlignHCenter
                    verticalAlignment: Image.AlignVCenter
                    sourceSize.width: 32
                    sourceSize.height: 32
                    fillMode: Image.Pad
                    smooth: true
                    source: "image://colorimage/:/icons/icons/ui/search.png?" + (parent.hovered ? colors.highlight : colors.buttonText)
                }

                MouseArea
                {
                    id: mouseArea
                    anchors.fill: parent
                    onPressed:  mouse.accepted = false
                    cursorShape: Qt.PointingHandCursor
                }
            }
        }
    }
}