/*
 *  SPDX-FileCopyrightText: 2015 Marco Martin <mart@kde.org>
 *
 *  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
import "templates/private" as TP

/**
 * A window that provides some basic features needed for all apps
 * Use this class only if you need a custom content for your application,
 * different from the Page Row behavior recommended by the HIG and provided
 * by ApplicationWindow.
 * It is recommended to use ApplicationWindow instead
 * @see ApplicationWindow
 *
 * It's usually used as a root QML component for the application.
 * It provides support for a central page stack, side drawers, and
 * basic support for the Android back button.
 *
 * Setting a width and height property on the ApplicationWindow
 * will set its initial size, but it won't set it as an automatically binding.
 * to resize programmatically the ApplicationWindow they need to
 * be assigned again in an imperative fashion
 *
 *
 * Example usage:
 * @code
 * import org.kde.kirigami as Kirigami
 *
 * Kirigami.ApplicationWindow {
 *  [...]
 *     globalDrawer: Kirigami.GlobalDrawer {
 *         actions: [
 *            Kirigami.Action {
 *                text: "View"
 *                icon.name: "view-list-icons"
 *                Kirigami.Action {
 *                        text: "action 1"
 *                }
 *                Kirigami.Action {
 *                        text: "action 2"
 *                }
 *                Kirigami.Action {
 *                        text: "action 3"
 *                }
 *            },
 *            Kirigami.Action {
 *                text: "Sync"
 *                icon.name: "folder-sync"
 *            }
 *         ]
 *     }
 *
 *     contextDrawer: Kirigami.ContextDrawer {
 *         id: contextDrawer
 *     }
 *
 *     pageStack: PageStack {
 *         ...
 *     }
 *  [...]
 * }
 * @endcode
 *
 * @inherit QtQuick.Controls.ApplicationWindow
 */
QQC2.ApplicationWindow {
    id: root

//BEGIN properties
    /**
     * @brief This property holds the stack used to allocate the pages and to manage the
     * transitions between them.
     *
     * Put a container here, such as QtQuick.Controls.StackView.
     */
    property Item pageStack

    /**
     * @brief This property sets whether the standard chrome of the app is visible.
     *
     * These are the action button, the drawer handles, and the application header.
     *
     * default: ``true``
     */
    property bool controlsVisible: true

    /**
     * @brief This property holds the drawer for global actions.
     *
     * This drawer can be opened by sliding from the left screen edge
     * or by dragging the ActionButton to the right.
     *
     * @note It is recommended to use the GlobalDrawer here.
     * @property org::kde::kirigami::OverlayDrawer globalDrawer
     */
    property OverlayDrawer globalDrawer

    /**
     * @brief This property tells whether the application is in "widescreen" mode.
     *
     * This is enabled on desktops or horizontal tablets.
     *
     * @note Different styles can have their own logic for deciding this.
     */
    property bool wideScreen: width >= Kirigami.Units.gridUnit * 60

    /**
     * @brief This property holds the drawer for context-dependent actions.
     *
     * The drawer that will be opened by sliding from the right screen edge
     * or by dragging the ActionButton to the left.
     *
     * @note It is recommended to use the ContextDrawer type here.
     *
     * The contents of the context drawer should depend from what page is
     * loaded in the main pageStack
     *
     * Example usage:
     *
     * @code
     * import org.kde.kirigami as Kirigami
     *
     * Kirigami.ApplicationWindow {
     *     contextDrawer: Kirigami.ContextDrawer {
     *         enabled: true
     *         actions: [
     *             Kirigami.Action {
     *                 icon.name: "edit"
     *                 text: "Action text"
     *                 onTriggered: {
     *                     // do stuff
     *                 }
     *             },
     *             Kirigami.Action {
     *                 icon.name: "edit"
     *                 text: "Action text"
     *                 onTriggered: {
     *                     // do stuff
     *                 }
     *             }
     *         ]
     *     }
     * }
     * @endcode
     *
     * @property org::kde::kirigami::ContextDrawer contextDrawer
     */
    property OverlayDrawer contextDrawer

    /**
     * Effectively the same as T.Overlay.overlay
     */
    readonly property Item overlay: T.Overlay.overlay

