// Copyright © SixtyFPS GmbH <info@slint.dev>
// SPDX-License-Identifier: GPL-3.0-only OR LicenseRef-Slint-Royalty-free-2.0 OR LicenseRef-Slint-Software-3.0

//! This file contains a generic implementation of the MenuBar and ContextMenu

import { Palette } from "std-widgets-impl.slint";

export component PopupMenuImpl inherits Window {
    property <length> px: 1rem / 14;
    in property <[MenuEntry]> entries: [];
    callback sub-menu(MenuEntry) -> [MenuEntry];
    callback activated(MenuEntry);

    Rectangle {
        border-radius: 7*px;
        border-color: Palette.border;
        background: Palette.background;
        drop-shadow-blur: 2px;
        drop-shadow-color: Palette.foreground.transparentize(0.5);
        min-width: 10rem;
        VerticalLayout {
            padding: 5px;
            for entry in entries: Rectangle {
                background: ita.has-hover || ita.pressed ? Palette.alternate-background : transparent;
                border-radius: 3*px;
                border-width: 1px;
                HorizontalLayout {
                    spacing: 7*px;
                    padding: 11*px;
                    padding-top: 4*px;
                    padding-bottom: 6*px;
                    Text {
                        text: entry.title;
                        horizontal-stretch: 1;
                    }
                    if entry.has-sub-menu : Text {
                        text: "▶";
                        horizontal-stretch: 0;
                    }
                }
                ita := TouchArea {
                    clicked => {
                        if entry.has-sub-menu {
                            subMenu.show(sub-menu(entry), {
                                x: root.width,
                                y: self.absolute-position.y - subMenu.absolute-position.y,
                            });
                        } else {
                            activated(entry);
                        }
                    }
                }
            }
        }
    }

    subMenu := ContextMenu {
        x: 0; y: 0; width: 0; height: 0;
        sub-menu(entry) => { root.sub-menu(entry); }
        activated(entry) => { root.activated(entry); }
    }
}

export component MenuBarImpl {
    callback activated(MenuEntry);
    callback sub-menu(MenuEntry) -> [MenuEntry];

    property <[MenuEntry]> entries;

    property <length> px: 1rem / 14;

    preferred-width: 100%;
    height: l.preferred-height;
    l := HorizontalLayout {
        padding: 5*px;
        alignment: start;
        spacing: 1*px;
        for entry in entries: e := Rectangle {
            background: ta.has-hover || ta.pressed ? Palette.alternate-background : transparent;
            border-radius: 3*px;
            HorizontalLayout {
                padding: 11*px;
                padding-top: 4*px;
                padding-bottom: 6*px;
                Text {
                    text: entry.title;
                }
            }
            ta := TouchArea {
                clicked => {
                    cm.show(sub-menu(entry), { x: e.x, y: root.height });
                }
            }
        }

        // For the default size when there is no entries
        Rectangle {
            HorizontalLayout {
                padding-top: 0.4rem;
                padding-bottom: 0.6rem;
                Text { text: ""; }
            }
        }
    }


    cm := ContextMenu {
        activated(entry) => { root.activated(entry); }
        sub-menu(entry) => { root.sub-menu(entry); }
    }
}