/*
    SPDX-FileCopyrightText: 2016 Marco Martin <mart@kde.org>

    SPDX-License-Identifier: LGPL-2.0-or-later
*/
pragma ComponentBehavior: Bound

import QtQuick
import QtQuick.Controls
import QtQuick.Templates as T
import org.kde.ksvg as KSvg
//NOTE: importing PlasmaCore is necessary in order to make KSvg load the current Plasma Theme
import org.kde.plasma.core as PlasmaCore
import "private" as Private
import org.kde.kirigami as Kirigami
import "mobiletextselection" as MobileTextSelection

/*!
     \qmltype TextArea
     \inqmlmodule org.kde.plasma.components
     \brief A simple text area whose visual styling is determined by the active Plasma theme.
 */
T.TextArea {
    id: control

    implicitWidth: Math.max(contentWidth + leftPadding + rightPadding,
                            background ? background.implicitWidth : 0,
                            placeholder.implicitWidth + leftPadding + rightPadding)
    implicitHeight: Math.max(contentHeight + topPadding + bottomPadding,
                             background ? background.implicitHeight : 0,
                             placeholder.implicitHeight + topPadding + bottomPadding)

    padding: 6

    Kirigami.Theme.colorSet: Kirigami.Theme.View
    Kirigami.Theme.inherit: false
    color: Kirigami.Theme.textColor
    selectionColor: Kirigami.Theme.highlightColor
    selectedTextColor: Kirigami.Theme.highlightedTextColor
    opacity: control.enabled ? 1 : 0.6
    verticalAlignment: TextEdit.AlignTop
    hoverEnabled: !Kirigami.Settings.tabletMode || !Kirigami.Settings.hasTransientTouchInput

    selectByMouse: hoverEnabled

    cursorDelegate: !hoverEnabled ? mobileCursor : null
    Component {
        id: mobileCursor
        MobileTextSelection.MobileCursor {
            target: control
        }
    }

    onTextChanged: MobileTextSelection.MobileTextActionsToolBar.shouldBeVisible = false;
    onPressed: event => MobileTextSelection.MobileTextActionsToolBar.shouldBeVisible = true;

    onPressAndHold: event => {
        if (hoverEnabled) {
            return;
        }
        forceActiveFocus();
        cursorPosition = positionAt(event.x, event.y);
        selectWord();
    }

    MobileTextSelection.MobileCursor {
        target: control
        selectionStartHandle: true
        property var rect: control.positionToRectangle(control.selectionStart)
        x: rect.x
        y: rect.y
    }

    onFocusChanged: {
        if (focus) {
            MobileTextSelection.MobileTextActionsToolBar.controlRoot = control;
        }
    }

    Label {
        id: placeholder
        x: control.leftPadding
        y: control.topPadding
        width: control.width - (control.leftPadding + control.rightPadding)
        height: control.height - (control.topPadding + control.bottomPadding)

        text: control.placeholderText
        font: control.font
        color: enabled ? Kirigami.Theme.textColor : Kirigami.Theme.disabledTextColor
        enabled: false
        horizontalAlignment: control.horizontalAlignment
        verticalAlignment: control.verticalAlignment
        visible: !control.length && !control.preeditText && (!control.activeFocus || control.horizontalAlignment !== Qt.AlignHCenter)
        elide: Text.ElideRight
    }

    background: Item {
        Private.TextFieldFocus {
            state: control.activeFocus ? "focus" : (control.enabled && control.hovered ? "hover" : "hidden")
            anchors.fill: parent
        }
        KSvg.FrameSvgItem {
            id: base
            anchors.fill: parent
            imagePath: "widgets/lineedit"
            prefix: "base"
        }
    }
}