    /**
     * This property holds a standard action that will quit the application when triggered.
     * Its properties have the following values:
     *
     * @code
     * Action {
     *     text: "Quit"
     *     icon.name: "application-exit-symbolic"
     *     shortcut: StandardKey.Quit
     *     // ...
     * }
     * @endcode
     * @since 5.76
     */
    readonly property Kirigami.Action quitAction: Kirigami.Action {
        text: qsTr("Quit")
        icon.name: "application-exit";
        shortcut: StandardKey.Quit
        onTriggered: source => root.close();
    }
//END properties

//BEGIN functions
    /**
     * @brief This function shows a little passive notification at the bottom of the app window
     * lasting for few seconds, with an optional action button.
     *
     * @param message The text message to be shown to the user.
     * @param timeout How long to show the message:
     *            possible values: "short", "long" or the number of milliseconds
     * @param actionText Text in the action button, if any.
     * @param callBack A JavaScript function that will be executed when the
     *            user clicks the button.
     */
    function showPassiveNotification(message, timeout, actionText, callBack) {
        notificationsObject.showNotification(message, timeout, actionText, callBack);
    }

   /**
    * @brief This function hides the passive notification at specified index, if any is shown.
    * @param index Index of the notification to hide. Default is 0 (oldest notification).
    */
    function hidePassiveNotification(index = 0) {
        notificationsObject.hideNotification(index);
    }

    /**
     * @brief This function returns application window's object anywhere in the application.
     * @returns a pointer to this application window
     * can be used anywhere in the application.
     */
    function applicationWindow() {
        return root;
    }
//END functions

    LayoutMirroring.enabled: Qt.application.layoutDirection === Qt.RightToLeft
    LayoutMirroring.childrenInherit: true

    color: Kirigami.Theme.backgroundColor

    TP.PassiveNotificationsManager {
        id: notificationsObject
        anchors.bottom: parent.bottom
        anchors.horizontalCenter: parent.horizontalCenter
        z: 1
    }

    contentItem.z: 1
    contentItem.anchors.left: contentItem.parent.left
    contentItem.anchors.right: contentItem.parent.right
    contentItem.anchors.topMargin: root.wideScreen && header && controlsVisible ? header.height : 0
    contentItem.anchors.leftMargin: root.globalDrawer && root.globalDrawer.modal === false && (!root.pageStack || root.pageStack.leftSidebar !== root.globalDrawer) ? root.globalDrawer.width * root.globalDrawer.position : 0
    contentItem.anchors.rightMargin: root.contextDrawer && root.contextDrawer.modal === false ? root.contextDrawer.width * root.contextDrawer.position : 0

    Binding {
        target: root.menuBar
        property: "x"
        value: -contentItem.x
    }
    Binding {
        target: root.header
        property: "x"
        value: -contentItem.x
    }
    Binding {
        target: root.footer
        property: "x"
        value: -contentItem.x
    }

    // Don't use root.overlay property here. For one, we know that in a window
    // it will always be the same as T.Overlay.overlay; secondly Drawers
    // don't care about being contained/parented to anything else anyway.
    onGlobalDrawerChanged: {
        if (globalDrawer) {
            globalDrawer.parent = Qt.binding(() => T.Overlay.overlay);
        }
    }
    onContextDrawerChanged: {
        if (contextDrawer) {
            contextDrawer.parent = Qt.binding(() => T.Overlay.overlay);
        }
    }
    onPageStackChanged: {
        if (pageStack) {
            // contentItem is declared as CONSTANT, so binding isn't needed.
            pageStack.parent = contentItem;
        }
    }

    width: Kirigami.Settings.isMobile ? Kirigami.Units.gridUnit * 30 : Kirigami.Units.gridUnit * 55
    height: Kirigami.Settings.isMobile ? Kirigami.Units.gridUnit * 45 : Kirigami.Units.gridUnit * 40
    visible: true

    Component.onCompleted: {
        // Explicitly break the binding as we need this to be set only at startup.
        // if the bindings are active, after this the window is resized by the
        // compositor and then the bindings are reevaluated, then the window
        // size would reset ignoring what the compositor asked.
        // see BUG 433849
        root.width = root.width;
        root.height = root.height;
    }

    // This is needed because discover in mobile mode does not
    // close with the global drawer open.
    Shortcut {
        sequence: root.quitAction.shortcut
        enabled: root.quitAction.enabled
        context: Qt.ApplicationShortcut
        onActivated: root.close();
    }
}