/*
 *  SPDX-FileCopyrightText: 2019 Carl-Lucien Schwan <carl@carlschwan.eu>
 *
 *  SPDX-License-Identifier: LGPL-2.0-or-later
 */

import QtQuick
import QtQuick.Controls as QQC2
import QtQuick.Templates as T
import org.kde.kirigami as Kirigami

/**
 * This is advanced textfield. It is recommended to use this class when there
 * is a need to create a create a textfield with action buttons (e.g a clear
 * action).
 *
 * Example usage for a search field:
 * @code
 * import org.kde.kirigami as Kirigami
 *
 * Kirigami.ActionTextField {
 *     id: searchField
 *
 *     placeholderText: i18n("Search…")
 *
 *     focusSequence: StandardKey.Find
 *
 *     rightActions: Kirigami.Action {
 *         icon.name: "edit-clear"
 *         visible: searchField.text.length > 0
 *         onTriggered: {
 *             searchField.clear();
 *             searchField.accepted();
 *         }
 *     }
 *
 *     onAccepted: console.log("Search text is " + searchField.text);
 * }
 * @endcode
 *
 * @since 5.56
 * @inherit QtQuick.Controls.TextField
 */
QQC2.TextField {
    id: root

    /**
     * @brief This property holds a shortcut sequence that will focus the text field.
     * @since 5.56
     */
    property alias focusSequence: focusShortcut.sequence

    /**
     * @brief This property holds a list of actions that will be displayed on the left side of the text field.
     *
     * By default this list is empty.
     *
     * @since 5.56
     */
    property list<T.Action> leftActions

    /**
     * @brief This property holds a list of actions that will be displayed on the right side of the text field.
     *
     * By default this list is empty.
     *
     * @since 5.56
     */
    property list<T.Action> rightActions

    property alias _leftActionsRow: leftActionsRow
    property alias _rightActionsRow: rightActionsRow

    hoverEnabled: true

    // Manually setting this fixes alignment in RTL layouts
    horizontalAlignment: TextInput.AlignLeft

    leftPadding: Kirigami.Units.smallSpacing + (root.effectiveHorizontalAlignment === TextInput.AlignRight ? rightActionsRow : leftActionsRow).width
    rightPadding: Kirigami.Units.smallSpacing + (root.effectiveHorizontalAlignment === TextInput.AlignRight ? leftActionsRow : rightActionsRow).width

    Behavior on leftPadding {
        NumberAnimation {
            duration: Kirigami.Units.longDuration
            easing.type: Easing.InOutQuad
        }
    }

    Behavior on rightPadding {
        NumberAnimation {
            duration: Kirigami.Units.longDuration
            easing.type: Easing.InOutQuad
        }
    }

    Shortcut {
        id: focusShortcut
        enabled: root.visible && root.enabled
        onActivated: {
            root.forceActiveFocus(Qt.ShortcutFocusReason)
            root.selectAll()
        }
    }

    QQC2.ToolTip {
        visible: focusShortcut.nativeText.length > 0 && root.text.length === 0 && root.hovered
        text: focusShortcut.nativeText
    }

    component InlineActionIcon: Kirigami.Icon {
        id: iconDelegate

        required property T.Action modelData

        implicitWidth: Kirigami.Units.iconSizes.sizeForLabels
        implicitHeight: Kirigami.Units.iconSizes.sizeForLabels

        anchors.verticalCenter: parent.verticalCenter

        source: modelData.icon.name.length > 0 ? modelData.icon.name : modelData.icon.source
        visible: !(modelData instanceof Kirigami.Action) || modelData.visible
        active: actionArea.containsPress || actionArea.activeFocus
        enabled: modelData.enabled

        MouseArea {
            id: actionArea

            anchors.fill: parent
            activeFocusOnTab: true
            cursorShape: Qt.PointingHandCursor
            hoverEnabled: true

            Accessible.name: iconDelegate.modelData.text
            Accessible.role: Accessible.Button

            Keys.onPressed: event => {
                switch (event.key) {
                    case Qt.Key_Space:
                    case Qt.Key_Enter:
                    case Qt.Key_Return:
                    case Qt.Key_Select:
                        clicked(null);
                        event.accepted = true;
                        break;
                }
            }
            onClicked: mouse => iconDelegate.modelData.trigger()
        }

        QQC2.ToolTip {
            visible: (actionArea.containsMouse || actionArea.activeFocus) && (iconDelegate.modelData.text.length > 0)
            text: iconDelegate.modelData.text
        }
    }

    Row {
        id: leftActionsRow
        padding: Kirigami.Units.smallSpacing
        spacing: Kirigami.Units.smallSpacing
        layoutDirection: Qt.LeftToRight
        LayoutMirroring.enabled: root.effectiveHorizontalAlignment === TextInput.AlignRight
        anchors.left: parent.left
        anchors.leftMargin: Kirigami.Units.smallSpacing
        anchors.top: parent.top
        anchors.topMargin: parent.topPadding
        anchors.bottom: parent.bottom
        anchors.bottomMargin: parent.bottomPadding
        Repeater {
            model: root.leftActions
            InlineActionIcon { }
        }
    }

    Row {
        id: rightActionsRow
        padding: Kirigami.Units.smallSpacing
        spacing: Kirigami.Units.smallSpacing
        layoutDirection: Qt.RightToLeft
        LayoutMirroring.enabled: root.effectiveHorizontalAlignment === TextInput.AlignRight
        anchors.right: parent.right
        anchors.rightMargin: Kirigami.Units.smallSpacing
        anchors.top: parent.top
        anchors.topMargin: parent.topPadding
        anchors.bottom: parent.bottom
        anchors.bottomMargin: parent.bottomPadding
        Repeater {
            model: root.rightActions
            InlineActionIcon { }
        }
    }
}